CN102796381A - Condensation type RTV silicone rubber composition with matte surface, its preparation method and application - Google Patents
Condensation type RTV silicone rubber composition with matte surface, its preparation method and application Download PDFInfo
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- CN102796381A CN102796381A CN2012102927183A CN201210292718A CN102796381A CN 102796381 A CN102796381 A CN 102796381A CN 2012102927183 A CN2012102927183 A CN 2012102927183A CN 201210292718 A CN201210292718 A CN 201210292718A CN 102796381 A CN102796381 A CN 102796381A
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- 239000000203 mixture Substances 0.000 title claims abstract description 73
- 238000009833 condensation Methods 0.000 title claims abstract description 6
- 230000005494 condensation Effects 0.000 title claims abstract description 6
- 238000002360 preparation method Methods 0.000 title claims description 6
- 239000004945 silicone rubber Substances 0.000 title abstract description 16
- 229920002631 room-temperature vulcanizate silicone Polymers 0.000 title abstract 2
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 21
- 229920002545 silicone oil Polymers 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract 2
- 229920001971 elastomer Polymers 0.000 claims description 36
- XQSFXFQDJCDXDT-UHFFFAOYSA-N hydroxysilicon Chemical compound [Si]O XQSFXFQDJCDXDT-UHFFFAOYSA-N 0.000 claims description 23
- 239000003921 oil Substances 0.000 claims description 23
- -1 white lake Chemical compound 0.000 claims description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 17
- 239000004902 Softening Agent Substances 0.000 claims description 16
- 239000006229 carbon black Substances 0.000 claims description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- 238000001259 photo etching Methods 0.000 claims description 12
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 9
- 239000011707 mineral Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 8
- 238000004132 cross linking Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229920000260 silastic Polymers 0.000 claims description 7
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical compound N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 claims description 6
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 6
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 239000011863 silicon-based powder Substances 0.000 claims description 6
- XXZNHVPIQYYRCG-UHFFFAOYSA-N trihydroxy(propoxy)silane Chemical compound CCCO[Si](O)(O)O XXZNHVPIQYYRCG-UHFFFAOYSA-N 0.000 claims description 6
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 5
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- YYLGKUPAFFKGRQ-UHFFFAOYSA-N dimethyldiethoxysilane Chemical compound CCO[Si](C)(C)OCC YYLGKUPAFFKGRQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- ZEMPKEQAKRGZGQ-AAKVHIHISA-N 2,3-bis[[(z)-12-hydroxyoctadec-9-enoyl]oxy]propyl (z)-12-hydroxyoctadec-9-enoate Chemical compound CCCCCCC(O)C\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CC(O)CCCCCC)COC(=O)CCCCCCC\C=C/CC(O)CCCCCC ZEMPKEQAKRGZGQ-AAKVHIHISA-N 0.000 claims description 4
- 239000005639 Lauric acid Substances 0.000 claims description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 4
- 239000002383 tung oil Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims 1
- 239000013522 chelant Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 3
- 238000004382 potting Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 239000004014 plasticizer Substances 0.000 abstract 2
- 239000003431 cross linking reagent Substances 0.000 abstract 1
- 239000001023 inorganic pigment Substances 0.000 abstract 1
- 235000019241 carbon black Nutrition 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 5
- 230000001795 light effect Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 4
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 4
- 238000005987 sulfurization reaction Methods 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 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
- 238000010931 ester hydrolysis Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- KHDSWONFYIAAPE-UHFFFAOYSA-N silicon sulfide Chemical compound S=[Si]=S KHDSWONFYIAAPE-UHFFFAOYSA-N 0.000 description 1
- 125000005373 siloxane group Chemical group [SiH2](O*)* 0.000 description 1
- 125000005401 siloxanyl group Chemical group 0.000 description 1
Abstract
The invention relates to a condensation type RTV silicone rubber composition with a matte surface. The composition is composed of three components: A, B and C. Specifically, component A comprises, by weight part: 80-120 of 107 silicone rubber, 20-110 of a filling material, 5-80 of a plasticizer, 1-10 of hydroxy silicone oil, and 1-10 of an inorganic pigment; component B comprises, by weight part: 2-15 of a crosslinking agent, 1-8 of a silane coupling agent, 5-35 of the plasticizer, and 0.05-0.6 of a catalyst; and component C comprises, by weight part: 0.5-5 of a matt agent. The silicone rubber provided in the invention has good storage stability and excellent matte effect, can be widely applied in maskless LED display screen module potting, and effectively reduces the production cost. After using the silicone rubber, the glossiness can be reduced to less than 0.5Gs (60DEG C), and the matte effect is very excellent.
