WO2019176797A1 - アクリロニトリル・ブタジエンゴム組成物および当該組成物層を含む積層体 - Google Patents
アクリロニトリル・ブタジエンゴム組成物および当該組成物層を含む積層体 Download PDFInfo
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- WO2019176797A1 WO2019176797A1 PCT/JP2019/009447 JP2019009447W WO2019176797A1 WO 2019176797 A1 WO2019176797 A1 WO 2019176797A1 JP 2019009447 W JP2019009447 W JP 2019009447W WO 2019176797 A1 WO2019176797 A1 WO 2019176797A1
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- Prior art keywords
- layer
- vinyl acetate
- ethylene
- acetate copolymer
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- 229920000459 Nitrile rubber Polymers 0.000 title claims abstract description 113
- 239000000203 mixture Substances 0.000 title claims abstract description 71
- 229920001577 copolymer Polymers 0.000 claims description 86
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 62
- 239000005977 Ethylene Substances 0.000 claims description 62
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 19
- 239000005062 Polybutadiene Substances 0.000 claims description 17
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 17
- 229920002857 polybutadiene Polymers 0.000 claims description 17
- 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 claims description 13
- 238000007127 saponification reaction Methods 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract description 17
- 239000000126 substance Substances 0.000 abstract description 16
- 239000000853 adhesive Substances 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 8
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract 5
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical class C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 83
- CPGFMWPQXUXQRX-UHFFFAOYSA-N 3-amino-3-(4-fluorophenyl)propanoic acid Chemical compound OC(=O)CC(N)C1=CC=C(F)C=C1 CPGFMWPQXUXQRX-UHFFFAOYSA-N 0.000 description 27
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 25
- -1 unsaturated silane compound Chemical class 0.000 description 23
- 238000004073 vulcanization Methods 0.000 description 21
- 239000003795 chemical substances by application Substances 0.000 description 15
- 230000003712 anti-aging effect Effects 0.000 description 14
- 238000011156 evaluation Methods 0.000 description 14
- 238000000465 moulding Methods 0.000 description 14
- 239000011787 zinc oxide Substances 0.000 description 13
- 235000014692 zinc oxide Nutrition 0.000 description 13
- 239000004088 foaming agent Substances 0.000 description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 238000004132 cross linking Methods 0.000 description 11
- 238000002156 mixing Methods 0.000 description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 9
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 9
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 9
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 8
- 239000003999 initiator Substances 0.000 description 8
- 239000006057 Non-nutritive feed additive Substances 0.000 description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 7
- 239000000945 filler Substances 0.000 description 7
- 238000005187 foaming Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 7
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 6
- 239000012190 activator Substances 0.000 description 6
- 239000006229 carbon black Substances 0.000 description 6
- 235000019241 carbon black Nutrition 0.000 description 6
- 235000021355 Stearic acid Nutrition 0.000 description 5
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 5
- 239000008117 stearic acid Substances 0.000 description 5
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
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- 230000035699 permeability Effects 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
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- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
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- 229920005989 resin Polymers 0.000 description 3
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- BOOBDAVNHSOIDB-UHFFFAOYSA-N (2,3-dichlorobenzoyl) 2,3-dichlorobenzenecarboperoxoate Chemical compound ClC1=CC=CC(C(=O)OOC(=O)C=2C(=C(Cl)C=CC=2)Cl)=C1Cl BOOBDAVNHSOIDB-UHFFFAOYSA-N 0.000 description 2
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 2
- GWQOYRSARAWVTC-UHFFFAOYSA-N 1,4-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=C(C(C)(C)OOC(C)(C)C)C=C1 GWQOYRSARAWVTC-UHFFFAOYSA-N 0.000 description 2
- ODBCKCWTWALFKM-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhex-3-yne Chemical compound CC(C)(C)OOC(C)(C)C#CC(C)(C)OOC(C)(C)C ODBCKCWTWALFKM-UHFFFAOYSA-N 0.000 description 2
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
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- 239000004902 Softening Agent Substances 0.000 description 2
- NOZAQBYNLKNDRT-UHFFFAOYSA-N [diacetyloxy(ethenyl)silyl] acetate Chemical compound CC(=O)O[Si](OC(C)=O)(OC(C)=O)C=C NOZAQBYNLKNDRT-UHFFFAOYSA-N 0.000 description 2
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- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
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- 150000002148 esters Chemical class 0.000 description 2
- FALCQDAWENTNHF-UHFFFAOYSA-N ethenyl(2-methoxyethoxy)silane Chemical compound COCCO[SiH2]C=C FALCQDAWENTNHF-UHFFFAOYSA-N 0.000 description 2
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- OPQYOFWUFGEMRZ-UHFFFAOYSA-N tert-butyl 2,2-dimethylpropaneperoxoate Chemical compound CC(C)(C)OOC(=O)C(C)(C)C OPQYOFWUFGEMRZ-UHFFFAOYSA-N 0.000 description 2
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- 229960002447 thiram Drugs 0.000 description 2
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical class [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 2
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- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
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- B32B2264/102—Oxide or hydroxide
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- B32B2264/104—Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
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- B32B2307/732—Dimensional properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2597/00—Tubular articles, e.g. hoses, pipes
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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
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
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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
- 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
Definitions
- the present invention relates to an acrylonitrile-butadiene rubber (NBR) composition having improved adhesive strength with an ethylene / vinyl acetate copolymer saponified layer, and lamination of the composition layer with an ethylene / vinyl acetate copolymer saponified layer.
- NBR acrylonitrile-butadiene rubber
- radiator hose for cooling the engine
- drain hose for radiator overflow
- heater hose for indoor heating
- air conditioning drain hose wiper water hose
- roof drain hose for outdoor hose
- hoses such as lactose hose are attached.
- NBR having good oil resistance, heat resistance, and gas permeability resistance is used.
- NBR single layer has insufficient gas permeation resistance.
