JPWO2018025600A1 - 熱伝導性シリコーンゴム複合シート - Google Patents
熱伝導性シリコーンゴム複合シート Download PDFInfo
- Publication number
- JPWO2018025600A1 JPWO2018025600A1 JP2018531807A JP2018531807A JPWO2018025600A1 JP WO2018025600 A1 JPWO2018025600 A1 JP WO2018025600A1 JP 2018531807 A JP2018531807 A JP 2018531807A JP 2018531807 A JP2018531807 A JP 2018531807A JP WO2018025600 A1 JPWO2018025600 A1 JP WO2018025600A1
- Authority
- JP
- Japan
- Prior art keywords
- group
- silicone rubber
- composite sheet
- rubber composite
- thermally conductive
- 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
Links
- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 69
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 69
- 239000002131 composite material Substances 0.000 title claims abstract description 67
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 43
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 30
- 239000000057 synthetic resin Substances 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 21
- 150000003377 silicon compounds Chemical class 0.000 claims abstract description 17
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 17
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 14
- 239000011231 conductive filler Substances 0.000 claims abstract description 13
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 13
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 12
- -1 or both Chemical group 0.000 claims description 47
- 239000000843 powder Substances 0.000 claims description 21
- 229920001721 polyimide Polymers 0.000 claims description 16
- 238000007259 addition reaction Methods 0.000 claims description 13
- 150000001451 organic peroxides Chemical group 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 11
- 239000004642 Polyimide Substances 0.000 claims description 10
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000006459 hydrosilylation reaction Methods 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052582 BN Inorganic materials 0.000 claims description 5
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 5
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 5
- 239000004962 Polyamide-imide Substances 0.000 claims description 5
- 229920002647 polyamide Polymers 0.000 claims description 5
- 229920002312 polyamide-imide Polymers 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- JVERADGGGBYHNP-UHFFFAOYSA-N 5-phenylbenzene-1,2,3,4-tetracarboxylic acid Chemical compound OC(=O)C1=C(C(O)=O)C(C(=O)O)=CC(C=2C=CC=CC=2)=C1C(O)=O JVERADGGGBYHNP-UHFFFAOYSA-N 0.000 claims description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 3
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 claims description 3
- 239000002318 adhesion promoter Substances 0.000 claims description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 3