Description
Technical field
The present invention relates to a kind of pair of component condensed type rubber composition, particularly, the present invention relates to a kind of condensed type rubber composition of matte surface.
Background technology
Room temperature vulcanized silicone rubber is a kind of novel silicone elastomer that comes out in the sixties, and the distinguishing feature of this rubber is at room temperature need not heat, pressurize and can solidify on the spot, and it is extremely convenient to use.Therefore, become an important component part of whole organosilicon product rapidly once coming out, room temperature vulcanized silicone rubber has been widely used as tackiness agent, sealing agent, protective coating, embedding and pattern-making material now, and its purposes is all arranged in all trades and professions.Room temperature vulcanized silicone rubber is because molecular weight is lower; Therefore have the title of liquid silastic; Its physical aspect is generally flowable fluid or heavy-gravity paste; Its viscosity according to the requirement of using, can be made into the perfusion material of automatic levelling to the sizing material before the sulfuration or do not trickle but can be coated with the putty of scraping between 100 ~ 1000000cps.Filler and high-temperature silicon disulfide rubber that room temperature vulcanized silicone rubber is used are similar; Adopt black-reinforced; And dose different additives and can make sizing material have different proportion, hardness, intensity, flowability and thixotropy, and make cross-linked rubber have various properties such as fire-retardant, conduction, heat conduction, anti-ablation; Room temperature vulcanized silicone rubber can be divided into single component and two-component room-temperature-vulcanized silicone rubber by its packaging means, can be divided into condensed type and add-on type again by sulfuration mechanism.Therefore, room temperature vulcanized silicone rubber is by composition, sulfuration mechanism and the different three major types types that are divided into of use technology, i.e. single-component room-temperature vulcanized silicone rubber, bicomponent condensed type room temperature sulfidization silicon rubber and two-component addition type room temperature vulcanized silicone rubber.
The embedding that condensed room temperature vulcanized silicone rubber is applied to various electronic component modules is very general, and it has very excellent cementability and integrally curing performance, thereby is applicable to the embedding, the particularly embedding of LED display module of large-area module.General bicomponent condensed type room temperature sulfidization silicon rubber solidifies the glue-line that the back forms the light of layer of surface, has the intensive reflex action, thereby when the LED lamp luminescence, because reflection can cause situation such as fuzzy pictures.The most general a kind of way be plastics with a kind of matte surface as face shield, glue-line is all hidden, can avoid reflex to take place, but cost is higher.
CN 101565601A discloses a kind of condensed type organic silicon potting material composition that is used for the embedding matte surface of LED display module; It comprises: hydrolysis, wherein, can take place under the aerial moisture effect of higher unsaturated fatty acid that contains a plurality of unsaturated link(age)s by this mute photo etching in liquid silastic, linking agent, catalyzer, stopping composition, siccative and mute photo etching; Generate higher unsaturated fatty acid; Crosslinking reaction takes place in oxidation rapidly then, forms a mute light film on the glue-line surface; Fundamentally avoid the existence of reflecting, can not use face shield, practice thrift the effect of cost thereby reach.But longer between its mute light time, and glossiness is still higher.
Summary of the invention
One of the object of the invention is to provide a kind of condensed type rubber composition of matte surface; Said silastic surface forms the mute light film of one deck, fundamentally avoids the existence of reflecting, and can not use face shield thereby reach; Practice thrift the effect of cost; And shorter between the mute light time of said rubber composition, glossiness is lower, and mute light effect is very excellent.
