CN108602622A - Rubber composition for conveyor belt and conveyer belt - Google Patents
Rubber composition for conveyor belt and conveyer belt Download PDFInfo
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- CN108602622A CN108602622A CN201780011054.XA CN201780011054A CN108602622A CN 108602622 A CN108602622 A CN 108602622A CN 201780011054 A CN201780011054 A CN 201780011054A CN 108602622 A CN108602622 A CN 108602622A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Belt Conveyors (AREA)
Abstract
The present invention provide it is a kind of can make with superior erosion covering rubber layer conveyer belt rubber composition for conveyor belt and use the rubber composition for conveyor belt conveyer belt.The rubber composition for conveyor belt of the present invention contains：Rubber constituent contains 45~100 mass % of butadiene rubber；Ultra-high molecular weight polyethylene；And carbon black, the content of above-mentioned ultra-high molecular weight polyethylene is 1.0~15.0 mass parts relative to 100 mass parts of above-mentioned rubber constituent, the content of above-mentioned carbon black is 25~45 mass parts relative to 100 mass parts of above-mentioned rubber constituent, and the N2 adsorption specific surface area of above-mentioned carbon black is 85~160m2/ g, dibutyl phthalate oil absorption are 105~140ml/100g.
Description
Technical field
The present invention relates to a kind of rubber composition for conveyor belt and conveyer belts.
Background technology
The rubber strip for being used as conveyer belt is：By including canvas, steel cord etc. core (hereinafter referred to as " enhancement layer ") and
The upper surface and lower surface of above-mentioned core covers rubber layer by upper surface and lower surface covering rubber layer is covered each by
Layered structure.The rubber strip constitutes belt conveyer (belt conveyor), the both ends of rubber strip are interconnected and
Be processed into cricoid conveyer belt, by carrying out cycle driving to the transport path formed by many roller and belt wheel, and make by
Object is conveyed (for example, the bulks such as ore, soil sand and cereal；Case, bag, pallet isometric(al) object；Deng) along above-mentioned transport path
Carry out continuous conveying.
Belt conveyer drives conveyer belt by above-mentioned belt wheel rotates.Known power consumption at this time is generally, if conveying
Path length, then power consumption increases captain's length of belt conveyer.Think the reason is that：When captain is long, then conveyer belt is supported
Roller number increases, therefore by contact of the covering rubber layer with roller of the lower surface of conveyer belt leads to the power loss generated (energy damages
Lose) increase.
In contrast, describing in patent document 1：" a kind of rubber composition for conveyor belt, contains：Rubber constituent,
Containing natural rubber (NR) and butadiene rubber (BR), the mass ratio of the natural rubber (NR) and the butadiene rubber (BR)
(NR/BR) it is 90/10~55/45；Ultra-high molecular weight polyethylene；And carbon black, the content phase of the ultra-high molecular weight polyethylene
It is 5~22 mass parts for 100 mass parts of the rubber constituent, the content of the carbon black is relative to 100 matter of the rubber constituent
Amount part is 5~55 mass parts, and the content of fatty acid amide is less than 5 mass parts relative to 100 mass parts of the rubber constituent ", with
And by the composition " at least be used for lower surface cover rubber conveyer belt " ([claim 1], [claim 4]).
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2012-57001 bulletins
Invention content
Problems to be solved by the invention
Here, it is known at the covering rubber layer of conveyer belt, due to repeating the friction etc. generated between transported material,
And it can gradually cause the destruction at tiny area.The phenomenon is referred to as wearing away, and covering rubber layer is (resistance to for the intensity of abrasion
Abrasivity) it is directly linked with durability period of conveyer belt itself, therefore excellent abrasion performance is required for covering rubber layer.
Moreover, the present inventor is to the conveyer belt that rubber composition is used to cover rubber layer recorded in patent document 1
When being studied, the not sufficient truth of abrasion performance of covering rubber layer is found.
Therefore, problem of the present invention is that, a kind of biography that can make the covering rubber layer with superior erosion is provided
Send the rubber composition for conveyor belt of band and the conveyer belt using the rubber composition for conveyor belt.
Technical solution
The present inventor has made intensive studies to solve the above-mentioned problems, as a result, it has been found that：In addition to the fourth containing specified amount
Other than the rubber constituent of diene rubber, also containing ultra-high molecular weight polyethylene and with defined characteristic in rubber composition
Carbon black, thus, it is possible to obtain to make the rubber composition for conveyor belt of the conveyer belt of the covering rubber layer with superior erosion
And the conveyer belt using the rubber composition for conveyor belt.
That is, finding：It can be solved the above problems by composition below.
(1) a kind of rubber composition for conveyor belt, contains：Rubber constituent contains 45~100 matter of butadiene rubber
Measure %；Ultra-high molecular weight polyethylene；And carbon black, the content of above-mentioned ultra-high molecular weight polyethylene is relative to above-mentioned rubber constituent
100 mass parts are 1.0~15.0 mass parts, and the content of above-mentioned carbon black is 25~45 relative to 100 mass parts of above-mentioned rubber constituent
The N2 adsorption specific surface area of mass parts, above-mentioned carbon black is 85~160m2/ g, dibutyl phthalate oil absorption be 105~
140ml/100g。
(2) according to the rubber composition for conveyor belt described in (1), wherein the weight average molecular weight of above-mentioned butadiene rubber is
500000~1,000,000.
