CN100554720C - Power belt - Google Patents
Power belt Download PDFInfo
- Publication number
- CN100554720C CN100554720C CNB2006100639010A CN200610063901A CN100554720C CN 100554720 C CN100554720 C CN 100554720C CN B2006100639010 A CNB2006100639010 A CN B2006100639010A CN 200610063901 A CN200610063901 A CN 200610063901A CN 100554720 C CN100554720 C CN 100554720C
- Authority
- CN
- China
- Prior art keywords
- power belt
- plasticizing agent
- rubber
- weight portions
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
A kind of power belt with main body, described main body have the side surface of an inboard, outside and side direction opposition.Described main body has at least one surface that cooperates with pulley, transmits with frictional property soil fertility between power belt and pulley.Described main body comprises the rubber that limits described at least one surperficial at least a portion.Described rubber is a kind of composition, is mixed by following at least component: a) the ethylene-alpha-olefin elastomer of 100 weight portions; B) solubility parameter of 10～25 weight portions is 8.3～10.7 (cal/cm
3)
1/2Plasticizing agent; And c) mineral filler of 60～110 weight portions.
Description
Technical field
The present invention relates to a kind of power belt, relate in particular to the power belt that a kind of body surfaces is made by rubber, described surface contacts with the pulley of interlock, thus between power belt and pulley frictional property ground transmission of power.
Background technique
The power belt that is for example used in the manufacturing motor car engines such as natural rubber, styrene/butadiene rubbers, chloroprene rubber by rubber is known.In recent years, the demand of energy saving causes the smaller and more exquisite of automobile making.The engine nacelle of making is more and more compacter, and consequently engine components are more and more tightr each other.Usually, the free space in the cabin is very little, so the temperature in the cabin has raise.
For example in the automobile cabin, the rubber of power belt solidifies also and is tending towards breaking prematurely in hot environment.
In addition, for effectively moving the motor that designs, the energy in running, tends to experience the obvious speed fluctuation.As a result, the tension force on the power belt is tending towards increasing, and has caused significant wearing and tearing, harmful noise or the like thus.
In addition, from the viewpoint of environment, the rubber that comprises halogen for example in the chlorobutadiene generation of ， dioxine (dioxine) be harmful to.Wait in expectation and make power belt with not halogen-containing rubber.
For fear of the adverse effect of halogen to environment, people have developed multiple other product.Already used ethylene-alpha-olefin rubber, for example ethylene propylene rubber (EPM) and ethylene-propylene-diene terpolymer rubber (EPDM) have demonstrated good heat resistance and relatively cheap.These polymer do not comprise halogen.
Use is by α, and the example of the elastomeric power belt of ethylene-alpha-olefin that the slaine of β-unsaturated organic acid strengthens is disclosed among the Japanese Patent No. JP-T-9-500930.The document is the open text of the Japanese of a PCT application.
Because the elastomeric water-wettable of ethylene-alpha-olefin is relatively poor, more refuses water than chloroprene rubber, cause the water between running medium power transport tape and the interlock pulley unevenly to move.There is not the local power belt of water with pulley directly to contact with interlock between the pulley surface at power belt.But, between power belt and pulley, there is the place of water, friction factor between the two reduces, thereby may form slippage between power belt and pulley.This will cause producing the stick-slip noise.
If have high friction factor between power belt and the interlock pulley, also may produce the noise of not expecting in the normal course of operation.Thus, expectation is controlled friction factor to avoid this situation usually.This realizes by adding oiling agent.But,, can cause harmful bonding abrasion usually if the oiling agent that adds is too much.
Summary of the invention
Formal at certain, the present invention relates to a kind of power belt with main body, described main body has the side surface of an inboard, outside and side direction opposition.Main body has at least one surface that cooperates with pulley, is used for frictional property soil fertility transmission between power belt and pulley.Described main body comprises the rubber that limits at least one surperficial at least a portion.Described rubber is a kind of composition, is mixed by following at least component and forms: a) the ethylene-alpha-olefin elastomer of 100 weight portions; B) solubility parameter of 10～25 weight portions is 8.3～10.7 (cal/cm
3)
1/2Plasticizing agent; And c) mineral filler of 60～110 weight portions.
In one form, described mineral filler comprises carbon black.
Described mineral filler can by carbon black and at least metal carbonate and metal silicate both one of make.
In one form, the nitrogen adsorption specific surface area of described carbon black is 65～125m
2/ g, the dibutyl phthalate oil absorption is 90～125cm
3/ 100g.
Described rubber composition can comprise that solubility parameter is 6.0～8.1 (cal/cm
3)
1/2Plasticizing agent.
Described solubility parameter is 6.0～8.1 (cal/cm
3)
1/2Plasticizing agent can be the oil plasticizing agent.
Described oil plasticizing agent can be paraffin plasticizing agent and cycloalkane plasticizing agent at least one of them.
In one form, described rubber composition is ethylene-alpha-olefin elastomer and the paraffin plasticizing agent of 3～20 weight portions and the mixture of one of them at least of cycloalkane plasticizing agent of 100 weight portions.
In one form, described solubility parameter is 8.3～10.7 (cal/cm
3)
1/2Plasticizing agent be ether-ester plasticizers.
In one form, described at least one surperficial friction factor is 0.3～0.6.
Described power belt can be one of V-type band and V-type rib band.
More generally, described power belt can be a kind of no cingulum.
Description of drawings
Fig. 1 has schematically shown power belt of the present invention;
Fig. 2 is the cross-section cutaway view that a kind of concrete form according to the present invention is a V-type rib band;
Fig. 3 is the cross-section cutaway view according to the another kind of form of V-type rib band of the present invention;
Fig. 4 and Fig. 3 are similar, are the views of another improved form of V-type rib band of the present invention;
Fig. 5 has schematically shown the system that carries out heat-resisting endurance test on power belt.