In order to achieve the above object, the present invention has adopted following technical scheme:
The condensed type rubber composition of said matte surface is made up of A, B and three kinds of components of C;
Wherein, the A component comprises by weight: 107 Zylox 80 ~ 120, filler 20 ~ 110, softening agent 5 ~ 80, hydroxy silicon oil 1 ~ 10, mineral dye 1 ~ 10;
The B component comprises by weight: linking agent 2 ~ 15, silane coupling agent 1 ~ 8, softening agent 5 ~ 35, catalyzer 0.05 ~ 0.6;
The C component comprises by weight: mute photo etching 0.5 ~ 5.
Preferably, the A component comprises by weight: 107 Zylox 90 ~ 110, filler 25 ~ 105, softening agent 5 ~ 80, hydroxy silicon oil 1 ~ 10, mineral dye 1 ~ 10.
Preferably, the A component comprises by weight: 107 Zylox 100, filler 30 ~ 100, softening agent 5 ~ 80, hydroxy silicon oil 1 ~ 10, mineral dye 1 ~ 10.
In the A component:
The parts by weight of said 107 Zylox are 80 ~ 120, for example 83,86,89,92,94,98,100,103,108,111,114,117,119, and preferred 90 ~ 110, further preferred 100.
The parts by weight of said filler are 20 ~ 110, for example 30,40,50,60,70,80,90,100,105, and preferred 25 ~ 105, further preferred 30 ~ 100.
The parts by weight of said softening agent are 5 ~ 80, for example 10,20,30,40,50,60,70,75.
The parts by weight of said hydroxy silicon oil are 1 ~ 10, for example 2,3,4,5,6,7,8,9.
The parts by weight of said mineral dye are 1 ~ 10, for example 2,3,4,5,6,7,8,9.
Preferably, the B component comprises by weight: linking agent 3 ~ 12, silane coupling agent 2 ~ 7, softening agent 8 ~ 30, catalyzer 0.1 ~ 0.5.
Preferably, the B component comprises by weight: linking agent 5 ~ 10, silane coupling agent 3 ~ 6, softening agent 10 ~ 30, catalyzer 0.2 ~ 0.5.
In the B component:
The parts by weight of said linking agent are 2 ~ 15, for example 3,4,5,6,7,8,9,10,11,12,13,14, and preferred 3 ~ 12, further preferred 5 ~ 10.
The parts by weight of said silane coupling agent are 1 ~ 8, for example 2,3,4,5,6,7, and preferred 2 ~ 7, further preferred 3 ~ 6.
The parts by weight of said softening agent are 5 ~ 35, for example 8,11,14,18,21,23,25,27,29,32,34, and preferred 8 ~ 30, further preferred 10 ~ 30.
The parts by weight of said catalyzer are 0.05 ~ 0.6, for example 0.1,0.15,0.2,025,0.3,0.35,0.4,0.45,0.5,0.55, and preferred 0.1 ~ 0.5, further preferred 0.2 ~ 0.5.
Preferably, said C component comprises mute photo etching 1 ~ 5 by weight, for example 1.5,2.0,2.5,3.0,3.5,4.0,4.5,4.8,4.9, preferred 2 ~ 4.
Hydroxyl-terminated injecting two methyl siloxane, structural formula is described below:
Hydroxyl-terminated injecting two methyl siloxane is by siloxanyl monomers is polymerized, its molecule two ends have hydroxyl organosilicon material; It is except that the general property with siloxanes; The reactive behavior that also has hydroxyl, available it process some new materials, or be cross-linked into elastomerics.
107 Zylox and hydroxy silicon oil formal name used at school are hydroxyl-terminated injecting two methyl siloxane; Usually; Low viscous hydroxyl-terminated injecting two methyl siloxane is claimed hydroxy silicon oil; Full-bodied hydroxyl-terminated injecting two methyl siloxane is called 107 Zylox, and the hydroxy radical content of hydroxy silicon oil and fugitive constituent are high more a lot of than 107 Zylox.The difference of hydroxy silicon oil and 107 Zylox only is that both viscosity is different.Those skilled in the art have the ability hydroxy silicon oil and 107 Zylox are made a distinction according to the disclosed knowledge of prior art, and said 107 Zylox and hydroxy silicon oil all are available commercially.