- NBR layer and an ethylene / vinyl alcohol copolymer layer having better gas barrier properties are laminated (Patent Document 1). Has been proposed.
- the object of the present invention is to develop an NBR composition having excellent adhesive strength between the saponified ethylene / vinyl acetate copolymer layer and a laminate having excellent adhesive strength between the NBR layer and the saponified ethylene / vinyl acetate copolymer layer. There is to do.
- the present invention relates to the following [1] to [6].
- An acrylonitrile / butadiene rubber composition containing 0 to 50 parts by mass of a silane-modified ethylene / vinyl acetate copolymer with respect to 100 parts by mass of acrylonitrile / butadiene rubber and 100 parts by mass of the acrylonitrile / butadiene rubber.
- a laminate comprising a layer made of the acrylonitrile-butadiene rubber composition according to item [4] or item [5] and an ethylene / vinyl acetate copolymer saponified product layer.
- the acrylonitrile / butadiene rubber composition containing the silane-modified ethylene / vinyl acetate copolymer of the present invention has excellent adhesive strength when laminated with the saponified ethylene / vinyl acetate copolymer layer, so that the oil resistance, heat resistance, It can be suitably used for various applications that require gas permeability.
- a laminate having an ethylene / vinyl acetate copolymer layer between an acrylonitrile / butadiene rubber layer and an ethylene / vinyl acetate copolymer saponified layer has excellent adhesive strength between layers, and is oil resistant, heat resistant, and gas resistant. It can be suitably used for various applications that require permeability.
- NBR layer An acrylonitrile-butadiene rubber (hereinafter sometimes abbreviated as “NBR layer”) and an acrylonitrile-butadiene rubber composition (hereinafter abbreviated as “NBR composition”) constituting the laminate of the present invention.
- NBR is generally very high (43% or more), high (36-42%), medium-high (31-35%), medium (25-30%), low (24% or less) depending on the amount of acrylonitrile bound. It is classified into 5 stages, and middle and high are general-purpose types.
- the silane-modified ethylene / vinyl acetate copolymer blended in the NBR according to the present invention is a modified copolymer obtained by graft-modifying an unsaturated silane compound on an ethylene / vinyl acetate copolymer.
- the graft amount of the unsaturated silane compound is usually 0.01 to 5% by weight, preferably 0.02 to 3% by weight.
- the melt flow rate (MFR) of the silane-modified ethylene / vinyl acetate copolymer according to the present invention has a value measured in accordance with JIS K7210 [190 ° C., 2.16 kg load], usually 1.6 to 6.4 g. / 10 minutes, preferably in the range of 1.6 to 4.6 g / 10 minutes.
- the silane-modified ethylene / vinyl acetate copolymer usually has a vinyl acetate content in the copolymer of 5 to 50% by weight, preferably 5 to 40% by weight.
- the melt flow rate (MFR) of the ethylene / vinyl acetate copolymer according to the present invention is a value measured in accordance with JIS K7210 [190 ° C., 2.16 kg load], usually 1.6 to 6.4 g / 10. Min, preferably in the range of 1.6 to 4.6 g / 10 min.
- graft modification can be performed in the presence or absence of a radical initiator. At that time, if the graft modification is performed in the presence of a radical initiator, the unsaturated silane compound can be graft modified efficiently.
- radical initiators organic peroxides, azo compounds and the like are used.
- radical initiators include benzoyl peroxide, dichlorobenzoyl peroxide, dicumyl peroxide, di-t- butyl peroxide, 2,5-dimethyl-2,5- di (peroxide benzoate) hexyne- 3,1,4-bis (t-butylperoxyisopropyl) benzene, lauroyl peroxide, t-butylperacetate, 2,5-dimethyl-2,5-di- (t-butylperoxide) hexyne-3, 2,5 -Dimethyl-2,5-di-di (t-butylperoxide) hexane, t-butylperbenzoate, t-butylperphenylacetate, t-butylperisobutyrate, t-butylper-sec- octoate, t-buty
- dicumyl peroxide, di-t- butyl peroxide, 2,5-dimethyl-2,5- di (t-butylperoxy) hexyne-3, 2,5-dimethyl-2,5- di (t Dialkyl peroxides such as -butylperoxy) hexane and 1,4-bis (t-butylperoxyisopropyl) benzene are preferably used.
- Examples of unsaturated silane compounds to be grafted onto the ethylene / vinyl acetate copolymer include various known compounds such as vinyltrimethoxysilane, vinyltriethoxysilane, vinyl ( ⁇ -methoxyethoxy) silane, and vinyltriacetoxysilane. Examples thereof include acrylic silanes such as vinyl silanes, acryloxypropyltrimethoxysilane, and methacryloxypropyltrimethoxysilane.
- NBR composition In the NBR composition of the present invention, 0 to 50 parts by mass, preferably 2 to 50 parts by mass, more preferably 5 to 20 parts by mass of the silane-modified ethylene / vinyl acetate copolymer with respect to 100 parts by mass of the NBR. Part of the composition.
- the NBR composition of the present invention contains 1.7 to 20 parts by mass, more preferably 3.4 to 10.2 parts by mass of dicumyl peroxide in addition to the silane-modified ethylene / vinyl acetate copolymer.
- the adhesive strength with the layer made of a saponified vinyl copolymer is further improved.
- other components can be added to the NBR according to the present invention within a range that does not impair the effects of the present invention.
- other components include fillers, crosslinking aids, vulcanization accelerators, vulcanization aids, softeners, anti-aging agents, processing aids, activators, heat stabilizers, weathering stabilizers, antistatic agents, You may contain at least 1 sort (s) chosen from a coloring agent, a lubricant, a thickener, a foaming agent, and a foaming auxiliary agent. Also. Each additive may be used individually by 1 type, and may use 2 or more types together.
