CN107532681A

CN107532681A - Transmission belt

Info

Publication number: CN107532681A
Application number: CN201680023463.7A
Authority: CN
Inventors: 小林正吾; 中山铁平; 土屋大树; 奥野茂树; 橘博之
Original assignee: Bando Chemical Industries Ltd
Current assignee: Bando Chemical Industries Ltd
Priority date: 2015-04-24
Filing date: 2016-04-21
Publication date: 2018-01-02
Anticipated expiration: 2036-04-21
Also published as: CN107532681B; WO2016170795A1

Abstract

The present invention provides transmission belt that is a kind of while meeting required multiple characteristics.Transmission belt (B) is so as to the transmission belt of passing power on belt wheel.The transmission belt has the layer by being formed containing cellulose family superfine fibre and average diameter for the rubber composition of more than 1 μm of chopped fiber (16).

Description

Transmission belt

Technical field

The present invention relates to transmission belt.

Background technology

Coordinate chopped fiber in the rubber composition of rubber layer of transmission belt is formed.For example, Patent Document 1 discloses The compression layer of polywedge bet is at least set to be made up of the rubber composition containing carbon black and chopped fiber.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2014-167347 publications

For transmission belt, exist to various characteristics such as wear resistance, coefficient of friction, suppression adhesive wears and require.Forming Coordinate carbon black and chopped fiber in the rubber composition of band come in the case of strengthening, if met by adjusting use level some Characteristic, then the tendency for making other deterioration in characteristics be present.

The content of the invention

Therefore, problem of the invention is to provide the transmission belt that can meet required multifrequency nature simultaneously.

The present invention be on belt wheel so as to passing power transmission belt, have by containing cellulose family superfine fibre with And the layer that the rubber composition for the chopped fiber that average diameter is more than 1 μm is formed.

According to the present invention, due to by the rubber composition structure containing cellulose family superfine fibre and other chopped fibers Into layer, therefore, it is possible to make transmission belt while meet required multifrequency nature.

Brief description of the drawings

Fig. 1 is the stereogram for the polywedge bet for schematically showing the example of embodiment 1 and 2.

Fig. 2 is the sectional view of the major part of the polywedge bet of embodiment 1 and 2.

Fig. 3 is the first explanation figure of the manufacture method for the polywedge bet for representing embodiment 1 and 2.

Fig. 4 is the second explanation figure of the manufacture method for the polywedge bet for representing embodiment 1 and 2.

Fig. 5 is the 3rd explanation figure of the manufacture method for the polywedge bet for representing embodiment 1 and 2.

Fig. 6 is the 4th explanation figure of the manufacture method for the polywedge bet for representing embodiment 1 and 2.

Fig. 7 is the 5th explanation figure of the manufacture method for the polywedge bet for representing embodiment 1 and 2.

Fig. 8 is the 6th explanation figure of the manufacture method for the polywedge bet for representing embodiment 1 and 2.

Fig. 9 is the belt wheel design drawing for representing the grinding test bench for measuring the cracking resistance life-span.

Figure 10 is to represent belt wheel design drawing of the high-tension with grinding test bench.

Figure 11 is the figure for illustrating friction coefficient measurement method.

Figure 12 is the belt wheel design drawing for representing the automobile ancillary driving belt driver using the polywedge bet of embodiment.

Figure 13 is the stereogram for the flat rubber belting for schematically showing the example of embodiment 3.

Figure 14 is the first explanation figure of the manufacture method for the flat rubber belting for representing embodiment 3.

Figure 15 is the second explanation figure of the manufacture method for the flat rubber belting for representing embodiment 3.

Figure 16 is the 3rd explanation figure of the manufacture method for the flat rubber belting for representing embodiment 3.

Figure 17 is the figure for representing friction coefficient measuring apparatus structure.

Figure 18 is to represent the belt wheel design drawing with grinding test bench for assessing wear resistance.

Figure 19 is to represent the belt wheel design drawing with grinding test bench for assessing bending fatigue resistance.

Figure 20 is to represent the belt wheel design drawing with grinding test bench for assessment friction, wearing character.

Figure 21 is to represent the belt wheel design drawing with grinding test bench for assessing wear resistance.

Figure 22 is the stereogram for the cog belt for schematically showing the example of embodiment 4.

Figure 23 is the partial sectional view with mould for manufacturing the cog belt of embodiment 4.

Figure 24 is the first explanation figure of the manufacture method of the cog belt of embodiment 4.

Figure 25 is the second explanation figure of the manufacture method of the cog belt of embodiment 4.

Figure 26 is the 3rd explanation figure of the manufacture method of the cog belt of embodiment 4.

Figure 27 is the first explanation figure of the manufacture method of the cog belt of embodiment 5.

Figure 28 is the second explanation figure of the manufacture method of the cog belt of embodiment 5.

Figure 29 is the 3rd explanation figure of the manufacture method of the cog belt of embodiment 5.

Figure 30 is to represent that the sectional view of cloth and the Interface Construction of cog belt main body is strengthened in the teeth portion side in embodiment 7.

Figure 31 is to represent that the sectional view of cloth and the Interface Construction of cog belt main body is strengthened in the teeth portion side in embodiment 8.

Figure 32 is represented for assessing the teeth portion fracture resistance of cog belt and the band with grinding test bench of wear resistance Take turns design drawing.

Symbol description

10 polywedge bet main bodys

11 compression rubber layers

12 adhesive rubber layers

13 back side rubber layers

16 chopped fibers

120 flat rubber belting main bodys

121 inner rubber layers

122 adhesive rubber layers

123 outer rubber layers

126 chopped fibers

310 cog belt main bodys

311a base portions

311b teeth portion

312 cored wires

Strengthen cloth in 313 teeth portion sides

314 RFL adhesive layers

315 rubber paste adhesive layers

Embodiment

Below, referring to the drawings, embodiments of the present invention are illustrated.

[embodiment 1]

(polywedge bet B)

Fig. 1 and 2 represents the polywedge bet B involved by embodiment 1.Polywedge bet B involved by embodiment 1 is, for example, to use In the annular power transmission member of the subsidiary engine driving belt driver being arranged in the engine room of automobile etc..For embodiment Polywedge bet B involved by 1, for example, with a length of 700~3000mm, with a width of 10~36mm, tape thickness is 4.0~5.0mm.

Polywedge bet B involved by embodiment 1 possesses the polywedge bet main body 10 of rubber system, and the polywedge bet main body 10 is configured to Following three-layer structures：Form the compression rubber layer 11 of the pulley contact part with inner circumferential side, middle adhesive rubber layer 12 and Back side rubber layer 13 with outer circumferential side.Pars intermedia on the thickness direction of the adhesive rubber layer 12 of polywedge bet main body 10, with The mode that the spiral with pitch is formed on bandwidth direction is embedded with cored wire 14.In addition it is also possible to substitute back side rubber layer 13 and Set the back side to strengthen cloth, polywedge bet main body 10 is configured to the bilayer of compression rubber layer 11 and adhesive rubber layer 12.

Compression rubber layer 11 is arranged to multiple V-arrangement ribs 16 and hung down along the inner circumferential side of band.Multiple V-arrangement ribs 16 are respectively formed as edge Section with length direction extension is in the ridge of substantially del, and is arranged to arrange along bandwidth direction.For each V-arrangement rib 16, for example, a height of 2.0~3.0mm of rib, the width between cardinal extremity is 1.0~3.6mm.The quantity of V-arrangement rib 16 is, for example, 3~6 (being 6 in Fig. 1).Adhesive rubber layer 12 is configured to the banding that section is in transverse rectangular, and its thickness is, for example, 1.0~2.5mm.The back of the body Face rubber layer 13 is also configured to the banding that section is in transverse rectangular, and thickness is, for example, 0.4~0.8mm.From when suppressing back side driving From the aspect of producing sound, overleaf the surface of rubber layer 13 is preferably provided with painting woven pattern.

Compression rubber layer 11, adhesive rubber layer 12 and back side rubber layer 13 are formed by rubber composition, the building rubber compound Thing is pressurizeed simultaneously by the uncrosslinked rubber composition heating to coordinating various rubber chemicals in rubber constituent and being kneaded It is made using cross-linking agents.Form the building rubber compound of compression rubber layer 11, adhesive rubber layer 12 and back side rubber layer 13 Thing can be with identical, can also be different.

Rubber as the rubber composition for forming compression rubber layer 11, adhesive rubber layer 12 and back side rubber layer 13 Glue composition, for example, can enumerate ethylene-propylene copolymer (EPR), ethylene-propylene-diene terpolymer (EPDM), ethene- The ethene-alpha-olefin such as octene copolymer, ethylene-butene copolymer elastomer, neoprene (CR), CSM (CSM), hydrogenated acrylonitrile nitrile rubber (H-HBR) etc..The one or more kinds of mixed rubbers of rubber constituent preferably wherein.It is excellent It is selected to be formed the rubber constituent phase of the rubber composition of compression rubber layer 11, adhesive rubber layer 12 and back side rubber layer 13 Together.

Form at least one of rubber composition of compression rubber layer 11, adhesive rubber layer 12 and back side rubber layer 13 Distribution containing fibre diameter includes 50~500nm cellulose family superfine fibre.It is preferably used to form compression rubber layer 11st, adhesive rubber layer 12 and all rubber compositions of back side rubber layer 13 all contain cellulose family superfine fibre, still, more The rubber composition for being preferably at least used to be formed the compression rubber layer 11 for forming pulley contact part contains the ultra-fine fibre of cellulose family Dimension.

Cellulose family superfine fibre is derived from the fibrous material of cellulose superfine fibre, and the cellulose superfine fibre is by inciting somebody to action The framework ingredient of the fine plant cell wall for disassembling to obtain of string is formed.Raw material as cellulose family superfine fibre is planted Thing, for example, timber, bamboo, rice (straw), potato, sugarcane (bagasse), pasture and water, marine alga etc. can be enumerated.Wherein preferred wood Material.This cellulose family superfine fibre is included by making to form surface rubber layer 11a expanded rubber composition, it was found that higher Enhancing effect.

Cellulose family superfine fibre can be the hydrophobization after cellulose superfine fibre itself or silicic acid anhydride Cellulose superfine fibre.In addition, as cellulose family superfine fibre, cellulose superfine fibre and hydrophobization can also be used simultaneously Cellulose superfine fibre.From the aspect of dispersiveness, cellulose family superfine fibre preferably comprises hydrophobic cellulose superfine fibre. As hydrophobic cellulose superfine fibre, it can enumerate and some or all of the hydroxyl of cellulose are replaced into hydrophobic grouping Cellulose superfine fibre and using surface conditioning agent carry out hydrophobizing surface processing cellulose superfine fibre.

As for obtain by the hydroxyl of cellulose it is some or all be replaced into hydrophobic grouping cellulose it is ultra-fine The hydrophobization of fiber, for example, can enumerate esterification (acylation) (esterified with alkyl, it is compound esterification, beta-keto acid esterification etc.), alkylation, Tosylation, epoxidation, arylation etc..Wherein, preferably it is esterified.Specifically, the hydrophobic cellulose superfine fibre of esterification Can be by some or all by carboxylic acids such as acetic acid, anhydrous acetic acid, propionic acid, butyric acid or its halogen of the hydroxyl of cellulose The cellulose superfine fibre that compound (particularly chloride) is acylated.As hydrophobic for obtaining carrying out using surface conditioning agent Change the surface conditioning agent of the cellulose superfine fibre of surface treatment, for example, silane coupler etc. can be enumerated.

For cellulose family superfine fibre, from the aspect of the characteristic for realizing band, the distribution lower limit of its fibre diameter is preferred Below 10nm, more preferably below 3nm.The upper limit preferred more than 500nm, more preferably more than 700nm, further preferred more than 1 μm.It is fine The distribution for tieing up the fibre diameter of plain class superfine fibre preferably comprises 20~500nm, more preferably comprising 20~700mm, enters one Step preferably comprises 20nm~1 μm.

Preferred more than the 3nm of avarage fiber diameter and below 200nm, more preferably more than 3nm of cellulose family superfine fibre and Below 100nm.

By after the sample Freezing smashing for forming the rubber composition with main body, seen using transmission electron microscope (TEM) Its section is examined, and arbitrarily selects 50 cellulose family superfine fibre measurement fibre diameters, fiber is obtained based on the measurement result The distribution of fiber diameters of plain class superfine fibre.In addition, the fiber for obtaining optional 50 cellulose family superfine fibres is straight Avarage fiber diameter of the average in footpath as cellulose family superfine fibre.

Cellulose family superfine fibre can be the ultra-fine fibre of cellulose family of the high aspect ratio manufactured by machinery solution method for fiber Dimension or the cellulose family superfine fibre manufactured by chemistry solution method for fiber.Wherein, method for fiber system is preferably solved by chemistry Make.In addition, as cellulose family superfine fibre, can also use simultaneously by machinery solution method for fiber and chemistry solution method for fiber system The cellulose family superfine fibre made.As the fiber decomposition device for machinery solution method for fiber, for example, twin shaft kneading machine etc. can be enumerated Kneading machine, high pressure homogenizer, grinder, sand mill etc..As the processing for chemistry solution method for fiber, for example, acid can be enumerated Hydrolysis process etc..

For forming the fibre in compression rubber layer 11, adhesive rubber layer 12 and/or the rubber composition of back side rubber layer 13 The content of plain class superfine fibre is tieed up, from the aspect of it can meet the various characteristics of transmission belt respectively, relative to 100 mass parts Rubber constituent, preferably more than 1 mass parts, more preferably more than 5 mass parts, more than further preferred 10 mass parts, additionally, it is preferred that 30 Below mass parts, more preferably below 25 mass parts, below further preferred 20 mass parts.

In addition, as rubber chemicals, can enumerate reinforcement material, oil, processing aid, vulcanization accelerator additive, crosslinking agent, Assistant crosslinking agent, vulcanization accelerator etc..

As reinforcement material, in chopped fiber used in addition to cellulose family superfine fibre, for example, 6- can be enumerated Nylon fiber, 6,6- nylon fibers, 4,6- nylon fibers, polyester fiber (PET), PEN (PEN) fiber, Class aromatic polyamide fibre, meta class aromatic polyamide fibre, polyester fiber etc. are aligned, can also may be used only comprising one kind With comprising a variety of.For example, the long fibre for implementing the adhesion process for being impregnated in the rear heating such as the RFL aqueous solution can be cut to rule Measured length manufactures chopped fiber.

Preferably more than 1 μm of the diameter of chopped fiber, more preferably more than 5 μm, further preferred more than 10 μm, additionally, it is preferred that 100 Below μm, more preferably less than 70 μm, further preferred less than 50 μm.

In addition, for the use level of chopped fiber, relative to the rubber constituent of the rubber composition of 100 mass parts, preferably 5 matter Measure more than part, more preferably more than 10 mass parts, additionally, it is preferred that below 50 mass parts, more preferably below 40 mass parts.

As reinforcement material, can for example be enumerated in carbon black channel black, SAF, ISAF, N-339, HAF, N-351, The thermal black such as the furnace blacks such as MAF, FEF, SRF, GPF, ECF, N-234, FT, MT, acetylene carbon black etc..

In the case of using cellulose family superfine fibre, it is not essential however to carbon black is added, still, in order to which antistatic etc. can To add carbon black.In the case where adding carbon black, relative to the rubber constituent of the rubber composition of 100 mass parts, carbon black is matched somebody with somebody Resultant is preferably more than 1 mass parts, more preferably more than 5 mass parts, additionally, it is preferred that below 100 mass parts, more preferably 50 mass parts with Under.

As oil, for example, the mineral oilses such as petroleum-type softening agent, paraffin oil oil, castor oil, cottonseed oil, Asia can be enumerated The vegetable oil such as flaxseed oil, rapeseed oil, soybean oil, palm oil, coconut oil, peanut oil, tree are cured, retinal, pine tar.Oil is preferably wherein It is one or two kinds of more than.Relative to the rubber constituent of the rubber composition of 100 mass parts, oily content for example can be 5 ~15 mass parts.

As vulcanization accelerator additive, for example, the metal oxides such as zinc oxide (zinc white), magnesia, metal carbon can be enumerated Hydrochlorate, aliphatic acid and its derivative etc..It is more than vulcanization accelerator additive preferably wherein one or two kinds of.Relative to 100 mass The rubber constituent of the rubber composition of part, the content of vulcanization accelerator additive for example can be 5~15 mass parts.

As crosslinking agent, sulphur and organic peroxide can be enumerated.As crosslinking agent, sulphur can be coordinated, can also be matched somebody with somebody Organic peroxide is closed, can also both uses simultaneously.For the use level of crosslinking agent, in the case of sulphur, relative to 100 The rubber constituent of the rubber composition of mass parts, such as can be 0.5~4.0 mass parts, in the case of organic peroxide, Relative to the rubber constituent of the rubber composition of 100 mass parts, such as can be 0.5~8.0 mass parts.

As organic peroxide, for example, the dialkyl peroxide such as cumyl peroxide class, peroxidating can be enumerated Ketone peroxide classes such as the peroxyesters such as tert-butyl acetate, two Cyclohexanone peroxides etc..Organic peroxide can coordinate One kind, it can also coordinate a variety of.

As assistant crosslinking agent, for example, can enumerate maleimide, TAIC, 1,2- polybutadiene, oximes, guanidine and Trimethylol-propane trimethacrylate etc..It is more than assistant crosslinking agent preferably wherein one or two kinds of.Relative to 100 mass The rubber constituent of part, assistant crosslinking agent content for example can be 0.5~15 mass parts.

Adhesive rubber layer 12 and back side rubber layer 13 are formed by solid rubber composition, the solid building rubber compound Thing is pressurizeed simultaneously by the uncrosslinked rubber composition heating to coordinating various rubber chemicals in rubber constituent and being kneaded It is made using cross-linking agents.Rubber as the rubber composition for forming adhesive rubber layer 12 and back side rubber layer 13 Glue composition, the rubber constituent same with compression rubber layer 11 or identical rubber constituent can be enumerated.As rubber compounding Agent, can be same with compression rubber layer 11, enumerates reinforcement material, oil, processing aid, vulcanization accelerator additive, crosslinking agent, helps crosslinking Agent, vulcanization accelerator etc..In addition, can be with pressure for the rubber composition for forming adhesive rubber layer 12 and back side rubber layer 13 Contracting rubber layer 11 equally includes cellulose family superfine fibre and chopped fiber.

By polyethylene terephthalate (PET) fiber, PEN (PEN) fiber, contraposition class virtue The wire rods such as fragrant polyamide fiber, vinylon fiber etc. are twisted thread, sennit form cored wire 14.For cored wire 14, in order to realize to more Cohesive of the wedge with main body 10, implement to be impregnated in the adhesion process heated after the RFL aqueous solution before the forming and/or be impregnated in rubber The adhesion process dried after paste.In addition, for cored wire 14, before adhesion process is carried out using the RFL aqueous solution and/or rubber paste, Can be as needed, heated after being impregnated in the binder solution being made up of solution such as epoxy resin, polyisocyanate resins Adhesion process.The diameter of cored wire 14 for example can be 0.5~2.5mm, between the center of cored wire 14 adjacent to each other in section Size for example can be 0.05~0.20mm.

(polywedge bet B manufacture method)

Based on Fig. 3~Fig. 8, the manufacture method of the polywedge bet B involved by embodiment 1 is illustrated.

Fig. 3 and Fig. 4 represents the band mould 30 for manufacturing the polywedge bet B involved by embodiment 1.

This possesses the cylindrical internal model 31 of difference and external mold 32 that are arranged to same heart shaped with mould 30.

Internal model 31 is formed by flexible materials such as rubber.External mold 32 is formed by rigid materials such as metals.The inner circumferential of external mold 32 Face is configured to forming surface, and in the inner peripheral surface of the external mold 32, fixed pitch is provided with the shape identical with V-arrangement rib 16 vertically V-arrangement ribbed grooving 33.The tempering machine for making the circulation of the cold mediums such as the thermal mediums such as water vapour, water carry out temperature adjustment is provided with external mold 32 Structure.In addition, it is provided with the pressure-producing part for making internal model 31 be expanded from internal pressurization.

The manufacture method of polywedge bet B involved by embodiment 1 has material preparatory process, molding procedure, cross-linking process step And final manufacturing procedure.

- be used for compression rubber layer, adhesive rubber layer and back side rubber layer uncrosslinked sheet rubber 11 ', 12 ', 13 '-

By following manner, to the uncrosslinked sheet rubber for compression rubber layer, adhesive rubber layer and back side rubber layer 11 ', 12 ', 13 ' carry out the making processing containing cellulose family superfine fibre.

First, cellulose family superfine fibre is put into the rubber constituent plasticated to be kneaded, make it scattered.

