GB2080378A - Thermal Barrier Construction Assembly and Method of Making - Google Patents
Thermal Barrier Construction Assembly and Method of Making Download PDFInfo
- Publication number
- GB2080378A GB2080378A GB8120841A GB8120841A GB2080378A GB 2080378 A GB2080378 A GB 2080378A GB 8120841 A GB8120841 A GB 8120841A GB 8120841 A GB8120841 A GB 8120841A GB 2080378 A GB2080378 A GB 2080378A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- silicone rubber
- monovalent hydrocarbon
- insulating member
- thermal insulating
- 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.)
- Withdrawn
Links
- 230000004888 barrier function Effects 0.000 title claims abstract description 41
- 238000010276 construction Methods 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 73
- 239000004945 silicone rubber Substances 0.000 claims abstract description 71
- 229910052751 metal Inorganic materials 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 54
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims description 72
- -1 polysiloxane Polymers 0.000 claims description 61
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 40
- 239000004215 Carbon black (E152) Substances 0.000 claims description 33
- 229930195733 hydrocarbon Natural products 0.000 claims description 33
- 239000000945 filler Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 18
- 229920005645 diorganopolysiloxane polymer Polymers 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 9
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 9
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052697 platinum Inorganic materials 0.000 claims description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 125000001931 aliphatic group Chemical group 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 239000004614 Process Aid Substances 0.000 claims description 3
- 239000011256 inorganic filler Substances 0.000 claims description 3
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 3
- 229910010272 inorganic material Inorganic materials 0.000 claims description 3
- 229920006136 organohydrogenpolysiloxane Polymers 0.000 claims description 3
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 claims description 2
- DZKBJRBCLDHGOV-UHFFFAOYSA-N [SiH3][N] Chemical compound [SiH3][N] DZKBJRBCLDHGOV-UHFFFAOYSA-N 0.000 claims description 2
- 125000003342 alkenyl group Chemical group 0.000 claims description 2
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 125000004966 cyanoalkyl group Chemical group 0.000 claims description 2
- 125000000392 cycloalkenyl group Chemical group 0.000 claims description 2
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000001188 haloalkyl group Chemical group 0.000 claims description 2
- 125000003106 haloaryl group Chemical group 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 150000002484 inorganic compounds Chemical class 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 229910017464 nitrogen compound Inorganic materials 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 125000000962 organic group Chemical group 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- ORGHESHFQPYLAO-UHFFFAOYSA-N vinyl radical Chemical compound C=[CH] ORGHESHFQPYLAO-UHFFFAOYSA-N 0.000 claims 1
- 229920002631 room-temperature vulcanizate silicone Polymers 0.000 description 19
- 238000001125 extrusion Methods 0.000 description 18
- 229920003023 plastic Polymers 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 229920001577 copolymer Polymers 0.000 description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 description 5
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 5
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 150000003254 radicals Chemical class 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000010070 extrusion (rubber) Methods 0.000 description 3
- 229910021485 fumed silica Inorganic materials 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical class C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 150000005840 aryl radicals Chemical class 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- WZJUBBHODHNQPW-UHFFFAOYSA-N 2,4,6,8-tetramethyl-1,3,5,7,2$l^{3},4$l^{3},6$l^{3},8$l^{3}-tetraoxatetrasilocane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O1 WZJUBBHODHNQPW-UHFFFAOYSA-N 0.000 description 1
- VLEHKYDBUSECFA-UHFFFAOYSA-N 2,4-dichloro-1-[(2,4-dichlorophenyl)methylperoxymethyl]benzene Chemical compound ClC1=CC(Cl)=CC=C1COOCC1=CC=C(Cl)C=C1Cl VLEHKYDBUSECFA-UHFFFAOYSA-N 0.000 description 1
- KXCPKXUNEQYGLM-UHFFFAOYSA-N 2,5-dichloro-5-[(1,4-dichlorocyclohexa-2,4-dien-1-yl)methylperoxymethyl]cyclohexa-1,3-diene Chemical compound C1=CC(Cl)=CCC1(Cl)COOCC1(Cl)C=CC(Cl)=CC1 KXCPKXUNEQYGLM-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
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- MMEDJBFVJUFIDD-UHFFFAOYSA-N 2-[2-(carboxymethyl)phenyl]acetic acid Chemical compound OC(=O)CC1=CC=CC=C1CC(O)=O MMEDJBFVJUFIDD-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- HAWWRTMQSMZMDQ-UHFFFAOYSA-N C1(=CCCCC1)[Pb] Chemical compound C1(=CCCCC1)[Pb] HAWWRTMQSMZMDQ-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 244000027321 Lychnis chalcedonica Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910004674 SiO0.5 Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- YTEISYFNYGDBRV-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)oxy-dimethylsilyl]oxy-dimethylsilicon Chemical compound C[Si](C)O[Si](C)(C)O[Si](C)C YTEISYFNYGDBRV-UHFFFAOYSA-N 0.000 description 1
- MYWSTAZHXFDYSN-UHFFFAOYSA-L [O-]C=O.[O-]C=O.C=1C=CC=CC=1[Pb+2]C1=CC=CC=C1 Chemical compound [O-]C=O.[O-]C=O.C=1C=CC=CC=1[Pb+2]C1=CC=CC=C1 MYWSTAZHXFDYSN-UHFFFAOYSA-L 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- NBJODVYWAQLZOC-UHFFFAOYSA-L [dibutyl(octanoyloxy)stannyl] octanoate Chemical compound CCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCC NBJODVYWAQLZOC-UHFFFAOYSA-L 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- CEYLPYBDQDCTPB-UHFFFAOYSA-L butanedioate;lead(2+) Chemical compound [Pb+2].[O-]C(=O)CCC([O-])=O CEYLPYBDQDCTPB-UHFFFAOYSA-L 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001734 carboxylic acid salts Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- RPBPCPJJHKASGQ-UHFFFAOYSA-K chromium(3+);octanoate Chemical compound [Cr+3].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O.CCCCCCCC([O-])=O RPBPCPJJHKASGQ-UHFFFAOYSA-K 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000008602 contraction Effects 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
- 239000012969 di-tertiary-butyl peroxide Substances 0.000 description 1
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- SRXOCFMDUSFFAK-UHFFFAOYSA-N dimethyl peroxide Chemical class COOC SRXOCFMDUSFFAK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- PYGSKMBEVAICCR-UHFFFAOYSA-N hexa-1,5-diene Chemical group C=CCCC=C PYGSKMBEVAICCR-UHFFFAOYSA-N 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- DSSXKBBEJCDMBT-UHFFFAOYSA-M lead(2+);octanoate Chemical compound [Pb+2].CCCCCCCC([O-])=O DSSXKBBEJCDMBT-UHFFFAOYSA-M 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001843 polymethylhydrosiloxane Chemical group 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 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
