WO2018123448A1 - 積層体 - Google Patents
積層体 Download PDFInfo
- Publication number
- WO2018123448A1 WO2018123448A1 PCT/JP2017/043440 JP2017043440W WO2018123448A1 WO 2018123448 A1 WO2018123448 A1 WO 2018123448A1 JP 2017043440 W JP2017043440 W JP 2017043440W WO 2018123448 A1 WO2018123448 A1 WO 2018123448A1
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- WIPO (PCT)
- Prior art keywords
- layer
- fluororubber
- fluororesin
- group
- copolymer
- Prior art date
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- 229920001971 elastomer Polymers 0.000 claims abstract description 94
- 239000005060 rubber Substances 0.000 claims abstract description 94
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 79
- 239000011737 fluorine Substances 0.000 claims abstract description 72
- 239000000203 mixture Substances 0.000 claims abstract description 52
- 239000000446 fuel Substances 0.000 claims abstract description 50
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 49
- 150000001875 compounds Chemical class 0.000 claims abstract description 49
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920001973 fluoroelastomer Polymers 0.000 claims description 166
- 229920001577 copolymer Polymers 0.000 claims description 92
- -1 phosphorus compound Chemical class 0.000 claims description 88
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 62
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 41
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 32
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 32
- 239000003795 chemical substances by application Substances 0.000 claims description 26
- 230000035699 permeability Effects 0.000 claims description 26
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims description 25
- 229910052698 phosphorus Inorganic materials 0.000 claims description 18
- 239000011574 phosphorus Substances 0.000 claims description 17
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 16
- 239000005977 Ethylene Substances 0.000 claims description 14
- 125000000962 organic group Chemical group 0.000 claims description 14
- 229910000073 phosphorus hydride Inorganic materials 0.000 claims description 13
- 125000005843 halogen group Chemical group 0.000 claims description 8
- 150000002978 peroxides Chemical class 0.000 claims description 7
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 5
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- 150000003018 phosphorus compounds Chemical class 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 250
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical group FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 63
- 239000000178 monomer Substances 0.000 description 58
- 238000000034 method Methods 0.000 description 36
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 33
- 125000004432 carbon atom Chemical group C* 0.000 description 24
- 238000004073 vulcanization Methods 0.000 description 24
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- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 18
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
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- 150000003839 salts Chemical class 0.000 description 9
- KHXKESCWFMPTFT-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2-trifluoroethenoxy)propane Chemical compound FC(F)=C(F)OC(F)(F)C(F)(F)C(F)(F)F KHXKESCWFMPTFT-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
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- 150000004714 phosphonium salts Chemical class 0.000 description 8
- BLTXWCKMNMYXEA-UHFFFAOYSA-N 1,1,2-trifluoro-2-(trifluoromethoxy)ethene Chemical compound FC(F)=C(F)OC(F)(F)F BLTXWCKMNMYXEA-UHFFFAOYSA-N 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
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- 125000000524 functional group Chemical group 0.000 description 7
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- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 6
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 229910052740 iodine Inorganic materials 0.000 description 5
- 238000004898 kneading Methods 0.000 description 5
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- RRZIJNVZMJUGTK-UHFFFAOYSA-N 1,1,2-trifluoro-2-(1,2,2-trifluoroethenoxy)ethene Chemical class FC(F)=C(F)OC(F)=C(F)F RRZIJNVZMJUGTK-UHFFFAOYSA-N 0.000 description 4
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 4
- 239000004709 Chlorinated polyethylene Substances 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 4
- 150000001342 alkaline earth metals Chemical class 0.000 description 4
- 125000003368 amide group Chemical group 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 229910052794 bromium Inorganic materials 0.000 description 4
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 4
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 125000001153 fluoro group Chemical group F* 0.000 description 4
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 229920006168 hydrated nitrile rubber Polymers 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 229910000000 metal hydroxide Inorganic materials 0.000 description 4
- 150000004692 metal hydroxides Chemical class 0.000 description 4
- 150000001451 organic peroxides Chemical class 0.000 description 4
- MPQXHAGKBWFSNV-UHFFFAOYSA-N oxidophosphanium Chemical class [PH3]=O MPQXHAGKBWFSNV-UHFFFAOYSA-N 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
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- 125000001424 substituent group Chemical group 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 description 3
- GVEUEBXMTMZVSD-UHFFFAOYSA-N 3,3,4,4,5,5,6,6,6-nonafluorohex-1-ene Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C=C GVEUEBXMTMZVSD-UHFFFAOYSA-N 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
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- 244000043261 Hevea brasiliensis Species 0.000 description 3
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- 238000005481 NMR spectroscopy Methods 0.000 description 3
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- 125000005587 carbonate group Chemical group 0.000 description 3
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- 206010061592 cardiac fibrillation Diseases 0.000 description 3
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- 125000004093 cyano group Chemical group *C#N 0.000 description 3
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 3
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- 125000003709 fluoroalkyl group Chemical group 0.000 description 3
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- JILAKKYYZPDQBE-UHFFFAOYSA-N 1,1,2,2,3,3,4,4-octafluoro-1,4-diiodobutane Chemical compound FC(F)(I)C(F)(F)C(F)(F)C(F)(F)I JILAKKYYZPDQBE-UHFFFAOYSA-N 0.000 description 2
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 2
- JMGNVALALWCTLC-UHFFFAOYSA-N 1-fluoro-2-(2-fluoroethenoxy)ethene Chemical compound FC=COC=CF JMGNVALALWCTLC-UHFFFAOYSA-N 0.000 description 2
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical class C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 2
- QMIWYOZFFSLIAK-UHFFFAOYSA-N 3,3,3-trifluoro-2-(trifluoromethyl)prop-1-ene Chemical compound FC(F)(F)C(=C)C(F)(F)F QMIWYOZFFSLIAK-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
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- 241000196324 Embryophyta Species 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
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- VHRGRCVQAFMJIZ-UHFFFAOYSA-N cadaverine Chemical compound NCCCCCN VHRGRCVQAFMJIZ-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
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- NZZFYRREKKOMAT-UHFFFAOYSA-N diiodomethane Chemical compound ICI NZZFYRREKKOMAT-UHFFFAOYSA-N 0.000 description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
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- ATPFMBHTMKBVLS-UHFFFAOYSA-N n-[6-(cinnamylideneamino)hexyl]-3-phenylprop-2-en-1-imine Chemical compound C=1C=CC=CC=1C=CC=NCCCCCCN=CC=CC1=CC=CC=C1 ATPFMBHTMKBVLS-UHFFFAOYSA-N 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
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- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
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- JCHWNYYARSRCKZ-UHFFFAOYSA-M tributyl(cyanomethyl)phosphanium;chloride Chemical compound [Cl-].CCCC[P+](CCCC)(CCCC)CC#N JCHWNYYARSRCKZ-UHFFFAOYSA-M 0.000 description 2
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 2
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- UOFOQHJWFXUUML-UHFFFAOYSA-N (2,6-dimethoxyphenyl)phosphane Chemical compound COC1=CC=CC(OC)=C1P UOFOQHJWFXUUML-UHFFFAOYSA-N 0.000 description 1
- KDGNCLDCOVTOCS-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy propan-2-yl carbonate Chemical compound CC(C)OC(=O)OOC(C)(C)C KDGNCLDCOVTOCS-UHFFFAOYSA-N 0.000 description 1
- RIPYNJLMMFGZSX-UHFFFAOYSA-N (5-benzoylperoxy-2,5-dimethylhexan-2-yl) benzenecarboperoxoate Chemical compound C=1C=CC=CC=1C(=O)OOC(C)(C)CCC(C)(C)OOC(=O)C1=CC=CC=C1 RIPYNJLMMFGZSX-UHFFFAOYSA-N 0.000 description 1
- BLKRGXCGFRXRNQ-SNAWJCMRSA-N (z)-3-carbonoperoxoyl-4,4-dimethylpent-2-enoic acid Chemical compound OC(=O)/C=C(C(C)(C)C)\C(=O)OO BLKRGXCGFRXRNQ-SNAWJCMRSA-N 0.000 description 1
- JDGAMERTCYKWEF-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16-dotriacontafluoro-1,16-diiodohexadecane Chemical compound FC(F)(I)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)I JDGAMERTCYKWEF-UHFFFAOYSA-N 0.000 description 1
- GEGZKCLDAZQIQZ-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12-tetracosafluoro-1,12-diiodododecane Chemical compound FC(F)(I)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)I GEGZKCLDAZQIQZ-UHFFFAOYSA-N 0.000 description 1
- SRDQTCUHAMDAMG-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-hexadecafluoro-1,8-diiodooctane Chemical compound FC(F)(I)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)I SRDQTCUHAMDAMG-UHFFFAOYSA-N 0.000 description 1
- JOQDDLBOAIKFQX-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6-dodecafluoro-1,6-diiodohexane Chemical compound FC(F)(I)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)I JOQDDLBOAIKFQX-UHFFFAOYSA-N 0.000 description 1
- WIEYKFZUVTYEIY-UHFFFAOYSA-N 1,1,2,2,3,3-hexafluoro-1,3-diiodopropane Chemical compound FC(F)(I)C(F)(F)C(F)(F)I WIEYKFZUVTYEIY-UHFFFAOYSA-N 0.000 description 1
- OURRZLCUWZZPKV-UHFFFAOYSA-N 1,1,2,2-tetrafluoro-1-iodo-2-(1,2,2-trifluoroethenoxy)ethane Chemical compound FC(F)=C(F)OC(F)(F)C(F)(F)I OURRZLCUWZZPKV-UHFFFAOYSA-N 0.000 description 1
- LGPPATCNSOSOQH-UHFFFAOYSA-N 1,1,2,3,4,4-hexafluorobuta-1,3-diene Chemical compound FC(F)=C(F)C(F)=C(F)F LGPPATCNSOSOQH-UHFFFAOYSA-N 0.000 description 1
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- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/26—Tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/26—Tetrafluoroethene
- C08F214/262—Tetrafluoroethene with fluorinated vinyl ethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
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- 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
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- C08K3/02—Elements
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K5/16—Nitrogen-containing compounds
- C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K5/50—Phosphorus bound to carbon only
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- 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
-
- 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
Definitions
- the present invention relates to a laminate.
- laminated hoses with a fluororesin as a barrier layer are used in order to improve low fuel permeability, but due to the recent strong demand for reducing environmental impact, A further low fuel permeability is required.
- fluororubber is excellent in various properties such as heat resistance, oil resistance, and aging resistance, it has been proposed to use it as a rubber other than the above-described barrier layer.
- Patent Document 1 discloses that an inner layer that is a molded product of a ternary fluororesin of tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride, 1,8-diazabicyclo (5.4.0) undecene-7 salt, An outer layer which is a vulcanized molding composition of an epichlorohydrin rubber or NBR / PVC blend blended with an organic phosphonium salt, a 1,8-diazabicyclo (5.4.0) undecene-7 salt and an organic phosphonium salt An automotive fuel piping hose is described in which an innermost layer, which is a vulcanized molded product of an NBR rubber or fluorine rubber vulcanized composition containing a salt, is firmly bonded.
- An object of the present invention is to provide a laminate including a fluororubber layer and a fluororesin layer, in which the fluororubber layer and the fluororesin layer are firmly bonded. .
- the fluororesin layer uses a fluororesin having a small fuel permeability coefficient. Even in this case, the present inventors have found that the fluororesin layer and the fluororubber layer are firmly bonded, and have completed the present invention.