Wherein, as rubber constituent cellulose family superfine fibre process for dispersing, for example, following methods can be enumerated： Cellulose family superfine fibre will be made to be distributed to the dispersion in water (gel) to put into the rubber constituent plasticated by mill, Moisture is vaporized while they are kneaded；Cellulose family superfine fibre will be made to be distributed to the dispersion in water (gel) and rubber Glue latex mixes and made the masterbatch for cellulose family superfine fibre/rubber that moisture vaporizes to obtain to put into the rubber constituent plasticated In；Cellulose family superfine fibre will be made to be distributed to the dispersion in solvent to mix with making rubber constituent be dissolved into the solution in solvent And the masterbatch for cellulose family superfine fibre/rubber that solvent evaporation obtains is set to put into the rubber constituent plasticated；Fiber will be made The crushed material that dispersion (gel) freeze-drying that plain class superfine fibre is distributed in water obtains puts into the rubber constituent plasticated In；And that the cellulose family superfine fibre of hydrophobization is put into the rubber constituent plasticated is medium.

Then, various rubber chemicals are put into while rubber constituent and cellulose family superfine fibre are kneaded, continued It is kneaded, so as to make uncrosslinked rubber composition.

Then, the uncrosslinked rubber composition is shaped to sheet by calendering formation etc..

Furthermore, it is possible to coordinate various rubber chemicals in rubber constituent, it is kneaded using kneader, Banbury mixer etc. Machine is kneaded, and obtained uncrosslinked rubber composition is shaped into sheet by calendering formation etc., fibre is not contained so as to make Tie up the material of plain class superfine fibre.

- cored wire 14'-

Adhesion process is carried out to cored wire 14'.Specifically, what is be impregnated in the RFL aqueous solution and heat is carried out to cored wire 13 ' RFL adhesion process.Additionally, it is preferred that the substrate for being impregnated in substrate adhesion process liquid and heating is carried out before RFL adhesion process is carried out Adhesion process.Furthermore, it is possible to before RFL adhesion process is carried out be impregnated in the rubber paste adhesion process of rubber paste and drying.

As shown in figure 5, covering rubber bush 35 on the cylinder 34 of smooth surface, winding is stacked gradually on their outer circumference and is used Uncrosslinked sheet rubber 13 ' in back side rubber layer and the uncrosslinked sheet rubber 12 ' for adhesive rubber layer, in the above relatively Cored wire 14 ' is spirally wound in the internal model 31 of cylindrical shape, then winds not handing over for adhesive rubber layer successively in the above Join sheet rubber 12 ' and the uncrosslinked sheet rubber 11 ' for compression rubber layer.Now, formed with stacking on rubber bush 35 Formed body B '.

<Cross-linking process step>

The rubber bush 35 for being provided with stacking formed body B ' is dismantled from cylinder 34, as shown in fig. 6, being set to After being embedded in the state of the inner peripheral surface side of external mold 32, as shown in fig. 7, internal model 31 to be positioned to the rubber bush for being arranged at external mold 32 In 35, carry out closed.

Then, external mold 32 is heated, also, the inside sealed to internal model 31 is injected pressure-air etc. and pressurizeed.Now, Internal model 31 is expanded, and the uncrosslinked sheet rubber 11 ', 12 ', 13 ' for being laminated formed body B ' is compressed into the forming surface into external mold 32, in addition, Their crosslinking is carried out, also, makes cored wire 14' composite integrateds, it is final as shown in figure 8, molding the band plate S of cylindrical shape.This Outside, band plate S forming temperature for example can be 100~180 DEG C, and briquetting pressure for example can be 0.5~2.0MPa, and shaping Time for example can be 10~60 minutes.

By the inner pressure relief of internal model 31, release it is closed, take out between internal model 31 and external mold 32 by rubber bush 35 into The band plate S of type, band plate S is cut into wheel shape according to the width of regulation, will inside and outside be overturn, so as to manufacture polywedge bet B.

- embodiment-

[test assessment 1]

Use with the rubber composition that neoprene (also referred to as CR rubber) is rubber constituent, make embodiment 1-1~1-5 And comparative example 1-1~1-8 trimming V-belt.Respective detailed content is also shown in table 1.

By CR latex, (Showa electrician company produces trade name：Chloroprene842A) with solving method for fiber system by machinery The aqueous dispersion mixing for the cellulose superfine fibre (production of king paper company) made, makes water vapor, makes the ultra-fine fibre of cellulose Dimension/CR masterbatch.

Then, by CR, (Showa electrician company produces trade name：ChloropreneGS) plasticate, also, input is female thereto Material is kneaded.For the input amount of masterbatch, in the case where CR total amounts are 100 mass parts, cellulose family superfine fibre contains Measure as 20 mass parts.

Then, CR and cellulose family superfine fibre are kneaded, also, divided wherein relative to the CR of 100 mass parts Carbon black HAF (the East Sea Tan Su companies production trade names as reinforcement material of 20 mass parts are not put into：SEAST3), 5 mass parts Aromatic polyamide chopped fiber (Di Ren companies production Technora (registration mark)), oil (the Japanese SUN oil of 5 mass parts Company produces trade name：SUNPAR2280), the zinc oxide as vulcanization accelerator additive of 5 mass parts (give birth to by chemical industrial company of boundary Production), the magnesia of 4 mass parts (consonance chemical industrial company production trade name：Kyowamag150), continue to be kneaded, so as to make Uncrosslinked rubber composition.

The uncrosslinked rubber composition is shaped to sheet, as forming band main body (compression rubber layer, adhesive rubber Layer and stretching rubber layer) uncrosslinked sheet rubber, make embodiment 1-1 trimming V-belt.

In addition, for cored wire, twisted thread using the polyester fiber system for implementing adhesion process.

CR is solved into method for fiber (at TEMPO oxidations with 10 mass parts of the CR relative to 100 mass parts by chemistry Reason) the cellulose superfine fibre of manufacture, 20 mass parts as the carbon black HAF of reinforcement material, the oil of 5 mass parts, 5 mass parts Pressurization is kneaded as the zinc oxide of vulcanization accelerator additive and the magnesia of 4 mass parts, makes uncrosslinked rubber composition.

As for forming the uncrosslinked sheet rubber with main body, in addition to using the uncrosslinked rubber composition, make With the embodiment 1-2 of embodiment 1-1 same structures trimming V-belt.

As for formed the uncrosslinked sheet rubber with main body, except mismatching carbon black and being carried out by chemical mode The content for solving fine cellulose family superfine fibre is arranged to beyond 20 mass parts relative to the rubber constituent of 100 mass parts, is made With the embodiment 1-3 of embodiment 1-2 same structures band.

As for forming the uncrosslinked sheet rubber with main body, except the rubber constituent relative to 100 mass parts is by fragrance Polyamide chopped fiber is arranged to 10 mass parts and also coordinates the nylon short fibre of 10 mass parts (to be produced from by TORAY companies The wheel cord that forms of nylon66 fiber in cut the chopped fiber of 3mm length) beyond, make and the realities of embodiment 1-2 same structures Apply the band of a 1-4.

As for form the uncrosslinked sheet rubber with main body, except replace 20 mass parts aromatic polyamide chopped fiber And coordinate beyond the nylon short fibre of 20 mass parts, make the band with the embodiment 1-5 of embodiment 1-2 same structures.

As for forming the uncrosslinked sheet rubber with main body, in addition to mismatching cellulose family superfine fibre, make With the comparative example 1-1 of embodiment 1-1 same structures band.

As for form the uncrosslinked sheet rubber with main body, except by carbon black HAF use level relative to 100 mass parts Rubber constituent be arranged to beyond 70 mass parts, make the band with the comparative example 1-2 of comparative example 1-1 same structures.

As for form the uncrosslinked sheet rubber with main body, except replace 20 mass parts aromatic polyamide chopped fiber And coordinate beyond the nylon short fibre of 20 mass parts, make the band with the comparative example 1-3 of comparative example 1-1 same structures.

As for form the uncrosslinked sheet rubber with main body, except by carbon black HAF use level relative to 100 mass parts Rubber constituent be arranged to 70 mass parts and replace 20 mass parts aromatic polyamide chopped fiber and coordinate 20 mass parts Beyond nylon short fibre, the band with the comparative example 1-4 of comparative example 1-2 same structures is made.

As for form the uncrosslinked sheet rubber with main body, except also coordinating the rubber constituent relative to 100 mass parts 20 mass parts non-superfine fibre (10~100 μm or so of fibre diameter) cellulose fibre (king paper company produce sulphur Hydrochlorate is starched) beyond, make the band with the comparative example 1-5 of comparative example 1-1 same structures.

As for form the uncrosslinked sheet rubber with main body, except mismatch carbon black HAF and coordinate relative to 100 matter Beyond the cellulose fibre for measuring the non-superfine fibre of 20 mass parts of the rubber constituent of part, make and comparative example 1-5 same structures Comparative example 1-6 band.

As for forming the uncrosslinked sheet rubber with main body, in addition to mismatching aromatic polyamide chopped fiber, make Make the band with the comparative example 1-7 of embodiment 1-2 same structures.

As for form the uncrosslinked sheet rubber with main body, it is short except mismatching carbon black HAF and aromatic polyamide Beyond fiber, the band with the comparative example 1-8 of embodiment 1-2 same structures is made.

[table 1]

* (30 minutes or so) normal off splits in a short time, can not measure

(test assessment method)

Various assessment results are shown in table 1.

After the sample Freezing smashing of the inner rubber layer of embodiment 1-1~1-5 each band, shown using transmission electron Micro mirror (TEM) observes its section, also, 50 cellulose superfine fibre measurement fibre diameters of any selection, obtains its average As avarage fiber diameter.In addition, obtain the maximum and minimum value of the fibre diameter in 50 cellulose superfine fibres.

The cracking resistance life-span of band is the index for representing rubber crack resistance, and the life-span is more long more excellent.

Fig. 9 represents the grinding test bench 40 for measuring the cracking resistance life-span.For assessing the band grinding test bench 40 of crack resistance Possess pulley diametersThe driven pulley 42 that driving pulley 41 for 40mm and the pulley diameters being arranged on the right side of it are 40mm. Driven pulley 42 is arranged to left and right movably, enables to bear axial load (deadweight DW), applies tension force to trimming V-belt B.

By embodiment 1-1~1-5 and comparative example 1-1~1-8 each tape wrapping grinding test bench 40 driving pulley Between 41 and driven pulley 42, driven pulley 42 bears 600N axial load to the right, applies tension force to band, also, 100 DEG C environment temperature under, driving pulley 41 is rotated with 3000rpm rotating speed, so as to operate band.Then, periodically shut down Band, visually confirm whether produce slight crack on trimming V-belt B, using until confirming the band duration of runs of generation slight crack as cracking resistance Life-span.In addition, in the case where also producing slight crack without confirmation more than 200 hours, terminate to test at the moment.

<High-tension band field investigation>

Durable assess as the performance of band, the Accelerated evaluation in life-span of high-tension under the conditions of deadweight is effective.If recognize Belt length change for the permanent elongation based on cored wire is fixed, then the permanent deformation of rubber components and abrasion are bigger, operating Front and rear distance between axles change is bigger.Thus, it is the smaller the better to operate front and rear distance between axles change.The mass change of the front and rear band of operating It is the index for the wear resistance for representing rubber components, it is the smaller the better.

Figure 10 represents high-tension band grinding test bench 50.

The high-tension band grinding test bench 50 of two axles design possesses pulley diametersDriving V belt wheels 51 for 100mm and set Put the driven V belt wheels 52 that the pulley diameters on the right side of it are 60mm.Driven V belt wheels 52 are arranged to movable with left and right, to make it possible to Axial load (deadweight DW) is enough born, tension force is applied to band.

Each quality with B before operating of embodiment 1-1~1-6 and comparative example 1-1~1-4 is measured, as initial mass.

Then, following between centers load will be applied to driven pulley with high-tension band grinding test bench 50. That is, apply in the example (embodiment 1-1~1-3, comparative example 1-1 and 1-2) for being independently matched with aromatic polyamide chopped fiber 1000N, coordinate both aromatic polyamide chopped fiber and nylon short fibre example (embodiment 1-4, comparative example 1-5 with And 1-6) in apply 800N, apply in the example (embodiment 1-5, comparative example 1-3 and 1-4) of nylon short fibre is independently matched with 500N, apply 500N in the example (comparative example 1-7 and 1-8) of unmated chopped fiber.

First, environment temperature is set as 100 DEG C, as no load condition, makes driving pulley in a manner of 5000rpm After operating 10 minutes, distance between axles is measured, as initial distance between axles.

Then, in the state of following load is applied to driven V belt wheels 52, driving V belt wheels 51 are made in a manner of 5000rpm Rotation.That is, in the example (embodiment 1-1~1-3, comparative example 1-1 and 1-2) of aromatic polyamide chopped fiber is independently matched with Apply 40Nm, coordinate example (embodiment 1-4, the comparative example 1-5 of both aromatic polyamide chopped fiber and nylon short fibre And 1-6) in apply 30Nm.Applied in the example (embodiment 1-5, comparative example 1-3 and 1-4) for being independently matched with nylon short fibre Add 20Nm, apply 20Nm in the example (comparative example 1-7 and 1-8) of unmated chopped fiber.

After operating 200 hours, distance between axles during zero load remain in operation 10 minutes is measured, as the between centers after operating Away from.

The distance between axles after operating is calculated by following manner and changes (%).

Distance between axles changes (%)

Distance between axles × 100 before=(distance between axles before distance between axles-operating after operating)/operating

In addition, the band weight after measurement operating, as the band weight after operating.The weight that band is calculated by following manner becomes Change.

Band weight change (%)

Band weight × 100 before=(before operating with the band weight after weight-operating)/operating

Wherein, comparative example 1-7 and 1-8 in the short time after operation start (30 minutes or so) band fracture, Wu Fajin The related measurement of row high-tension field investigation.

Figure 11 represents friction coefficient measuring apparatus.

The friction coefficient measuring apparatus 40 is by experiment belt wheel 82 and is arranged on the load cell 83 of its side and forms, the examination Belt wheel 82 is tested to be made up of the rib wheel that pulley diameters are 75mm.Experiment belt wheel 82 is made up of iron type materials S45C.The examination of trimming V-belt Test piece 81 from load cell 83 along after horizontal-extending on experiment belt wheel 82, i.e. with relative to the winding of experiment belt wheel 82 Angle is that 90 ° of mode is set.

Embodiment 1-1~1-6 and comparative example 1-1~1-4 each trimming the V-belt not operated is cut off, makes trimming V The test film 81 of shape band, its one end is fixed on load cell 83, then on experiment belt wheel 82, hangs and pacify in the other end Fill counterweight 84.Then, in 25 DEG C of environment temperature, experiment belt wheel 82 is made on the direction for declining counterweight 84 with 43rpm rotating speed Rotation, at the time of 60 seconds after rotation starts, the experiment belt wheel 82 and load cell of test film 81 are detected by load cell 83 The tension force Tt that horizontal component between 83 is born.In addition, the vertical component institute of the experiment belt wheel 82 and counterweight 84 of test film 81 Bearing tension force Ts is the weight 17.15N of counterweight 84.Then, the formula based on Euler, compression is obtained by following formula (1) Friction coefficient μ during rubber layer dry tack free.In addition, θ=pi/2.

In addition, implementing same experiment with the trimming V-belt after field investigation to high-tension, inner rubber layer surface is obtained Coefficient of friction when drying.Then, the ratio between coefficient of friction when drying after coefficient of friction and the operating when not operating dry is obtained (coefficient of friction (after operating)/coefficient of friction (not operating)).The ratio between coefficient of friction before and after the operating is the change of coefficient of friction Index, for the ratio closer to 1, power transitivity is more stable, is preferable.

[formula 1]

High-tension band field investigation after, by band from high-tension band grinding test bench 50 on pull down, visually confirm with band The contact portion of wheel and the adhesive wear that rubber whether occurs with wheel surface.

The index that adhesive wear is the resistance to adhesive wear for representing rubber is whether there is after high-tension field investigation.Generation adhesion mill Damage is that the reason for causing abnormal sound, vibration and belt wheel fixation of band etc., adhesive wear does not preferably occur.

After high-tension band field investigation, the tension test of out tape, by the fracture strength of band divided by the cored wire of fracture Radical is embedded to, so as to measure the strength after a cored wire operating.

In addition, the strength of a cored wire before measuring the operating of same batch band in the same way, is asked by following manner Go out the strength retention of band.Result is represented in table 1.

The strength retention (%) of band

Strength × 100 of a cored wire before strength/operating of a cored wire after=operating

The strength retention of band after high-tension field investigation is to represent that the damage to the anti-tensile body (cored wire) of the experiment is big Small index.In the case of V-belt, because the permanent deformation of bottom rubber causes bending, the local deformation of cored wire is set to become big, Due to the abrasion of rubber, make to diminish relative to the winding diameter of belt wheel, therefore, cored wire deformation can be increased, damaged.In addition, When if the coefficient of friction of rubber becomes big, band separates with belt wheel and belt wheel separation property it is poor, cause the stimulation of inverse bending, rush Enter cored wire fatigue.Such case is combined type effect, therefore, it is possible to judge that it is higher for the strength retention of band, then cover cored wire Rubber performance it is higher.

(test assessment result)

Experimental result is shown in table 1.

It can be seen from table 1, the distribution of the fibre diameter of embodiment 1-1~1-5 cellulose superfine fibre is relatively broad.

Use at the same time in cellulose family superfine fibre and embodiment 1-1~1-5 of other chopped fibers, the band cracking resistance life-span For more than 200 hours.In addition, after high-tension field investigation, the change of distance between axles turns to 1~2%, and band weight change is 2~3%, Adhesive wear does not occur, the strength retention of band is 88~90%.Also, the coefficient of friction before and after high-tension field investigation it Than being 0.95.In embodiments, the species (machinery solution is fine and chemistry solution is fine) of cellulose family superfine fibre, chopped fiber Species (aromatic polyamide chopped fiber and nylon short fibre) is different, but is obtained for good result.Embodiment 1-3's In the case of, do not coordinate carbon black, the other embodiment (1-2,1-4,1-5) with the cellulose family superfine fibre using identical type Compare, add the use level of cellulose family superfine fibre.I.e., it is possible to carbon black is replaced with to cellulose family superfine fibre completely. In this case, it is identical with the result of other embodiment, the rubber composition without using carbon black can be set.

On the other hand, comparative example 1-1~1-4 carry out it is based on aromatic polyamide chopped fiber or nylon short fibre plus By force, still, band is formed by the rubber of unmated cellulose family superfine fibre.

Carbon black use level for 20 mass parts comparative example 1-1 and 1-3 in, band the cracking resistance life-span be more than 200 hours, Identical with embodiment, no adhesive wear, coefficient of friction ratio is 0.9, more close with embodiment.But high-tension field investigation The mass change of front and rear band is 20%, the wear resistance extreme difference of rubber.As a result, the change of distance between axles is also larger, it is 20%. It is 31 or 33% also, the strength retention after operating is extremely low.The reason is that too high coefficient of friction causes and belt wheel Separation property it is poor and rubber occurs bending and deformation, therefore, the fatigue of cored wire can be promoted.

On the contrary, in the case of the comparative example 1-2 and 1-4 of 70 more mass parts of the use level of carbon black, rubber it is resistance to Abrasiveness (band mass change) can be improved as 3%, and still, it is 10 or 20 that the band cracking resistance life-span, which deteriorates,.In addition, the distance between axles of band Change greatly, be 10%, the reason is that operating when rubber self-heating it is higher cause rubber permanent deformation it is larger.Also, Generation adhesive wear, coefficient of friction change.Band strength retention after operating is relatively low, is 42 or 48%.The reason is that Coefficient of friction increase causes to be deteriorated with the separation property of belt wheel and the fatigue of the self-heating of rubber promotion cored wire.

Below, comparative example 1-5 and 1-6 is that instead of cellulose family superfine fibre and uses NBSK as large-size Cellulose example.Comparative example 1-5 and comparative example 1-6 difference are whether there is cooperation carbon black.The cracking resistance of the two examples Life-span and wear resistance deteriorate.In addition, it is relatively low with strength retention, promote the fatigue of cored wire.Its reason and comparative example 1-1 and 1-3 are identical.

Comparative example 1-7 and 1-8 be coordinate cellulose family superfine fibre and without the example of the reinforcement based on chopped fiber. Comparative example 1-7 and comparative example 1-8 difference are whether there is cooperation carbon black.The band cracking resistance life-span of the two examples is good, is More than 200 hours, still, in the high-tension field investigation under the conditions of high-tension and high-mechanic, band was damaged in a short time, nothing Method measures the result of projects.The reason is that the spring rate deficiency of bottom rubber, rubber flexural deformation.