- TWRYZRQZQIBEIE-UHFFFAOYSA-N tetramethoxystannane Chemical compound [Sn+4].[O-]C.[O-]C.[O-]C.[O-]C TWRYZRQZQIBEIE-UHFFFAOYSA-N 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- GLAUZTOWUMJVND-UHFFFAOYSA-M tricyclohexylstannyl prop-2-enoate Chemical compound C1CCCCC1[Sn](C1CCCCC1)(OC(=O)C=C)C1CCCCC1 GLAUZTOWUMJVND-UHFFFAOYSA-M 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/04—Wing frames not characterised by the manner of movement
- E06B3/263—Frames with special provision for insulation
- E06B3/267—Frames with special provision for insulation with insulating elements formed in situ
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/04—Wing frames not characterised by the manner of movement
- E06B3/263—Frames with special provision for insulation
- E06B3/26301—Frames with special provision for insulation with prefabricated insulating strips between two metal section members
- E06B3/26303—Frames with special provision for insulation with prefabricated insulating strips between two metal section members with thin strips, e.g. defining a hollow space between the metal section members
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/04—Wing frames not characterised by the manner of movement
- E06B3/263—Frames with special provision for insulation
- E06B2003/26349—Details of insulating strips
- E06B2003/26369—Specific material characteristics
- E06B2003/2637—Specific material characteristics reinforced
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Door And Window Frames Mounted To Openings (AREA)
- Wing Frames And Configurations (AREA)
- Rod-Shaped Construction Members (AREA)
- Thermal Insulation (AREA)
Abstract
A thermal barrier construction assembly and method of fabricating the assembly involving two metal members 2, 3 joined together by a thermal break member 4 formed of a silicone elastomer having a tear resistance of at least 7.143 kg/cm. (40 lb/in). The preferred silicone elastomers are two-component room temperature vulcanizable addition- cured silicone rubbers and two- component heat curable silicone rubbers. In one method of fabricating the assembly, the silicone member is preformed and slidably inserted for interconnecting the metal members; alternatively, a metal member having three interconnecting channels is preformed, the curable silicone rubber is inserted into the channels, the silicone rubber is cured, and the bottom part of the middle channel is removed resulting in the thermal barrier construction assembly. <IMAGE>
Description
SPECIFICATION
Thermal Barrier Construction Assembly and Method of Making
The present invention relates to unitary construction thermal barrier assemblies, commonly referred to as thermal barrier extrusions, which can be employed in the construction of building wall mullions, windows, doors, frames therefor, and the like; and, more particularly, to improved assemblies and improved materials and methods used in the manufacture thereof.
Insulating materials are well known to the construction art and are used wherever thermal transfer through a structural element is to be restricted. In wall mullion, window and door construction applications, it is well known to provide such elements which are compositely formed and include an insulating material interposed between two metallic structural members. Such composite structural elements, whether mullions, frames or sashes, are necessary to prevent heat escape from the interior of the building to the exterior thereof through the structural elements. They are also necessary to assist in maintaining sufficiently high surface temperatures on the interior members for preventing condensation from forming thereon.
The prior art reveals a structural element with thermal barrier means having a elongated thermal insulating plastic locking member with protrusions which interlock in elongated channel-like tracks of two elongated metal members to form a rigid unitary member. Various thermoplastic compounds have been used for the plastic locking member, such as polyvinyl chloride, polypropylene and polyurethanes.
In one particular embodiment, the channel-like tracks of the two elongated metal members and the two protruding portions of the plastic member have the cross-sectional shape of a Maltese cross.
Various methods have been developed to manufacture thermal barrier construction elements. In one method, a metal element, having a generally U-shaped channel, is filled with a flowing resinous insulating composition. The resinous composition is then cured and a portion of the metal member forming the base of the channel is removed by milling, resulting in a unitary thermal break construction element.
In another prior art method, two metal members, preferably of aluminum, each possessing a Cshaped channel-like track, are extruded in a customary manner. Then, a rigid plastic member is formed into a shape which includes two spaced protruding portions which will match and fit into the channellike tracks of the two metal members. The protruding portions of the plastic member are then slid into the channel-like tracks of the two metal elements for thereby forming a rigid unit comprising two spaced heat conductive metal members and a rigid plastic member tightly interlocked with both members to as to provide both a mechanical connection and an intermediate thermal barrier.In a modification of the above approach, those portions of the channel-like tracks (of the two metal members) which project out from the metal members and surround the protruding portions of the thermoplastic element are suitably patterned, crimped or deformed, so that a tighter mechanical connection between the thermoplastic member and the metal member is possible.
The prior art also reveals another method of manufacturing a thermal break construction element which employs an extruded metal member having a slidably removable metal interior section. The interior section of the extruded metal member is removed resulting in separate spaced metal members which are maintained in substantially the same relationship they had prior to being separated. A plastic material is inserted between the spaced metal members as the metal interior section is being removed for thereby rejoining the metal members together to form a unitary thermal break.
Up to the present time the prior art has called for the use of various plastics as the thermal break material in thermal barrier constructions. Such materials, however, have some drawbacks. Hard rigid plastics such as polyesters, polyurethanes and epoxies, while possessing high integrity for use as a thermal break material in thermal barrier constructions, are brittle, especially under impact and low temperature conditions which can occur before assembly. Preformed, organic elastomeric plastics, while not encountering any impact problem when used as a thermal break material in thermal barrier constructions, do not have sufficiently long life, are difficult to install at low temperatures, and tend to harden or embrittle over a period less than the life of the building.