(3) according to the rubber composition for conveyor belt described in (1) or (2), wherein the weight average molecular weight phase of butadiene rubber
The ratio between Long-chain-branching index (LCB values) for butadiene rubber (weight average molecular weight/Long-chain-branching index) is 5.5 × 104~
16.6×104。
(4) rubber composition for conveyor belt according to any one of (1)~(3), wherein above-mentioned super high molecular weight is poly-
The viscosity average molecular weigh of ethylene is 500,000~4,000,000.
(5) a kind of conveyer belt covers rubber layer, at least with upper surface covering rubber layer, enhancement layer and lower surface
Above-mentioned upper surface covering rubber layer has used the rubber composition for conveyor belt described in any one of (1)~(4).
Advantageous effect
According to the present invention, a kind of transmission for the conveyer belt making the covering rubber layer with superior erosion can be provided
Band rubber composition and the conveyer belt for using the rubber composition for conveyor belt.
Description of the drawings
Fig. 1 is the sectional view of an example for the embodiment for schematically showing the conveyer belt of the present invention.
Specific implementation mode
Hereinafter, explaining the present invention in detail.
One of the rubber composition for conveyor belt of the present invention is characterized in that, in addition to the butadiene rubber containing specified amount
Other than rubber constituent, the carbon black also containing ultra-high molecular weight polyethylene and with defined characteristic.This is the inventors discovered that being
The abrasion performance of the covering rubber layer of conveyer belt is improved, and (hereinafter referred to as the rubber composition for conveyor belt after vulcanization
For " rubber composition after vulcanization "), other than the abrasion resistance test result implemented in the past, it is important that try stretching
Test middle test film be stretched 50% when stress (hereinafter referred to as " M50 ") and loss angle tangent (tan δ) controlled, and
Carry out what formula design was realized on the basis of this.
Abrasion for the covering rubber layer of conveyer belt, such as cover rubber layer if upper surface, then for due to being conveyed
The breakoff phenomenon of rubber composition after the vulcanization at tiny area that the friction of object and covering rubber layer generates.Abrasion loss with
Frictional force between rubs mutually individual is bigger and more, and frictional force is according to load, sliding speed, surface roughness, environment temperature
It changes etc. various elements.If this indicates different using the environment of conveyer belt, the main element of abrasion is generated, i.e., to rubbing
It is different to wipe the element that power has an impact.Therefore, as previous in this way, the abrasion performance for the rubber composition being only conceived to after vulcanization tries
The numerical value of result is tested, even if carrying out formula design, it is also difficult to obtain that the covering rubber layer with superior erosion can be made
The rubber composition for conveyor belt of conveyer belt and the conveyer belt for using the rubber composition for conveyor belt.
But present inventor has performed further investigations, as a result, it has been found that：In addition to being conceived to for the rubber composition after vulcanization
Abrasion resistance test result other than, be also conceived to vulcanization after rubber composition M50 and loss angle tangent and matched
Side's design, thus, it is possible to obtain to make the conveyer belt building rubber compound of the conveyer belt of the covering rubber layer with superior erosion
Object and the conveyer belt for using the rubber composition for conveyor belt.
That is, the inventors discovered that following fact, to carry out formula design, so as to complete the present invention：By will be by adhering to
Item Fs, sluggish item Fe, roll set friction term FpThe sum of (F=Fs+Fe+Fp) indicate the solid friction of frictional force F generated between individual
The abrasion that basic principle is applied to conveyer belt parse, just to the abrasion of the pik of the rubber composition after vulcanization, M50 and loss angle
It cuts into row control and abrasion performance can be improved.
Although the explanation of recorded constitutive requirements is carried out based on the representative embodiments of the present invention below, this hair
It is bright not limited by such embodiment.
It should be noted that in the present specification, the numberical range indicated with "~" refers to comprising "~" front and back record
Numerical value is as lower limiting value and the range of upper limit value.
[rubber composition for conveyor belt]
The rubber composition for conveyor belt (hereinafter referred to as " rubber composition of the invention ") of embodiments of the present invention is
Rubber composition for conveyor belt contains：Rubber constituent contains 45~100 mass % of butadiene rubber；Superhigh molecular weight polyethylene
Alkene；And carbon black, the content of above-mentioned ultra-high molecular weight polyethylene are 1.0~15.0 relative to 100 mass parts of above-mentioned rubber constituent
Mass parts, the content of above-mentioned carbon black are 25~45 mass parts relative to 100 mass parts of above-mentioned rubber constituent, and the nitrogen of above-mentioned carbon black is inhaled
Attached specific surface area is 85~160m2/ g, dibutyl phthalate oil absorption are 105~140ml/100g.