Fig. 6 has schematically shown the system that carries out friction test on a power belt.
Embodiment
Schematically shown among Fig. 1 according to power belt 10 of the present invention.Represent that with schematic form power belt 10 is in order to comprise the in fact different banding patterns and the structure of unlimited amount.Power belt 10 can be V-type band, V-type rib band etc., can in fact use on the distinct device of unlimited amount in various industry.As an example, described power belt 10 can be used in the automobile.Preferably, described power belt 10 is a kind of no cingulums with opposite side surface 12,14, and described opposite side surface 12,14 cooperates with the complementary surface 16,18 of interlock on the pulley 20.Described surperficial 12,14 and 16,18 actings in conjunction, the frictional property soil fertility is transmitted between power belt 10 and pulley 20.
A kind of particular form that has shown power belt 10 among Fig. 2.Power belt 10 among Fig. 2 is a kind of vertically unlimited V-type rib band that extends main body 22 that has, longitudinal direction such as double-head arrow 24 expressions.Described main body 22 has the inboard 26 and the outside 28.
Being formed with a plurality of ribs on compressing section 40, is three (3) rib 44a, 44b, 44c in the present embodiment.Rib 44a, 44b, 44c respectively have truncate triangular shaped.Rib 44a as an example have with pulley 20 on complementary surface 16a, opposite side that 18a cooperates surface 12a, 14a.Rib 44b, 44c in an identical manner with pulley 20 actings in conjunction.Described rib 44a, the horizontal equi-spaced apart of 44b, 44c, and extend continuously along the length direction of power belt 10.
A kind of preferred form of load-bearing spare 36 be by PETG (PET) fiber, PEN (polyethylene naphthalate) (PEN) fiber, polytrimethylene terephthalate (PTT) fiber. polybutylene terephthalate (PBT) fiber, polyparaphenylene's benzodiazole (polyparaphenylene benzobisoxazole) be the rope of twisting thread of manufacturings such as fiber, polyamide fiber, glass fibre, aramide-fibre (PBO).
Preferably, load-bearing spare rope 36 bonded processing.In one form, one section untreated rope is dipped in the jar that comprises a kind of pretreatment fluid, and described pretreatment fluid is one of epoxide and isocyanate compound.The rope 36 that immerses then keeps 30～600 seconds to realize drying by the kiln furnace of a temperature maintenance at 160 ℃～200 ℃.Then, dry rope 36 is dipped in the jar of the Bond liquid that comprises a kind of RFL of containing liquid constituent.Rope 36 directly remains on stretching/heat fixation container handling of 210 °～260 ℃ by a temperature then, thereby stretches-1%～3% with 30～600 seconds by this container.Obtain the rope 36 of stretch processing thus.Isocyanate compound in the pretreatment liquid can be for example 4,4 '-methyl diphenylene diisocyanate, toluene 2,4 vulcabond, polymethylene polyphenyl vulcabond, hexamethylene diisocyanate and poly-aryl PIC (for example, trade mark is the commodity of PAPI).For example toluene or methyl ethyl ketone etc. mix described isocyanate compound with organic solvent.
Also can use blocked polyisocyanate, wherein said blocked polyisocyanate is by with above-mentioned isocyanate compound and end-capping reagent, and for example reactions such as phenol, the tertiary alcohol or secondary alcohol form the NCO with blocked polyisocyanate.
For example, suitable epoxy resin is the reactor product of polyatomic alcohol polybasic alcohol or PAG and halogen-containing epoxide and the reactor product of polyhydric phenols and halogen-containing epoxide, polyatomic alcohol polybasic alcohol for example is ethylene glycol, glycerine and pentaerythritol, PAG for example is a polyethyleneglycol, halogen-containing epoxide for example is an epichlorohydrin, and polyhydric phenols for example is resorcinol, two (4-hydroxy phenyl) dimethylmethane, phenolic resin or resorcinol-formaldehyde resin.For example toluene or methyl ethyl ketone etc. mix described epoxide with organic solvent.
The RFL treatment fluid is mixed by the elementary condensate and the rubber latex of resorcinol and formaldehyde.In this example, the mol ratio of preferred resorcinol and formaldehyde is 1: 2-2: 1, and so that the cohesive force of expection to be provided.When mol ratio during less than 1: 2, excessive three-dimensional reaction takes place in formaldehyde-resorcinol resin.On the other hand, when mol ratio during greater than 2: 1, formaldehyde and resorcinol may not can fully react, and cohesive force reduces unfriendly.
Suitable rubber latex is the terpolymer that ethene-butadiene-vinylpyridine is arranged, nitrite rubber, chloroprene rubber and the nitrite rubber etc. of hydrogenation.
The elementary condensate of formaldehyde-resorcinol and the solid content mass ratio of rubber latex are preferably 1: 2-1: 8.In this scope, has suitable cohesive force.If ratio is less than 1: 2, the resin content of formaldehyde-resorcinol increases, and RFL coating hardening as a result causes the deterioration of dynamic adhesion.When mass ratio surpassed 1: 8, the resin content of formaldehyde-resorcinol reduced, RFL coating possibility deliquescing as a result, and the cohesive force that causes forming reduces unfriendly.
Can in RFL liquid, add vulcanizing accelerator or vulcanzing agent.Suitable vulcanizing accelerator is the vulcanizing accelerator of sulfur-bearing, 2-mercaptobenzothiazole (M) and salt thereof (zinc salt for example particularly, sodium salt or encircle amine salt), thiazole, sulfenamide, thiuram, dithiocar-bamate etc., thiazole for example be dibenzothiazyl-disulfide (dibenzothiazyldisulfide) (DM), sulfenamide for example is that the N-cyclohexyl-2-[4-morpholinodithio base sulfenamide (N-cyclohexyl-2-benzothiazyl sulfenamide) (CZ), thiuram for example is a sulfuration tetra methylthiuram (TS), tetramethylthiuram disulfide (TT) or dipentamethylene thiuram tetrasulfide (TRA), dithiocar-bamate for example is di-n-butyl dithiocarbamate sodium (TP), zine dimethyldithiocarbamate (PZ), diethyl-dimethyl zinc dithiocarbamate (EZ), or the like.