- the filler blended in the NBR according to the present invention is a known rubber reinforcing agent blended in the NBR, and is usually an inorganic substance called carbon black or inorganic reinforcing agent.
- the filler according to the present invention examples include Asahi # 55G, Asahi # 60G (manufactured by Asahi Carbon Co., Ltd.), seast (SRF, GPF, FEF, MAF, HAF, ISAF, SAF, FT, MT).
- Carbon black manufactured by Tokai Carbon Co., Ltd.
- silica activated calcium carbonate, fine talc, fine powder silicic acid, light calcium carbonate, Heavy calcium carbonate, talc, clay and the like can be mentioned.
- fillers may be used alone or as a mixture of two or more.
- silica such as hydrophilic silica and hydrophobic silica, carbon black, light calcium carbonate, heavy calcium carbonate, talc, clay and the like are preferably used.
- the NBR according to the present invention contains a filler, it is usually added in an amount of 100 to 300 parts by mass, preferably 100 to 250 parts by mass with respect to 100 parts by mass of the NBR.
- crosslinking aid When dicumyl peroxide is used as the crosslinking agent, a crosslinking aid may be used in combination.
- crosslinking aids include sulfur; quinone dioxime crosslinking aids such as p-quinonedioxime; acrylic crosslinking aids such as ethylene glycol dimethacrylate and trimethylolpropane trimethacrylate; diallyl phthalate and triallyl isocyanurate.
- Allyl-based crosslinking aids such as: maleimide-based crosslinking aids; divinylbenzene; zinc oxide (for example, ZnO # 1 and two types of zinc oxide (JIS standard (K-1410)), manufactured by Hux Itec Corp.), magnesium oxide, Examples thereof include zinc oxide (for example, zinc oxide such as “META-Z102” (trade name; manufactured by Inoue Lime Industry Co., Ltd.)), and metal oxides such as active zinc oxide.
- the blending amount of the crosslinking aid in NBR is usually 0.5 to 10 mol, preferably 0.5 to 7 mol, more preferably 1 to 6 with respect to 1 mol of dicumyl peroxide. Is a mole.
- Examples of the vulcanization accelerator according to the present invention include N-cyclohexyl-2-benzothiazole sulfenamide, N-oxydiethylene-2-benzothiazole sulfenamide, N, N′-diisopropyl-2-benzothiazole sulfenamide.
- the blending amount of these vulcanization accelerators in NBR is generally 0.1 to 20 parts by mass, preferably 0.2 to 15 parts by mass, more preferably 100 parts by mass of NBR. Is 0.5 to 10 parts by mass.
- the blending amount of the vulcanization accelerator is within the above range, NBR exhibits excellent crosslinking characteristics without blooming to the surface of the resulting laminate.
- a sulfur compound is used as the crosslinking agent, a vulcanization aid can be used in combination.
- Examples of the vulcanization aid according to the present invention include, for example, zinc oxide (for example, ZnO # 1 and two types of zinc oxide, manufactured by Hux Itec Corp.), magnesium oxide, zinc white (for example, “META-Z102” (trade name) Zinc oxide such as Inoue Lime Industry Co., Ltd.).
- zinc oxide for example, ZnO # 1 and two types of zinc oxide, manufactured by Hux Itec Corp.
- magnesium oxide for example, “META-Z102” (trade name) Zinc oxide such as Inoue Lime Industry Co., Ltd.
- the blending amount of the vulcanization aid in the NBR composition is usually 1 to 20 parts by mass with respect to 100 parts by mass of NBR.
- Examples of the softener according to the present invention include petroleum softeners such as process oil, lubricating oil, paraffin oil, liquid paraffin, petroleum asphalt, and petroleum jelly; coal tar softeners such as coal tar; castor oil, linseed oil, Fatty oil-based softeners such as rapeseed oil, soybean oil and coconut oil; waxes such as beeswax and carnauba wax; naphthenic acid, pine oil, rosin or derivatives thereof; synthetic high terpene resin, petroleum resin, coumarone indene resin, etc.
- petroleum softeners such as process oil, lubricating oil, paraffin oil, liquid paraffin, petroleum asphalt, and petroleum jelly
- coal tar softeners such as coal tar
- castor oil, linseed oil, Fatty oil-based softeners such as rapeseed oil, soybean oil and coconut oil
- waxes such as beeswax and carnauba wax
- naphthenic acid pine oil,
- ester softeners such as dioctyl phthalate and dioctyl adipate
- other examples include microcrystalline wax, liquid polybutadiene, modified liquid polybutadiene, hydrocarbon synthetic lubricating oil, tall oil, and sub (factis). Petroleum softeners are preferred, and process oils are particularly preferred.
- the blending amount of the softening agent is generally 2 to 100 parts by mass, preferably 10 to 100 parts by mass with respect to 100 parts by mass of NBR.
- Anti-aging agent stabilizer
- an anti-aging agent stabilizer
- examples of such anti-aging agents include conventionally known anti-aging agents such as amine-based anti-aging agents, phenol-based anti-aging agents, and sulfur-based anti-aging agents.
- antioxidants examples include aromatic secondary amine antioxidants such as phenylbutylamine and N, N-di-2-naphthyl-p-phenylenediamine; dibutylhydroxytoluene, tetrakis [methylene (3 , 5-di-t-butyl-4-hydroxy) hydrocinnamate] methane-based phenolic antioxidants; bis [2-methyl-4- (3-n-alkylthiopropionyloxy) -5-t-butylphenyl Thioether-based anti-aging agents such as sulfide; dithiocarbamate-based anti-aging agents such as nickel dibutyldithiocarbamate; 2-mercaptobenzoylimidazole, 2-mercaptobenzimidazole, zinc salt of 2-mercaptobenzimidazole, dilaurylthiodipropio Nate, distearyl thiodipropio There is a sulfur-based anti-aging agent
- the blending amount of the anti-aging agent is usually 0.3 to 10 parts by mass, preferably 0.5 to 7.0 parts per 100 parts by mass of NBR. Part by mass.