- the present invention is a laminate comprising a fluororubber layer (A) and a fluororesin layer (B) laminated on the fluororubber layer (A), wherein the fluororubber layer (A) A layer formed from a rubber composition, wherein the fluororubber composition is at least one selected from the group consisting of fluororubber, a basic polyfunctional compound, and a fluororesin (a1) and a phosphorus compound (a2).
- the compound (a) is contained in an amount of 0.01 to 120 parts by mass with respect to 100 parts by mass of the fluororubber, and the fluororesin layer (B) has a fuel permeability coefficient of 2.
- It is a laminated body characterized by being comprised from the fluororesin (b1) which is 0 g * mm / m ⁇ 2 > / day or less.
- the fluororesin (a1) is non-melt processable polytetrafluoroethylene, low molecular weight polytetrafluoroethylene, tetrafluoroethylene / perfluoro (alkyl vinyl ether) copolymer, tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / Tetrafluoroethylene copolymer, ethylene / tetrafluoroethylene / hexafluoropropylene copolymer, polychlorotrifluoroethylene, chlorotrifluoroethylene / tetrafluoroethylene copolymer, ethylene / chlorotrifluoroethylene copolymer, polyfluorinated It is preferably at least one selected from the group consisting of vinyl and a fluoromonomer / vinyl ester copolymer.
- the phosphorus compound (a2) is preferably a phosphine.
- the phosphorus compound (a2) is preferably a phosphine compound represented by the general formula: PR 3 (wherein three Rs are the same or different and each represents a halogen atom or an organic group).
- the fluororubber composition preferably further contains a peroxide vulcanizing agent.
- the fluororesin (b1) is at least one selected from the group consisting of polychlorotrifluoroethylene, chlorotrifluoroethylene copolymers, and tetrafluoroethylene / hexafluoropropylene / vinylidene fluoride copolymers. It is preferable.
- the fluororubber layer (A) is laminated on both sides of the fluororesin layer (B).
- the fluororesin layer (B) is preferably laminated on both sides of the fluororubber layer (A).
- the laminated body further includes a non-fluorinated rubber layer (C1a), and is preferably laminated in the order of a fluororubber layer (A) -a fluororesin layer (B) -a non-fluororubber layer (C1a).
- the laminate described above further includes a non-fluorine rubber layer (D1a), in the order of non-fluorine rubber layer (D1a) -fluorine rubber layer (A) -fluorine resin layer (B) -non-fluorine rubber layer (C1a).
- the rubber layer (C1a) and the non-fluorine rubber layer (D1a) are preferably laminated in this order.
- the fluororubber layer (A) and the fluororesin layer (B) are vulcanized and bonded.
- the laminated body of this invention has the said structure, the said fluororubber layer and the said fluororesin layer adhere
- the laminate of the present invention comprises a fluororubber layer (A) and a fluororesin layer (B) laminated on the fluororubber layer (A).
- A fluorororubber layer
- B fluororesin layer
- the fluoro rubber layer (A) is a layer formed from a fluoro rubber composition.
- the fluororubber layer (A) is usually obtained by molding a fluororubber composition to obtain an unvulcanized fluororubber layer and then vulcanizing it.
- the fluororubber composition contains fluororubber, a basic polyfunctional compound, and at least one compound (a) selected from the group consisting of a fluororesin (a1) and a phosphorus compound (a2).
- the fluororubber usually comprises an amorphous polymer having a fluorine atom bonded to a carbon atom constituting the main chain and having rubber elasticity.
- the fluororubber may be composed of one kind of polymer or may be composed of two or more kinds of polymers.
- Fluoro rubber is usually one that does not have a clear melting point.
- Fluorororubber is vinylidene fluoride (VdF) / hexafluoropropylene (HFP) copolymer, VdF / HFP / tetrafluoroethylene (TFE) copolymer, TFE / propylene copolymer, TFE / propylene / VdF copolymer.
- the fluororubber is preferably non-perfluorofluororubber, and more preferably a copolymer containing polymerized units (VdF units) derived from vinylidene fluoride.
- the copolymer containing a VdF unit is a copolymer unit derived from a VdF unit and a fluorine-containing ethylenic monomer (excluding the VdF unit.
- fluorine-containing ethylenic monomer unit (a)) Is preferable.
- the copolymer containing VdF units may be a copolymer consisting only of VdF units and fluorine-containing ethylenic monomer units (a), or VdF and fluorine-containing ethylenic monomers (provided that VdF is excluded.Hereinafter, it may be a copolymer containing a copolymer unit derived from a monomer copolymerizable with “fluorinated ethylenic monomer (a)”).
- Examples of the copolymer containing VdF units include 30 to 90 mol% of VdF units and 70 to 10 mol% of fluorine-containing with respect to 100 mol% of the total of VdF units and fluorine-containing ethylenic monomer units (a). It preferably contains an ethylenic monomer unit (a), more preferably contains 30 to 85 mol% of VdF units and 70 to 15 mol% of a fluorine-containing ethylenic monomer unit (a), more preferably 30 to More preferably, it contains 80 mol% of VdF units and 70 to 20 mol% of fluorinated ethylenic monomer units (a).
- a copolymer unit derived from a monomer copolymerizable with VdF and the fluorine-containing ethylenic monomer unit (a) (excluding the VdF unit) is composed of a VdF unit and a fluorine-containing ethylenic monomer (a).
- the content is preferably 0 to 10 mol% with respect to the total amount of the copolymerized units derived.
- fluorine-containing ethylenic monomer (a) examples include TFE, CTFE, trifluoroethylene, HFP, trifluoropropylene, tetrafluoropropylene, pentafluoropropylene, trifluorobutene, tetrafluoroisobutene, PAVE, vinyl fluoride,
- CFX CXOCF 2 OR 1 (2) Wherein X is the same or different and represents H, F or CF 3 , and R 1 represents at least one atom selected from the group consisting of H, Cl, Br and I, which is linear or branched.
- a fluoroalkyl group having 1 to 6 carbon atoms which may contain 1 to 2 carbon atoms, or 1 to 2 atoms selected from the group consisting of H, Cl, Br and I
- a fluorine-containing monomer such as a fluorovinyl ether represented by (C) represents a cyclic fluoroalkyl group having 5 or 6 carbon atoms.
- it is preferably at least one selected from the group consisting of fluorovinyl ether, TFE, HFP and PAVE represented by the formula (2), and at least selected from the group consisting of TFE, HFP and PAVE.
- TFE fluorovinyl ether
- HFP HFP
- PAVE represented by the formula (2)
- One type is more preferable.
- CF 2 CFO (CF 2 CFY 1 O) p - (CF 2 CF 2 CF 2 O) q -Rf (3)
- Y 1 represents F or CF 3
- Rf represents a perfluoroalkyl group having 1 to 5 carbon atoms
- p represents an integer of 0 to 5
- q represents an integer of 0 to 5
- the PAVE is preferably perfluoro (methyl vinyl ether) or perfluoro (propyl vinyl ether), and more preferably perfluoro (methyl vinyl ether). These can be used alone or in any combination.
- Examples of the monomer copolymerizable with VdF and the fluorine-containing ethylenic monomer (a) include ethylene, propylene, and alkyl vinyl ether.
- Such a copolymer containing VdF units include a VdF / HFP copolymer, a VdF / HFP / TFE copolymer, a VdF / CTFE copolymer, a VdF / CTFE / TFE copolymer, and a VdF.
- copolymers containing VdF units at least one copolymer selected from the group consisting of VdF / HFP copolymers and VdF / HFP / TFE copolymers from the viewpoint of heat resistance. Is particularly preferred. It is preferable that the copolymer containing these VdF units satisfies the composition ratio of the VdF unit and the fluorine-containing ethylenic monomer unit (a) described above.
- the VdF / HFP copolymer preferably has a VdF / HFP molar ratio of 45 to 85/55 to 15, more preferably 50 to 80/50 to 20, and still more preferably 60 to 80/40. ⁇ 20.
- the VdF / HFP / TFE copolymer preferably has a molar ratio of VdF / HFP / TFE of 30 to 85/5 to 50/5 to 40, and a molar ratio of VdF / HFP / TFE of 35 to 80 /. More preferably, the molar ratio of VdF / HFP / TFE is more preferably 40 to 80/10 to 40/10 to 30, and the molar ratio of VdF / HFP / TFE is more preferably 8 to 45/8 to 35. Most preferred is 40 to 80/10 to 35/10 to 30.
- VdF / PAVE copolymer As the VdF / PAVE copolymer, a VdF / PAVE molar ratio of 65 to 90/10 to 35 is preferable.
- VdF / TFE / PAVE copolymer As the VdF / TFE / PAVE copolymer, a VdF / TFE / PAVE molar ratio of 40 to 80/3 to 40/15 to 35 is preferable.
- VdF / HFP / PAVE copolymer those having a molar ratio of VdF / HFP / PAVE of 65 to 90/3 to 25/3 to 25 are preferable.
- the VdF / HFP / TFE / PAVE copolymer preferably has a VdF / HFP / TFE / PAVE molar ratio of 40 to 90/0 to 25/0 to 40/3 to 35, more preferably 40 to 80/3 to 25/3 to 40/3 to 25.
- the fluororubber is made of a copolymer containing a copolymer unit derived from a monomer that provides a crosslinking site.
- the monomer that gives a crosslinking site include perfluoro (6,6-dihydro-6-iodo-3-oxa-1-) described in JP-B-5-63482 and JP-A-7-316234.
- Hexene) and perfluoro (5-iodo-3-oxa-1-pentene) -containing monomers bromine-containing monomers described in JP-A-4-505341, JP-A-4-505345, Examples include cyano group-containing monomers, carboxyl group-containing monomers, and alkoxycarbonyl group-containing monomers as described in JP-T-5-500070.
- the fluororubber is also preferably a fluororubber having an iodine atom or a bromine atom at the end of the main chain.
- Fluororubber having iodine atom or bromine atom at the main chain end is produced by adding a radical initiator in the presence of a halogen compound in an aqueous medium in the absence of oxygen and performing emulsion polymerization of the monomer. it can.
- halogen compound used include, for example, the general formula: R 2 I x Br y (Wherein x and y are each an integer of 0 to 2 and satisfy 1 ⁇ x + y ⁇ 2, and R 2 is a saturated or unsaturated fluorohydrocarbon group having 1 to 16 carbon atoms, carbon A saturated or unsaturated chlorofluorohydrocarbon group having 1 to 16 carbon atoms, a hydrocarbon group having 1 to 3 carbon atoms, or a cyclic hydrocarbon group having 3 to 10 carbon atoms which may be substituted with an iodine atom or a bromine atom And these may contain an oxygen atom).
- halogen compound examples include 1,3-diiodoperfluoropropane, 1,3-diiodo-2-chloroperfluoropropane, 1,4-diiodoperfluorobutane, 1,5-diiodo-2,4- Dichloroperfluoropentane, 1,6-diiodoperfluorohexane, 1,8-diiodoperfluorooctane, 1,12-diiodoperfluorododecane, 1,16-diiodoperfluorohexadecane, diiodomethane, 1,2 - diiodoethane, 1,3-diiodo -n- propane, CF 2 Br 2, BrCF 2 CF 2 Br, CF 3 CFBrCF 2 Br, CFClBr 2, BrCF 2 CFClBr, CFBrClCFClBr, BrCF 2 CF 2 CF
- 1,4-diiodoperfluorobutane or diiodomethane from the viewpoint of polymerization reactivity, crosslinking reactivity, availability, and the like.
