WO2022259642A1 - 未架橋フッ素ゴム組成物並びにそれを用いて製造されるシール材及びその製造方法 - Google Patents
未架橋フッ素ゴム組成物並びにそれを用いて製造されるシール材及びその製造方法 Download PDFInfo
- Publication number
- WO2022259642A1 WO2022259642A1 PCT/JP2022/008317 JP2022008317W WO2022259642A1 WO 2022259642 A1 WO2022259642 A1 WO 2022259642A1 JP 2022008317 W JP2022008317 W JP 2022008317W WO 2022259642 A1 WO2022259642 A1 WO 2022259642A1
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- WIPO (PCT)
- Prior art keywords
- fluororubber composition
- uncrosslinked
- uncrosslinked fluororubber
- sealing material
- mass
- Prior art date
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- 229920001973 fluoroelastomer Polymers 0.000 title claims abstract description 155
- 239000000203 mixture Substances 0.000 title claims abstract description 141
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 title description 12
- 239000000945 filler Substances 0.000 claims abstract description 72
- 229920001971 elastomer Polymers 0.000 claims abstract description 51
- 239000005060 rubber Substances 0.000 claims abstract description 50
- 229920005989 resin Polymers 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 42
- 239000002608 ionic liquid Substances 0.000 claims abstract description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 54
- 239000003566 sealing material Substances 0.000 claims description 46
- 238000004132 cross linking Methods 0.000 claims description 29
- 239000005011 phenolic resin Substances 0.000 claims description 21
- 239000000377 silicon dioxide Substances 0.000 claims description 21
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 19
- 229920001568 phenolic resin Polymers 0.000 claims description 19
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 17
- 150000001768 cations Chemical class 0.000 claims description 16
- 150000001450 anions Chemical class 0.000 claims description 15
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 claims description 14
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- 238000002156 mixing Methods 0.000 claims description 10
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- 239000003431 cross linking reagent Substances 0.000 claims description 8
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 7
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- 125000001153 fluoro group Chemical group F* 0.000 claims description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 claims description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-O Imidazolium Chemical compound C1=C[NH+]=CN1 RAXXELZNTBOGNW-UHFFFAOYSA-O 0.000 claims description 2
- RWRDLPDLKQPQOW-UHFFFAOYSA-O Pyrrolidinium ion Chemical compound C1CC[NH2+]C1 RWRDLPDLKQPQOW-UHFFFAOYSA-O 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- -1 perfluoro Chemical group 0.000 abstract description 27
- 230000000052 comparative effect Effects 0.000 description 16
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- 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 8
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- 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 3
- 229910002012 Aerosil® Inorganic materials 0.000 description 3
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- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 2
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- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 2
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- 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
- HSLFISVKRDQEBY-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)cyclohexane Chemical compound CC(C)(C)OOC1(OOC(C)(C)C)CCCCC1 HSLFISVKRDQEBY-UHFFFAOYSA-N 0.000 description 1
- MPJPKEMZYOAIRN-UHFFFAOYSA-N 1,3,5-tris(2-methylprop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound CC(=C)CN1C(=O)N(CC(C)=C)C(=O)N(CC(C)=C)C1=O MPJPKEMZYOAIRN-UHFFFAOYSA-N 0.000 description 1
- RDKJRSZNUXGKTG-UHFFFAOYSA-N 1,4-bis(tert-butylperoxy)-2,3-di(propan-2-yl)benzene Chemical compound CC(C)C1=C(OOC(C)(C)C)C=CC(OOC(C)(C)C)=C1C(C)C RDKJRSZNUXGKTG-UHFFFAOYSA-N 0.000 description 1
- IPJGAEWUPXWFPL-UHFFFAOYSA-N 1-[3-(2,5-dioxopyrrol-1-yl)phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C1=CC=CC(N2C(C=CC2=O)=O)=C1 IPJGAEWUPXWFPL-UHFFFAOYSA-N 0.000 description 1
- REACWASHYHDPSQ-UHFFFAOYSA-N 1-butylpyridin-1-ium Chemical compound CCCC[N+]1=CC=CC=C1 REACWASHYHDPSQ-UHFFFAOYSA-N 0.000 description 1
- SWWLEHMBKPSRSI-UHFFFAOYSA-N 1-hexyl-2,3-dimethylimidazol-3-ium Chemical compound CCCCCCN1C=C[N+](C)=C1C SWWLEHMBKPSRSI-UHFFFAOYSA-N 0.000 description 1
- AMKUSFIBHAUBIJ-UHFFFAOYSA-N 1-hexylpyridin-1-ium Chemical compound CCCCCC[N+]1=CC=CC=C1 AMKUSFIBHAUBIJ-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- HWSSEYVMGDIFMH-UHFFFAOYSA-N 2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOC(=O)C(C)=C HWSSEYVMGDIFMH-UHFFFAOYSA-N 0.000 description 1
- LTHJXDSHSVNJKG-UHFFFAOYSA-N 2-[2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOCCOC(=O)C(C)=C LTHJXDSHSVNJKG-UHFFFAOYSA-N 0.000 description 1
- WXDJDZIIPSOZAH-UHFFFAOYSA-N 2-methylpentan-2-yl benzenecarboperoxoate Chemical compound CCCC(C)(C)OOC(=O)C1=CC=CC=C1 WXDJDZIIPSOZAH-UHFFFAOYSA-N 0.000 description 1
- BIISIZOQPWZPPS-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-ylbenzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1 BIISIZOQPWZPPS-UHFFFAOYSA-N 0.000 description 1
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- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 1
- OSCFFOTZWZZXPR-UHFFFAOYSA-N 4-methyl-1-octylpyridin-1-ium Chemical compound CCCCCCCC[N+]1=CC=C(C)C=C1 OSCFFOTZWZZXPR-UHFFFAOYSA-N 0.000 description 1
- 229910002016 Aerosil® 200 Inorganic materials 0.000 description 1
- JGDSPOCXKKSJTF-UHFFFAOYSA-N C(C)(C)(C)OOC1=CC(=C(C=C1C(C)C)C(C)C)OOC(C)(C)C Chemical compound C(C)(C)(C)OOC1=CC(=C(C=C1C(C)C)C(C)C)OOC(C)(C)C JGDSPOCXKKSJTF-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
