JPWO2011002080A1 - 架橋性フッ素ゴム組成物、フッ素ゴム成形品及びその製法 - Google Patents
架橋性フッ素ゴム組成物、フッ素ゴム成形品及びその製法 Download PDFInfo
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- JPWO2011002080A1 JPWO2011002080A1 JP2011520993A JP2011520993A JPWO2011002080A1 JP WO2011002080 A1 JPWO2011002080 A1 JP WO2011002080A1 JP 2011520993 A JP2011520993 A JP 2011520993A JP 2011520993 A JP2011520993 A JP 2011520993A JP WO2011002080 A1 JPWO2011002080 A1 JP WO2011002080A1
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- Prior art keywords
- fluororubber
- copolymer
- crosslinking
- fluororesin
- crosslinkable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000000203 mixture Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title description 48
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- 238000004132 cross linking Methods 0.000 claims description 121
- 229920001577 copolymer Polymers 0.000 claims description 95
- 239000000178 monomer Substances 0.000 claims description 69
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 claims description 68
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 66
- -1 perfluoro Chemical group 0.000 claims description 54
- 238000010438 heat treatment Methods 0.000 claims description 36
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 33
- 238000000465 moulding Methods 0.000 claims description 26
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 claims description 21
- 239000003566 sealing material Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000002844 melting Methods 0.000 claims description 16
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- 150000001875 compounds Chemical class 0.000 description 44
- 229910052731 fluorine Inorganic materials 0.000 description 42
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- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 6
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- 239000002253 acid Substances 0.000 description 4
- USFRYJRPHFMVBZ-UHFFFAOYSA-M benzyl(triphenyl)phosphanium;chloride Chemical compound [Cl-].C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(C=1C=CC=CC=1)CC1=CC=CC=C1 USFRYJRPHFMVBZ-UHFFFAOYSA-M 0.000 description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
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- 230000001112 coagulating effect Effects 0.000 description 4
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- 125000000524 functional group Chemical group 0.000 description 4
- 229910052740 iodine Inorganic materials 0.000 description 4
- 150000001451 organic peroxides Chemical class 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 150000001491 aromatic compounds Chemical class 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- ZFVMWEVVKGLCIJ-UHFFFAOYSA-N bisphenol AF Chemical compound C1=CC(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C=C1 ZFVMWEVVKGLCIJ-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