In addition, sulphur, metallic oxide (zine oxide, magnesium oxide and lead oxide) and organic peroxide etc. can be used as vulcanzing agent.Vulcanzing agent and above-mentioned vulcanizing accelerator are used in combination.
Making the canvas that covers canvas layer 42 can be the fibre substrate that is selected from woven fabric, knitted fabric, supatex fabric etc.The useful fiber material is known, and what for example be suitable for has: a) natural fibre, for example cotton and hemp; B) inorfil, for example steel fiber and glass fibre; And c) organic fiber, for example polyamide, polyester, polyethylene, polyurethane, polystyrene, polyvinylfluoride, allyl, polyvinyl alcohol, all aromatic polyester and aromatic copolyamide.For woven fabric, be to prepare by yarn being carried out tabby weave, twill weave, satin weave operation or other suitable technology.
The preferred conventional method of using will cover in the canvas layer 42 immersion RFL liquid.After immersing RFL liquid, use rubber that its friction is polished.Perhaps alternatively, described covering canvas layer 42 equally can be in a kind of liquid dipping treatment, this liquid obtains by rubber is dissolved in a kind of solvent.Carbon black can be mixed with described RFL liquid and obtain black.Perhaps alternatively, the conventional surfactants that adds 0.1～5% quality.
The compression layer 30 that side surface 12,12a, 14,14a expose is by the rubber manufacturing, and described rubber is a kind of composition, is preferably mixed by following component: a) the ethylene-alpha-olefin elastomer of 100 weight portions; B) solubility parameter of 10～25 weight portions is 8.3～10.7 (cal/cm
3)
1/2Plasticizing agent; And c) mineral filler of 60～110 weight portions.
The water-wettable that this structure makes frictional force transmit the surface strengthens, the result, even if under the situation that water flows into, the bonding of described transport tape and pulley fitting surface is good.Said composition also helps the quietness of transport tape operation.
The mineral filler of sneaking into 60～110 weight portions has improved the expection migratory of plasticizing agent, thereby described plasticizing agent can be used as oiling agent.The result can obtain suitable friction factor, and the noise that produces in the running also can be stood.
Simultaneously, this rubber composition helps to control be full of cracks and the bonding abrasion on the pulley fitting surface, thereby prolongs the working life of transport tape.
And described ethylene-alpha-olefin rubber does not comprise the halogen that tends to environmental hazard.
The copolymer of preferably a kind of ethene of described ethylene-alpha-olefin elastomer and alhpa olefin (propylene, butylene, hexene (hexane) or octene) or the terpolymer of ethene and above-mentioned alhpa olefin and a kind of non-conjugated diene.Described ethylene-alpha-olefin elastomer can be ethylene-propylene rubber (EPM) or ethylene-propylene-diene copolymer (EPDM) etc.As the diene composition, have the non-conjugated diene of 5～15 carbon atoms, for example ethylidene norbornene, bicyclopentadiene, 1,4 hexadiene, cyclo-octadiene and methene norbornene are suitable.
The solubility parameter of described plasticizing agent (SP value) is 8.3～10.7 (cal/cm
3)
1/2, greater than the elastomeric solubility parameter of ethylene-alpha-olefin (about 8.0 (cal/cm
3)
1/2).By mixing the plasticizing agent of SP value greater than the elastomeric SP value of described ethylene-alpha-olefin, rubber covering oozes and moves phenomenon, thereby friction factor is reduced in time during drying.This has also solved the fashionable homogeneous wettability of current, thereby makes stable friction factor.Might suppress stick-slip phenomenon when in addition, it is as lubricant.Described SP value is determined as follows: SP=d ∑ G/M (d: density, G: molecular attraction constant, M: molecular weight).
Solubility parameter is 8.3～10.7 (cal/cm
3)
1/2The suitable examples of plasticizing agent be ethers, ester class, ether-ether class, phthalic acid derivatives class, adipic acid derivative class, cebacic acid derivative class, trihemellitic acid derivative class and phosphoric acid derivatives class plasticizing agent.In these plasticizing agent, preferred ether-ether class plasticizing agent moves effect and has good water-wettable because it shows suitable oozing.
As mentioned above, the ethylene-alpha-olefin elastomer of per 100 weight portions mixes the plasticizing agent of 10～25 weight portions.If the amount of mixing is lower than 10 weight portions, plasticizing agent may not reach the required amount in described transport tape surface that covers.The result is difficult to guarantee uniform water-wettable.And described plasticizing agent may be not enough to effectively as oiling agent.
On the other hand, when the amount of mixing surpassed 25 weight portions, surface friction coefficient may reduce a lot, and wear resistance also may weaken unfriendly.In order to prevent the volatilization under the hot environment, the mean molecule quantity of preferred plasticizer is more than 300 or 300.
Carbon black, metal carbonate, metal silicate etc. are the mineral fillers that is suitable for.Because the high strength and the strengthening effect of carbon black, carbon black is used in expectation at least in described filler.That is to say that described carbon black helps to have good wear resistance.