The instant invention relates to an improved thermal break or thermal barrier construction assembly comprising two metal memters which are rigidly connected together by a cured silicone rubber locking member. In the present invention, various cured silicone rubbers are used as thermal break materials in the manufacture of thermal barrier construction assemblies. The silicone rubbers include two-component silicone rubber compounds which are curable at room temperature by the addition of a curing agent and two-component silicone rubber compounds which are thermally curable.
The two-component curable silicone rubbers useful as thermal break materials in accordance with the present invention are those possessing a tear resistance of at least 40 Ib/in. (7.143 Kg/cm).
The silicone rubbers of this invention have a considerable advantage over the elastomers previously used as insulating materials in thermal break construction assemblies. They can be applied and cured with fewer steps than, for example, liquid applied urethanes. The silicone rubbers of this invention can tolerate variance in temperature with greater ease than the prior art products while maintaining their structural and thermal barrier characteristics. Furthermore, they experience no change in these characteristics due to aging or due to the distortions to which they are subjected as a result of their contact with metal undergoing thermal changes such as expansion and contraction. The silicone rubbers of this invention are also resistant to extreme heat and fire, and will yield low levels of smoke when subjected to fire.Such properties are an important factor in the selection of construction materials to minimize hazards attributable to the flammability of and the emission of smoke from construction elements.
The invention in further detail of that which is believed to be novel will be clear from the following description and claims taken with the accompanying drawings, wherein:
Figure 1 represents a fragmentary cross-sectional view of a unitary construction thermal barrier assembly which consists of two metal channeled members mechanically joined by an interposed cured two-component silicone rubber composition containing a longitudinally extending reinforcing element; and
Figure 2 represents a fragmentary cross-sectional view of a metal member having three interconnected channels wherein the recesses are filled with a cured two-component silicone rubber composition and wherein a section of the metal member is removable by machining.
Referring to the drawing, in Figure 1 there is illustrated a form of an improved unitary
construction assembly having a thermal barrier or break between opposed metal members therein.
More specifically, and as illustrated, the unitary construction assembly comprises two elongated,
spaced metal members 2 and 3 joined by a relatively rigid thermal break member 4 formed of a cured
silicone rubber composition. The thermal break member 4 is a single elongated strip-like body of
unitary construction having oppositely extending elongated protrusions 7 and 8. The two metal
members 2 and 3, are formed to include elongated channel-like tracks 5 and 6 which are C-shaped in cross-section and have opposed parallel openings preferably being mirror images of each other.
Additionally, the tracks include recesses 9 and 10 which correspond in size and shape to the protrusions 7 and 8 of the thermal break member 4. The C-shaped elongated channel-like tracks each consist of upper and lower wall sections 1 1 and 12 which cooperate with rim sections 13 and 1 4 to define elongated rectangular recesses 9 and 10, which in the finished assembly receive the protrusions 7 and 8 of the element 4.
Alternatively, the elongated channel-like tracks 5 and 6 can have a tapered cross-section, not shown, with the narrowed portion thereof containing the openings for receiving the thermal break member. The inner walls of such tapered channel tracks can include wedge-shaped locking ribs. In such a modification, the protrusions 7 and 8 of the silicone rubber barrier member 4 are also tapered in cross-section to correspond in size and form to the tapered channel-like tracks.
In a modified structure, also not shown, the upper and lower wall sections 1 1 and 12 of the Cshaped channel-like tracks can be bent inwardly to provide a more effective mechanical grip by the channel-like tracks on the silicone rubber thermal break member.
In one method of manufacturing the thermal barrier construction assembly in which the thermal barrier material is a silicone rubber, a metal member of the type used in the construction of wall
mullions, frames and sashes, is formed by extrusion in a manner well known in the art. The metal extrusion is preferably made of aluminum or an aluminum alloy. Each such extrusion, as illustrated in
Figure 2, is similar in design to the two metal extrusions illustrated in Figure 1, the only distinction
being that it is extruded as a single unit to include a metal web or interconnection between rims 14. In this type of extrusion, the member further incluques an additional elongated center channel between
rims 1 3 and 14, having a recess 1 5 which interconnects with recesses 9 and 10 of the C-shaped channel-like tracks 5 and 6.
After the metal extrusion is formed, the uncured silicone rubber composition is poured, pumped
or otherwise inserted into the recesses 9, 10 and 1 5 of the interconnected elongated channel-like
tracks. The silicone rubber composition is then cured and hardened in a manner depending upon
whether it is of a type curable at room temperature or thermally curable. Once the silicone rubber
composition is cured and hardened, that part of the metal extrusion extending between the outer rims
14, and more specifically between the spaced dotted lines in Figure 2, is milled out or otherwise
removed. In the resultant assembly, only the cured silicone material extends between the tracks 5 and
6 and constitutes a rigid thermal break member in the assembly.
In another method for manufacturing a thermal barrier construction assembly in which the thermal barrier is formed of a silicone rubber, two metal construction members, one corresponding to member 2 and the other corresponding to member 3 in the drawing, are formed by extrusion in the customary manner. The metal extrusions are preferably made of aluminum or an aluminum alloy. The metal extrusions each include a C-shaped channel-like track 5 and 6 in which the openings of such channels run parallel to each other, the one extruded member preferably being the mirror image of the opposing extruded member.
The silicone rubber composition, which is to be used as the thermal break member, is then formed and cured by extrusion in a manner well known in the art into a shape such that the silicone rubber thermal break member possesses two protrusions 7 and 8, which match in size and shape the channel-like tracks of the two metal extrusions. In one embodiment, the cured silicone rubber extrusion can be integrally reinforced with any suitable high strength material reinforcing element 16, which
extends longitudinally through the thermal break member 4 to increase the rigidity and strength of that member. For example, reinforcement element 16 can be an elongated aluminum strip centrally disposed within and extending the length of the cured silicone rubber break member.Once the silicone rubber extrusion is formed and cured, it is joined with the two metal extrusions by slidably inserting or zippering the two protruding portions 7 and 8 of the cured silicone rubber extrusion 4 into the Cshaped channel-like tracks 5 and 6 of the two metal extrusions, resulting in a rigid thermal barrier construction assembly.
