WO2018110078A1 - Composition de caoutchouc pour caoutchouc antivibratoire - Google Patents

Composition de caoutchouc pour caoutchouc antivibratoire Download PDF

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Publication number
WO2018110078A1
WO2018110078A1 PCT/JP2017/037835 JP2017037835W WO2018110078A1 WO 2018110078 A1 WO2018110078 A1 WO 2018110078A1 JP 2017037835 W JP2017037835 W JP 2017037835W WO 2018110078 A1 WO2018110078 A1 WO 2018110078A1
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WO
WIPO (PCT)
Prior art keywords
rubber
weight
vibration
ethylene
parts
Prior art date
Application number
PCT/JP2017/037835
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English (en)
Japanese (ja)
Inventor
宙希 大竹
Original Assignee
東洋ゴム工業株式会社
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Filing date
Publication date
Priority claimed from JP2016244422A external-priority patent/JP6860337B2/ja
Priority claimed from JP2016244429A external-priority patent/JP2018095809A/ja
Priority claimed from JP2016244377A external-priority patent/JP6803219B2/ja
Priority claimed from JP2016244444A external-priority patent/JP6860338B2/ja
Application filed by 東洋ゴム工業株式会社 filed Critical 東洋ゴム工業株式会社
Publication of WO2018110078A1 publication Critical patent/WO2018110078A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/06—Sulfur
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/54—Silicon-containing compounds
    • 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
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal

Definitions

  • the present invention relates to a rubber composition for vibration-proof rubber containing at least an ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber.
  • vibration-proof rubber strength characteristics for supporting heavy objects such as engines and vibration-proof performance for absorbing and controlling the vibration are required.
  • the anti-vibration rubber is exposed to high temperatures, so it is required to have excellent creep resistance at high temperatures in addition to strength properties and anti-vibration performance.
  • EPDM ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber
  • Patent Document 1 an object is to produce an anti-vibration rubber having a low dynamic magnification by using EPDM having a high ethylene content and performing organic peroxide crosslinking while blending carbon black.
  • Patent Document 1 has a certain effect in reducing the dynamic magnification of the vibration-proof rubber, but the workability of the rubber composition and the creep resistance at high temperatures are high. It has been found that there is no improvement in terms of heat resistance, sag resistance, and strength properties.
  • the present invention (1) A rubber composition for vibration-proof rubber having a low dynamic magnification and excellent vibration-proof performance and excellent workability; (2) A rubber composition for anti-vibration rubber, which is a raw material for anti-vibration rubber with low dynamic magnification and excellent anti-vibration performance, and excellent creep resistance at high temperatures, (3) Rubber composition for anti-vibration rubber, which is a raw material of anti-vibration rubber having excellent vibration-proof performance at low dynamic magnification and excellent creep resistance and sag resistance at high temperature, or (4) Low dynamic magnification An object of the present invention is to provide a rubber composition for a vibration-proof rubber having excellent vibration-proof performance and excellent creep resistance and strength properties at high temperatures.
  • the present invention contains an ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber, silica, a silane coupling agent, and sulfur, and the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber contains ethylene.
  • the rubber component having a content of 50% by weight or more and a Mooney viscosity (ML 1 + 4 (125 ° C.)) of 65 or more and containing the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber is 100 parts by weight.
  • the present invention relates to a rubber composition for vibration-proof rubber, wherein the amount of silica is 12 to 24 parts by weight and the amount of sulfur is 0.75 to 2.5 parts by weight.
  • specific EPDM is blended as a rubber component in the rubber composition for vibration-proof rubber, and silica and a silane coupling agent are added thereto to perform sulfur crosslinking.
  • the anti-vibration rubber obtained by vulcanizing the rubber composition for anti-vibration rubber according to the present invention can improve the anti-vibration performance without deteriorating the creep resistance at high temperature.
  • the reason why such an effect is obtained is not clear, but by crosslinking the specific EPDM with sulfur, the crosslinking density is increased, and the elastic term is dominant over the viscous term with respect to viscoelasticity when used as a vibration-proof rubber. Become.