As described above, in comparative example 1-1~1-8, while use carbon black and chopped fiber (nylon short fibre, fragrant adoption Acid amides chopped fiber) reinforcement mode, whether the reinforcement mode of cellulose fibre based on non-superfine fibre (comprising coordinating carbon black Two kinds of situations) and use cellulose family superfine fibre and (include without using the reinforcement mode of other chopped fibers and whether coordinate charcoal Two kinds of black situations) desired over-all properties can not be met simultaneously.Particularly, the present embodiment experimental condition this height (100 DEG C) can not meet performance, it is necessary to which use condition is defined into low temperature under warm environment.

On the other hand, by the way that some or all of carbon black are replaced with into cellulose family superfine fibre, and based on chopped fiber Reinforcement mode plays a role together, can meet desired all properties simultaneously.But this is needed in this of the present embodiment Realized under hot conditions.

Its specific mechanism needs Xie Ming, and still, consideration is the reinforcement based on cellulose family superfine fibre with being based on carbon black Reinforcement it is different in reinforcement mode.That is, the motility of rubber is suppressed by the rubber layer (bound rubber) of carbon black absorption, by This, shows carbon black reinforcement.Furthermore, it is contemplated that be not chemically crosslinked in the rubber layer, heat generation becomes big during repeated deformation, hair Raw adhesive wear.On the other hand, realize that the details strengthened is unclear based on cellulose family superfine fibre, therefore, this result It is the fact that be difficult to anticipation.But as the investigation based on result, the motion of the rubber molecule near cellulose family superfine fibre Property may be suppressed unlike the rubber molecule near carbon black, or can be crosslinked and ensured as rubber-like elastic body Property.Stiffening effect based on cellulose family superfine fibre is also likely to be that the mutual three-dimensional network construction of superfine fibre is brought 's.But while effect is brought not associated especially with mechanism using cellulose family superfine fibre and chopped fiber.

In addition, coordinate the cellulose that method for fiber is solved based on machinery of 20 mass parts relative to the rubber constituent of 100 mass parts The embodiment 1-1 of class superfine fibre and the cellulose family superfine fibre based on chemistry solution method for fiber of 10 mass parts of same cooperation Embodiment 1-2 every assessment content is essentially identical.Therefore, obtaining cellulose family superfine fibre based on chemistry solution method for fiber can Equal effect is realized with a small amount of cooperation.

[test assessment 2]

The rubber composition using hydrogenated nbr (H-HBR) as rubber constituent is used, makes embodiment 2-1~2-5 and ratio Compared with example 2-1~2-8 band.Respective detailed content is shown in table 2.

By H-HBR latex, (Japanese ZEON companies produce trade name：ZLX-B) the fiber with being manufactured by machinery solution method for fiber The aqueous dispersion mixing of plain superfine fibre, makes water vapor, makes cellulose superfine fibre/H-HBR masterbatch.

Then, by H-HBR, (Japanese ZEON companies produce trade name：Zetpol2020) plasticate, also, input is female thereto Material is kneaded.For the input amount of masterbatch, in the case where H-HBR total amounts are 100 mass parts, cellulose superfine fibre contains Measure as 20 mass parts.

Then, H-HBR and cellulose superfine fibre are kneaded, also, put into respectively thereto relative to 100 mass parts H-HBR 20 mass parts as the carbon black HAF of reinforcement material, the aromatic polyamide chopped fiber of 20 mass parts, 10 mass parts Oil, 5 mass parts as crosslinking agent organic peroxide (You companies produce trade name：PEROXYMON F40) and 1 (Seiko chemical company produces trade name to the assistant crosslinking agent of mass parts：Hi-Cross M), continue to be kneaded, manufacture uncrosslinked rubber group Compound.

The uncrosslinked rubber composition is shaped to sheet, as forming band main body (compression rubber layer, adhesive rubber Layer and stretching rubber layer) uncrosslinked sheet rubber, make embodiment 2-1 trimming V-belt.

In addition, for cored wire, twisted thread using the polyester fiber system for carrying out adhesion process.

Input CR and the chemistry that passes through relative to the CR of 100 mass parts 10 mass parts solve method for fiber (TEMPO respectively Oxidation processes) the cellulose superfine fibre of manufacture, 20 mass parts as the carbon black HAF of reinforcement material, the oil of 10 mass parts, 5 Being kneaded as the organic peroxide of crosslinking agent and the assistant crosslinking agent of 1 mass parts for mass parts, makes uncrosslinked rubber Composition.

As for forming the uncrosslinked sheet rubber with main body, in addition to using the uncrosslinked rubber composition, make With the embodiment 2-2 of embodiment 2-1 same structures trimming V-belt.

As for form the uncrosslinked sheet rubber with main body, except mismatching carbon black and relative to 100 mass parts The content for the cellulose family superfine fibre that fiber hydrolization is carried out by chemical mode is arranged to beyond 20 mass parts by rubber constituent, Make with

The embodiment 2-3 of embodiment 2-2 same structures band.

As for forming the uncrosslinked sheet rubber with main body, except the rubber constituent relative to 100 mass parts is by fragrance Polyamide chopped fiber is arranged to 10 mass parts and also coordinated beyond the nylon short fibre of 10 mass parts, makes and embodiment 2- The embodiment 2-4 of 2 same structures band.

As for form the uncrosslinked sheet rubber with main body, except replace 20 mass parts aromatic polyamide chopped fiber And coordinate beyond the nylon short fibre of 20 mass parts, make the band with the embodiment 2-5 of embodiment 2-2 same structures.

As for forming the uncrosslinked sheet rubber with main body, except the rubber constituent relative to 100 mass parts is by carbon black HAF use level is arranged to 30 mass parts and mismatched beyond cellulose family superfine fibre, makes tie same with embodiment 2-1 The comparative example 2-1 of structure band.

As for forming the uncrosslinked sheet rubber with main body, except the rubber constituent relative to 100 mass parts is by carbon black HAF use level is arranged to beyond 90 mass parts, makes the band with the comparative example 2-2 of comparative example 2-1 same structures.

As for form the uncrosslinked sheet rubber with main body, except replace 20 mass parts aromatic polyamide chopped fiber And coordinate beyond the nylon short fibre of 20 mass parts, make the band with the comparative example 2-3 of comparative example 2-1 same structures.

As for forming the uncrosslinked sheet rubber with main body, except the rubber constituent relative to 100 mass parts is by carbon black HAF use level is arranged to 90 mass parts and replaces the aromatic polyamide chopped fiber of 20 mass parts and coordinate 20 mass parts Beyond nylon short fibre, the band with the comparative example 2-4 of comparative example 2-1 same structures is made.

As for forming the uncrosslinked sheet rubber with main body, except the rubber constituent relative to 100 mass parts is by carbon black HAF use level is arranged to 20 mass parts and also coordinates the non-super of 20 mass parts of the rubber constituent relative to 100 mass parts Beyond the cellulose fibre of fine fibre, the band with the comparative example 2-5 of comparative example 2-1 same structures is made.

As for forming the uncrosslinked sheet rubber with main body, coordinate except mismatching carbon black HAF relative to 100 mass Beyond the cellulose fibre of the non-superfine fibre of 20 mass parts of the rubber constituent of part, make and comparative example 2-1 same structures Comparative example 2-5 band.

As for forming the uncrosslinked sheet rubber with main body, in addition to mismatching aromatic polyamide chopped fiber, make Make the band with the comparative example 2-7 of embodiment 2-2 same structures.

As for form the uncrosslinked sheet rubber with main body, it is short except mismatching carbon black HAF and aromatic polyamide Beyond fiber, the band with the comparative example 2-8 of embodiment 2-2 same structures is made.

[table 2]

* band fracture in (30 minutes or so) in a short time, can not be measured

(test assessment method)

It is same with test assessment 1, obtain the fibre diameter of the cellulose superfine fibre of embodiment 2-1~2-5 each band Average value, minimum value and maximum.In addition, it is same with test assessment 1, obtain embodiment 2-1~2-5 and comparative example 2-1 The band cracking resistance life-span of~2-8 each band, also, high-tension field investigation is carried out, assess distance between axles change, mass change, abrasion Adhesive wear, strength retention are whether there is after coefficient ratio, experiment.

But environment temperature of the measurement with cracking resistance life-span and high-tension field investigation is arranged to 120 DEG C.In addition, survey Amount, in the case where also producing slight crack without confirmation even more than 300 hours, terminated to try up to the band cracking resistance life-span of 300 hours Test.

(test assessment result)

Experimental result is shown in table 2.

Even if according to table 2 as can be seen that rubber constituent is arranged into H-HBR, can also obtain same with test assessment 1 As a result.Particularly, compared with test assessment 1, even if crack resistance is assessed with the ring of field investigation and high-tension with field investigation Border temperature is higher (120 DEG C), can also obtain good assessment result.The reason is that as a kind of possibility, cellulose family For the stiffening effect of superfine fibre compared with the stiffening effect of carbon black, temperature dependency is smaller.

[test assessment 3]

The rubber composition using EPDM as rubber constituent is used, makes embodiment 3-1~3-5 and comparative example 3-1~3-8 The band for test assessment.Respective detailed content is shown in table 3.

The dispersion of the cellulose superfine fibre manufactured by machinery solution method for fiber will be dispersed with toluene and in toluene In dissolved with EPDM (JSR companies produce trade name：EP33 solution mixing), vaporizes toluene, and making cellulose superfine fibre/ EPDM masterbatch.

Then, EPDM is plasticated, also, input masterbatch is kneaded thereto.For the input amount of masterbatch, EPDM's In the case that total amount is 100 mass parts, the content of cellulose superfine fibre is 20 mass parts.

Then, EPDM and cellulose superfine fibre are kneaded, also, put into respectively thereto relative to 100 mass parts EPDM 20 mass parts as the carbon black of reinforcement material, the aromatic polyamide chopped fiber of 20 mass parts, 10 mass parts oil, 5 mass parts as the organic peroxide of crosslinking agent and the assistant crosslinking agent of 1 mass parts, continue to be kneaded, make uncrosslinked rubber Glue composition.

The uncrosslinked rubber composition is shaped to sheet, as forming band main body (compression rubber layer, adhesive rubber Layer and stretching rubber layer) uncrosslinked sheet rubber, make embodiment 3-1 trimming V-belt.

Relative to the EPDM of 100 mass parts, being made by chemistry solution method for fiber (TEMPO oxidation processes) for 10 mass parts is kneaded The conduct as the carbon black of reinforcement material, the oil of 10 mass parts, 5 mass parts of the cellulose superfine fibre made, 20 mass parts is handed over Join the organic peroxide of agent and the assistant crosslinking agent of 1 mass parts, make uncrosslinked rubber composition.

As for forming the uncrosslinked sheet rubber with main body, in addition to using the uncrosslinked rubber composition, make With the embodiment 3-2 of embodiment 3-1 same structures trimming V-belt.

As for form the uncrosslinked sheet rubber with main body, except mismatching carbon black and being carried out by chemical mode The content of the cellulose family superfine fibre of fiber hydrolization is arranged to beyond 20 mass parts relative to the rubber constituent of 100 mass parts, Make the band with the embodiment 3-3 of embodiment 3-2 same structures.

As for forming the uncrosslinked sheet rubber with main body, except the rubber constituent relative to 100 mass parts is by fragrance Polyamide chopped fiber is arranged to 10 mass parts and also coordinated beyond the nylon short fibre of 10 mass parts, makes and embodiment 3- The embodiment 3-4 of 2 same structures band.

As for form the uncrosslinked sheet rubber with main body, except replace 20 mass parts aromatic polyamide chopped fiber And coordinate beyond the nylon short fibre of 20 mass parts, make the band with the embodiment 3-5 of embodiment 3-2 same structures.

As for form the uncrosslinked sheet rubber with main body, except by carbon black HAF use level relative to 100 mass parts Rubber constituent be arranged to 30 mass parts and mismatch beyond cellulose family superfine fibre, make and same with embodiment 3-1 tie The comparative example 3-1 of structure band.

As for form the uncrosslinked sheet rubber with main body, except by carbon black HAF use level relative to 100 mass parts Rubber constituent be arranged to beyond 90 mass parts, make the band with the comparative example 3-2 of comparative example 3-1 same structures.

As for form the uncrosslinked sheet rubber with main body, except replace 20 mass parts aromatic polyamide chopped fiber And coordinate beyond the nylon short fibre of 20 mass parts, make the band with the comparative example 3-3 of comparative example 3-1 same structures.

As for form the uncrosslinked sheet rubber with main body, except by carbon black HAF use level relative to 100 mass parts Rubber constituent be arranged to 90 mass parts and replace 20 mass parts aromatic polyamide chopped fiber and coordinate 20 mass parts Beyond nylon short fibre, the band with the comparative example 3-4 of comparative example 3-1 same structures is made.

As for form the uncrosslinked sheet rubber with main body, except by carbon black HAF use level relative to 100 mass parts Rubber constituent be arranged to 20 mass parts and also coordinate the non-ultra-fine of 20 mass parts of the rubber constituent relative to 100 mass parts Beyond the cellulose fibre of fiber, the band with the comparative example 3-5 of comparative example 3-1 same structures is made.

As for form the uncrosslinked sheet rubber with main body, except mismatching carbon black HAF and also coordinating relative to 100 Beyond the cellulose fibre of the non-superfine fibre of 20 mass parts of the rubber constituent of mass parts, tie same with comparative example 3-1 is made The comparative example 3-5 of structure band.

As for forming the uncrosslinked sheet rubber with main body, in addition to mismatching aromatic polyamide chopped fiber, make Make the band with the comparative example 3-7 of embodiment 3-2 same structures.

As for form the uncrosslinked sheet rubber with main body, it is short except mismatching carbon black HAF and aromatic polyamide Beyond fiber, the band with the comparative example 3-8 of embodiment 3-2 same structures is made.

[table 3]

* band fracture in (30 minutes or so) in a short time, can not be measured

(test assessment method)

It is same with test assessment 1, obtain the fibre diameter of the cellulose superfine fibre of embodiment 3-1~3-5 each band Average value, minimum value and maximum.In addition, it is same with test assessment 1, obtain embodiment 3-1~3-5 and comparative example 3-1 The band cracking resistance life-span of~3-8 each band, also, high-tension field investigation is carried out, assess distance between axles change, mass change, abrasion Adhesive wear, strength retention are whether there is after coefficient ratio, experiment.

(test assessment result)

Experimental result is shown in table 3.

Even if it can also be obtained same with test assessment 1 and 2 according to table 3 as can be seen that rubber constituent is arranged into EPDM The result of sample.Particularly, compared with test assessment 1, even if crack resistance assesses band field investigation and high-tension band field investigation Environment temperature it is higher (120 DEG C), can also obtain good assessment result.

[embodiment 2]

(polywedge bet B)

Fig. 1 and Fig. 2 is the figure for representing the polywedge bet B involved by embodiment 2.

Polywedge bet B involved by embodiment 2 for example can be that the subsidiary engine for being arranged in the engine room of automobile drives The annular power transmission member of dynamic belt driver etc..For the polywedge bet B involved by embodiment 2, for example, with a length of 700 ~3000mm, with a width of 10~36mm, tape thickness is 4.0~5.0mm.

Polywedge bet B involved by embodiment 2 possesses the polywedge bet main body 10 of rubber system, and the polywedge bet main body 10 is configured to Following three-layer structures：Form the compression rubber layer 11 of the pulley contact part with inner circumferential side, middle adhesive rubber layer 12 and Back side rubber layer 13 with outer circumferential side.Pars intermedia on the thickness direction of the adhesive rubber layer 12 of polywedge bet main body 10, with The mode that the spiral with pitch is formed on bandwidth direction is embedded with cored wire 14.In addition it is also possible to instead of back side rubber layer 13 and The back side is set to strengthen cloth, it is double-deck with adhesive rubber layer 12 that polywedge bet main body 10 is configured to compression rubber layer 11.

Compression rubber layer 11, adhesive rubber layer 12 and back side rubber layer 13 are formed by rubber composition, the building rubber compound Thing is by pressurizeing and utilizing to the uncrosslinked rubber composition heating for coordinating various rubber chemicals in rubber constituent and being kneaded Cross-linking agents and be made.For forming the building rubber compound of compression rubber layer 11, adhesive rubber layer 12 and back side rubber layer 13 Thing can be with identical, can also be different.

In rubber composition for forming compression rubber layer 11, adhesive rubber layer 12 and back side rubber layer 13 at least A kind of distribution containing fibre diameter includes 50~500nm cellulose family superfine fibre.It is preferably used to form compression rubber All rubber compositions of glue-line 11, adhesive rubber layer 12 and back side rubber layer 13 contain cellulose family superfine fibre, still, It is ultra-fine that the rubber composition for the compression rubber layer 11 for being more preferably at least used for formation composition pulley contact part contains cellulose family Fiber.

Polywedge bet B according to involved by embodiment 2, as described above, the compressing rubber for forming polywedge bet main body 10 The distribution model of the rubber composition of layer 11, adhesive rubber layer 12 and back side rubber layer 13 containing fibre diameter at least one of The cellulose family superfine fibre for including 50~500nm is enclosed, accordingly, it is capable to access excellent bending fatigue resistance.In addition, particularly In the case where the rubber composition for forming the compression rubber layer 11 for being used to form contact portion includes cellulose family superfine fibre, Higher wear resistance can be obtained, and the coefficient of friction stablized.

Cellulose family superfine fibre is derived from the fibrous material of cellulose superfine fibre, and the cellulose superfine fibre is by inciting somebody to action The framework ingredient of the fine plant cell wall for disassembling to obtain of string is formed.Raw material as cellulose family superfine fibre is planted Thing, for example, timber, bamboo, rice (straw), potato, sugarcane (bagasse), pasture and water, marine alga etc. can be enumerated.Wherein, it is preferably wooden Material.

For cellulose family superfine fibre, from the aspect of bending fatigue resistance is improved, preferably the distribution of fibre diameter compared with Extensively, the distribution of fibre diameter includes 50~500nm.From the above considerations, the lower limit of the distribution of its fibre diameter is preferred Below 20nm, more preferably below 10nm.According to same insight, preferred more than the 700nm of the upper limit, more preferably more than 1 μm.Fiber The distribution of the fibre diameter of plain class superfine fibre preferably comprises 20nm~700mm, more preferably comprising 10nm~1 μm.

Preferred more than the 10nm of avarage fiber diameter of the cellulose family superfine fibre included in rubber composition, more preferably More than 20nm, additionally, it is preferred that below 700nm, more preferably below 100nm.

After the sample Freezing smashing of rubber composition, its section is observed using transmission electron microscope (TEM), and Any 50 cellulose family superfine fibre measurement fibre diameters of selection, cellulose family superfine fibre is obtained based on the measurement result Distribution of fiber diameters.In addition, obtain the average conduct of the fibre diameter of optional 50 cellulose family superfine fibres The avarage fiber diameter of cellulose family superfine fibre.

Cellulose family superfine fibre can be the ultra-fine fibre of cellulose family of the high aspect ratio manufactured by machinery solution method for fiber Dimension or the acicular crystals manufactured by chemistry solution method for fiber.Wherein, preferably manufactured by machinery solution method for fiber.Separately Outside, as cellulose family superfine fibre, can use simultaneously the cellulose family superfine fibre that is manufactured by machinery solution method for fiber with And the cellulose family superfine fibre manufactured by chemistry solution method for fiber.As the fiber decomposition device for machinery solution method for fiber, for example, The kneading machines such as twin shaft kneading machine, high pressure homogenizer, grinder, sand mill etc. can be enumerated.As for chemistry solution method for fiber Processing, for example, sour hydrolysis process etc. can be enumerated.

For the content of the cellulose family superfine fibre in rubber composition, from the aspect of bending fatigue resistance is improved, Relative to the rubber constituent of 100 mass parts, preferably more than 1 mass parts, more preferably more than 3 mass parts, further preferred 5 mass parts More than, additionally, it is preferred that below 30 mass parts, more preferably below 20 mass parts, below further preferred 10 mass parts.

As rubber chemicals, can enumerate reinforcement material, processing oil, processing aid, vulcanization accelerator additive, crosslinking agent, Vulcanization accelerator, age resister etc..

As reinforcement material, can for example be enumerated in carbon black channel black, SAF, ISAF, N-339, HAF, N-351, The thermal black such as the furnace blacks such as MAF, FEF, SRF, GPF, ECF, N-234, FT, MT, acetylene carbon black etc..May be used also as reinforcement material To enumerate silica.It is more than reinforcement material preferably wherein one or two kinds of.For the content of reinforcement material, relative to rubber The rubber constituent of 100 mass parts of glue composition, preferably 50~90 mass parts.