The channel-like track of the above-identified metal extrusions and the corresponding thermal break member may be of any suitable cross-sectional configuration to insure an interlocking relationship therebetween. The prior art shows many suitable cross-sectional shapes, designs, patterns and configurations for the members of these barriers, and one skilled in the art can readily adapt any of these prior art cross-sectional shapes to the extrusion tracks and thermal break members of this invention. Furthermore, the inner surfaces of the various channel-like tracks, which are in contact with the thermal break material, may be patterned, e.g., spiked, perforated, ribbed, roughened and the like, to promote and secure the bond between the thermal break member and the metal extrusions.
The two-component addition-cured room temperature vulcanizable (RTV) silicone rubber compositions which can be employed in the present invention are well known in the art. U.S. Patents
Nos. 3,436,366 and 3,847,848 provide a detailed description of suitable silicone rubber compositions as well as methods of preparation. U.S.Patent No. 3,436,366, the disclosure of which is hereby incorporated by reference, discloses two-component room temperature addition-cured vulcanizable silicone rubber compositions which comprise by weight,
(a) 100 parts of a liquid vinyl chainstopped polysiloxane having the formula:
where R and R' are monovalent hydrocarbon radicals free of aliphatic unsaturation, with at least 50 mole percent of the R' groups being methyl and where n has a value sufficient to provide viscosity of from about 50,000 to 750,000 centistokes at 250C., preferably from about 50,000 to 1 50,000 inclusive;;
(b) from 20 to 50 parts of an organopolysiloxane copolymer comprising (R")3-SiO05 units and
SiO2 units where R" is a member selected from the class consisting of vinyl radicals and monovalent hydrocarbon radicals free of aliphatic unsaturation, where the ratio of (R")3-SiO0.5 units to SiO2 units is from about 0.5:1 to 1 :1, and where from about 2.5 to 10 mole percent of the silicon atoms contain silicon-bonded vinyl groups;
(c) from 0 to 200 parts of a finely divided inorganic filler which is non-reinforcing for silicone elastomers;
(d) a platinum catalyst;
(e) an amount of a liquid organohydrogenpolysiloxane having the formula::
and sufficient to provide from about 0.5 to 1.0 silicon-bonded hydrogen atom per silicon-bonded vinyl group in the composition, where R is as previously defined, a has a value of from 1.00 to 2.10, b has a value of from about 0.1 to 1.0, and the sum of a plus b is from about 2.00 to 2.67, there being at least two silicon-bonded hydrogen atoms per molecule.
Illustrations of the vinyl chainstopped polysiloxane of component (a) of the above addition-cured
RTV silicone rubber compositions include a dimethylvinyl chainstopped organopolysiloxane having a viscosity of 550,000 centistokes at 250C. and a diphenylvinyl chainstopped copolymer of diphenylsiloxane units and dimethylsiloxane units having a viscosity of about 1 50,000 centistokes at 250C.
An illustration of the organopolysiloxane copolymer of component (b) of the above addition-cured
RTV silicone rubber compositions is a copolymer of trimethylsiloxane units, SiO2 units and methylvinylsiloxane units in which about 0.8 trimethylsiloxane units are found for every SiO2 unit and about 7.0 mole percent of the silicon atoms was present as methylvinylsiloxane units, the remaining silicon atoms being present as a portion of a trimethylsiloxane unit or an SiO2 unit.
The finely divided inorganic fillers which comprise component (c) of the above addition-cured
RTV silicone rubber compositions can include almost any type of finely divided inorganic material, such as ground quartz, titanium dioixide, calcium silicate, ferric oxide, chromic oxide, glass fibers, calcium carbonate, carbon black, lithopone, and the like.
The platinum catalyst of component (d) employed in the present addition-cured RTV silicone rubber compositions in accordance with the invention include those which are effective for catalyzing
the reaction between silicon-bonded hydrogen groups and silicon-bonded vinyl groups. These materials include finely divided elemental platinum catalysts, the chloroplatinic acid catalysts, the platinum hydrocarbon complexes and the platinum alcoholate catalysts. These catalysts are well known in the prior art. The catalyst is used in an amount sufficient to provide from about 10-3 to 1 O-E gram atoms of platinum per mole of silicon-bonded vinyl groups in the composition.
The organohydrogenpolysiloxane, which is component (e), in the above addition-cured RTV
silicone rubber compositions can be a 1 ,3,5,7-tetramethylcyclotetrasiloxane, a dimethylhydrogen
chainstopped dimethylpolysiloxane containing from 2 to 3 silicon atoms per molecule, or a copolymer
of dimethylsiloxane units, methylhydrogensiloxane units, and trimethylsiloxane units and which
contains from 2 to 5 or 10 or more silicon atoms per molecule.
The above addition-cured RTV silicone rubbers are prepared by mixing in a suitable fashion all of
the components (a), (b), (c), (d) and (e) described above and maintaining the mixture at the temperature
at which it is to be cured. While the silicone rubbers of this invention can be prepared by merely mixing
the various components together in any desired fashion, it is often found convenient to prepare these
compositions in two separate portions or packages which are combined at the time the compositions
are to converted to the solid, cured, elastic state.
Those of the above-identified addition-cured RTV silicone rubber compositions which have a tear
resistance of at least 40 Ib/in (7.143 kg/cm) are used as the thermal barrier member in the thermal barrier
construction assembly of this invention. These cured silicone rubber compositions can be employed in
either of the above-described methods for manufacturing the thermal barrier construction assembly.
Such compositions have desirable self-leveling characteristics which assure void-free molds and
precise reproduction of finite model details.
The General Electric Company manufactures the dimethyl forms of the above-identified addition
cured RTV silicone rubber compositions which can be used in the thermal barrier construction element
of this invention and sells them under the trademarks 2-Component RTV-630, 2-Component RTV-631,
2-Component RTV-632, 2-Component RTV-662, 2-Component RTV-664 and 2-Component RTV-668.
U.S. Patent No. 3,847,848, the disclosure of which is also hereby incorporated by reference,
discloses another class of two-component room temperature addition-cured vulcanizable silicone
rubber compositions wherein the first component comprises:
(a) a base linear fluid diorganopolysiloxane containing terminal silicon-bonded hydroxy groups
and having a viscosity of 1,000 to 10,000,000 centipose at 250C., where the organic groups of said diorganopolysiloxane are selected from the class consisting of monovalent hydrocarbon radicals,
halogenated monovalent hydrocarbon radicals and cyanoalkyl radicals, and
(b) from 5% to 300% by weight, based on the weight of the base linear diorganopolysiloxane, of a treated silica filler product.
