CN103834172A - Low-density halogen-free flame retardant monocomponent titanate catalyzed room-temperature vulcanized silicone rubber and preparation method thereof - Google Patents
Low-density halogen-free flame retardant monocomponent titanate catalyzed room-temperature vulcanized silicone rubber and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a low-density halogen-free flame retardant monocomponent titanate catalyzed room-temperature vulcanized silicone rubber and preparation method thereof, the silicone rubber is prepared from the following components in parts by mass: 100 parts of modified alpha, omega-dihydroxy polydimethyl siloxane, 10-40 parts of modified alpha-hydroxy-omega-methyl polydimethyl siloxane, 10-20 parts of inorganic function filler, 3-10 parts of fumed silica, 0.5-2 parts of carbon black, 1-5 parts of vapor phase method titanium dioxide, 1-15 parts of a crosslinking agent, 1-10 parts of a titanate catalyst and 0-5 parts of a silane coupling agent. The processing property and storage property of the titanate catalyst system are improved, the silicone rubber with low viscosity can be prepared, the compatibility, color uniformity and storage stability and electrical property of the filler and the silicone rubber system are improved, the UL94-V0 level flame retardance is improved, the rubber cannot release any toxic gas in combustion; the prepared silicone rubber has lower density, wider viscosity adjustable range, and lower cost, the contact material cannot be corroded, and the demand on electronics industry is satisfied.
Description
Technical field
The present invention relates to high molecule sealing materials field, especially relate to single-component titanic acid ester catalysis room temperature vulcanized silicone rubber of halogen-free flameproof and preparation method thereof.
Background technology
The vulcanization reaction of single-component room-temperature vulcanized silicone rubber is by having an effect and be sulfided into elastomerics with airborne moisture.Along with the difference of linking agent, can be divided into many kinds such as depickling type, de-oxime type, dealcoholizing-type, de-amine type, de amide type and deacetone.Different with additive according to the filler adding, there is different density, viscosity, mobility and thixotropy, show different properties as heat-resisting, heat conduction, resistance to ablation, fire-retardant, conduction etc., thereby be applied to different industry fields.
Wherein, at electronic enterprises, with the raising of its development and environmental requirement, further strict to some the organic silicon sealant performance requriements for the protection of electric appliance and electronic: first silicon rubber does not have to components and parts such as electronic apparatuss price and the excellent aging resistance that burn into is lower; Next require UL94-V0 rank fire-retardant and not halogen-containing, require compared with low density and viscosity simultaneously; Finally, European Union has put into effect the following organotin use of some regulation limitations.Integration requirement and following developments, the separating methanol system of employing titanic acid ester catalysis, can meet the restriction such as price, European Union's regulation requirement.And currently available technology realizes halogen-free flameproof and generally has following mode: 1) nitrogen-phosphorus expansion sex flame retardant, as polyphosphate, ammonium polyphosphate, red phosphorus, trimeric cyanamide, phosphorous acid ester etc., can affect storage characteristics but be applied in single-component room temperature vulcanized silicon rubber; 2) platinum element/carbon black based flame retardant, can promote into carbon, and forms insulation layer, stop heat transmission and fire-retardant, but platinum price is high; 3) can pyrolytic decomposition produce the material of water, rare gas element such as aluminium hydroxide, magnesium hydroxide, zinc subcarbonate etc., can absorb heat reduces material surface temperature, forms the transmission of barrier layer prevention heat, but adopt mineral filler to realize the fire-retardant high filler loading capacity that needs of V0, cause the high and mineral filler meeting of density and viscosity and base glue to be separated.
Therefore, up to now, how to realize Halogen, low density, UL94-V0 fire-retardant and be not a problem in the urgent need to address containing the titanic acid ester system silicon rubber of the stable storing of organotin.
It is little, corrosion-free and not stanniferous to contact material that titanic acid ester dealcoholizing-type flame-proof silicon rubber has smell, is widely applied at electronic enterprises.But need the fire-retardant filler of high filler loading capacity to realize halogen-free flameproof, the disadvantageous effect such as this can cause occurring, and viscosity is high, processing characteristics is bad, filler and base glue are separated.