The preferred nitrogen adsorption specific surface area (N that uses
2SA) be 20～150cm
2/ g, dibutyl phthalate (DBP) oil absorption are 50～160cm
3The carbon black of/100g.More preferably, be 65～125cm when selecting the nitrogen adsorption specific surface area
2/ g, dibutyl phthalate oil absorption are 90～125cm
3During the carbon black of/100g, can obtain excellent abrasion resistance.It is 8.3～10.7 (cal/cm that preferred rubber composition comprises a large amount of solubility parameters
3)
1/2Plasticizing agent.Therefore, when lacking carbon black, possible wear resistance is low and be easy to take place bonding abrasion.By using nitrogen adsorption specific surface area (N
2SA) be 65～125cm
2/ g, dibutyl phthalate oil absorption are 90～125cm
3The carbon black of/100g can obtain excellent abrasion resistance as mineral filler, and bonding abrasion is reduced.Described nitrogen adsorption specific surface area refers to the specific surface area of carbon black, measures according to JIS K 6217-2.In addition, described DBP oil absorption (dibutyl phthalate oil absorption) is measuring of a kind of structure, measures according to JIS K 6217-4.
For metal carbonate, can use calcium carbonate.As for metal silicate, can use calcium silicate, lithium aluminium silicate, alumina silicate, magnesium silicate etc.For alumina silicate, can use clay.For magnesium silicate, can use talcum.For lithium aluminium silicate, can use mica.These can use separately or be used in combination.The most important thing is, need calcium carbonate and rubber to have good compatibility, and not to mechanical property for example intensity have a negative impact.
The average particulate diameter of preferred mineral filler is 0.01～3.00 μ m.If average diameter surpasses 3.00 μ m, the serviceability of transport tape had negative effect.If the average particulate diameter of described filler is lower than 0.01 μ m, the bad dispersibility of rubber, rubber can not have the performance of homogeneous as a result.
Be added with the mineral filler of 60～110 weight portions in the ethylene-alpha-olefin elastomer of preferred per 100 weight portions.If be lower than 60 weight portions, the migratory of plasticizing agent may be insufficient.And anti-bonding abrasion may be insufficient.On the other hand, if mineral filler surpasses 110 weight portions, flex resistance variation so.In addition, from intensity, wear resistance and reduce the viewpoint that noise produces, under situation, be added with the carbon black of 30～100 weight portions and the metal carbonate (metalcarbon) and/or the metal silicate of 10～80 weight portions in the ethylene-alpha-olefin elastomer of preferred per 100 weight portions with carbon black and metal carbonate and/or metal silicate mixing manufacturing mineral filler.
Use comprises that the organic fill of metal carbonate and/or metal silicate has also obtained good intensity.Wear resistance has improved, and the noise that vibration simultaneously causes also has been subjected to inhibition.
With solubility parameter is 6.0～8.1 (cal/cm
3)
1/2Plasticizing agent and the rubber composition mixing energy transport tape that obtains to have the expection serviceability.Heat resistance also may be enhanced.Preferably, the little 8.0 (cal/cm that are about of the elastomeric solubility of ethylene-alpha-olefin
3)
1/2By being 8.3～10.7 (cal/cm with a) solubility parameter of 10～25 weight portions
3)
1/2Plasticizing agent, described solubility parameter is greater than the elastomeric solubility parameter of described ethylene-alpha-olefin; And b) mineral filler of 60～110 weight portions mixes, and further to use solubility parameter be 6.0～8.1 (cal/cm
3)
1/2Plasticizing agent, described solubility parameter is equal to or less than the elastomeric solubility parameter of ethylene-alpha-olefin, water-wettable on pulley fitting surface 12,14,12a, the 14a improves, even and if also be enhanced, thereby help the realization of quiet operation in the bonding between described transport tape and the pulley under the situation that water flows into.Simultaneously, a) suitable oozing taking place moves; B) noise that produces in the running may be suppressed as oiling agent because of plasticizing agent; And c) can prevent breaking on limited slip wheel fitting surface 12,14,12a, the 14a, thereby help the serviceability of described transport tape.
For solubility parameter is 6.0～8.1 (cal/cm
3)
1/2Plasticizing agent, in order to improve heat resistance, noise suppression and processability, be suitable for using the oil plasticizing agent.Preferred paraffin plasticizing agent and/or the cycloalkane plasticizing agent of using.The paraffin plasticizing agent and/or the cycloalkane plasticizing agent of ethylene-alpha-olefin rubber mix 3～20 weight portions of preferred per 100 weight portions.If the weight portion that uses is less than 3, the improvement of serviceability is not obvious.If the weight portion that uses surpasses 20, anti-bonding abrasion possible deviation.
Organic peroxide as crosslinking agent is mixed with this rubber composition.As organic peroxide; dicumyl peroxide, di-t-butyl peroxide, tert-butyl peroxide cumyl, benzoyl peroxide base, 1; 3-two (t-butyl peroxy isopropyl) benzene, 2; 5-dimethyl-2; 5-two (t-butyl peroxy) hexin-3,2,5-dimethyl-2,5 (benzoyl peroxide) hexane and 2; 5-dimethyl-2, single (t-butyl peroxy) hexane of 5-is suitable for.Consumption with 0.5～8 weight portion in the polymeric components of the preferred use separately of organic peroxide or per 100 weight portions uses as mixture.
In this rubber composition, the polymeric components of preferred per 100 weight portions comprises the N of 0.5～13 weight portion, N '-metaphenylene maleimide and/or quininie dioxime.N, N '-metaphenylene dimaleimide and/or quininie dioxime are as crosslinking coagent.When being less than 0.5 weight portion, using effect is not obvious.When surpassing 13 weight portions, tear edge and cohesive force may reduce rapidly.
Select N, N '-metaphenylene dimaleimide uses as crosslinking coagent, and crosslink density increases, the wearability height, and the difference between the load transmittability is little under inflow water and the environmental drying situation.In addition, when selecting to use quininie dioxime, generally fine to the cohesiveencess of fibre substrate.