- the fluororubber preferably has a Mooney viscosity (ML 1 + 10 (100 ° C.)) of 5 to 200, preferably 10 to 150, from the viewpoint of good processability when producing a fluororubber composition. More preferably, it is 20 to 100. Mooney viscosity can be measured according to ASTM-D1646. Measuring equipment: ALPHA2000 TECHNOLOGIES MV2000E rotor speed: 2 rpm Measurement temperature: 100 ° C
- the rubber component is preferably composed only of the fluororubber.
- the fluororubber composition contains at least one compound (a) selected from the group consisting of a fluororesin (a1) and a phosphorus compound (a2).
- the content of the compound (a) is 0.01 to 120 parts by mass with respect to 100 parts by mass of the fluororubber, whereby the fluororubber layer (A) and the fluororesin layer (B) Adhere firmly.
- 0.05 mass part or more is preferable, 0.1 mass part or more is more preferable, 0.3 mass part or more is further more preferable, 0.5 mass part or more is especially preferable, 90 parts by mass or less is preferable, 65 parts by mass or less is more preferable, 48 parts by mass or less is further preferable, and 47 parts by mass or less is particularly preferable.
- the fluororubber composition preferably contains a fluororesin (a1) as the compound (a).
- the content of the fluororesin (a1) in this case is 0 with respect to 100 parts by mass of the fluororubber because the fluororubber layer (A) and the fluororesin layer (B) are more firmly bonded.
- 0.5 to 100 parts by mass is preferable, 10 parts by mass or more is more preferable, 20 parts by mass or more is further preferable, 30 parts by mass or more is particularly preferable, 80 parts by mass or less is more preferable, 60 parts by mass or less is further preferable, 45 Part by mass or less is particularly preferable.
- the fluororubber composition preferably contains a phosphorus compound (a2) as the compound (a).
- the content of the phosphorus compound (a2) is 0 with respect to 100 parts by mass of the fluororubber because the fluororubber layer (A) and the fluororesin layer (B) are more firmly bonded. 0.01 to 20 parts by weight, preferably 0.05 to 10 parts by weight, more preferably 0.1 to 5 parts by weight, particularly preferably 0.3 to 3 parts by weight, and 0.5 to 2 parts by weight. Most preferred.
- both the fluororesin (a1) and the phosphorus compound (a2) are used as the compound (a). It is also preferable to contain.
- the content of the fluororesin (a1) in this case is 0 with respect to 100 parts by mass of the fluororubber because the fluororubber layer (A) and the fluororesin layer (B) are more firmly bonded.
- the content of the phosphorus compound (a2) is as follows.
- the fluororubber layer (A) and the fluororesin layer (B) are more firmly bonded. 01 to 20 parts by mass is preferred, 0.05 to 10 parts by mass is more preferred, 0.1 to 5 parts by mass is still more preferred, 0.3 to 3 parts by mass is particularly preferred, and 0.5 to 2 parts by mass is most preferred. preferable.
- Fluororesin (a1) When the fluorororubber composition contains the fluororesin (a1), the fluororubber layer (A) and the fluororesin layer (B) are firmly bonded.
- the fluororesin usually has a melting point and has thermoplasticity.
- the fluororesin (a1) may be a melt processable fluororesin or a non-melt processable fluororesin, but is preferably the melt processable fluororesin.
- melt processability means that the polymer can be melted and processed using conventional processing equipment such as an extruder and an injection molding machine. Therefore, the melt processable fluororesin usually has a melt flow rate measured by a measurement method described later of 0.01 to 100 g / 10 min.
- fluororesin (a1) examples include non-melt processable polytetrafluoroethylene [PTFE], low molecular weight polytetrafluoroethylene, TFE / PAVE copolymer [PFA], TFE / HFP copolymer [FEP], ethylene [ Et] / TFE copolymer [ETFE], Et / TFE / HFP copolymer, polychlorotrifluoroethylene [PCTFE], CTFE / TFE copolymer, Et / CTFE copolymer, polyvinyl fluoride [PVF], Examples thereof include a fluoromonomer / vinyl ester copolymer, and among them, low molecular weight polytetrafluoroethylene is preferable.
- PTFE non-melt processable polytetrafluoroethylene
- PFA TFE / PAVE copolymer
- FEP TFE / HFP copolymer
- EFE Et] / TFE copolymer
- PCTFE
- the low molecular weight polytetrafluoroethylene preferably has melt processability and does not have fibrillation properties.
- the low molecular weight PTFE is a TFE polymer having a number average molecular weight of 600,000 or less. “High molecular weight PTFE” having a number average molecular weight exceeding 600,000 exhibits fibrillation characteristics peculiar to PTFE (see, for example, JP-A-10-147617). High molecular weight PTFE has a high melt viscosity and is non-melt processable. When high molecular weight PTFE is used as an additive, it exhibits fibrillation characteristics, so that PTFE particles are likely to aggregate with each other and dispersibility in a matrix material is poor.
- the low molecular weight PTFE is a TFE polymer having a melt viscosity of 1 ⁇ 10 2 to 7 ⁇ 10 5 (Pa ⁇ s) at 380 ° C. If PTFE has a melt viscosity within the above range, the number average molecular weight is within the above range.
- the melt viscosity is in accordance with ASTM D 1238, and a 2 g sample previously heated at 380 ° C. for 5 minutes using a flow tester (manufactured by Shimadzu Corporation) and a 2 ⁇ -8L die under a load of 0.7 MPa. The value is measured while maintaining the above temperature.
- the number average molecular weight is a value calculated from the melt viscosity measured by the measurement method.
- the low molecular weight PTFE is preferably a TFE polymer having a melting point of 324 to 333 ° C.
- the low molecular weight PTFE preferably has an average particle size of 0.01 to 1000 ⁇ m, more preferably 0.1 to 100 ⁇ m, still more preferably 0.3 to 50 ⁇ m, and more preferably 0.5 to 20 ⁇ m. Most preferably.
- the average particle size is obtained by measuring the particle size distribution using a laser diffraction particle size distribution measuring device (for example, manufactured by Nippon Laser Co., Ltd.) without using a cascade, at a pressure of 0.1 MPa, and a measurement time of 3 seconds. It is assumed that it is equal to a value corresponding to 50% of the distribution integration.
- the low molecular weight PTFE preferably has a melt flow rate (MFR) of 0.01 to 10 g / 10 min at 372 ° C. (load 1.2 kg).
- MFR melt flow rate
- the MFR uses a melt indexer (for example, manufactured by Toyo Seiki Seisakusho Co., Ltd.), and the weight of the polymer flowing out in a unit time (10 minutes) from a nozzle having a diameter of 2 mm and a length of 8 mm under a load of 372 ° C. and 1.2 kg (10 minutes) It can be specified by measuring g).
- the low molecular weight PTFE may be a homopolymer of TFE or a modified PTFE containing a TFE unit and a modified monomer unit copolymerizable with TFE.
- the content of the modified monomer unit copolymerizable with TFE is preferably 0.01 to 1% by mass, and preferably 0.01 to 0.5% by mass based on the total monomer units. More preferred is 0.03 to 0.3% by mass.
- the modified monomer unit means a part derived from the modified monomer and part of the molecular structure of the modified PTFE, and the total monomer unit means all the single monomers in the molecular structure of the modified PTFE. It means a part derived from the body.
- the content of the modified monomer unit is a value measured by performing infrared spectroscopic analysis or NMR (nuclear magnetic resonance).
- the modified monomer in the modified PTFE is not particularly limited as long as it can be copolymerized with TFE.
- perfluoroolefin such as hexafluoropropylene [HFP]; chloro such as chlorotrifluoroethylene [CTFE]
- fluoroolefins such as hexafluoropropylene [HFP]
- chloro such as chlorotrifluoroethylene [CTFE]
- fluoroolefins hydrogen-containing fluoroolefins such as trifluoroethylene and vinylidene fluoride [VDF]
- perfluorovinyl ethers perfluoroalkylethylenes: ethylene.
- denatured monomer to be used may be 1 type, and multiple types may be sufficient as it.
- the “perfluoro organic group” means an organic group in which all hydrogen atoms bonded to carbon atoms are substituted with fluorine atoms.
- the perfluoro organic group may have ether oxygen.
- perfluorovinyl ether examples include perfluoro (alkyl vinyl ether) [PAVE] in which Rf represents a perfluoroalkyl group having 1 to 10 carbon atoms in the general formula (I).
- the perfluoroalkyl group preferably has 1 to 5 carbon atoms.
- Examples of the perfluoroalkyl group in the PAVE include a perfluoromethyl group, a perfluoroethyl group, a perfluoropropyl group, a perfluorobutyl group, a perfluoropentyl group, and a perfluorohexyl group.
- Purple propyl vinyl ether [PPVE] in which the group is a perfluoropropyl group is preferred.
- Rf is a perfluoro (alkoxyalkyl) group having 4 to 9 carbon atoms, and Rf is represented by the following formula:
- Rf is the following formula:
- n an integer of 1 to 4.
- the perfluoroalkylethylene is not particularly limited, and examples thereof include perfluorobutylethylene (PFBE) and perfluorohexylethylene.
- the modified monomer in the modified PTFE is preferably at least one monomer selected from the group consisting of HFP, CTFE, VDF, PPVE, PFBE and ethylene, and more preferably HFP.
- the low molecular weight PTFE is preferably modified PTFE, and more preferably modified PTFE containing TFE units and polymerized units derived from HFP (HFP units).
- the fluororesin (a1) preferably has an average particle size of 0.01 to 1000 ⁇ m, more preferably 0.1 to 100 ⁇ m, still more preferably 0.3 to 50 ⁇ m, and 0.5 Most preferably, it is ⁇ 20 ⁇ m.
- the average particle size is obtained by measuring the particle size distribution using a laser diffraction particle size distribution measuring device (for example, manufactured by Nippon Laser Co., Ltd.) without using a cascade, at a pressure of 0.1 MPa, and a measurement time of 3 seconds. It is assumed that it is equal to a value corresponding to 50% of the distribution integration.
- the phosphorus compound (a2) is a compound containing at least one phosphorus atom in one molecule, and examples thereof include phosphines, phosphate esters, phosphazenes, phosphine oxides, phosphonate esters, phosphinate esters and the like. Can be mentioned.
- the general formula: PR 3 wherein three R are the same or And at least one selected from the group consisting of phosphine compounds, phosphonium salts, and phosphine oxides represented by (representing a halogen atom or an organic group), and the above phosphine compounds are more preferable.
- the phosphine compound is represented by the general formula: PR 3 and three Rs in the formula may be the same or different and each represents a halogen atom or an organic group.
- Examples of the phosphine compound include compounds having a structure represented by PR 3 such as triphenylphosphine hydrochloride, triphenylphosphine borane, triphenylphosphine-triphenylborane complex.
- Examples of the organic group include hydrocarbon groups having 1 to 30 carbon atoms which may have a substituent.
- the hydrocarbon group may be linear, branched, monocyclic or polycyclic, may have an unsaturated bond, may have aromaticity, or may include a hetero atom.
- Examples of the substituent include an alkoxy group, an amino group, a cyano group, an aldehyde group, a carboxylic acid group, a halogen atom, a phosphine group, a phosphone group, and a diphenylphosphino group.
- Examples of the phosphine compound include the following compounds.
- phosphine compound any of the following compounds is preferable. 1 type (s) or 2 or more types can be used as said phosphine compound.
- the phosphonium salt is preferably a quaternary phosphonium salt, for example, tetrabutylphosphonium chloride, benzyltriphenylphosphonium chloride, benzyltrimethylphosphonium chloride, benzyltributylphosphonium chloride, tributylallylphosphonium chloride, tributyl-2-methoxypropylphosphonium chloride. Benzylphenyl (dimethylamino) phosphonium chloride, tributyl (cyanomethyl) phosphonium chloride, and the like.