Hereinafter, illustrating each ingredient contained by the rubber composition of the present invention.
(rubber constituent)
Rubber constituent contained by the rubber composition of the present invention contains 45~100 mass % of butadiene rubber (BR).If
The content of butadiene rubber is less than lower limiting value, then causes M50 to reduce, and loss angle tangent and pik abrasion increase, abrasion performance
Difference.
In addition, the content of the butadiene rubber (BR) of above-mentioned rubber constituent is preferably 55~100 mass %, more preferably 75
~95 mass %, further preferably 85~90 mass %.If the content of butadiene rubber (BR) is lower limiting value or more, inciting somebody to action
In the case that the sulfide of the rubber composition of the present invention is for big load and the covering rubber layer of the conveyer belt of low-speed running, tool
There is superior abrasion performance.In addition, if butadiene rubber (BR) content be upper limit value hereinafter, if rubber composition have it is excellent
Different processability.
Above-mentioned rubber constituent can contain the rubber other than butadiene rubber (BR).Other than butadiene rubber (BR)
Rubber, such as can enumerate：Natural rubber (NR), isoprene rubber, SBR styrene butadiene rubbers and ethylene-propylene-two
Alkene rubber etc..Wherein, in terms of excellent with the intermiscibility of butadiene rubber (BR) on preferred natural rubber (NR).
In the case of containing natural rubber (NR) in above-mentioned rubber constituent, natural rubber (NR) in above-mentioned rubber constituent
Content containing mass ratio (NR/BR) is preferably 10/90~55/45 relative to the content of butadiene rubber (BR), more preferably
20/85~45/55, further preferably 25/75~45/55.If rubber compositions of the NR/BR after these ranges, vulcanization
Loss angle tangent become smaller, in the covering of conveyer belt for being used to run at high speed by the sulfide of the rubber composition of the present invention
In the case of rubber layer, there is superior abrasion performance.
<Butadiene rubber (BR)>
The weight average molecular weight of butadiene rubber (BR) in above-mentioned rubber constituent is preferably 500,000~1,000,000, more preferably
700000~1,000,000.If weight average molecular weight is 500,000~1,000,000, it is easy to that the M50 of the rubber composition after vulcanization is made to become more
Greatly, loss angle tangent becomes smaller, for Smaller load and/or runs at high speed by the sulfide of the rubber composition of the present invention
In the case of the covering rubber layer of conveyer belt, then there is superior abrasion performance.
It should be noted that weight average molecular weight is to pass through gel permeation chromatography (Gel permeation
Chromatography (GPC)) weight average molecular weight (polystyrene conversion) that determines, it preferably measures and uses tetrahydrofuran
(THF) it is used as solvent.
Mooney viscosity under the unvulcanized state of above-mentioned butadiene rubber (BR) is preferably 40~90, more preferably 50~
80.If the Mooney viscosity of butadiene rubber (BR), in these ranges, the processability of rubber composition is better.
It should be noted that Mooney viscosity is：According to JIS K6300 be measured using mooney's viscosimeter, at 100 DEG C
Mooney viscosity (ML1+4).
The weight average molecular weight of above-mentioned butadiene rubber (BR) relative to butadiene rubber Long-chain-branching index (LCB values) it
It is preferably 5.5 × 10 than (weight average molecular weight/Long-chain-branching index)4~16.6 × 104, more preferably 5.8 × 104~15.3 ×
104, further preferably 7.5 × 104~14.2 × 104, particularly preferably 8.2 × 104~14.2 × 104.If weight average molecular weight
It is 5.5 × 10 relative to the ratio between Long-chain-branching index (LCB values)4~16.6 × 104, then it is easy to make the rubber composition after vulcanization
M50 become much larger, loss angle tangent becomes smaller, by the present invention rubber composition sulfide for Smaller load and/
Or in the case of the covering rubber layer of the conveyer belt to run at high speed, then there is superior abrasion performance.
It should be noted that in the present specification, Long-chain-branching index (LCB values：Long Chain Branch) refer to,
Using RPA2000 types testing machine (manufacture of Alpha Technologies companies), LAOS (Large Amplitude are utilized
Oscillatory Shear：Large amplitude oscillatory shear) value that determines of assay method.Long-chain-branching index indicates：Obtained number
Value is closer to the polymer that zero is that the linearity is higher, the degree of branching is lower.It is therefore contemplated that weight average molecular weight is relative to long chain branching
The ratio between index (LCB values) has positive correlativity with per unit molecule chain end number that butadiene rubber has, thus it is speculated that
Go out：By the way that the value to be set in above range, the effect for further decreasing loss angle tangent can be especially obtained.It needs to illustrate
It is, about the details of Long-chain-branching index (LCB values), to be referred to " FT-Rheology, a Tool to Quantify Long
Chain Branching(LCB)in Natural Rubber and its Effect on Mastication,Mixing
Behavior and Final Properties.”(Henri G.Burhin,Alpha Technologies,UK 15Rue du
Culot B-1435Hevillers, Belgium) etc..