Summary of the invention
The object of this invention is to provide the preparation method of a kind of low density, halogen, organo-silicone rubber titanic acid ester catalysis and that there is high efficiency flame retardance and this organo-silicone rubber; A kind of method that solves mineral filler and organosilicon Miscibility is provided simultaneously.
In order to realize object of the present invention, a kind of low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber is proposed, described silicon rubber is made up of the component of following mass fraction:
The α of modification, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes;
10 ~ 40 parts of Alpha-hydroxy-ω-methyl polydimethylsiloxanes of modification;
10 ~ 20 parts of inorganic functional fillers;
3 ~ 10 parts of thermal silicas;
0.5 ~ 2 part of carbon black;
1 ~ 5 part of fumed titanium dioxide;
1 ~ 15 part of linking agent;
1 ~ 10 part of titanate catalyst;
0 ~ 5 part of silane coupling agent;
The α of described modification, alpha, omega-dihydroxy polydimethyl siloxane is the material with following structure:
Wherein n=200 ~ 1000, viscosity 0.5Pas ~ 20 Pas 25 DEG C time;
Described modification Alpha-hydroxy-ω-methyl polydimethylsiloxane is to have following structural material:
Wherein n=5 ~ 100, viscosity 2mPas ~ 100 mPas 25 DEG C time;
Described inorganic functional filler comprises aluminium hydroxide, aluminum oxide, magnesium hydroxide, magnesiumcarbonate, zinc carbonate, zinc hydroxide, zinc subcarbonate, zinc borate, calcium carbonate, red phosphorus, ammonium polyphosphate one or more mixtures wherein;
Described thermal silica is the thermal silica through hexamethyldisilazane or dimethyldichlorosilane(DMCS) processing, and specific surface area is 100 ~ 300 ㎡/g;
Described carbon black is contact process or furnace treated black;
Described fumed titanium dioxide is untreated, and specific surface area is 100 ~ 300 ㎡/g;
Described linking agent is one or more in tetramethoxy-silicane, vinyltrimethoxy silane, methyltrimethoxy silane, propyl trimethoxy silicane, anilinomethyl trimethoxy silane;
Described silane coupling agent is the reactant of one or more coupling agents in amino silane coupling agent, 3-glycidyl ether oxygen propyl trimethoxy silicane, sulfydryl one type of silane coupling agent, isocyanates silane coupling agent;
Described inorganic functional filler is preferably untreated aluminium hydroxide, and particle diameter is 4000 ~ 7000 orders.
Described carbon black is preferably the acetylene method carbon black in furnace treated black, and specific surface area is 50 ~ 100 ㎡/g.
Described catalyzer is preferably the ethyl acetoacetate chelate of isopropyl titanate.
Described linking agent is preferably methyl trimethoxy oxosilane.
Described silane coupling agent is preferably the reactant of amino silane coupling agent and epoxies silane coupling agent.