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- 239000007789 gas Substances 0.000 description 3
- 150000002366 halogen compounds Chemical class 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 3
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- 238000010422 painting Methods 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
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- NSGXIBWMJZWTPY-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropane Chemical compound FC(F)(F)CC(F)(F)F NSGXIBWMJZWTPY-UHFFFAOYSA-N 0.000 description 2
- 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
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- 238000009792 diffusion process Methods 0.000 description 1
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- 125000005067 haloformyl group Chemical group 0.000 description 1
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- 239000004312 hexamethylene tetramine Substances 0.000 description 1
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- 159000000003 magnesium salts Chemical class 0.000 description 1
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- WRIRWRKPLXCTFD-UHFFFAOYSA-N malonamide Chemical compound NC(=O)CC(N)=O WRIRWRKPLXCTFD-UHFFFAOYSA-N 0.000 description 1
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- FZZQNEVOYIYFPF-UHFFFAOYSA-N naphthalene-1,6-diol Chemical compound OC1=CC=CC2=CC(O)=CC=C21 FZZQNEVOYIYFPF-UHFFFAOYSA-N 0.000 description 1
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- DFQICHCWIIJABH-UHFFFAOYSA-N naphthalene-2,7-diol Chemical compound C1=CC(O)=CC2=CC(O)=CC=C21 DFQICHCWIIJABH-UHFFFAOYSA-N 0.000 description 1
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- CRHIAMBJMSSNNM-UHFFFAOYSA-N tetraphenylstannane Chemical compound C1=CC=CC=C1[Sn](C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 CRHIAMBJMSSNNM-UHFFFAOYSA-N 0.000 description 1
- XLAIWHIOIFKLEO-OWOJBTEDSA-N trans-stilbene-4,4'-diol Chemical compound C1=CC(O)=CC=C1\C=C\C1=CC=C(O)C=C1 XLAIWHIOIFKLEO-OWOJBTEDSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- KSMYREBPTSSZDR-UHFFFAOYSA-M tributyl(prop-2-enyl)phosphanium;chloride Chemical compound [Cl-].CCCC[P+](CCCC)(CCCC)CC=C KSMYREBPTSSZDR-UHFFFAOYSA-M 0.000 description 1
- 238000005829 trimerization reaction Methods 0.000 description 1
- SBXWFLISHPUINY-UHFFFAOYSA-N triphenyltin Chemical compound C1=CC=CC=C1[Sn](C=1C=CC=CC=1)C1=CC=CC=C1 SBXWFLISHPUINY-UHFFFAOYSA-N 0.000 description 1
- GRPURDFRFHUDSP-UHFFFAOYSA-N tris(prop-2-enyl) benzene-1,2,4-tricarboxylate Chemical compound C=CCOC(=O)C1=CC=C(C(=O)OCC=C)C(C(=O)OCC=C)=C1 GRPURDFRFHUDSP-UHFFFAOYSA-N 0.000 description 1
- XHGIFBQQEGRTPB-UHFFFAOYSA-N tris(prop-2-enyl) phosphate Chemical compound C=CCOP(=O)(OCC=C)OCC=C XHGIFBQQEGRTPB-UHFFFAOYSA-N 0.000 description 1