It should be noted that in the case where rubber composition contains two or more butadiene rubbers, butadiene rubber
Weight average molecular weight can be according to following relative to the ratio between Long-chain-branching index (LCB values) (weight average molecular weight/Long-chain-branching index)
Formula calculated.
Formula：M/L=Σ { (Mi/Li)×ai}
In above-mentioned formula, M/L indicate butadiene rubber weight average molecular weight relative to Long-chain-branching index (LCB values) it
Than Mi、LiAnd aiEach fourth contained in the weight average molecular weight, LCB values and rubber composition of each butadiene rubber is indicated respectively
Mass fraction of the diene rubber relative to total butadiene rubber, Σ indicate summation.
Above-mentioned butadiene rubber (BR) can be synthesized by well known method, such as can be by inert organic solvents
In, in the presence of the catalyst comprising transistion metal compound, polymerized butadiene and manufactured.As catalyst, such as can
It enumerates：Cobalt system, vanadium system, lithium system, nickel system, neodymium series etc..Wherein, preferably cobalt system, neodymium series, more preferable neodymium series.For being urged in neodymium series
In the presence of agent, make butadiene rubber obtained from polymerizing butadiene, in its micro-structure, is easy to branched and forms straight chain less
Shape, as described above, being easy to that the loss angle tangent of the rubber composition after vulcanization is made to become smaller.
(ultra-high molecular weight polyethylene)
The rubber composition of the present invention contains ultra-high molecular weight polyethylene (U-PE).After capable of maintaining vulcanization on one side as a result,
The loss angle tangent of rubber composition, increases M50 on one side.Deduce this is because：Ultra-high molecular weight polyethylene and above-mentioned rubber
The intermiscibility of butadiene rubber in ingredient is poor, by being coordinated, can reduce to the loss angle of rubber constituent itself just
Caused by cutting on the other hand influence by the way that U-PE to be scattered in rubber constituent, contributes to the raising of M50.
The content of above-mentioned ultra-high molecular weight polyethylene (U-PE) relative to 100 mass parts of above-mentioned rubber constituent be 1.0~
15.0 mass parts.If the content of ultra-high molecular weight polyethylene (U-PE) is smaller than lower limiting value, the M50 of the rubber composition after vulcanization
Small, abrasion performance is poor.On the other hand, if it is bigger than upper limit value, cause loss angle tangent and pik to wear away and increase, as knot
The abrasion performance of fruit, the rubber composition after vulcanization is poor.Wherein, rubber composition after curing has excellent bending resistance
Aspect on, more preferably 1.0~12.0 mass parts, further preferably 1.0~10.0 mass parts.
As the molecular weight of above-mentioned ultra-high molecular weight polyethylene (U-PE), viscosity average molecular weigh is preferably 500,000~4,000,000, more
Preferably 1,000,000~3,000,000.If molecular weight is further increased in these ranges, M50, and processability is also difficult to be damaged.
It should be noted that the viscosity average molecular weigh of ultra-high molecular weight polyethylene (U-PE) is to pass through intrinsic viscosity method (ASTM
D4020-11 X5.NOMINAL VISCOSITY AVERAGE MOLECULAR WEIGHT OF ULTRA-HIGH
MOLECULAR-WEIGHT POLYETHYLENE) molecular weight that determines.
In addition, the average grain diameter of above-mentioned ultra-high molecular weight polyethylene (U-PE) is preferably 1~300 μm, more preferably 10~
50μm.If average grain diameter in these ranges, is easy to make the favorable dispersibility in rubber.
Above-mentioned ultra-high molecular weight polyethylene (U-PE) can for example obtain MIPELON XM220 (Mitsui Chemicals, Inc.'s system is made),
HI-ZEX MILLION 340M (Mitsui Chemicals, Inc.'s system is made) etc..(carbon black)
The rubber composition of the present invention contains carbon black (CB).The content of above-mentioned carbon black (CB) is relative to above-mentioned rubber constituent
100 mass parts are 25~45 mass parts, preferably 30~40 mass parts.If the content of carbon black (CB) is less than lower limiting value, cause
The M50 of rubber composition after vulcanization is small, and pik abrasion also increase, as a result, the abrasion performance of the rubber composition after vulcanization
Property is poor.On the other hand, if it is bigger than upper limit value, cause loss angle tangent to increase, as a result, the abrasion performance after vulcanization is poor.
The N2 adsorption specific surface area of above-mentioned carbon black contained by the rubber composition of the present invention is 85~160m2/ g, adjacent benzene
Dibutyl carboxylic acid oil absorption is 105~140ml/100g.Without containing carbon black with the above characteristics (CB), sulphur
The M50 of rubber composition after change is small, and pik abrasion increase, as a result, the abrasion performance of the rubber composition after vulcanization is poor.