- the fluororesin (a1) particularly low molecular weight PTFE, high adhesive strength can be obtained.
- phosphine oxides compounds represented by the general formula: R 3 P ( ⁇ O) (wherein three Rs are the same or different and represent a halogen atom or an organic group) are preferable.
- Examples of the organic group include hydrocarbon groups having 1 to 30 carbon atoms which may have a substituent.
- the hydrocarbon group may be linear, branched, monocyclic or polycyclic, may have an unsaturated bond, may have aromaticity, or may include a hetero atom.
- Examples of the substituent include an alkoxy group, an amino group, a cyano group, an aldehyde group, a carboxylic acid group, a halogen atom, a phosphine group, a phosphone group, and a diphenylphosphino group.
- the following compounds are preferable.
- the said fluororubber composition contains a basic polyfunctional compound, and, thereby, a fluororubber layer (A) and a fluororesin layer (B) adhere more firmly.
- the basic polyfunctional compound is a compound having two or more functional groups having the same or different structures in one molecule and showing basicity.
- the functional group possessed by the basic polyfunctional compound is preferably one showing basicity.
- R 1 , R 2 , R 3 , R 4 and R 5 are preferably independently —H or an organic group having 1 to 12 carbon atoms, and —H or 1 to 12 carbon atoms.
- the hydrocarbon group is preferably.
- the hydrocarbon group may have one or more carbon-carbon double bonds.
- the hydrocarbon group preferably has 1 to 8 carbon atoms.
- R 1 is —H or —CH 3
- Examples of the basic polyfunctional compound include ethylenediamine, propanediamine, putrescine, cadaverine, hexamethylenediamine, heptanediamine, octanediamine, nonanediamine, decanediamine, undecanediamine, dodecanediamine, phenylenediamine, N, N′-dicinenamilidene 1,6-hexamethylenediamine, N, N, N ′, N′-tetramethyl-1,6-hexamethylenediamine, N, N′-dimethyl-1,6-hexamethylenediamine, 6-aminohexylcarbamic acid Etc.
- the basic polyfunctional compound contains at least two nitrogen atoms in the molecule, and the interatomic distance between nitrogen and nitrogen is 5.70 mm or more.
- the interatomic distance between nitrogen and nitrogen is more preferably 6.30 mm or more, further preferably 7.60 mm or more, and particularly preferably 8.60 mm or more.
- a wide interatomic distance between nitrogen and nitrogen increases the flexibility of the basic polyfunctional compound and facilitates vulcanization.
- the interatomic distance between nitrogen and nitrogen is calculated according to the following method. That is, the structure optimization of each base is calculated using a density functional method (program is Gaussian 03, density functional is B3LYP, basis function is 6-31G *).
- the basic polyfunctional compound is N, N′-dicinnamylidene-1,6-hexamethylenediamine and NH 2 — (CH 2 ) in terms of adhesion between the fluororubber layer (A) and the fluororesin layer (B). 2 ) n —NH 2 (wherein n is preferably 5 to 12), preferably at least one selected from the group consisting of hexamethylenediamine and N, N′-dicinnamylidene-1,6-hexa More preferably, it is at least one compound selected from the group consisting of methylenediamine.
- the content of the basic polyfunctional compound is based on 100 parts by mass of the fluororubber. 0.5 parts by mass or more, preferably 0.6 parts by mass or more, more preferably 0.8 parts by mass or more, and particularly preferably 1.0 parts by mass or more. Preferably, it is 1.5 parts by mass or more.
- the content of the basic polyfunctional compound is preferably 10 parts by mass or less, more preferably 6 parts by mass or less, and further preferably 5 parts by mass or less from the viewpoint of vulcanization inhibition and cost. Preferably, it is most preferably 3 parts by mass or less.
- the fluororubber composition preferably further contains a vulcanizing agent because the fluororubber layer (A) and the fluororesin layer (B) are more firmly bonded.
- a vulcanizing agent a peroxide vulcanizing agent or the like can be selected according to the purpose.
- the fluororubber composition preferably contains a peroxide vulcanizing agent.
- the peroxide vulcanizing agent is not particularly limited, and examples thereof include organic peroxides.
- the organic peroxide is preferably one that easily generates a peroxy radical in the presence of heat or a redox system.
- the amount used is appropriately selected from the amount of active —O—O—, the decomposition temperature, and the like.
- the amount used is usually 0.1 to 15 parts by mass, preferably 0.3 to 5 parts by mass, and more preferably 1 to 2 parts by mass with respect to 100 parts by mass of the fluororubber.
- a vulcanization aid or a co-vulcanizing agent may be used in combination.
- the vulcanization aid or co-vulcanization agent is not particularly limited, and examples thereof include the above-described vulcanization aid and co-vulcanization agent.
- triallyl isocyanurate (TAIC) is preferable from the viewpoint of vulcanizability and physical properties of the vulcanizate.
- the blending amount of the vulcanizing aid and co-vulcanizing agent is preferably 0.2 to 10 parts by weight, more preferably 0.5 to 9 parts by weight, with respect to 100 parts by weight of the fluororubber. More preferred is 3 to 7 parts by mass. If the vulcanizing agent or co-curing agent is less than 0.2 parts by mass, the vulcanization density tends to be low and the compression set tends to be large, and if it exceeds 10 parts by mass, the vulcanization density becomes too high. For this reason, it tends to break easily during compression.
- the fluororubber composition is a metal oxide, metal hydroxide, alkali metal as an acid acceptor or as a compounding agent for improving the adhesion between the fluororubber layer (A) and the fluororesin layer (B). And at least one compound selected from the group consisting of weak acid salts of alkaline earth metals.
- metal oxides, metal hydroxides, alkali metal weak acid salts, and alkaline earth metal weak acid salts include oxides, hydroxides, carbonates, carboxylates, silicas of group (II) metals of the periodic table. Acid salts, borates, phosphites, periodic table group (IV) metal oxides, basic carbonates, basic carboxylates, basic phosphites, basic sulfites and the like. .
- metal oxides, metal hydroxides, alkali metal weak acid salts and alkaline earth metal weak acid salts include magnesium oxide, zinc oxide, magnesium hydroxide, barium hydroxide, magnesium carbonate, barium carbonate, Calcium oxide (quick lime), calcium hydroxide (slaked lime), calcium carbonate, calcium silicate, calcium stearate, zinc stearate, calcium phthalate, calcium phosphite, tin oxide, basic tin phosphite and the like can be mentioned.
- the content of the metal oxide, metal hydroxide, alkali metal weak acid salt, alkaline earth metal weak acid salt is preferably 5 parts by mass or less, More preferably, it is 3 parts by mass or less, and from the viewpoint of acid resistance, it is even more preferable not to include it.
- the above-mentioned fluororubber composition is an ordinary additive blended in the fluororubber composition as necessary, for example, filler, processing aid, plasticizer, colorant, stabilizer, adhesion aid, acid acceptor.
- Various additives such as mold release agents, conductivity imparting agents, thermal conductivity imparting agents, surface non-adhesives, flexibility imparting agents, heat resistance improvers, flame retardants, etc. You may contain 1 or more types of a different usual vulcanizing agent and a vulcanization accelerator.
- Examples of the filler include carbon black.
- the content of carbon black is preferably 0 to 100 parts by mass, more preferably 2 to 60 parts by mass, and still more preferably 5 to 40 parts by mass with respect to 100 parts by mass of the fluororubber. It is particularly preferably 10 to 30 parts by mass.
- the use of carbon black has the advantage of improving mechanical properties, heat resistance, and the like.
- the said fluororubber composition can be obtained by knead
- a rubber kneading apparatus a roll, a kneader, a Banbury mixer, an internal mixer, a twin screw extruder, or the like can be used.
- the fluororesin layer (B) is composed of a fluororesin (b1), and the fluororesin (b1) has a fuel permeability coefficient of 2.0 g ⁇ mm / m 2 / day or less. It is. When the fuel permeability coefficient is 2.0 g ⁇ mm / m 2 / day or less, excellent low fuel permeability is exhibited. Therefore, for example, the laminate of the present invention can be suitably used as a fuel hose or the like.
- the fuel permeability coefficient is preferably 1.5 g ⁇ mm / m 2 / day or less, more preferably 0.8 g ⁇ mm / m 2 / day or less, and 0.55 g ⁇ mm / m 2 / day. It is more preferably not more than day, and particularly preferably not more than 0.5 g ⁇ mm / m 2 / day.
- the fuel permeability coefficient is a SUS316 fuel permeability coefficient measuring cup made of SUS316 with an inner diameter of 40 mm ⁇ and a height of 20 mm charged with 18 mL of an isooctane / toluene / ethanol mixed solvent in which isooctane, toluene and ethanol are mixed at a volume ratio of 45:45:10.
- the fluororesin (b1) is obtained from a polychlorotrifluoroethylene (PCTFE), a CTFE copolymer, and a TFE / HFP / VdF copolymer because a laminate having excellent low fuel permeability can be obtained. It is preferably at least one selected from the group consisting of, more preferably at least one selected from the group consisting of polychlorotrifluoroethylene (PCTFE) and a CTFE copolymer, and low fuel permeability From the viewpoint of flexibility, a CTFE copolymer is more preferable.
- the TFE / HFP / VdF copolymer may contain 0 to 20 mol% of other monomers.
- Other monomers include perfluoro (methyl vinyl ether), perfluoro (ethyl vinyl ether), perfluoro (propyl vinyl ether), chlorotrifluoroethylene, 2-chloropentafluoropropene, perfluorinated vinyl ethers (eg CF 3 OCF Perfluoroalkoxy vinyl ethers such as 2 CF 2 CF 2 OCF ⁇ CF 2 ), perfluoroalkyl vinyl ethers, perfluoro-1,3-butadiene, trifluoroethylene, hexafluoroisobutene, vinyl fluoride, ethylene, propylene, and And at least one monomer selected from the group consisting of alkyl vinyl ethers, perfluoro (methyl vinyl ether), perfluoro (ethyl vinyl ether), and the like. Ether) is preferably a perfluoro (propyl vinyl ether).
- the PCTFE is a chlorotrifluoroethylene homopolymer.
- the CTFE copolymer is more preferably a perhalopolymer.
- the CTFE-based copolymer includes a CTFE unit and a copolymer unit derived from at least one monomer selected from the group consisting of TFE, HFP, and PAVE. More preferably, it consists only of copolymerized units of Further, from the viewpoint of low fuel permeability, it is preferable not to include a monomer having a CH bond such as ethylene, vinylidene fluoride, and vinyl fluoride.
- Perhalopolymers that do not contain a monomer having a CH bond are usually difficult to adhere to fluororubber, but according to the configuration of the present invention, even if the fluororesin layer (B) is a layer made of perhalopolymer, The adhesion between the fluororesin layer (B) and the fluororubber layer (A) is strong.
- the CTFE copolymer preferably has 10 to 90 mol% of CTFE units based on the total monomer units.
- CTFE copolymer those containing a monomer ( ⁇ ) unit derived from a CTFE unit, a TFE unit and a monomer ( ⁇ ) copolymerizable therewith are particularly preferred.
- CTFE unit and the “TFE unit” are a part derived from CTFE (—CFCl—CF 2 —) and a part derived from TFE (—CF 2 —CF 2 —), respectively, in the molecular structure of the CTFE copolymer.
- the “monomer ( ⁇ ) unit” is a portion formed by adding the monomer ( ⁇ ) to the molecular structure of the CTFE copolymer.
