WO2020017001A1 - Composition de caoutchouc pour tuyau - Google Patents
Composition de caoutchouc pour tuyau Download PDFInfo
- Publication number
- WO2020017001A1 WO2020017001A1 PCT/JP2018/027143 JP2018027143W WO2020017001A1 WO 2020017001 A1 WO2020017001 A1 WO 2020017001A1 JP 2018027143 W JP2018027143 W JP 2018027143W WO 2020017001 A1 WO2020017001 A1 WO 2020017001A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hose
- rubber
- mass
- rubber composition
- present
- Prior art date
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 85
- 239000005060 rubber Substances 0.000 title claims abstract description 84
- 239000000203 mixture Substances 0.000 title claims abstract description 76
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 36
- 239000006229 carbon black Substances 0.000 claims abstract description 26
- 239000005977 Ethylene Substances 0.000 claims abstract description 10
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 22
- 229920006229 ethylene acrylic elastomer Polymers 0.000 claims description 16
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 7
- 239000004641 Diallyl-phthalate Substances 0.000 claims description 5
- 239000004760 aramid Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 5
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 claims description 5
- 150000002978 peroxides Chemical class 0.000 claims description 5
- UJAWGGOCYUPCPS-UHFFFAOYSA-N 4-(2-phenylpropan-2-yl)-n-[4-(2-phenylpropan-2-yl)phenyl]aniline Chemical compound C=1C=C(NC=2C=CC(=CC=2)C(C)(C)C=2C=CC=CC=2)C=CC=1C(C)(C)C1=CC=CC=C1 UJAWGGOCYUPCPS-UHFFFAOYSA-N 0.000 claims description 4
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 64
- 230000000694 effects Effects 0.000 description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 14
- 238000001179 sorption measurement Methods 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 9
- 230000032683 aging Effects 0.000 description 9
- 239000000835 fiber Substances 0.000 description 9
- 239000000178 monomer Substances 0.000 description 9
- 239000003963 antioxidant agent Substances 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 239000003431 cross linking reagent Substances 0.000 description 7
- 230000003078 antioxidant effect Effects 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000004073 vulcanization Methods 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 4
- -1 acryl Chemical group 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 4
- 229920005549 butyl rubber Polymers 0.000 description 4
- 229910052740 iodine Inorganic materials 0.000 description 4
- 239000011630 iodine Substances 0.000 description 4
- 235000021355 Stearic acid Nutrition 0.000 description 3
- 229920006231 aramid fiber Polymers 0.000 description 3
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- WROUWQQRXUBECT-UHFFFAOYSA-N 2-ethylacrylic acid Chemical compound CCC(=C)C(O)=O WROUWQQRXUBECT-UHFFFAOYSA-N 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229920003049 isoprene rubber Polymers 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920001470 polyketone Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 150000007934 α,β-unsaturated carboxylic acids Chemical class 0.000 description 2
- ILUAAIDVFMVTAU-OLQVQODUSA-N (1s,2r)-cyclohex-4-ene-1,2-dicarboxylic acid Chemical compound OC(=O)[C@H]1CC=CC[C@H]1C(O)=O ILUAAIDVFMVTAU-OLQVQODUSA-N 0.000 description 1
- WBYWAXJHAXSJNI-VOTSOKGWSA-M .beta-Phenylacrylic acid Natural products [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 1
- UBRWPVTUQDJKCC-UHFFFAOYSA-N 1,3-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC(C(C)(C)OOC(C)(C)C)=C1 UBRWPVTUQDJKCC-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- HEBDGRTWECSNNT-UHFFFAOYSA-N 2-methylidenepentanoic acid Chemical compound CCCC(=C)C(O)=O HEBDGRTWECSNNT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- WBYWAXJHAXSJNI-SREVYHEPSA-N Cinnamic acid Chemical compound OC(=O)\C=C/C1=CC=CC=C1 WBYWAXJHAXSJNI-SREVYHEPSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- XLYMOEINVGRTEX-ARJAWSKDSA-N Ethyl hydrogen fumarate Chemical compound CCOC(=O)\C=C/C(O)=O XLYMOEINVGRTEX-ARJAWSKDSA-N 0.000 description 1
- FANBESOFXBDQSH-UHFFFAOYSA-N Ethyladipic acid Chemical compound CCC(C(O)=O)CCCC(O)=O FANBESOFXBDQSH-UHFFFAOYSA-N 0.000 description 1
- 239000006237 Intermediate SAF Substances 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 150000001253 acrylic acids Chemical class 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229930016911 cinnamic acid Natural products 0.000 description 1