As the LED display joint sealant; Requirement has good mobility; Preferably, the kinetic viscosity of 107 Zylox according to the invention is 1500-50000cps, for example 1800cps, 2500cps, 5000cps, 10000cps, 20000cps, 30000cps, 40000cps, 45000cps; Preferred 1800 ~ 45000cps, further preferred 2000 ~ 40000cps.Those skilled in the art also can be according to the own knowledge that grasped, 107 Zylox is carried out composite, for example can wait the viscosity of regulating 107 Zylox through adding tensio-active agent, so that it satisfies above-mentioned range of viscosities.Said 107 Zylox can be pure Zylox, also can be the Zylox that carries out after composite, and only need satisfy kinetic viscosity is that 1500 ~ 50000cps gets final product.
Preferably, the kinetic viscosity of said hydroxy silicon oil is 5 ~ 250cps, for example 10cps, 50cps, 80cps, 110cps, 150cps, 180cps, 210cps, 230cps, 240cps, preferred 10 ~ 220cps, further preferred 10 ~ 200cps.Those skilled in the art also can be according to the own knowledge that grasped, hydroxy silicon oil is carried out composite, for example can wait the viscosity of regulating hydroxy silicon oil through adding tensio-active agent, so that it satisfies above-mentioned range of viscosities.Said hydroxy silicon oil can be pure hydroxy silicon oil, also can be the hydroxy silicon oil that carries out after composite, and only need satisfy kinetic viscosity is that 5 ~ 250cps gets final product.
Softening agent preferable methyl silicone oil according to the invention; Further preferred kinetic viscosity is the methyl-silicone oil of 50 ~ 500cps; For example 100cps, 150cps, 200cps, 250cps, 300cps, 350cps, 400cps, 450cps, 480cps, 490cps; More preferably kinetic viscosity is the methyl-silicone oil of 80 ~ 450cps, and further preferred kinetic viscosity is the methyl-silicone oil of 100 ~ 400cps.
Preferably, said filler is selected from the mixture of a kind of in light calcium carbonate, water-ground limestone, talcum powder, white lake, WHITE CARBON BLACK or the silicon powder or at least two kinds.Said mixture is the mixture of silicon powder and WHITE CARBON BLACK for example; White lake and talcous mixture; The mixture of water-ground limestone and light calcium carbonate, the mixture of silicon powder, WHITE CARBON BLACK and white lake, the mixture of talcum powder, water-ground limestone and light calcium carbonate; Silicon powder, WHITE CARBON BLACK, white lake and talcous mixture, water-ground limestone, light calcium carbonate, silicon powder, WHITE CARBON BLACK and talcous mixture.
Preferably, said mineral dye is carbon black or iron oxide black.
Preferably, said linking agent is selected from tetraethoxy, ethyl polysilicate, positive silicic acid propyl ester, Union carbide A-162, methyltrimethoxy silane, dimethyldiethoxysilane, vinyltriethoxysilane or gathers a kind of in the Union carbide A-162 or at least two kinds mixture.Said mixture for example gathers the mixture of Union carbide A-162 and vinyltriethoxysilane; The mixture of dimethyldiethoxysilane and methyltrimethoxy silane; The mixture of Union carbide A-162 and positive silicic acid propyl ester; Tetraethoxy and the mixture that gathers Union carbide A-162; The mixture of vinyltriethoxysilane, dimethyldiethoxysilane and methyltrimethoxy silane; The mixture of Union carbide A-162, positive silicic acid propyl ester and tetraethoxy gathers the mixture of Union carbide A-162, vinyltriethoxysilane, dimethyldiethoxysilane and methyltrimethoxy silane, Union carbide A-162, positive silicic acid propyl ester, tetraethoxy, gathers the mixture of Union carbide A-162 and vinyltriethoxysilane.Through reducing the number of siloxane groups, can reduce cross-linking density, prolong operable time, reduce the hardness of Zylox, improve snappiness, simultaneously, increase the carbon atom number in the alkoxyl group, also can prolong operable time, improve snappiness.