- 150000004985 diamines Chemical class 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 238000010292 electrical insulation Methods 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 90
- 238000001723 curing Methods 0.000 description 32
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 17
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 12
- 229920001577 copolymer Polymers 0.000 description 11
- 125000003342 alkenyl group Chemical group 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 239000004205 dimethyl polysiloxane Substances 0.000 description 7
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 229910052697 platinum Inorganic materials 0.000 description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 229920006136 organohydrogenpolysiloxane Polymers 0.000 description 6
- 238000000576 coating method Methods 0.000 description 5
- 238000004898 kneading Methods 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 125000005388 dimethylhydrogensiloxy group Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229920001843 polymethylhydrosiloxane Polymers 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 description 2
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 125000003944 tolyl group Chemical group 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- NLBJAOHLJABDAU-UHFFFAOYSA-N (3-methylbenzoyl) 3-methylbenzenecarboperoxoate Chemical compound CC1=CC=CC(C(=O)OOC(=O)C=2C=C(C)C=CC=2)=C1 NLBJAOHLJABDAU-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-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
- 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
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 125000006201 3-phenylpropyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 0 C[*+](C)N(C(N(C)C(N1C)=O)=O)C1=O Chemical compound C[*+](C)N(C(N(C)C(N1C)=O)=O)C1=O 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 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 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000006038 hexenyl group Chemical group 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
-
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- 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
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
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Abstract
Description
即ち、本発明は、下記の熱伝導性シリコーンゴム複合シートを提供するものである。
中間層および該中間層の両面に積層された一対の外層を有し、
(A)中間層は、熱伝導率が0.20W/m・K以上であり、かつ引張弾性率が5GPa以上である電気絶縁性の合成樹脂フィルム層であり、
(B)外層は、(a)オルガノポリシロキサン、(b)硬化剤、(c)熱伝導性充填剤、並びに、(d)エポキシ基、アルコキシ基、メチル基、ビニル基、およびSi−H基からなる群から選ばれる少なくとも1種の基を有するケイ素化合物系接着性付与剤を含む組成物の硬化物のシリコーンゴム層である、
積層構造体を含む熱伝導性シリコーンゴム複合シート。
前記中間層の厚さが25μm以上であり、熱伝導性シリコーンゴム複合シートの総厚みが300μm以下である[1]に記載の熱伝導性シリコーンゴム複合シート。
[3]
前記中間層の引張強度が200MPa以上である[1]または[2]に記載の熱伝導性シリコーンゴム複合シート。