  • the reduction in dynamic magnification can be achieved, and coupled with the presence of silica, the decrease in elastic modulus at high temperature is suppressed, and the creep resistance at high temperature is improved.
  • the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber is preferably contained at 100% by weight when the total amount of the rubber component is 100% by weight. This configuration is preferable because the vibration-proof performance of the vibration-proof rubber obtained by vulcanizing the rubber composition can be improved without deteriorating the processability of the rubber composition.
  • the rubber composition for vibration-proof rubber it is preferable to further contain 21 to 38 parts by weight of oil when the total amount of rubber components is 100 parts by weight.
  • specific EPDM is blended as a rubber component in the rubber composition for vibration-proof rubber, and silica and a silane coupling agent are added thereto to perform sulfur crosslinking.
  • the anti-vibration rubber obtained by vulcanizing the rubber composition for anti-vibration rubber can improve the anti-vibration performance without deteriorating the creep resistance at high temperature.
  • the rubber composition for an anti-vibration rubber when the total amount of the rubber component including the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber is 100 parts by weight, the rubber composition further contains 30 to 60 parts by weight of carbon black. Is preferred. Thereby, the anti-vibration rubber after vulcanization can be further increased in hardness, and the sag resistance can be particularly improved.
  • the present invention also provides an ethylene- ⁇ -olefin-nonconjugated diene having an ethylene content of 50% by weight or more and a Mooney viscosity (ML1 + 4 (125 ° C.)) of 65 or more when the total amount of rubber components is 100% by weight.
  • the present invention relates to a rubber composition for vibration-proof rubber, characterized in that the copolymer rubber is 100% by weight or more.
  • the rubber composition for an anti-vibration rubber when the ethylene content of the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber is 60% by weight or more and the total amount of rubber components is 100 parts by weight, silica It is preferable to contain 12 to 24 parts by weight and less than 1.2 parts by weight of sulfur.
  • the specific EPDM is blended in an amount of 100% by weight while suppressing the amount of sulfur.
  • the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber is preferably a non-oil-extended type, and the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber
  • the Mooney viscosity (ML1 + 4 (125 ° C.)) is more preferably less than 100. In this case, since the Mooney viscosity of EPDM is kept low even in non-oil-extended, the anti-vibration performance of the obtained anti-vibration rubber is improved while improving the processability of the rubber composition for anti-vibration rubber. Can be improved.
  • the rubber composition for vibration-proof rubber according to the present invention contains at least ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber (EPDM).
  • EPDM ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber
  • EPDM is a ternary copolymer in which an unsaturated bond is introduced by copolymerizing a small amount of a copolymer of ethylene and propylene and a non-conjugated diene monomer, which is a third component as a crosslinking monomer, as a non-conjugated diene.
  • examples thereof include dicyclopentadiene, 1,4-hexadiene, 5-ethylidene-2-norbornene and the like.
  • EPDM satisfying the following conditions can be used as EPDM.
  • the ethylene content is 50% by weight or more, and (2) the Mooney viscosity (ML 1 + 4 (125 ° C.)) is 65 or more.
  • the Mooney viscosity (ML 1 + 4 (125 ° C.)) is 65 or more.
  • it is preferably 60 to 70% by weight, and more preferably 62 to 64% by weight.
  • two or more types of EPDM can be used in combination, and the ethylene content of EPDM in that case means an average value in consideration of the amount used.
  • the ethylene content of EPDM can be calculated based on ASTM D 3900.
  • a preferable lower limit is 68 or more, and a preferable upper limit is less than 100.
  • the Mooney viscosity (ML 1 + 4 (125 ° C.)) of EPDM can be calculated based on ASTM D 1646.
  • EPDM ethylene content of 50% by weight or more and (2) Mooney viscosity (ML 1 + 4 (125 ° C.)) of 65 or more.