The silica filler of these addition-cured RTV compositions is prepared by (i) contacting 100 parts of silica filler, having a surface area of at least 50 square meters per gram and containing from .2% to
2% by weight of moieties selected from the class consisting of hydroxyl groups, water and mixtures thereof, with
(1) from 1/2 part to 5 parts of a hydroxyl amine having the formula:
(2) from 2 to 25 parts of a cyclic siloxane of the formula:
and
(3) from 1 to 20 parts of a silyl nitrogen compound of the formula: (C) (R4Si)aX wherein the above additives are simultaneously contacted with said filler at a temperature in the range of 1000 to 1 800C. and (ii) removing residual amounts of said additives from the filler. In the foregoing silica filler, R' is selected from the class consisting of monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals; R2, R3 and R4 are all selected from the class consisting of hydrogen, monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals; n varies from 3 to 4; a is a whole number that varies from 1 to 2; X is selected from the class consisting of-NR5Y, -0NH52, and
where R5 is selected from monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals and Y is selected from hydrogen and R5 radicals.
The second component of the foregoing two-part RTV silicone rubber compositions comprises from 1 % to 15% by weight, based on the weight of the base linear diorganopolysiloxane, of a silicate selected from the group consisting of (I) a monomeric organosilicate corresponding to the general formula
(D) (R50)3SiR5 where R5 is a radical selected from the class consisting of monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals and cyanoalkyl radicals and R6 is selected from the class consisting of alkyl, haloalkyl, aryl, haloaryl, alkenyl, cycloalkyl, cycloalkenyl, cyanoalkyl, alkoxy and acyloxy radicals and (II) a liquid partial hydrolysis product of the aforementioned organosilicate.The second component of the foregoing addition-cured RTV silicone rubber compositions also contains from .1% to 5% by weight, based on the weight of the linear diorganopolysiloxane, of a catalyst which is a carboxylic acid salt, alkoxide, hydroxide or oxide of a metal ranging from lead to manganese, inclusive, in the electromotive series of metals which includes lead, tin, zirconium, antimony, iron, cadmium, barium, calcium, titanium, bismuth and manganese, with tin being the most preferred metal catalyst.
In addition to the above ingredients, there is also utilized in the first component of the foregoing addition-cured RTV silicone rubber compositions, a tert-alkoxypolysiloxane, having a viscosity of from
1,000 to 10,000 centipose at 250C., as disclosed in U.S. Patent No. 3,438,930, which patent is hereby incorporated by reference, and a first viscosity depressant and deep section curing agent of the formula:
having a viscosity of from 10 to 100 centistokes at 250C., and a second viscosity depressant fluid of the formula:
having a viscosity of from 5 to 10,000 centipose at250C., where R7 is a radical selected from the class consisting of monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals and cyanoalkyl radicals; p is a whole number that varies from 2 to 46; R8 is a radical selected from the class consisting of alkyl radicals, halogenated alkyl radicals, aryl radicals, halogenated aryl radicals and cyanoalkyl radicals of up to 8 carbon atoms; and S is a whole number that varies from 2 to 700.
The tert-alkoxy polysiloxane fluid is present at a concentration of about 5% to 50% by weight based on the base linear diorganopolysiloxane. The first viscosity depressant (Formula E above) is present at a concentration of about 0.5% to 5% by weight based on the base linear diorganopolysiloxane. The second viscosity depressant (Formula F above) is present at a concentration of 0% to 70% by weight based on the base linear diorganopolysiloxane.
The preferred organopolysiloxanes of (a) in the first component of the foregoing addition-cured
RTV silicone rubber compositions may be represented by the average unit formula:
where R is selected from monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals and the value of m may vary from 1.99 to 2. The average unit formula includes organopolysiloxanes having terminal groups other than hydroxy such as monofunctional and trifunctional terminal groups. It is preferred that the terminal groups of hydroxy and the monofunctional and trifunctional groups be kept to a minimum.
One specific example of the foregoing addition-cured RTV silicone rubber compositions would be an organopolysiloxane consisting of 70 parts of silanol-terminated dimethylpolysiloxane of 30,000 centipoise at 250C.; 30 parts of partially t-butoxy and silanol-terminated polydimethylsiloxane having an
OH to t-butoxy ratio of 2.7 and a viscosity of 3,000 centipoise; 27 parts of a trimethylsilyl-terminated polydimethylsiloxane having a viscosity of 20 centipoise at 250C. and 1.8 parts of a silanol-terminated polydimethylsiloxane having a silanol content of 6.8% by weight and a viscosity of 15 centipoise at 250C.
With respect to the treated filler in the foregoing addition-cured RTV silicone rubber compositions, the initial treated filler may comprise all fumed silica or all precipitated silica or, in the alternative, there may be present in the treated filler 5% to 95% by weight of fumed silica with the rest of the treated filler being precipitated silica. The silica fillers employed in this invention generally have a surface area that may vary anywhere from at least 50 square meters per gram to as high as 300 to 500 square meters per gram. One example of such silica fillers consists of 90 parts of fumed silica having a surface area of 200 sq. meters per gram and 10 parts of a precipitated silica filler having a surface area of 300 sq. meters per gram.
The most preferred compound to treat the silica filler within the scope of Formula (A) is hydroxyethylamine. The most preferred compound to treat the silica filler within the scope of Formula (B) is hexamethyltrisiloxane and the most preferred compound within the scope of Formula (C) is hexamethyldisilazane.
In addition to the treated filler in the foregoing addition-cured RTV silicone rubber compositions there may be used at a concentration of from 5% to 100%, based on the weight of the base linear diorganopolysiloxane fluid, an untreated filler such as titanium dioxide, lithopone, zinc oxide, zirconium silicate, glass fibers. magnesium oxide, zirconium oxide, crushed quartz, asbestos, graphite, synthetic fibers, and the like.