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- BXIQXYOPGBXIEM-UHFFFAOYSA-N butyl 4,4-bis(tert-butylperoxy)pentanoate Chemical compound CCCCOC(=O)CCC(C)(OOC(C)(C)C)OOC(C)(C)C BXIQXYOPGBXIEM-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions 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; Compositions of derivatives of such polymers
- C08L27/22—Compositions 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; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L27/24—Compositions 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; Compositions of derivatives of such polymers modified by chemical after-treatment halogenated
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
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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
- C08F214/22—Vinylidene fluoride
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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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- C08K5/14—Peroxides
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
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- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
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- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34924—Triazines containing cyanurate groups; Tautomers thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/43—Compounds containing sulfur bound to nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2003/1034—Materials or components characterised by specific properties
- C09K2003/1068—Crosslinkable materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/02—Inorganic compounds
- C09K2200/0243—Silica-rich compounds, e.g. silicates, cement, glass
- C09K2200/0247—Silica
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0615—Macromolecular organic compounds, e.g. prepolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09K2200/0635—Halogen-containing polymers, e.g. PVC
- C09K2200/0637—Fluoro-containing polymers, e.g. PTFE
Definitions
- the present invention relates to an uncrosslinked fluororubber composition, a sealing material produced using the same, and a method for producing the same.
- Patent Document 1 discloses a rubber material for a sealing material containing an uncrosslinked crosslinkable fluororubber, an ionic liquid, and a crosslinker.
- Patent Document 2 discloses that a rubber composition containing a partially fluorinated elastomer rubber and an ionic liquid is used to form a sealing material.
- the present invention is an uncrosslinked fluororubber composition containing a rubber component whose main component is fluororubber, an ionic liquid, and an organic resin filler other than a perfluororesin.
- the present invention is a sealing material formed of a crosslinked fluororubber composition obtained by crosslinking the rubber component of the uncrosslinked fluororubber composition of the present invention.
- the present invention is a method for producing a sealing material, in which the uncrosslinked fluororubber composition of the present invention is formed into the shape of a sealing material and the rubber component is crosslinked.
- the uncrosslinked fluororubber composition according to the embodiment contains a rubber component containing fluororubber as a main component, an ionic liquid, and an organic resin filler other than a perfluororesin (hereinafter referred to as "organic resin filler A").
- This uncrosslinked fluororubber composition can be used as a rubber material for various rubber products. can be done.
- perfluororesin in the present application refers to a polymer in which all monovalent atoms bonded to carbon atoms constituting the main chain are fluorine atoms.
- Such perfluoro resins are, for example, polytetrafluoroethylene (PTFE), copolymers (FEP) of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP), and the like.
- PTFE polytetrafluoroethylene
- FEP copolymers
- TFE tetrafluoroethylene
- HFP hexafluoropropylene
- the main component of the rubber component is fluororubber, and although it contains an ionic liquid, it contains the organic resin filler A, and its reinforcing effect can provide sufficient mechanical properties of the crosslinked fluororubber composition.
- it since it contains the organic resin filler A, when it is used as a sealing rubber material for a sealing material used in semiconductor manufacturing equipment, even if the sealing material is exposed to a plasma atmosphere, dust generation is suppressed. can do.
- the content of the fluororubber in the rubber component is 50% by mass or more, preferably 80% by mass or more, more preferably 90% by mass or more, from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition. , and more preferably 100% by mass.
- the rubber component may contain nitrile rubber, silicone rubber, ethylene propylene rubber, etc., in addition to fluororubber.
- fluororubbers examples include copolymers of vinylidene fluoride (VDF) and hexafluoropropylene (HFP) (binary FKM), vinylidene fluoride (VDF), hexafluoropropylene (HFP) and tetrafluoroethylene ( TFE) copolymer (ternary FKM), tetrafluoroethylene (TFE) and propylene (Pr) copolymer (FEP), vinylidene fluoride (VDF) and propylene (Pr) and tetrafluoroethylene ( TFE), a copolymer of ethylene (E) and tetrafluoroethylene (TFE) (ETFE), a copolymer of ethylene (E) and tetrafluoroethylene (TFE) and perfluoromethyl vinyl ether (PMVE) Polymers, copolymers of vinylidene fluoride (VDF), tetrafluoroethylene (TFE) and perfluor
- the fluororubber preferably contains one or more of these, and from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition, vinylidene fluoride such as binary FKM or ternary FKM It is more preferable to contain a fluororubber, and when the uncrosslinked fluororubber composition is used as a rubber material for a sealing material of a sealing material used in semiconductor manufacturing equipment, even if the sealing material is exposed to a plasma atmosphere, From the viewpoint of being able to obtain excellent plasma resistance, it is more preferable to contain a ternary FKM.