- 235000013985 cinnamic acid Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- XLYMOEINVGRTEX-UHFFFAOYSA-N fumaric acid monoethyl ester Natural products CCOC(=O)C=CC(O)=O XLYMOEINVGRTEX-UHFFFAOYSA-N 0.000 description 1
- NKHAVTQWNUWKEO-UHFFFAOYSA-N fumaric acid monomethyl ester Natural products COC(=O)C=CC(O)=O NKHAVTQWNUWKEO-UHFFFAOYSA-N 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 229920005555 halobutyl Polymers 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000005641 methacryl group Chemical group 0.000 description 1
- NKHAVTQWNUWKEO-IHWYPQMZSA-N methyl hydrogen fumarate Chemical compound COC(=O)\C=C/C(O)=O NKHAVTQWNUWKEO-IHWYPQMZSA-N 0.000 description 1
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- XYGMTBGUABLGQJ-UHFFFAOYSA-N octadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCCCN.CCCCCCCCCCCCCCCCCCN XYGMTBGUABLGQJ-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/18—Layered products comprising a layer of natural or synthetic rubber comprising butyl or halobutyl rubber
-
- 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
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
Definitions
- the present invention relates to a rubber composition for a hose.
- Patent Document 1 disclose a rubber composition using silica and carbon black in combination, and describe that the rubber composition has excellent heat resistance and can be suitably used for hoses. I have.
- an object of the present invention is to provide a rubber composition for a hose which is excellent in heat resistance when formed into a hose, has high hardness and elongation at break, and is excellent in processability.
- excellent in heat resistance when formed into a hose is also simply referred to as “excellent in heat resistance”
- hardness when formed into a hose is also simply referred to as “high hardness”
- the fact that the elongation at break is high when the material is cut is simply referred to as "high elongation at break”.
- the present inventors have conducted intensive studies on the above problems, and as a result, have found that the above problems can be solved by using carbon black and basic silica in a specific amount in combination, and have reached the present invention. That is, the present inventor has found that the above problem can be solved by the following configuration.
- a rubber composition for hoses comprising stearylamine.
- the hose rubber composition according to (1) further comprising a peroxide vulcanizing agent.
- the rubber composition for a hose according to any one of the above (1) to (5) which is a rubber composition for an automotive hose.
- the rubber composition for a hose according to any one of the above (1) to (6) which is a rubber composition for a transmission oil cooler piping hose.
- a hose rubber composition having excellent heat resistance, high hardness and high elongation at break, and excellent workability when formed into a hose is provided.
- a numerical range represented by using “to” means a range including numerical values described before and after “to” as a lower limit and an upper limit.
- each component contained in the rubber composition for hoses of the present invention may be used alone or in combination of two or more.
- the content of that component indicates the total content unless otherwise specified.
- “(meth) acryl” is a notation representing “acryl” or “methacryl”.
- the rubber composition for hoses of the present invention (hereinafter, also referred to as “composition of the present invention”) has 100 parts by mass of a rubber component containing 80% by mass or more of ethylene acrylic rubber, 50 to 90 parts by mass of carbon black, and pH. It contains 7 to 30 parts by mass of 7.5 to 10 basic silica and stearylamine. Since the composition of the present invention has such a configuration, it is considered that the above-described effects can be obtained. Although the reason is not clear, it is speculated that the combined use of carbon black and basic silica in a specific amount forms a strong three-dimensional structure by the structure of carbon black and the structure of basic silica. You. In addition, since the surface of the silica has few functional groups such as acid groups, it is considered that the interaction with a metal such as a Banbury mixer is small and the processability is excellent.