Preferably, said silane coupling agent is selected from the mixture of a kind of in γ-An Bingjisanyiyangjiguiwan, γ-(methacryloxypropyl) propyl trimethoxy silicane, N-β-aminoethyl-γ-An Bingjisanjiayangjiguiwan or the isocyanic acid propyl-triethoxysilicane or at least two kinds.Said mixture is the mixture of γ-(methacryloxypropyl) propyl trimethoxy silicane and isocyanic acid propyl-triethoxysilicane for example; The mixture of N-β-aminoethyl-γ-An Bingjisanjiayangjiguiwan and γ-(methacryloxypropyl) propyl trimethoxy silicane; The mixture of γ-An Bingjisanyiyangjiguiwan and γ-(methacryloxypropyl) propyl trimethoxy silicane; The mixture of isocyanic acid propyl-triethoxysilicane, N-β-aminoethyl-γ-An Bingjisanjiayangjiguiwan and γ-(methacryloxypropyl) propyl trimethoxy silicane; The mixture of γ-An Bingjisanyiyangjiguiwan, γ-(methacryloxypropyl) propyl trimethoxy silicane, isocyanic acid propyl-triethoxysilicane and N-β-aminoethyl-γ-An Bingjisanjiayangjiguiwan, the mixture of γ-(methacryloxypropyl) propyl trimethoxy silicane, γ-An Bingjisanyiyangjiguiwan, γ-(methacryloxypropyl) propyl trimethoxy silicane, isocyanic acid propyl-triethoxysilicane and N-β-aminoethyl-γ-An Bingjisanjiayangjiguiwan.Said rubber composition excellent bond performance has been given in the adding of silane coupling agent.
The preferred organic tin inner complex of said catalyzer, further preferably from dibutyl tin laurate or/and two LAURIC ACID 99 MIN dioctyl tins.
Preferably, the preferred unsaturated high-grade fatty acid ester of said mute photo etching, the mixture of a kind of in further preferred oleum lini, tung oil or the Viscotrol C or at least two kinds.Under the aerial moisture effect of unsaturated high-grade fatty acid ester hydrolysis can take place, generate unsaturated high-grade fatty acid, crosslinking reaction takes place in oxidation rapidly then, forms a mute light film on the glue-line surface.
" comprising " of the present invention, mean it except that said component, can also comprise other components, these other components are given said Zylox different characteristic.In addition, " comprising " of the present invention, can also replace with enclosed " being " or " by ... form ".
Weight part described in the present invention adopts same benchmark to calculate, and unit is identical.
Two of the object of the invention is to provide a kind of preparation method of aforesaid rubber composition, and said method is:
With A, B and three kinds of component packing of C; Mixed at room temperature forms the softish silicone elastomer through condensation cross-linking, and wherein, mute photo etching issues unboiled water in the moisture effect of air and separates; Generate higher unsaturated fatty acid; Oxidation then forms the mute optical thin film of one deck at silastic surface, thereby obtains the condensed type rubber composition of matte surface.
Three of the object of the invention is to provide a kind of purposes of aforesaid rubber composition, and said rubber composition can be used for the embedding of LED display module.
Compared with prior art, the present invention has following beneficial effect:
Two-component silicone rubber stability in storage of the present invention is good, and mute light effect is good, is widely used in not having the LED display module embedding of face shield, effectively reduces production cost.Do not adopt such dulling material, glossiness is about 70 ~ 90Gs (60 °), but adopts after the said material, and glossiness drops to below the 0.5Gs (60 °), has very excellent mute light effect.Zylox according to the invention is short between the mute light time, and mute light effect is excellent, has very high using value.
Embodiment
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical case of the present invention but non-restrictive example is following:
Embodiment 1
A kind of condensed type rubber composition of matte surface is characterized in that, said rubber composition is made up of A, B and three kinds of components of C;
The A component comprises by weight: 107 Zylox (viscosity is 50000cps) 80, water-ground limestone 110, methyl-silicone oil (viscosity is 50cps) 40, hydroxy silicon oil (viscosity is 150cps) 5, carbon black 1;
The B component comprises by weight: tetraethoxy 2, γ-An Bingjisanyiyangjiguiwan 1, methyl-silicone oil (viscosity is 50cps) 20, dibutyl tin laurate 0.05;
The C component comprises by weight: oleum lini 0.5.