The present invention also proposes the preparation method of described low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber, comprises step:
(1) modified alpha, the preparation of alpha, omega-dihydroxy polydimethyl siloxane:
Appropriate viscosity α, alpha, omega-dihydroxy polydimethyl siloxane, end capping catalyzer, tetramethoxy-silicane add reaction attached middle school by certain mass ratio, at N
2in atmosphere, 120-150 DEG C of stirring reaction 4 ~ 8h, then at 100 DEG C, heats 1 ~ 2h and removes excessive tetramethoxy-silicane and other low-boiling-point substances under be greater than-0.09MPa vacuum condition, removes by filter catalyzer after being then down to room temperature;
(2) preparation of the Alpha-hydroxy-ω of modification-methyl polydimethylsiloxane:
Appropriate viscosity Alpha-hydroxy-ω-methyl polydimethylsiloxane, end capping catalyzer, tetramethoxy-silicane add reaction attached middle school by certain mass ratio, at N
2in atmosphere, 120-150 DEG C of stirring reaction 4 ~ 8h, then at 100 DEG C, heats 1 ~ 2h and removes excessive tetramethoxy-silicane and other low-boiling-point substances under be greater than-0.09MPa vacuum condition, removes by filter catalyzer after being then down to room temperature;
(3) surface modification treatment of filler:
1 ~ 5 part of 10 ~ 40 parts of Alpha-hydroxy-ω-methyl polydimethylsiloxane of the modification of above-mentioned preparation, 10 ~ 20 parts of inorganic functional fillers, 0.5 ~ 2 part of carbon black, fumed titanium dioxide add in high speed dispersion stirrer, under be greater than-0.09MPa of vacuum tightness condition, mix, then after nitrogen vacuum breaker, under nitrogen protection, stirring reaction 1 ~ 2h under 100 ~ 130 DEG C of conditions then removes low-boiling-point substance and realizes the surface modification to filler under be greater than-0.09MPa of this temperature and vacuum tightness condition;
(4) by 110 DEG C ~ 130 DEG C drying and dewaterings of thermal silica 3 ~ 5 hours;
(5) under room temperature, add the α of above-mentioned modification in the filler systems of modification, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes stir 10 ~ 15min under vacuum tightness >-0.09MPa condition; Add 3 ~ 10 parts of thermal silicas, stirring reaction 15 ~ 20min under vacuum tightness >-0.09MPa condition; Add 1 ~ 15 part of linking agent, 1 ~ 10 part of catalyzer, 0 ~ 5 part of silane coupling agent, under vacuum tightness >-0.09MPa condition, stirring reaction 30min ~ 60min obtains low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber.
The present invention be mainly realize that not halogen-containing, the low density of preparation, low viscosity, processing characteristics are good, storge quality is good in being separated and meeting the dealcoholized type room temperature vulcanized silicone rubber of the indices of RoHS and REACH.
Principal feature is the α that adopts modification, alpha, omega-dihydroxy polydimethyl siloxane is Alpha-hydroxy-ω-methyl polydimethylsiloxane, inorganic functional filler, linking agent, thermal silica, carbon black, fumed titanium dioxide, coupling agent, catalyzer of base polymer, modification etc., in high speed dispersion stirring tank, under vacuum condition, carry out chemical reaction, preparation flame retardant resistance alcohol type silicon rubber.It has excellent flame retardancy energy, electric property, stability in storage, has especially realized the fire-retardant consistency with having improved filler and base glue of low density.
In the present invention, adopt the compositional flame-retardant system of inorganic functional filler, titanium-containing compound, carbon black composition, in combustion processes, low-temperature region is divided heat of desorption and produced rare gas element blocking oxygen by inorganic functional filler to be realized fire-retardant; Middle high-temperature area titanium elements can be induced into carbon, carbon black increase becomes carbon efficiencies and realizes fire-retardant; The crystal conversion heat absorption of high-temperature area titanium dioxide, organosilicon self can produce that fine and close silicon-dioxide stops the degraded of thermooxidizing and fire-retardant simultaneously.
Beneficial effect of the present invention:
(1) use the α of modification, alpha, omega-dihydroxy polydimethyl siloxane, has improved processing characteristics, the storge quality of titanic acid ester catalyst system, can prepare low viscous silicon rubber;
(2) use Alpha-hydroxy-ω-methyl polydimethylsiloxane of modification to carry out surface treatment to inorganic functional filler, carbon black, fumed titanium dioxide, improve the flame retarding efficiency of filler, improved filler and silicon rubber Miscibility, color homogeneity and stability in storage and electrical property;
(3) to realize UL94-V0 rank by inorganic functional filler, titanium-containing compound and carbon black composite fire-retardant in the present invention, simultaneously filling adding amount few, there is no halogen, high, the fire-retardant good stability of flame retarding efficiency, and do not discharge any toxic gas when burning;
(4) compared with prior art, lower, the viscosity variable range of silicon rubber density of preparation is wider, cost is lower, and be Wuxi separating methanol curing system, corrosion-free to contact material, can to meet RoHS and REACH indices, meet the standards such as European Union, meet the requirement of electronic enterprises.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, the present invention is described in more detail.