As carbon black with the above characteristics, such as can enumerate：SAF, ISAF-HS, ISAF-LS, HAF-HS grades, in sulphur
The M50 biggers of rubber composition after change, loss angle tangent become smaller, as a result, the rubber composition after vulcanization is resistance to
In the superior aspect of abrasivity, more preferably HAF-HS, ISAF-HS and ISAF-LS grades.
As the commercially available product of carbon black, SHOBLACK N110 can be obtained, N234, N220, N339 (are CABOT JAPAN public
Department's manufacture).
In addition, the M50 biggers of rubber composition after curing, loss angle tangent become smaller, as a result, after vulcanization
Rubber composition the superior aspect of abrasion performance on, the N2 adsorption specific surface area of more preferable carbon black (CB) is 85~
125m2/ g, dibutyl phthalate oil absorption are 110~125ml/100g.
It should be noted that above-mentioned N2 adsorption specific surface area is the value determined according to ASTM D4820-93, carbon black is indicated
The index of the smallness of the grain size of particle, dibutyl phthalate oil absorption are the value determined according to ASTM D2414-93,
The index of the link condition of expression carbon black particle, the i.e. size (complexity of shape) of structure.
(other compositions)
The rubber composition of the present invention can contain vulcanizing agent, vulcanization aid, vulcanization rush other than above-mentioned each ingredient
Into the crosslinking agents such as agent, vulcanization retarder, moreover, in the range for not damaging the purpose of the present invention, various compounding agents can be contained.
As vulcanizing agent, such as can enumerate：Sulphur system, organic peroxide system, metal oxide system, phenolic resin, quinone
Vulcanizing agents such as dioxime etc..
As sulphur system vulcanizing agent, such as can enumerate：Powder sulphur, settleability sulphur, polymolecularity sulphur, surface treatment sulphur, no
Dissolubility sulphur, dithio morpholine, alkylphenol disulfides etc..
As vulcanization accelerator, such as can enumerate：Aldehyde ammonia system, guanidine system, thiocarbamide system, thiazole system, sulfenamide system, autumn
Vulcanization accelerators such as blue nurse system, dithiocar-bamate system etc..
As sulfenamide system vulcanization accelerator, specifically, can for example enumerate：N- cyclohexyl -2-[4-morpholinodithio
Sulfonamide (CZ), N tert butyl benzothiazole 2 sulfenamide (NS) etc..
As vulcanization aid, can be used together with common rubber used additives, such as can enumerate：Zinc oxide, tristearin
Acid and oleic acid and their zinc salt etc..
Total content in the case of containing such vulcanizing agent, vulcanization accelerator and vulcanization aid is relative to above-mentioned
100 mass parts of rubber constituent, preferably 0.1~10 mass parts, more preferably 0.5~5 mass parts.If the range of content is at these
Range, then effect of the invention is better.
As compounding agent, such as can enumerate：Intensive (filler), age resister, antioxygen other than above-mentioned carbon black
Agent, pigment (dyestuff), plasticizer, thixotropy conferring agents, ultra-violet absorber, fire retardant, solvent, surfactant are (containing stream
Flat agent), dispersant, dehydrating agent, antirust agent, tackifier, antistatic agent, processing aid etc..
These compounding agents can use the conventional compounding agent of rubber composition.For their use level also without spy
It does not limit, can arbitrarily select.
(production method)
The rubber composition of the present invention can the making by following：It is poly- to add above-mentioned rubber constituent, super high molecular weight
Ethylene, carbon black, the various compounding agents contained by other, are kneaded using Banbury mixer etc., then, utilize mixing roller machine
Deng mixing vulcanizing agent, vulcanization aid, vulcanization accelerator.
In addition, vulcanization can be carried out in usually used condition.Specifically, for example can be by 148 DEG C of temperature
Left and right under conditions of 30 minutes, is heated to carry out.
[conveyer belt for using rubber composition for conveyor belt]
(composition)
The conveyer belt (hereinafter referred to as " conveyer belt of the invention ") of embodiments of the present invention be with：Upper surface covers
Rubber layer, enhancement layer and lower surface cover rubber layer, and at least the above upper surface covering rubber layer uses the rubber of the present invention
The conveyer belt of composition.
Hereinafter, illustrate the conveyer belt of the present invention using Fig. 1, but it's not limited to that for the construction of the conveyer belt of the present invention.
For example, can rubber layer be covered for upper surface covering rubber layer and lower surface for the rubber composition of the present invention.
Fig. 1 is the sectional view of an example for the embodiment for schematically showing the conveyer belt of the present invention.Conveyer belt 10 is will
Enhancement layer 1 and the layered structure made of upper surface covering rubber layer 2 and the lower surface covering covering of rubber layer 3 above and below it.
Upper surface covers rubber layer 2 by 4 side of conveyor surface, there is outer layer 2a and internal layer 2b successively.Similarly, lower surface is covered
Lid rubber layer 3 also by the face to connect with the driving pulley of belt conveyer (not shown) or roller, successively have outer layer 3a and
Internal layer 3b.These outer layers (2a, 3a) and internal layer (2b, 3b) can be formed using identical rubber composition respectively, also may be used
It is formed with using different rubber compositions.In addition, outer layer (2a, 3a) and internal layer (2b, 3b) can be multi-ply construction.