- SANRKQGLYCLAFE-UHFFFAOYSA-H uranium hexafluoride Chemical compound F[U](F)(F)(F)(F)F SANRKQGLYCLAFE-UHFFFAOYSA-H 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
-
- 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
- C08L27/02—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
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
- C08J3/21—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase the polymer being premixed with a liquid phase
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two polymers
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Fixing For Electrophotography (AREA)
- Sealing Material Composition (AREA)
- Laminated Bodies (AREA)
Abstract
Description
(I)フッ素ゴム(A)とフッ素樹脂(B)とを共凝析して上記架橋性フッ素ゴム組成物を得る工程、
(II)架橋性フッ素ゴム組成物を成形し、架橋して、架橋成形品を得る成形架橋工程、及び、
(III)架橋成形品をフッ素樹脂(B)の融点以上の温度に加熱してフッ素ゴム成形品を得る熱処理工程
を含むフッ素ゴム成形品の製造方法にも関する。
上記共凝析の方法としては、特に各樹脂が均一に分散し易い点で、上記(i)の方法が好ましい。特に、フッ素ゴム(A)及びフッ素樹脂(B)は、フッ素ゴム(A)の水性分散液と、フッ素樹脂(B)の水性分散液とを混合した後に凝析し、次いで凝析物を回収し、所望により乾燥させることにより得られたものであることが好ましい。
上記フッ素ゴム(A)は、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ものである。上記フッ素ゴム(A)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。
CF2=CFO(CF2CFY1O)p−(CF2CF2CF2O)q−Rf (1)
(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。)、及び、一般式(2)
CFX=CXOCF2OR1 (2)
(式中、XはH、F又はCF3を表し、R1は、直鎖又は分岐したC1〜C6フルオロアルキル基、若しくは、C5〜C6環状フルオロアルキル基を表す。)
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い。
(式中、Y2は水素原子またはフッ素原子、nは1〜8の整数である)
CF2=CFCF2Rf 1−CN (4)
(式中、Rf 1は、−(OCF2)n−、又は、−(OCF(CF3))n−であり、nは0〜5の整数である)
CF2=CFCF2(OCF(CF3)CF2)m(OCH2CF2CF2)nOCH2CF2−CN (5)
(式中、mは0〜5の整数、nは0〜5の整数である)
CF2=CFCF2(OCH2CF2CF2)m(OCF(CF3)CF2)nOCF(CF3)−CN (6)
(式中、mは0〜5の整数、nは0〜5の整数である)
CF2=CF(OCF2CF(CF3))mO(CF2)n−CN (7)
(式中、mは0〜5の整数、nは1〜8の整数である)
CF2=CF(OCF2CF(CF3))m−CN (8)
(式中、mは1〜5の整数である)
CF2=CFOCF2(CF(CF3)OCF2)nCF(−CN)CF3 (9)
(式中、nは1〜4の整数である)
CF2=CFO(CF2)nOCF(CF3)−CN (10)
(式中、nは2〜5の整数である)
CF2=CFO(CF2)n−(C6H4)−CN (11)
(式中、nは1〜6の整数である)
CF2=CF(OCF2CF(CF3))nOCF2CF(CF3)−CN (12)
(式中、nは1〜2の整数である)
CH2=CFCF2O(CF(CF3)CF2O)nCF(CF3)−CN (13)
(式中、nは0〜5の整数である)、
CF2=CFO(CF2CF(CF3)O)m(CF2)n−CN (14)
(式中、mは0〜5の整数、nは1〜3の整数である)
CH2=CFCF2OCF(CF3)OCF(CF3)−CN (15)
CH2=CFCF2OCH2CF2−CN (16)
CF2=CFO(CF2CF(CF3)O)mCF2CF(CF3)−CN (17)
(式中、mは0以上の整数である)
CF2=CFOCF(CF3)CF2O(CF2)n−CN (18)
(式中、nは1以上の整数である)
CF2=CFOCF2OCF2CF(CF3)OCF2−CN (19)
CF2=CFOCF(CF3)CF2OCF2CF2−CN (20)
R2IxBry
(式中、xおよび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の飽和もしくは不飽和のフルオロ炭化水素基またはクロロフルオロ炭化水素基、または炭素数1〜3の炭化水素基であり、酸素原子を含んでいてもよい)で表される化合物があげられる。
フッ素樹脂(B)としては、少なくとも1種の含フッ素エチレン性単量体由来の構造単位を有する含フッ素エチレン性重合体であることが好ましく、溶融加工可能なフッ素樹脂であることが好ましい。上記含フッ素エチレン性単量体としては、テトラフルオロエチレン〔TFE〕、式(21):
CF2=CF−Rf 3 (21)
(式中、Rf 3は、−CF3または−ORf 4を表す。Rf 4は、炭素原子数1〜5のパーフルオロアルキル基を表す。)
で表されるパーフルオロエチレン性不飽和化合物などの1種または2種以上のパーフルオロオレフィン;クロロトリフルオロエチレン〔CTFE〕、トリフルオロエチレン、ヘキサフルオロイソブテン、フッ化ビニリデン〔VdF〕、フッ化ビニル、式(22):