Embodiment 2
A kind of condensed type rubber composition of matte surface is characterized in that, said rubber composition is made up of A, B and three kinds of components of C;
The A component comprises by weight: 107 Zylox 120 (viscosity is 1500cps), light calcium carbonate 20, methyl-silicone oil (viscosity is 500cps) 80, hydroxy silicon oil (viscosity is 5cps) 10, carbon black 5;
The B component comprises by weight: positive silicic acid propyl ester 15, γ-(methacryloxypropyl) propyl trimethoxy silicane 8, methyl-silicone oil (viscosity is 500cps) 35, two LAURIC ACID 99 MIN dioctyl tins 0.6;
The C component comprises by weight: tung oil 5.
Embodiment 3
A kind of condensed type rubber composition of matte surface is characterized in that, said rubber composition is made up of A, B and three kinds of components of C;
The A component comprises by weight: 107 Zylox 100 (viscosity is 25000cps), talcum powder 60, methyl-silicone oil (viscosity is 250cps) 5, hydroxy silicon oil (viscosity is 250cps) 1, carbon black 10;
The B component comprises by weight: methyltrimethoxy silane 10, N-β-aminoethyl-γ-An Bingjisanjiayangjiguiwan 5, methyl-silicone oil (viscosity is 250cps) 5, dibutyl tin laurate and two LAURIC ACID 99 MIN dioctyl tins 0.3;
The C component comprises by weight: Viscotrol C 2.5.
The preparation method of the described rubber composition of embodiment 1-3 is:
With A, B and three component packing of C; Mixed at room temperature forms the softish silicone elastomer through condensation cross-linking, and wherein, the mute aerial moisture effect of photo etching issues unboiled water and separates; Generate higher unsaturated fatty acid; Oxidation then forms the mute optical thin film of one deck at silastic surface, thereby obtains the condensed type rubber composition of matte surface.
Comparative Examples 1
Comparative Examples 1 is disclosed one of them embodiment of CN 101565601A.
Said rubber composition is made up of A, B and three components of C:
The A component: 107 glue of 100 parts of 5000cs, the dimethyl silicone oil of 10 parts of 100cs, 50 parts of particle diameters are handled lime carbonate, Raven M carbon black (U.S. Columbia Co., Ltd), 2 parts of white carbon blacks of Sipernat 200 precipitator method (Degussa) less than the Triple Pressed Stearic Acid of 2 μ;
B component: 10 parts of tetraethoxysilanes, 2 parts of γ-An Bingjisanyiyangjiguiwans, 0.1 part of dibutyl tin dilaurate;
C component: 10 parts of tung oil, 5 parts of Viscotrol C, 10 parts of acrylate modified Synolac.
The preparation method of said Zylox is: A, B and C three components; Mix under the room temperature after condensation cross-linking; Form the softish silicone elastomer; Mute photo etching composition wherein forms the mute light film of one deck again through hydrolysis oxidation at silastic surface, thereby obtains a kind of condensed type organic silicon potting material of matte surface.
Embodiment 1-3 and Comparative Examples 1 described Zylox are carried out the test of hardness, matte surface time and glossiness, and concrete outcome is as shown in table 1.
Table 1 embodiment 1-3 and Comparative Examples 1 test result
Compare with Comparative Examples 1, short between the mute light time of Zylox according to the invention, and glossiness is lower, and mute light effect is better.
Should be noted that and understand, under the situation that does not break away from the desired the spirit and scope of the present invention of accompanying Claim, can make various modifications and improvement the present invention of above-mentioned detailed description.Therefore, the scope of the technical scheme of requirement protection does not receive the restriction of given any specific exemplary teachings.
Applicant's statement, the present invention explains detailed method of the present invention through the foregoing description, but the present invention is not limited to above-mentioned detailed method, does not mean that promptly the present invention must rely on above-mentioned detailed method and could implement.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (10)
1. the condensed type rubber composition of a matte surface is characterized in that, said rubber composition is made up of A, B and three kinds of components of C;
Wherein: the A component comprises by weight: 107 Zylox 80 ~ 120, filler 20 ~ 110, softening agent 5 ~ 80, hydroxy silicon oil 1 ~ 10, mineral dye 1 ~ 10;
The B component comprises by weight: linking agent 2 ~ 15, silane coupling agent 1 ~ 8, softening agent 5 ~ 35, catalyzer 0.05 ~ 0.6;
The C component comprises by weight: mute photo etching 0.5 ~ 5.
2. rubber composition as claimed in claim 1 is characterized in that, the A component comprises by weight: 107 Zylox 90 ~ 110, filler 25 ~ 105, softening agent 5 ~ 80, hydroxy silicon oil 1 ~ 10, mineral dye 1 ~ 10;
Preferably, the A component comprises by weight: 107 Zylox 100, filler 30 ~ 100, softening agent 5 ~ 80, hydroxy silicon oil 1 ~ 10, mineral dye 1 ~ 10.
3. according to claim 1 or claim 2 rubber composition is characterized in that the B component comprises by weight: linking agent 3 ~ 12, silane coupling agent 2 ~ 7, softening agent 8 ~ 30, catalyzer 0.1 ~ 0.5;
Preferably, the B component comprises by weight: linking agent 5 ~ 10, silane coupling agent 3 ~ 6, softening agent 10 ~ 30, catalyzer 0.2 ~ 0.5.
4. like the described rubber composition of one of claim 1-3, it is characterized in that said C component comprises mute photo etching 1 ~ 5, preferred 2 ~ 4 by weight;
Preferably, the kinetic viscosity of said 107 Zylox is 1500-50000cps, preferred 1800 ~ 45000cps, further preferred 2000 ~ 40000cps.
5. like the described rubber composition of one of claim 1-4; It is characterized in that; Said softening agent preferable methyl silicone oil; Further preferred kinetic viscosity is the methyl-silicone oil of 50 ~ 500cps, and more preferably kinetic viscosity is the methyl-silicone oil of 80 ~ 450cps, and further preferred kinetic viscosity is the methyl-silicone oil of 100 ~ 400cps;
Preferably, the kinetic viscosity of said hydroxy silicon oil is 5 ~ 250cps, preferred 10 ~ 220cps, further preferred 10 ~ 200cps.
6. like the described rubber composition of one of claim 1-5, it is characterized in that said filler is selected from the mixture of a kind of in light calcium carbonate, water-ground limestone, talcum powder, white lake, WHITE CARBON BLACK or the silicon powder or at least two kinds;
Preferably, said mineral dye is carbon black or iron oxide black.
7. like the described rubber composition of one of claim 1-6; It is characterized in that said linking agent is selected from tetraethoxy, ethyl polysilicate, positive silicic acid propyl ester, Union carbide A-162, methyltrimethoxy silane, dimethyldiethoxysilane, vinyltriethoxysilane or gathers a kind of in the Union carbide A-162 or at least two kinds mixture;
Preferably, said silane coupling agent is selected from the mixture of a kind of in γ-An Bingjisanyiyangjiguiwan, γ-(methacryloxypropyl) propyl trimethoxy silicane, N-β-aminoethyl-γ-An Bingjisanjiayangjiguiwan or the isocyanic acid propyl-triethoxysilicane or at least two kinds.
8. like the described rubber composition of one of claim 1-7, it is characterized in that, the preferred organotin chelate catalyst of said catalyzer, further preferably from dibutyl tin laurate or/and two LAURIC ACID 99 MIN dioctyl tins;
Preferably, the preferred unsaturated high-grade fatty acid ester of said mute photo etching, the mixture of a kind of in further preferred oleum lini, tung oil or the Viscotrol C or at least two kinds.
9. the preparation method like one of claim 1-8 described rubber composition is characterized in that, said method is:
With A, B and three kinds of component packing of C; Mixed at room temperature forms the softish silicone elastomer through condensation cross-linking, and wherein, mute photo etching issues unboiled water in the moisture effect of air and separates; Generate unsaturated high-grade fatty acid; Oxidation then forms the mute optical thin film of one deck at silastic surface, thereby obtains the condensed type rubber composition of matte surface.
10. the purposes like one of claim 1-8 described rubber composition is characterized in that, said rubber composition can be used for the embedding of LED display module.
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| CN101565601A (en) * | 2008-05-14 | 2009-10-28 | 广州市回天精细化工有限公司 | Condensed type organic silicon potting material composition with matte surface |
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| CN101565601A (en) * | 2008-05-14 | 2009-10-28 | 广州市回天精细化工有限公司 | Condensed type organic silicon potting material composition with matte surface |
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