Conveyer belt 10 is that at least upper surface covering rubber layer 2 uses the conveyer belt of the rubber composition of the present invention.Therefore, only
It to be formed selected from least one layer of rubber composition using the present invention in the group being made of outer layer 2a and internal layer 2b.This
The rubber composition of invention is preferably used for the rubber composition for the outer layer 2a being in direct contact with transported material.On the other hand, right
For internal layer 2b, the cementability due to manufacturing cost to be paid attention to, with enhancement layer 1, it is preferable to use other building rubber compounds
Object is formed, and according to above reason, preferably upper surface covering rubber layer 2 is made up of multiple layers.
Rubber layer 3 is covered similarly for the lower surface of conveyer belt 10, is preferably made up of multiple layers.At this point it is possible to incite somebody to action this
Either one or two sides of the rubber composition of invention for outer layer 3a, internal layer 3b, can also be by the building rubber compound with the present invention
The different rubber composition of object is used for outer layer 3a and internal layer 3b.
The core of enhancement layer 1 is simultaneously not particularly limited, and can be suitably selected from using the core used in common conveyer belt, such as can
It enumerates：It is coated on the object being made of cotton, chemical fibre or synthetic fibers, infiltrates core made of rubber paste；RFL
(Resorcin Formalin Latex；Resorcinol formalin latex) processing after fold made of core；It is canvas, special
Nylon canvas, steel cord of braiding etc..They can be used alone, and can also be applied in combination two or more.
It can be sheet in addition, the shape of enhancement layer 1 and being not particularly limited, or embedded linear reinforcement side by side
The shape of line.
The manufacturing method of conveyer belt 10 is simultaneously not particularly limited, and commonly used approach etc. may be used.Specifically, passing through
It makes so below：First, using roller (roll), kneader or Banbury mixer etc., to the rubber composition of the present invention
Or after other rubber compositions are kneaded, it is shaped to sheet using stack (calendar roll) etc., it is used for upper table
Face covers rubber layer 2 and lower surface covers rubber layer 3, then, by obtained each layer according in a manner of enhancement layer 1 is clamped
Defined sequence is laminated, and carries out pressurizeing for 5~30 minutes at a temperature of 130~170 DEG C.
For the conveyer belt 10 of the present invention, since upper surface covers rubber layer 2, preferably its outer layer 2a uses rubber of the invention
Glue composition is formed, therefore excellent wear resistance.
Embodiment
Hereinafter, illustrating the present invention in further detail based on embodiment.Material, usage amount shown in embodiment below,
Ratio, process content, processing sequence etc., without departing from present subject matter, so that it may with suitable for change.Therefore, model of the invention
It encloses and should not restrictively be explained by embodiment described below.
(preparation of the rubber composition after rubber composition and vulcanization)
By each ingredient shown in use level (mass parts) cooperation table 1 shown in table 1, using Banbury mixer, by them
It is equably kneaded, prepares the rubber composition of each embodiment, comparative example shown in table 1.Obtained rubber composition is existed
At 148 DEG C, vulcanize 30 minutes, prepares the rubber composition after vulcanization.
(physical property after vulcanization)
<M50>
The test film of No. 3 dumbbell shapeds is punched to using the rubber composition after each vulcanization by preparing, according to JIS
K6251-2004 carries out tension test in 500mm/ minutes with tensile speed, determines M50 (MPa) at room temperature.It will be obtained
As a result it is shown in table 1 so that comparative example 1 to be set as to 100 index.The value is bigger, then rubber composition is being used for Smaller load
Conveyer belt covering rubber layer in the case of, abrasion performance is more excellent.
<Loss angle tangent (tan δ)>
It is punched to strip (long 20mm × wide 5mm × thickness 2mm) using the rubber composition after each vulcanization by preparing
Test film, manufactured viscoplasticity spectrometer is made using Toyo Seiki, determines loss angle tangent (tan δ).It measures at 20 DEG C
Measuring temperature under, so that it 10% is stretched, with vibration frequency 10Hz applies the vibration of amplitude ± 2% and carries out.It will be obtained
As a result it is shown in table 1 so that comparative example 1 to be set as to 100 index.The value is smaller, then is being used to transport at a high speed by rubber composition
In the case of the covering rubber layer of the conveyer belt turned, abrasion performance is more excellent.
<Pik is worn away>
According to JIS K6264, the Pico abrasion machine manufactured using FERRY MACHINE CO. companies determines vulcanization
The pik of rubber composition afterwards is worn away.Determination condition is set as, load 44N, turntable rotary speed be 60 ± 2 times per minute,
Total rotating speed 80 times (replace carry out positive rotation 20 times and reverse rotation for 2 times 20 times respectively) of turntable.By obtained result with
By comparative example 1 be set as 100 index and be shown in table 1.The index is smaller, then by rubber composition for big load and low
In the case of the covering rubber layer of the conveyer belt of speed operating, abrasion performance is more excellent.