About quininie dioxime, parabenzoquinone dioxime, right preferably, to '-hexichol quininie dioxime and tetrachloroquinone poly-(right-the dinitro benzoquinones) etc.From the viewpoint of adhesiveness and crosslink density, preferred benzoquinones dioxime, parabenzoquinone dioxime and right for example, to '-the hexichol quininie dioxime.
Except that this above-mentioned composition, also can use material and the component used usually in the blend glue, for example short fibre 46, antioxidant, stabilizer, processing aid, coloured material etc.The mixed method of these components and rubber composition is unqualified.Only give one example, these components can use conventional apparatus such as Banbury Mixing roll, dispersion kneader to mediate.
Preferred yielding rubber layer 32 is made by rubber composition, and described rubber composition for example is that independent ethylene-alpha-olefin rubber or ethylene-alpha-olefin rubber mixes mutually with another kind of secondary rubber composition/composition.For example, secondary rubber composition/composition can be butadiene rubber (BR), styrene butadiene rubbers (SBR), nitrite rubber (NBR), hydrogenated nitrile rubber (H-NBR), chloroprene rubber (CR), butyl rubber (IIR) and natural rubber (NR) at least one of them.Certainly, as mentioned above, can use identical rubber composition.
The structure of V-type rib band can be with shown in Figure 2 different.As an example of this variation, V-type rib band does not need the yielding rubber layer 32 shown in Fig. 2.Can remove and cover canvas layer 42, the outer surface 28 of main body 22 is exposed.Other concrete form of improved V-type rib band shows in Fig. 3 and Fig. 4, describes below.
The V-type rib band 10 ' that has shown a kind of improved form among Fig. 3.Described transport tape 10 ' has the main body of being made up of tension layer 48, yielding rubber layer 32 ' and compression layer 30 ' 22 '.Main body 22 ' has the inboard 50 and the outside 52.The outside 52 of main body 22 ' has the fiber rubber shoe latex layer 54 that adds thereon, and it is by rubber composition and fibrous in it.
Load-bearing spare 36 ' embeds in the described main body 22 '.Described load-bearing spare 36 ' part is positioned at yielding rubber layer 32 ', part is positioned at tension layer 48.
Be shaped in the compression layer 30 ' three rib 44a ', 44b ', 44c ' have roughly same structure with rib 44a, 44b, 44c on the transport tape among Fig. 2 10.Described rib 44a ', 44b ', 44c ' extend continuously at longitudinal direction, and equi-spaced apart in a lateral direction.
Nominally the short fibre 56 in the compression layer 30 ' is consistent with the shape of rib 44a ', 44b ', 44c ', in fact the shape with the rib of going up exposed surface 58 near compression layer 30 ' is more consistent.Nominally, should recognize that equally fiber 56 can be orientated, so that their length is calibrated along horizontal direction although the fiber 56 that shows in the compression layer 30 ' is consistent with the shape of rib.
Preferably do not comprise any short fibre in the tension layer 48 of application fiber rubber shoe latex layer 54 on it.But, also be to be appreciated that in tension layer 48 and can use fiber.
The V-type rib band 10 that has shown a kind of further improved form among Fig. 4 ".Described V-type rib band 10 " have identical global shape with aforementioned transport tape 10,10 '.Main body 22 " by tension layer 48 " and compression layer 30 " form.Tension layer 48 " be applied in described compression layer 30 " the outside 60.
Load-bearing spare/rope 36 " embed compression layer 30 " in and with tension layer 48 " contact.At tension layer 48 " be embedded in short fibre 62, described short fibre 62 is in described tension layers 48 " in random alignment.
Fiber rubber shoe latex layer 64 is applied in and exposes on the rib surface 66.
With 10 " be not have layer to be applied in main body 22 with the band difference described in the embodiment of front " outer surface 68 on.But, at tension layer 48 " in have short fibre 62, and do not embed fiber in the corresponding tension of other embodiment layer.
Can be arranged to recessed/protruding style on the outer surface 68, to avoid described outer surface/rear surface 68 to drive corresponding pulleys or to produce extraordinary noise during by described pulley drive.Described recessed/protruding style can limit by layer 70, described layer 70 can be knitted fabric, woven fabric, bamboo shading woven fabric etc.The woven fabric style is wherein most preferred.
Described fiber 62 can be by polyester, aromatic copolyamide, nylon, cotton etc. separately or be mixed and made into.Make described tension layer 48 " and compression layer 30 " rubber can be same with the used rubber phase of aforementioned transport tape 10,10 ' main body.
Although fiber 62 random orientations that show should be appreciated that also and can be orientated by the mode that makes its length along the lateral/transverse calibration.Random orientation helps to resist the rubber that is caused along a plurality of direction externally applied forces and tears and ftracture.If the short fibre that uses has curved section, for example by the rolling curved section of making, multidirectional external force of tending to tear rubber or produce cracking will be resisted.
In the present embodiment, there is not discrete yielding rubber layer.Described load-bearing spare 36 " mainly be embedded in compression layer 30 " in, but at described compression layer 30 " and described tension layer 48 " between also exist at the interface.For at described load-bearing spare rope 36 " and main body 22 " rubber between produce enough cohesive forces, preferred described tension layer 48 " and described compression layer 30 " lack reinforcing fiber in one of them at least.
If the outer surface of described transport tape is used for power transmission, rubber wherein can use rubber composition manufacturing of the present invention.Pulley cooperates side surface also to consider to use rubber composition of the present invention.
For all transport tapes 10,10 ', 10 described herein " the frictional property surface of transmitting external force, comprise rib side surface and outer surface on the transport tape, preferably its friction factor is in 0.3～0.6 scope.If friction factor less than 0.3, may be difficult to transmission of drive force effectively.If friction factor greater than 0.6, undesirable noise may occur.Described friction factor is hereinafter described this to some extent by experimental measurement.