CH2=CX2(CF2)nX3 (22)
(式中、X2は、水素原子またはフッ素原子を表し、X3は、水素原子、フッ素原子または塩素原子を表し、nは、1〜10の整数を表す。)
で表されるフルオロオレフィンなどをあげることができる。
(1)エチレン/TFE共重合体〔ETFE〕
(2)TFEと式(21):
CF2=CF−Rf 3 (21)
(式中、Rf 3は、−CF3または−ORf 4を表す。Rf 4は、炭素原子数1〜5のパーフルオロアルキル基を表す。)
で表されるパーフルオロエチレン性不飽和化合物の1種または2種以上からなる共重合体、たとえばTFE/パーフルオロ(アルキルビニルエーテル)〔PAVE〕共重合体〔PFA〕またはTFE/ヘキサフルオロプロピレン〔HFP〕共重合体〔FEP〕
(3)TFEとVdFと式(21):
CF2=CF−Rf 3 (21)
(式中、Rf 3は、−CF3または−ORf 4を表す。Rf 4は、炭素原子数1〜5のパーフルオロアルキル基を表す。)
で表されるパーフルオロエチレン性不飽和化合物の1種または2種以上からなる共重合体、たとえばTFE/VdF/HFP共重合体
(4)ポリフッ化ビニリデン〔PVdF〕
(5)CTFE/TFE共重合体
ETFEは、フッ素ゴム成形品の力学物性や燃料バリア性が向上する点で好ましい。TFE単位とエチレン単位との含有モル比は20:80〜90:10が好ましく、37:63〜85:15がより好ましく、38:62〜80:20が特に好ましい。
CH2=CX4Rf 5、CF2=CFRf 5、CF2=CFORf 5、CH2=C(Rf 5)2
(式中、X4は水素原子またはフッ素原子、Rf 5はエーテル結合性酸素原子を含んでいてもよいフルオロアルキル基を表す)
で表される単量体が挙げられ、なかでも、CH2=CX4Rf 5で表される含フッ素ビニルモノマーが好ましく、Rf 5が炭素数1〜8のフルオロアルキル基であるCH2=CX4Rf 5で表される含フッ素ビニルモノマーがより好ましい。
FEPは、とりわけフッ素ゴム成形品の耐熱性が優れたものとなり、優れた燃料バリア性が発現する点で好ましい。FEPとしては、特に限定されないが、TFE単位70〜99モル%とHFP単位1〜30モル%からなる共重合体であることが好ましく、TFE単位80〜97モル%とHFP単位3〜20モル%からなる共重合体であることがより好ましい。TFE単位が70モル%未満では機械物性が低下する傾向があり、99モル%をこえると融点が高くなりすぎ成形性が低下する傾向がある。
PFAは、とりわけフッ素ゴム成形品の耐熱性が優れたものとなり、優れた燃料バリア性が発現する点で好ましい。PFAとしては、特に限定されないが、TFE単位70〜99モル%とPAVE単位1〜30モル%からなる共重合体であることが好ましく、TFE単位80〜97モル%とPAVE単位3〜20モル%からなる共重合体であることがより好ましい。TFE単位が70モル%未満では機械物性が低下する傾向があり、99モル%をこえると融点が高くなりすぎ成形性が低下する傾向がある。
CTFE/TFE共重合体は、CTFE単位とTFE単位の含有モル比がCTFE:TFE=2:98〜98:2であることが好ましく、5:95〜90:10であることがより好ましい。CTFE単位が2モル%未満であると薬液透過性が悪化しまた溶融加工が困難になる傾向があり、98モル%をこえると成型時の耐熱性、耐薬品性が悪化する場合がある。
(I)フッ素ゴム(A)とフッ素樹脂(B)とを共凝析して架橋性フッ素ゴム組成物を得る工程、
(II)架橋性フッ素ゴム組成物を成形し、架橋して、架橋成形品を得る成形架橋工程、及び、
(III)架橋成形品をフッ素樹脂(B)の融点以上の温度に加熱してフッ素ゴム成形品を得る熱処理工程
を含む。
この工程は、フッ素ゴム(A)とフッ素樹脂(B)とを共凝析して架橋性フッ素ゴム組成物を得る工程である。
この工程は、混合工程(I)で得られた架橋性フッ素ゴム組成物を成形し架橋して架橋成形品を製造する工程である。成形及び架橋の順序は限定されず、成形した後架橋してもよいし、架橋した後成形してもよいし、成形と架橋とを同時に行ってもよい。
この工程では、成形架橋工程(II)で得られた架橋成形品をフッ素樹脂(B)の融点以上の温度に加熱してフッ素ゴム成型品を得る。
半導体製造装置、液晶パネル製造装置、プラズマパネル製造装置、プラズマアドレス液晶パネル、フィールドエミッションディスプレイパネル、太陽電池基板等の半導体関連分野では、O(角)−リング、パッキン、ガスケット、ダイアフラム、その他の各種シール材等があげられ、これらはCVD装置、ドライエッチング装置、ウェットエッチング装置、酸化拡散装置、スパッタリング装置、アッシング装置、洗浄装置、イオン注入装置、排気装置に用いることができる。具体的には、ゲートバルブのO−リング、クォーツウィンドウのO−リング、チャンバーのO−リング、ゲートのO−リング、ベルジャーのO−リング、カップリングのO−リング、ポンプのO−リング、ダイアフラム、半導体用ガス制御装置のO−リング、レジスト現像液、剥離液用のO−リング、その他の各種シール材として用いることができる。
自動車関連分野では、ピストンリング、シャフトシール、バルブステムシール、クランクシャフトシール、カムシャフトシール、オイルシールなどがあげられる。
一般に、他材と接触して摺動を行う部位に用いられるフッ素ゴム製品があげられる。
コンピュータ分野での、ハードディスククラッシュストッパーなどがあげられる。
自動車のワイパーブレード、屋外テントの引き布などがあげられる。
キュラストメーターII型(JSR(株)製)にて最低トルク(ML)、最高トルク(MH)、誘導時間(T10)および最適加硫時間(T90)を測定する。
JIS K6251に準じて測定した。
JIS K6251に準じて測定した。
JIS K6251に準じて測定した。
JIS K6253に準じ、デュロメータ タイプAにて測定した(ピーク値)。
レスカ社製フリクションプレーヤーFPR2000で、加重20g、回転モード、回転数60rpm、回転半径10mmで測定を行い、回転後5分以上経過した後、安定した際の摩擦係数を読み取り、その数値を動摩擦係数とした。
VdF/HFP/TFE/シアノ基含有モノマー=50/30/19/1(モル%)の共重合体
ML1+10(121℃)=88
ダイキン工業製ネオフロンFEPディスパージョン
(商品名;ND−1、MFR;1.7g/10min、融点;約240℃)
カーボンブラック(Cancarb社製のMTカーボン:N990)