- the rubber component contained in the composition of the present invention contains at least 80% by mass of ethylene acrylic rubber. Therefore, the composition of the present invention is excellent in workability and heat resistance, and has high hardness and elongation at break. Also, when formed into a hose, it has excellent cold resistance, deterioration resistance, stain resistance and light resistance.
- the ethylene acrylic rubber contained in the rubber component is not particularly limited as long as it is a copolymer of ethylene and a (meth) acrylic monomer.
- (meth) acrylic monomer examples include (meth) acrylic (methyl acrylate), ethyl acrylate, n-butyl acrylate, methyl methacrylate, ethyl methacrylate, n-butyl methacrylate and the like.
- acrylic acid esters examples include acrylic acid esters, (meth) acrylic acids such as acrylic acid and methacrylic acid, and the like. These may be used alone or in combination of two or more. Among these, acrylic acid is preferred because it is more excellent in workability and heat resistance, has higher hardness and elongation at break, and also has better cold resistance, deterioration resistance, stain resistance and light resistance when formed into a hose.
- the present invention is superior in processability and heat resistance, higher in hardness and elongation at break, and also excellent in cold resistance, deterioration resistance, stain resistance and light resistance when formed into a hose" according to the present invention. Is more excellent. "
- the ethylene acrylic rubber may be obtained by copolymerizing other monomers in addition to ethylene and a (meth) acrylic monomer.
- the other monomer is preferably an ⁇ , ⁇ -unsaturated carboxylic acid because the effects of the present invention are more excellent.
- Examples of the ⁇ , ⁇ -unsaturated carboxylic acid include maleic anhydride, cis-1,2,3,6-tetrahydrophthalic acid, cinnamic acid, crotonic acid, itaconic acid, 2-ethylacrylic acid, 2-ethylacrylic acid, Examples include propyl acrylic acid, maleic acid, and maleic acid monoesters such as maleic acid monomethyl ester and maleic acid monoethyl ester.
- the ethylene acrylic rubber is preferably a copolymer composed of only ethylene and a (meth) acrylic monomer, because the effects of the present invention are more excellent.
- a copolymer consisting of only ethylene and methyl acrylate is preferable because the effects of the present invention are more excellent.
- the content of the ethylene unit is not particularly limited, but is preferably from 10 to 90 mol%, more preferably from 50 to 80 mol%, because the effects of the present invention are more excellent.
- the content of the (meth) acrylic monomer unit is not particularly limited, but is preferably from 10 to 90 mol%, more preferably from 20 to 50 mol%, because the effects of the present invention are more excellent. % Is more preferable.
- the content of the ethylene acrylic rubber is 80% by mass or more.
- the upper limit of the content of the ethylene acrylic rubber is not particularly limited, and is 100% by mass.
- the rubber component may include other rubber components other than ethylene acrylic rubber.
- Such other rubber components include natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrene butadiene rubber (SBR), acrylonitrile-butadiene copolymer rubber (NBR), butyl rubber (IIR), Halogenated butyl rubber (Br-IIR, Cl-IIR), chloroprene rubber (CR) and the like can be mentioned.
- the weight average molecular weight (Mw) of the rubber component is not particularly limited, but Mw of all rubber components contained in the rubber component is a value measured by gel permeation chromatography in terms of polystyrene, and is 100,000 to 3, It is preferably from 1,000,000 to 2,000,000, more preferably from 150,000 to 2,000,000, and still more preferably from 200,000 to 1,500,000.
- the composition of the present invention contains a specific amount of carbon black. Therefore, the composition of the present invention is excellent in workability and heat resistance, and has high hardness and elongation at break. Also, when formed into a hose, it has excellent cold resistance, deterioration resistance, stain resistance and light resistance.
- the carbon black contained in the composition of the present invention is not particularly limited, and any conventionally known carbon black compounded in the rubber composition can be used.