- the blending amount of the anti-aging agent is within the above range, there is no bloom on the surface of the obtained laminate, and the occurrence of vulcanization inhibition can be further suppressed.
- processing aids As processing aids according to the present invention, those generally blended with rubber as processing aids can be widely used. Specific examples include ricinoleic acid, stearic acid, palmitic acid, lauric acid, barium stearate, zinc stearate, calcium stearate, zinc laurate or esters. Of these, stearic acid is preferred.
- the NBR according to the present invention contains a processing aid, it can be appropriately blended in an amount of usually 1 to 3 parts by mass with respect to 100 parts by mass of NBR.
- a blending amount of the processing aid within the above range is preferable because excellent processability such as kneading processability, extrusion processability, and injection moldability is achieved.
- the processing aid may be a single type or two or more types.
- activator examples include amines such as di-n-butylamine, dicyclohexylamine, and monoelaanolamine; diethylene glycol, polyethylene glycol, lecithin, triarylate melilate, aliphatic carboxylic acid, and aromatic carboxylic acid.
- Activators such as zinc compounds; zinc peroxide preparations; kutadecyltrimethylammonium bromide, synthetic hydrotalcite, and special quaternary ammonium compounds.
- the compounding amount of the activator is usually 0.2 to 10 parts by mass, preferably 0.3 to 5 parts by mass with respect to 100 parts by mass of NBR. .
- the laminate formed using the NBR according to the present invention may be a non-foamed body or a foamed body.
- the NBR composition preferably contains a foaming agent.
- any commercially available foaming agent is preferably used.
- foaming agents include inorganic foaming agents such as sodium bicarbonate, sodium carbonate, ammonium bicarbonate, ammonium carbonate, and ammonium nitrite; N, N′-dinitrosotephthalamide, N, N′-dinitroso Nitroso compounds such as pentamethylenetetramine; azo compounds such as azodicarbonamide, azobisisobutyronitrile, azocyclohexylnitrile, azodiaminobenzene, barium azodicarboxylate; benzenesulfonyl hydrazide, toluenesulfonyl hydrazide, p, p'- Sulfonylhydrazide compounds such as oxybis (benzenesulfonylhydrazide) diphenylsulfone-3,3'-disulfonylhydra
- the blending amount of the foaming agent is appropriately selected depending on the performance required for the laminate produced from NBR, but usually with respect to 100 parts by weight of NBR. It is used in a proportion of 0.5 to 30 parts by mass, preferably 1 to 20 parts by mass.
- a foaming aid may be used together with a foaming agent.
- the addition of the foaming aid is effective for adjusting the decomposition temperature of the foaming agent and making the bubbles uniform.
- Specific examples of the foaming aid include organic acids such as salicylic acid, phthalic acid, stearic acid, and oxalic acid, urea, and derivatives thereof.
- the blending amount of the foaming aid is usually 1 to 100 parts by weight, preferably 2 to 80 parts by weight with respect to 100 parts by weight of the foaming agent. Used in
- the saponified ethylene / vinyl acetate copolymer constituting the laminate of the present invention is a copolymer of ethylene and vinyl alcohol, also called an ethylene / vinyl alcohol copolymer.
- the ethylene / vinyl acetate copolymer saponified product according to the present invention is not particularly limited, but usually has an ethylene content of 20 to 50 mol%, preferably 24 to 35 mol%.
- the saponified ethylene / vinyl acetate copolymer according to the present invention is not particularly limited in MFR (load: 2160 g, measurement temperature: 190 ° C.) as long as it has melt extrusion moldability. It is in the range of ⁇ 6.4 g / 10 minutes.
- the ethylene / vinyl acetate copolymer saponified product according to the present invention is specifically manufactured and sold by Kuraray Co., Ltd. under the product name EVAL and from Nippon Synthetic Chemical Co., Ltd. under the product name Soarnol.
- the ethylene / vinyl acetate copolymer constituting the laminate of the present invention is a copolymer of ethylene and vinyl acetate, and the content of vinyl acetate present in the copolymer is usually present in the copolymer.
- the vinyl acetate content is usually in the range of 5-50% by weight, preferably 5-40% by weight.
- the melt flow rate (MFR) of the ethylene / vinyl acetate copolymer according to the present invention is a value measured in accordance with JIS K7210 [190 ° C., 2.16 kg load], usually 1.6 to 6.4 g / 10. Min, preferably in the range of 1.6 to 4.6 g / 10 min.
- the ethylene / vinyl acetate copolymer according to the present invention may be a modified copolymer obtained by graft-modifying an unsaturated silane compound.
- the amount of the unsaturated silane compound grafted is usually 0.01 to 5% by weight, preferably 0.02 to 3% by weight.
- the modified copolymer according to the present invention can be obtained by various known modification methods, for example, by graft-modifying an ethylene / vinyl acetate copolymer in the presence or absence of a radical initiator. At that time, if the graft modification is performed in the presence of a radical initiator, the unsaturated silane compound can be graft modified efficiently.
- radical initiators organic peroxides, azo compounds and the like are used.
- radical initiators include benzoyl peroxide, dichlorobenzoyl peroxide, dicumyl peroxide, di-t- butyl peroxide, 2,5-dimethyl-2,5- di (peroxide benzoate) hexyne- 3,1,4-bis (t-butylperoxyisopropyl) benzene, lauroyl peroxide, t-butylperacetate, 2,5-dimethyl-2,5-di- (t-butylperoxide) hexyne-3, 2,5 -Dimethyl-2,5-di-di (t-butylperoxide) hexane, t-butylperbenzoate, t-butylperphenylacetate, t-butylperisobutyrate, t-butylper-sec- octoate, t-buty
- dicumyl peroxide, di-t- butyl peroxide, 2,5-dimethyl-2,5- di (t-butylperoxy) hexyne-3, 2,5-dimethyl-2,5- di (t Dialkyl peroxides such as -butylperoxy) hexane and 1,4-bis (t-butylperoxyisopropyl) benzene are preferably used.