- the monomer ( ⁇ ) is not particularly limited as long as it is a monomer copolymerizable with CTFE and TFE.
- X 6 is a hydrogen atom, a fluorine atom or a chlorine atom;
- n is an integer of 1 to 10
- CF 2 ⁇ CF—O—Rf 2 wherein Rf 2 is a perfluoroalkyl group having 1 to 5 carbon atoms
- alkyl perfluorovinyl ether derivative those in which Rf 2 is a perfluoroalkyl group having 1 to 3 carbon atoms are preferable, and CF 2 ⁇ CF—OCF 2 —CF 2 CF 3 is more preferable.
- the monomer ( ⁇ ) is preferably at least one selected from the group consisting of PAVE, the above vinyl monomer, and alkyl perfluorovinyl ether derivatives, and more preferably from the group consisting of PAVE and HFP. More preferably, it is at least one selected, and PAVE is particularly preferable.
- the ratio of CTFE units to TFE units is 85 to 10 mol% of TFE units relative to 15 to 90 mol% of CTFE units, and more preferably 20 to 90 mol of CTFE units. %, And the TFE unit is 80 to 10 mol%. Also preferred are those composed of 15 to 25 mol% of CTFE units and 85 to 75 mol% of TFE units.
- the CTFE copolymer preferably has a total of CTFE units and TFE units of 90 to 99.9 mol% and monomer ( ⁇ ) units of 0.1 to 10 mol%. If the monomer ( ⁇ ) unit is less than 0.1 mol%, it tends to be inferior in moldability, environmental stress crack resistance and fuel crack resistance, and if it exceeds 10 mol%, low fuel permeability, heat resistance, It tends to be inferior in mechanical properties.
- the fluororesin (b1) is at least one selected from the group consisting of PCTFE, CTFE / TFE / PAVE copolymer and TFE / HFP / VdF copolymer from the viewpoint of low fuel permeability and adhesiveness. Is more preferable, at least one selected from the group consisting of a CTFE / TFE / PAVE copolymer and a TFE / HFP / VdF copolymer is more preferable, and a CTFE / TFE / PAVE copolymer is particularly preferable.
- the CTFE / TFE / PAVE copolymer is a copolymer consisting essentially of CTFE, TFE and PAVE.
- the PAVE includes perfluoro (methyl vinyl ether) (PMVE), perfluoro (ethyl vinyl ether) (PEVE), perfluoro (propyl vinyl ether) (PPVE), perfluoro (butyl vinyl ether). Among these, at least one selected from the group consisting of PMVE, PEVE and PPVE is preferable.
- the PAVE unit is preferably 0.5 mol% or more, and preferably 5 mol% or less of the total monomer units.
- the structural unit such as CTFE unit is a value obtained by performing 19 F-NMR analysis.
- At least one reactive functional group selected from the group consisting of a carbonyl group, a hydroxyl group, a heterocyclic group, and an amino group is introduced into the main chain terminal and / or side chain of the polymer. It may be a thing.
- the “carbonyl group” is a carbon divalent group composed of a carbon-oxygen double bond, and is represented by —C ( ⁇ O) —.
- the reactive functional group containing the carbonyl group is not particularly limited.
- a carbonate group, a carboxylic acid halide group (halogenoformyl group), a formyl group, a carboxyl group, an ester bond (—C ( ⁇ O) O—), an acid Anhydride bond (—C ( ⁇ O) O—C ( ⁇ O) —), isocyanate group, amide group, imide group (—C ( ⁇ O) —NH—C ( ⁇ O) —), urethane bond (— NH—C ( ⁇ O) O—), carbamoyl group (NH 2 —C ( ⁇ O) —), carbamoyloxy group (NH 2 —C ( ⁇ O) O—), ureido group (NH 2 —C ( O) —NH—), oxamoy
- the hydrogen atom bonded to the nitrogen atom may be substituted with a hydrocarbon group such as an alkyl group, for example. .
- the reactive functional group is easy to introduce, and since the fluororesin (b1) has moderate heat resistance and good adhesion at a relatively low temperature, an amide group, a carbamoyl group, a hydroxyl group, a carboxyl group , A carbonate group, a carboxylic acid halide group, and an acid anhydride bond are preferable, and an amide group, a carbamoyl group, a hydroxyl group, a carbonate group, a carboxylic acid halide group, and an acid anhydride bond are more preferable.
- the fluororesin (b1) can be obtained by a conventionally known polymerization method such as suspension polymerization, solution polymerization, emulsion polymerization or bulk polymerization. In the polymerization, each condition such as temperature and pressure, the polymerization initiator and other additives can be appropriately set according to the composition and amount of the fluororesin (b1).
- the melting point of the fluororesin (b1) is not particularly limited, but is preferably 160 to 270 ° C.
- the melting point of the fluororesin (b1) is determined as a temperature corresponding to the maximum value in the heat of fusion curve when the temperature is raised at a rate of 10 ° C./min using a DSC device (Seiko).
- the molecular weight of the fluororesin (b1) is preferably in a range where the obtained laminate can exhibit good mechanical properties, low fuel permeability, and the like.
- the melt flow rate (MFR) is used as an index of molecular weight
- the MFR at an arbitrary temperature in the range of about 230 to 350 ° C., which is a general molding temperature range of fluororesin is 0.5 to 100 g / 10 minutes. It is preferable. More preferably, it is 1 to 50 g / 10 minutes, and still more preferably 2 to 35 g / 10 minutes.
- MFR is measured at 297 ° C.
- the above MFR uses a melt indexer (manufactured by Toyo Seiki Seisakusho).
- melt indexer manufactured by Toyo Seiki Seisakusho.
- the weight of the polymer flowing out from a nozzle having a diameter of 2 mm and a length of 8 mm under a load of 297 ° C. and 5 kg per unit time (10 minutes) (g) can be determined by measuring.
- the fluororesin layer (B) may contain one of these fluororesins (b1), or may contain two or more.
- a perhalopolymer is a polymer in which halogen atoms are bonded to all the carbon atoms constituting the main chain of the polymer.
- the fluororesin layer (B) is a blend of various fillers such as inorganic powder, glass fiber, carbon powder, carbon fiber, and metal oxide, as long as the performance is not impaired depending on the purpose and application. There may be.
- smectite-based lamellar minerals such as montmorillonite, beidellite, saponite, nontronite, hectorite, soconite, and stevensite, and fine layered minerals with high aspect ratio such as mica are used. It may be added.
- a conductive filler may be added.
- the conductive filler is not particularly limited, and examples thereof include conductive simple powder such as metal and carbon or conductive single fiber; powder of conductive compound such as zinc oxide; surface conductive powder.
- conductive simple powder such as metal and carbon or conductive single fiber
- powder of conductive compound such as zinc oxide
- surface conductive powder it is preferable to prepare a pellet in advance by melt-kneading.
- the conductive single powder or conductive single fiber is not particularly limited, and is described in, for example, metal powder such as copper and nickel; metal fiber such as iron and stainless steel; carbon black, carbon fiber, and Japanese Patent Laid-Open No. 3-174018 Carbon fibrils and the like.
- the surface conductive treatment powder is a powder obtained by conducting a conductive treatment on the surface of a nonconductive powder such as glass beads or titanium oxide.
- the method for the surface conductive treatment is not particularly limited, and examples thereof include metal sputtering and electroless plating.
- carbon black is preferably used because it is advantageous in terms of economy and prevention of electrostatic charge accumulation.
- the volume resistivity of the fluororesin composition comprising a conductive filler is preferably 1 ⁇ 10 0 to 1 ⁇ 10 9 ⁇ ⁇ cm.
- a more preferred lower limit is 1 ⁇ 10 2 ⁇ ⁇ cm, and a more preferred upper limit is 1 ⁇ 10 8 ⁇ ⁇ cm.
- the thickness of the fluororubber layer (A) is not limited, but is preferably 100 ⁇ m or more, for example.
- the upper limit of the thickness of the fluororubber layer (A) is, for example, 5000 ⁇ m.
- the thickness of the said fluororesin layer (B) is not limited, For example, it is preferable that it is 10 micrometers or more.
- the upper limit of the thickness of the fluororesin layer (B) is, for example, 1000 ⁇ m.
- the adhesive strength between the fluororubber layer (A) and the fluororesin layer (B) is preferably 7 N / cm or more, and more preferably 11 N / cm or more.
- the adhesive strength is 7 N / cm or more, there is an advantage that displacement does not easily occur when the hose is vulcanized in a specific shape, and peeling does not occur when an impact is applied.
- the laminated body of this invention can make adhesive strength into the said range by having the said structure.
- the adhesive strength is more preferably 12 N / cm or more, and particularly preferably 15 N / cm or more.
- the laminate was cut into strips of width 10 mm ⁇ length 40 mm ⁇ 3 sets, sample pieces were prepared, and the fluororubber layer (A) and the fluororesin layer (B) for the test pieces.
- the interface between the fluororubber layer (A) and the fluororesin layer (B) is once gently pulled by hand in order to measure the adhesive strength of only the adhesive surface.
- an autograph AGS-J 5 kN, manufactured by Shimadzu Corporation
- JIS-K-6256 vulcanized rubber adhesion test method
- the fluorororubber layer (A) and the fluororesin layer (B) are preferably vulcanized and bonded.
- Such a laminate can be obtained by laminating an unvulcanized fluororubber layer (A) and a fluororesin layer (B) and then vulcanizing.
- vulcanization treatment conventionally known vulcanization methods and conditions for fluorororubber compositions can be employed. For example, a method of vulcanizing an unvulcanized laminate for a long time, a heat treatment as a pretreatment for the unvulcanized laminate in a relatively short time (which also causes vulcanization), and then vulcanizing for a long time. There is a method of performing sulfuration.
- a method in which the unvulcanized laminate is subjected to a heat treatment as a pretreatment in a relatively short time, and then vulcanized over a long time is obtained by performing the pretreatment with a fluororubber layer (A) and a fluororesin layer ( Adhesion with B) can be easily obtained, and since the fluororubber layer (A) has already been vulcanized in the pretreatment and the shape is stabilized, there are various methods for holding the laminate in subsequent vulcanization. It is preferable that it can be selected.
- the conditions for the vulcanization treatment are not particularly limited and can be performed under ordinary conditions, but at 140 to 180 ° C. for 2 to 80 minutes, steam, press, oven, air bath, infrared, microwave,
- the treatment is preferably performed using lead vulcanization or the like. More preferably, it is carried out at 150 to 170 ° C. for 5 to 60 minutes.
- the vulcanization treatment may be performed separately for primary vulcanization and secondary vulcanization.
- a method for producing a laminate comprising a fluororesin (b1) that is not more than day is preferable as a production method for producing a laminate in which a fluororubber layer and a fluororesin layer are firmly bonded.
- the laminate of the present invention described above can be manufactured by the above manufacturing method. In the production method of the present invention, the conditions for the vulcanization treatment are the same as those described above.
- the step of mixing the fluororubber, the basic polyfunctional compound, and the compound (a) to obtain a fluororubber composition includes, for example, the fluororubber, the basic polyfunctional compound, and the compound (a).
- a fluororubber composition includes, for example, the fluororubber, the basic polyfunctional compound, and the compound (a).
- a rubber kneading apparatus a roll, a kneader, a Banbury mixer, an internal mixer, a twin screw extruder, or the like can be used.
- the mixing is performed according to need, such as a vulcanizing agent, a vulcanizing aid, a co-vulcanizing agent, a vulcanizing accelerator, and a filling. It may be mixed with other additives such as materials.
- the mixing temperature is, for example, 20 to 200 ° C.