Embodiment 1
The α of modification, the preparation of alpha, omega-dihydroxy polydimethyl siloxane
At N
2under protection, by the α of 1000 part of 1500 mPas, alpha, omega-dihydroxy polydimethyl siloxane, 100 parts of tetramethoxy-silicanes, end-blocking catalyzer carbonic acid calcium (or zinc carbonate, zinc oxide) 5 parts add in reaction vessel, stirring reaction 6h at 130 DEG C is (according to the different of end capping catalyzer and add the difference of tetramethoxy-silicane amount, those skilled in the art can be to temperature of reaction, time is carried out suitable adjustment), then at 100 DEG C, under vacuum tightness >-0.09MPa condition, extract low-boiling-point substance and excessive tetramethoxy-silicane, obtain the α that structural formula is the modification of I, alpha, omega-dihydroxy polydimethyl siloxane.
Embodiment 2
The preparation of Alpha-hydroxy-ω-methyl polydimethylsiloxane of modification
At N
2under protection, by Alpha-hydroxy-ω of 500 part of 50 mPas-methyl polydimethylsiloxane, 100 parts of tetramethoxy-silicanes, end-blocking catalyzer carbonic acid calcium (or zinc carbonate, zinc oxide) 5 parts add in reaction vessel, stirring reaction 6h at 130 DEG C is (according to the different of end capping catalyzer and add the difference of tetramethoxy-silicane amount, those skilled in the art can be to temperature of reaction, time is carried out suitable adjustment), then at 100 DEG C, under vacuum tightness >-0.09MPa condition, extract low-boiling-point substance and excessive tetramethoxy-silicane, obtain Alpha-hydroxy-ω that structural formula is the modification of II-methyl polydimethylsiloxane.
Embodiment 3
200 parts of Alpha-hydroxy-ω-methyl polydimethylsiloxanes of modification, 150 parts, aluminium hydroxide, 10 parts of Shawinigan blacks, 20 parts of fumed titanium dioxide add in high speed dispersion stirrer, under vacuum tightness >-0.09MPa condition, mix, then after nitrogen vacuum breaker, under nitrogen protection, stirring reaction 2h under 120 DEG C of conditions, then after removing low-boiling-point substance under this temperature and vacuum tightness >-0.09MPa condition, be cooled to room temperature, nitrogen vacuum breaker, add the α of above-mentioned modification, 1000 parts of alpha, omega-dihydroxy polydimethyl siloxanes, under vacuum tightness >-0.09MPa condition, stir 10min, add again 40 parts of thermal silicas, under vacuum tightness >-0.09MPa condition, stir 15min, finally add 20 parts of ethyl acetoacetate chelates, 10 parts of the silane coupling agents (aminopropyl triethoxysilane and glycidoxy-propyltrimethoxy silane are according to the reactant of 1:2.5 mol ratio) of 30 parts of methyltrimethoxy silanes, isopropyl titanate, stirring reaction 40min under vacuum tightness >-0.09MPa condition, obtain low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber, this product performance index is described in detail as table one.
Embodiment 4
Except adding 180 parts, Shawinigan black, aluminium hydroxide add 15 parts, fumed titanium dioxide to add 10 especially, other techniques and composition add-on are with embodiment 3, obtain low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber, this product performance index is described in detail as table one
Embodiment 5
Except adding 120 parts, Shawinigan black, aluminium hydroxide add 10 parts, fumed titanium dioxide to add 40 especially, other techniques and composition add-on are with embodiment 3, obtain low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber, this product performance index is described in detail as table one
Embodiment 6
Except Alpha-hydroxy-ω-methyl polydimethylsiloxane add-on of modification is 350 parts, other techniques and composition add-on are with embodiment 3, obtain low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber, this product performance index is described in detail as table one.