[table 1]
[table 2]
As each constituent shown in above-mentioned table 1, constituent as shown below is used.
·NR：Natural rubber (RSS#3)
·BR1：Butadiene rubber (Nipol BR1220, weight average molecular weight 460,000, the manufacture of ZEON companies of Japan, long-chain branch
Change index 9.5, Mooney viscosity 44, make butadiene rubber obtained from polymerizing butadiene in the presence of cobalt series catalyst)
·BR2：Butadiene rubber (Ubepol BR-360L, weight average molecular weight 560,000, the manufacture of Yu Buxingchan companies, long-chain
Branch index 7.3, makes butadiene rubber obtained from polymerizing butadiene at Mooney viscosity 54 in the presence of cobalt series catalyst)
·BR3：(Buna CB21, weight average molecular weight 770,000, the manufacture of LANXESS companies, long chain branching refer to butadiene rubber
Number 8.5, makes butadiene rubber obtained from polymerizing butadiene at Mooney viscosity 73 in the presence of Nd-based catalyst)
·CB1：Carbon black (SHOBLACK N110, N2 adsorption specific surface area 144m2/ g, dibutyl phthalate oil absorption
115ml/100g, SAF grades, the manufacture of CABOT JAPAN companies)
·CB2：Carbon black (SHOBLACK N234, N2 adsorption specific surface area 123m2/ g, dibutyl phthalate oil absorption
123ml/100g, ISAF-HS grades, the manufacture of CABOT JAPAN companies)
·CB3：Carbon black (SHOBLACK N326, N2 adsorption specific surface area 81m2/ g, dibutyl phthalate oil absorption
75ml/100g, HAF-LS grades, the manufacture of CABOT JAPAN companies)
·CB4：Carbon black (SHOBLACK N220, N2 adsorption specific surface area 111m2/ g, dibutyl phthalate oil absorption
115ml/100g, ISAF-LS grades, the manufacture of CABOT JAPAN companies)
·CB5：Carbon black (SHOBLACK N339, N2 adsorption specific surface area 88m2/ g, dibutyl phthalate oil absorption
121ml/100g, HAF-HS grades, the manufacture of CABOT JAPAN companies)
·U-PE：Ultra-high molecular weight polyethylene (MIPELONXM220, viscosity average molecular weigh 2,200,000,20 μm of average grain diameter, three
Well chemical company manufactures)
Age resister 6C：ANTIGENE 6C (sumitomo chemical company manufacture)
Zinc oxide：Zinc oxide JIS#3 (is just manufactured with chemical industrial company)
Stearic acid：Stearic acid YR (manufacture of You companies)
Paraffin：OZOACE-0015 (Japanese Jing La companies manufacture)
Aromatic oil：A-OMIX (three oiling industrial group manufactures altogether)
Vulcanization accelerator NS：NOCCELER NS-P (the emerging chemical industrial company's manufacture of imperial palace)
Sulphur：" GOLDEN FLOWER " OIL TREATED SULFUR POWDER (manufacture of He Jian chemical industrial companies)
According to result shown in table 1 it is found that embodiment 1 is compared with comparative example 1, the M50 of the rubber composition after vulcanization is big,
Loss angle tangent (tan δ) and pik wear away small, excellent wear resistance.Comparative example 1 and comparative example 2~5 are unable to get and wish
The effect of prestige.
If comparing embodiment 1, embodiment 2 and embodiment 3, understand that containing weight average molecular weight be 500,000~1,000,000
M50 and loss angle tangent after the vulcanization of the embodiment 2 and embodiment 3 of BR is better, for Smaller load and/or high speed
In the case of the covering rubber layer of the conveyer belt of operating, there is superior abrasion performance.Known to：The butadiene rubber wherein contained
The ratio between the weight average molecular weight of glue and Long-chain-branching index (LCB values) (weight average molecular weight/Long-chain-branching index) are 9.0 × 104's
Embodiment 3 be 7.6 × 104Embodiment 2 compare, the M50 and loss angle tangent after vulcanization are further excellent.
In addition, understanding：If comparing embodiment 6,10 and 11 and embodiment 1, when the N2 adsorption specific surface of carbon black (CB)
Product is 85~125m2/ g, when dibutyl phthalate oil absorption is 110~125ml/100g, the rubber composition after vulcanization
M50 biggers, loss angle tangent smaller, as a result, vulcanization after rubber composition abrasion performance it is better.
Symbol description
10 conveyer belts
1 enhancement layer
2 upper surfaces cover rubber layer
3 lower surfaces cover rubber layer
2a, 3a outer layer
2b, 3b internal layer
4 conveyor surfaces
Claims (5)
1. a kind of rubber composition for conveyor belt, contains：Rubber constituent, superelevation containing 45~100 mass % butadiene rubbers
Molecular weight polyethylene and carbon black,
The content of the ultra-high molecular weight polyethylene is 1.0~15.0 mass parts relative to 100 mass parts of the rubber constituent,
The content of the carbon black is 25~45 mass parts relative to 100 mass parts of the rubber constituent,
The N2 adsorption specific surface area of the carbon black is 85~160m2/ g, dibutyl phthalate oil absorption are 105~140ml/
100g。
2. rubber composition for conveyor belt according to claim 1, wherein the weight average molecular weight of the butadiene rubber is
500000~1,000,000.