- Ionic liquid in the present application means a salt composed of cations and anions and a liquid with a melting point of 100°C or less.
- Examples of cations in ionic liquids include imidazolium-based cations, pyridinium-based cations, pyrrolidinium-based cations, and ammonium-based cations.
- Examples of imidazolium cations include 1-ethyl-3-methylimidazolium cation, 1-methyl-3-methylimidazolium cation, 1-butyl-3-methylimidazolium cation, 1-hexyl-3-methylimidazolium cation, lithium cation, 1-octyl-3-methylimidazolium cation, 1-methyl-2,3-dimethylimidazolium cation, 1-butyl-2,3-dimethylimidazolium cation, 1-hexyl-2,3-dimethylimidazolium cation lithium cation, 1-octyl-2,3-dimethylimidazolium cation, and the like.
- Examples of pyridinium-based cations include 1-octyl-4-methyl-pyridinium cation, 1-methyl-pyridinium cation, 1-butyl-pyridinium cation, 1-hexyl-pyridinium cation and the like.
- Examples of pyrrolidinium cations include 1-ethyl-1-methylpyrrolidinium cations.
- Examples of ammonium-based cations include tributylmethylammonium cations.
- the cations of the ionic liquid preferably contain one or more of these.
- Examples of the anion of the ionic liquid include bisfluorosulfonylimide anions, fluorinated sulfonic acid anions, fluorinated carboxylic acid anions, thiocyanate anions, dicyanamide anions, and tetracyanoborate anions.
- Examples of bisfluorosulfonylimide anions include bisfluorosulfonylimide anions, bistrifluoromethanesulfonylimide anions, and bistrifluorobutanesulfonylimide anions.
- Examples of fluorinated sulfonate anions include tetrafluoroborate anions, hexafluoroborate anions, and trifluoromethanesulfonate anions.
- fluorinated carboxylic acid anions examples include trifluoroacetate anions.
- the anion of the ionic liquid preferably contains one or more of these, and from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition, a bisfluorosulfonylimide anion, a fluorinated sulfonic acid It is more preferable to include those having a fluorine atom such as a fluorinated carboxylic anion and a fluorinated carboxylic acid anion.
- the ionic liquid preferably contains a combination of one or more of these cations and one or more of these anions, from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition.
- the content P of the ionic liquid in the uncrosslinked fluororubber composition according to the embodiment is preferably 0.1 mass with respect to 100 parts by mass of the rubber component from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition. parts or more and 10 parts by mass or less, more preferably 0.2 parts by mass or more and 5 parts by mass or less, and still more preferably 0.5 parts by mass or more and 1.5 parts by mass or less.
- organic resin filler A examples include fluororesin fillers other than perfluororesins such as phenolic resin fillers; polyetheretherketone (PEEK) resin fillers; and polyvinylidene fluoride (PVDF) resin fillers.
- fluororesin fillers other than perfluororesins such as phenolic resin fillers; polyetheretherketone (PEEK) resin fillers; and polyvinylidene fluoride (PVDF) resin fillers.
- PEEK polyetheretherketone
- PVDF polyvinylidene fluoride
- the organic resin filler A preferably contains a phenolic resin filler from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition and promoting crosslinking of the uncrosslinked fluororubber composition. From the same point of view, this phenolic resin is preferably neither resol type nor novolac type. From the same point of view, the phenol resin preferably has a methylol group in the molecule.
- Organic resin filler A suppresses dust generation even when the uncrosslinked fluororubber composition is used as a rubber material for a sealing material of a sealing material used in semiconductor manufacturing equipment, even if the sealing material is exposed to a plasma atmosphere. From the viewpoint of being able to do so, it preferably contains a fluororesin filler other than a perfluororesin, and more preferably contains a PVDF resin filler.
- the average particle size of the organic resin filler A is preferably 0.5 ⁇ m or more and 20 ⁇ m or less, more preferably 1 ⁇ m or more and 10 ⁇ m or less, and still more preferably 1.2 ⁇ m or more. 2 ⁇ m or less.
- the content Q of the organic resin filler A in the uncrosslinked fluororubber composition according to the embodiment is, in the case of containing a filler other than the organic resin filler A, from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition. It is preferably from 0.5 to 30 parts by mass, more preferably from 1 to 20 parts by mass, and even more preferably from 1 to 10 parts by mass with respect to 100 parts by mass of the component. When no filler other than the organic resin filler A is contained, it is preferably 1 part by mass or more and 50 parts by mass or less, more preferably 2 parts by mass or more and 40 parts by mass or less, still more preferably 3 parts by mass, with respect to 100 parts by mass of the rubber component. It is more than 30 parts by mass and less than 30 parts by mass.
- the content of the fluororesin filler other than the perfluororesin in the uncrosslinked fluororubber composition according to the embodiment is When used as a rubber material for a sealing material of a sealing material used in a device, even if the sealing material is exposed to a plasma atmosphere, from the viewpoint of being able to suppress dust generation, with respect to 100 parts by mass of the rubber component , preferably 1 to 25 parts by mass, more preferably 2 to 10 parts by mass, still more preferably 3 to 7 parts by mass.
- the content Q of the organic resin filler A in the uncrosslinked fluororubber composition according to the embodiment, when containing a filler other than the organic resin filler A, is from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition. It is preferably equal to or greater than the liquid content P.
- the ratio (Q/P) of the content Q of the organic resin filler A to the content P of the ionic liquid in the uncrosslinked fluororubber composition (Q/P) is preferably 1 or more and 15 or less, more preferably 1 .5 or more and 10 or less.