- Examples of unsaturated silane compounds to be grafted onto the ethylene / vinyl acetate copolymer include various known compounds such as vinyltrimethoxysilane, vinyltriethoxysilane, vinyl ( ⁇ -methoxyethoxy) silane, and vinyltriacetoxysilane. Examples thereof include acrylic silanes such as vinyl silanes, acryloxypropyltrimethoxysilane, and methacryloxypropyltrimethoxysilane.
- the laminate of the present invention is a laminate in which the NBR composition layer and the ethylene / vinyl acetate copolymer saponified product layer are laminated.
- the thickness of the NBR composition layer and the ethylene / vinyl acetate copolymer saponification layer constituting the laminate of the present invention is not particularly limited, but the NBR composition layer is usually 0.1 to 30 mm.
- the ethylene / vinyl acetate copolymer saponified product layer is usually 0.1 to 30 mm, preferably 1 to 5 mm.
- the thickness of the entire laminate is not particularly limited, but is usually 1 to 31 mm, preferably 5 to 20 mm.
- the laminate of the present invention is a laminate in which the NBR layer and the ethylene / vinyl acetate copolymer saponified layer are laminated via the ethylene / vinyl acetate copolymer layer.
- the NBR layer constituting the laminate includes the NBR composition layer.
- the thickness of the NBR layer and the saponified ethylene / vinyl acetate copolymer layer constituting the laminate of the present invention is not particularly limited, but the NBR layer is usually 0.1 to 30 mm, preferably Is from 1 to 5 mm, and the saponified ethylene / vinyl acetate copolymer layer is usually from 0.1 to 30 mm, preferably from 1 to 5 mm.
- the thickness of the ethylene / vinyl acetate copolymer layer is not particularly limited, but is usually in the range of 30 to 300 ⁇ m, preferably 30 to 250 ⁇ m.
- the thickness of the entire laminate is not particularly limited, but is usually 1 to 31 mm, preferably 5 to 20 mm.
- the laminate of the present invention is formed by various known molding methods, specifically, for example, by coextrusion molding of NBR and saponified ethylene / vinyl acetate copolymer using an ethylene / vinyl acetate copolymer as an intermediate layer.
- Lamination method, NBR, ethylene / vinyl acetate copolymer and ethylene / vinyl acetate copolymer saponified product, respectively, after extrusion or press molding, NBR layer and ethylene / vinyl acetate copolymer saponified product layer Are laminated via an ethylene / vinyl acetate copolymer layer, an ethylene / vinyl acetate copolymer layer is extruded and laminated onto an NBR layer or an ethylene / vinyl acetate copolymer saponified layer, and then an ethylene / vinyl acetate copolymer is laminated.
- the product can be obtained by a method of laminating a polymer saponified material layer or an NBR layer, or various molding methods such as injection
- the laminate of the present invention includes, for example, a method of coextruding an NBR composition and an ethylene / vinyl acetate copolymer saponified product to form a laminate, and an NBR and ethylene / vinyl acetate copolymer saponified product.
- a method of coextruding an NBR composition and an ethylene / vinyl acetate copolymer saponified product to form a laminate and an NBR and ethylene / vinyl acetate copolymer saponified product.
- a method of laminating an NBR composition layer and an ethylene / vinyl acetate copolymer saponified material layer, or various molding processing methods such as injection molding, calender molding, and hollow molding It can be set as a laminated body.
- the laminate of the present invention has various uses that require oil resistance, heat resistance, and gas permeation resistance, such as automobile fuel piping tubes or hoses, automotive cooling system piping tubes or hoses, automotive radiator hoses, brake hoses, Air conditioner hoses, wire covering materials, optical fiber covering materials, tubes, hoses, agricultural films, linings, architectural interior materials (wallpapers, etc.), laminated steel sheet films, sheets, automotive radiator tanks, chemical bottles, chemical tanks It is suitably used as tanks such as chemical liquid containers and gasoline tanks. Since the laminated structure of the present invention has low fuel permeability, it is particularly useful as a tube or hose for automobile fuel piping.
- the EVOH film was dried under reduced pressure at 100 ° C. for 3 hours before being laminated with NBR and stored in a package container.
- Example 1 (Preparation of NBR composition)
- the NBR was masticated for 30 seconds using a BB-2 type Banbury mixer (manufactured by Kobe Steel), and then 5 parts by mass of zinc oxide (Inoue with respect to 100 parts by mass of NBR) Lime Industry Co., Ltd.), 40 parts by mass of FEF carbon black (Asahi # 60UG, Asahi Carbon Co., Ltd.) and 1 part by mass of stearic acid were kneaded at 140 ° C. for 2 minutes. Thereafter, the ram was raised and cleaned, and further kneaded for 1 minute and discharged at about 150 ° C. to obtain a first-stage formulation.
- the composition obtained in the first stage was mixed with an 8-inch roll (manufactured by Nippon Roll Co., Ltd., front roll surface temperature 50 ° C., rear roll surface temperature 50 ° C., front roll Of N-tert-butyl-2-benzothiazolylsulfenamide (Noxeller NS-P, Ouchi Shinsei Co., Ltd.) )) And 1.5 parts by mass of sulfur were added and kneaded for 10 minutes to obtain an uncrosslinked NBR composition (NBR formulation).
- NBR formulation uncrosslinked NBR composition
- the EVOH film (Layer 3) that was dried in a vacuum state at 110 ° C. for 3 hours was cut into the main press dimensions (15 cm ⁇ 15 cm ⁇ t 1 mm).
- a film (layer 2) having a thickness of 250 ⁇ m was prepared using modified EVA.
- each sheet (layer 1), film (layer 3) and film (layer 2) were superposed with layer (2) as an intermediate layer.