  • IP5565 ethylene content 50% by weight, ML1 + 4 (125 ° C.) 65, diene content (hereinafter abbreviated as “DN”) 7.5% by weight) and IP4770 (ethylene content 70% by weight, ML1 + 4 (125 C) 70, DN 4.9% by weight).
  • DN diene content
  • IP4770 ethylene content 70% by weight, ML1 + 4 (125 C) 70, DN 4.9% by weight.
  • the combined ratio is a ratio of IP5565 having an ethylene content of 50% by weight and IP4770 having an ethylene content of 70% by weight. 70 to 50/50 is preferable, and 35/65 to 45/55 is preferable.
  • EPDM satisfying the following conditions can also be used as EPDM.
  • Ethylene content is 60% by weight or more
  • Mooney viscosity (ML 1 + 4 (125 ° C.)) is 65 or more.
  • it is preferably 65 to 75% by weight, more preferably 67 to 72% by weight.
  • the ethylene content of EPDM can be calculated based on ASTM D 3900.
  • a preferable lower limit is 68 or more, and a preferable upper limit is less than 100.
  • the Mooney viscosity (ML 1 + 4 (125 ° C.)) of EPDM can be calculated based on ASTM D 1646.
  • EPDM ethylene content of 60% by weight or more and (4) Mooney viscosity (ML 1 + 4 (125 ° C.)) of 65 or more.
  • IP4770 ethylene content 70% by weight, ML1 + 4 (125 ° C.) 70, diene amount (hereinafter abbreviated as “DN”) 4.9% by weight
  • DN diene amount
  • oil-extended rubber means rubber obtained by adding mineral oil, paraffin oil, naphthenic oil or the like as an oil-extended component to rubber.
  • oil-extended 50 type means the total amount of rubber component. Of 100% by weight means that 50% by weight of an oil component such as oil is blended.
  • an oil-extended EPDM may be used.
  • an EPDM that is a non-oil-extended EPDM and satisfies the above (1) and (2) is used, a rubber composition is used. This is preferable because the processing stability of the rubber and the dynamic ratio of the vulcanized rubber can be improved in a balanced manner.
  • non-oil-extended EPDM means “the blending amount of oil components such as oil is 0 wt% when the total amount of rubber components is 100 wt%”.
  • the rubber composition for vibration-proof rubber according to the present invention may contain silica, a silane coupling agent, oil and sulfur in addition to the above EPDM.
  • silica wet silica, dry silica, sol-gel silica, surface-treated silica or the like used for usual rubber reinforcement is used. Of these, wet silica is preferable. These may be used alone or in combination of two or more.
  • the compounding amount of silica in the rubber composition is preferably 12 to 24 parts by weight, and more preferably 12 to 15 parts by weight when the total amount of the rubber component containing EPDM is 100 parts by weight.
  • a silane coupling agent may be added to improve the dispersibility of silica in the rubber composition.
  • the silane coupling agent include sulfides such as bis- (3- (triethoxysilyl) propyl) tetrasulfide, mercaptos such as 3-mercaptopropyltrimethoxysilane, aminos such as 3-aminopropyltrimethoxysilane, A vinyl-based silane coupling agent such as vinyltriethoxysilane is usually used. These may be used singly or in combination of two or more.
  • the compounding amount of the silane coupling agent in the rubber composition part is preferably 8 to 12% by weight when the total amount of silica is 100% by weight.
  • carbon black may be blended in the rubber composition.
  • examples of carbon black include SAF, ISAF, HAF, FEF, GPF, and SRF. These may be used singly or in combination of two or more.
  • the amount of carbon black to be blended is not particularly limited. For example, when the total amount of rubber components including EPDM is 100 parts by weight, about 30 to 90 parts by weight can be exemplified.
  • Sulfur may be normal sulfur for rubber, and for example, powdered sulfur, precipitated sulfur, insoluble sulfur, highly dispersible sulfur and the like can be used.