Producing the whole bag of tricks of transport tape of the present invention also describes hereinafter.Should be appreciated that these methods in fact only are examples, other method consistent with notion of the present invention is also contained among the present invention.
The thin slice of making tension layer and buffering rubber layer be wrapped in cylindrical assembly drum around.Load-bearing spare/rope twines around its spiral.Then, the thin slice that limits compression layer is wrapped in drum goes up not sulfuration cover of manufacturing, thereafter with its sulfuration.Described sulfuration cover is arranged around active at interval and driven roller, and is driven under predetermined tension.One spinning mill moves relative to above-mentioned cover, forms 3～100 grooves along the length of described cover on compression layer after touch with described socket.Produce the independent rib that the pulley fitting surface is arranged on it like this.Then, will overlap with initiatively and driven roller be separated, around another set of active and driven roller arrangement, and be driven along ring track.Then, described cover is cut to predetermined width, to form independent V-type rib band with cutting machine.
Method 2
The independent rubber sheet that limits compression and buffering rubber layer is wrapped on the cylindrical assembly drum.Assembly drum has the profiling circumferential surface, the shape of the expection end shape complementation of rib on its transport tape that is designed to and makes.Described thin slice is placed on the appropriate location, and spiral twines load-bearing spare/rope, twines another thin slice that limits the tension layer then, makes not sulfuration cover thus.To overlap sulfuration then, and cover will be pressed against to be contoured to simultaneously and make the compression lamella consistent on the type drum surface with it.Then, will vulcanize cover moves apart from described assembly drum.Can carry out polishing treatment to the rib surface when needing.Then, described cover is cut to predetermined width, to form independent V-type rib band.
Method 3
The independent thin slice of making tension layer and buffering rubber layer is wrapped on the flexible shroud, and described flexible shroud is placed on cylindrical assembly drum top.Load-bearing spare/rope twines around its spiral.Then, the thin slice that limits compression layer is wrapped in drum and goes up not sulfuration cover of manufacturing.Flexible shroud is expanded, described sulfuration cover is pressed against on the external mold with contoured surface, the expection end shape complementation of rib on described contoured surface and the transport tape of making.Apply this outward pressure, carry out sulfidation.Then, will vulcanize cover and separate, and when needed polishing treatment be carried out on the rib surface.Then, described cover is cut to predetermined width, to form independent V-type rib band.
Method 4
The rubber sheet that limits compression layer is wrapped in makes the first sulfuration cover on the flexible shroud, described flexible shroud is assemblied on the cylindrical assembly drum.Flexible shroud is expanded, described not sulfuration cover is pressed against on the external mold with contoured surface, the rib shape of described contoured surface and expection adapts.
The thin slice that limits tension layer and buffering rubber layer is wrapped on the internal mold.Spiral twines load-bearing spare/rope to form the independent second sulfuration cover.Described flexible shroud expands, make second sulfuration cover radially outward be pressed against on the external mold with shaping compression layer.Then, described two are overlapped connection and carry out vulcanizing treatment.The cover of sulfuration can be separated afterwards and as required polishing treatment is carried out on the rib surface on it.Then, described band is cut to predetermined width, to form independent V-type rib band.
In some structure, the compression layer of V-type rib band can be made by separating layer, and described separating layer refers to the internal layer and the skin that expose.Can be prefabricated into described separating layer, coiled type element twines then, and perhaps, coiled type element twines successively respectively.Because method 1 middle rib is the polishing moulding, the internal layer at rib top exposes, and the sidepiece of rib or the skin of bottom expose, and therefore, when compression layer adopts separating layer, preferably only uses said method 2,3 or 4.
In V-type rib band shown in Figure 4, there is not discrete yielding rubber layer, except using described yielding rubber thin slice/layer, said method can carry out as mentioned above.
In V-type rib band shown in Figure 3, nominally fiber 56 is consistent with the shape of rib, preferred using method 2,3 and 4 is made.For the structure of fiber in the compression layer along the alignment of side direction orientation, preferred using method 1.
The specific embodiment of transport tape of the present invention (inventive embodiments) is described below, and has carried out the comparison of performance/characteristic with other line belt (comparative example).
Described V-type rib band is all made by load-bearing spare/rope, and described load-bearing spare is by in polyester fibre manufacturing and the embedding yielding rubber layer.Two cotton canvas with rubber coating are laminated on the outside of yielding rubber layer.Three ribs are formed on separately the compression rubber layer, and described compression rubber layer is applied in the inboard of yielding rubber layer.These ribs are equi-spaced apart and extend along the whole length of described transport tape in the horizontal.
Described compression layer is made by rubber composition, and is as shown in table 1 below:
Table 1
* 1: ethylene contents: 58wt%, diene component: ethylidene norbornene
* 2: short yarn cutting: the 3mm of nylon
* 3: " zinc flower ", the product of Seido Kagaku Kogyo K.K.
* 4: " ADEKACIZER ", the product of Adeka company, the SP value: 8.5, molecular weight: 500
* 5: " DOS ", Kyowa Hakko Kogyo Co., the product of Ltd., the SP value: 8.5, molecular weight: 430
* 6: " Diana processing oil ", Idemitsu Kosan Co., the product of Ltd., SP value: 7.5
* 7:N, N-metaphenylene dimaleimide
* 1 of 8:40wt%, the calcium carbonate of 3-two (t-butyl peroxy isopropyl) benzene and 60wt%
Use the Banbury mixing machine to mediate, use the calender roll roll-in.Use the nitrogen adsorption specific surface area of HAF carbon black to be 83m
2/ g, the dibutyl phthalate oil absorption is 102cm
3/ 100g.Short fibre is all arranged in each compression layer, and the length of described short fibre is along laterally calibration.The rubber compounding that each yielding rubber layer is removed short fibre by the rubber composition shown in the table 1 is made.The rubber composition that has shown in the table 1 prescription stands 30 minutes compacting under 165 ℃ crosslinked.Characteristic to the cross-linked rubber that generates is assessed.The hardness of cross-linked rubber (JIS-A) is measured according to JIS (JIS) K6253.Measure according to JIS K6251 with the breaking elongation (EB) on the fiber orientation directions Vertical direction.The result is illustrated in the following table 2.