ウレア(尿素)(キシダ化学社製、特級試薬)
(I)工程
フッ素ゴム(A)のディスパージョン(ポリマー含量24質量%)とフッ素樹脂(B)のディスパージョン(ポリマー含量32質量%)を、フッ素ゴム(A):フッ素樹脂(B)の固形分質量比が70:30となるように混合したものをディスパージョンDとする。
次にディスパージョンD 400gを純水500gに投入後、ミキサーで混合しながら硫酸アルミニウムを2g添加し、約3分混合して固形分を取り出した。
この固形分を、80℃のオーブンで20時間乾燥したものを、共凝析物とする。
(成形工程)
得られたフルコンパウンドを8インチオープンロールにより最終的に3mmの厚さの未架橋フッ素ゴムシートに成形した。
この未架橋フッ素ゴムシートを金型で180℃にて15分間プレス架橋し、厚さが2mmの架橋フッ素ゴムシートを得た。
架橋フッ素ゴムシート(含まれるフッ素樹脂Bの融点:240℃)を230℃および250℃に維持された加熱炉中に24時間または48時間入れ、それぞれ熱処理をした。
架橋性フッ素ゴム組成物としてフッ素ゴム(A)にフッ素樹脂を共凝析せず、充填剤を20質量部、アンモニア発生化合物を0.4質量部としたほかは実施例1と同様に成形架橋工程を施して架橋フッ素ゴムシートを製造した。
材料温度200℃でフッ素ゴム(A)とフッ素樹脂(B)とを混練りした後、充填剤を20質量部、アンモニア発生化合物を0.3質量部としたほかは実施例1と同様に成形架橋工程を施して架橋フッ素ゴムシートを製造した。
Claims (12)
- フッ素ゴム(A)及びフッ素樹脂(B)を含み、
フッ素ゴム(A)及びフッ素樹脂(B)は、フッ素ゴム(A)とフッ素樹脂(B)とを共凝析して得られたものである
ことを特徴とする架橋性フッ素ゴム組成物。 - フッ素ゴム(A)は、ビニリデンフルオライド/ヘキサフルオロプロピレン共重合体、ビニリデンフルオライド/ヘキサフルオロプロピレン/テトラフルオロエチレン共重合体、テトラフルオロエチレン/プロピレン共重合体、テトラフルオロエチレン/プロピレン/ビニリデンフルオライド共重合体、エチレン/ヘキサフルオロプロピレン共重合体、エチレン/ヘキサフルオロプロピレン/ビニリデンフルオライド共重合体、エチレン/ヘキサフルオロプロピレン/テトラフルオロエチレン共重合体、ビニリデンフルオライド/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、及び、ビニリデンフルオライド/クロロトリフルオロエチレ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記載の架橋性フッ素ゴム組成物。
- フッ素ゴム(A)は、架橋部位を与えるモノマー由来の共重合単位を含む請求項1又は2記載の架橋性フッ素ゴム組成物。
- フッ素樹脂(B)は、エチレン/テトラフルオロエチレン共重合体、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、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/ビニリデンフルオライド/ヘキサフルオロプロピレン共重合体、ポリビニリデンフルオライド、及び、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又は3記載の架橋性フッ素ゴム組成物。
- フッ素ゴム(A)とフッ素樹脂(B)の質量割合(A)/(B)が、60/40〜97/3である請求項1、2、3又は4記載の架橋性フッ素ゴム組成物。
- 請求項1、2、3、4又は5記載の架橋性フッ素ゴム組成物を架橋して得られるフッ素ゴム成形品。
- (I)フッ素ゴム(A)とフッ素樹脂(B)とを共凝析して請求項1、2、3、4又は5記載の架橋性フッ素ゴム組成物を得る工程、
(II)架橋性フッ素ゴム組成物を成形し、架橋して、架橋成形品を得る成形架橋工程、及び、
(III)架橋成形品をフッ素樹脂(B)の融点以上の温度に加熱してフッ素ゴム成形品を得る熱処理工程
を含むフッ素ゴム成形品の製造方法。 - 請求項7記載の製造方法により得られるフッ素ゴム成形品。
- シール材である請求項6又は8記載のフッ素ゴム成形品。
- 摺動部材である請求項6又は8記載のフッ素ゴム成形品。
- 非粘着性部材である請求項6又は8記載のフッ素ゴム成形品。
- 表面に撥水撥油性を有する請求項6又は8記載のフッ素ゴム成形品。
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-
2010
- 2010-07-02 KR KR1020127000095A patent/KR101397843B1/ko active IP Right Grant
- 2010-07-02 WO PCT/JP2010/061326 patent/WO2011002080A1/ja active Application Filing
- 2010-07-02 US US13/381,585 patent/US8796384B2/en active Active
- 2010-07-02 JP JP2011520993A patent/JP5287987B2/ja active Active
- 2010-07-02 CN CN201080029142.0A patent/CN102471497B/zh active Active
- 2010-07-02 EP EP10794248.4A patent/EP2450395B1/en not_active Revoked
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US20120108753A1 (en) | 2012-05-03 |
JP5598530B2 (ja) | 2014-10-01 |
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WO2011002080A1 (ja) | 2011-01-06 |
JP5287987B2 (ja) | 2013-09-11 |
EP2450395B1 (en) | 2014-06-11 |
CN102471497B (zh) | 2014-10-22 |
EP2450395A4 (en) | 2013-02-27 |
KR101397843B1 (ko) | 2014-05-20 |
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