- the content Q of the organic resin filler A is preferably larger than the content P of the ionic liquid from the same viewpoint.
- the ratio (Q/P) of the content Q of the organic resin filler A to the content P of the ionic liquid in the uncrosslinked fluororubber composition is preferably 5 or more and 40 or less, more preferably 10 from the same viewpoint. 30 or less.
- the uncrosslinked fluororubber composition according to the embodiment preferably further contains silica as a filler.
- silica include dry process silica such as fumed silica and wet process silica such as precipitated silica.
- the surface of silica may be hydrophobized with organochlorosilane, organoalkoxysilane, hexaorganodisilazane, organosiloxane oligomer, or the like.
- Silica preferably contains one or more of these.
- silica whose surface is hydrophobized with organochlorosilane, and whose surface is treated with dimethyldichlorosilane. More preferably, it contains hydrophobized fumed silica.
- the non-crosslinked fluororubber composition according to the embodiment contains silica as a filler
- the mechanical properties of the crosslinked fluororubber composition can be effectively improved even if the silica content is small.
- silica does not generate dust even when the sealing material is exposed to a plasma atmosphere.
- silica may inhibit cross-linking of an uncross-linked fluororubber composition when used in combination with an ionic liquid.
- a phenolic resin filler is used as the organic resin filler A, as described above, it is possible to promote the cross-linking of the uncrosslinked fluororubber composition, so that inhibition of cross-linking can be suppressed. For this reason, when the uncrosslinked fluororubber composition contains silica as a filler, it is preferable to also contain a phenolic resin filler as the organic resin filler A.
- the uncrosslinked fluororubber composition when the organic resin filler A contains a fluororesin filler other than a perfluororesin, sufficiently high mechanical properties of the crosslinked fluororubber composition can be obtained. It is preferably not contained. However, even in this case, the uncrosslinked fluororubber composition may contain silica.
- the content R of silica in the uncrosslinked fluororubber composition according to the embodiment is preferably 1 part by mass or more and 20 parts by mass with respect to 100 parts by mass of the rubber component. It is not more than 5 parts by mass, more preferably 5 parts by mass or more and 15 parts by mass or less.
- the content R of silica in the uncrosslinked fluororubber composition according to the embodiment is preferably larger than the content P of the ionic liquid.
- the ratio (R/P) of the content R of silica to the content P of the ionic liquid in the uncrosslinked fluororubber composition is preferably 3 or more and 20 or less, more preferably 5 or more and 15 or less.
- the content R of silica in the uncrosslinked fluororubber composition according to the embodiment is preferably equal to or greater than the content Q of the organic resin filler A.
- the ratio (R/Q) of the content R of silica to the content Q of the organic resin filler A in the uncrosslinked fluororubber composition is preferably 1 or more and 15 or less, more preferably 1 or more and 3 or less. be.
- the uncrosslinked fluororubber composition according to the embodiment may further contain a crosslinking agent.
- cross-linking agents include organic peroxides, polyols, polyamines and triazines. From the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition, the crosslinking agent preferably contains an organic peroxide among these.
- organic peroxides examples include dicumyl peroxide, 1,3-di(t-butylperoxy)diisopropylbenzene, 1,4-di(t-butylperoxy)diisopropylbenzene, t-butylcumylperoxide.
- the organic peroxide preferably contains one or more of these, and from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition, 2,5-dimethyl-2,5-di( It is even more preferred to contain t-butylperoxy)hexane.
- the content X of the organic peroxide of the crosslinking agent in the uncrosslinked fluororubber composition according to the embodiment is preferably is 0.5 to 5 parts by mass, more preferably 0.5 to 4 parts by mass, and still more preferably 1 to 2 parts by mass.
- the uncrosslinked fluororubber composition according to the embodiment may further contain a crosslinking aid.
- cross-linking aids include allyl-based cross-linking aids such as triallyl isocyanurate, diallyl fumarate, diallyl phthalate, tetraallyloxyethane, and trimethallyl isocyanurate; N,N'-m-phenylenebismaleimide, maleimide, maleimide-based cross-linking agents such as phenylmaleimide; methacrylate-based cross-linking agents such as trimethylolpropane trimethacrylate, ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, and polyethylene glycol dimethacrylate; 1,2-polybutadiene etc.
- the cross-linking aid preferably contains one or more of these, and more preferably contains an allyl-based cross-linking aid from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition. More preferably, it contains allyl isocyanurate.
- the content Y of the crosslinking aid in the uncrosslinked fluororubber composition according to the embodiment is preferably 1 part by mass with respect to 100 parts by mass of the rubber component from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition. 10 parts by mass or less, more preferably 2 parts by mass or more and 8 parts by mass or less, still more preferably 2 parts by mass or more and 6 parts by mass or less.
- the content Y of the crosslinking aid in the uncrosslinked fluororubber composition according to the embodiment is preferably larger than the content X of the organic peroxide from the viewpoint of obtaining sufficient mechanical properties of the crosslinked fluororubber composition.
- the ratio (Y/X) of the content Y of the crosslinking aid to the content X of the organic peroxide in the uncrosslinked fluororubber composition is preferably 1 or more and 10 or less, more preferably 1.5. 4 or less.
- the uncrosslinked fluororubber composition according to the embodiment may contain other rubber compounding agents as necessary.