- the mixing time is, for example, 2 to 80 minutes.
- the unvulcanized fluororubber layer and the fluororesin layer are laminated by separately molding the unvulcanized fluororubber layer and the fluororesin layer by means such as pressure bonding. And a method in which a fluororesin layer is formed by applying a fluororesin to an unvulcanized fluororubber layer.
- Molding of the unvulcanized fluororubber layer can be done in various shapes such as sheet, tube, etc. by heat compression molding method, transfer molding method, extrusion molding method, injection molding method, calendar molding method, coating method, etc. It can be set as this molded object.
- the fluororesin layer can be formed by a method such as heat compression molding, melt extrusion molding, injection molding, or coating (including powder coating).
- a method such as heat compression molding, melt extrusion molding, injection molding, or coating (including powder coating).
- fluororesin molding machines such as injection molding machines, blow molding machines, extrusion molding machines, and various coating devices can be used to produce laminates of various shapes such as sheets and tubes. Is possible. Of these, the melt extrusion molding method is preferred because of its excellent productivity.
- a fluororubber composition that forms an unvulcanized fluororubber layer and a fluororesin (b1) that forms a fluororesin layer are used.
- Examples thereof include a method of laminating simultaneously with molding by a method such as a multilayer compression molding method, a multilayer transfer molding method, a multilayer extrusion molding method, a multilayer injection molding method, and a doubling method.
- the laminate of the present invention may have a two-layer structure of a fluororubber layer (A) and a fluororesin layer (B), or a fluororubber layer (A) laminated on both sides of the fluororesin layer (B).
- the fluororesin layer (B) may be laminated on both sides of the fluororubber layer (A).
- a three-layer structure of fluororubber layer (A) -fluororesin layer (B) -fluororubber layer (A) or fluororesin layer (B) -fluororubber layer (A) -fluororesin layer (B) may be used.
- it may be a multilayer structure of three or more layers in which polymer layers (C) other than the fluororubber layer (A) and the fluororesin layer (B) are bonded, or the fluororubber layer (A) and the fluororesin layer (
- the polymer layer (D) may be provided on one side or both sides of a three-layer multilayer structure to which a polymer layer (C) other than B) is bonded.
- the polymer layer (C) and the polymer layer (D) may be the same or different.
- the laminate of the present invention may have a polymer layer (C) on one side or both sides of a three-layer structure of fluororubber layer (A) -fluororesin layer (B) -fluororubber layer (A).
- the polymer layers (C) and (D) may be rubber layers (C1) or (D1) other than the fluororubber layer (A).
- Examples of the rubber layer (C1) or (D1) include a non-fluorinated rubber layer (C1a) or (D1a) formed from a non-fluorinated rubber. Non-fluorinated rubber is preferred because of its good cold resistance and excellent cost.
- the non-fluorine rubber layer (C1a) and the non-fluorine rubber layer (D1a) may be formed from the same non-fluorine rubber, or may be formed from different non-fluorine rubbers.
- the laminate of the present invention may be laminated in the order of fluororubber layer (A) -fluororesin layer (B) -non-fluororubber layer (C1a). Further, it further includes a non-fluorine rubber layer (D1a), in the order of non-fluorine rubber layer (D1a) -fluorine rubber layer (A) -fluorine resin layer (B) -non-fluorine rubber layer (C1a), A) -fluorine resin layer (B) -non-fluorine rubber layer (D1a) -non-fluorine rubber layer (C1a), or fluorine rubber layer (A) -fluorine resin layer (B) -non-fluorine rubber layer (C1a) ) -Non-fluorinated rubber layer (D1a) may be laminated in this order.
- a non-fluorine rubber layer (D1a) in the order of non-fluorine rubber layer (D1a)
- non-fluorine rubber examples include, for example, acrylonitrile-butadiene rubber (NBR) or a hydride thereof (HNBR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), butadiene rubber (BR), and natural rubber (NR).
- NBR acrylonitrile-butadiene rubber
- HNBR hydride thereof
- SBR styrene-butadiene rubber
- CR chloroprene rubber
- BR butadiene rubber
- natural rubber NR
- Diene rubber such as isoprene rubber (IR), ethylene-propylene-termonomer copolymer rubber, silicone rubber, butyl rubber, epichlorohydrin rubber, acrylic rubber, chlorinated polyethylene (CPE), acrylonitrile-butadiene rubber and vinyl chloride Examples thereof include polyblend (PVC-NBR), ethylene propylene diene rubber (EPDM), chlorosulfonated polyethylene (CSM) and the like.
- gum which mixed these non-fluororubbers and fluororubbers in arbitrary ratios is mention
- the non-fluorine rubber is preferably a diene rubber or epichlorohydrin rubber from the viewpoint of good heat resistance, oil resistance, weather resistance and extrusion moldability. More preferred is NBR, HNBR or epichlorohydrin rubber.
- the rubber layer (C1) is preferably made of NBR, HNBR or epichlorohydrin rubber.
- the rubber layer (D1) is made of acrylonitrile-butadiene rubber, epichlorohydrin rubber, chlorinated polyethylene (CPE), acrylonitrile-butadiene rubber and vinyl chloride polyblend (PVC-NBR), ethylene propylene diene in terms of weather resistance and cost. It is preferably made of rubber (EPDM), acrylic rubber, or a mixture thereof. In addition, you may mix
- the rubber layer (C1) is composed of acrylonitrile butadiene rubber, hydrogenated acrylonitrile butadiene rubber, epichlorohydrin rubber, or acrylonitrile butadiene. A layer made of a mixture of rubber and acrylic rubber is preferred.
- the fuel pipe has a three-layer structure of a fluororubber layer (A) -a fluororesin layer (B) -a rubber layer (C1). A fluororubber layer is provided as the rubber layer (C1), and the rubber layer (C1) is connected to the pipe.
- Three-layer structure of resin layer-fluorine rubber layer (A) -resin layer A three-layer structure of fluororesin layer (B) -fluorine rubber layer (A) -fluorine resin layer (B) can be mentioned.
- the inner and outer resin layers may be the same type or different types.
- an optional fluorororubber layer (A) or rubber layer (C1) and fluororesin layer (B) are laminated according to the purpose. May be.
- a layer such as a metal foil may be provided, or an adhesive layer may be interposed other than the interlayer between the fluororubber layer (A) and the fluororesin layer (B).
- a reinforcing layer such as a reinforcing yarn may be provided as appropriate.
- the laminate of the present invention is excellent in low fuel permeability, heat resistance, oil resistance, fuel oil resistance, LLC resistance, steam resistance, weather resistance, ozone resistance, and under severe conditions. Can be used for various purposes.
- automotive engine main body main motion system, valve system, lubrication / cooling system, fuel system, intake / exhaust system, drive system transmission system, chassis steering system, brake system, etc.
- Gaskets that require heat resistance, oil resistance, fuel oil resistance, LLC resistance, steam resistance, non-contact type and contact type packings (self-sealing) such as basic electric parts, control system electric parts, equipment electric parts, etc. (Packing, piston ring, split ring type packing, mechanical seal, oil seal, etc.), etc., and suitable characteristics as bellows, diaphragm, hose, tube, electric wire, etc.
- gaskets such as general gaskets, seals such as O-rings, packing, timing belt cover gaskets, hoses such as control hoses, anti-vibration rubber for engine mounts, hydrogen Sealing material for high pressure valves in storage systems.
- Shaft seals such as crankshaft seals and camshaft seals for the main motion system.
- Lubricating / cooling engine oil cooler hose oil return hose, seal gasket, water hose around radiator, vacuum pump oil hose for vacuum pump, etc.
- CAC composite air control
- Transmission related bearing seals oil seals, O-rings, packings, torque converter hoses, etc. AT transmission oil hoses, ATF hoses, O-rings, packings, etc.
- Brake oil seals O-rings, packings, brake oil hoses, etc., master back atmospheric valves, vacuum valves, diaphragms, master cylinder piston cups (rubber cups), caliper seals, boots, etc.
- Tubes of harness exterior parts such as insulators and sheaths of electric wires (harnesses) of basic electrical components.
- Coating materials for various sensor wires for control system electrical components are Coating materials for various sensor wires for control system electrical components.
- medical applications include medicine plugs, bottle cap seals, can seals, medicinal tapes, medicinal pads, syringe syringe packings, transdermal drug substrates, suckers for baby bottles, medical bags, catheters, infusions, etc.
- examples of the offshore molded product to which the laminate of the present invention can be applied include subsea oil field tubes or hoses (including injection tubes and crude oil transfer tubes).
- the laminate is particularly preferably used as a tube or a hose. That is, the laminate is preferably a tube or a hose. Among tubes, it can be suitably used as a fuel piping tube or hose for automobiles in terms of heat resistance and low fuel permeability.
- the fuel pipe made of the laminate in the present invention can be produced by a usual method and is not particularly limited.
- melt flow rate For the fluororesins listed in Table 1, a melt indexer (manufactured by Toyo Seiki Seisakusho Co., Ltd.) was used, and the polymer flowing out from a nozzle having a diameter of 2 mm and a length of 8 mm under a load of 297 ° C. and 5 kg per unit time (10 minutes). The weight (g) was measured.
- a melt indexer manufactured by Toyo Seiki Seisakusho
- the fuel permeation coefficient (g ⁇ mm / m 2 / day) was calculated from the change in mass per unit time (part where the mass change at the beginning of measurement was constant), the surface area of the sheet in the wetted part, and the thickness of the sheet.
- An average particle diameter laser diffraction particle size distribution measuring device (manufactured by Nippon Laser Co., Ltd.) of low molecular weight PTFE is used, the cascade is not used, the particle size distribution is measured at a pressure of 0.1 MPa and a measurement time of 3 seconds. The value corresponding to 50% of the accumulated particle size distribution was taken as the average particle size.
- Adhesiveness The obtained laminate was cut into strips having a width of 10 mm, a length of 40 mm, and 3 sets, and a sample piece was prepared by peeling off the fluororesin sheet and grasping it. This test piece does not include the adhesive strength at the interface between the fluororubber layer and the fluororesin layer.
- the fluororubber composition or the fluororesin broke down at the interface of the laminate and could not be peeled off at the interface.
- X Easy peeling at the interface of the laminate.
- the maximum torque value (MH) and the minimum torque value (ML) are measured at 170 ° C. for the fluorororubber composition using a curast meter type II (model number: JSR curast meter, manufactured by JSR).
- the induction time (T10) and the optimum vulcanization time (T90) were determined. Table 3 shows the measurement results. T10 is a time when ⁇ (MH) ⁇ (ML) ⁇ ⁇ 0.1 + ML, T90 is a time when ⁇ (MH) ⁇ (ML) ⁇ ⁇ 0.9 + ML, and MH and ML are , Measured according to JIS K 6300-2.