- the carbon black is, for example, SAF-HS grade, SAF grade, ISAF-HS grade, ISAF grade, ISAF-LS grade, IISAF-HS grade, HAF-HS grade, HAF grade, HAF-LS grade, FEF grade, GPF Grades, various grades such as SRF grade can be used.
- the FEF class is preferable because the effects of the present invention are more excellent.
- the amount of adsorbed iodine of the carbon black is not particularly limited, but is preferably from 10 to 180 mg / g, more preferably from 20 to 60 mg / g, because the effects of the present invention are more excellent.
- the iodine adsorption amount of carbon black is measured according to JIS K6217-1: 2008.
- the nitrogen adsorption specific surface area (N 2 SA) of the carbon black is not particularly limited, but is preferably from 10 to 180 m 2 / g, more preferably from 20 to 60 m 2 / g, because the effects of the present invention are more excellent. Is more preferable.
- the nitrogen adsorption specific surface area (N 2 SA) of carbon black is obtained by measuring the amount of nitrogen adsorbed on the carbon black surface according to JIS K6217-2: 2001 “Part 2: Determination of specific surface area—Nitrogen adsorption method -Single point method.
- DBP absorption amount of the carbon black is not particularly limited, because the effects such as the present invention is more excellent, it is preferably from 50 ⁇ 160cm 3 / g, a 100 ⁇ 140cm 3 / 100g More preferred.
- the DBP absorption is a measure of the ability of carbon black to absorb liquid (DBP), and the larger the value, the larger the structure of carbon black tends to be.
- the DBP absorption is measured according to JIS K6217-4: 2008 "Carbon black for rubber-Basic properties-Part 4: Determination of oil absorption".
- the content of carbon black is 50 to 90 parts by mass based on 100 parts by mass of the rubber component described above. Among them, the amount is preferably 55 to 80 parts by mass because the effect of the present invention is more excellent.
- compositions of the present invention contain a certain amount of basic silica. Therefore, the composition of the present invention is excellent in workability and heat resistance, and has high hardness and elongation at break. Also, when formed into a hose, it has excellent cold resistance, deterioration resistance, stain resistance and light resistance.
- the basic silica is a basic silica having a pH of 7.5 to 10.
- the pH of the basic silica is a value measured according to JIS K5101-17-2.
- Examples of the basic silica include wet silica, dry silica, fumed silica, and diatomaceous earth.
- the basic silica one type of basic silica may be used alone, or two or more types of basic silica may be used in combination.
- the nitrogen adsorption specific surface area (N 2 SA) of the basic silica is not particularly limited, but is preferably 50 to 200 m 2 / g because the effects of the present invention are more excellent.
- the N 2 SA of the silica is a substitute for the surface area of the silica that can be used to adsorb the rubber molecules, and the amount of nitrogen adsorbed on the silica surface is determined according to JIS K6217-2: 2001 “Part 2: How to determine the specific surface area”. -Nitrogen adsorption method-Single point method ".
- the content of the basic silica is 7 to 30 parts by mass based on 100 parts by mass of the rubber component described above. Among them, the amount is preferably 10 to 25 parts by mass because the effects of the present invention are more excellent.
- the composition of the present invention contains stearylamine. Therefore, the composition of the present invention is excellent in workability and heat resistance, and has high hardness and elongation at break. Also, when formed into a hose, it has excellent cold resistance, deterioration resistance, stain resistance and light resistance. It is assumed that the stearylamine has a role as a processing aid.
- the content of the stearylamine is not particularly limited. However, from the reason that the effects of the present invention are more excellent, 0.1 to 10.0 parts by mass with respect to 100 parts by mass of the rubber component described above. Is preferably 0.2 to 5.0 parts by mass, and more preferably 0.2 to 2.0 parts by mass.
- the composition of the present invention can contain components (arbitrary components) other than the above-described components, if necessary.
- Such components include, for example, resins, fillers, silicas other than basic silica, plasticizers (eg, bis [2- (2-butoxyethoxy) ethyl adipate], dioctyl sebacate), softeners, stearylamine
- Other processing aids include stearic acid, zinc oxide, antioxidants, antioxidants, antistatic agents, flame retardants, vulcanizing agents, vulcanization accelerators, adhesion aids, and crosslinking agents.