  • the sulfur content in the rubber composition for vibration-proof rubber according to the present invention is 0.5 to 2.5 parts by weight with respect to 100 parts by weight of the rubber component. If the sulfur content is less than 0.5 parts by weight, the dynamic ratio of the vulcanized rubber increases and the durability tends to deteriorate. On the other hand, when the sulfur content exceeds 2.5 parts by weight, the heat resistance tends to deteriorate.
  • the sulfur content relative to 100 parts by weight of the rubber component is preferably 0.75 to 1.2 parts by weight.
  • oil may be blended in the rubber composition.
  • the hardness of the vibration-proof rubber finally obtained can be adjusted by appropriately adjusting the blending amount of the oil.
  • the oil paraffinic, naphthenic and aromatic types can be used.
  • the amount of oil blended can be varied according to the hardness of the finally obtained anti-vibration rubber. For example, when the total amount of rubber components including EPDM is 100 parts by weight, it is appropriately adjusted within the range of 21 to 74 parts by weight. Is possible.
  • the rubber composition for anti-vibration rubber according to the present invention together with the rubber component containing the above EPDM, silica, silane coupling agent and sulfur, carbon black, oil, zinc oxide, stearic acid, vulcanization accelerator, vulcanization accelerator Additives usually used in the rubber industry such as auxiliary agents, vulcanization retarders, anti-aging agents, reversion inhibitors, softening agents such as waxes, processing aids, etc., as long as the effects of the present invention are not impaired. It can be blended and used.
  • vulcanization accelerator As the vulcanization accelerator, sulfenamide vulcanization accelerator, thiuram vulcanization accelerator, thiazole vulcanization accelerator, thiourea vulcanization accelerator, guanidine vulcanization, which are usually used for rubber vulcanization. Vulcanization accelerators such as accelerators and dithiocarbamate vulcanization accelerators may be used alone or in admixture as appropriate. Considering the rubber physical properties and durability after vulcanization, the blending amount of the vulcanization accelerator with respect to 100 parts by weight of the rubber component is preferably 0.5 to 2 parts by weight.
  • an aromatic amine-based anti-aging agent an aromatic amine-based anti-aging agent, an amine-ketone-based anti-aging agent, a dithiocarbamate-based anti-aging agent, a thiourea-based anti-aging agent, etc., which are usually used for rubber in addition to a phenol-based anti-aging agent May be used as needed.
  • the blending amount of the anti-aging agent with respect to 100 parts by weight of the rubber component is preferably 0 to 3 parts by weight.
  • the rubber composition for vibration-proof rubber comprises carbon rubber, oil, zinc oxide, stearic acid, vulcanization accelerator, vulcanization accelerator together with the rubber component containing the above EPDM, silica, silane coupling agent and sulfur.
  • Additives normally used in the rubber industry such as auxiliaries, vulcanization retarders, anti-aging agents, vulcanization reversion inhibitors, softeners such as waxes, processing aids, ordinary ingredients such as Banbury mixers, kneaders, rolls, etc. It can be obtained by kneading using a kneader used in the rubber industry.
  • the blending method of each of the above components is not particularly limited, and blending components other than vulcanizing components such as sulfur and a vulcanization accelerator are previously kneaded to form a master batch, and the remaining components are added and further kneaded. Any of a method, a method of adding and kneading each component in an arbitrary order, a method of adding all components simultaneously and kneading may be used.
  • anti-vibration rubber includes anti-vibration rubber for automobiles such as engine mounts, torsional dampers, body mounts, cap mounts, member mounts, strut mounts, and muffler mounts, as well as anti-vibration rubbers for railway vehicles and industrial machines. It can be suitably used for vibration isolation and isolation rubber for rubber, building isolation rubber, and isolation rubber bearings, and is particularly useful as a component for automotive vibration isolation rubber that requires heat resistance such as engine mounts. is there.