3. rubber composition for conveyor belt according to claim 1 or 2, wherein the Weight-average molecular of the butadiene rubber
It is 5.5 × 10 to measure the ratio between Long-chain-branching index relative to the butadiene rubber4~16.6 × 104。
4. rubber composition for conveyor belt described in any one of claim 1 to 3, wherein the super high molecular weight is poly-
The viscosity average molecular weigh of ethylene is 500,000~4,000,000.
5. a kind of conveyer belt, has：Upper surface covers rubber layer, enhancement layer and lower surface and covers rubber layer,
At least described upper surface covering rubber layer has used conveyer belt building rubber compound according to any one of claims 1 to 4
Object.
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| JP2016-026137 | 2016-02-15 | ||
| JP2016026137 | 2016-02-15 | ||
| PCT/JP2017/005347 WO2017141909A1 (en) | 2016-02-15 | 2017-02-14 | Rubber composition for conveyor belts, and conveyor belt |
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| CN108602622A true CN108602622A (en) | 2018-09-28 |
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| JP (1) | JP6904328B2 (en) |
| CN (1) | CN108602622A (en) |
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| CN110615922A (en) * | 2019-10-12 | 2019-12-27 | 无锡宝通科技股份有限公司 | Super-wear-resistant tear-resistant conveyor belt covering rubber and preparation method thereof |
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| CN110406124A (en) * | 2019-07-18 | 2019-11-05 | 无锡宝通科技股份有限公司 | The preparation method of the conveyer belt of anti-rib abrasion |
| CN114395175B (en) * | 2021-12-24 | 2023-09-08 | 山东非金属材料研究所 | Wear-resistant rubber material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6395241A (en) * | 1986-10-09 | 1988-04-26 | Bridgestone Corp | Rubber composition |
| JPH0520466B2 (en) * | 1986-09-02 | 1993-03-19 | Gencorp Inc | |
| JP2002069241A (en) * | 2000-08-28 | 2002-03-08 | Bridgestone Corp | Rubber composition for belt, and belt |
| CN101535399A (en) * | 2006-11-10 | 2009-09-16 | 阪东化学株式会社 | Transmission belt and process for producing the same |
| CN101831092A (en) * | 2009-02-24 | 2010-09-15 | 固特异轮胎和橡胶公司 | Tire with tread of polybutadiene rubber |
| JP2015205961A (en) * | 2014-04-17 | 2015-11-19 | 株式会社ブリヂストン | Rubber composition for conveyor belt, and conveyor belt |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617348A (en) * | 1984-06-22 | 1986-01-14 | Yokohama Rubber Co Ltd:The | Polymer composition |
-
2017
- 2017-02-14 CN CN201780011054.XA patent/CN108602622A/en active Pending
- 2017-02-14 WO PCT/JP2017/005347 patent/WO2017141909A1/en active Application Filing
- 2017-02-14 AU AU2017221581A patent/AU2017221581B2/en active Active
- 2017-02-14 JP JP2018500124A patent/JP6904328B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0520466B2 (en) * | 1986-09-02 | 1993-03-19 | Gencorp Inc | |
| JPS6395241A (en) * | 1986-10-09 | 1988-04-26 | Bridgestone Corp | Rubber composition |
| JP2002069241A (en) * | 2000-08-28 | 2002-03-08 | Bridgestone Corp | Rubber composition for belt, and belt |
| CN101535399A (en) * | 2006-11-10 | 2009-09-16 | 阪东化学株式会社 | Transmission belt and process for producing the same |
| CN101831092A (en) * | 2009-02-24 | 2010-09-15 | 固特异轮胎和橡胶公司 | Tire with tread of polybutadiene rubber |
| JP2015205961A (en) * | 2014-04-17 | 2015-11-19 | 株式会社ブリヂストン | Rubber composition for conveyor belt, and conveyor belt |
Non-Patent Citations (2)
| Title |
|---|
| 孙本惠，金日光: "关于高分子支化度的测定及其对物理-机械性能影响的研究现状", 《北京化工学院学报》 * |
| 安徽省化工研究所: "《低压聚乙烯生产与操作》", 31 October 1976, 石油化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110615922A (en) * | 2019-10-12 | 2019-12-27 | 无锡宝通科技股份有限公司 | Super-wear-resistant tear-resistant conveyor belt covering rubber and preparation method thereof |
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| JPWO2017141909A1 (en) | 2018-12-06 |
| AU2017221581B2 (en) | 2019-03-14 |
| AU2017221581A1 (en) | 2018-08-30 |
| JP6904328B2 (en) | 2021-07-14 |
| WO2017141909A1 (en) | 2017-08-24 |
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