As oil, for example, the mineral oilses such as petroleum-type softening agent, paraffin oil oil, castor oil, cottonseed oil, Asia can be enumerated The vegetable oil such as flaxseed oil, rapeseed oil, soybean oil, palm oil, coconut oil, peanut oil, tree are cured, retinal, pine tar.Oil is preferably wherein It is one or two kinds of more than.For the content of oil, relative to the rubber constituent of 100 mass parts of rubber composition, such as can To be 10~30 mass parts.

As processing aid, for example, the metal salt of stearic acid, Tissuemat E, aliphatic acid can be enumerated etc..Processing aid is excellent Select it is therein it is one or two kinds of more than.For the content of processing aid, relative to the rubber of 100 mass parts of rubber composition Composition, such as can be 0.5~2 mass parts.

As vulcanization accelerator additive, for example, the metal oxides such as zinc oxide (zinc white), magnesia, metal carbon can be enumerated Hydrochlorate, aliphatic acid and its derivative etc..It is more than vulcanization accelerator additive preferably wherein one or two kinds of.Helped for vulcanization promotion The content of agent, relative to the rubber constituent of 100 mass parts of rubber composition, such as can be 3~7 mass parts.

As age resister, resist for example, benzimidazole age resister, amine ketone age resister, Diamines can be enumerated Aging agent, phenol age resister etc..It is more than age resister preferably wherein one or two kinds of.For containing for age resister Amount, relative to the rubber constituent of 100 mass parts, such as can be 0.1~5 mass parts.

As assistant crosslinking agent, for example, can enumerate maleimide, TAIC, 1,2- polybutadiene, oximes, guanidine and Trimethylol-propane trimethacrylate class material and liquid rubber etc..Assistant crosslinking agent preferably wherein one or two kinds of More than.Relative to the rubber constituent of 100 mass parts, such as can be 0.5~30 mass parts for assistant crosslinking agent content.

As crosslinking agent, sulphur and organic peroxide can be enumerated.As crosslinking agent, sulphur can be coordinated, can also be matched somebody with somebody Organic peroxide is closed, can also both uses simultaneously.For the use level of crosslinking agent, in the case of sulphur, relative to rubber The rubber constituent of 100 mass parts of glue composition, such as can be 1~5 mass parts, in the case of organic peroxide, phase For the rubber constituent of 100 mass parts of rubber composition, such as can be 1~5 mass parts.

As vulcanization accelerator, for example, can enumerate thiurams (such as TETD, TT, TRA etc.), thiazoles (such as MBT, MBTS etc.), sulfinylamines (such as CZ etc.), dithiocarbamate (such as BZ-P etc.) etc..Vulcanization accelerator It is more than preferably wherein one or two kinds of.For the content of vulcanization accelerator, relative to 100 mass parts of rubber composition Rubber constituent, such as can be 1~3 mass parts.

, can in the rubber composition for forming compression rubber layer 11, adhesive rubber layer 12 and back side rubber layer 13 Using containing fibre diameter as more than 10 μm of chopped fiber 16.In particular it is preferred that forming the pressure for forming pulley contact part Contain chopped fiber 16 in the rubber composition of contracting rubber layer 11.In such a situation it is preferred that with along bandwidth in compression rubber layer 11 The mode of direction orientation contains chopped fiber 16, additionally, it is preferred that the chopped fiber 16 exposed on the surface of V-arrangement rib 15 of compression rubber layer 11 A part project from the surface.In addition, chopped fiber 16 can not be the structure for being matched with rubber composition, but in compressing rubber The structure of the surface transplantation chopped fiber of V-arrangement rib 15 of layer 11.

As chopped fiber 16, for example, can enumerate nylon short fibre, vinylon chopped fiber, aromatic polyamide chopped fiber, Polyester staple fiber, continuous chopped fiber.For example, it can will implement the long fibre for the adhesion process for being impregnated in the rear heating such as the RFL aqueous solution Dimension is cut to specific length to manufacture chopped fiber 16.The length of chopped fiber 16 for example can be 0.2~5.0mm, fibre diameter example It such as can be 10~50 μm.

For the content of chopped fiber 16, relative to the rubber constituent of 100 mass parts, preferably more than 5 mass parts, more preferably 10 It is more than mass parts, additionally, it is preferred that below 30 mass parts, more preferably below 20 mass parts.For the content of chopped fiber 16, preferably compare The content of cellulose family superfine fibre is more.The ratio between the content of chopped fiber 16 and the content of cellulose family superfine fibre (chopped fiber 16 Content relative to cellulose family superfine fibre content) preferably more than 1, more preferably more than 2, it is more excellent additionally, it is preferred that less than 15 Select less than 5.For the total content of cellulose family superfine fibre and chopped fiber 16, relative to the rubber constituent of 100 mass parts, preferably It is more than 1 mass parts, more preferably more than 5 mass parts, additionally, it is preferred that below 25 mass parts, more preferably below 15 mass parts.

Twisted thread by what is formed by Fypro, polyester fiber, aromatic polyamide fibre, Fypro etc. come structure Into cored wire 14.The diameter of cored wire 14 for example can be 0.5~2.5mm, the chi in section between the center of cored wire 14 adjacent to each other Very little for example can be 0.05~0.20mm.Implement the adhesion process that there is cohesive relative to polywedge bet main body 10 to cored wire 14.

Below, Figure 12 represents the subsidiary engine driving belt driver 20 using the automobile of the polywedge bet B involved by embodiment 2 Belt wheel design.Subsidiary engine driving belt driver 20 is wound on 4 rib wheels and 6 belt wheels of 2 flat wheels by polywedge bet B Above so as to the snakelike drive type apparatus of passing power.

In the subsidiary engine drives belt driver 20, uppermost position is provided with the electronic-controlled power steering belt wheel as rib wheel 21, the AC generators belt wheel 22 as rib wheel is provided with the lower section of the electronic-controlled power steering belt wheel 21.In addition, in electronic-controlled power steering belt wheel 21 lower left is provided with the straining pulley 23 as flat wheel, and the lower section of the straining pulley 23 is provided with the water pump as flat wheel Belt wheel 24.Also, the crankshaft pulley 25 as rib wheel is provided with the lower left of straining pulley 23, on the right side of the crankshaft pulley 25 Lower section is provided with the air-conditioning belt wheel 26 as rib wheel.These belt wheels for example can be by punch process part, casting or the Buddhist nun of metal The synthetic resins such as imperial resin, phenolic resin are formed, in addition, pulley diametersCan be 50~150mm.

Also, in the subsidiary engine drives belt driver 20, polywedge bet B is arranged to：Rolled up in a manner of the side contacts of V-arrangement rib 16 Be wound on electronic-controlled power steering belt wheel 21, then, in a manner of with rear-face contact on straining pulley 23 after, with the side of V-arrangement rib 16 The mode of contact is successively in crankshaft pulley 25 and air-conditioning belt wheel 26, then, in a manner of with rear-face contact wound on On Water-pump belt wheel 24, then, in a manner of the side contacts of V-arrangement rib 16 on AC generators belt wheel 22, finally return to power Turn to belt wheel 21.The span length of the i.e. band of length for the polywedge bet B being erected between belt wheel for example can be 50~300mm.Between belt wheel The misalignment that can occur can be 0~2 °.

(polywedge bet B manufacture method)

The manufacture method of polywedge bet B involved by embodiment 2 is identical with the polywedge bet involved by embodiment 1.

- embodiment-

[polywedge bet]

Make the polywedge bet of example 4 below -1~embodiment 4-9 and comparative example 4.Each details is shown in table 4.

It is modulated at cellulose powder (the Nippon Paper company production trade name being dispersed with toluene using timber as raw material： KCFLOCK W-50GK) dispersion, using high pressure homogenizer, the dispersion is impinged upon one another, cellulose powder be separated into Cellulose superfine fibre, obtain being dispersed with the dispersion of cellulose superfine fibre in toluene.Thus, method for fiber is solved by machinery Cellulose superfine fibre is manufactured, in addition, not carrying out silicic acid anhydride.

Then, by the dispersion that cellulose superfine fibre is dispersed with toluene with being dissolved with EPDM in toluene (JSR companies produce trade name to rubber：EP33, hereinafter referred to as " EPDM ") solution coordinate, vaporize toluene, make cellulose surpass Fine fibre/EPDM masterbatch.

Then, EPDM is plasticated, also, input masterbatch is kneaded thereto.For the input amount of masterbatch, EPDM's In the case that total amount is 100 mass parts, the content of cellulose superfine fibre is 1 mass parts.

Then, EPDM and cellulose superfine fibre are kneaded, also, put into respectively thereto relative to 100 mass parts (Mitsubishi Chemical Ind produces trade name to the HAF carbon blacks of EPDM 60 mass parts：DiablackH), the processing oil of 15 mass parts (SUN oil companies produce trade name：SUNPAR2280), (new Japan Chemical is public for the stearic acid as processing aid of 1 mass parts Department's production trade name：Stearic acid 50S), 5 mass parts as vulcanization accelerator additive zinc oxide (chemical company of boundary produce commodity Name：Three kinds of zinc oxide), the benzimidazole age resisters of 2.5 mass parts (the emerging chemical industrial company's production trade name of imperial palace： NocracMB), (Xi Jing chemical companies produce trade name to the sulphur as crosslinking agent of 2.3 mass parts：Oily sulphur) and 2 mass parts Thiurams vulcanization accelerator (the emerging chemical industrial company's production trade name of imperial palace：Nocseller TET-G), continue to be kneaded, So as to make uncrosslinked rubber composition.

Using the uncrosslinked rubber composition, the implementation with forming compression rubber layer using grain direction as bandwidth direction is made The embodiment 4-1 of the same structure of mode 2 polywedge bet.

For embodiment 4-1 polywedge bet, with a length of 1400mm, with a width of 2.2mm, tape thickness 4.5mm, V-arrangement rib quantity For 3.In addition, adhesive rubber layer and back side rubber layer be not by containing the building rubber compound of cellulose superfine fibre and chopped fiber Thing is formed, and cored wire is twisted thread by the polyester fiber system for implementing adhesion process and formed.

In addition to the content of cellulose superfine fibre is arranged into 3 mass parts relative to the rubber constituent of 100 mass parts, The polywedge bet for making embodiment 4-2 same with embodiment 4-1.

In addition to the content of cellulose superfine fibre is arranged into 5 mass parts relative to the rubber constituent of 100 mass parts, The polywedge bet for making embodiment 4-3 same with embodiment 4-1.

Except by the content of cellulose superfine fibre relative to the rubber constituent of 100 mass parts be arranged to 10 mass parts with Outside, the polywedge bet for making embodiment 4-4 same with embodiment 4-1.

Except by the content of cellulose superfine fibre relative to the rubber constituent of 100 mass parts be arranged to 15 mass parts with Outside, the polywedge bet for making embodiment 4-5 same with embodiment 4-1.

Except by the content of cellulose superfine fibre relative to the rubber constituent of 100 mass parts be arranged to 25 mass parts with Outside, the polywedge bet for making embodiment 4-6 same with embodiment 4-1.

Except containing the rubber constituent relative to 100 mass parts in uncrosslinked rubber composition for compression rubber layer (Di Ren companies produce trade name to the nylon short fibre of 14 mass parts：CFN3000 fibre diameters：26 μm of fibre lengths：3mm) with Outside, the polywedge bet for making embodiment 4-7 same with embodiment 4-1.The content of chopped fiber and the content of cellulose family superfine fibre The ratio between (" B/A " of table 4) be 14.Relative to the rubber constituent of 100 mass parts, cellulose family superfine fibre and chopped fiber it is total Content (" A+B " of table 4) is 15 mass parts.

Except containing the rubber constituent relative to 100 mass parts in the uncrosslinked rubber composition for compression rubber layer 12 mass parts nylon short fibre beyond, the polywedge bet for making embodiment 4-8 same with embodiment 4-2.The content of chopped fiber It is 4 with the ratio between the content of cellulose family superfine fibre (B/A).Relative to the rubber constituent of 100 mass parts, the ultra-fine fibre of cellulose family The total content (A+B) of dimension and chopped fiber is 15 mass parts.

Except containing the rubber constituent relative to 100 mass parts in the uncrosslinked rubber composition for compression rubber layer 10 mass parts nylon short fibre beyond, the polywedge bet for making embodiment 4-9 same with embodiment 4-3.The content of chopped fiber It is 3 with the ratio between the content of the cellulose family superfine fibre content of cellulose family superfine fibre (content of chopped fiber relative to).Phase For the rubber constituent of 100 mass parts, the total content of cellulose family superfine fibre and chopped fiber is 15 mass parts.

Except not containing cellulose superfine fibre in the uncrosslinked rubber composition for compression rubber layer and containing Beyond nylon short fibre relative to 15 mass parts of the rubber constituent of 100 mass parts, comparison example same with embodiment 4-1 4 polywedge bet.

[table 4]

(test assessment method)

The sample of the rubber composition of the compression rubber layer of each polywedge bets of composition embodiment 4-1~4-5 of collection is freezed After crushing, its section, also, arbitrarily 50 fiber measurement fibre diameters of selection are observed using scanning electron microscope (SEM), Its average is obtained as avarage fiber diameter.In addition, obtain the maximum of the fibre diameter in 50 cellulose superfine fibres And minimum value.

Figure 17 represents friction coefficient measuring apparatus 140.

The friction coefficient measuring apparatus 140 is by experiment belt wheel 141 and is arranged on the load cell 142 of its side and forms, The experiment belt wheel 141 is made up of the rib wheel that pulley diameters are 75mm.Experiment belt wheel 141 is made up of the material S45C of iron class.More wedges The test film 143 of band from load cell 142 along after horizontal-extending on experiment belt wheel 141, i.e. with testing belt wheel 141 Winding angle be that 90 ° of mode is set.

Each polywedge bet of embodiment 4-1~4-9 and comparative example 4 is cut off, the test film 143 of banding is made, by one End is fixed on load cell 142, flexing test belt wheel 141, and installation counterweight 144 is hung in the other end.Then, in environment temperature 25 DEG C, experiment belt wheel 141 is set to be rotated with 43rpm rotating speed on the direction for declining counterweight 144,60 seconds after rotation starts Moment, the horizontal component detected by load cell 142 between experiment belt wheel 141 and the load cell 142 of test film 143 are held The tension force Tt received.In addition, the vertical component institute bearing tension force Ts of the experiment belt wheel 141 of test film 143 and counterweight 144 is counterweight 144 weight is 17.15N.Then, the formula based on Euler, compressing rubber layer surface is obtained by following formula (2) and done Friction coefficient μ when dry.In addition, θ=pi/2.

[formula 2]

In addition, experiment belt wheel 141 on water is set, implement same experiment when water is done, then, obtain from water do when The difference of coefficient of friction when subtracting dry in coefficient of friction.

Figure 18 represents the design of the belt wheel with grinding test bench 150 for assessing wear resistance.For assessing wear resistance Band grinding test bench 150 possess pulley diametersDriving rib wheel 151 for 60mm and the pulley diameters being arranged on the right side of it are 60mm driven rib wheel 152.Driven rib wheel 152 is arranged to left and right movably, enables to bear axial load (deadweight DW), right Polywedge bet B applies tension force.

For embodiment 4-1~embodiment 4-9 and each polywedge bet of comparative example 4, after band quality is measured, wound on Between the driving rib wheel 151 with grinding test bench 150 and driven rib wheel 152 for assessing wear resistance, driven rib wheel 152 is to the right 490N axial load is born in side, applies tension force to polywedge bet B, also, applies 5.9kW (8PS) rotary load, in normal temperature ring Under border, driving rib wheel 151 is rotated with 3500rpm rotating speed, operate band.Then, shut down in operation start after 24 hours Band operating, measures the band quality of polywedge bet, and obtain the percentage of Mass lost amount.

Figure 19 represents the design of the belt wheel with grinding test bench 160 for assessing bending fatigue resistance.

Band grinding test bench 160 for assessing bending fatigue resistance possesses pulley diametersFor 60mm driving rib wheel 161st, the pulley diameters being disposed there aboveFor 60mm the first driven rib wheel 162a, be arranged on driving rib wheel 161 and first from The pulley diameters on the right side of dynamic rib wheel 162a pars intermediaFor 60mm the second driven rib wheel 162b and interval apart from top to bottom It is arranged on the pulley diameters on the right side of driving rib wheel 161 and the first driven rib wheel 162a pars intermediaRespectively a pair of 50mm Guide wheel 163.First driven rib wheel 162a is arranged to movable up and down, enables to bear axial load (deadweight DW), to more wedges Band B applies tension force.In addition, in this is used to assess the band grinding test bench 160 of bending fatigue resistance, make polywedge bet B rearwardly Lateral bend, make the change deformation of V-arrangement rib front end big, accelerate flexural fatigue.

For embodiment 4-1~embodiment 4-9 and each polywedge bet of comparative example 4, with compression rubber layer and driving rib wheel 161st, the mode that first and second driven rib wheel 162a, 162b contact, back side rubber layer contact with guide wheel 163 respectively wound on For assessing the band grinding test bench 160 of bending fatigue resistance, in addition, the first driven rib wheel 162a bears 588N's upward Axial load, tension force is applied to polywedge bet B, under 70 DEG C of environment temperature, driving rib wheel 161 is revolved with 5100rpm rotating speed Turn, operate band.Then, periodically shut down band, and visually confirms whether compression rubber layer produces slight crack, will be up to confirming to produce The band duration of runs of raw slight crack is as slight crack generation time.

(test assessment result)

Experimental result is shown in table 2.In addition, in the case of not illustrating below, cellulose superfine fibre contains Amount refers to the mass parts of the rubber constituent relative to 100 mass parts.

The fibre contained is formed in the rubber composition of the compression rubber layer of embodiment 4-1~embodiment 4-9 each polywedge bet The distribution for tieing up the fibre diameter of plain superfine fibre is relatively broad.

The coefficient of friction of comparative example 4 is 0.6, on the other hand, embodiment 4-1~embodiment 4-9 coefficient of friction for 0.6~ 1.1 scope is identical with comparative example 4 or slightly larger than comparative example 4.But embodiment 4-1~embodiment 4-9 all implementations In example, the variable quantity (incrementss) of coefficient of friction when coefficient of friction and water when drying are dry is less than 0.9 during comparative example 4.It is special It is not that the content of cellulose superfine fibre surpasses for embodiment 4-3~embodiment 4-6 more than 5 mass parts and comprising cellulose In embodiment 4-7~embodiment 4-9 of both fine fibre and nylon short fibre, incrementss are -0.05~0.05, close to 0, by This understands, can suppress coefficient of friction increase when water is dry after dabbling.Even in minimum (1 matter of content of cellulose superfine fibre Measure part) embodiment 4-1 in the case of, the change of coefficient of friction turns to 0.5, compared with comparative example 4, and the value close to half.

It follows that by containing cellulose superfine fibre in the rubber composition for forming compression rubber layer, can press down Coefficient of friction after system dabbles changes.Only contain cellulose superfine fibre or short containing nylon not containing nylon short fibre In the case of both fiber and cellulose family superfine fibre, this effect can be played.

The Mass lost amount of comparative example 4 is that wear rate is 3.2%, on the other hand, even cellulose superfine fibre contains 2.8% can also be improved as the embodiment 4-1 of 1 mass parts by measuring, it follows that increasing with the content of cellulose superfine fibre Add, wear resistance, which improves, (in embodiment 4-2~embodiment 4-6, is followed successively by 2.7,2.1,1.9,1.8 and 1.7).But When the content of cellulose superfine fibre is more than 10 mass parts, even if continuing to increase content, also smaller (the embodiment 4-4 of improvement ~embodiment 4-6).

In addition, the Mass lost amount of the comparative example 4 of the nylon short fibre containing 15 mass parts is 3.2%, in addition, cellulose The content of superfine fibre is that the embodiment 4-1 of 1 mass parts is 2.8%, and by comparison, the content of nylon short fibre is 14 mass parts And the embodiment 4-7 that the content of cellulose superfine fibre is 1 mass parts is 2.3%.That is, it follows that by containing nylon Both chopped fiber and cellulose superfine fibre, it can further improve wear resistance.Pass through embodiment 4-7~embodiment 4-9 It is recognized that while the content of cellulose superfine fibre and nylon short fibre add up to it is identical, still, increase cellulose superfine fibre Content ratio can more effectively improve wear resistance.

Nylon short fibre content for 15 mass parts comparative example 4 in, slight crack generation time be 520 hours, with this phase Right, in the content of cellulose superfine fibre is the embodiment 4-1 of 1 mass parts, slight crack generation time is 1205 hours, is improved as More than twice.By the way that the content of cellulose superfine fibre is increased into 3 mass parts, it can further improve slight crack generation time (embodiment 4-2), still, when continuing increase, slight crack generation time shortens (embodiment 4-3~embodiment 4-6) on the contrary.However, Even in cellulose superfine fibre content for 25 mass parts embodiment 4-6 in, slight crack generation time also be 900 hours, with Comparative example 4 is compared and has also obtained significantly improving.