Table 2
* 4: " ADEKACIZER ", the product of Adeka company, the SP value: 8.5, molecular weight: 500
* 5: " DOS ", Kyowa Hakko Kogyo Co., the product of Ltd., the SP value: 8.5, molecular weight: 430
* 6: " Diana processing oil ", Idemitsu Kosan Co., the product of Ltd., SP value: 7.5
Transport tape is made as follows: the cotton canvas of two coats with rubber and a yielding rubber layer twine around flat cylindrical assembly drum.Then, spiral twines load-bearing spare/rope, twines compression rubber layer in the above.Then on described compression rubber layer, use the sulfuration sheath.There is the assembly drum of sheath to be placed in the container above and cures.With grinding machinery the compression rubber layer that sulfuration puts is ground to form independent rib, cut then to predetermined width, to produce moulding V-type rib band.
Continuous heat resistance, anti-bonding abrasion and the friction test of carrying out as described below.The continuous heat resistance test is carried out with the system shown in Fig. 5 72.Described system 72 is made up of driving wheel 74, follower 76 and idle pulley 78 and tension pulley 80.Describedly take turns 74,76,78,80 around parallel axes 82,84,86,88 rotation, described axle is substantially parallel each other.The diameter of driving wheel 74 is 120mm, and the diameter of follower 76 is 120mm, and the diameter of idle pulley 78 is 85mm, and the diameter of tension pulley 80 is 45mm.
Underproof transport tape B takes turns 74,76,78,80 and arranges around described, as shown in the figure.Described transport tape B is 90 ° around the winding angle θ of tension pulley 80.Described transport tape B is 120 ° around the winding angle θ 1 of idle pulley 78.Described transport tape B is driven the direction rotation driving of wheel 74 along arrow 90, applies a load on it.Ambient temperature is 120 ℃.The rpm of driving wheel 74 (RPM) is that the belt tension of 4900,3 roots is 57 kilogram forces.The load of effect is 12 static pressure (PS) on the follower 76.Described transport tape B turned round 500 hours under above-mentioned operating mode.Write down and produced on load-bearing spare/rope for six (6) working times when locating crackle.
When carrying out the test of anti-bonding abrasion, every V-arrangement rib band is arranged around the idle pulley that the driving wheel of diameter 120mm, follower that diameter is 120mm and diameter are 45mm.Transport tape at room temperature turns round.The load that acts on from the kinetic friction cabin is 2 horsepowers, and the test mass that acts on the idle pulley is 102 kilogram forces.Driving wheel was with 800 rev/mins of runnings 24 hours.Write down whether bonding abrasion is arranged on the described transport tape.
In order to carry out friction test, used system shown in Figure 6 98.Length is that the V-type rib band with three (3) individual ribs of B1 places on the stainless steel guide wheel 100, and diameter is that the pulley groove angle of the guide wheel of 60mm is 36 °, and pulley groove end pitch is 3.56mm.The winding angle θ 3 of described transport tape section B1 is 90 °.Supporting 104 is fixing relatively for the end 102 of described transport tape section B1.The counterweight 106 that produces 1.75 kilogram forces on 3 roots is suspended on the other end 108 of described transport tape section B1.The dynamometry evaluation that measurement produces during along the direction rotation guide wheel 100 of arrow 110 with 42 rev/mins speed is with the pull side tension force T1 of detected transmission band section B1 and the loose end tension force T2 (1.75 kilogram force) of described transport tape section B1.Can determine coefficientoffriction=(1/2 π) ln (T1/T2) by warp tension ratio T1/T2.Describedly take turns the postrun test time and be recorded as 5～30 seconds, T1 gets its maximum value.When measuring friction factor, the situation of wet (WET) all will be estimated when system was done (DRY) and flows into water with 60 cubic centimetres/minute flow.
The result of continuous heat resistance test, the test of anti-bonding abrasion and friction test represents in the superincumbent table 2.
For comparative example 1, the plasticizing agent with big SP value does not show good mixing.The friction factor of doing under the wet two states is all very high, and the difference of doing between the wet two states is big equally.
In comparative example 2 and 7, big SP value plasticizing agent and little SP value plasticizing agent are mixed.But the difference between the dry and wet state is still very big, and friction factor is equally also very high.Therefore, noise almost there is not inhibitory action.
In comparative example 3, with the big SP value of suitable quantity blend plasticizing agent, but the blending amount of mineral filler is less.Plasticizing agent does not fully ooze and moves as a result, and the friction factor under the consequently dried state does not reduce satisfactorily.In addition, the bonding degree height in the bonding abrasion test.
In comparative example 4, owing to only mixed a spot of big SP value plasticizing agent, the reduction of friction factor is insufficient under the dried state.In addition, the difference of friction factor is bigger under the dry and wet state.
In comparative example 5, owing to mixed a large amount of big SP value plasticizing agent, the reduction of friction factor is very big under the dry and wet state.Simultaneously, anti-bonding abrasion also descends very big.
For comparative example 6, add big SP value plasticizing agent and little SP value plasticizing agent, addition is greater than the addition in comparative example 2 and 7.Difference under the dry and wet state is little, but friction factor is low relatively, and is also insufficient.In addition, observed the generation of bonding abrasion.
On the other hand, for the embodiment of the invention, continuous heat resistance and anti-bonding abrasion do not weaken.In addition, the friction factor under the dried state is kept lower, but compares with the situation under the dried state, and the friction factor under the wet condition does not obviously reduce.That is to say that the difference of friction factor is little under the dry and wet state.
In the heat-resisting running test of inventive embodiments 4 and 5, the whole test cycle does not all crack.Continuous heat resistance further improves.
On the other hand, in inventive embodiments 1 and 3, produced crackle in the heat-resisting running test.But continuous heat resistance is good within the acceptable range, and other usability is good too simultaneously.
Can determine by test, even if transport tape of the present invention described herein also has high durability and good power transmission characteristic under the situation that water flows into.Described transport tape can be operated under the situation that does not produce excess noise, and shows good anti-flexural fatigue, heat-resisting and wear resistance.
Specific embodiments above-mentioned openly be used to the generalized concept of explaining that the present invention comprises.
Claims (9)
1. power belt comprises:
Main body with side surface of an inboard, outside and side direction opposition,
Described main body has at least one surface that cooperates with pulley, transmits with frictional property soil fertility between power belt and pulley,
Described main body comprises the rubber that limits described at least one surperficial at least a portion, and described rubber is a kind of composition, is mixed by following component: a) the ethylene-alpha-olefin elastomer of 100 weight portions; B) solubility parameter of 10～25 weight portions is 8.3～10.7 (cal/cm
3)
1/2Plasticizing agent; And c) mineral filler of 60～110 weight portions;
Wherein said mineral filler comprises carbon black; And the nitrogen adsorption specific surface area of wherein said carbon black is 65～125m
2/ g, the dibutyl phthalate oil absorption is 90～125cm
3/ 100g; With described at least one surperficial friction factor be 0.3～0.6.
2. power belt according to claim 1 is characterized in that: described mineral filler also comprises metal carbonate and/or metal silicate.
3. power belt according to claim 1 and 2 is characterized in that: described rubber composition comprises that solubility parameter is 6.0～8.1 (cal/cm
3)
1/2Plasticizing agent.
4. power belt according to claim 3 is characterized in that: described solubility parameter is 6.0～8.1 (cal/cm
3)
1/2Plasticizing agent comprise the oil plasticizing agent.
5. power belt according to claim 4 is characterized in that: described oil plasticizing agent one of comprises in paraffin plasticizing agent and the cycloalkane plasticizing agent at least.
6. power belt according to claim 5 is characterized in that: described rubber composition comprises the described paraffin plasticizing agent and/or the cycloalkane plasticizing agent of 3～20 weight portions.
7. according to each described power belt in the claim 1～6, it is characterized in that: described solubility parameter is 8.3～10.7 (cal/cm
3)
1/2Plasticizing agent be ether-ester plasticizers.
8. according to each described power belt in the claim 1～6, it is characterized in that: described power belt is one of V-type band and V-type rib band.
9. according to each described power belt in the claim 1～6, it is characterized in that: described power belt is a kind of no cingulum.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005250487 | 2005-08-31 | ||
| JP2005250487 | 2005-08-31 | ||
| JP2006027409 | 2006-02-03 | ||
| JP2006158143 | 2006-06-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1982743A CN1982743A (en) | 2007-06-20 |
| CN100554720C true CN100554720C (en) | 2009-10-28 |
Family
ID=38165468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100639010A Active CN100554720C (en) | 2005-08-31 | 2006-08-31 | Power belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100554720C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9157503B2 (en) | 2013-03-14 | 2015-10-13 | Dayco Ip Holdings, Llc | V-ribbed belt with spaced rib flank reinforcement |
| JP6627234B2 (en) * | 2015-03-25 | 2020-01-08 | 富士ゼロックス株式会社 | Meandering suppression member, transfer belt, transfer unit, and image forming apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5162421A (en) * | 1989-07-18 | 1992-11-10 | Tokai Carbon Co., Ltd. | Rubber composition |
-
2006
- 2006-08-31 CN CNB2006100639010A patent/CN100554720C/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5162421A (en) * | 1989-07-18 | 1992-11-10 | Tokai Carbon Co., Ltd. | Rubber composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1982743A (en) | 2007-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4672603B2 (en) | Friction transmission belt | |
| JP4932338B2 (en) | Friction transmission belt | |
| CN1821614B (en) | Power transmission belt and method of forming a power transmission belt | |
| KR101495453B1 (en) | Friction transmission belt | |
| KR101516934B1 (en) | Friction transmission belt and method for producing same | |
| JP2009156467A (en) | Power transmission belt | |
| CN107532681B (en) | Transmission belt | |
| JP2017194158A (en) | Friction transmission belt | |
| CN100554720C (en) | Power belt | |
| JP4808081B2 (en) | Belt drive | |
| JP2017116100A (en) | Friction transmission belt | |
| JP6616793B2 (en) | Friction transmission belt | |
| JP2006234089A (en) | Rubber composition for friction transmission belt and friction transmission belt | |
| JP2008157445A (en) | Friction transmission belt and its manufacturing method | |
| JP4856375B2 (en) | V-ribbed belt | |
| JP2008082538A (en) | Power transmission belt and its manufacturing method | |
| JP2007198468A (en) | Friction transmission belt | |
| JP2006266280A (en) | Transmission belt | |
| JP2007120759A (en) | Transmission belt | |
| JP5329262B2 (en) | Friction transmission belt | |
| JP2007298162A (en) | Friction transmission belt | |
| JP2007092880A (en) | Transmission belt | |
| JP2006124484A (en) | Method for producing bonded product of ethylene/alpha-olefin rubber composition and fiber and power transmission belt | |
| JP4624753B2 (en) | V-ribbed belt | |
| JP2006258114A (en) | Friction transmission belt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |