JP2018151028A - ガスケット - Google Patents
ガスケット Download PDFInfo
- Publication number
- JP2018151028A JP2018151028A JP2017048675A JP2017048675A JP2018151028A JP 2018151028 A JP2018151028 A JP 2018151028A JP 2017048675 A JP2017048675 A JP 2017048675A JP 2017048675 A JP2017048675 A JP 2017048675A JP 2018151028 A JP2018151028 A JP 2018151028A
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- Prior art keywords
- gasket
- polymer chain
- group
- monomer
- polymerization
- 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.)
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- 229920000642 polymer Polymers 0.000 claims abstract description 118
- 230000003746 surface roughness Effects 0.000 claims abstract description 34
- -1 silane compound Chemical class 0.000 claims description 87
- 239000000178 monomer Substances 0.000 claims description 53
- 229910000077 silane Inorganic materials 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 34
- 238000006116 polymerization reaction Methods 0.000 claims description 32
- 238000010526 radical polymerization reaction Methods 0.000 claims description 31
- 239000000758 substrate Substances 0.000 claims description 29
- 239000003999 initiator Substances 0.000 claims description 27
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical group FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 claims description 19
- 238000002715 modification method Methods 0.000 claims description 12
- 230000000977 initiatory effect Effects 0.000 claims description 11
- 229920001002 functional polymer Polymers 0.000 claims description 8
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 26
- 239000000463 material Substances 0.000 abstract description 10
- 239000000243 solution Substances 0.000 description 43
- 239000012965 benzophenone Substances 0.000 description 39
- 229910052731 fluorine Inorganic materials 0.000 description 37
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 33
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 32
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 32
- 239000011737 fluorine Substances 0.000 description 32
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 30
- 238000006243 chemical reaction Methods 0.000 description 29
- 229920001971 elastomer Polymers 0.000 description 25
- 239000005060 rubber Substances 0.000 description 24
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 16
- 125000004432 carbon atom Chemical group C* 0.000 description 14
- 150000001875 compounds Chemical class 0.000 description 14
- 239000011521 glass Substances 0.000 description 14
- 150000003961 organosilicon compounds Chemical class 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 12
- 125000001153 fluoro group Chemical group F* 0.000 description 12
- 229920002725 thermoplastic elastomer Polymers 0.000 description 12
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 10
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 9
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 9
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 9
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- 125000000217 alkyl group Chemical group 0.000 description 8
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- 150000002430 hydrocarbons Chemical group 0.000 description 8
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 6
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- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 5
- 125000005843 halogen group Chemical group 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 125000004430 oxygen atom Chemical group O* 0.000 description 5
- 239000010702 perfluoropolyether Substances 0.000 description 5
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 125000003545 alkoxy group Chemical group 0.000 description 4
- 150000008366 benzophenones Chemical class 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 4
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- JNELGWHKGNBSMD-UHFFFAOYSA-N xanthone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3OC2=C1 JNELGWHKGNBSMD-UHFFFAOYSA-N 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical group CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 150000001728 carbonyl compounds Chemical class 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 125000003700 epoxy group Chemical group 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229920005555 halobutyl Polymers 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
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- 238000012986 modification Methods 0.000 description 3
- 125000000962 organic group Chemical group 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
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- 239000010703 silicon Substances 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 3
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 2
- NOYRFDHEJYWIHG-UHFFFAOYSA-N 2-methoxythioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(OC)=CC=C3SC2=C1 NOYRFDHEJYWIHG-UHFFFAOYSA-N 0.000 description 2
- VVBLNCFGVYUYGU-UHFFFAOYSA-N 4,4'-Bis(dimethylamino)benzophenone Chemical compound C1=CC(N(C)C)=CC=C1C(=O)C1=CC=C(N(C)C)C=C1 VVBLNCFGVYUYGU-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-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
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- XPQSGEPNUNGRED-UHFFFAOYSA-N [O-][NH+](c1ccccc1)c1ccccc1 Chemical compound [O-][NH+](c1ccccc1)c1ccccc1 XPQSGEPNUNGRED-UHFFFAOYSA-N 0.000 description 2
- 239000000370 acceptor Substances 0.000 description 2
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- 125000003342 alkenyl group Chemical group 0.000 description 2
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- 125000001309 chloro group Chemical group Cl* 0.000 description 2
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- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- AUZONCFQVSMFAP-UHFFFAOYSA-N disulfiram Chemical compound CCN(CC)C(=S)SSC(=S)N(CC)CC AUZONCFQVSMFAP-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- YLQWCDOCJODRMT-UHFFFAOYSA-N fluoren-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C2=C1 YLQWCDOCJODRMT-UHFFFAOYSA-N 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
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- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
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- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 2
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- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 description 2
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- 238000004073 vulcanization Methods 0.000 description 2
- HCCPWBWOSASKLG-UHFFFAOYSA-N (2,3,4,5,6-pentafluorophenyl)-phenylmethanone Chemical compound FC1=C(F)C(F)=C(F)C(F)=C1C(=O)C1=CC=CC=C1 HCCPWBWOSASKLG-UHFFFAOYSA-N 0.000 description 1
- VLTYTTRXESKBKI-UHFFFAOYSA-N (2,4-dichlorophenyl)-phenylmethanone Chemical compound ClC1=CC(Cl)=CC=C1C(=O)C1=CC=CC=C1 VLTYTTRXESKBKI-UHFFFAOYSA-N 0.000 description 1
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- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- DVMSVWIURPPRBC-UHFFFAOYSA-N 2,3,3-trifluoroprop-2-enoic acid Chemical compound OC(=O)C(F)=C(F)F DVMSVWIURPPRBC-UHFFFAOYSA-N 0.000 description 1
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- AYCNOIJHAJUAIH-UHFFFAOYSA-N 2-but-1-enyl-4-phenylthioxanthen-9-one Chemical compound C(=CCC)C1=CC=2C(C3=CC=CC=C3SC2C(=C1)C1=CC=CC=C1)=O AYCNOIJHAJUAIH-UHFFFAOYSA-N 0.000 description 1
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- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- KTALPKYXQZGAEG-UHFFFAOYSA-N 2-propan-2-ylthioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(C(C)C)=CC=C3SC2=C1 KTALPKYXQZGAEG-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- NCLVBVXPXLVABY-UHFFFAOYSA-N 4-cyclohexylthioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1C1CCCCC1 NCLVBVXPXLVABY-UHFFFAOYSA-N 0.000 description 1
- IKVYHNPVKUNCJM-UHFFFAOYSA-N 4-propan-2-ylthioxanthen-9-one Chemical compound S1C2=CC=CC=C2C(=O)C2=C1C(C(C)C)=CC=C2 IKVYHNPVKUNCJM-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- NQSMEZJWJJVYOI-UHFFFAOYSA-N Methyl 2-benzoylbenzoate Chemical compound COC(=O)C1=CC=CC=C1C(=O)C1=CC=CC=C1 NQSMEZJWJJVYOI-UHFFFAOYSA-N 0.000 description 1
- PMDCZENCAXMSOU-UHFFFAOYSA-N N-ethylacetamide Chemical group CCNC(C)=O PMDCZENCAXMSOU-UHFFFAOYSA-N 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
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- DEKZKCDJQLBBRA-UHFFFAOYSA-N tributoxy(butyl)silane Chemical compound CCCCO[Si](CCCC)(OCCCC)OCCCC DEKZKCDJQLBBRA-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
前記表面粗さRaは、0.6以下であることが好ましい。
前記基材ガスケットの表面粗さRaは、0.8以下であることが好ましい。
前記基材ガスケットの表面粗さRaは、0.6以下であることが好ましい。
図1はポリマー鎖を固定化する基材1(基材ガスケット1)を示す縦断面図(摺動方向の断面図(縦断図))の一例である。図2は、図1の基材ガスケット1の表面にポリマー鎖21を固定化した本発明のガスケット2の縦断面図の一例である。図3は、図2のガスケット2の第1突出部14aの部分拡大図(円で囲まれた部位)の一例である。
なお、本明細書において、表面粗さRaは、JIS B0601−2001で規定される中心線表面粗さRaである。
上記加硫ゴム、上記熱可塑性エラストマーとしては、二重結合に隣接する炭素原子(アリル位の炭素原子)を有するものが好適に使用される。
フッ素含有モノマーとしては、含フッ素(メタ)アクリル変性有機ケイ素化合物、環状シロキサンなどが挙げられる。フッ素含有モノマーとしては、本発明の効果がより良好に得られるという点から、パーフルオロポリエーテル基を有するモノマーが好ましい。
で表される連結基であり、vは0〜5の整数であり、なおかつQf 11がフッ素原子のときv=0である。)
(Rf21R21SiO)(RAR21SiO)h
(式中、R21は水素原子、メチル基、エチル基、プロピル基又はフェニル基であり、Rf21はフッ素原子を含有する有機基であり、RAは(メタ)アクリル基を含有する有機基であり、hはh≧2である。)
で表される環状シロキサンからなり、1分子中にF原子を3個以上及びSi原子を3個以上含有する多官能(メタ)アクリレート化合物も挙げられる。
なお、工程3は、工程3−1及び工程3−2のサイクルを更に繰り返すものでもよい。この場合、工程3−1及び工程3−2で鎖延長させたポリマー鎖に、更にポリマー鎖が鎖延長される。
各々の表面粗さを持つ金型を用いて、表1に記載の形状(図1:環状突出部3個(第1突出部、中間突出部、底面側突出部))、表面粗さRaを持つ基材ガスケット(イソプレンユニットを含むクロロブチルゴム(不飽和度:1〜2%)を、トリアジンで架橋(180℃で10分加硫))して作製した。なお、基材ガスケット表面の表面粗さRaは、金型の表面粗さを適宜変更することで調整した(金型作製時の最終磨き工程での研磨剤の粒径変更により適宜調整)。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に5分間浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド水溶液(2.5M)の入ったガラス反応容器に浸漬し、365nmの波長を持つLED−UVライトを200分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。これにより目的のガスケットを得た(図2)。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に5分間浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド水溶液(2.5M)の入ったガラス反応容器に浸漬し、365nmの波長を持つLED−UVライトを150分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。これにより目的のガスケットを得た(図2)。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド/アクリル酸混合水溶液(2.5M、アクリルアミド:アクリル酸=75:25)の入ったガラス反応容器に浸漬し、365nmの波長持つLED−UVライトを60分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。これにより目的のガスケットを得た(図2)。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド/アクリル酸混合水溶液(2.5M、アクリルアミド:アクリル酸=75:25)の入ったガラス反応容器に浸漬し、365nmの波長持つLED−UVライトを90分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。これにより目的のガスケットを得た(図2)。
表1に記載の形状の基材ガスケットを、アクリル酸とアクリルアミドの25:75の混合水溶液(2.5M:4.5gのアクリル酸と13.4gのアクリルアミドを100mLの水に溶解し、更に2mgのベンゾフェノンを溶解)の入ったガラス反応容器に浸漬し、365nmの波長を持つLED−UVライトを120分間照射してラジカル重合を行ってゴム表面にポリマー鎖を成長させた。これにより目的のガスケットを得た(図2)。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド/アクリル酸混合水溶液(2.5M、アクリルアミド:アクリル酸=75:25)の入ったガラス反応容器に浸漬し、365nmの波長持つLED−UVライトを50分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。その後、表面を水洗し、乾燥させた。
次に、乾燥した加硫ゴムガスケットを再度ベンゾフェノンの3wt%アセトン溶液に5分間浸漬して、ポリマー鎖の表面にベンゾフェノンを吸着させ、乾燥させた。
更に、乾燥した加硫ゴムガスケット表面に、フッ素含有モノマー液(信越化学工業社製KY−1203(下記式で示される含フッ素エポキシ変性有機ケイ素化合物及び含フッ素(メタ)アクリル変性有機ケイ素化合物の混合物)をエタノールで20wt%に希釈したもの)を塗布し、365nmの波長を持つLED−UVライトを10分間照射してラジカル重合を行って、ポリマー鎖を延長させた。これにより目的のガスケットを得た(図2)。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド/アクリル酸混合水溶液(2.5M、アクリルアミド:アクリル酸=75:25)の入ったガラス反応容器に浸漬し、365nmの波長持つLED−UVライトを50分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。その後、表面を水洗し、乾燥させた。
次に、乾燥した加硫ゴムガスケットを、シラン化合物であるプライマーコートPC−3B((株)フロロテクノロジー製、上記式で表されるブトキシ/エトキシ系テトラアルコキシシラン)に浸漬して、引き上げて、乾燥した。
そして、乾燥した加硫ゴムガスケットを、パーフルオロエーテル基含有シラン化合物(ダイキン工業(株)製、オプツールDSX−E、上記式(A)の化合物)のC4F9OC2H5(Novec HFE−7200:3M製)の2%溶液に浸漬して、引き上げた。その後、湿度90%下で、24時間放置して反応させた。その後、アセトン洗浄を行い、乾燥させた。これにより目的のガスケットを得た(図2)。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド/アクリル酸混合水溶液(2.5M、アクリルアミド:アクリル酸=75:25)の入ったガラス反応容器に浸漬し、365nmの波長持つLED−UVライトを60分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。その後、表面を水洗し、乾燥させた。
次に、乾燥した加硫ゴムガスケットを、シラン化合物であるプライマーコートPC−3B((株)フロロテクノロジー製、上記式で表されるブトキシ/エトキシ系テトラアルコキシシラン)に浸漬して、引き上げて、乾燥した。
そして、乾燥した加硫ゴムガスケットを、パーフルオロエーテル基含有シラン化合物(ダイキン工業(株)製、オプツールDSX−E、上記式(A)の化合物)のC4F9OC2H5(Novec HFE−7200:3M製)の2%溶液に浸漬して、引き上げた。その後、湿度90%下で、24時間放置して反応させた。その後、アセトン洗浄を行い、乾燥させた。これにより目的のガスケットを得た(図2)。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド/アクリル酸混合水溶液(2.5M、アクリルアミド:アクリル酸=75:25)の入ったガラス反応容器に浸漬し、365nmの波長持つLED−UVライトを75分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。その後、表面を水洗し、乾燥させた。
次に、乾燥した加硫ゴムガスケットを、シラン化合物であるプライマーコートPC−3B((株)フロロテクノロジー製、上記式で表されるブトキシ/エトキシ系テトラアルコキシシラン)に浸漬して、引き上げて、乾燥した。
そして、乾燥した加硫ゴムガスケットを、パーフルオロエーテル基含有シラン化合物(ダイキン工業(株)製、オプツールDSX−E、上記式(A)の化合物)のC4F9OC2H5(Novec HFE−7200:3M製)の2%溶液に浸漬して、引き上げた。その後、湿度90%下で、24時間放置して反応させた。その後、アセトン洗浄を行い、乾燥させた。これにより目的のガスケットを得た(図2)。
表1に記載の形状の基材ガスケットに変更した以外は、実施例7と同様にしてガスケットを得た(図2)。
表1に記載の形状の基材ガスケットそのものを用いた。
表1に記載の形状の基材ガスケットそのものを用いた。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド水溶液(2.5M)の入ったガラス反応容器に浸漬し、365nmの波長を持つLED−UVライトを240分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。これにより目的のガスケットを得た。
表1に記載の形状の基材ガスケットをベンゾフェノンの3wt%アセトン溶液に5分間浸漬して、基材ガスケット表面にベンゾフェノンを吸着させ、乾燥させた。
乾燥した基材ガスケットをアクリルアミド水溶液(2.5M)の入ったガラス反応容器に浸漬し、365nmの波長を持つLED−UVライトを200分照射し、ラジカル重合を行ってゴム表面にポリマー鎖を成長させた。これにより目的のガスケットを得た。
(表面粗さRa)
レーザー顕微鏡を用いて、非接触で表面粗さを1つの基材ガスケット及びガスケットで4箇所(第1ピーク)測定し、そのRaの4点の平均を表面粗さRaとした(JIS B0601−2001で規定される中心線表面粗さRaの平均)。
ガスケット表面に形成されたポリマー鎖の長さは、ポリマー鎖が形成されたガスケット断面を、SEMを使用し、加速電圧15kV、1000倍で測定した。撮影されたポリマー層の厚みをポリマー鎖の長さとした。
ガスケット表面の摩擦抵抗力を測定するために、実施例、比較例で作製したガスケットを注射器のCOP樹脂シリンジにセットし、引張試験機を用いて押し込んでいき、そのときの摩擦抵抗力を測定した(押し込み速度:30mm/min)。比較例1の摩擦抵抗力を100として、下記式を用い、各実施例について摩擦抵抗指数で示した。指数が小さい方が、摩擦抵抗力が低いことを示す。
(摩擦抵抗指数)=各実施例の摩擦抵抗力/比較例1の摩擦抵抗力×100
実施例、比較例で作製したガスケットを注射器のCOP樹脂シリンジにセットし、食紅水溶液を入れ、キャップをして、40℃で2週間、1ヶ月、3ヶ月、6ヶ月保管して、液漏れの状態を目視で確認した。
以上のことから、ポリマー鎖を摺動部に固定化すると共に、第1突出部等の表面粗さを小さくすることで、摺動性と耐液漏れ性がバランスよく改善されることが明らかとなった。
2 ガスケット(ポリマー鎖固定化後)
12 天面部
13 底面部
14 摺動部(胴部)
14a 第1突出部
14b 中間突出部
14c 底面側突出部
21 ポリマー鎖
Claims (14)
- 基材ガスケット表面の少なくとも一部にポリマー鎖が固定化され、摺動面に複数の環状突出部を有するガスケットであって、
前記環状突出部のうち、天面に最も近い第1突出部の表面粗さRaが1.0以下であるガスケット。 - 前記表面粗さRaが0.8以下である請求項1記載のガスケット。
- 前記表面粗さRaが0.6以下である請求項1記載のガスケット。
- 前記基材ガスケットの表面粗さRaが1.0以下である請求項1〜3のいずれかに記載のガスケット。
- 前記基材ガスケットの表面粗さRaが0.8以下である請求項1〜3のいずれかに記載のガスケット。
- 前記基材ガスケットの表面粗さRaが0.6以下である請求項1〜3のいずれかに記載のガスケット。
- 前記ポリマー鎖は、基材ガスケットの表面に重合開始点Aを形成する工程1と、前記重合開始点Aを起点にしてモノマーをラジカル重合させてポリマー鎖を成長させる工程2とを含む表面改質方法Iを用いて固定化されたものである請求項1〜6のいずれかに記載のガスケット。
- 前記表面改質方法Iは、前記工程2で成長させたポリマー鎖に、更に同一又は異なるポリマー鎖を延長させる工程3、又は、前記工程2で成長させたポリマー鎖の表面にシラン化合物を付加させ、更にパーフルオロエーテル基含有シラン化合物を反応させて機能性ポリマー鎖を成長させる工程3’を含む請求項7記載のガスケット。
- 前記工程1は、基材ガスケットの表面に光重合開始剤Aを吸着させ、又は更に300〜450nmのLED光を照射し、前記表面上の光重合開始剤Aから重合開始点Aを形成させるものである請求項7又は8記載のガスケット。
- 前記工程2は、重合開始点Aを起点にしてモノマーを300〜450nmのLED光の照射によりラジカル重合させてポリマー鎖を成長させるものである請求項7〜9のいずれかに記載のガスケット。
- 前記ポリマー鎖は、基材ガスケットの表面に光重合開始剤Aの存在下でモノマーをラジカル重合させてポリマー鎖を成長させる工程Iを含む表面改質方法IIを用いて固定化されたものである請求項1〜6のいずれかに記載のガスケット。
- 前記表面改質方法IIは、前記工程Iで成長させたポリマー鎖に、更に同一又は異なるポリマー鎖を延長させる工程II、又は、前記工程Iで成長させたポリマー鎖の表面にシラン化合物を付加させ、更にパーフルオロエーテル基含有シラン化合物を反応させて機能性ポリマー鎖を成長させる工程II’を含む請求項11記載のガスケット。
- 前記工程Iは、モノマーを300〜450nmのLED光の照射によりラジカル重合させてポリマー鎖を成長させるものである請求項11又は12記載のガスケット。
- 前記ポリマー鎖の長さが500〜5000nmである請求項1〜13のいずれかに記載のガスケット。
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JP2020120919A (ja) * | 2019-01-30 | 2020-08-13 | 住友ゴム工業株式会社 | シリンジ用ガスケット |
JP7247608B2 (ja) | 2019-01-30 | 2023-03-29 | 住友ゴム工業株式会社 | シリンジ用ガスケット |
Also Published As
Publication number | Publication date |
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US20180266565A1 (en) | 2018-09-20 |
CN108570162A (zh) | 2018-09-25 |
EP3376076A1 (en) | 2018-09-19 |
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