- a layer (1), a layer (2) with a Lumirror film (t 0.2 mm) sandwiched between a part of the layers (width 3 cm, length 15 cm: the gripping distance at the peeling test) ) And layer (3), followed by pressing the overlapped sheet and film with a part of the Lumirror film sandwiched between them at 180 ° C. for 10 minutes using a 100-ton press molding machine. And the NBR sheet was crosslinked to obtain a laminate having a thickness of 2 mm.
- the Lumirror film is removed from the obtained laminate, and an NBR composition sheet [Layer (1)] and a modified EVA layer or an EVA-1 layer [Layer (2)], a modified EVA layer or an EVA-1 layer [ Layer (2)] and the EVOH layer [Layer (3)] are peeled off by hand, and the peelability (adhesiveness) is set to 1 without bonding, and the state where it cannot be peeled by hand is firmly bonded.
- the evaluation was made in 5 stages from 1 to 5, and the state of the EVOH layer was observed.
- Example 2 A laminated body was obtained in the same manner as in Example 1 except that EVA-1 was used instead of the modified EVA used in Example 1. The evaluation results are shown in Table 1.
- Example 1 In Example 1, a sheet (layer 1) and a film (layer 3) were directly laminated to obtain a laminate without using the modified EVA used for the intermediate layer. The evaluation results are shown in Table 1.
- Example 3 A laminate obtained in the same manner as in Example 1 except that dicumyl peroxide 40% masterbatch (DCP-40C, manufactured by NOF Corporation) was used instead of Noxeller NS-P and sulfur used in Example 1. Got. The evaluation results are shown in Table 1.
- Example 4 A laminated body was obtained in the same manner as in Example 3 except that EVA-1 was used instead of the modified EVA used in Example 3. The evaluation results are shown in Table 1.
- Example 3 a sheet (layer 1) and a film (layer 3) were directly laminated without using the modified EVA used for the intermediate layer to obtain a laminate. The evaluation results are shown in Table 1.
- Example 5 (Preparation of NBR composition)
- the NBR was masticated for 30 seconds using a BB-2 type Banbury mixer (manufactured by Kobe Steel), and then 10 parts by mass of silane-modified EVA with respect to 100 parts by mass of NBR.
- the ram was raised and cleaned, and further kneaded for 1 minute and discharged at about 150 ° C. to obtain a first-stage formulation.
- the composition obtained in the first stage was mixed with an 8-inch roll (manufactured by Nippon Roll Co., Ltd., front roll surface temperature 50 ° C., rear roll surface temperature 50 ° C., front roll Was rotated at a rotation speed of 16 rpm and the rotation speed of the rear roll was 18 rpm, and 0.7 parts by mass of N-tert-butyl-2-benzothiazolylsulfenamide (Noxeller NS-P, Enouchi Ouchi Co., Ltd.) ))
- NBR formulation uncrosslinked NBR composition
- the respective sheets (layer 1) and film (layer 2) were superposed.
- the overlapped sheet and film with the Lumirror film sandwiched in the part are pressed (main press) at 180 ° C. for 10 minutes using a 100-ton press molding machine to crosslink the NBR sheet.
- main press 180 ° C. for 10 minutes using a 100-ton press molding machine to crosslink the NBR sheet.
- the Lumirror film is removed from the obtained laminate, and the interface between the NBR composition sheet and the EVOH film is peeled off by hand, and the peelability (adhesiveness) is set to 1 without bonding, and firmly bonded by hand.
- the state where the film could not be peeled was set to 5, and the evaluation was performed in five stages of 1 to 5, and the state of the EVOH film was observed.
- Example 6 NBR was performed in the same manner as in Example 5 except that dicumyl peroxide 40% masterbatch (DCP-40C, manufactured by NOF Corporation) was used instead of Noxeller NS-P and sulfur used in Example 5. A composition and a laminate were obtained.
- DCP-40C dicumyl peroxide 40% masterbatch
- Example 3 It replaced with the NBR composition used in Example 5, and carried out similarly to Example 5 except having used the NBR composition which does not mix silane modification EVA, and obtained the NBR composition and its layered product.
- Example 4 It replaced with the NBR composition used in Example 6, and carried out similarly to Example 6 except having used the NBR composition which does not mix silane modification EVA, and obtained the NBR composition and its layered product.
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Abstract
Description
本発明の積層体を構成するアクリロニトリル・ブタジエンゴム(NBR)層(以下、「NBR層」と略称する場合がある。)、およびアクリロニトリル・ブタジエンゴム組成物(以下、「NBR組成物」と略称する場合がある。)を構成するアクリロニトリル・ブタジエンゴム(NBR)は、アクリロニトリルとブタジエンとを乳化重合して得られるジエン系合成ゴムである。NBRは一般的にアクリロニトリルの結合量によって、極高(43%以上)、高(36~42%)、中高(31~35%)、中(25~30%)、低(24%以下)の5段階に分類され、中高が汎用タイプである。
本発明に係わるNBRに配合されるシラン変性エチレン・酢酸ビニル共重合体は、エチレン・酢酸ビニル共重合体に不飽和シラン化合物をグラフト変性してなる変性共重合体である。不飽和シラン化合物のグラフト量は、通常0.01~5重量%、好ましくは0.02~3重量%である。
エチレン・酢酸ビニル共重合体にグラフトされる不飽和シラン化合物としては、種々公知の化合物、例えば、ビニルトリメトキシシラン、ビニルトリエトキシシラン、ビニル(β-メトキシエトキシ)シラン、ビニルトリアセトキシシラン等のビニルシラン類、アクリロキシプロピルトリメトキシシラン、メタクリロキシプロピルトリメトキシシラン等のアクリル系シラン類等を挙げることができる。
本発明のNBR組成物は、上記NBR:100質量部に対して、上記シラン変性エチレン・酢酸ビニル共重合体を0~50質量部、好ましくは2~50質量部、より好ましくは5~20質量部含む組成物である。
本発明に係わるNBRに配合されるフィラーは、NBRに配合される公知のゴム補強剤であり、通常、カーボンブラック、無機補強剤と呼称されている無機物である。
架橋剤として、ジクミルペルオキシドを用いる場合、架橋助剤を併用してもよい。架橋助剤としては、例えば、イオウ;p-キノンジオキシム等のキノンジオキシム系架橋助剤;エチレングリコールジメタクリレート、トリメチロールプロパントリメタクリレート等のアクリル系架橋助剤;ジアリルフタレート、トリアリルイソシアヌレート等のアリル系架橋助剤;マレイミド系架橋助剤;ジビニルベンゼン;酸化亜鉛(例えば、ZnO#1・酸化亜鉛2種(JIS規格(K-1410))、ハクスイテック(株)製)、酸化マグネシウム、亜鉛華〔例えば、「META-Z102」(商品名;井上石灰工業(株)製)などの酸化亜鉛〕、活性亜鉛華等の金属酸化物が挙げられる。
本発明に係わる軟化剤としては、例えば、プロセスオイル、潤滑油、パラフィン油、流動パラフィン、石油アスファルト、ワセリン等の石油系軟化剤;コールタール等のコールタール系軟化剤;ヒマシ油、アマニ油、ナタネ油、大豆油、ヤシ油等の脂肪油系軟化剤;蜜ロウ、カルナウバロウ等のロウ類;ナフテン酸、パイン油、ロジンまたはその誘導体;テルペン樹脂、石油樹脂、クマロンインデン樹脂等の合成高分子物質;ジオクチルフタレート、ジオクチルアジペート等のエステル系軟化剤;その他、マイクロクリスタリンワックス、液状ポリブタジエン、変性液状ポリブタジエン、炭化水素系合成潤滑油、トール油、サブ(ファクチス)が挙げられ、これらのうちでは、石油系軟化剤が好ましく、プロセスオイルが特に好ましい。
本発明に係わるNBRに、老化防止剤(安定剤)を配合することにより、これから形成されるシールパッキンの寿命を長くすることができる。このような老化防止剤として、従来公知の老化防止剤、例えば、アミン系老化防止剤、フェノール系老化防止剤、イオウ系老化防止剤などがある。
加本発明に係わる加工助剤としては、一般に加工助剤としてゴムに配合されるものを広く使用することができる。具体的には、リシノール酸、ステアリン酸、パルミチン酸、ラウリン酸、ステアリン酸バリウム、ステアリン酸亜鉛、ステアリン酸カルシウム、ラウリン酸亜鉛またはエステル類等が挙げられる。これらのうち、ステアリン酸が好ましい。
本発明に係わる活性剤としては、例えば、ジ-n-ブチルアミン、ジシクロヘキシルアミン、モノエラノールアミン等のアミン類;ジエチレングリコール、ポリエチレングリコール、レシチン、トリアリルートメリレート、脂肪族カルボン酸または芳香族カルボン酸の亜鉛化合物等の活性剤;過酸化亜鉛調整物;クタデシルトリメチルアンモニウムブロミド、合成ハイドロタルサイト、特殊四級アンモニウム化合物が挙げられる。
本発明に係わるNBRを用いて形成された積層体は、非発泡体であってもよいし、発泡体であってもよい。積層体が発泡体である場合にはNBR組成物には発泡剤が含まれていることが好ましい。
本発明の積層体を構成するエチレン・酢酸ビニル共重合体鹸化物は、エチレン・ビニルアルコール共重合体とも称されているエチレンとビニルアルコールとの共重合体である。
本発明の積層体を構成するエチレン・酢酸ビニル共重合体は、エチレンと酢酸ビニルとの共重合体であって、共重合体中に存在する酢酸ビニル含量が通常、共重合体中に存在する酢酸ビニル含量が通常、5~50重量%、好ましくは5~40重量%の範囲にある。
エチレン・酢酸ビニル共重合体にグラフトされる不飽和シラン化合物としては、種々公知の化合物、例えば、ビニルトリメトキシシラン、ビニルトリエトキシシラン、ビニル(β-メトキシエトキシ)シラン、ビニルトリアセトキシシラン等のビニルシラン類、アクリロキシプロピルトリメトキシシラン、メタクリロキシプロピルトリメトキシシラン等のアクリル系シラン類等を挙げることができる。
本発明の積層体は、上記NBR組成物層と上記エチレン・酢酸ビニル共重合体鹸化物層とが積層されてなる積層体である。
(1)NBR:商品名Nipol 1042、結合アクリロニトリル(AN)量:33.5%、ML(1+4)100℃:77.5、非汚染性、比重:0.98[日本ゼオン(株)製]
(2)エチレン・酢酸ビニル共重合体
(2-1)エチレン・酢酸ビニル共重合体
エチレン・酢酸ビニル共重合体(EVA-1)として、商品名 エバフレック 銘柄EVA150 MFR:30g/10分、VA含有量:33重量%および密度:960kg/m3 三井・デュポンポリケミカル株式会社製を用いた。
(2-2)シラン変性エチレン・酢酸ビニル共重合体
実施例で用いたシラン変性エチレン・酢酸ビニル共重合体(変性EVA)は、以下の製造例1で製造した。