- the uncrosslinked fluororubber composition when used as a rubber material for a sealing material of a sealing material used in semiconductor manufacturing equipment, from the viewpoint of preventing dust generation when the sealing material is exposed to a plasma atmosphere, the uncrosslinked fluororubber composition contains carbon black. , conductive carbon, and metal oxides.
- the uncrosslinked fluororubber composition according to the embodiment is prepared by masticating a rubber component containing fluororubber as a main component in a rubber kneader such as an open roll mixer or a Banbury mixer, and then adding an ionic liquid and an organic resin filler A thereto. It can be obtained by adding and kneading various rubber compounding agents including.
- non-crosslinked fluororubber composition according to the embodiment having the above configuration to crosslink the rubber component, it is possible to manufacture, for example, a sealing material used in semiconductor manufacturing equipment.
- the hardness Hs of the crosslinked fluororubber composition forming it is preferably A50 or more and A95 or less. This hardness Hs is measured using a type A durometer based on JIS K6253-3:2012 as an instantaneous value when the pressure plate is brought into contact with the test piece.
- the tensile strength Tb of the crosslinked fluororubber composition forming the sealing material is preferably 10 MPa or more.
- the elongation Eb is preferably 100% or more.
- the tensile stress S100 at 100% elongation is preferably 1 MPa or more and 10 MPa or less.
- the compression set of the crosslinked fluororubber composition forming the sealing material is preferably 40% or less, more preferably 35% or less, and even more preferably 30% or less. This compression set is measured based on JIS K6262:2013 at a test temperature of 200° C. and a test time of 72 hours, using a sample of an AS-214 O-ring cut in half.
- the volume resistivity of the crosslinked fluororubber composition forming the sealing material is preferably 1.0 ⁇ 10 13 ⁇ cm or less, more preferably 1.0 ⁇ 10 12 ⁇ cm or less. This volume resistivity is measured by the double ring electrode method with an applied voltage of 500 V based on JISK6271-1:2015.
- the mass reduction rate (plasma resistance) of the crosslinked fluororubber composition forming the sealing material due to plasma irradiation is preferably 3% or less, more preferably 2.5% or less.
- This mass reduction rate is generated using a mixed gas in which the crosslinked fluororubber composition is a mixture of O2 gas and CF4 gas at a volume ratio of 50: 1 under the conditions of a frequency of 2.45 GHz, a pressure of 100 Pa, and an output of 1500 W. It is calculated based on the following formula from the masses before and after exposure to plasma for 30 minutes.
- Mass reduction rate (%) ⁇ (mass before exposure - mass after exposure) / mass before exposure ⁇ x 100
- a predetermined amount of the uncrosslinked fluororubber composition according to the embodiment is taken, and after filling it into a sealing material-shaped cavity formed in a mold, the mold is clamped to remove the uncrosslinked fluororubber composition, It is formed in the shape of the sealing material.
- the mold is sandwiched between hot platens, and the uncrosslinked fluororubber composition formed into a sealing material shape is applied at a predetermined temperature (for example, 160° C. to 170° C.) and a predetermined pressure (for example, 10 MPa to 20 MPa) for a predetermined time (for example, A primary cross-linked product is obtained by performing press molding with heating and pressure for 5 to 30 minutes to primary cross-link the rubber component (primary cross-linking step).
- a predetermined temperature for example, 160° C. to 170° C.
- a predetermined pressure for example, 10 MPa to 20 MPa
- a primary cross-linked product is obtained by performing press molding with heating and pressure for 5 to 30 minutes to primary cross-link the rubber component (primary cross-linking step).
- the primary crosslinked product is removed from the mold, it is placed in an oven, and the primary crosslinked product is heated at a higher temperature (eg, 190° C. to 210° C.) for a long time (eg, 3 to 5 hours) than the primary crosslinked step.
- Annealing is performed to secondary cross-link the rubber component to obtain a secondary cross-linked product (secondary cross-linking step).
- the manufacturing method of the sealing material may be composed of a primary cross-linking step and a secondary cross-linking step, and the secondary cross-linked product may be used as the sealing material as it is.
- the production method of the sealing material includes, in addition to the primary crosslinking step and the secondary crosslinking step, irradiation of radiation to crosslink the rubber component. It may further comprise a cross-linking step.
- the radiation crosslinking step from the same viewpoint, it is preferable to irradiate the secondary crosslinked product with radiation, that is, to carry out the radiation crosslinking step after the secondary crosslinking step.
- Examples of radiation include ⁇ -rays, ⁇ -rays, ⁇ -rays, electron beams, and ions.
- the radiation is preferably an electron beam or a ⁇ ray among these.
- the irradiation dose of radiation is, for example, 10 kGy or more and 100 kGy or less.
- Example 1 Ternary FKM (Technoflon P959, manufactured by Solvay Specialty Polymers Japan) is used as a rubber component, and 100 parts by mass of this rubber component is added to ionic liquid 1-butyl-3-methylimidazolium bistrifluoromethanesulfonylimide (BMIN111 Mitsubishi Materials Electronic Chemicals Co., Ltd.) 1 part by mass, 1 part by mass of phenolic resin filler (Bellpearl R100 Air Water Bellpearl, average particle size 1.5 ⁇ m), fumed silica hydrophobized with dimethyldichlorosilane (Aerosil R976S Nippon Aerosil Co., Ltd.) 10 parts by mass, organic peroxide 2,5-dimethyl-2,5-di(t-butylperoxy)hexane (perhexa 25B NOF Corporation) 1.5 parts by mass, and a cross-linking aid Example 1 was an uncrosslinked fluororubber composition prepared by blending and
- Example 2 An uncrosslinked fluororubber composition of Example 2 was prepared in the same manner as in Example 1, except that the amount of the phenolic resin filler was 5 parts by mass per 100 parts by mass of the rubber component.