As can be seen here, in the case of using cellulose superfine fibre and nylon short fibre at the same time, can compare Example 4 preferably improves bending fatigue resistance.In addition, the ratio of the content by increasing cellulose superfine fibre, can be improved resistance to Flexural fatigue (embodiment 4-7~embodiment 4-9).

As described above, by containing cellulose superfine fibre in the rubber composition for forming compression rubber layer, can make Make more wedges that the stability (suppression dabble caused change) of coefficient of friction, wear resistance, bending fatigue resistance etc. are improved Band.

[embodiment 3]

(flat rubber belting C)

Figure 13 schematically shows the flat rubber belting C of embodiment 3.Flat rubber belting C involved by embodiment 3 is, for example, to be used to blow It is longer that the requirement used under the high-load conditions such as purposes, the subsidiary engine driving purposes of automobile is transmitted in the drivings such as machine, compressor, generator The power transmission member in life-span.For flat rubber belting C, for example, with a length of 600~3000mm, with a width of 10~20mm, tape thickness is 2~ 3.5mm。

Flat rubber belting C involved by embodiment 3 possesses the inner rubber layer 121 with inner circumferential side, the bonding rubber with outer circumferential side The outer rubber layer 123 of the further outer circumferential side of glue-line 122 and the band is set so as to the flat rubber belting master of integration with overlapped way Body 120.In adhesive rubber layer 122, the pars intermedia in its tape thickness direction, to form the spiral with pitch on bandwidth direction Mode be embedded with cored wire 124.

It is in transverse rectangular that inner rubber layer 121, adhesive rubber layer 122 and outer rubber layer 123, which are respectively formed as section, Banding, formed by rubber composition, the rubber composition by coordinate in rubber constituent various compounding ingredients and be kneaded Uncrosslinked rubber composition heating is pressurizeed and is made using cross-linking agents.The preferred 0.3mm of thickness of inner rubber layer 121 with On, more preferably more than 0.5mm, additionally, it is preferred that below 3.0mm, more preferably below 2.5mm.The thickness of adhesive rubber layer 122 is for example Can be 0.6~1.5mm.The thickness of outer rubber layer 123 for example can be 0.6~1.5mm.

Formed in the rubber composition of inner rubber layer 121, adhesive rubber layer 122 and outer rubber layer 123 at least A kind of distribution containing fibre diameter includes 50~500nm cellulose family superfine fibre.It is preferably formed as inner rubber layer 121st, all rubber compositions of adhesive rubber layer 122 and outer rubber layer 123 contain cellulose family superfine fibre, still, The rubber composition for more preferably at least forming inner rubber layer 121 contains cellulose family superfine fibre.

The rubber composition for forming inner rubber layer 121, adhesive rubber layer 122 and outer rubber layer 123 has and reality Apply the rubber composition identical knot for forming compression rubber layer 111, adhesive rubber layer 112 and back side rubber layer 113 of mode 2 Structure.Cellulose family superfine fibre also has and the identical structure of embodiment 2.

, can be with the rubber composition for forming inner rubber layer 121, adhesive rubber layer 122 and outer rubber layer 123 Contain chopped fiber 126.Particularly preferably contain chopped fiber 126 in the rubber composition for forming inner rubber layer 121.In the feelings Under condition, preferably contain chopped fiber 126 in a manner of being orientated along bandwidth direction in inner side rubber layer 121.Chopped fiber 126 have with The identical structure of embodiment 2.

In addition, cored wire 124 has and the identical structure of embodiment 2.

Flat rubber belting C according to involved by embodiment 3, form the inner rubber layer for forming this flat rubber belting main body 120 121st, distribution of at least one of the rubber composition of adhesive rubber layer 122 and outer rubber layer 123 containing fibre diameter Scope includes 50~500nm cellulose family superfine fibre, accordingly, it is capable to access excellent bending fatigue resistance.In addition, especially It is the situation for containing cellulose family superfine fibre in the rubber composition for forming the inner rubber layer 121 for being used for forming contact portion Under, higher wear resistance can be obtained, and the coefficient of friction stablized.

(flat rubber belting C manufacture method)

The manufacture method of the flat rubber belting C involved by embodiment 3 is illustrated based on Figure 14, Figure 15 and Figure 16.

The manufacture method of flat rubber belting C involved by embodiment 3 have material preparatory process, molding procedure, cross-linking process step with And final manufacturing procedure.

Same mode is made for inner rubber layer, adhesive rubber layer and outer rubber layer not with embodiment 2 Sheet rubber 121 ', 122 ', 123 ' is crosslinked, wherein containing cellulose family superfine fibre.It is in addition, each by coordinating in rubber constituent Kind rubber chemicals, are kneaded, the uncrosslinked rubber composition that will be obtained using kneading machines such as kneader, Banbury mixers Sheet is shaped to by calendering formation etc. and does not contain the piece of cellulose family superfine fibre so as to make.

In addition, it is same with embodiment 2, adhesion process is implemented to cored wire 124 '.

As shown in Figure 14 (a), the uncrosslinked sheet rubber 121 ' for inner rubber layer is wound in the periphery of cylinder mould 145 Afterwards, the uncrosslinked sheet rubber 122 ' for adhesive rubber layer is wound in the above.

Then, as shown in Figure 14 (b), the spirally winding core on the uncrosslinked sheet rubber 122' for adhesive rubber layer After line 124', the uncrosslinked sheet rubber 122 ' for adhesive rubber layer is wound in the above.

Then, as shown in Figure 14 (c), wound on the uncrosslinked sheet rubber 122' for adhesive rubber layer for outside rubber The uncrosslinked sheet rubber 123 ' of glue-line.Thus, formed with stacking formed body C ' on cylinder mould 145.

<Cross-linking process step>

Then, as shown in figure 15, after stacking formed body C ' the covering rubber bush 146 on to cylinder mould 145, by it It is arranged in vulcanizing tank and carries out closed, lead to hyperthermal water vapour etc. and cylinder mould 145 is heated, and apply high pressure, by rubber Rubber sleeve 146 pushes to the radial direction of the side of cylinder mould 145.Now, it is laminated formed body C ' uncrosslinked building rubber compound logistics It is dynamic, and the cross-linking reaction of rubber constituent occurs, moreover, conglutination reaction occurs for cored wire 124', thus, as shown in figure 16, in circle The band plate S of tubular is formed on cylinder mould tool 145.

<Grinding, final manufacturing procedure>

In grinding, final manufacturing procedure, cylinder mould 145 is taken out from vulcanizing tank, will be formed in cylinder mould 145 On cylindric band plate S from mould after, grind its outer peripheral face and/or inner peripheral surface so that thickness uniformizing.

Finally, band plate S is cut according to the width of regulation, so as to make flat rubber belting C.

- embodiment-

[flat rubber belting]

Make example 5 below -1~embodiment 5-6 and comparative example 5-1~comparative example 5-2 flat rubber belting.Table 5 is shown Respective detailed content.

It is same with embodiment 4-1, make cellulose superfine fibre/EPDM masterbatch.

Then, EPDM is plasticated, and input masterbatch is kneaded thereto.It is total in EPDM for the input amount of masterbatch In the case of measuring as 100 mass parts, the content of cellulose superfine fibre is 1 mass parts.

Then, EPDM and cellulose superfine fibre are kneaded, and put into respectively thereto relative to 100 mass parts (Mitsubishi Chemical Ind produces trade name to the HAF carbon blacks of EPDM 40 mass parts：DiablackH), processing oil (SUN of 5 mass parts Oil company produces trade name：SUNPAR2280), stearic acid (the new Japan Chemical company as processing aid of 0.5 mass parts Produce trade name：Stearic acid 50S), 5 mass parts as vulcanization accelerator additive zinc oxide (chemical company of boundary produce trade name： Three kinds of zinc oxide), the benzimidazole age resisters of 2 mass parts (the emerging chemical industrial company's production trade name of imperial palace： NocracMB) and 6 mass parts as crosslinking agent organic peroxide (You companies produce trade name：PEROXYMONF- The mass % of 40 purity 40), continue to be kneaded, make uncrosslinked rubber composition.

Using the uncrosslinked rubber composition, manufacture in a manner of grain direction is bandwidth direction with forming inner rubber layer The same structure of embodiment 3 embodiment 5-1 flat rubber belting.

For embodiment 5-1 polywedge bet, with a length of 1118mm, with a width of 10mm, tape thickness 2.8mm.In addition, bonding rubber Glue-line and outer rubber layer are formed by the rubber composition for not containing cellulose superfine fibre and chopped fiber, and cored wire is by implementing The polyester fiber system of adhesion process twists thread to be formed.

In addition to the content of cellulose superfine fibre is arranged into 3 mass parts relative to the rubber constituent of 100 mass parts, The flat rubber belting for making embodiment 5-2 same with embodiment 5-1.

In addition to the content of cellulose superfine fibre is arranged into 5 mass parts relative to the rubber constituent of 100 mass parts, The flat rubber belting for making embodiment 5-3 same with embodiment 5-1.

Except by the content of cellulose superfine fibre relative to the rubber constituent of 100 mass parts be arranged to 10 mass parts with Outside, the flat rubber belting for making embodiment 5-4 same with embodiment 5-1.

Except by the content of cellulose superfine fibre relative to the rubber constituent of 100 mass parts be arranged to 15 mass parts with Outside, the flat rubber belting for making embodiment 5-5 same with embodiment 5-1.

Except by the content of cellulose superfine fibre relative to the rubber constituent of 100 mass parts be arranged to 25 mass parts with Outside, the flat rubber belting for making embodiment 5-6 same with embodiment 5-1.

In addition to not containing cellulose superfine fibre in the rubber composition for forming inner rubber layer, with embodiment 5- 1 same comparison example 5-1 flat rubber belting.

Except not containing cellulose superfine fibre and relative to 100 matter in the rubber composition for forming inner rubber layer The rubber constituent of amount part contains beyond the nylon short fibre of 5 mass parts, comparison example 5-2 same with embodiment 5-1 flat rubber belting.

[table 5]

(test assessment method)

Collection forms the sample of the rubber composition of the inner rubber layer of embodiment 5-1~embodiment 5-6 each flat rubber belting, leads to Cross the method same with test assessment 1, obtain the avarage fiber diameter of cellulose superfine fibre, the maximum of fibre diameter and Minimum value.

Figure 20 is represented for assessing friction, the design of the belt wheel with grinding test bench 170 of wearing character.

Band grinding test bench 170 for assessment friction, wearing character possesses pulley diametersWheel is put down for 120mm driving 171st, the first driven flat wheel 172 that the pulley diameters being disposed there above are 120mm, it is arranged on the centre of their above-below direction The pulley diameters on the right side of positionFor 50mm the second driven flat wheel 173.Second driven flat wheel 173 is arranged to left and right movably, with Make it possible to bear axial load (deadweight DW), tension force is applied to flat rubber belting C.

By embodiment 5-1~embodiment 5-6 and comparative example 5-1~comparative example 5-2 each flat rubber belting C wound on for assessing Between the driven flat wheel 72,73 of wheel 171, first and second is put down in friction, the driving with grinding test bench 170 of wearing character, the Two driven flat wheels 173 bear 98N axial load to the right, apply tension force to flat rubber belting C, also, on the first driven flat wheel 172 Apply 8.8kW rotary load, under 120 DEG C of environment temperature, the flat wheel 171 of driving is rotated with 4800rpm rotating speed, operating Band.Then, shut down in operation start after 24 hours band, using the friction coefficient measuring apparatus 140 shown in Figure 17 by with The same method of test assessment 1 obtains the coefficient of friction with the inner rubber layer surface after operating.In addition, as experiment belt wheel 141, use pulley diametersFor 65mm flat wheel.

In addition, will be arranged to the duration of runs 500 hours, same experiment is carried out, and compares and will be set with the duration of runs For the situation of 24 hours, the variable quantity of coefficient of friction is calculated.

Then, the driven flat wheel 72,73 of wheel 171, first and second is put down in the driving after visual observations band operates 24 hours Operating face, surface state is assessed from sense organ, according to the adhesion amount and texture of rubber, in the following manner, to adhesive wear Occurrence index carries out numerical value judgement.

In the case of the scoriform material for being attached with the bonding erasable rubber of shape：100

In the case of powdery attachment being present：50,

In the case of attachment：0

Wherein it is difficult to which the rubber of aggregation is in powdery, have the tendency of to come off from belt surface.Even if excelling in abrasion resistance, but such as The state of fruit abrasion powder is poor, and abrasion powder is foreign matter, then value of the product is relatively low.

Figure 21 represents the design of the belt wheel with grinding test bench 180 for assessing wear resistance.

Band grinding test bench 180 for assessing wear resistance possesses pulley diametersFor 100mm driving put down wheel 181 with And the driven flat wheel 182 that pulley diameters to the left are 100mm is set.The flat wheel 181 of driving is arranged to left and right movably, to cause Axial load (deadweight DW) can be born, tension force is applied to flat rubber belting C.

For embodiment 5-1~embodiment 5-6 and comparative example 5-1~comparative example 5-2 each flat rubber belting C, in measurement band matter After amount, by its wound on the flat wheel 181 of the driving with grinding test bench 180 for assessing wear resistance and driven flat wheel 182 it Between, drive flat wheel 181 to bear 300N axial load to the right, apply tension force to flat rubber belting C, and held on driven flat wheel 182 By 12Nm rotation torque, under 100 DEG C of environment temperature, the flat wheel 181 of driving is set to be rotated with 2000rpm rotating speed, operating Band.Then, shut down in operation start after 24 hours band, measurement flat rubber belting C band quality, also, Mass lost amount is obtained, count Calculate the percentage of comparative example 5-1 Mass lost amount.

(test assessment result)

Table 5 shows experimental result.In addition, in the case of not illustrating below, the content of cellulose superfine fibre Refer to the mass parts of the rubber constituent relative to 100 mass parts.

It follows that contain in the rubber composition of the inner rubber layer of formation embodiment 5-1~embodiment 5-6 each flat rubber belting The distribution of the fibre diameter of some cellulose superfine fibres is relatively broad.

<Friction, wearing character>

- coefficient of friction-

Coefficient of friction after comparative example 5-1 band operates 24 hours is 0.85, on the other hand, embodiment 5-1 and implementation Example 5-2 is equally 0.85, left for 1 to 3 mass parts relative to the content of the cellulose superfine fibre of the rubber constituent of 100 mass parts The right side, do not change coefficient of friction.If further content (the embodiment 5-3~embodiment 5- of increase cellulose superfine fibre 6) it, then can reduce coefficient of friction, be 0.6 during 25 mass parts (embodiment 5-6).

In addition, in the case where coordinating the comparative example 5-2 of nylon short fibre of 5 mass parts, coefficient of friction 0.75, with fibre The content for tieing up plain superfine fibre is identical for the embodiment 5-4 of 10 mass parts situation.

By with operating 500 hours after coefficient of friction with band operate 24 hours after coefficient of friction compared with, in comparative example 5-1 And in comparative example 5-2, reduction by 0.35 and 0.25 is followed successively by, it is on the other hand, maximum in embodiment 5-1~embodiment 5-6 Reduce by 0.15 (embodiment 5-1 and 2-2).As can be seen here, if cellulose superfine fibre containing quantitative change it is more, reduction amount is more It is small, if containing more than 10 mass parts (embodiment 5-4~embodiment 5-6), after 24 hours and with operating 500 after band operating Coefficient of friction after hour is identical value.

It follows that forming inner rubber layer by the rubber composition containing cellulose superfine fibre, can be rubbed Wipe coefficient and change over time less flat rubber belting.

- adhesive wear occurrence index-

Comparative example 5-1 and comparative example 5-2 adhesive wear occurrence index is 100 and 90 assessed value, on the other hand, In the case of using the rubber composition containing cellulose superfine fibre, even the embodiment of content minimum (1 mass parts) 5-1, adhesive wear occurrence index are also 45, it is seen that are significantly improved.Adhesion can further be improved by increasing content Occurrence index is worn, in the embodiment 5-6 of the cellulose superfine fibre containing 25 mass parts, assessed value is 10 (belt surface Attachment is less, also, adhesiveness it is relatively low powdery it is more).

In the case of the comparative example 5-2 containing nylon short fibre, compared with comparative example 5-1, make moderate progress, but do not show Write.

It follows that forming inner rubber layer by the rubber composition containing cellulose superfine fibre, can improve flat The adhesive wear occurrence index of band.

The assessed value of comparative example 5-1 and comparative example 5-2 wear resistance is 100, on the other hand, cellulose superfine fibre Content be improved as 65 for the embodiment 5-1 of 1 mass parts, can further improve assessed value by further increasing content. Wherein, when the content of cellulose superfine fibre is in (embodiment 5-2~embodiment 5-6) in the range of 3~25 mass parts, comment Valuation is 50 or 45, the content of increase cellulose superfine fibre be present but wear resistance improvement reaches the tendency of saturation.

[embodiment 4]

(cog belt B)

Figure 22 represents the cog belt B involved by embodiment 4.

Cog belt B involved by embodiment 4 possesses the annular cog belt main body 310 formed by rubber composition.Tooth form With main body 310 have the base portion 311a of flat ribbon and in its side be inner circumferential side surface along band length direction interval with solid Multiple teeth portion 311b that constant pitch is wholely set.In cog belt main body 310, being sticked in a manner of covering the teeth portion side surface has Strengthen cloth 312 in teeth portion side.In addition, the inner circumferential side of the base portion 311a in cog belt main body 310, has to be formed on bandwidth direction The mode of the spiral of pitch is embedded with cored wire 313.Bands of the cog belt B such as being suitable as lathe involved by embodiment 4 Transmission device, the particularly duration of runs are the power transmission member of the belt driver of the lathe of annual 3~120 hours or so. For the cog belt B involved by embodiment 4, for example, with a length of 500~3000mm, with a width of 10~200mm, tape thickness is 3~ 20mm.It is highly 0.37~9.6mm for example, width is 0.63~16.46mm in addition, for teeth portion 311b, tooth pitch is 1.0~ 31.75mm。

The teeth portion 311b of cog belt main body 310 can be the trapezoidal stepped tooth of side view or semicircular Knuckle-tooth, also, can also be other shapes.Teeth portion 311b can be formed as extending or being formed as on bandwidth direction In the helical teeth upwardly extended relative to the inclined side of bandwidth direction.

Cog belt main body 310 is formed by rubber composition, and the rubber composition passes through to adding fiber in rubber constituent Cellulose family superfine fibre that the distribution of diameter includes 50~500nm simultaneously coordinates various rubber chemicals to carry out mixing to form Uncrosslinked rubber composition heating pressurize and be made using cross-linking agents.As described above, form cog belt main body 310 The distribution that rubber composition contains fibre diameter includes 50~500nm cellulose family superfine fibre, therefore, it is possible to improve Cog belt B durability.Wherein, " superfine fibre " of the application refers to the fiber that fibre diameter is less than 1.0 μm.

As the rubber constituent for the rubber composition for forming cog belt main body 310, for example, hydrogenated acrylonitrile rubber can be enumerated Glue (H-HBR), the hydrogenated acrylonitrile nitrile rubber (H-HBR) strengthened by metallic salts of unsaturated carboxylate, ethylene-propylene copolymer (EPR), the ethene-α such as ethylene-propylene-diene terpolymer (EPDM), ethylene-octene copolymer, ethylene-butene copolymer- Olefin elastomer, neoprene (CR) and CSM (CSM) etc..Form the rubber group of cog belt main body 310 The one or more kinds of mixed rubbers of the rubber constituent of compound preferably wherein.

In the H-HBR strengthened by metallic salts of unsaturated carboxylate, as unsaturated carboxylic acid, for example, methyl can be enumerated Acrylic acid, acrylic acid etc., in addition, as metal, such as zinc, calcium, magnesium, aluminium etc. can be enumerated.

Cellulose family superfine fibre is the fibrous material based on cellulose superfine fibre, and the cellulose superfine fibre will be by that will plant The framework ingredient of the fine plant cell wall for disassembling to obtain of fibres is formed.As the material plant of cellulose family superfine fibre, For example, timber, bamboo, rice (straw), potato, sugarcane (bagasse), pasture and water, marine alga etc. can be enumerated.Wherein, preferred timber.

Cellulose family superfine fibre can be cellulose superfine fibre itself or the hydrophobic chemical fibre of silicic acid anhydride Tie up plain superfine fibre.In addition, as cellulose family superfine fibre, cellulose superfine fibre itself and hydrophobic can also be used simultaneously Cellulose superfine fibre.From the aspect of dispersiveness, cellulose family superfine fibre preferably comprises the ultra-fine fibre of hydrophobic cellulose Dimension.As hydrophobic cellulose superfine fibre, can enumerate by the hydroxyl of cellulose it is some or all be replaced into it is hydrophobic The cellulose superfine fibre of group and the cellulose superfine fibre that hydrophobizing surface processing is carried out using surface conditioning agent.