エチレン・酢酸ビニル共重合体〔商品名エバフレックス 銘柄EV260(MFR:6g/10分、密度:950kg/m3、酢酸ビニル含有量:28重量% 三井・デュポンポリケミカル製)を100質量部、ビニルトリメトキシシラン:1.7質量部、ジクミルパーオキサイド:0.15質量部、及び、ドデシルメルカプタン:0.03質量部を混合し、65mmφの多軸押出機に供給して押出温度200℃以上で溶融混練して押出した後、冷却ペレット化してシラン変性エチレン・酢酸ビニル共重合体(変性EVA)を得た。
エチレン・酢酸ビニル共重合体鹸化物からなるフィルムとして、EVOH 商品面F101B [(株)クラレ社製]融点:180℃、厚さ:100μmのフィルムを用いた(EVOHフィルム)。
(NBR組成物の調製)
第一段階として、BB-2型バンバリーミキサー(神戸製鋼所製)を用いて、上記NBRを30秒間素練りし、次いでこれに、NBR:100質量部に対して5質量部の酸化亜鉛(井上石灰工業(株)製)と、40質量部のFEFカーボンブラック(旭#60UG、旭カーボン(株)社製)及び1質量部のステアリン酸を140℃で2分間混練した。その後、ラムを上昇させ掃除を行ない、さらに、1分間混練を行ない、約150℃で排出し、第一段階の配合物を得た。
(T型剥離試験用の積層体の作製)
上記NBR組成物の調製で得られたNBR組成物をシート状に分出した。次に分出したNBR組成物シート50gを、延伸ポリエチレンテレフタレートフィルム(東レ製 商品名:ルミラー)で共重合体組成物シートの上下を挟んだ。ルミラーフィルムで上下が挟まれたNBR組成物シートを、50トンプレス成形機を用いて、120℃で2分間プレスし、t(厚さ)=1mm、20cm四方のNBR組成物シートを作製した。
実施例1で用いた変性EVAに替えて、EVA-1を用いる以外は、実施例1と同様に行い積層体を得た。評価結果を表1に示す。
実施例1において、中間層に用いた変性EVAを用いずに、シート(層1)とフィルム(層3)とを直接積層して積層体を得た。評価結果を表1に示す。
実施例1で用いたノクセラーNS-P及び硫黄に替えて、ジクミルパーオキサイド40%マスターバッチ(DCP-40C、日油(株)製)を用いる以外は、実施例1と同様に行い積層体を得た。評価結果を表1に示す。
実施例3で用いた変性EVAに替えて、EVA-1を用いる以外は、実施例3と同様に行い積層体を得た。評価結果を表1に示す。
実施例3において、中間層に用いた変性EVAを用いずに、シート(層1)とフィルム(層3)とを直接積層して積層体を得た。評価結果を表1に示す。
(NBR組成物の調製)
第一段階として、BB-2型バンバリーミキサー(神戸製鋼所製)を用いて、上記NBRを30秒間素練りし、次いでこれに、NBR:100質量部に対して10質量部のシラン変性EVAと、5質量部の酸化亜鉛(井上石灰工業(株)製)と、40質量部のFEFカーボンブラック(旭#60UG、旭カーボン(株)社製)及び1質量部のステアリン酸を140℃で2分間混練した。その後、ラムを上昇させ掃除を行ない、さらに、1分間混練を行ない、約150℃で排出し、第一段階の配合物を得た。
(T型剥離試験用の積層体の作製)
上記NBR組成物の調製で得られたNBR組成物をシート状に分出した。次に分出したNBR組成物シート50gを、延伸ポリエチレンテレフタレートフィルム(東レ製 商品名:ルミラー)で共重合体組成物シートの上下を挟んだ。ルミラーフィルムで上下が挟まれたNBR組成物シートを、50トンプレス成形機を用いて、120℃で2分間プレスし、t(厚さ)=1mm、20cm四方のNBR組成物シートを作製した。
実施例5で用いたノクセラーNS-P及び硫黄に替えて、ジクミルパーオキサイド40%マスターバッチ(DCP-40C、日油(株)製)を用いる以外は、実施例5と同様に行い、NBR組成物および積層体を得た。
実施例5で用いたNBR組成物に替えて、シラン変性EVAを配合しないNBR組成物を用いる以外は実施例5と同様に行い、NBR組成物およびその積層体を得た。
実施例6で用いたNBR組成物に替えて、シラン変性EVAを配合しないNBR組成物を用いる以外は実施例6と同様に行い、NBR組成物およびその積層体を得た。
Claims (6)
- アクリロニトリル・ブタジエンゴム、および当該アクリロニトリル・ブタジエンゴム100質量部に対して、シラン変性エチレン・酢酸ビニル共重合体を0~50質量部含むことを特徴とするアクリロニトリル・ブタジエンゴム組成物。
- 請求項1に記載の組成物を含むアクリロニトリル・ブタジエンゴム層とエチレン・酢酸ビニル共重合体鹸化物層とが、エチレン・酢酸ビニル共重合体層を介して積層されていることを特徴とする積層体。
- 上記エチレン・酢酸ビニル共重合体層がシラン変性エチレン・酢酸ビニル共重合体を含むことを特徴とする請求項2に記載の積層体。
- アクリロニトリル・ブタジエンゴム、および当該アクリロニトリル・ブタジエンゴム100質量部に対して、シラン変性エチレン・酢酸ビニル共重合体を2~50質量部含むことを特徴とする請求項1に記載のアクリロニトリル・ブタジエンゴム組成物。
- さらにジクミルペルオキシドを1.7~20質量部含むことを特徴とする請求項1または請求項4に記載のアクリロニトリル・ブタジエンゴム組成物。
- 請求項4または5に記載のアクリロニトリル・ブタジエンゴム組成物からなる層とエチレン・酢酸ビニル共重合体鹸化物層とが積層されていることを特徴とする積層体。
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TWI788539B (zh) | 2023-01-01 |
US20210079199A1 (en) | 2021-03-18 |
EP3766929A4 (en) | 2021-12-15 |
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CN111836853B (zh) | 2022-06-28 |
JPWO2019176797A1 (ja) | 2021-02-18 |
CN111836853A (zh) | 2020-10-27 |
TW201940571A (zh) | 2019-10-16 |
KR20200108077A (ko) | 2020-09-16 |
KR102422863B1 (ko) | 2022-07-19 |
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EP3766929B1 (en) | 2023-02-22 |
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