  • the rubber composition for vibration-proof rubber comprises ⁇ 1> an ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber, silica, a silane coupling agent, and sulfur, and the ethylene- ⁇ -olefin-
  • the non-conjugated diene copolymer rubber has an ethylene content of 50% by weight or more and a Mooney viscosity (ML 1 + 4 (125 ° C.)) of 65 or more, and the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber is
  • the amount of silica is 12 to 24 parts by weight and the amount of sulfur is 0.75 to 2.5 parts by weight.
  • the rubber composition for vibration-proof rubber according to the present invention contains ⁇ 2> ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber, silica, silane coupling agent, oil and sulfur, and the ethylene- ⁇
  • the olefin-nonconjugated diene copolymer rubber has an ethylene content of 50% by weight or more and a Mooney viscosity (ML 1 + 4 (125 ° C.)) of 65 or more.
  • the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber When the total amount of rubber components including the combined rubber is 100 parts by weight, the amount of silica is 12 to 24 parts by weight, the amount of sulfur is 0.75 to 2.5 parts by weight, and the amount of oil is 21 to 21 parts by weight. It is preferably 38 parts by weight.
  • the rubber composition for vibration-proof rubber according to the present invention has an ethylene content of 50% by weight or more and a Mooney viscosity (ML 1 + 4 (125 ° C.)) when the total amount of ⁇ 3> rubber components is 100% by weight. It is preferable to contain 100% by weight of an ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber having an A of 65 or more.
  • the ethylene content is 60% by weight or more and the Mooney viscosity (ML 1 + 4 (125 ° C.))
  • the content of the ethylene- ⁇ -olefin-nonconjugated diene copolymer rubber having a rubber content of 65 or more is 100% by weight and the total amount of the rubber component is 100 parts by weight, 12 to 24 parts by weight of silica and 1% of sulfur It is preferable to contain less than 2 parts by weight.
  • EPDM EP33 ethylene content 52% by weight, ML 1 + 4 (125 ° C.) 28, DN 8.1% by weight
  • JSR EP57C ethylene content 67% by weight, ML 1 + 4 (125 ° C.) 58, DN 4.5% by weight
  • JSR EPT3072 ethylene content 64 wt%, ML 1 + 4 (125 ° C) 51, DN 5.4 wt%, oil extended 40 parts by weight
  • EP96 ethylene content 66 wt%, ML 1 + 4 (125 ° C) 61, DN 5.8% by weight, oil extended 50 parts by weight
  • IPSR 5565 ethylene content 50% by weight, ML 1 + 4 (125 ° C.) 65, DN 7.5% by weight
  • JSR IP4770 ethylene content 70% by weight
  • Dow Inc. b) carbon black GPF Tokai carbon Co. SR -HF Nippon Steel & Carbon Co., Ltd.
  • Paraffinic oil Paraffinic oil "Process oil PW-380", Idemitsu Kosan Co., Ltd.
  • Vulcanization accelerator A) Vulcanization accelerator (CZ) Sulfenamide vulcanization accelerator Agent N-Cyclohexyl-2-benzothiazolylsulfenamide “Noxeller CZ” manufactured by Ouchi Shinsei Chemical Industry Co., Ltd.
  • Vulcanization accelerator (M) Thiazole vulcanization accelerator 2-mercaptobenzothiazole “Noxeller M- P (M) ”, manufactured by Ouchi Shinsei Chemical Industry Co., Ltd.
  • C Vulcanization accelerator (TT) thiuram compound tetramethylthiuram disulfide“ Noxeller TT ”, manufactured by Ouchi Shinsei Chemical Industry Co., Ltd.
  • D Vulcanization accelerator (PX) Dithiocarbamate-based zinc N-ethyl-N-phenyldithiocarbamate “Noxeller PX”, manufactured by Ouchi Shinsei Chemical Co., Ltd. i) Vulcanizing agent (R) “Barnock R”, Ouchi Shinsei Chemical Co., Ltd. j) Vulcanization retarder (CTP) “Retarder CTP”, manufactured by Toray Industries, Inc.