For cellulose family superfine fibre, from the aspect of the durability for improving cog belt B, the preferably distribution of fibre diameter Relatively wide, the distribution of fibre diameter includes 50~500nm.Distribution lower limit for the fibre diameter, from the above considerations, It is preferred that below 20nm, more preferably below 10nm.For the upper limit, from the viewpoint of identical, preferably more than 700nm, more preferably 1 μm More than.The distribution of the fibre diameter of cellulose family superfine fibre preferably comprises 20nm~700mm, more preferably comprising 10nm~ 1μm。

The avarage fiber diameter for forming the cellulose family superfine fibre contained in the rubber composition of cog belt main body 310 is excellent More than 10nm, more preferably more than 20nm are selected, additionally, it is preferred that below 700nm, more preferably below 100nm.

After the sample Freezing smashing that the rubber composition of cog belt main body 310 will be formed, transmission electron microscope is used (TEM) its section, also, 50 cellulose family superfine fibre measurement fibre diameters of any selection are observed, based on the measurement result Obtain the distribution of fiber diameters of cellulose family superfine fibre.In addition, obtain optional 50 cellulose family superfine fibres Fibre diameter avarage fiber diameter of the average as cellulose family superfine fibre.

Cellulose family superfine fibre can be the ultra-fine fibre of cellulose family of the high aspect ratio manufactured by machinery solution method for fiber Dimension or the acicular crystals manufactured by chemistry solution method for fiber.Wherein, preferably manufactured by machinery solution method for fiber.Separately Outside, as cellulose family superfine fibre, the cellulose family superfine fibre manufactured by machinery solution method for fiber can also be used simultaneously And the cellulose family superfine fibre manufactured by chemistry solution method for fiber.As the fiber decomposition device for machinery solution method for fiber, example Such as, the kneading machines such as twin shaft kneading machine, high pressure homogenizer, grinder, sand mill etc. can be enumerated.Method for fiber is solved as chemistry Processing, for example, sour hydrolysis process etc. can be enumerated.

The content of the cellulose family superfine fibre in rubber composition for forming cog belt main body 310, from raising tooth From the aspect of durability of the shape with B, relative to the rubber constituent of 100 mass parts, preferably more than 1 mass parts, more preferably 3 mass parts More than, it is more than further preferred 5 mass parts, additionally, it is preferred that below 30 mass parts, it is further excellent more preferably below 20 mass parts Select below 10 mass parts.

As rubber chemicals, reinforcement material, processing aid can be enumerated, vulcanization accelerator additive, plasticizer, help crosslinking Agent, crosslinking agent, vulcanization accelerator, age resister etc..

As reinforcement material, in carbon black, such as can enumerate channel black, SAF, ISAF, N-339, HAF, N-351, The thermal black such as the furnace blacks such as MAF, FEF, SRF, GPF, ECF, N-234, FT, MT, acetylene carbon black etc..May be used also as reinforcement material To enumerate silica.It is more than reinforcement material preferably wherein one or two kinds of.For the content of reinforcement material, relative to rubber The rubber constituent of 100 mass parts of glue composition, such as can be 20~60 mass parts.

As plasticizer, for example, dibutyl phthalate (DBP), dioctyl phthalate (DOP) etc. can be enumerated The decanedioic acid dioxanes such as the dialkyl esters such as bialkyl ortho phthalate, dioctyl adipate (DOA), di-n-octyl sebacate (DOS) Base ester etc..It is more than plasticizer preferably wherein one or two kinds of.For the content of plasticizer, relative to the rubber of 100 mass parts Glue composition, such as can be 0.1~40 mass parts.

As assistant crosslinking agent, for example, liquid rubbers such as liquid NBR etc. can be enumerated.Preferred one kind of assistant crosslinking agent or two More than kind.Relative to the rubber constituent of 100 mass parts, such as can be 3~7 mass parts for the content of assistant crosslinking agent.

As vulcanization accelerator, for example, can enumerate thiurams (such as TETD, TT, TRA etc.), thiazoles (such as MBT, MBTS etc.), sulfinylamines (such as CZ etc.), dithiocarbamate (such as BZ-P etc.) etc..Vulcanization accelerator It is more than preferably wherein one or two kinds of.For the content of vulcanization accelerator, relative to 100 mass parts of rubber composition Rubber constituent, such as can be 2~5 mass parts.

As age resister, for example, it is anti-aging to enumerate amine ketone age resister, Diamines age resister, phenol Agent etc..It is more than age resister preferably wherein one or two kinds of.For the content of age resister, relative to 100 mass parts Rubber constituent, such as can be 0.1~5 mass parts.

In addition, the short fibre that fibre diameter is more than 10 μm can be included in the rubber composition of formation cog belt main body 310 Dimension.

Cloth 312 is strengthened in teeth portion side for example can be by by silk floss, Fypro, polyester fiber, aromatic polyamide fibre Formed Deng the cloth such as the weaving cotton cloth of formation, braid, non-woven fabrics.Cloth 312 is strengthened in teeth portion side preferably has extensibility.Strengthen teeth portion side The thickness of cloth 312 is, for example, 0.3~2.0mm.Strengthen cloth 312 to teeth portion side to implement for gluing with the bonding of cog belt main body 310 Conjunction is handled.

Twisted thread by what is formed by glass fibre, aromatic polyamide fibre, Fypro, polyester fiber etc. to form Cored wire 313.The diameter of cored wire 313 for example can be 0.5~2.5mm, the size in section between cored wire center adjacent to each other Such as can be 0.05~0.20mm.Cored wire 313 is implemented for having the adhesion process of cohesive to cog belt main body 310.

Cog belt B according to involved by the embodiment 4 of above structure, base portion 311a and teeth portion are included for being formed The distribution that the rubber composition of 311b cog belt main body 310 contains fibre diameter includes 50~500nm cellulose family Superfine fibre, therefore, excellent stiffening effect can be obtained, particularly, teeth portion 311b defect can be suppressed, in addition, can Excellent oil resistivity is obtained, as a result, higher durability can be obtained.

(cog belt B manufacture method)

The manufacture method of the cog belt B involved by embodiment 4 is illustrated based on Figure 23~Figure 26.

Figure 23 represents the band mould 320 for manufacturing the cog belt B involved by embodiment 4.

The band mould 320 is cylindrical, in its outer peripheral face, interval spaced apart in the circumferential direction with fixing tooth away from formed with The teeth portion axially extended forms groove 321.

The manufacture method of cog belt involved by embodiment 4 have material preparatory process, molding procedure, cross-linking process step with And final manufacturing procedure.

- be used for the uncrosslinked sheet rubber 311 ' of base portion and teeth portion-

Wherein, as rubber constituent cellulose family superfine fibre process for dispersing, for example, following methods can be enumerated： The dispersion (gel) for being dispersed in water cellulose family superfine fibre is put into the rubber constituent plasticated by mill, Moisture is vaporized while they are kneaded；The dispersion (gel) and rubber that cellulose family superfine fibre is dispersed in water will be made Glue latex mixes and made the masterbatch for cellulose family superfine fibre/rubber that moisture vaporizes to obtain to put into the rubber constituent plasticated In；Cellulose family superfine fibre will be made to be distributed to the dispersion liquid in solvent with mixing the solution of rubber constituent dissolving in a solvent And the masterbatch for cellulose family superfine fibre/rubber that solvent evaporation obtains is set to put into the rubber constituent plasticated；Fiber will be made Dispersion (gel) freeze-drying that plain class superfine fibre is dispersed in water is put into the rubber constituent plasticated after crushing；And The cellulose family superfine fibre of hydrophobization is put into the rubber constituent plasticated.

Then, while rubber constituent and cellulose family superfine fibre are kneaded, various rubber chemicals is put into, are continued It is kneaded.

Then, obtained uncrosslinked rubber composition is shaped to sheet by calendering formation etc., make for base portion with And the uncrosslinked sheet rubber 311 ' of teeth portion.

Strengthen cloth 312'- in-teeth portion side

Cloth 312 ' is strengthened to teeth portion side and implements adhesion process.Specifically, strengthen teeth portion side cloth 312 ' to implement to be impregnated in The RFL aqueous solution and the RFL adhesion process heated.In addition, as needed, implement to be impregnated in substrate bonding before RFL adhesion process Treatment fluid and the substrate adhesion process heated.In addition, as needed, implement to be impregnated in rubber paste and do after RFL adhesion process Dry is impregnated with rubber paste adhesion process and/or in the surface of the side of cog belt main body 310 coating rubber paste and the coating rubber of drying Paste adhesion process.

Then, the both ends that the teeth portion side for having carried out adhesion process is strengthened to cloth 312 ' are engaged so as to be formed as tubular.

- cored wire 313 '-

Adhesion process is implemented to cored wire 313 '.Specifically, cored wire 313 ' is implemented to be impregnated in resorcinol-formal Woods-latex the aqueous solution (hereinafter referred to as " the RFL aqueous solution ".) and heat RFL adhesion process.In addition, as needed, glued in RFL Before processing is closed to implement to be impregnated in the substrate adhesion process of substrate adhesion process liquid and heating and/or after RFL adhesion process implement It is impregnated in the rubber paste adhesion process of rubber paste and drying.

As shown in figure 24, with mould 320 periphery covering tubular teeth portion side strengthen cloth 312 ', in the above with Spirally winding cored wire 313 ', uncrosslinked sheet rubber 311 ' is then wound in the above.Now, the shape on band mould 320 Formed body B ' is laminated into having.In addition, uncrosslinked sheet rubber 311 ' can use in a manner of grain direction is corresponding with length direction, It can be used in a manner of grain direction corresponds to bandwidth direction.

<Cross-linking process step>

As shown in figure 25, after being wound in stacking formed body B ' periphery from mould paper 322, rubber bush is covered in the above 323, configured and closed, also, filled high-temperature, high steam into vulcanizing tank carried out in vulcanizing tank, keep as defined in into The type time.Now, the uncrosslinked sheet rubber pressing teeth portion side for being laminated formed body B ' is strengthened cloth 312 and flowed, and flows into band shaping mould The teeth portion of tool 320 forms groove 321, in addition, being crosslinked, and strengthens cloth 312 ' and the composite integrated of cored wire 313 ' with teeth portion side Change, finally, as shown in figure 26, mold the band plate S of cylindrical shape.In addition, band plate S forming temperature for example can be 100~180 DEG C, briquetting pressure for example can be 0.5~2.0MPa, and molding time for example can be 10~60 minutes.

By the inner pressure relief of vulcanizing tank, releasing is closed, and taking-up is molded between band mould 320 and rubber bush 323 Band plate S, make it from mould, its rear side ground after carrying out thickness adjustment, wheel shape is cut into defined width, manufactures cog belt B。

[embodiment 5]

(cog belt B)

The surface structure of cog belt B involved by embodiment 5 is identical with embodiment 4, therefore, enters below based on Figure 22 Row explanation.

In the cog belt B involved by embodiment 5, the base portion 311a of cog belt main body 310 rubber composition is formed Distribution containing fibre diameter includes 50~500nm cellulose family superfine fibre.On the other hand, form teeth portion 311b's Rubber composition does not contain cellulose family superfine fibre.In addition, fiber can also be contained by forming teeth portion 311b rubber composition The distribution of diameter does not include 50~500nm cellulose family superfine fibre.

Other structures are identical with embodiment 4.

Cog belt B according to involved by the embodiment 5 of above structure, the rubber composition for forming base portion 311a contain fibre The distribution of dimension diameter includes 50~500nm cellulose family superfine fibre, accordingly, it is capable to access its excellent reinforcement effect Fruit, in addition, excellent oil resistivity can be obtained, as a result, higher durability can be obtained.

(cog belt B manufacture method)

It is same with embodiment 4 in material preparatory process in the manufacture method of the cog belt B involved by embodiment 5 Sample, make cellulose family superfine fibre, not handing over for base portion that the distribution containing fibre diameter includes 50~500nm Join sheet rubber 311a '.In addition, coordinate various rubber chemicals into rubber constituent, using passing through kneader, Banbury mixer The distribution for not containing fibre diameter for being kneaded to obtain Deng kneading machine includes 50~500nm cellulose family superfine fibre not Crosslinked rubber composition make be formed as teeth portion with mould 320 formed groove 321 it is shape, for the uncrosslinked of teeth portion Rubber 311b '.

Then, in molding procedure, as shown in figure 27, band shaping mould is covered in the teeth portion side of tubular is strengthened into cloth 312' After having 320 periphery and forming the setting of groove 321 along teeth portion, as shown in figure 28, form insertion in groove 321 to each teeth portion and be used for teeth portion Uncrosslinked rubber 311b ', as shown in figure 29, in the above spirally wind cored wire 313 ', then in the above winding use In the uncrosslinked sheet rubber 311a ' of base portion, type body B ' is laminated into so as to be formed.In cross-linking process step, carry out being laminated formed body B ' The uncrosslinked rubber 311b ' for teeth portion and the uncrosslinked sheet rubber 311a ' for base portion crosslinking, also, make them Strengthen cloth 312 ' and the composite integrated of cored wire 313 ' with teeth portion side, finally, the shaping cylinder same with Figure 26 of embodiment 4 The band plate S of shape.

Other method is identical with embodiment 4.

[embodiment 6]

(cog belt B)

The surface structure of cog belt B involved by embodiment 6 is identical with embodiment 4, therefore, enters below based on Figure 22 Row explanation.

In the cog belt B involved by embodiment 6, the teeth portion 311b of cog belt main body 310 rubber composition is formed Distribution containing fibre diameter includes 50~500nm cellulose family superfine fibre.On the other hand, form base portion 311a's Rubber composition does not contain cellulose family superfine fibre.In addition, fiber can also be contained by forming base portion 311a rubber composition The distribution of diameter does not include 50~500nm cellulose family superfine fibre.

Other structures are identical with embodiment 4.

Cog belt B according to involved by the embodiment 6 of above structure, the rubber composition for forming teeth portion 311b contain fibre The distribution of dimension diameter includes 50~500nm cellulose family superfine fibre, accordingly, it is capable to access its excellent reinforcement effect Fruit, particularly, teeth portion 311b defect can be suppressed, in addition, excellent oil resistivity can be obtained, as a result, can obtain compared with High durability.

(cog belt B manufacture method)

It is same with embodiment 4 in material preparatory process in the manufacture method of the cog belt B involved by embodiment 6 Sample, cellulose family superfine fibre of the distribution containing fibre diameter comprising 50~500nm is used for the uncrosslinked of teeth portion Rubber composition is kneaded, and is made into and is formed as teeth portion with mould 320 and forms the shape of groove 321 being used for teeth portion not It is crosslinked rubber 311b '.In addition, coordinating various rubber chemicals into rubber constituent, kneader, Banbury mixer etc. will be passed through The uncrosslinked rubber composition that what kneading machine was kneaded to obtain do not contain cellulose family superfine fibre is shaped to by calendering formation etc. Sheet, make the uncrosslinked sheet rubber 311a ' for base portion.

Then, it is same with Figure 27 of embodiment 5 in molding procedure, covered the teeth portion side of tubular is strengthened into cloth 312' Cover the periphery with mould 320 and along teeth portion formed groove 321 set after, it is same with Figure 28, to each teeth portion formed groove 321 Middle insertion is used for the uncrosslinked rubber 311b ' of teeth portion, same with Figure 29, spirally winds cored wire 313 ' in the above, then, The uncrosslinked sheet rubber 311a ' for base portion is wound in the above, and type body B ' is laminated into so as to be formed.In cross-linking process step, enter Row stacking formed body B ' the uncrosslinked rubber 311b ' for teeth portion and the uncrosslinked sheet rubber 311a ' for base portion friendship Connection, also, them is strengthened cloth 312 ' and the composite integrated of cored wire 313 ' with teeth portion side, finally, shaping and embodiment 4 Cylindric band plate S same Figure 26.

Other method is identical with embodiment 4.

[embodiment 7]

(cog belt B)

The surface structure of cog belt B involved by embodiment 7 is identical with embodiment 4, therefore, enters below based on Figure 22 Row explanation.

In the cog belt B involved by embodiment 7, strengthen teeth portion side cloth 312 and implement to be impregnated in the RFL aqueous solution and add The RFL adhesion process of heat.Thus, as shown in figure 30, reinforcement cloth 312 in teeth portion side glues via the RFL formed by RFL adhesion process Layer 314 is closed to bond with cog belt main body 310.In addition, before RFL adhesion process, implementation is impregnated in substrate adhesion process liquid and added The substrate adhesion process of heat, the substrate adhesion process liquid is by by bases such as epoxy resin, isocyanate resins (blocked isocyanate) Solution that bottom adhesion process agent is dissolved in toluene equal solvent or the dispersion liquid being dispersed in water are formed, and are preferably bonded in RFL Layer 314 is arranged with substrate adhesive layer.Furthermore it is possible to after RFL adhesion process, implement to be impregnated in the impregnation of rubber paste and drying Rubber paste adhesion process and it is coated with the coating rubber paste adhesion process of rubber paste and drying on the surface of the side of cog belt main body 310 In one or two kinds of rubber paste adhesion process, on RFL adhesive layers 314 set rubber paste adhesive layer.

RFL adhesive layers 314 are formed by the solid constituent included in the RFL aqueous solution, include resorcinol-formaline resin (RF resins) and the rubber constituent from rubber latex.In addition, distribution of the RFL adhesive layers 314 containing fibre diameter Cellulose family superfine fibre comprising 50~500nm.The cellulose family superfine fibre included in RFL adhesive layers 314 and embodiment party The cellulose family superfine fibre included in the cog belt main body 310 of formula 4 is same structure.As described above, RFL adhesive layers 314 contain The distribution for having fibre diameter includes 50~500nm cellulose family superfine fibre, accordingly, it is capable to which accessing teeth portion side strengthens cloth The relatively high adhesion of 312 pairs of cog belt main bodys 310.

In RFL adhesive layers 314, cellulose family superfine fibre is not orientated in a certain direction, i.e., it is random to take To.

For the content of the cellulose family superfine fibre of RFL adhesive layers 314, strengthen cloth 312 to cog belt master from teeth portion side It is further excellent more preferably more than 1.0 mass % preferably more than 0.5 mass % from the aspect of body 310 has higher cohesive Select more than 2.0 mass %, additionally, it is preferred that below 12 mass %, more preferably below 10 mass %, further preferred 8 mass % with Under.

For the content of the cellulose family superfine fibre of the rubber constituent relative to 100 mass parts of RFL adhesive layers 314, From the aspect of from teeth portion side, reinforcement cloth 312 has higher cohesive to cog belt main body 310, preferably more than 1 mass parts, more It is preferred that more than 3 mass parts, it is more than further preferred 5 mass parts, additionally, it is preferred that below 30 mass parts, more preferably 20 mass parts with Under, below further preferred 10 mass parts.

Furthermore it is preferred that the chopped fiber that fibre diameter is more than 10 μm is not included in RFL adhesive layers 314, still, in not shadow Ring teeth portion side and strengthen cloth 312 to above-mentioned chopped fiber can be included in the range of the cohesive of cog belt main body 310.

In addition, formed cog belt main body 310 base portion 311a rubber composition in, can with embodiment 4 and Embodiment 5 equally includes cellulose family superfine fibre, can also not include cellulose family superfine fibre.Forming cog belt master In the teeth portion 311b of body 310 rubber composition, it can equally surpass with embodiment 4 and embodiment 6 comprising cellulose family Fine fibre, cellulose family superfine fibre can also not included.

Other structures are identical with embodiment 4.

Cog belt B according to involved by the embodiment 7 of above structure, it is arranged on teeth portion side and strengthens cloth 312 and cog belt Distribution of the RFL adhesive layers 314 containing fibre diameter between main body 310 includes the 50~500nm ultra-fine fibre of cellulose family Dimension, accordingly, it is capable to which accessing teeth portion side strengthens cloth 312 to the higher bonding force of cog belt main body 310, it is excellent that its can be obtained Stiffening effect, particularly, teeth portion 311b defect can be suppressed, as a result, higher durability can be obtained.

(cog belt B manufacture method)

In the manufacture method of the cog belt B involved by embodiment 7, in material preparatory process, add making teeth portion side During strong cloth 312 ', cloth 312 ' is strengthened to teeth portion side and implements adhesion process.Specifically, cloth 312 ' is strengthened to teeth portion side and implements dipping In the RFL aqueous solution and the RFL adhesion process of heating.Additionally, it is preferred that implement to be impregnated in substrate adhesion process before RFL adhesion process Liquid and the substrate adhesion process heated.Furthermore, it is possible to implement to be impregnated in the impregnation rubber of rubber paste and drying after RFL adhesion process Adhesive paste adhesion process and in the coating rubber paste adhesion process that the surface of the side of cog belt main body 310 is coated with rubber paste and drying One or two kinds of rubber paste adhesion process.