- the composition of the present invention preferably further contains a vulcanizing agent, because the effects of the present invention and the like are more excellent.
- the vulcanizing agent is preferably a peroxide vulcanizing agent because the effects of the present invention and the like are more excellent.
- the content of the vulcanizing agent is not particularly limited, but is 1 to 20 parts by mass with respect to 100 parts by mass of the rubber component described above because the effect of the present invention is more excellent. , And more preferably 2 to 10 parts by mass.
- the composition of the present invention preferably further contains an antioxidant, because the effects of the present invention are more excellent.
- the antioxidant is preferably 4,4'-bis ( ⁇ , ⁇ -dimethylbenzyl) diphenylamine because the effects of the present invention and the like are more excellent.
- the content of the antioxidant is not particularly limited, but is preferably 0.1 to 10 parts by mass with respect to 100 parts by mass of the above rubber component because the effect of the present invention is more excellent. Preferably, it is 1 to 5 parts by mass.
- the composition of the present invention preferably further contains a cross-linking agent, because the effects of the present invention and the like are more excellent.
- the crosslinking agent is preferably a compound other than a peroxide.
- the crosslinking agent is preferably diallyl phthalate, because the effects of the present invention and the like are more excellent.
- the content of the crosslinking agent is not particularly limited, but is 0.1 to 10 parts by mass with respect to 100 parts by mass of the rubber component described above because the effect of the present invention is more excellent. And more preferably 1 to 5 parts by mass.
- the composition of the present invention has excellent heat resistance, high hardness and elongation at break, and excellent workability, and thus is useful as a rubber composition for hoses for automobiles. Among them, it is particularly useful as a rubber composition for a transmission oil cooler piping hose (TOC piping hose).
- TOC piping hose transmission oil cooler piping hose
- the hose of the present invention is a hose using the composition of the present invention described above. Above all, a hose using the above-described composition of the present invention for the inner layer or the outer layer of a hose having an inner layer, a reinforcing layer, and an outer layer in this order is preferable because the effects of the present invention are more excellent.
- the composition of the present invention may be used for both the inner layer and the outer layer.
- the inner layer can be a single layer or multiple layers. When there are a plurality of inner layers, an interlayer rubber layer or the like may be provided between adjacent inner layers. An interlayer rubber layer or the like may be provided between the inner layer and the reinforcing layer adjacent to the inner layer.
- the reinforcing layer is not particularly limited as long as it can be used for a hose.
- the material used for the reinforcing layer include fibers such as polyester fiber, polyamide fiber, aramid fiber, vinylon fiber, rayon fiber, polyparaphenylene benzobisoxazole fiber, polyketone fiber, polyarylate fiber, and polyketone fiber. Materials; metallic materials such as brass-plated wires and hard steel wires such as galvanized wires. Of these, aramid fibers are preferred because the effects of the present invention are more excellent. That is, the reinforcing layer is preferably a reinforcing layer using aramid fibers (aramid reinforcing layer).
- the shape of the reinforcing layer is not particularly limited. For example, a blade-like or spiral-like thing is mentioned.
- the material of the reinforcing layer can be used alone or in combination of two or more.
- the reinforcing layer may be a single layer or a plurality of layers. When there are a plurality of reinforcing layers, an interlayer rubber layer or the like may be provided between adjacent reinforcing layers.
- the outer layer can be a single layer or multiple layers.
- an interlayer rubber layer or the like may be provided between adjacent outer layers.
- An interlayer rubber layer or the like may be provided between the outer layer and the reinforcing layer adjacent to the outer layer.
- FIG. 1 is a perspective view showing an example of the hose of the present invention by cutting out each layer.
- a hose 1 includes an inner layer 2, a reinforcing layer 3 disposed adjacent to an outer peripheral side of the inner layer 2, and an outer layer 4 disposed adjacent to an outer peripheral side of the reinforcing layer 3.