In the second component of the foregoing addition-cured two-part RTV silicone rubber compositions examples of the silicates which can be employed include n-propyl silicate, ethyl silicate and polypropyl silicate. Examples of the catalysts present in the second-component which are useful include zinc-napthenate, cobalt-napthenate and lead-napthenate, zinc-octoate, cobalt-octoate, lead-octoate, chromium-octoate and tin-octoate, carbomethyloxyphenyl tin, cyclohexenyl lead triactotinate, dibutyl tin dilaurate, dibutyl tin dioctoate, diphenyl lead diformate, diallyl lead di-2hexenoate, tricyclohexyl tin acrylate, tristearyl lead succinate, dibutyl tin dimethyoxide, tin tetramethoxide, and the like.
In the preferred embodiment, the second-component of the foregoing addition-cured two-part
RTV silicone rubber compositions consists of a mixture of monomeric organosilicate, a metal catalyst and an aqueous solution of an alochol such as a 2% by weight aqueous solution of N,N-propyl alcohol, where the amount of the aqueous solution of alcohol may vary at a concentration of from 0.1% to 10% by weight based on the weight of the monomeric organosilicate.
The foregoing addition-cured silicone rubber compositions of this invention are prepared by merely mixing the two above-identified components together in any desired fashion. Those of the above-identified addition-cured RTV silicone rubber compositions which have a tear resistance of at least 40 Ib/in., (7.143 kg/cm) are used as the thermal barrier member in the thermal barrier construction assembly of this invention. These cured silicone rubber compositions can be employed in either of the above-described methods for manufacturing the thermal barrier construction assembly.
Such compositions have desirable self-leveling characteristics which assure void-free molds and precise reproduction of finite details.
The General Electric Company manufactures a form of the above-identified silicone rubber compositions which can be used in the thermal barrier construction assembly of this invention and sells it under the trademark 2-Component RTV-700.
Heat cured silicone rubbers useful in the present invention are disclosed in U.S. Patent No.
3,730,932, the disclosure of which is hereby incorporated by reference. The two-component heat cured silicone rubber compositions of U.S. Patent No. 3,730,932 comprise:
(a) from 82% to 99.65% by weight of an organopolysiloxane polymer of the formula:
where R is selected from monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon
radicals, and a varies from -1.95 to 2.01; having a molecular weight in the range of 100,000 to 2,000,000 and a viscosity of 100,000 to 100,000,000 centipoise at 250 C., (b) from 20% to 60% by weight, based on the weight of the organopolysiloxane, of a finely
divided filler material of the highly reinforcing type consisting of inorganic compounds,
(c) from 1% to 25% by weight, based on the weight of the organopolysiloxane, of a process aid
for preventing the polymer and the filler mixture from structuring prior to curing, of the formula: :
where R is a member selected from the class consisting of methyl and phenyl, X is a member selected from the class consisting of H, -NH2 or --OR', where R' is methyl or ethyl, n has a value of from 2 to 4 inclusive and b is a whole number equal to from 0 to 10 inclusive.
The organopolysiloxanes of Formula 1 in the heat cured silicone rubber compositions can be copolymers containing two or more different diorganosiloxane units and copolymers of dimethylsiloxane units and methylphenylsiloxane units; or copolymers of methylphenylsiloxane units, diphenylsiloxane units, dimethylsiloxane units and methylvinylsiloxane units, as well as copolymers of dimethylsiloxane units, methylvinylsiloxane units and diphenylsiloxane units.
Usually, a small amount of monofunctional compounds are added to function as end-blockers so as to regulate the chain length of the polymers. A preferred compound for use as the chainstopper has the formula:
An example of the organopolysiloxane of component (a) in the heat cured silicon rubber is represented by the formula:
The filler material of component (b) of the heat cured silicone rubber compositions is characterized by a particle diameter of less than 500 millimicrons and by a surface area of greater than 50 square meters per gram. Examples of a suitable filler material include titanium dioxide, iron oxide, aluminum oxide, diatomaceous earth, calcium carbonate, and quartz.
The process aid of component (c) in the heat cured silicon rubber compositions can also be selected from the group consisting of dihydrocarbon-substituted oils and hydroxylated organopolysiloxanes. An example of the above is an alkoxy-stopped dimethyldiphenylsiloxane.
The curing of the above heat cured silicone rubber compositions is effected with chemical curing agents and any of the conventional curing agents can be employed. The preferred curing agents are organic peroxides conventionally used to cure silicone elastomers. Especially suitable are the dimethyl peroxides which may have the structural formulas:
wherein R represents the same alkyl group throughout or alkyl groups of two or more different types
and n is zero or a larger integer.
Illustrations of the specific preferred peroxide curing agents for the heat cured silicone rubber
compositions are di-tertiary-butyl peroxide, tertiary-butyl-triethylmethyl peroxide, tertiary-butyl
tertiary-butyl-tertiary-triphenyl peroxide and a ditertiary alkyl peroxide such as dicumyl peroxide. Other
suitable agents which effect curing through saturated as well as unsaturated hydrocarbon groups on
the silicon chain are aryl peroxides which include benzoyl peroxides, mixed alkyl-aryl peroxides, which
include tertiary-butyl perbenzoate, chloroalkyl peroxides such as 1,4-dichlorobenzyl peroxide, 2,4- dichlorobenzyl peroxide, benzoyl peroxide, and the like. Generally,0.1 to 8% of said peroxide by weight of the polydiorganosiloxane polymer is used to cure the silicone rubber composition.
The above heat curable silicone rubbers can be converted to the solid elastomeric state at
temperatures in the range of from 800 C. to 6500C., depending upon the nature of the curing agent,
duration of the cure, amount and type of filler, and the like. The compositions can be cured using hot
air, steam, or ovens. While the cured silicone rubber compositions of this invention can be prepared by
merely mixing the various components together in any desired fashion and supplying the necessary
heat, it is often found convenient to prepare these compositions in two separate packages which are
combined at the time the compositions are to be converted by heat to the solid, cured, elastic state.