[4]
前記合成樹脂フィルムに用いられる合成樹脂が芳香族ポリイミド、ポリアミド、ポリアミドイミド、ポリエステル、フッ素系ポリマーまたはこれらの2種以上の組み合わせである[1]〜[3]のいずれか1つに記載の熱伝導性シリコーンゴム複合シート。
[5]
前記合成樹脂フィルムに用いられる合成樹脂がビフェニルテトラカルボン酸二無水物とジアミンの縮重合物であるポリイミドである[1]〜[4]のいずれか1つに記載の熱伝導性シリコーンゴム複合シート。
前記熱伝導性充填剤の粉体が酸化亜鉛粉末、酸化アルミニウム粉末、酸化マグネシウム粉末、水酸化アルミニウム粉末、窒化ホウ素粉末、窒化アルミニウム粉末、酸化ケイ素粉末、炭化ケイ素粉末、ダイヤモンド粉末またはこれらの2種以上の組み合わせである[1]〜[5]のいずれか1つに記載の熱伝導性シリコーンゴム複合シート。
[7]
前記(b)成分の硬化剤がヒドロシリル化反応による付加反応型の硬化剤であり、且つ、前記(d)成分のケイ素化合物系接着性付与剤が、ビニル基、Si−H基またはこれらの両方とを有し、かつエポキシ基、アルコキシ基またはこれらの両方とを有する[1]〜[6]のいずれか1つに記載の熱伝導性シリコーンゴム複合シート。
[8]
前記(b)成分の硬化剤が有機過酸化物であり、且つ、前記(d)成分のケイ素化合物系接着性付与剤が、メチル基、ビニル基またはこれらの両方とを有し、かつエポキシ基、アルコキシ基またはこれらの両方とを有する[1]〜[6]のいずれか1つに記載の熱伝導性シリコーンゴム複合シート。
本発明の複合シートの中間層は、耐熱性および電気絶縁性に優れ、柔軟で、機械的強度が高く、かつ熱伝導率が0.20W/m・K以上の熱伝導性を有している合成樹脂フィルム層である。熱伝導率が0.20W/m・K未満であると、本発明の複合シートの熱伝導性に支障が生じやすい。
本発明において複合シートに含まれる外層は、(a)オルガノポリシロキサン、(b)硬化剤、(c)熱伝導性充填剤、並びに、(d)エポキシ基、アルコキシ基、メチル基、ビニル基、およびSi−H基からなる群から選ばれる少なくとも1種の基を有するケイ素化合物系接着性付与剤を含む組成物を硬化させてなるシリコーンゴム層である。この(B)層の厚さは、本発明の複合シートの適用形態・適用対象により設定することができ、特に制限されないが、30〜300μmが好ましく、特に50〜200μm程度の範囲とするのが好ましい。概して、前記厚さが薄すぎ、30μm未満であると電子部品への形状追随性が悪くなることから、熱伝導性が悪くなるという傾向があり、また、厚すぎ、300μmを超えると複合シートの熱伝導性・剛性が損なわれるという傾向があり、いずれにしても好ましくない。
(a)成分のオルガノポリシロキサンは、平均組成式(1)で表される。
R1 aSiO(4−a)/2 (1)
式(1)中、R1は同一または異なる置換または非置換の炭素原子数1〜10、好ましくは1から8の1価炭化水素基を表わし、aは1.90〜2.05の正数である。
(b)成分の硬化剤がヒドロシリル化反応による付加反応型の硬化剤、すなわちオルガノハイドロジェンポリシロキサンおよび白金系触媒を含む付加反応硬化型のものである場合、(a)成分のオルガノポリシロキサンは、ケイ素原子に結合するアルケニル基をオルガノポリシロキサン1分子中に2個以上、好ましくは3個以上有するオルガノポリシロキサンである。ケイ素原子に結合するアルケニル基の含有量が上記範囲の下限未満、すなわち2個未満であると、得られる組成物が十分に硬化しなくなる。また、ケイ素原子に結合する上記アルケニル基としてはビニル基が好ましい。アルケニル基は、分子鎖末端のおよび側鎖のいずれかに1つ以上結合し、合計で2個以上あればよく、少なくとも1個のアルケニル基が分子鎖末端のケイ素原子に結合していることが好ましい。
(b)成分の硬化剤としては、ヒドロシリル化反応による付加反応型の硬化剤と、有機過酸化物とが挙げられる。
(b)成分がヒドロシリル化反応による付加反応型の硬化剤である場合、前記硬化剤は、1分子中にケイ素原子に結合する水素原子を平均2個以上有するオルガノハイドロジェンポリシロキサンと白金系触媒からなるものである。前記オルガノハイドロジェンポリシロキサンは、アルケニル基を有する(a)成分に付加反応する架橋剤として機能するものである。
(c)成分の熱伝導性充填剤としては、水酸化アルミニウム、酸化アルミニウム、酸化亜鉛、酸化ケイ素、炭化ケイ素、窒化アルミニウム、窒化ホウ素、酸化マグネシウム、ダイヤモンド等の無機粉末が、好適なものとして例示される。(c)成分は、1種単独でも2種以上を組み合わせても使用することができる。
(d)成分は、本発明の熱伝導性シリコーンゴム複合シートを特徴づける重要な成分であり、この成分を、外層を構成するシリコーンゴム組成物中に配合することにより、(A)中間層の熱伝導性合成樹脂フィルム層に対し(B)外層のシリコーンゴム層が強固な接着性を示し、層間剥離を生じることなく、経時的にも耐久性に優れる。また本発明は(d)成分を含む組成物を使用することにより、(A)中間層の熱伝導性合成樹脂フィルム層に対して接着性向上を目的としたプライマー処理を施す工程を省略することができるので、複合シート製造工程の簡略化が図られ、更に、プライマー層を有しないことから、熱伝導性が低減しない複合シートを得ることができる。
以下に、本発明の熱伝導性シリコーンゴム複合シートの製造方法の例を説明する。ただし、本発明の製造方法は、下記の例に限定されない。
<(B)外層用のコーティング組成物の調製>
先ず、上記(a)成分のオルガノポリシロキサンと(c)成分の熱伝導性充填剤とを、ニーダー、バンバリーミキサー、プラネタリーミキサー、品川ミキサー等の混合機を用いて、必要に応じ100℃以上程度の温度に加熱しつつ、混練りする。この混練り工程で、所望により、外層の熱伝導性能を損なわない範囲内で、フュームドシリカ、沈降性シリカ等の補強性シリカ;シリコーンオイル、シリコーンウェッター等;白金、酸化チタン、ベンゾトリアゾール等の難燃剤等を添加・混合してもよい。
上記のコーティング組成物の調製工程により得られた外層用コーティング剤を、上記(A)中間層の熱伝導性合成樹脂フィルム層の両面に、逐次、乾燥炉、加熱炉および巻き取り装置を備えたナイフコーター、キスコーター等のコーティング装置を用いて、連続的に所定の一定の厚さにコーティングした後、溶剤等を乾燥・蒸散させ、ヒドロシリル化反応による付加反応型の硬化剤を配合させた付加反応硬化型外層コーティング剤の場合は、80〜200℃、好ましくは100〜150℃程度に、また、有機過酸化物を硬化剤として配合させた過酸化物硬化型外層コーティング剤の場合は、100〜200℃、好ましくは110〜180℃程度に、加熱して架橋・硬化させることにより、優れた熱伝導性、電気絶縁性、機械的強度、柔軟性、耐熱性、および耐久性を有する本発明の熱伝導性シリコーンゴム複合シートを得ることができる。
(a)平均重合度8,000のジメチルビニルシロキシ基で両末端を封止したジメチルポリシロキサン100質量部、および(c)熱伝導性充填剤として平均粒径8μmの水酸化アルミニウム粉末300質量部と、平均粒径1μmの水酸化アルミニウム粉末100質量部とをバンバリーミキサーにて室温で40分混練りし、次いで100メッシュのストレーナーにて濾過後、2本ロールを用いて、この(a)成分と(c)成分の混合物100質量部に、(d)接着性付与剤として下記構造式(6):
実施例1において、(c)成分の水酸化アルミニウム粉末を、平均粒径8μmの酸化アルミニウム粉末750質量部と、平均粒径1μmの酸化アルミニウム粉末200質量部とに変更した以外は、実施例1と同様にして、総厚みが200μmの熱伝導性シリコーンゴム複合シートを作製した。
(a)25℃における粘度が600mm2/sのジメチルビニルシロキシ基で両末端を封止したジメチルポリシロキサン100質量部、および(c)熱伝導性充填剤として平均粒径4μmの酸化アルミニウム粉末750質量部と、平均粒径9μmの窒化ホウ素粉末250部とを、プラネタリーミキサーにて室温で20分混練りし、100メッシュのストレーナーにて濾過して仕上げた後、更にこの(a)成分と(c)成分の混合物100質量部に、(d)接着性付与剤として下記構造式(2):
実施例1において、中間層に芳香族ポリイミド系フィルム(商品名:カプトン300H、東レデュポン(株)製、熱伝導率:0.12W/m・K、引張弾性率3.4GPa、厚さ:75μm)を用いた以外は、実施例1と同様にして、総厚みが200μmの熱伝導性シリコーンゴム複合シートを作製した。
実施例3において、中間層にポリエチレンテレフタラート系フィルム(商品名:ルミラーS10#50、東レデュポン(株)製、熱伝導率:0.12W/m・K、引張弾性率4.0GPa、厚さ:50μm)を用いた以外は、実施例3と同様にして、総厚みが150μmの熱伝導性シリコーンゴム複合シートを作製した。
実施例1において、(d)接着性付与剤としてのケイ素化合物1.5質量部を添加しなかった以外は、実施例1と同様にして、総厚みが200μmの熱伝導性シリコーンゴム複合シートを作製した。
実施例1において、中間層にフィラーが充填された高熱伝導芳香族ポリイミド系フィルム(商品名:カプトン300MT、東レデュポン(株)製、熱伝導率:0.26W/m・K、引張弾性率3.4GPa、厚さ:75μm)を用いた以外は、実施例1と同様にして、総厚みが200μmの熱伝導性シリコーンゴム複合シートを作製した。
上記実施例1〜3および比較例1〜4で作製した各複合シートについて、下記手法により諸特性を測定した。その測定結果を表1に示す。
JIS K 6854に準拠して、180度剥離試験を行って、接着強度を測定した。なお、試験試料として、厚さ25μmの芳香族ポリイミド系フィルムの片側の表面上に、肉厚1mmのゴム層を形成させた2層構造のものを作製した。
ASTM D 5470に準拠して、50℃/100psiの条件で熱抵抗を測定した。
40×40mmのサイズにカットした複合シートを、試験装置で片側の端部をつまみ上げた際にシートに撓みが発生するかどうかを目視で確認した。撓みが発生する場合を×、殆ど撓みが発生しない場合を○と評価した。
Claims (8)
- 中間層および該中間層の両面に積層された一対の外層を有し、
(A)中間層は、熱伝導率が0.20W/m・K以上であり、かつ引張弾性率が5GPa以上である電気絶縁性の合成樹脂フィルム層であり、
(B)外層は、(a)オルガノポリシロキサン、(b)硬化剤、(c)熱伝導性充填剤、並びに、(d)エポキシ基、アルコキシ基、メチル基、ビニル基、およびSi−H基からなる群から選ばれる少なくとも1種の基を有するケイ素化合物系接着性付与剤を含む組成物の硬化物のシリコーンゴム層である、
積層構造体を含む熱伝導性シリコーンゴム複合シート。 - 前記中間層の厚さが25μm以上であり、熱伝導性シリコーンゴム複合シートの総厚みが300μm以下である請求項1に記載の熱伝導性シリコーンゴム複合シート。
- 前記中間層の引張強度が200MPa以上である請求項1または2に記載の熱伝導性シリコーンゴム複合シート。
- 前記合成樹脂フィルムに用いられる合成樹脂が芳香族ポリイミド、ポリアミド、ポリアミドイミド、ポリエステル、フッ素系ポリマーまたはこれらの2種以上の組み合わせである請求項1〜3のいずれか1項に記載の熱伝導性シリコーンゴム複合シート。
- 前記合成樹脂フィルムに用いられる合成樹脂がビフェニルテトラカルボン酸二無水物とジアミンの縮重合物であるポリイミドである請求項1〜4のいずれか1項に記載の熱伝導性シリコーンゴム複合シート。
- 前記熱伝導性充填剤の粉体が酸化亜鉛粉末、酸化アルミニウム粉末、酸化マグネシウム粉末、水酸化アルミニウム粉末、窒化ホウ素粉末、窒化アルミニウム粉末、酸化ケイ素粉末、炭化ケイ素粉末、ダイヤモンド粉末またはこれらの2種以上の組み合わせである請求項1〜5のいずれか1項に記載の熱伝導性シリコーンゴム複合シート。
- 前記(b)成分の硬化剤がヒドロシリル化反応による付加反応型の硬化剤であり、且つ、前記(d)成分のケイ素化合物系接着性付与剤が、ビニル基、Si−H基またはこれらの両方とを有し、かつエポキシ基、アルコキシ基またはこれらの両方とを有する請求項1〜6のいずれか1項に記載の熱伝導性シリコーンゴム複合シート。
- 前記(b)成分の硬化剤が有機過酸化物であり、且つ、前記(d)成分のケイ素化合物系接着性付与剤が、メチル基、ビニル基またはこれらの両方とを有し、かつエポキシ基、アルコキシ基またはこれらの両方とを有する請求項1〜6のいずれか1項に記載の熱伝導性シリコーンゴム複合シート。
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