- Example 3 An uncrosslinked fluororubber composition prepared in the same manner as in Example 2, except that 1-ethyl-1-methylpyrrolidinium bistrifluoromethanesulfonylimide (P12N111, manufactured by Mitsubishi Materials Electronic Chemicals Co., Ltd.) was used as the ionic liquid. The product was designated as Example 3.
- 1-ethyl-1-methylpyrrolidinium bistrifluoromethanesulfonylimide P12N111, manufactured by Mitsubishi Materials Electronic Chemicals Co., Ltd.
- Example 4 was an uncrosslinked fluororubber composition prepared in the same manner as in Example 2 except that tributylmethylammonium bistrifluoromethanesulfonylimide (FC-4400 manufactured by 3M) was used as the ionic liquid.
- FC-4400 tributylmethylammonium bistrifluoromethanesulfonylimide
- Example 5 was an uncrosslinked fluororubber composition prepared in the same manner as in Example 2, except that non-hydrophobicized hydrophilic fumed silica (Aerosil 200, manufactured by Nippon Aerosil Co., Ltd.) was used.
- Example 6 An uncrosslinked fluororubber composition prepared in the same manner as in Example 1, except that fumed silica was not blended and the amount of the phenolic resin filler was 25 parts by mass with respect to 100 parts by mass of the rubber component. It was set as Example 6.
- Example 7 Example 1 except that 25 parts by mass of PVDF resin filler (Kynar MG15, manufactured by Arkema, average particle size 10 ⁇ m) was blended with respect to 100 parts by mass of the rubber component without blending phenolic resin filler and fumed silica.
- Example 7 was an uncrosslinked fluororubber composition prepared in the same manner as above.
- Example 8 Example except that 25 parts by mass of PEEK resin filler (Vestakeep 2000UFP10, manufactured by Daicel-Evonik, average particle size 10 ⁇ m) was blended with respect to 100 parts by mass of the rubber component without blending phenolic resin filler and fumed silica.
- Example 8 was an uncrosslinked fluororubber composition prepared in the same manner as in Example 1.
- Example 9 An uncrosslinked fluororubber composition prepared in the same manner as in Example 1 except that fumed silica was not blended and the blending amount of the phenolic resin filler was 5 parts by mass with respect to 100 parts by mass of the rubber component. It was set as Example 9.
- Example 10 An uncrosslinked fluororubber composition of Example 10 was prepared in the same manner as in Example 9 except that 5 parts by mass of PVDF resin filler was blended with respect to 100 parts by mass of the rubber component without blending the phenolic resin filler.
- Example 11 An uncrosslinked fluororubber composition of Example 11 was prepared in the same manner as in Example 9, except that 5 parts by mass of PEEK resin filler was blended with respect to 100 parts by mass of the rubber component without blending the phenolic resin filler.
- Comparative Example 1 was an uncrosslinked fluororubber composition prepared in the same manner as in Example 1, except that the phenolic resin filler and fumed silica were not blended.
- Comparative Example 1 was an uncrosslinked fluororubber composition prepared in the same manner as in Example 1, except that the ionic liquid and phenolic resin filler were not blended.
- Comparative Example 3 Except that 25 parts by mass of PTFE resin filler (Lubron L-5, manufactured by Daikin, average particle size 5 to 7 ⁇ m) was blended with respect to 100 parts by mass of the rubber component without blending phenolic resin filler and fumed silica. Comparative Example 3 was an uncrosslinked fluororubber composition prepared in the same manner as in Example 1.
- PTFE resin filler Libron L-5, manufactured by Daikin, average particle size 5 to 7 ⁇ m
- Comparative Example 4 Non-prepared in the same manner as in Example 1 except that 25 parts by mass of carbon black (Thermax N990 manufactured by Cancarb) was blended with respect to 100 parts by mass of the rubber component without blending the phenolic resin filler and fumed silica. Comparative Example 4 is a crosslinked fluororubber composition.
- Example 2 the same uncrosslinked fluororubber composition as in Example 1 except that the phenol resin filler was not blended, and the ionic liquid was blended in an amount of 0 with respect to 100 parts by mass of the rubber component.
- An uncrosslinked fluororubber composition was also prepared in the same manner as in Example 1 except that the amount was 1 part by mass, but no crosslinked product was obtained from these.
- test piece of the crosslinked fluororubber composition obtained by crosslinking the above uncrosslinked fluororubber composition was prepared, and the following tests were carried out using it. Table 1 shows the results.
- a sheet-like crosslinked fluororubber composition test piece having a thickness of 6 mm was prepared from each of the uncrosslinked fluororubber compositions of Examples 1 to 11 and Comparative Examples 1 to 5, and was measured according to JIS K6253-3: 2012. , type A durometer, the hardness Hs was measured as an instantaneous value when the pressure plate was brought into contact with the test piece.
- a dumbbell-shaped No. 3 test piece of the crosslinked fluororubber composition was prepared from each of the uncrosslinked fluororubber compositions of Examples 1 to 11 and Comparative Examples 1 to 5, and the tensile strength was measured based on JIS K6251: 2017. Tb, elongation Eb, and tensile stress S100 at 100% elongation were measured.