Those of the above-identified heat cured silicone rubber compositions which have a tear
resistance of at least 40 Ib/in., (7.143 kg/cm) are used as the thermal barrier member in the thermal barrier construction assembly of this invention. These heat cured silicon rubber compositions can be employed in either of the above-described methods for manufacturing the thermal barrier construction assembly. It is preferred that the method of manufacture,.embracing the formation of an elongated cured silicone rubber strip and slidably inserting it between two elongated metal members to form the thermal barrier construction assembly, be employed when using the above-identified heat cured silicone rubber compositions.However, the uncured silicon rubber compositions can be poured, pumped, extruded or otherwise inserted into three interconnected elongated channels of a metal member and cured in situ. Thereafter, the bottom part of the central elongated metal channel is milled out or otherwise removed to form a rigid thermal break construction assembly.
The General Electric Company manufactures a form of the above-identified heat-curable silicone rubber compositions which can be used in the thermal barrier construction element of this invention and sells it under the trademark Blensil Silicone Rubber composed of Blensil 44U and Blensil 88U.
In addition to the specific silicone rubber compositions and examples described above, many other two-component silicone rubber compositions which cure at room temperature with the addition of a curing agent and which possess a tear resistance of at least 40 Ibs/in. (7.143 kg/cm) and many other two-component silicone rubber compositions which cure by heat and which possess a tear resistance of at least 40 Ibs/in., (7.143 kg/cm) can be used as a thermal barrier material in accordance with the present invention.
Claims (12)
1. A thermal insulating member for a thermal barrier construction assembly of the type having a thermal insulating member with protruding portions tightly interlocking a spaced pair of elongated metal members, wherein the thermal insulating member comprises a cured silicone rubber composition having a tear resistance of at least 7.143 kg/cm (40 Ib/in.).
2. A thermal insulating member as claimed in Claim 1, wherein the cured silicone rubber is integrally reinforced with a high-strength element.
3. A thermal insulating member as claimed in Claim 1 or 2, wherein the cured silicone rubber composition is obtained by curing a two-component silicone rubber composition which is curable at room temperature by the addition of a curing agent, or which is heat curable.
4. A thermal insulating member as claimed in Claim 3, wherein the two-component silicone rubber composition which is curable at room temperature comprises by weight:
(a) 100 parts of a liquid vinyl chainstopped polysiloxane having the formula:
where R and R' are monovalent hydrocarbon radicals free of aliphatic unsaturation, with at least 50 mole percent of the R' groups being methyl and where n has a value sufficient to provide a viscosity of from 50,000 to 750,000 centistokes at 250C; (b) from 20 to 50 parts of an organopolysiloxane copolymer comprising (R")3-Si00.5 units and
SiO2 units where R" is a vinyl radical or monovalent hydrocarbon radical free of aliphatic unsaturation, where the ratio of (R")3-Si00 units to SiO2 units is from 0.5:1 to 1::1, and where from 2.5 to 10 mole percent of the silicon atoms contain silicon-bonded vinyl groups;
(c) from 0 to 200 parts of a finely divided inorganic filler which is non-reinforcing for silicone elastomers;
(d) a platinum catalyst;
(e) an amount of a liquid organohydrogenpolysiloxane having the formula:
and sufficient to provide from 0.5 to 1.0 silicon-bonded hydrogen atom per silicon-bonded vinyl group in the composition, where R is as previously defined, a has a value of from 1.00 to 2.10, b has a value of from 0.1 to 1.0, and the sum of a plush is from 2.00 to 2.67, there being at least two silicon-bonded hydrogen atoms per molecule.
5. A thermal insulating member as claimed in Claim 3, wherein the two-component silicone rubber composition which is curable at room temperature comprises:
(a) a base linear fluid diorganopolysiloxane containing terminal silicon-bonded hydroxy groups and having a viscosity of 1,000 to 10,000,000 centipoise at 250C., where the organic groups of said diorganopolysiloxane are monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals or cyanoalkyl radicals;;
(b) from 5 to 300% by weight, based on the weight of the base linear diorganopolysiloxane, of a treated silica filler product prepared by (i) contacting 100 parts of silica filler, having a surface area of at least 50 square meters per gram and containing from 0.2% to 2% by weight of moieties selected from the class consisting of hydroxyl groups, water and mixtures thereof, with
(1) from 1/2 part to 5 parts of a hydroxyl amine having the formula,
(2) from 2 to 25 parts of a cyclic siloxane of the formula
and
(3) from 1 to 20 parts of a silyl nitrogen compound of the formula
wherein the above additives are simultaneously contacted with said filler at a temperature in the range of 1000 to 1800C., and
(ii) removing residual amounts of said additives from the filler; where R' is a monovalent hydrocarbon radical or halogenated monovalent hydrocarbon radical; R2, R3 and R4 are each hydrogen or a monovalent hydrocarbon radical or halogenated monovalent hydrocarbon radical; n is 3 or 4; a is 1 or 2; X -NR5Y, -0NR52, or
where R5 is a monovalent hydrocarbon radical, or halogenated monovalent hydrocarbon radical and Y is hydrogen or R5 radical;;
(c) from 1 to 1 5% by weight, based on the weight of the base linear diorganopolysiloxane, of a silicate, selected from (I) a monomeric organosilicate corresponding to the general formula,
(D) (R50)3SiR6 where R5 is a monovalent hydrocarbon radical, halogenated monovalent hydrocarbon radical or cyanoalkyl radical and R6 is an alkyl, haloalkyl, aryl, haloaryl, alkenyl, cycloalkyl, cycloalkenyl, cyanoalkyl, alkoxy or acyloxy radicals and (II) a liquid partial hydrolysis product of the aforementioned organosilicate; and
(d) from 0.1 to 5% by weight, based on the weight of the base linear diorganopolysiloxane, of a curing catalyst.
6. A thermal insulating member as claimed in Claim 3, wherein the two-component heat curable silicone rubber composition comprises:
(a) from 82 to 99.65% by weight of an organopolysiloxane polymer of the formula:
where R is a monovalent hydrocarbon radical or halogenated monovalent hydrocarbon radical, and a is from 1.95 to 2.01; having a molecular weight in the range of 100,000 to 2,000,000 and a viscosity of 100,000 to 100,000,000 centipoise at 250C; (b) from 20 to 60% by weight, based on the weight of the organopolysiloxane, of a finely divided filler material of the highly reinforcing type consisting of inorganic compounds;
(c) from 1 to 25% by weight, based on the weight of the organopolysiloxane, of a process aid selected from dihydrocarbon-substituted oils, hydroxylated organopolysiloxanes and a compound of the formula:
where R is methyl or phenyl, X is -OH, -NH2 or OR', where R' is methyl or ethyl, n has a value of from 2 to 4 inclusive and b is O to 10 inclusive; and
(d) from 0.1% to 8% by weight, based on the weight of the organopolysiloxane, of a curing catalyst.