- the inner layer 2 and the outer layer 4 are manufactured using the composition of the present invention described above.
- the method for producing the hose of the present invention is not particularly limited.
- the following method can be mentioned.
- the above-described composition of the present invention is extruded from a rubber extruder for an inner layer rubber material onto a mandrel to which a release agent has been applied in advance to form an inner layer.
- a reinforcing layer is formed on the inner layer (if there is an adhesive layer, the adhesive layer).
- the method for forming the reinforcing layer is not particularly limited.
- the above-described composition of the present invention is extruded on a reinforcing layer (adhesive layer if an adhesive layer is present) to form an outer layer.
- the hose of the present invention can be manufactured.
- the vulcanization method include steam vulcanization, oven vulcanization (hot air vulcanization), and hot water vulcanization.
- TS b tensile strength at break
- EB elongation at break
- M100 modulus (stress at 100% elongation) [MPa].
- Table 1 TS b, EB, M100
- TS b is larger both EB and M100
- TS b is preferably at least 10.0 MPa
- EB is preferably 200% or more.
- ⁇ Heat resistance> The obtained sheet was subjected to an air heat aging test (175 ° C., 168 hours), and the tensile strength at break (TS b ), elongation at break (EB), and hardness (HS) were evaluated as described above. Then, ⁇ TS b , ⁇ EB and ⁇ HS were obtained from the following equations. Table 1 shows the results. The smaller the absolute value of ⁇ TS b , ⁇ EB and ⁇ HS, the better the heat resistance.
- ⁇ TS b (TS b after air heat aging test-TS b before air heat aging test) / TS b ⁇ 100 (%) before air heat aging test
- ⁇ EB (EB after air heat aging test ⁇ EB before air heat aging test) / EB ⁇ 100 before air heat aging test (%)
- ⁇ HS HS after air heat aging test-HS before air heat aging test
- the resulting rubber composition was evaluated for release from a Banbury mixer according to the following criteria. From the viewpoint of processability, it is preferable to be ⁇ or ⁇ , and more preferably ⁇ . :: Can be easily released. :: Can be released relatively easily. ⁇ : The rubber composition sticks in the Banbury mixer, and it is difficult to release the rubber composition. XX: A large amount of the rubber composition sticks in the Banbury mixer, and it is extremely difficult to release the rubber composition.
- Niteron # 10N (iodine adsorption amount: 41mg / g, nitrogen adsorption specific surface area: 41m 2 / g, DBP absorption amount: 121cm 3 / 100g)
- -Comparative silica 1 Nippseal AQ manufactured by Tosoh Silica (pH: 5.5 to 6.5)
- -Comparative silica 2 Ultrasil VN3 (pH: 6.3) manufactured by Evonik Degussa Basic silica: Tokusil GU manufactured by Tokuyama (pH: 8 to 9, nitrogen adsorption specific surface area: 120 m 2 / g)
- Stearic acid Stearic acid 50S manufactured by Nissin Chemical Co.
- Examples 1 to 6 containing basic silica exhibited high hardness and elongation at break, and excellent heat resistance and workability.
- Examples 1 to 3 in which the content of the antioxidant is 1.5 parts by mass or more based on 100 parts by mass of the rubber component, exhibited more excellent heat resistance ( ⁇ TS b , ⁇ EB).
- the content of the basic silica is 18 parts by mass or less based on 100 parts by mass of the rubber component. Examples 1 and 2 showed better processability.
- Example 2 in which the content of the basic silica was 12 parts by mass or more with respect to 100 parts by mass of the rubber component showed further excellent heat resistance ( ⁇ TS b , ⁇ EB). Further, based on the comparison of Examples 4 to 6 (comparison between the embodiments in which the content of the antioxidant is 1.00 part by mass), the content of carbon black is at least 62 parts by mass with respect to 100 parts by mass of the rubber component. Examples 4 and 5 showed better processability. Among them, Example 4, in which the content of carbon black was 67 parts by mass or more based on 100 parts by mass of the rubber component, showed higher modulus and hardness and more excellent heat resistance ( ⁇ TS b ).