- a test piece (100 ⁇ 100 ⁇ t2 mm sheet) of the crosslinked fluororubber composition was prepared from each of the uncrosslinked fluororubber compositions of Examples 1 to 11 and Comparative Examples 1 to 5, and was measured according to JIS K6271-1: 2015. , the volume resistivity was measured by the double ring electrode method with an applied voltage of 500V.
- Example 10 in which 5 parts by mass of the PVDF resin filler was blended with 100 parts by mass of the three-dimensional FKM of the rubber component, had the smallest mass reduction rate and the plasma resistance. It showed excellent results.
- the present invention is useful in the technical field of an uncrosslinked fluororubber composition, a sealing material produced using the same, and a production method thereof.
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Abstract
Description
質量減少率(%)={(曝露前質量-曝露後質量)/曝露前質量}×100
以下の実施例1乃至11及び比較例1乃至5の未架橋フッ素ゴム組成物を調製した。それぞれの構成は表1にも示す。
三元系FKM(テクノフロンP959 ソルベイスペシャルティポリマーズジャパン社製)をゴム成分とし、このゴム成分100質量部に対して、イオン液体の1-ブチル-3-メチルイミダゾリウム・ビストリフルオロメタンスルホニルイミド(BMIN111 三菱マテリアル電子化成社製)1質量部、フェノール樹脂フィラー(ベルパールR100 エア・ウォーター・ベルパール社製 平均粒子径1.5μm)1質量部、ジメチルジクロロシランで疎水化処理されたヒュームドシリカ(アエロジルR976S 日本アエロジル社製)10質量部、有機過酸化物の2,5-ジメチル-2,5-ジ(t-ブチルパーオキシ)ヘキサン(パーヘキサ25B 日油社製)1.5質量部、及び架橋助剤のトリアリルイソシアヌレート(TAIC 三菱ケミカル社製)4質量部を配合して混練した未架橋フッ素ゴム組成物を実施例1とした。
フェノール樹脂フィラーの配合量を、ゴム成分100質量部に対して5質量部としたことを除いて実施例1と同様にして調製した未架橋フッ素ゴム組成物を実施例2とした。
イオン液体として、1-エチル-1-メチルピロリジニウム・ビストリフルオロメタンスルホニルイミド(P12N111 三菱マテリアル電子化成社製)を用いたことを除いて実施例2と同様にして調製した未架橋フッ素ゴム組成物を実施例3とした。
イオン液体として、トリブチルメチルアンモニウム・ビストリフルオロメタンスルホニルイミド(FC-4400 3M社製)を用いたことを除いて実施例2と同様にして調製した未架橋フッ素ゴム組成物を実施例4とした。
疎水化処理されていない親水性のヒュームドシリカ(アエロジル200 日本アエロジル社製)を用いたことを除いて実施例2と同様にして調製した未架橋フッ素ゴム組成物を実施例5とした。
ヒュームドシリカを配合せずに、フェノール樹脂フィラーの配合量を、ゴム成分100質量部に対して25質量部としたことを除いて実施例1と同様にして調製した未架橋フッ素ゴム組成物を実施例6とした。
フェノール樹脂フィラー及びヒュームドシリカを配合せずに、PVDF樹脂フィラー(カイナーMG15 アルケマ社製、平均粒子径10μm)を、ゴム成分100質量部に対して25質量部配合したことを除いて実施例1と同様にして調製した未架橋フッ素ゴム組成物を実施例7とした。
フェノール樹脂フィラー及びヒュームドシリカを配合せずに、PEEK樹脂フィラー(ベスタキープ2000UFP10 ダイセルエボニック社製、平均粒子径10μm)を、ゴム成分100質量部に対して25質量部配合したことを除いて実施例1と同様にして調製した未架橋フッ素ゴム組成物を実施例8とした。
ヒュームドシリカを配合せずに、フェノール樹脂フィラーの配合量を、ゴム成分100質量部に対して5質量部としたことを除いて実施例1と同様にして調製した未架橋フッ素ゴム組成物を実施例9とした。
フェノール樹脂フィラーを配合せずに、PVDF樹脂フィラーを、ゴム成分100質量部に対して5質量部配合したことを除いて実施例9と同様にして調整した未架橋フッ素ゴム組成物を実施例10とした。
フェノール樹脂フィラーを配合せずに、PEEK樹脂フィラーを、ゴム成分100質量部に対して5質量部配合したことを除いて実施例9と同様にして調整した未架橋フッ素ゴム組成物を実施例11とした。
フェノール樹脂フィラー及びヒュームドシリカを配合していないことを除いて実施例1と同様にして調製した未架橋フッ素ゴム組成物を比較例1とした。
イオン液体及びフェノール樹脂フィラーを配合していないことを除いて実施例1と同様にして調製した未架橋フッ素ゴム組成物を比較例1とした。