7. A member as claimed in Claim 1 and substantially as hereinbefore described with reference to the accompanying drawings.
8. A thermal barrier construction assembly comprising:
(a) a spaced pair of elongated metal members having elongated channel-like tracks with opposed parallel openings; and
(b) an elongated thermal insulating member as claimed in any of Claims 1 to 6 having oppositely protruding portions positioned in said channel-like tracks tightly interlocking said pair of elongated metal members.
9. An assembly as claimed in Claim 8 and substantially as hereinbefore described with reference to the accompanying drawings.
10. A method of fabricating a thermal barrier construction assembly comprising interlocking a spaced pair of channel members with a thermal insulating member, as claimed in any of Claims 1 to 6.
11. A method as claimed in Claim 10 which comprises extruding a metal member having, in cross-section, two C-shaped channels interconnected by a central channel; filling said channels of said member with the silicone rubber in liquid uncured form; hardening said silicone rubber and milling out the bottom part of the central elongated channel.
12. A method as claimed in Claim 10 which comprises extruding two metal members having, in cross-section, C-shaped channels; forming from the cured silicone rubber a thermal insulating member having opposed protrusions corresponding in shape and size to said channels, and inserting said protrusions of said thermal insulating member into said channels.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17168880A | 1980-07-24 | 1980-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2080378A true GB2080378A (en) | 1982-02-03 |
Family
ID=22624759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8120841A Withdrawn GB2080378A (en) | 1980-07-24 | 1981-07-06 | Thermal Barrier Construction Assembly and Method of Making |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5761172A (en) |
| DE (1) | DE3127520A1 (en) |
| FR (1) | FR2487403A1 (en) |
| GB (1) | GB2080378A (en) |
| IT (1) | IT1137609B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463540A (en) * | 1981-09-14 | 1984-08-07 | Alexander J. Gordon | Extrusion for insulated building constructions |
| WO1993021415A1 (en) * | 1992-04-16 | 1993-10-28 | H.B. Fuller Licensing & Financing, Inc. | Improved metal casing with thermal break |
| EP0667439A1 (en) * | 1994-02-12 | 1995-08-16 | Norsk Hydro A/S | Heat-insulating compound profile |
| US5449560A (en) * | 1991-07-05 | 1995-09-12 | Dow Corning S.A. | Composition suitable for glass laminate interlayer and laminate made therefrom |
| GB2339821A (en) * | 1998-07-24 | 2000-02-09 | Puertas Tht S L | Closure comprising a metal door and frame |
| GB2378972A (en) * | 2001-08-20 | 2003-02-26 | Premier Profiles Ltd | Fireproof frame for window or door |
| GB2502286A (en) * | 2012-05-21 | 2013-11-27 | My Four Walls Uk Ltd | Roof panel with wooden skin layer and insulating layer. |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1091735B (en) * | 1955-09-20 | 1960-10-27 | Aluminium Walzwerke Singen | Frame part made of metal |
| US3436366A (en) * | 1965-12-17 | 1969-04-01 | Gen Electric | Silicone potting compositions comprising mixtures of organopolysiloxanes containing vinyl groups |
| US3438930A (en) * | 1967-05-01 | 1969-04-15 | Gen Electric | Alkoxyhydroxy-terminated polydiorganosiloxanes curable at room temperature |
| US3730932A (en) * | 1971-05-17 | 1973-05-01 | Gen Electric | Self-bonding,heat-curable silicone rubber |
| US3847848A (en) * | 1972-12-04 | 1974-11-12 | Gen Electric | Two-part room temperature vulcanizable silicone rubber compositions |
| DE2607779C2 (en) * | 1976-02-26 | 1984-09-06 | Willi 2816 Kirchlinteln Meyer | Metal frame for insertion in existing wooden frames |
| US4067163A (en) * | 1977-03-11 | 1978-01-10 | Hetman Frank W | Thermally insulated and connected window frame members and the method of making the same |
-
1981
- 1981-07-06 GB GB8120841A patent/GB2080378A/en not_active Withdrawn
- 1981-07-10 IT IT8122881A patent/IT1137609B/en active
- 1981-07-11 DE DE19813127520 patent/DE3127520A1/en not_active Withdrawn
- 1981-07-24 FR FR8114470A patent/FR2487403A1/en not_active Withdrawn
- 1981-07-24 JP JP56115415A patent/JPS5761172A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463540A (en) * | 1981-09-14 | 1984-08-07 | Alexander J. Gordon | Extrusion for insulated building constructions |
| US5449560A (en) * | 1991-07-05 | 1995-09-12 | Dow Corning S.A. | Composition suitable for glass laminate interlayer and laminate made therefrom |
| WO1993021415A1 (en) * | 1992-04-16 | 1993-10-28 | H.B. Fuller Licensing & Financing, Inc. | Improved metal casing with thermal break |
| US5391436A (en) * | 1992-04-16 | 1995-02-21 | H. B. Fuller Licensing & Financing, Inc. | Metal casing with polyurethane thermal break |
| EP0667439A1 (en) * | 1994-02-12 | 1995-08-16 | Norsk Hydro A/S | Heat-insulating compound profile |
| GB2339821A (en) * | 1998-07-24 | 2000-02-09 | Puertas Tht S L | Closure comprising a metal door and frame |
| GB2378972A (en) * | 2001-08-20 | 2003-02-26 | Premier Profiles Ltd | Fireproof frame for window or door |
| GB2502286A (en) * | 2012-05-21 | 2013-11-27 | My Four Walls Uk Ltd | Roof panel with wooden skin layer and insulating layer. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5761172A (en) | 1982-04-13 |
| DE3127520A1 (en) | 1982-07-08 |
| IT1137609B (en) | 1986-09-10 |
| FR2487403A1 (en) | 1982-01-29 |
| IT8122881A0 (en) | 1981-07-10 |
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Legal Events
| Date | Code | Title | Description |
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| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |