WO2023282119A1 - 架橋ゴム組成物及びそれを用いた摩擦伝動ベルト - Google Patents
架橋ゴム組成物及びそれを用いた摩擦伝動ベルト Download PDFInfo
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- WO2023282119A1 WO2023282119A1 PCT/JP2022/025675 JP2022025675W WO2023282119A1 WO 2023282119 A1 WO2023282119 A1 WO 2023282119A1 JP 2022025675 W JP2022025675 W JP 2022025675W WO 2023282119 A1 WO2023282119 A1 WO 2023282119A1
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 150
- 239000005060 rubber Substances 0.000 title claims abstract description 140
- 239000000203 mixture Substances 0.000 title claims abstract description 70
- 230000005540 biological transmission Effects 0.000 title claims description 12
- 229920000642 polymer Polymers 0.000 claims abstract description 49
- 239000000835 fiber Substances 0.000 claims abstract description 43
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000005977 Ethylene Substances 0.000 claims abstract description 30
- 150000001451 organic peroxides Chemical class 0.000 claims abstract description 21
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 17
- 239000000806 elastomer Substances 0.000 claims abstract description 10
- 239000004711 α-olefin Substances 0.000 claims abstract description 10
- 229920002943 EPDM rubber Polymers 0.000 claims description 22
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical group C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 claims description 21
- 238000004132 cross linking Methods 0.000 claims description 18
- 150000001993 dienes Chemical class 0.000 claims description 9
- 229920000728 polyester Polymers 0.000 claims description 9
- 229920002302 Nylon 6,6 Polymers 0.000 claims description 8
- 230000000052 comparative effect Effects 0.000 description 20
- 238000005299 abrasion Methods 0.000 description 14
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 8
- 239000004744 fabric Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000013329 compounding Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- JGDSPOCXKKSJTF-UHFFFAOYSA-N C(C)(C)(C)OOC1=CC(=C(C=C1C(C)C)C(C)C)OOC(C)(C)C Chemical compound C(C)(C)(C)OOC1=CC(=C(C=C1C(C)C)C(C)C)OOC(C)(C)C JGDSPOCXKKSJTF-UHFFFAOYSA-N 0.000 description 4
- 150000002978 peroxides Chemical class 0.000 description 4
- RDKJRSZNUXGKTG-UHFFFAOYSA-N 1,4-bis(tert-butylperoxy)-2,3-di(propan-2-yl)benzene Chemical compound CC(C)C1=C(OOC(C)(C)C)C=CC(OOC(C)(C)C)=C1C(C)C RDKJRSZNUXGKTG-UHFFFAOYSA-N 0.000 description 3
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 1
- PRBHEGAFLDMLAL-GQCTYLIASA-N (4e)-hexa-1,4-diene Chemical compound C\C=C\CC=C PRBHEGAFLDMLAL-GQCTYLIASA-N 0.000 description 1
- RIPYNJLMMFGZSX-UHFFFAOYSA-N (5-benzoylperoxy-2,5-dimethylhexan-2-yl) benzenecarboperoxoate Chemical compound C=1C=CC=CC=1C(=O)OOC(C)(C)CCC(C)(C)OOC(=O)C1=CC=CC=C1 RIPYNJLMMFGZSX-UHFFFAOYSA-N 0.000 description 1
- VBQCFYPTKHCPGI-UHFFFAOYSA-N 1,1-bis(2-methylpentan-2-ylperoxy)cyclohexane Chemical compound CCCC(C)(C)OOC1(OOC(C)(C)CCC)CCCCC1 VBQCFYPTKHCPGI-UHFFFAOYSA-N 0.000 description 1
- HSLFISVKRDQEBY-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)cyclohexane Chemical compound CC(C)(C)OOC1(OOC(C)(C)C)CCCCC1 HSLFISVKRDQEBY-UHFFFAOYSA-N 0.000 description 1
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 1
- IPJGAEWUPXWFPL-UHFFFAOYSA-N 1-[3-(2,5-dioxopyrrol-1-yl)phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C1=CC=CC(N2C(C=CC2=O)=O)=C1 IPJGAEWUPXWFPL-UHFFFAOYSA-N 0.000 description 1
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- PMAAOHONJPSASX-UHFFFAOYSA-N 2-butylperoxypropan-2-ylbenzene Chemical compound CCCCOOC(C)(C)C1=CC=CC=C1 PMAAOHONJPSASX-UHFFFAOYSA-N 0.000 description 1
- WXDJDZIIPSOZAH-UHFFFAOYSA-N 2-methylpentan-2-yl benzenecarboperoxoate Chemical compound CCCC(C)(C)OOC(=O)C1=CC=CC=C1 WXDJDZIIPSOZAH-UHFFFAOYSA-N 0.000 description 1
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 1
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- BXIQXYOPGBXIEM-UHFFFAOYSA-N butyl 4,4-bis(tert-butylperoxy)pentanoate Chemical compound CCCCOC(=O)CCC(C)(OOC(C)(C)C)OOC(C)(C)C BXIQXYOPGBXIEM-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- -1 polyethylene naphthalate Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
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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
- 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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
-
- 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
- C08L23/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/04—V-belts, i.e. belts of tapered cross-section made of rubber
- F16G5/06—V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/20—V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
- C08L2312/02—Crosslinking with dienes
Definitions
- the present invention relates to a crosslinked rubber composition and a friction transmission belt using the same.
- Patent Literature 1 discloses a sulfur crosslinked rubber composition for rubber boots containing EPDM with an ethylene content of 64% by mass and EPDM with an ethylene content of 50% by mass as rubber components.
- Patent Document 2 a sulfur-crosslinked rubber composition containing a first EPDM rubber component having an ethylene content of 67% by mass or more and a second EPDM rubber component having an ethylene content of 57% by mass or less is used to contact a pulley.
- a friction transmission belt having portions formed therein.
- JP 2016-141750 A Japanese Patent No. 6082853
- the present invention provides a rubber component comprising a first polymer that is an ethylene- ⁇ -olefin elastomer having an ethylene content of less than 60% by mass and a second polymer that is an ethylene- ⁇ -olefin elastomer having an ethylene content of 60% by mass or more.
- a rubber component comprising a first polymer that is an ethylene- ⁇ -olefin elastomer having an ethylene content of less than 60% by mass and a second polymer that is an ethylene- ⁇ -olefin elastomer having an ethylene content of 60% by mass or more.
- short fibers dispersed in the rubber component wherein the rubber component is crosslinked using an organic peroxide as a crosslinking agent, and in an uncrosslinked rubber composition before crosslinking of the organic peroxide
- the blending amount is 1 part by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the rubber component.
- the present invention is a friction transmission belt having a pulley contact surface formed of the crosslinked rubber composition of the present invention.
- FIG. 1 is a perspective view of a piece of a single cogged V-belt;
- FIG. 1 is a perspective view of a piece of a double cogged V-belt;
- FIG. 1 is a perspective view of a piece of a double cogged V-belt;
- the crosslinked rubber composition according to the embodiment comprises a rubber component and short fibers dispersed in the rubber component.
- the rubber component includes a first polymer that is an ethylene- ⁇ -olefin elastomer with an ethylene content of less than 60% by mass and a second polymer that is an ethylene- ⁇ -olefin elastomer with an ethylene content of 60% by mass or more.
- the rubber component is cross-linked using an organic peroxide as a cross-linking agent, and the amount of the organic peroxide in the uncross-linked rubber composition before cross-linking is 1 per 100 parts by mass of the rubber component. It is more than 10 parts by mass and less than 10 parts by mass.
- the rubber component in which the short fibers are dispersed is the first polymer, which is an ethylene- ⁇ -olefin elastomer having an ethylene content of less than 60% by mass, and the ethylene content of 60% by mass. % or more of the second polymer that is an ethylene- ⁇ -olefin elastomer, it is possible to obtain excellent wear resistance. In addition, excellent workability can also be obtained thereby.
- the first and second polymers include ethylene-propylene-diene terpolymer (hereinafter referred to as "EPDM"), ethylene-propylene copolymer (EPM), ethylene-butene copolymer (EDM), ethylene-octene copolymer (EOM). etc.
- EPDM ethylene-propylene-diene terpolymer
- EPM ethylene-propylene copolymer
- EOM ethylene-butene copolymer
- EOM ethylene-octene copolymer
- the first and second polymers are EPDM among these.
- examples of the diene component include ethylidenenorbornene, dicyclopentadiene, 1,4-hexadiene, and the like. Of these, the diene component is preferably ethylidene norbornene.
- Both the first and second polymers are preferably EPDM, more preferably EPDM in which the diene component is ethyliden
- the first and second polymers are the main components.
- the sum of the contents of the first and second polymers in the rubber component is 50% by mass or more, and from the viewpoint of obtaining excellent wear resistance and workability, preferably 80% by mass or more, more preferably 90% by mass or more, More preferably, it is 100% by mass.
- the rubber component may contain, for example, chloroprene rubber, hydrogenated nitrile rubber, etc., in addition to the first and second polymers.
- the content A of the first polymer is preferably larger than the content B of the second polymer from the viewpoint of obtaining excellent wear resistance and workability.
- the content A of the first polymer in 100 parts by mass of the rubber component is preferably more than 50 parts by mass, more preferably 55 parts by mass or more, still more preferably 60 parts by mass or more, and even more preferably 61 parts by mass. From the same viewpoint, it is preferably 75 parts by mass or less, more preferably 70 parts by mass or less, and even more preferably 69 parts by mass or less.
- the content B of the second polymer in 100 parts by mass of the rubber component is preferably 25 parts by mass or more, more preferably 30 parts by mass or more, and still more preferably 31 parts by mass or more, from the viewpoint of obtaining excellent abrasion resistance and workability. From the same viewpoint, it is preferably less than 50 parts by mass, more preferably 45 parts by mass or less, still more preferably 40 parts by mass or less, and even more preferably 39 parts by mass or less.
- the ethylene content of the first polymer is less than 60% by mass, preferably 45% by mass or more, more preferably 50% by mass or more, from the viewpoint of obtaining excellent wear resistance and workability. Therefore, it is preferably 55% by mass or less.
- the ethylene content of the second polymer is 60% by mass or more, preferably 65% by mass or more from the viewpoint of obtaining excellent wear resistance and workability, and preferably 75% by mass or less from the same viewpoint. , more preferably 70% by mass or less.
- the average ethylene content of the first and second polymers in the rubber component is preferably 55% by mass or more, more preferably 57.5% by mass or more, from the viewpoint of obtaining excellent abrasion resistance and workability. from the viewpoint of, preferably 65% by mass or less, more preferably 61% by mass or less, and even more preferably 58% by mass or less.
- the average ethylene content of the first and second polymers in the rubber component is the product of the content of the first polymer in the rubber component and the ethylene content, and the product of the content of the second polymer in the rubber component and the ethylene content. is the sum of
- the ENB content is preferably 7% by mass or more, more preferably 7.5% by mass, from the viewpoint of obtaining excellent wear resistance and workability. From the same viewpoint, it is preferably 8.5% by mass or less, more preferably 8% by mass or less.
- the ENB content is preferably 2% by mass or more, more preferably 4.3% by mass, from the viewpoint of obtaining excellent wear resistance and workability. From the same viewpoint, it is preferably 7% by mass or less, more preferably 4.7% by mass or less.
- the average ENB content of the first and second polymers in the rubber component is It is preferably 4% by mass or more, more preferably 6.5% by mass or more, and from the same viewpoint, preferably 7% by mass or less, more preferably 6.6% by mass or less.
- the average ENB content of the first and second polymers in the rubber component is the product of the content of the first polymer in the rubber component and the ENB content, and the product of the content of the second polymer in the rubber component and the ENB content. is the sum of
- staple fibers include polyester staple fibers, nylon 66 staple fibers, para-aramid staple fibers, and polyethylene naphthalate staple fibers.
- the staple fibers preferably contain one or more of these, and more preferably contain polyester staple fibers and/or nylon 66 staple fibers from the viewpoint of obtaining excellent abrasion resistance and workability, More preferably, it contains both polyester staple fibers and nylon 66 staple fibers.
- the staple fibers contain both polyester staple fibers and nylon 66 staple fibers, the content of nylon 66 staple fibers is preferably higher than the content of polyester staple fibers.
- the fiber length of the short fibers is, for example, 0.5 mm or more and 5.0 mm or less.
- the fiber diameter of the short fibers is, for example, 5 ⁇ m or more and 70 ⁇ m or less.
- the content of the short fibers in the rubber composition according to the embodiment is, for example, 5 parts by mass or more and 35 parts by mass or less with respect to 100 parts by mass of the rubber component.
- organic peroxides that crosslink rubber components include dicumyl peroxide, 1,3-di(t-butylperoxy)diisopropylbenzene, 1,4-di(t-butylperoxy)diisopropylbenzene, t -Dialkyl such as butylcumyl peroxide, 2,5-dimethyl-2,5-di(t-butylperoxy)hexane, 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane-3 Peroxide; 1,1-di(t-hexylperoxy)cyclohexane, 1,1-di(t-butylperoxy)cyclohexane, n-butyl-4,4-di(t-butylperoxy)valerate, etc.
- the organic peroxide preferably contains one or more of these, and more preferably contains a dialkyl peroxide from the viewpoint of obtaining excellent wear resistance and workability, and has an aromatic ring in the molecule. It is more preferable to contain a dialkyl peroxide having a, more preferably a dialkyl peroxide having one aromatic ring in the molecule, and 1,3-di(t-butylperoxy)diisopropylbenzene. Even more preferably, it contains both 1,3-di(t-butylperoxy)diisopropylbenzene and 1,4-di(t-butylperoxy)diisopropylbenzene. From the same viewpoint, the molecular weight of the organic peroxide is preferably 300 or more and 350 or less.
- the compounding amount C of the organic peroxide in the uncrosslinked rubber composition before crosslinking is 1 part by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the rubber component, from the viewpoint of obtaining excellent wear resistance and workability. Therefore, it is preferably 1.1 parts by mass or more, more preferably 1.2 parts by mass or more, still more preferably 1.6 parts by mass or more, preferably 3.6 parts by mass or less, more preferably 3.2 parts by mass 2.8 parts by mass or less, more preferably 2.8 parts by mass or less.
- the ratio (A/C) of the content A of the first polymer to the compounding amount C of the uncrosslinked rubber composition before crosslinking of the organic peroxide is preferably 9 from the viewpoint of obtaining excellent abrasion resistance and workability. 0.25 or more, more preferably 10 or more, still more preferably 11.25 or more, preferably 64 or less, more preferably 63.5 or less, still more preferably 63 or less.
- the ratio (B/C) of the content B of the second polymer to the compounding amount C in the uncrosslinked rubber composition before crosslinking of the organic peroxide is preferably 5 from the viewpoint of obtaining excellent wear resistance and workability. 0.5 or more, more preferably 6.25 or more, still more preferably 7.5 or more, preferably 46 or less, more preferably 45.5 or less, still more preferably 45 or less.
- the rubber component is also crosslinked with a co-crosslinking agent.
- co-crosslinking agents include trimethylolpropane trimethacrylate, N,N'-m-phenylenebismaleimide, triallyl isocyanurate, ethylene glycol dimethacrylate, and liquid polybutadiene.
- the co-crosslinking agent preferably contains one or more of these, and more preferably contains trimethylolpropane trimethacrylate from the viewpoint of obtaining excellent wear resistance and workability.
- the amount D of the co-crosslinking agent in the uncrosslinked rubber composition before crosslinking is preferably 0.5 parts by mass or more, or more, with respect to 100 parts by mass of the rubber component, from the viewpoint of obtaining excellent wear resistance and workability. It is preferably 0.7 parts by mass or more, more preferably 1 part by mass or more, preferably 40 parts by mass or less, more preferably 20 parts by mass or less, and even more preferably 10 parts by mass or less.
- the ratio (A/D) of the content A of the first polymer to the blending amount D of the uncrosslinked rubber composition before crosslinking of the co-crosslinking agent is preferably 0.5 from the viewpoint of obtaining excellent wear resistance and workability. It is 8 or more, more preferably 1.0 or more, still more preferably 1.5 or more, preferably 140 or less, more preferably 135 or less, still more preferably 130 or less.
- the ratio (B/D) of the content B of the second polymer to the content D of the uncrosslinked rubber composition before crosslinking of the co-crosslinking agent is preferably 0.00, from the viewpoint of obtaining excellent abrasion resistance and workability. It is 5 or more, more preferably 0.75 or more, still more preferably 1 or more, preferably 100 or less, more preferably 95 or less, still more preferably 90 or less.
- the blending amount D of the co-crosslinking agent in the uncrosslinked rubber composition before crosslinking is higher than the blending amount C of the organic peroxide in the uncrosslinked rubber composition before crosslinking, from the viewpoint of obtaining excellent wear resistance and workability. Less is preferred.
- the ratio (C/D) of the compounding amount C in the uncrosslinked rubber composition before crosslinking of the organic peroxide to the compounding amount D in the uncrosslinked rubber composition before crosslinking of the co-crosslinking agent is preferably It is 0.025 or more, more preferably 0.037 or more, still more preferably 0.055 or more, preferably 20 or less, more preferably 7.2 or less, and still more preferably 6.4 or less.
- the crosslinked rubber composition according to the embodiment may additionally contain carbon black, a vulcanization accelerator, a vulcanization accelerator aid, a processing aid, an anti-aging agent, and the like.
- FIG. 1A shows a single cogged V-belt B1 as an example of a friction transmission belt using a crosslinked rubber composition according to an embodiment.
- This single-cogged V-belt B1 is used, for example, as a speed change belt for small scooters and agricultural machinery.
- the single-cogged V-belt B1 has a trapezoidal cross-sectional shape and is integrally formed by laminating a compression rubber layer 11 on the inner circumference side of the belt, a tension rubber layer 12 on the outer circumference side of the belt, and an adhesive rubber layer 13 therebetween. It has a belt body 10 made of rubber. A core wire 14 arranged to form a spiral having a pitch in the belt width direction is embedded in the intermediate portion of the adhesive rubber layer 13 in the thickness direction. An inner reinforcing cloth 15 is pasted on the surface of the compression rubber layer 11 forming the inner peripheral surface of the belt, and an outer reinforcing cloth 16 is pasted on the surface of the tension rubber layer 12 forming the outer peripheral surface of the belt. ing. Inner cogs 17 are arranged on the inner peripheral side of the belt at a constant pitch in the longitudinal direction of the belt, while the outer peripheral side of the belt has a flat belt back surface.
- FIG. 1B shows a double cogged V-belt B2 as another example of the friction transmission belt using the crosslinked rubber composition according to the embodiment.
- This double cogged V-belt B2 is used, for example, as a variable speed belt for large buggies and large scooters.
- the double-cogged V-belt B2 has a belt body 10 composed of a compression rubber layer 11, a tension rubber layer 12, and an adhesive rubber layer 13, a core wire 14 embedded in the adhesive rubber layer 13, and a belt It has an inner reinforcing cloth 15 attached to the inner peripheral surface and an outer reinforcing cloth 16 attached to the outer peripheral surface of the belt.
- Inner cogs 17 and outer cogs 18 are arranged at a constant pitch in the belt length direction on the belt inner circumference side and the belt outer circumference side, respectively.
- the compression rubber layers 11 forming pulley contact surfaces on both sides of the belt body 10 are formed of the crosslinked rubber composition according to the embodiment.
- the crosslinked rubber composition according to the embodiment is preferably provided so that the grain direction corresponds to the belt width direction.
- the compressed rubber layer 11 is pressed against the pulleys, and the pulley contact surfaces on both sides of the compressed rubber layer 11 are formed of the crosslinked rubber composition according to the embodiment. Therefore, excellent wear resistance can be obtained.
- the single-cogged V-belt B1 and the double-cogged belt B2 are shown as friction transmission belts, but they are not particularly limited to these, and flat belts, V-belts, V-ribbed belts, and the like may be used.
- Example 1-1 50 parts by mass of the first EPDM of the first polymer (manufactured by T7241 JSR, ethylene content: 52% by mass, ENB content: 7.7% by mass), and the second EPDM-(1) of the second polymer (EP133C manufactured by JSR, ethylene content: 69% by mass, ENB content: 4.5% by mass) and 50 parts by mass of the blended rubber was used as the rubber component.
- this rubber component Per 100 parts by mass of this rubber component, 15 parts by mass of polyester short fibers (fiber length: 3 mm, fiber diameter: 23 ⁇ m), 60 parts by mass of carbon black (HAF), 5 parts by mass of process oil, 5 parts by mass of zinc oxide, stearin 0.25 parts by mass of acid, 2.5 parts by mass of antioxidant, organic peroxide (Peroximone F-40 manufactured by NOF Corporation, 1,3-di(t-butylperoxy)diisopropylbenzene and 1,4-di (t-Butylperoxy) diisopropylbenzene molecular weight: 338.49, purity: 40%) 7 parts by mass (2.8 parts by mass), and a co-crosslinking agent (Hicross M, manufactured by Seiko Kagaku Co., Ltd., trimethylolpropane trimethacrylate) An uncrosslinked rubber composition was prepared by blending and kneading 1.5 parts by mass.
- Example 1-1 an abrasion test sample of the crosslinked rubber composition was prepared, and this sample was designated as Example 1-1.
- This abrasion test sample was formed in the shape of a rectangular parallelepiped block having 5 mm squares on both end faces and a length of 10 mm, the length direction of which corresponded to the orientation direction of the polyester short fibers. .
- Example 1-2 A wear test sample having the same configuration as in Example 1-1 was prepared except that a blend rubber of 60 parts by mass of the first EPDM and 40 parts by mass of the second EPDM-(1) was used as the rubber component. 1-2.
- Example 1-3 A wear test sample having the same configuration as in Example 1-1 except that a blend rubber of 65 parts by mass of the first EPDM-(1) and 35 parts by mass of the second EPDM-(1) was used as the rubber component was prepared and used as an example. 1-3.
- Example 1-4 A wear test sample having the same configuration as in Example 1-1 except that a blend rubber of 70 parts by mass of the first EPDM-(1) and 30 parts by mass of the second EPDM-(1) was used as the rubber component was prepared and used as an example. 1-4.
- Example 1-5 Example except that 2nd EPDM-(2) (KELTAN5260 manufactured by ARLANXEO, ethylene content: 62% by mass, ENB content: 2.3% by mass) was used as the second polymer instead of 2nd EPDM-1.
- a wear test sample having the same configuration as that of 1-2 was prepared and designated as Example 1-5.
- Example 1-6 A wear test sample having the same configuration as in Example 1-5 except that a blend rubber of 32 parts by mass of the first EPDM and 68 parts by mass of the second EPDM-(2) was used as the rubber component, was prepared and used as an example. 1-6.
- staple fibers para-aramid staple fibers (fiber length: 3 mm, fiber diameter: 12 ⁇ m) were used.
- Abrasion test samples were prepared as Examples 3-1 to 3-6 and Comparative Examples 3-1 to 3-2, respectively.
- Examples 4-1 to 4-6 and Comparative Examples 4-1 to 4-2 > Examples 1-1 to 1-6, except that polyester staple fibers and nylon 66 staple fibers were used as staple fibers, and the respective amounts were set to 12 parts by mass and 18 parts by mass with respect to 100 parts by mass of the rubber component.
- Abrasion test samples having the same configurations as those of Comparative Examples 1-1 to 1-2 were prepared, and designated as Examples 4-1 to 4-6 and Comparative Examples 4-1 to 4-2, respectively.
- the wear test sample was set in the sample holder of the wear tester, and one end face of the wear test sample was brought into contact with the surface of a disc made of FC200 material. A load of 33.32 N was applied to the disc side of the wear test sample while contacting. In a temperature atmosphere of 23° C., the disk was rotated at a rotation speed of 48 rpm, and the abrasion test sample was slid on the surface of the disk at a speed of 0.15 m/s. After 7 hours, the rotation of the disk was stopped, the sample for abrasion test was removed from the sample holder, and the mass was measured after the test. Then, the difference between the initial mass of the wear test sample and the mass after the test was calculated and used as the amount of wear.
- the rubber component of the crosslinked rubber composition is the first EPDM of the first polymer having an ethylene content of 52% by mass and the second EPDM-(1) of the second polymer having an ethylene content of 69% by mass, or , and the second EPDM-(2), which is the second polymer having an ethylene content of 62% by mass, provide excellent abrasion resistance.
- the present invention is useful in the technical field of crosslinked rubber compositions and friction transmission belts using the same.
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Abstract
Description
以下の実施例1-1乃至1-4及び比較例1、実施例2-1乃至2-4及び比較例2、実施例3-1乃至3-4及び比較例3、並びに実施例4-1乃至4-4及び比較例4の架橋ゴム組成物の摩耗試験用サンプルを作製した。それぞれの構成については表1乃至4にも示す。
第1ポリマーの第1EPDM(T7241 JSR社製、エチレン含量:52質量%、ENB含量:7.7質量%)50質量部と、第2ポリマーの第2EPDM-(1)(EP133C JSR社製、エチレン含量:69質量%、ENB含量:4.5質量%)50質量部とのブレンドゴムをゴム成分とした。このゴム成分100質量部に対して、ポリエステル短繊維(繊維長:3mm、繊維径:23μm)15質量部、カーボンブラック(HAF)60質量部、プロセスオイル5質量部、酸化亜鉛5質量部、ステアリン酸0.25質量部、老化防止剤2.5質量部、有機過酸化物(ペロキシモンF-40 日油社製,1,3-ジ(t-ブチルパーオキシ)ジイソプロピルベンゼン及び1,4-ジ(t-ブチルパーオキシ)ジイソプロピルベンゼン 分子量:338.49、純度:40%)7質量部(2.8質量部)、及び共架橋剤(ハイクロスM 精工化学社製,トリメチロールプロパントリメタクリレート)1.5質量部を配合して混練した未架橋ゴム組成物を調製した。そして、この未架橋ゴム組成物を用いて架橋ゴム組成物の摩耗試験用サンプルを作製し、それを実施例1-1とした。この摩耗試験用サンプルは、両端面が5mm角の正方形で且つ長さが10mmの直方体ブロック状に形成され、その長さ方向がポリエステル短繊維の配向方向の列理方向に対応するものであった。
ゴム成分として、第1EPDM60質量部と第2EPDM-(1)40質量部とのブレンドゴムを用いたことを除いて実施例1-1と同一構成の摩耗試験用サンプルを作製し、それを実施例1-2とした。
ゴム成分として、第1EPDM65質量部と第2EPDM-(1)35質量部とのブレンドゴムを用いたことを除いて実施例1-1と同一構成の摩耗試験用サンプルを作製し、それを実施例1-3とした。
ゴム成分として、第1EPDM70質量部と第2EPDM-(1)30質量部とのブレンドゴムを用いたことを除いて実施例1-1と同一構成の摩耗試験用サンプルを作製し、それを実施例1-4とした。
第2ポリマーとして、第2EPDM-1に代えて、第2EPDM-(2)(KELTAN5260 ARLANXEO社製、エチレン含量:62質量%、ENB含量:2.3質量%)を用いたことを除いて実施例1-2と同一構成の摩耗試験用サンプルを作製し、それを実施例1-5とした。
ゴム成分として、第1EPDM32質量部と第2EPDM-(2)68質量部とのブレンドゴムを用いたことを除いて実施例1-5と同一構成の摩耗試験用サンプルを作製し、それを実施例1-6とした。
ゴム成分として、第1EPDMのみを用いたことを除いて実施例1-1と同一構成の摩耗試験用サンプルを作製し、それを比較例1-1とした。
架橋剤として、有機過酸化物に代えて、硫黄を用いるとともに、加硫促進剤を用い、それぞれの配合量を、ゴム成分100質量部に対して1.6質量部及び4質量部としたことを除いて実施例1-3と同一構成の摩耗試験用サンプルを作製し、それを比較例1-2とした。
短繊維として、ナイロン66短繊維(繊維長:3mm、繊維径:27.3μm)を用いたことを除いて実施例1-1乃至1-6及び比較例1-1乃至1-2と同一構成の摩耗試験用サンプルを作製し、それぞれ実施例2-1乃至2-6及び比較例2-1乃至2-2とした。
短繊維として、パラ系アラミド短繊維(繊維長:3mm、繊維径:12μm)を用いたことを除いて実施例1-1乃至1-6及び比較例1-1乃至1-2と同一構成の摩耗試験用サンプルを作製し、それぞれ実施例3-1乃至3-6及び比較例3-1乃至3-2とした。
短繊維として、ポリエステル短繊維及びナイロン66短繊維を用い、それぞれの配合量をゴム成分100質量部に対して12質量部及び18質量部としたことを除いて実施例1-1乃至1-6及び比較例1-1乃至1-2と同一構成の摩耗試験用サンプルを作製し、それぞれ実施例4-1乃至4-6及び比較例4-1乃至4-2とした。
実施例1-1乃至1-6及び比較例1-1乃至1-2、実施例2-1乃至2-6及び比較例2-1乃至2-2、実施例3-1乃至3-6及び比較例3-1乃至3-2、並びに実施例4-1乃至4-6及び比較例4-1乃至4-2のそれぞれについて摩耗試験を実施した。
B2 ダブルコグドVベルト(摩擦伝動ベルト)
10 ベルト本体
11 圧縮ゴム層
12 伸張ゴム層
13 接着ゴム層
14 心線
15 内側補強布
16 外側補強布
17 内側コグ
18 外側コグ
Claims (12)
- エチレン含量が60質量%未満のエチレン-α-オレフィンエラストマーである第1ポリマーと、エチレン含量が60質量%以上のエチレン-α-オレフィンエラストマーである第2ポリマーとを含むゴム成分と、
前記ゴム成分に分散した短繊維と、
を備え、
前記ゴム成分が、架橋剤として有機過酸化物が用いられて架橋されており、且つ前記有機過酸化物の架橋前の未架橋ゴム組成物における配合量が、前記ゴム成分100質量部に対して1質量部以上10質量部以下である架橋ゴム組成物。 - 請求項1に記載された架橋ゴム組成物において、
前記第1及び第2ポリマーの平均エチレン含量が55質量%以上65質量%以下である架橋ゴム組成物。 - 請求項1又は2に記載された架橋ゴム組成物において、
前記第1ポリマーが、ジエン成分がエチリデンノルボルネンであるEPDMであり、且つそのENB含量が7質量%以上である架橋ゴム組成物。 - 請求項1乃至3のいずれかに記載された架橋ゴム組成物において、