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Abstract
Description
以下、各構成要素について説明する。
上記フッ素ゴム層(A)は、フッ素ゴム組成物から形成される層である。上記フッ素ゴム層(A)は、通常、フッ素ゴム組成物を成形して未加硫フッ素ゴム層を得た後、加硫処理して得られるものである。
フッ素ゴムは、通常、主鎖を構成する炭素原子に結合しているフッ素原子を有し、且つゴム弾性を有する非晶質の重合体からなる。上記フッ素ゴムは、1種の重合体からなるものであってもよいし、2種以上の重合体からなるものであってもよい。フッ素ゴムは、通常、明確な融点を有さないものである。
VdF及び含フッ素エチレン性単量体単位(a)と共重合可能な単量体由来の共重合単位(但し、VdF単位は除く。)は、VdF単位と含フッ素エチレン性単量体(a)由来の共重合単位の合計量に対して、0~10モル%であることが好ましい。
CFX=CXOCF2OR1 (2)
(式中、Xは、同一又は異なり、H、F又はCF3を表し、R1は、直鎖又は分岐した、H、Cl、Br及びIからなる群より選択される少なくとも1種の原子を1~2個含んでいてもよい炭素数が1~6のフルオロアルキル基、若しくは、H、Cl、Br及びIからなる群より選択される少なくとも1種の原子を1~2個含んでいてもよい炭素数が5又は6の環状フルオロアルキル基を表す。)で表されるフルオロビニルエーテルなどの含フッ素単量体が挙げられる。これらのなかでも、式(2)で表されるフルオロビニルエーテル、TFE、HFP及びPAVEからなる群より選択される少なくとも1種であることが好ましく、TFE、HFP及びPAVEからなる群より選択される少なくとも1種であることがより好ましい。
CF2=CFO(CF2CFY1O)p-(CF2CF2CF2O)q-Rf (3)
(式中、Y1はF又はCF3を表し、Rfは炭素数1~5のパーフルオロアルキル基を表す。pは0~5の整数を表し、qは0~5の整数を表す。)であることが好ましい。
上記PAVEとしては、パーフルオロ(メチルビニルエーテル)又はパーフルオロ(プロピルビニルエーテル)であることがより好ましく、パーフルオロ(メチルビニルエーテル)であることが更に好ましい。これらをそれぞれ単独で、又は任意に組み合わせて用いることができる。
R2IxBry
(式中、x及びyはそれぞれ0~2の整数であり、かつ1≦x+y≦2を満たすものであり、R2は、炭素数1~16の飽和若しくは不飽和のフルオロ炭化水素基、炭素数1~16の飽和若しくは不飽和のクロロフルオロ炭化水素基、炭素数1~3の炭化水素基、又は、ヨウ素原子若しくは臭素原子で置換されていてもよい炭素数3~10の環状炭化水素基であり、これらは酸素原子を含んでいてもよい)で表される化合物が挙げられる。
ムーニー粘度は、ASTM-D1646に準拠して測定することができる。
測定機器:ALPHA TECHNOLOGIES社製のMV2000E型
ローター回転数:2rpm
測定温度:100℃
上記フッ素ゴム組成物は、フッ素樹脂(a1)及びリン化合物(a2)からなる群より選択される少なくとも1種の化合物(a)を含む。
上記フッ素ゴム組成物が上記フッ素樹脂(a1)を含むことにより、上記フッ素ゴム層(A)と上記フッ素樹脂層(B)とが強固に接着する。フッ素樹脂は、通常、融点を有し、熱可塑性を有する。
上記低分子量PTFEは、数平均分子量が60万以下のTFE重合体である。数平均分子量が60万を超える「高分子量PTFE」は、PTFE特有のフィブリル化特性が発現する(例えば、特開平10-147617号公報参照。)。高分子量PTFEは、溶融粘度が高く、非溶融加工性である。高分子量PTFEは、添加剤として用いるとフィブリル化特性が発現するため、PTFE粒子同士が凝集しやすくなり、マトリックス材料への分散性が劣る。
上記平均粒径は、レーザー回折式粒度分布測定装置(例えば、日本レーザー社製)を用い、カスケードは使用せず、圧力0.1MPa、測定時間3秒で粒度分布を測定し、得られた粒度分布積算の50%に対応する値に等しいとする。
上記MFRは、メルトインデクサー(例えば、東洋精機製作所社製)を用い、372℃、1.2kg荷重下で直径2mm、長さ8mmのノズルから単位時間(10分間)に流出するポリマーの重量(g)を測定することにより特定できる。
上記変性PTFEは、TFEと共重合可能な変性モノマー単位の含有量が全単量体単位の0.01~1質量%であることが好ましく、0.01~0.5質量%であることが更に好ましく、0.03~0.3質量%であることが最も好ましい。
本明細書において、上記変性モノマー単位とは、変性PTFEの分子構造の一部分であって変性モノマーに由来する部分を意味し、全単量体単位とは、変性PTFEの分子構造における全ての単量体に由来する部分を意味する。上記変性モノマー単位の含有量は、赤外分光分析又はNMR(核磁気共鳴)を行うことにより測定する値である。
CF2=CF-ORf (I)
(式中、Rfは、パーフルオロ有機基を表す。)で表されるパーフルオロ不飽和化合物等が挙げられる。本明細書において、上記「パーフルオロ有機基」とは、炭素原子に結合する水素原子が全てフッ素原子に置換されてなる有機基を意味する。上記パーフルオロ有機基は、エーテル酸素を有していてもよい。
上記平均粒径は、レーザー回折式粒度分布測定装置(例えば、日本レーザー社製)を用い、カスケードは使用せず、圧力0.1MPa、測定時間3秒で粒度分布を測定し、得られた粒度分布積算の50%に対応する値に等しいとする。
上記フッ素ゴム組成物がリン化合物(a2)を含むことにより、上記フッ素ゴム層(A)と上記フッ素樹脂層(B)とが強固に接着する。リン化合物(a2)は、1分子中に少なくとも1つのリン原子を含む化合物であり、例えば、ホスフィン類、リン酸エステル類、ホスファゼン類、ホスフィンオキシド類、ホスホン酸エステル類、ホスフィン酸エステル類等が挙げられる。
上記フッ素ゴム組成物は、塩基性の多官能化合物を含み、これによって、フッ素ゴム層(A)とフッ素樹脂層(B)とがより強固に接着する。上記塩基性の多官能化合物は、1つの分子中に同一又は異なる構造の2つ以上の官能基を有し、塩基性を示す化合物である。
ここで、窒素-窒素間の原子間距離は下記の方法に従って計算する。すなわち、各塩基の構造最適化は密度汎関数法(プログラムはGaussian03、密度汎関数はB3LYP、基底関数は6-31G*)を用いて算出する。
上記フッ素ゴム組成物は、フッ素ゴム層(A)とフッ素樹脂層(B)とがより強固に接着することから、更に、加硫剤を含むことも好ましい。上記加硫剤としては、パーオキサイド加硫系加硫剤等を目的に応じて選択することができる。上記フッ素ゴム組成物は、パーオキサイド加硫系加硫剤を含むことが好ましい。
フッ素樹脂層(B)は、フッ素樹脂(b1)から構成されるものであり、該フッ素樹脂(b1)は、燃料透過係数が2.0g・mm/m2/day以下である。
燃料透過係数が2.0g・mm/m2/day以下であることによって、優れた燃料低透過性が発揮される。従って、例えば、本発明の積層体は、燃料用ホース等として好適に使用可能である。
上記燃料透過係数は、1.5g・mm/m2/day以下であることが好ましく、0.8g・mm/m2/day以下であることがより好ましく、0.55g・mm/m2/day以下であることが更に好ましく、0.5g・mm/m2/day以下であることが特に好ましい。
上記燃料透過係数は、イソオクタン、トルエン及びエタノールを45:45:10の容積比で混合したイソオクタン/トルエン/エタノール混合溶媒18mLを投入した内径40mmφ、高さ20mmのSUS316製の燃料透過係数測定用カップに測定対象樹脂から下記方法により作製したフッ素樹脂シート(直径45mm、厚み120μm)を組み入れ、60℃において測定した質量変化から算出される値である。
(フッ素樹脂シートの作製方法)
樹脂ペレットを、それぞれ、直径120mmの金型に入れ、300℃に加熱したプレス機にセットし、約2.9MPaの圧力で溶融プレスして、厚さ0.12mmのフッ素樹脂シートを得、そのシートを直径45mm、厚み120μmに加工する。
CH2=CX1(CF2)nX2
(式中、X1はH又はF、X2はH、F又はCl、nは1~10の整数である)で示される単量体、エチレン、プロピレン、1-ブテン、2-ブテン、塩化ビニル、及び、塩化ビニリデンからなる群より選択される少なくとも1種の単量体に由来する共重合単位と、を含むことが好ましい。
また、CTFE系共重合体は、パーハロポリマーであることがより好ましい。
CH結合を有するモノマーを含まないパーハロポリマーはフッ素ゴムとの接着が通常困難であるが、本発明の構成によれば、フッ素樹脂層(B)がパーハロポリマーからなる層であっても、フッ素樹脂層(B)とフッ素ゴム層(A)との層間の接着は強固である。
上記アルキルパーフルオロビニルエーテル誘導体としては、Rf2が炭素数1~3のパーフルオロアルキル基であるものが好ましく、CF2=CF-OCF2-CF2CF3がより好ましい。
上記CTFE/TFE/PAVE共重合体とは、実質的にCTFE、TFE及びPAVEのみからなる共重合体である。
CTFE/TFE/PAVE共重合体において、PAVE単位は、全単量体単位の0.5モル%以上であることが好ましく、5モル%以下であることが好ましい。
上記MFRは、メルトインデクサー(東洋精機製作所社製)を用い、例えば、297℃、5kg荷重下で直径2mm、長さ8mmのノズルから単位時間(10分間)に流出するポリマーの重量(g)を測定することにより特定できる。
本発明の積層体において、上記フッ素ゴム層(A)の厚みは限定されないが、例えば、100μm以上であることが好ましい。上記フッ素ゴム層(A)の厚みの上限としては、例えば、5000μmである。
上記製造方法により、上述した本発明の積層体を製造することができる。
本発明の製造方法において、加硫処理の条件は上述したものと同じである。
上記ゴム混練り装置としては、ロール、ニーダー、バンバリーミキサー、インターナルミキサー、二軸押し出し機等を用いることができる。
上記混合は、上記フッ素ゴムと、塩基性の多官能化合物と、化合物(a)とに加え、必要に応じて、加硫剤、加硫助剤、共加硫剤、加硫促進剤、充填材等のその他添加剤とともに混合するものであってよい。
上記混合の温度は、例えば、20~200℃である。また、上記混合の時間は、例えば、2~80分である。
本発明の積層体は、フッ素ゴム層(A)とフッ素樹脂層(B)の2層構造でもよいし、フッ素樹脂層(B)の両側にフッ素ゴム層(A)が積層されたものであってもよいし、フッ素ゴム層(A)の両側にフッ素樹脂層(B)が積層されたものであってもよい。
例えば、フッ素ゴム層(A)-フッ素樹脂層(B)-フッ素ゴム層(A)又はフッ素樹脂層(B)-フッ素ゴム層(A)-フッ素樹脂層(B)といった3層構造でもよい。
さらに、フッ素ゴム層(A)及びフッ素樹脂層(B)以外のポリマー層(C)が接着された3層以上の多層構造であってもよいし、フッ素ゴム層(A)及びフッ素樹脂層(B)以外のポリマー層(C)が接着された3層の多層構造の片側もしくは両側にポリマー層(D)を有していてもよい。ポリマー層(C)とポリマー層(D)は同じであってもよいし、異なっていてもよい。
本発明の積層体は、フッ素ゴム層(A)-フッ素樹脂層(B)-非フッ素ゴム層(C1a)の順に積層されているものであってもよい。
また、更に、非フッ素ゴム層(D1a)を含み、非フッ素ゴム層(D1a)-フッ素ゴム層(A)-フッ素樹脂層(B)-非フッ素ゴム層(C1a)の順、フッ素ゴム層(A)-フッ素樹脂層(B)-非フッ素ゴム層(D1a)-非フッ素ゴム層(C1a)の順、又は、フッ素ゴム層(A)-フッ素樹脂層(B)-非フッ素ゴム層(C1a)-非フッ素ゴム層(D1a)の順、に積層されているものであってもよい。