《Substrate adhesion process》

Substrate adhesion process liquid is, for example, by substrate bonding places such as epoxy resin, isocyanate resins (blocked isocyanate) Manage the agent solution being dissolved in toluene equal solvent or the dispersion liquid being dispersed in water.The fluid temperature example of substrate adhesion process liquid It such as can be 20~30 DEG C.The solid component concentration of substrate adhesion process liquid is preferably below 20 mass %.

Dip time in substrate adhesion process liquid for example can be 1~3 second.After being impregnated in substrate adhesion process liquid Heating-up temperature (furnace temperature) is, for example, 200~250 DEG C.Heat time (residing time in furnace) for example can be 1~3 minute.Base The number of bottom adhesion process can be once or more than twice.Strengthen attachment base bottom bonding on cloth 312' in teeth portion side Inorganic agent, still, on the basis of the quality for the fibrous material that its adhesion amount (coating weight) strengthens cloth 312 ' to form teeth portion side, such as Can be 0.5~8 mass %.

《RFL adhesion process》

The RFL aqueous solution is to be mixed with rubber latex in the initial condensation thing of resorcinol and formaldehyde and cellulose family surpasses Fine fibre is scattered in the aqueous solution of the dispersion (gel) of water.The fluid temperature of the RFL aqueous solution for example can be 20~30 DEG C.

The molar ratio of resorcinol (R) and formalin (F) such as can be R/F=1/1~1/2.As rubber latex, For example, vinylpyridine-SBR styrene butadiene rubberses latex (Vp-St-SBR), Neoprene latex (CR), chlorine sulphur can be enumerated Change polyethylene rubber latex (CSM) etc..The solid constituent of the initial condensation thing (RF) of resorcinol and formaldehyde and rubber latex (L) Mass ratio such as can be RF/L=1/5~1/20.

The solid component concentration of the RFL aqueous solution is preferably more than 6.0 mass %, more preferably more than 9.0 mass %, in addition, excellent Select below 20 mass %, more preferably below 15 mass %.

Dip time in the RFL aqueous solution for example can be 1~3 second.The heating-up temperature being impregnated in after the RFL aqueous solution (furnace temperature) for example can be 100~180.Heat time (residing time in furnace) for example can be 1~5 minute.RFL bonding places The number of reason can be once or more than twice.Teeth portion side is strengthened adhering to RFL adhesive layers 314 on cloth 312', still, On the basis of the quality for the fibrous material that its adhesion amount (coating weight) strengthens cloth 312 ' to form teeth portion side, such as can be 2~5 matter Measure %.

Other method is identical with embodiment 4.

[embodiment 8]

The surface structure of cog belt B involved by embodiment 8 is identical with embodiment 4, therefore, enters below based on Figure 22 Row explanation.

In the cog belt B involved by embodiment 8, strengthen teeth portion side cloth 312 and implement to be impregnated in the RFL aqueous solution and add The RFL adhesion process of heat, the impregnation rubber paste adhesion process for being impregnated in rubber paste and drying and in the side of cog belt main body 310 Surface is coated with one or two kinds of rubber paste adhesion process in the coating rubber paste adhesion process of rubber paste and drying.Thus, As shown in figure 31, teeth portion side strengthens cloth 312 and via the RFL adhesive layers 314 formed by RFL adhesion process and passes through rubber paste The rubber paste adhesive layer 315 that adhesion process is formed bonds with cog belt main body 310.Furthermore it is preferred that implement before RFL adhesion process Substrate adhesion process liquid and the substrate adhesion process heated are impregnated in, in 314 times setting substrate adhesive layers of RFL adhesive layers, wherein, The substrate adhesion process liquid is by the substrate adhesion process agent such as epoxy resin, isocyanate resin (blocked isocyanate) are dissolved into Solution in toluene equal solvent or the decomposed solution being distributed in water are formed.

RFL adhesive layers 314 are with embodiment 4 it is also possible to which the distribution containing fibre diameter includes 50~500nm's Cellulose family superfine fibre, cellulose family superfine fibre can also not contained.

Rubber paste adhesive layer 315 is formed by the rubber composition of the solid constituent included in rubber paste, also, for being formed The rubber composition of rubber paste adhesive layer 315 by rubber constituent add fibre diameter distribution include 50~ 500nm cellulose family superfine fibre and the uncrosslinked rubber composition heating pressurization for coordinating various rubber chemicals to be kneaded And it is made using cross-linking agents.As described above, distribution of the rubber paste adhesive layer 315 containing fibre diameter include 50~ 500nm cellulose family superfine fibre, the height of cog belt main body 310 is bonded accordingly, it is capable to access teeth portion side and strengthen cloth 312 Power.

As the rubber constituent for the rubber composition for forming rubber paste adhesive layer 315, for example, hydrogenated acrylonitrile can be enumerated Rubber (H-HBR), metallic salts of unsaturated carboxylate strengthen hydrogenated acrylonitrile nitrile rubber (H-HBR), ethylene-propylene copolymer (EPR), The ethene-alpha-olefin bullets such as ethylene-propylene-diene terpolymer (EPDM), ethylene-octene copolymer, ethylene-butene copolymer Property body, neoprene (CR) and CSM (CSM) etc..Form the rubber composition of cog belt main body 310 The one or more kinds of mixed rubbers of rubber constituent preferably wherein.Form the rubber composition of rubber paste adhesive layer 315 Rubber constituent can be identical with the rubber constituent for the rubber composition for forming cog belt main body 310, can also be different.

The cellulose family superfine fibre included and embodiment 4 are formed in the rubber composition of rubber paste adhesive layer 315 The structure of the cellulose family superfine fibre included in cog belt main body 310 is identical.In rubber paste adhesive layer 315, cellulose family Superfine fibre is not oriented to specific direction, is disordered orientation.

For the content of the cellulose family superfine fibre in rubber paste adhesive layer 315, strengthen cloth 312 to tooth form from teeth portion side From the aspect of there is higher cohesive with main body 310, relative to the rubber constituent of 100 mass parts, preferably more than 1 mass parts, More preferably more than 3 mass parts, it is more than further preferred 5 mass parts, additionally, it is preferred that below 30 mass parts, more preferably 20 mass parts Hereinafter, below further preferred 10 mass parts.

As rubber chemicals, reinforcement material can be enumerated, coefficient of friction reduces material, crosslinking agent, age resister etc..

As reinforcement material, in carbon black, such as can enumerate channel black, SAF, ISAF, N-339, HAF, N-351, The thermal black such as the furnace blacks such as MAF, FEF, SRF, GPF, ECF, N-234, FT, MT, acetylene carbon black etc..May be used also as reinforcement material To enumerate silica.It is more than reinforcement material preferably wherein one or two kinds of.For the content of reinforcement material, preferably than with It is few in the content of the reinforcement material for the rubber composition for forming cog belt main body 310, relative to 100 mass parts of rubber composition Rubber constituent, such as can be 10~30 mass parts.

Material is reduced as coefficient of friction, for example, polyvinyl resin with super-high molecular weight powder, fluororesin powder, molybdenum can be enumerated Deng.Coefficient of friction reduces more than material preferably wherein one or two kinds of.The content of material is reduced for coefficient of friction, relatively In the rubber constituent of 100 mass parts of rubber composition, such as can be 5~15 mass parts.

As crosslinking agent, sulphur and organic peroxide can be enumerated.As crosslinking agent, sulphur can be coordinated, can also be matched somebody with somebody Organic peroxide is closed, can also both uses simultaneously.For the use level of crosslinking agent, in the case of sulphur, relative to rubber The rubber constituent of 100 mass parts of glue composition, such as can be 0.3~5 mass parts, in the case of organic peroxide, Relative to the rubber constituent of 100 mass parts of rubber composition, such as can be 0.3~5 mass parts.

As age resister, for example, it is anti-aging to enumerate amine ketone age resister, Diamines age resister, phenol Agent etc..It is more than age resister preferably wherein one or two kinds of.For the content of age resister, relative to 100 mass parts Rubber constituent, such as can be 1~3 mass parts.

It it is more than 10 μm preferably not comprising fibre diameter in addition, in the rubber composition for forming rubber paste adhesive layer 315 Chopped fiber, still, do not influence teeth portion side strengthen cloth 312 to the cohesive of cog belt main body 310 in the range of can include Above-mentioned chopped fiber.

Cog belt B according to involved by the embodiment 8 of above structure, it is arranged on teeth portion side and strengthens cloth 312 and cog belt The cellulose family that distribution of the rubber paste adhesive layer 315 containing fibre diameter between main body 310 includes 50~500nm is ultra-fine Fiber, accordingly, it is capable to which accessing teeth portion side strengthens the bonding force higher to cog belt main body 310 of cloth 312, accordingly, it is capable to access it Excellent stiffening effect, it can particularly suppress teeth portion 311b defect, in addition, excellent oil resistivity can be obtained.Also, rubber Distribution of the adhesive paste adhesive layer 315 containing fibre diameter includes 50~500nm cellulose family superfine fibre, therefore, it is possible to Make teeth portion side surface that there is higher wear resistance.As a result, higher durability can be obtained.

(cog belt B manufacture method)

In the manufacture method of the cog belt B involved by embodiment 8, in material preparatory process, add making teeth portion side During strong cloth 312 ', cloth 312 ' is strengthened to teeth portion side and implements adhesion process.Specifically, cloth 312 ' is strengthened to teeth portion side and implements dipping In the RFL aqueous solution and the RFL adhesion process of heating, also, implement to be impregnated in the impregnation rubber paste bonding place of rubber paste and drying Reason and the one kind being coated with the surface of the side of cog belt main body 310 in the coating rubber paste adhesion process of rubber paste and drying or Two kinds of rubber paste adhesion process.Furthermore it is preferred that implement what is be impregnated in substrate adhesion process liquid and heat before RFL adhesion process Substrate adhesion process.

Substrate adhesion process is identical with embodiment 7.

《RFL adhesion process》

The RFL aqueous solution is the aqueous solution that rubber latex is mixed with the initial condensation thing of resorcinol and formaldehyde.In addition, , can be same with embodiment 7 in the case of including cellulose family superfine fibre in RFL adhesive layers 314, in the RFL aqueous solution In comprising making cellulose family superfine fibre be scattered in the dispersion (gel) of water.The fluid temperature of the RFL aqueous solution for example can be 20~30 DEG C.The solid component concentration of the RFL aqueous solution is preferably below 30 mass %.

The molar ratio of resorcinol (R) and formalin (F) R/F=1/1~1/2 in this way.As rubber latex, such as Vinylpyridine-SBR styrene butadiene rubberses latex (Vp-St-SBR), Neoprene latex (CR), the poly- second of chlorosulfonation can be enumerated Alkene rubber latex (CSM) etc..The solid constituent mass ratio of the initial condensation thing (RF) of resorcinol and formaldehyde and rubber latex (L) E.g. RF/L=1/5~1/20.

Dip time in the RFL aqueous solution for example can be 1~3 second.It is impregnated in the heating-up temperature (stove after the RFL aqueous solution Temperature) for example can be 100~180 DEG C.Heat time (residing time in furnace) for example can be 1~5 minute.RFL bonding places The number of reason can be once or more than twice.Teeth portion side is strengthened adhering to RFL adhesive layers 314 on cloth 312', still, On the basis of the quality for the fibrous material that its adhesion amount (coating weight) strengthens cloth 312 ' to form teeth portion side, such as can be 2~5 matter Measure %.

《Rubber paste adhesion process》

Rubber paste is will to exist for the rubber composition containing cellulose family superfine fibre for forming rubber paste adhesive layer 315 Uncrosslinked rubber composition before crosslinking is dissolved in the solution in toluene equal solvent.Rubber paste is made by following manner.

Wherein, as disperseing the process for dispersing of cellulose family superfine fibre to rubber constituent, such as following sides can be enumerated Method：The dispersion (gel) that cellulose family superfine fibre is dispersed in water will be made to put into the rubber constituent plasticated by mill In, vaporize moisture while they are kneaded；The dispersion (gel) that cellulose family superfine fibre will be dispersed in water Mix and make with rubber latex the masterbatch for cellulose family superfine fibre/rubber that moisture vaporizes to obtain put into the rubber plasticated into In point；The dispersion that the cellulose family superfine fibre for making hydrophobization is distributed in solvent is with making rubber constituent be dissolved into solvent Solution mix and make the masterbatch of cellulose family superfine fibre/rubber that solvent evaporation obtains to put into the rubber constituent plasticated In；By make cellulose family superfine fibre be scattered in water dispersion (gel) freeze-drying crush after put into the rubber plasticated into In point；And the cellulose family superfine fibre of hydrophobization is put into the rubber constituent plasticated.

Then, while rubber constituent and cellulose family superfine fibre are kneaded, various rubber chemicals is put into, are continued It is kneaded, makes uncrosslinked rubber composition.

Then, the uncrosslinked rubber composition is put into solvent, be stirred up to forming uniform solution, so as to Make rubber paste.The fluid temperature of rubber paste for example can be 20~30 DEG C.

For the solid component concentration of rubber paste, for being impregnated with rubber paste adhesion process, preferably more than 5 mass %, More preferably more than 10 mass %, additionally, it is preferred that below 30 mass %, more preferably below 20 mass %.For being coated with rubber paste In adhesion process, preferably more than 10 mass %, more preferably more than 20 mass %, additionally, it is preferred that below 50 mass %, more preferably 40 Below quality %.

In the case where being impregnated with rubber paste adhesion process, the dip time in rubber paste for example can be 1~3 second.Dipping Drying temperature (furnace temperature) after rubber paste for example can be 50~100 DEG C.Drying time (residing time in furnace) for example may be used To be 1~3 minute.The number of impregnation rubber paste adhesion process can be once or more than twice.Strengthen in teeth portion side Adhere to rubber paste adhesive layer 315 on cloth 312 ', still, its adhesion amount (coating weight) is to form the fiber that cloth 312 ' is strengthened in teeth portion side On the basis of the quality of material, such as can be 2~5 mass %.

In the case where being coated with rubber paste adhesion process, the drying temperature (furnace temperature) after coating for example can be 50~ 100℃.Drying time (residing time in furnace) for example can be 1~3 minute.Being coated with the number of rubber paste adhesion process can be Once or more than twice.Strengthen adhering to rubber paste adhesive layer 315, still, its adhesion amount on cloth 312' in teeth portion side On the basis of the quality for the fibrous material that (coating weight) strengthens cloth 312 ' to form teeth portion side.Such as can be 2~5 mass %.

Other method is identical with embodiment 4.

- embodiment-

(uncrosslinked rubber composition)

Make the rubber 1~7 of the following uncrosslinked rubber composition for forming cog belt main body and for teeth portion Strengthen the rubber 8~14 of the uncrosslinked rubber composition of the rubber paste adhesive layer of cloth in side.Table 6 and table 7 show various cooperation feelings Condition.

First, it is modulated in toluene and is dispersed with cellulose powder (Nippon Paper company production trade name：KCflock W- GK dispersion liquid), using high pressure homogenizer, the dispersion is made to impinge upon one another, it is the ultra-fine fibre of cellulose to make cellulose powder solution fibre Dimension, obtain being dispersed with the dispersion of cellulose superfine fibre in toluene.Thus, cellulose is manufactured by machinery solution method for fiber to surpass Fine fibre, in addition, not carrying out silicic acid anhydride.

Then, by the dispersion that cellulose superfine fibre is dispersed with toluene with being dissolved with H-HBR (days in toluene This ZEON companies produce trade name：Zetpol 2020) and (DIC companies produce trade name added with plasticizer：W-260) molten Liquid coordinates, and vaporizes toluene and plasticizer, makes cellulose superfine fibre/H-HBR masterbatch.In addition, for each in masterbatch The content of composition, cellulose family superfine fibre are 25 mass %, and plasticizer is that 25 mass %, H-HBR are 50 mass %.

Then, H-HBR is plasticated, also, input masterbatch is kneaded thereto.The mixing quality of H-HBR and masterbatch ratio For 98：4, in the case where H-HBR total amounts are 100 mass parts, the content of cellulose superfine fibre for 1 mass parts.

Then, by H-HBR, cellulose superfine fibre and plasticizer be kneaded, also, put into respectively thereto relative to (East Sea Tan Su companies produce trade name to the FEF carbon blacks as reinforcement material of the H-HBR of 100 mass parts 40 mass parts： SEAST SO), 1 mass parts as processing aid stearic acid (You companies produce trade name：Stearic acid Chinese toon), 5 mass parts As vulcanization accelerator additive zinc oxide (chemical industrial company of boundary produce trade name：Two kinds of zinc oxide), the increasing of 24 mass parts Mould agent, (Japanese ZEON companies produce trade name to the liquid NBR as assistant crosslinking agent of 5 mass parts：Nipol 1312), 0.5 matter Measure sulphur (the Japanese destructive distillation industrial group production trade name as crosslinking agent of part：OilSulfur), the thiurams of 2 mass parts Vulcanization accelerator (the emerging chemical company's production trade name of imperial palace：Nocseller TET-G) and the amine ketone of 2 mass parts it is anti-ageing Agent (the emerging Co., Ltd.'s production trade name of imperial palace：Nocrac224), continue to be kneaded, make uncrosslinked rubber composition.Should Uncrosslinked rubber composition is as rubber 1.It is containing in masterbatch and below in addition, for the content of the plasticizer in rubber 1 The total amount of addition is 25 mass parts relative to the HNBR of 100 mass parts.

, will be with addition to the content of cellulose superfine fibre is arranged into 3 mass parts relative to H-HBR100 mass parts The uncrosslinked rubber composition that rubber 1 equally makes is as rubber 2.

, will be with addition to the content of cellulose superfine fibre is arranged into 5 mass parts relative to H-HBR100 mass parts The uncrosslinked rubber composition that rubber 1 equally makes is as rubber 3.

, will be with addition to the content of cellulose superfine fibre is arranged into 10 mass parts relative to H-HBR100 mass parts The uncrosslinked rubber composition that rubber 1 equally makes is as rubber 4.

, will be with addition to the content of cellulose superfine fibre is arranged into 15 mass parts relative to H-HBR100 mass parts The uncrosslinked rubber composition that rubber 1 equally makes is as rubber 5.

, will be with addition to the content of cellulose superfine fibre is arranged into 25 mass parts relative to H-HBR100 mass parts The uncrosslinked rubber composition that rubber 1 equally makes is as rubber 6.

Plasticate H-HBR, also, the conduct for putting into 40 mass parts of the H-HBR relative to 100 mass parts respectively thereto adds The oxidation as vulcanization accelerator additive of the FEF carbon blacks of strong material, the stearic acid, 5 mass parts as processing aid of 1 mass parts Zinc, the plasticizer of 10 mass parts, 5 mass parts as the liquid NBR of assistant crosslinking agent, 0.5 mass parts as crosslinking agent sulphur, The thiurams vulcanization accelerator of 2 mass parts and the amine ketone age resister of 2 mass parts, are kneaded, make uncrosslinked rubber Glue composition.Using the uncrosslinked rubber composition as rubber 7.Thus, rubber 7 does not include cellulose superfine fibre.

[table 6]

By methacrylic acid iron fortified H-HBR, (Japanese ZEON companies produce trade name：Zeoforte ZSC 2295) and (Japanese ZEON companies produce trade name to H-HBR：Zetpole 2020) in the past the latter mixing quality ratio be 50: 50 mode enter Row plasticates, also, put into respectively thereto 20 mass parts of the rubber constituent relative to 100 mass parts as reinforcement material (East Sea Tan Su companies produce trade name to FEF carbon blacks：SEAST SO), 10 mass parts as coefficient of friction reduce material superelevation (Mitsui Chemicals, Inc. produces trade name to molecular weight polyethylene powder：MipelonXM-220), the conduct crosslinking agent of 0.5 mass parts Sulphur (Japanese destructive distillation industrial group produces trade name：OilSulfur), (imperial palace is emerging for 2 mass parts thiurams vulcanization accelerators Chemical company produces trade name：Nocseller TET-G) and 2 mass parts (the emerging strain formula meeting of imperial palace of amine ketone age resister Society produces trade name：Nocrac224), it is kneaded, makes uncrosslinked rubber composition.The uncrosslinked rubber composition is made For rubber 8.Thus, rubber 8 does not include cellulose superfine fibre.

Methacrylic acid iron fortified H-HBR and H-HBR are plasticated, also, input masterbatch is kneaded thereto.Methyl It is 50: 48: 4 that zinc acrylate resin, which strengthens H-HBR, H-HBR and the mixing quality ratio of masterbatch, is 100 mass parts in H-HBR total amounts In the case of, the content of cellulose superfine fibre is 1 mass parts.