前記第2ポリマーが、ジエン成分がエチリデンノルボルネンであるEPDMであり、且つそのENB含量が2質量%以上7質量%以下である架橋ゴム組成物。 - 請求項1乃至4のいずれかに記載された架橋ゴム組成物において、
前記第1及び第2ポリマーが、いずれもジエン成分がエチリデンノルボルネンであるEPDMであり、且つそれらの平均ENB含量が4質量%以上7質量%以下である架橋ゴム組成物。 - 請求項1乃至5のいずれかに記載された架橋ゴム組成物において、
前記短繊維がポリエステル短繊維及び/又はナイロン66短繊維を含む架橋ゴム組成物。 - 請求項1乃至6のいずれかに記載された架橋ゴム組成物において、
前記有機過酸化物の架橋前の未架橋ゴム組成物における配合量に対する前記第1ポリマーの含有量の比が9.25以上64以下である架橋ゴム組成物。 - 請求項1乃至7のいずれかに記載された架橋ゴム組成物において、
前記有機過酸化物の架橋前の未架橋ゴム組成物における配合量に対する前記第2ポリマーの含有量の比が5.5以上46以下である架橋ゴム組成物。 - 請求項1乃至8のいずれかに記載された架橋ゴム組成物において、
前記ゴム成分が共架橋剤によっても架橋されている架橋ゴム組成物。 - 請求項9に記載された架橋ゴム組成物において、
前記共架橋剤の架橋前の未架橋ゴム組成物における配合量が、ゴム成分100質量部に対して0.5質量部以上40質量部以下である架橋ゴム組成物。 - 請求項9又は10に記載された架橋ゴム組成物において、
前記共架橋剤の架橋前の未架橋ゴム組成物における配合量が、前記有機過酸化物の架橋前の未架橋ゴム組成物における配合量よりも少ない架橋ゴム組成物。 - 請求項1乃至11のいずれかに記載された架橋ゴム組成物でプーリ接触面が形成された摩擦伝動ベルト。
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US6177202B1 (en) * | 1997-10-31 | 2001-01-23 | Mitsuboshi Belting Ltd. | Power transmission belt |
JP2004150524A (ja) * | 2002-10-30 | 2004-05-27 | Mitsuboshi Belting Ltd | 伝動ベルト |
JP2006194322A (ja) * | 2005-01-12 | 2006-07-27 | Bando Chem Ind Ltd | 摩擦伝動ベルト |
JP2007262147A (ja) * | 2006-03-27 | 2007-10-11 | Mitsuboshi Belting Ltd | ゴム組成物及び伝動ベルト |
WO2016021096A1 (ja) * | 2014-08-06 | 2016-02-11 | バンドー化学株式会社 | 摩擦伝動ベルト及びその製造方法、並びにベルト伝動装置 |
DE112017001725T5 (de) * | 2016-03-29 | 2018-12-20 | Bando Chemical Industries, Ltd. | Zahnriemen |
CN108884906B (zh) * | 2016-03-31 | 2019-05-03 | 阪东化学株式会社 | 传动带 |
WO2018056055A1 (ja) * | 2016-09-26 | 2018-03-29 | バンドー化学株式会社 | ゴム組成物及びそれを用いた伝動ベルト |
WO2020031607A1 (ja) * | 2018-08-08 | 2020-02-13 | バンドー化学株式会社 | 摩擦伝動ベルト |
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JP2004507679A (ja) * | 2000-08-18 | 2004-03-11 | ザ ゲイツ コーポレイション | 高モジュラス接着性ゴム部材を有する伝動ベルト |
JP2004190686A (ja) * | 2001-10-19 | 2004-07-08 | Mitsuboshi Belting Ltd | 動力伝動用ベルト |
JP2005126642A (ja) * | 2003-10-27 | 2005-05-19 | Bando Chem Ind Ltd | 伝動ベルト用ゴム組成物及び伝動ベルト |
JP2006194357A (ja) * | 2005-01-13 | 2006-07-27 | Bando Chem Ind Ltd | 摩擦伝動ベルト |
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WO2010047029A1 (ja) * | 2008-10-24 | 2010-04-29 | バンドー化学株式会社 | 伝動ベルト用ゴム組成物及びそれを用いた伝動ベルト |
WO2012132537A1 (ja) * | 2011-03-31 | 2012-10-04 | ゲイツ・ユニッタ・アジア株式会社 | 摩擦伝動ベルト |
JP2015522089A (ja) * | 2012-06-29 | 2015-08-03 | ダウ グローバル テクノロジーズ エルエルシー | 熱可塑性加硫物のためのエチレン/αオレフィン/非共役ポリエン系組成物 |
WO2017033392A1 (ja) * | 2015-08-27 | 2017-03-02 | バンドー化学株式会社 | 摩擦伝動ベルト |
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JPWO2023282119A1 (ja) | 2023-01-12 |
JP7219369B1 (ja) | 2023-02-07 |
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