基本構造であり、従来、フッ素樹脂層(B)とフッ素ゴム層(A)を積層させるには、層間(フッ素ゴム層-フッ素樹脂層)の接着が不充分なため、樹脂側において表面処理を施したり、別途接着剤を層間に塗布したり、テープ状のフィルムを巻き付けて固定したり等と工程が複雑になりがちであったが、そのような複雑な工程を組まずに、加硫することにより加硫接着が起こり化学的に強固な接着が得られる。
フッ素ゴム層(A)-フッ素樹脂層(B)-フッ素ゴム層(A)の3層構造、及び、フッ素ゴム層(A)-フッ素樹脂層(B)-ゴム層(C1)の3層構造がある。
シール性が要求される場合、たとえば燃料配管等の接合部は、シール性保持のためにゴム層を両側に配置することが望ましい。内外層のゴム層は同じ種類であっても、違う種類であってもよい。
フッ素ゴム層(A)-フッ素樹脂層(B)-ゴム層(C1)の3層構造の場合、ゴム層(C1)は、アクリロニトリルブタジエンゴム、水素化アクリロニトリルブタジエンゴム、エピクロルヒドリンゴム、又は、アクリロニトリルブタジエンゴムとアクリル系ゴムの混合物からなる層であることが好ましい。
また、燃料配管をフッ素ゴム層(A)-フッ素樹脂層(B)-ゴム層(C1)の3層構造とし、ゴム層(C1)としてフッ素ゴム層を設け、ゴム層(C1)を配管の内層にすることにより、耐薬品性、燃料低透過性が向上する。
フッ素樹脂層(B)-フッ素ゴム層(A)-フッ素樹脂層(B)の3層構造が挙げられる。内外層の樹脂層は同じ種類であっても、違う種類であってもよい。
(2)~(4)の3層構造に加えて、さらに任意のフッ素ゴム層(A)又はゴム層(C1)、フッ素樹脂層(B)を目的に応じて積層してもよい。また、金属箔等の層を設けてもよいし、フッ素ゴム層(A)とフッ素樹脂層(B)との層間以外には接着剤層を介在させてもよい。
また、耐圧向上の目的で、補強糸等の補強層を適宜設けてもよい。
19F-NMR分析により測定した。
セイコー型DSC装置を用い、10℃/分の速度で昇温したときの融解ピークを記録し、極大値に対応する温度を融点とした。
表1に記載のフッ素樹脂については、メルトインデクサー(東洋精機製作所社製)を用い、297℃、5kg加重下で直径2mm、長さ8mmのノズルから単位時間(10分間)に流出するポリマーの重量(g)を測定した。
低分子量PTFEについては、メルトインデクサー(東洋精機製作所社製)を用い、372℃、1.2kg加重下で直径2mm、長さ8mmのノズルから単位時間(10分間)に流出するポリマーの重量(g)を測定した。
フッ素樹脂ペレットを、それぞれ、直径120mmの金型に入れ、300℃に加熱したプレス機にセットし、約2.9MPaの圧力で溶融プレスして、厚さ0.12mmのシートを得た。CE10(イソオクタンとトルエンとの容量比50:50の混合物にエタノール10容量%を混合した燃料)を18mL投入した内径40mmφ、高さ20mmのSUS316製の透過係数測定用カップに得られたシートを入れ、60℃における質量変化を1000時間まで測定した。時間あたりの質量変化(測定初期における質量変化が一定の部分)、接液部のシートの表面積およびシートの厚さから燃料透過係数(g・mm/m2/day)を算出した。
レーザー回折式粒度分布測定装置(日本レーザー社製)を用い、カスケードは使用せず、圧力0.1MPa、測定時間3秒で粒度分布を測定し、得られた粒度分布積算の50%に対応する値を平均粒径とした。
得られた積層体を幅10mm×長さ40mm×3セットの短冊状に切断し、フッ素樹脂シートを剥がして掴みしろとした試料片を作成した。この試験片について、フッ素ゴム層とフッ素樹脂層との境界面の接着強度を含まず、接着面のみの接着強度を測定するために、フッ素ゴム層とフッ素樹脂層の界面を一度ゆっくりと手で引っ張ることにより2~3mm掴みしろを増やしてから、オートグラフ(島津製作所社製 AGS-J 5kN)を使用して、JIS K-6256(加硫ゴムの接着試験方法)に記載の方法に準拠し、25℃において50mm/minの引張速度で剥離試験を行い、接着強度を測定し、得られたN=3のデータの平均値を算出した。また、剥離モードを観測し、以下の基準で評価した。
○・・・一部材料破壊を生じ、積層体の界面での剥離強度が7N/cm以上であった。
×・・・積層体の界面で容易に剥離が可能であった。
フッ素ゴム(2):ダイエルG802、ダイキン工業社製
カーボンブラック:Thermax N-990、カンカーブ社製
加硫助剤:トリアリルイソシアヌレート(TAIC)、日本化成社製
加硫剤:パーオキサイド加硫系加硫剤、パーヘキサ25B、日油社製
ホスフィン(1):1,2-ビス(ジフェニルホスフィノ)エタン、東京化成工業社製
ホスフィン(2):クロロジフェニルホスフィン、東京化成工業社製
ホスフィン(3):トリス2,6-ジメトキシフェニルホスフィン、東京化成工業社製
ホスフィン(4):トリフェニルホスフィン、東京化成工業社製
ホスホニウム塩(5):トリブチル(シアノメチル)ホスホニウムクロリド、東京化成工業社製
塩基性多官能化合物:N,N’-ジシンナミリデン-1,6-ヘキサメチレンジアミン(V-3、ダイキン工業社製)
(フッ素樹脂シートの製造)
表1に記載のフッ素樹脂を用いて、厚み120μm(0.12mm)のシートが得られるようにスペーサーを置き、280℃で10分プレスすることによってフッ素樹脂シートを得た。
表3及び表4に示す材料を、8インチオープンロールを用いて混練することにより、約3mmの厚みのシート状のフッ素ゴム組成物(フッ素ゴムシート)を得た。
厚さ約3mmのフッ素ゴムシートと、厚さ約0.12mmのフッ素樹脂シートを重ね合わせ、片方の端部に幅約50mmのフッ素樹脂フィルム(厚さ10μm)を両シートの間に挟んだ後、プレス圧300kgf/cm2、170℃で45分間プレスすることにより、シート状の積層体を得た。結果を表3及び表4に示す。
Claims (11)
- フッ素ゴム層(A)と、フッ素ゴム層(A)上に積層されたフッ素樹脂層(B)と、を備える積層体であって、
フッ素ゴム層(A)は、フッ素ゴム組成物から形成される層であり、
前記フッ素ゴム組成物は、フッ素ゴム、塩基性の多官能化合物、並びに、フッ素樹脂(a1)及びリン化合物(a2)からなる群より選択される少なくとも1種の化合物(a)を含み、
化合物(a)の含有量が前記フッ素ゴム100質量部に対して0.01~120質量部であり、
フッ素樹脂層(B)は、燃料透過係数が2.0g・mm/m2/day以下であるフッ素樹脂(b1)から構成される
ことを特徴とする積層体。 - フッ素樹脂(a1)は、非溶融加工性ポリテトラフルオロエチレン、低分子量ポリテトラフルオロエチレン、テトラフルオロエチレン/パーフルオロ(アルキルビニルエーテル)共重合体、テトラフルオロエチレン/ヘキサフルオロプロピレン共重合体、エチレン/テトラフルオロエチレン共重合体、エチレン/テトラフルオロエチレン/ヘキサフルオロプロピレン共重合体、ポリクロロトリフルオロエチレン、クロロトリフルオロエチレン/テトラフルオロエチレン共重合体、エチレン/クロロトリフルオロエチレン共重合体、ポリフッ化ビニル、及び、フルオロモノマー/ビニルエステル共重合体からなる群より選択される少なくとも1種である請求項1記載の積層体。
- リン化合物(a2)は、ホスフィン類である請求項1又は2記載の積層体。
- リン化合物(a2)は、一般式:PR3(式中、3つのRは、同一又は異なって、ハロゲン原子又は有機基を表す)で表されるホスフィン化合物である請求項1、2又は3記載の積層体。
- 前記フッ素ゴム組成物は、更に、パーオキサイド加硫系加硫剤を含む請求項1、2、3又は4記載の積層体。
- フッ素樹脂(b1)は、ポリクロロトリフルオロエチレン、クロロトリフルオロエチレン系共重合体、及び、テトラフルオロエチレン/ヘキサフルオロプロピレン/フッ化ビニリデン共重合体からなる群より選択される少なくとも1種である請求項1、2、3、4又は5記載の積層体。
- フッ素樹脂層(B)の両側にフッ素ゴム層(A)が積層されている請求項1、2、3、4、5又は6記載の積層体。
- フッ素ゴム層(A)の両側にフッ素樹脂層(B)が積層されている請求項1、2、3、4、5又は6記載の積層体。
- 更に、非フッ素ゴム層(C1a)を含み、
フッ素ゴム層(A)-フッ素樹脂層(B)-非フッ素ゴム層(C1a)の順に積層されている請求項1、2、3、4、5又は6記載の積層体。 - 更に、非フッ素ゴム層(D1a)を含み、
非フッ素ゴム層(D1a)-フッ素ゴム層(A)-フッ素樹脂層(B)-非フッ素ゴム層(C1a)の順、フッ素ゴム層(A)-フッ素樹脂層(B)-非フッ素ゴム層(D1a)-非フッ素ゴム層(C1a)の順、又は、フッ素ゴム層(A)-フッ素樹脂層(B)-非フッ素ゴム層(C1a)-非フッ素ゴム層(D1a)の順、に積層されている請求項9記載の積層体。 - フッ素ゴム層(A)とフッ素樹脂層(B)とが加硫接着されている請求項1、2、3、4、5、6、7、8、9又は10記載の積層体。
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- 2017-12-04 CN CN201780079462.9A patent/CN110087878A/zh active Pending
- 2017-12-04 KR KR1020197016731A patent/KR102389664B1/ko active IP Right Grant
- 2017-12-04 JP JP2018558947A patent/JP7004916B2/ja active Active
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US11602920B2 (en) | 2019-02-22 | 2023-03-14 | Daikin Industries, Ltd. | Laminate |
WO2021090713A1 (ja) | 2019-11-05 | 2021-05-14 | ダイキン工業株式会社 | 積層体および押出成形品 |
JP2021075053A (ja) * | 2019-11-05 | 2021-05-20 | ダイキン工業株式会社 | 積層体および押出成形品 |
JP7032676B2 (ja) | 2019-11-05 | 2022-03-09 | ダイキン工業株式会社 | 積層体および押出成形品 |
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JP7316400B1 (ja) | 2022-02-02 | 2023-07-27 | Nok株式会社 | 正・逆両回転用オイルシール |
JP2023112869A (ja) * | 2022-02-02 | 2023-08-15 | Nok株式会社 | 正・逆両回転用オイルシール |
Also Published As
Publication number | Publication date |
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KR102389664B1 (ko) | 2022-04-22 |
EP3543007B1 (en) | 2023-11-22 |
CN110087878A (zh) | 2019-08-02 |
JPWO2018123448A1 (ja) | 2019-06-27 |
EP3543007A1 (en) | 2019-09-25 |
EP3543007A4 (en) | 2020-06-17 |
JP7004916B2 (ja) | 2022-01-21 |
KR20190082889A (ko) | 2019-07-10 |
US11673376B2 (en) | 2023-06-13 |
US20190344545A1 (en) | 2019-11-14 |
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