フェノール樹脂フィラー及びヒュームドシリカを配合せずに、PTFE樹脂フィラー(ルブロンL-5 ダイキン社製 平均粒子径5乃至7μm)を、ゴム成分100質量部に対して25質量部配合したことを除いて実施例1と同様にして調製した未架橋フッ素ゴム組成物を比較例3とした。
フェノール樹脂フィラー及びヒュームドシリカを配合せずに、カーボンブラック(ThermaxN990 Cancarb社製)を、ゴム成分100質量部に対して25質量部配合したことを除いて実施例1と同様にして調製した未架橋フッ素ゴム組成物を比較例4とした。
フェノール樹脂フィラーを配合せずに、PTFE樹脂フィラーを、ゴム成分100質量部に対して5質量部配合したことを除いて実施例9と同様にして調整した未架橋フッ素ゴム組成物を比較例5とした。
上記未架橋フッ素ゴム組成物を架橋させた架橋フッ素ゴム組成物の試験片を作製し、それを用いて以下の試験を実施した。その結果を表1に示す。
実施例1乃至11及び比較例1乃至5のそれぞれの未架橋フッ素ゴム組成物から、厚さ6mmのシート状の架橋フッ素ゴム組成物の試験片を作製し、JIS K6253-3:2012に基づいて、タイプAデュロメータを用い、加圧板を試験片に接触させた瞬間値として硬さHsを測定した。
実施例1乃至11及び比較例1乃至5のそれぞれの未架橋フッ素ゴム組成物から架橋フッ素ゴム組成物のダンベル状3号形の試験片を作製し、JIS K6251:2017に基づいて、引張強さTb、伸びEb、及び100%伸びにおける引張応力S100を測定した。
実施例1乃至11及び比較例1乃至5のそれぞれの未架橋フッ素ゴム組成物から架橋フッ素ゴム組成物で形成されたAS-214 Oリングを作製するとともに、それを半分に切ったものを試料とし、JIS K6262:2013に基づいて、試験温度を200℃及び試験時間を72時間として圧縮永久ひずみCSを測定した。
実施例1乃至11及び比較例1乃至5のそれぞれの未架橋フッ素ゴム組成物から架橋フッ素ゴム組成物の試験片(100×100×t2mmシート)を作製し、JIS K6271-1:2015に基づいて、印加電圧を500Vとして二重リング電極法により体積抵抗率を測定した。
実施例1乃至11及び比較例1乃至5のそれぞれの未架橋フッ素ゴム組成物から架橋フッ素ゴム組成物で形成されたAS-214 Oリングを作製して試料とし、それを、プラズマ暴露装置(神港精機社製)にセットするとともに、O2ガス及びCF4ガスを50:1の体積比で混合した混合ガスを用い、周波数2.45GHz、圧力100Pa、及び出力1500Wの条件で発生させたプラズマに30分間曝露した。そして、そのときの発塵の有無を目視で確認した。また、その前後の質量から下記式に基づいて質量減少率を算出した。
質量減少率(%)={(曝露前質量-曝露後質量)/曝露前質量}×100
Claims (16)
- フッ素ゴムを主成分とするゴム成分と、イオン液体と、パーフルオロ樹脂以外の有機樹脂フィラーと、を含有する未架橋フッ素ゴム組成物。
- 請求項1に記載された未架橋フッ素ゴム組成物において、
前記フッ素ゴムがフッ化ビニリデン系フッ素ゴムを含む未架橋フッ素ゴム組成物。 - 請求項2に記載された未架橋フッ素ゴム組成物において、
前記フッ素ゴムがビニリデンフルオライドとヘキサフルオロプロピレンとテトラフルオロエチレンとの共重合体を含む未架橋フッ素ゴム組成物。 - 請求項1乃至3のいずれかに記載された未架橋フッ素ゴム組成物において、
前記イオン液体の陰イオンがフッ素原子を有する未架橋フッ素ゴム組成物。 - 請求項1乃至4のいずれかに記載された未架橋フッ素ゴム組成物において、
前記イオン液体の陽イオンが、イミダゾリウム系カチオン、ピリジニウム系カチオン、ピロリジニウム系カチオン、アンモニウム系カチオンのうちの1種又は2種以上を含む未架橋フッ素ゴム組成物。 - 請求項1乃至5のいずれかに記載された未架橋フッ素ゴム組成物において、
前記有機樹脂フィラーがフェノール樹脂フィラーを含む未架橋フッ素ゴム組成物。 - 請求項6のいずれかに記載された未架橋フッ素ゴム組成物において、
シリカを更に含有する未架橋フッ素ゴム組成物。 - 請求項1乃至5のいずれかに記載された未架橋フッ素ゴム組成物において、
前記有機樹脂フィラーがパーフルオロ樹脂以外のフッ素樹脂フィラーを含む未架橋フッ素ゴム組成物。 - 請求項8に記載された未架橋フッ素ゴム組成物において、
シリカを含有しない未架橋フッ素ゴム組成物。 - 請求項1乃至9のいずれかに記載された未架橋フッ素ゴム組成物において、
架橋剤の有機過酸化物を更に含有する未架橋フッ素ゴム組成物。 - 請求項10に記載された未架橋フッ素ゴム組成物において、
架橋助剤を更に含有する未架橋フッ素ゴム組成物。 - 請求項1乃至11のいずれかに記載された未架橋フッ素ゴム組成物の前記ゴム成分を架橋させた架橋フッ素ゴム組成物で形成されたシール材。
- 請求項12に記載されたシール材において、
前記架橋フッ素ゴム組成物の圧縮永久ひずみが40%以下であるシール材。 - 請求項12又は13に記載されたシール材において、
前記架橋フッ素ゴム組成物は、前記架橋フッ素ゴム組成物を、O2ガス及びCF4ガスを50:1の体積比で混合した混合ガスを用い、周波数2.45GHz、圧力100Pa、及び出力1500Wの条件で発生させたプラズマに30分間曝露したとき、その前後の質量から算出される質量減少率が3%以下であるシール材。 - 請求項12乃至14のいずれかに記載されたシール材において、
半導体製造装置に使用されるシール材。 - 請求項1乃至11のいずれかに記載された未架橋フッ素ゴム組成物をシール材形状に形成して前記ゴム成分を架橋させるシール材の製造方法。
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