- Comparative Examples 1 to 5 containing no basic silica (containing silica other than basic silica) were insufficient in heat resistance ( ⁇ EB) and processability.
- Comparative Example 6 which contained basic silica but had a content of less than 7 parts by mass with respect to 100 parts by mass of the rubber component, had insufficient heat resistance ( ⁇ EB, ⁇ HS).
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
L'objectif de la présente invention est de fournir une composition de caoutchouc pour un tuyau qui présente une excellente résistance thermique, un allongement élevé à la rupture et une grande dureté, et une excellente aptitude au façonnage lors de sa formation pour réaliser un tuyau. Cette composition de caoutchouc pour un tuyau contient : 100 parties en masse d'un ingrédient de caoutchouc contenant au moins 80 % en masse de caoutchouc acrylique d'éthylène ; 50 à 90 parties en masse de noir de carbone ; 7 à 30 parties en masse de silice basique ayant un pH compris entre 7,5 et 10 ; et de la stéarylamine.
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JP2001192506A (ja) * | 2000-01-13 | 2001-07-17 | Yokohama Rubber Co Ltd:The | ゴム組成物およびその製造方法 |
JP2006316088A (ja) * | 2005-05-10 | 2006-11-24 | Kaneka Corp | アクリルゴム組成物、成形体及び自動車・電気・電子用部品 |
JP2008239713A (ja) * | 2007-03-26 | 2008-10-09 | Nippon Zeon Co Ltd | アクリルゴム組成物および架橋物 |
JP2009091437A (ja) * | 2007-10-05 | 2009-04-30 | Denki Kagaku Kogyo Kk | アクリルゴム組成物 |
JP2009234218A (ja) * | 2008-03-28 | 2009-10-15 | Tokai Rubber Ind Ltd | ホースおよびその製法 |
JP2013127035A (ja) * | 2011-12-19 | 2013-06-27 | Two-One:Kk | 電気絶縁性・難燃性・機械的性質・柔軟性に優れ、回路接点不良を生じない熱伝導性ゴム組成物及び該ゴム組成物からなる成形物、シート及びその製造方法。 |
JP2016216549A (ja) * | 2015-05-15 | 2016-12-22 | 株式会社ニチリン | ゴム組成物及びそれを用いたホース |
WO2018008474A1 (fr) * | 2016-07-05 | 2018-01-11 | デンカ株式会社 | Composition de caoutchouc acrylique |
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2018
- 2018-07-19 WO PCT/JP2018/027143 patent/WO2020017001A1/fr active Application Filing
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2001192506A (ja) * | 2000-01-13 | 2001-07-17 | Yokohama Rubber Co Ltd:The | ゴム組成物およびその製造方法 |
JP2006316088A (ja) * | 2005-05-10 | 2006-11-24 | Kaneka Corp | アクリルゴム組成物、成形体及び自動車・電気・電子用部品 |
JP2008239713A (ja) * | 2007-03-26 | 2008-10-09 | Nippon Zeon Co Ltd | アクリルゴム組成物および架橋物 |
JP2009091437A (ja) * | 2007-10-05 | 2009-04-30 | Denki Kagaku Kogyo Kk | アクリルゴム組成物 |
JP2009234218A (ja) * | 2008-03-28 | 2009-10-15 | Tokai Rubber Ind Ltd | ホースおよびその製法 |
JP2013127035A (ja) * | 2011-12-19 | 2013-06-27 | Two-One:Kk | 電気絶縁性・難燃性・機械的性質・柔軟性に優れ、回路接点不良を生じない熱伝導性ゴム組成物及び該ゴム組成物からなる成形物、シート及びその製造方法。 |
JP2016216549A (ja) * | 2015-05-15 | 2016-12-22 | 株式会社ニチリン | ゴム組成物及びそれを用いたホース |
WO2018008474A1 (fr) * | 2016-07-05 | 2018-01-11 | デンカ株式会社 | Composition de caoutchouc acrylique |
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