  • (Dynamic magnification) (Dynamic spring constant (Kd)) / (Static spring constant (Ks))
  • the dynamic magnification was calculated based on the calculated dynamic spring constant and static spring constant.
  • the dynamic magnification of the Example with respect to each comparative example was evaluated as a dynamic magnification INDEX. Specifically, for Examples 1 to 3, index evaluation is performed when the dynamic magnification of Comparative Example 1 is 100, and for Example 4, index evaluation is performed when the dynamic magnification of Comparative Example 2 is 100.
  • Example 5 index evaluation is performed when the dynamic magnification of Comparative Example 3 is 100, for Example 6, index evaluation is performed when the dynamic magnification of Comparative Example 4 is 100, and for Example 7, Index evaluation was performed when the dynamic magnification of Comparative Example 5 was set to 100. The results are shown in Table 1.

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Abstract

L'invention concerne une composition de caoutchouc pour caoutchouc antivibratoire qui contient un caoutchouc de copolymère d'éthylène-α-oléfine-diène non conjugué, de la silice, un agent de couplage de silane et du soufre, le caoutchouc de copolymère d'éthylène-α-oléfine-diène non conjugué ayant une teneur en éthylène d'au moins 50 % en poids et ayant une viscosité Mooney (ML1 +4 (125 °C)) d'au moins 65, et la teneur en silice étant comprise entre 12 et 24 parties en poids et la teneur en soufre étant comprise entre 0,75 et 2,5 parties en poids par rapport à 100 parties en poids de la quantité totale de composants de caoutchouc comprenant le caoutchouc de copolymère d'éthylène-α-oléfine-diène non conjugué. Le caoutchouc de copolymère d'éthylène-α-oléfine-diène non conjugué est de préférence contenu à hauteur de 100 % en poids par rapport à 100 % en poids de la quantité totale des composants de caoutchouc.
PCT/JP2017/037835 2016-12-16 2017-10-19 Composition de caoutchouc pour caoutchouc antivibratoire WO2018110078A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2016244422A JP6860337B2 (ja) 2016-12-16 2016-12-16 防振ゴム用ゴム組成物
JP2016244429A JP2018095809A (ja) 2016-12-16 2016-12-16 防振ゴム用ゴム組成物
JP2016244377A JP6803219B2 (ja) 2016-12-16 2016-12-16 防振ゴム用ゴム組成物
JP2016-244422 2016-12-16
JP2016-244444 2016-12-16
JP2016-244377 2016-12-16
JP2016244444A JP6860338B2 (ja) 2016-12-16 2016-12-16 防振ゴム用ゴム組成物
JP2016-244429 2016-12-16

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05239289A (ja) * 1991-12-19 1993-09-17 Degussa Ag 加硫可能ゴム組成物およびその加硫方法
JP2006052282A (ja) * 2004-08-11 2006-02-23 Dow Corning Toray Co Ltd 防振・免振用のゴム組成物およびその製造方法、並びに、防振・免振用ゴム製品およびその成形方法
JP2006052281A (ja) * 2004-08-11 2006-02-23 Dow Corning Toray Co Ltd 防振・免振用のゴム組成物およびその調製方法、並びに、防振・免振用ゴム製品およびその製造方法
JP2010270835A (ja) * 2009-05-21 2010-12-02 Kurashiki Kako Co Ltd 防振部材

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05239289A (ja) * 1991-12-19 1993-09-17 Degussa Ag 加硫可能ゴム組成物およびその加硫方法
JP2006052282A (ja) * 2004-08-11 2006-02-23 Dow Corning Toray Co Ltd 防振・免振用のゴム組成物およびその製造方法、並びに、防振・免振用ゴム製品およびその成形方法
JP2006052281A (ja) * 2004-08-11 2006-02-23 Dow Corning Toray Co Ltd 防振・免振用のゴム組成物およびその調製方法、並びに、防振・免振用ゴム製品およびその製造方法
JP2010270835A (ja) * 2009-05-21 2010-12-02 Kurashiki Kako Co Ltd 防振部材

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