Then, methacrylic acid iron fortified H-HBR, H-HBR, cellulose superfine fibre and plasticizer are kneaded, also, Put into 20 matter of the rubber constituent of methacrylic acid the iron fortified H-HBR and H-HBR relative to 100 mass parts respectively thereto The conduct as the FEF carbon blacks of reinforcement material, the ultra-high molecular weight polyethylene powder of 10 mass parts, 0.5 mass parts for measuring part is handed over Join sulphur, the thiurams vulcanization accelerator of 2 mass parts and the amine ketone age resister of 2 mass parts of agent, be kneaded, made Uncrosslinked rubber composition.Using the uncrosslinked rubber composition as rubber 9.

In addition to the content of cellulose superfine fibre is arranged into 3 mass parts relative to the rubber constituent of 100 mass parts, Uncrosslinked rubber composition is equally made with rubber 9, as rubber 10.

In addition to the content of cellulose superfine fibre is arranged into 5 mass parts relative to the rubber constituent of 100 mass parts, Uncrosslinked rubber composition is equally made with rubber 9, as rubber 11.

Except by the content of cellulose superfine fibre relative to the rubber constituent of 100 mass parts be arranged to 10 mass parts with Outside, uncrosslinked rubber composition is equally made with rubber 9, as rubber 12.

Except by the content of cellulose superfine fibre relative to the rubber constituent of 100 mass parts be arranged to 15 mass parts with Outside, uncrosslinked rubber composition is equally made with rubber 9, as rubber 13.

Except by the content of cellulose superfine fibre relative to the rubber constituent of 100 mass parts be arranged to 25 mass parts with Outside, uncrosslinked rubber composition is equally made with rubber 9, as rubber 14.

[table 7]

(cog belt for being used for experimental evaluation)

The cog belt for experimental evaluation of making example 6 below -1~embodiment 6-13 and comparative example 6 be (teeth portion Tooth pitch is 8mm, with a width of 10mm).Respective structure is respectively illustrated in table 8.

In embodiment 6-1 cog belt, as the uncrosslinked rubber composition for forming cog belt main body, using containing fibre Tie up the rubber 1 of plain superfine fibre.

As teeth portion side strengthen cloth, using will on polyurethane line wind aromatic polyamide fibre (Di Ren companies manufacturer The name of an article：Technora the wrap yarn for) giving retractility is twisted thread weaving cotton cloth as warp as parallel, using nylon.To the teeth portion Side strengthen cloth weave cotton cloth implement as substrate adhesion process be impregnated in the substrate adhesion process that is heated after epoxy resin solution with And it is impregnated in the RFL adhesion process heated after the RFL aqueous solution.In addition, cloth is strengthened to the teeth portion side for implementing RFL adhesion process Repetition of weaving cotton cloth is implemented to be impregnated in the impregnation rubber paste adhesion process of rubber paste and drying twice.As rubber paste, use will be free of Rubber paste that the rubber 8 for having cellulose superfine fibre is dissolved in toluene solvant, that solid component concentration is 10 mass %.Rubber paste Fluid temperature be 25 DEG C.The dip time of rubber paste is 5 seconds.Drying temperature after rubber paste dipping is 100 DEG C, drying time It is 40 seconds.

As cored wire, glass fibre coremaking line is used.

As the uncrosslinked rubber composition for forming cog belt main body, except using the rubber containing cellulose superfine fibre Beyond 2, the cog belt for making embodiment 6-2 same with embodiment 6-1.

As the uncrosslinked rubber composition for forming cog belt main body, except using the rubber containing cellulose superfine fibre Beyond 3, the cog belt for making embodiment 6-3 same with embodiment 6-1.

As the uncrosslinked rubber composition for forming cog belt main body, except using the rubber containing cellulose superfine fibre Beyond 4, the cog belt for making embodiment 6-4 same with embodiment 6-1.

Except using the rubber 9 containing cellulose superfine fibre in the impregnation rubber paste adhesion process of teeth portion side reinforcement cloth Rubber paste beyond, the cog belt for making embodiment 6-5 same with embodiment 6-4.

Except using the rubber containing cellulose superfine fibre in the impregnation rubber paste adhesion process of teeth portion side reinforcement cloth Beyond 10 rubber paste, the cog belt for making embodiment 6-6 same with embodiment 6-4.

Except using the rubber containing cellulose superfine fibre in the impregnation rubber paste adhesion process of teeth portion side reinforcement cloth Beyond 11 rubber paste, the cog belt for making embodiment 6-7 same with embodiment 6-4.

Except using the rubber containing cellulose superfine fibre in the impregnation rubber paste adhesion process of teeth portion side reinforcement cloth Beyond 12 rubber paste, the cog belt for making embodiment 6-8 same with embodiment 6-4.

Except using the rubber containing cellulose superfine fibre in the impregnation rubber paste adhesion process of teeth portion side reinforcement cloth Beyond 13 rubber paste, the cog belt for making embodiment 6-9 same with embodiment 6-4.

Except using the rubber containing cellulose superfine fibre in the impregnation rubber paste adhesion process of teeth portion side reinforcement cloth Beyond 14 rubber paste, the cog belt for making embodiment 6-10 same with embodiment 6-4.

As the uncrosslinked rubber composition for forming cog belt main body, except using the rubber containing cellulose superfine fibre Beyond 5, the cog belt for making embodiment 6-11 same with embodiment 6-1.

As the uncrosslinked rubber composition for forming cog belt main body, except using the rubber containing cellulose superfine fibre Beyond 6, the cog belt for making embodiment 6-12 same with embodiment 6-1.

As the uncrosslinked rubber composition for forming cog belt main body, except using the rubber for not containing cellulose superfine fibre Glue 7 and the rubber that the rubber 12 containing cellulose superfine fibre is used in the impregnation rubber paste adhesion process of teeth portion side reinforcement cloth Beyond adhesive paste, the cog belt for making embodiment 6-13 same with embodiment 6-1.

As the uncrosslinked rubber composition for forming cog belt main body, except using the rubber for not containing cellulose superfine fibre Glue 7 and teeth portion side strengthen cloth impregnation rubber paste adhesion process in use the rubber 8 for not containing cellulose superfine fibre Beyond rubber paste, the cog belt of comparison example 6 same with embodiment 6-1.

[table 8]

(test assessment method)

Crosslinking is gathered from the cog belt main body of embodiment 6-1~embodiment 6-13 cog belt and rubber paste adhesive layer The sample of the rubber composition of rubber 1~6 and rubber 9~14, after the sample Freezing smashing of these rubber compositions, pass through Scanning electron microscope (SEM) observes its section, also, arbitrarily 50 fiber measurement fibre diameters of selection, and it is average to obtain it Number is used as avarage fiber diameter.In addition, obtain the maximum and minimum value of the fibre diameter in 50 cellulose superfine fibres.

Figure 32 represents the belt wheel design with grinding test bench 330.

The band grinding test bench 330 has driving pulley 331, driven pulley 332 and guide wheel 333.Driving pulley 331 exists Belt wheel periphery is provided with 21 teeth portion occlusal cribs.Driven pulley 332 is provided with 42 teeth portion occlusal cribs in belt wheel periphery.Guide wheel 333 make belt wheel periphery be formed as plane due to the pressing belt back side.Driving pulley 331, driven pulley 332 and guide wheel 333 are equal Made for carbon steel (S45C).

The band grinding test bench 330 is used to each cog belt B of embodiment 6-1~embodiment 6-13 and comparative example 6, led to Cross following manner and assess teeth portion fracture resistance and wear resistance.

- assessment of teeth portion fracture resistance-

First, cog belt B quality is measured.Then, cog belt B, driven pulley are wound on band grinding test bench 330 332 rearward bear load, apply 216N tension force to cog belt B.Then, the side using the tension force that cog belt B is born as 550N Formula makes driving pulley 331 be rotated with 3000rpm rotating speed, operates band, using until occurs for teeth portion as tooth the duration of runs of defect Portion's endurance life.The band field investigation of embodiment 6-1~embodiment 6-13 and comparative example 6 is carried out under room temperature environment, also, The band operating of embodiment 6-1~embodiment 6-4, embodiment 6-11, embodiment 6-12 and comparative example 6 is carried out under 80 DEG C of environment Experiment.

- wear resistance assessment-

Operated making cog belt B carry out 300 hours bands under the same conditions with the measurement of above-mentioned wear resistance.After band operating, Cog belt B quality is measured again, is calculated front and rear of poor quality be used as of operating and is worn quality.

After the quality for measuring each cog belt of embodiment 6-1~embodiment 6-13 and comparative example 6, in new machine oil with 140 DEG C impregnate 168 hours.Then, the oil of attachment is fully removed by air cannon, measures quality again.Before calculating dipping Mass change (being represented with %) afterwards.

(test assessment result)

Experimental result is shown in table 9 and table 10.In addition, in the case of not illustrating below, cellulose is ultra-fine The content of fiber refers to the mass parts of the rubber constituent relative to 100 mass parts.

[table 9]

[table 10]

It can be seen from table 10, it is ultra-fine to be crosslinked the cellulose contained in the rubber composition of rubber 1~6 and rubber 9~14 The distribution of the fibre diameter of fiber is relatively broad.

- teeth portion fracture resistance (room temperature)-

In cog belt main body and rubber paste adhesive layer do not contain the comparative example 6 of cellulose superfine fibre, room temperature Teeth portion endurance life is 384 hours.

On the other hand, 0 mass parts, 1 mass are distinguished containing cellulose superfine fibre, its content only in cog belt main body Embodiment 6-1~embodiment the 6-4 and reality of part, 3 mass parts, 5 mass parts, 10 mass parts, 15 mass parts and 25 mass parts Apply in a 6-11~embodiment 6-12, teeth portion endurance life of room temperature be followed successively by 528 hours, 696 hours, 792 hours, it is 864 small When, 936 hours and 1056 hours.That is, it follows that in the range of the present embodiment, with containing for cellulose superfine fibre Amount increase, teeth portion endurance life are elongated.

In addition, it can be seen that the cellulose superfine fibre of cog belt main body content be all 10 mass parts embodiment In 6-4~embodiment 6-10, with the content increase of the cellulose superfine fibre of rubber paste adhesive layer, substantially teeth portion durable longevity Order elongated.Specifically, the content of the cellulose superfine fibre in embodiment 6-4~embodiment 6-10 rubber paste adhesive layer point Not Wei 0 mass parts, 1 mass parts, 3 mass parts, 5 mass parts, 10 mass parts, 15 mass parts and 25 mass parts, correspond to therewith, room Temperature under teeth portion endurance life be followed successively by 864 hours, 912 hours, 960 hours, 1032 hours, 1080 hours, 1128 hours with And 1128 hours.In addition, in embodiment 6-9 and embodiment 6-10, teeth portion endurance life is identical, it is therefore contemplated that When the content of cellulose superfine fibre is more than 15 mass parts, the raising effect of teeth portion durability is likely to be breached saturation.

In addition, only in rubber paste adhesive layer in the embodiment 6-13 of the cellulose superfine fibre containing 10 mass parts, tooth Portion's endurance life is 456 hours, slightly long relative to 384 hours of comparative example 6.But the cellulose in cog belt main body is ultra-fine In the case of embodiment 6-8 of the content of fiber for 10 mass parts, although the cellulose superfine fibre of rubber paste adhesive layer contains Amount is identical with embodiment 6-13, but teeth portion endurance life is 1080 hours, significantly better than embodiment 6-13.

It follows that the feelings that any one contains cellulose superfine fibre in cog belt main body and rubber paste adhesive layer Under condition, teeth portion endurance life can be improved, still, effect is more notable in the case of containing in cog belt main body.

- teeth portion fracture resistance (80 DEG C)-

In cog belt main body and rubber paste adhesive layer do not contain the comparative example 6 of cellulose superfine fibre, 80 DEG C Teeth portion endurance life is 240 hours.

On the other hand, contain cellulose superfine fibre only in cog belt main body, its content is respectively 0 mass parts, 1 mass parts, 3 Mass parts, 5 mass parts, 10 mass parts, the embodiment 6-1~embodiment 6-4 and embodiment of 15 mass parts and 25 mass parts In 6-11~embodiment 6-12, the teeth portion endurance life at 80 DEG C be followed successively by 432 hours, 624 hours, 744 hours, 792 hours, 888 hours and 9126 hours.That is, it follows that in the range of the present embodiment, increase with the content of cellulose superfine fibre Add, the teeth portion endurance life under high temperature is elongated.

In addition, the teeth portion endurance life of high temperature (80 DEG C) is shorter than the teeth portion endurance life of room temperature.But by containing fibre Its degradation can be mitigated by tieing up plain superfine fibre.That is, in comparative example 6, the teeth portion endurance life of room temperature is 384 hours, with Corresponding, 80 DEG C of teeth portion endurance life is 240 hours, deterioration 38% or so.On the other hand, 1 is contained in cog belt main body In the embodiment 6-1 of the cellulose superfine fibre of mass parts, the teeth portion endurance life of room temperature is 528 hours, is corresponded to therewith, 80 DEG C Teeth portion endurance life be 432 hours, deterioration 18% or so.In embodiment 6-2, embodiment 6-3, embodiment 6-4, embodiment 6- In 11 and embodiment 6-12, its degradation is followed successively by 10%, 6%, 8%, 5% and 14% or so, it can be seen that, and not Situation containing cellulose superfine fibre is compared, the larger mitigation of degradation.

As described above, the main reason for teeth portion endurance life by that can mitigate high temperature containing cellulose superfine fibre, exists In linear expansion coefficient can be reduced.That is, the linear expansion coefficient by the way that cog belt containing cellulose superfine fibre, can be reduced.Such as Fruit linear expansion coefficient is reduced, then the teeth portion expansion under high temperature is suppressed.As a result, teeth portion and belt wheel can be maintained at high temperature Occlusion precision, suppress temperature rise caused by teeth portion burden increase, as a result, it is resistance to be speculated as suppressing teeth portion under high temperature The long life-span deteriorates.

- wear resistance-

In cog belt main body and rubber paste adhesive layer do not contain the comparative example 6 of cellulose superfine fibre, matter is worn Measure as 4.1g.In addition, embodiment 6-1~embodiment 6-4 and reality only containing cellulose superfine fibre in cog belt main body Apply in a 6-11~embodiment 6-12, abrasion quality is 3.9g~4.3g.It follows that only contain cellulose in cog belt main body Superfine fibre, wear resistance can not be significantly improved.

On the other hand, the cellulose superfine fibre of cog belt main body content be all 10 mass parts embodiment 6-4~ In embodiment 6-10, the content of the cellulose superfine fibre of rubber paste adhesive layer be respectively 0 mass parts, 1 mass parts, 3 mass parts, 5 mass parts, 10 mass parts, 15 mass parts and 25 mass parts, are corresponded to therewith, abrasion quality be followed successively by 4.2g, 3.3g, 2.5g, 2.1g, 1.8g, 1.4g and 1.3g.That is, as the content of the cellulose superfine fibre of rubber paste adhesive layer increases, quality is worn Reduce.Wherein, if abrasion quality is below 3.5g, then it is assumed that obtained excellent improvement relative to current condition.

In addition, during the embodiment 6-13 of cellulose superfine fibre is not contained in cog belt main body, in rubber paste adhesive layer Cellulose superfine fibre containing 10 mass parts, abrasion quality are 2.0g, it is seen that significantly improve wear resistance.

It follows that by that can be played containing cellulose superfine fibre in the rubber paste adhesive layer of teeth portion side reinforcement cloth Improve the effect of wear resistance.

In cog belt main body and rubber paste adhesive layer do not contain the comparative example 6 of cellulose superfine fibre, as resistance to Mass change amount before and after the oil swell of the evaluation index of oiliness is 4.4%.

On the other hand, contain cellulose superfine fibre only in cog belt main body, its content is respectively 0 mass parts, 1 mass parts, 3 Embodiment 6-1~embodiment the 6-4 and embodiment of mass parts, 5 mass parts, 10 mass parts, 15 mass parts and 25 mass parts In 6-11~embodiment 6-12, mass change amount is followed successively by 3.9%, 3.7%, 3.1%, 2.8%, 1.9% and 1.5%.That is, It follows that in the range of the present embodiment, with the content increase of cellulose superfine fibre, mass change amount diminishes, oil resistant Property improve.

In addition, the cellulose superfine fibre of cog belt main body content be all 10 mass parts embodiment 6-4~implementation In example 6-10, the content of the cellulose superfine fibre of rubber paste adhesive layer is respectively 0 mass parts, 1 mass parts, 3 mass parts, 5 matter Measure part, 10 mass parts, 15 mass parts and 25 mass parts, correspond to therewith, mass change amount is followed successively by 2.8%, 2.8%, 2.7%th, 2.6%, 2.3%, 2.2% and 2.1%.That is, it follows that cellulose superfine fibre with rubber paste adhesive layer Content increase, mass change diminishes, and oil resistivity improves.

In addition, only in rubber paste adhesive layer in the embodiment 6-13 of the cellulose superfine fibre containing 10 mass parts, matter Quantitative change rate is 4.3%, is slightly suppressed relative to the 4.4% of comparative example 6.Contain in the cellulose superfine fibre of cog belt main body In the case of measuring the embodiment 6-8 for 10 mass parts, content and the embodiment 6- of the cellulose superfine fibre of rubber paste adhesive layer 13 is identical, still, mass change 2.3%.

It follows that by containing cellulose family superfine fibre in cog belt main body, it is possible to increase oil resistivity, only in tooth Portion side is strengthened in the case of containing cellulose superfine fibre in the rubber paste adhesive layer of cloth, although effect is smaller, can also carry High oil resistivity.In addition, it can be seen that in the situation of cog belt main body and rubber paste adhesive layer containing cellulose superfine fibre Under, oil resistivity can be significantly improved.

Industrial applicibility

The present invention is for being useful for the band of transmission.

Claims

1. a kind of transmission belt, transmission belt passing power on belt wheel, it is characterised in that

The transmission belt has the layer that is made up of rubber composition, the rubber composition contain cellulose family superfine fibre and Average diameter is more than 1 μm of chopped fiber.

2. transmission belt according to claim 1, it is characterised in that

The distribution of the fibre diameter of the cellulose family superfine fibre includes 20~500nm.

3. transmission belt according to claim 1 or 2, it is characterised in that

Unmated carbon black in the rubber composition.

4. transmission belt according to any one of claim 1 to 3, it is characterised in that

The cellulose family superfine fibre is manufactured by machinery solution method for fiber.

5. transmission belt according to any one of claim 1 to 3, it is characterised in that

The cellulose family superfine fibre is manufactured by chemistry solution method for fiber.

6. transmission belt according to any one of claim 1 to 5, it is characterised in that

The distribution of the fibre diameter of the cellulose family superfine fibre includes 50~500nm.

7. transmission belt according to any one of claim 1 to 6, it is characterised in that

Relative to the rubber constituent of the rubber composition of 100 mass parts, the content of the cellulose family superfine fibre for 1~ 25 mass parts.

8. transmission belt according to any one of claim 1 to 7, it is characterised in that

The rubber composition contains the chopped fiber that fibre diameter is more than 10 μm.

9. transmission belt according to claim 8, it is characterised in that

The chopped fiber is more than the cellulose family relative to the content of the rubber constituent of the rubber composition of 100 mass parts Superfine fibre relative to the rubber constituent of the rubber composition of 100 mass parts content.

10. according to transmission belt according to any one of claims 1 to 9, it is characterised in that

The transmission belt is cog belt, possesses cog belt main body and cloth is strengthened in teeth portion side,

The cog belt main body has the base portion of flat ribbon and in a side of the base portion along with length direction interval The multiple teeth portion being wholely set,

The teeth portion side reinforcement cloth is attached at described the adhesive layer comprising rubber constituent in a manner of covering teeth portion side surface Cog belt main body,

It is at least one by containing cellulose family superfine fibre and averagely in the base portion, the teeth portion and the adhesive layer The rubber composition of a diameter of more than 1 μm of chopped fiber is formed.

11. transmission belt according to claim 10, it is characterised in that

Relative to the rubber constituent of 100 mass parts, the content of the cellulose family superfine fibre in the rubber composition is 1 ~30 mass parts.

12. the transmission belt according to claim 10 or 11, it is characterised in that

The rubber constituent for forming the rubber composition of the cog belt main body includes hydrogenated acrylonitrile nitrile rubber.

13. the transmission belt according to any one of claim 10 to 12, it is characterised in that

The rubber constituent included in the adhesive layer includes the hydrogen that hydrogenated acrylonitrile nitrile rubber and metallic salts of unsaturated carboxylate are strengthened Change acrylic-nitrile rubber.