Comparative example 1
Except not adding Shawinigan black, other techniques and composition add-on are with embodiment 3, and the product performance index that obtains silicon rubber is described in detail as table one.
Comparative example 2
Except not adding fumed titanium dioxide, other techniques and composition add-on are with embodiment 3, and the product performance index that obtains silicon rubber is described in detail as table one.
Comparative example 3
Except not adding aluminium hydroxide, other techniques and composition add-on are with embodiment 3, and the product performance index that obtains silicon rubber is described in detail as table one.
Comparative example 4
Identical with composition and the add-on of embodiment 3, according to the preparation of following process: 20 parts of 200 parts of Alpha-hydroxy-ω-methyl polydimethylsiloxanes of modification, 150 parts, aluminium hydroxide, 10 parts of Shawinigan blacks, fumed titanium dioxide add in high speed dispersion stirrer, under vacuum tightness >-0.09MPa condition, mix, then after nitrogen vacuum breaker, under nitrogen protection, add the α of modification, 1000 parts of alpha, omega-dihydroxy polydimethyl siloxanes stir 10min under vacuum tightness >-0.09MPa condition; Add again 40 parts of thermal silicas, under vacuum tightness >-0.09MPa condition, stir 15min; Finally add 20 parts of ethyl acetoacetate chelates, 10 parts of the silane coupling agents (aminopropyl triethoxysilane and glycidoxy-propyltrimethoxy silane are according to the reactant of 1:2.5 mol ratio) of 30 parts of methyltrimethoxy silanes, isopropyl titanate, stirring reaction 40min under vacuum tightness >-0.09MPa condition, the product performance index that obtains silicon rubber is described in detail as table one
Low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber prepared by aforesaid method, viscosity when 25 DEG C of density while testing 25 DEG C of its surface drying time, GBT1410-2006 test volume resistivity, UL-94 standard testing flame retardant rating, the tests of density agar diffusion method by GB/T-13477, the test of plate viscometer method.Stability in storage testing method: airtight good uncured silicon rubber is put into 70 DEG C of baking oven 168h, take out to be cooledly to room temperature, test respectively surface drying time, viscosity, flame retardant rating, volume specific resistance by above-mentioned standard.Investigate after film after solidifying is put into two 85 (85% humidity/85 DEG C) baking oven 1000h simultaneously and take out, be placed to after room temperature by above-mentioned standard testing flame retardant rating, volume specific resistance, characterize weather resistance.
Claims (7)
1. a low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber, is characterized in that, described silicon rubber is made up of the component of following mass fraction:
The α of modification, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes;
10 ~ 40 parts of Alpha-hydroxy-ω-methyl polydimethylsiloxanes of modification;
10 ~ 20 parts of inorganic functional fillers;
3 ~ 10 parts of thermal silicas;
0.5 ~ 2 part of carbon black;
1 ~ 5 part of fumed titanium dioxide;
1 ~ 15 part of linking agent;
1 ~ 10 part of titanate catalyst;
0 ~ 5 part of silane coupling agent;
The α of described modification, alpha, omega-dihydroxy polydimethyl siloxane is the material with following structure:
Wherein n=200 ~ 1000, viscosity 0.5Pas ~ 20 Pas 25 DEG C time;
Alpha-hydroxy-ω-methyl polydimethylsiloxane of described modification is the material with following structure:
Wherein n=5 ~ 100, viscosity 2mPas ~ 100 mPas 25 DEG C time;
Described inorganic functional filler is selected from one or more the mixture in aluminium hydroxide, aluminum oxide, magnesium hydroxide, magnesiumcarbonate, zinc carbonate, zinc hydroxide, zinc subcarbonate, zinc borate, calcium carbonate, red phosphorus, ammonium polyphosphate;
Described thermal silica is the thermal silica through hexamethyldisilazane or dimethyldichlorosilane(DMCS) processing, and specific surface area is 100 ~ 300 ㎡/g;
Described carbon black is contact process or furnace treated black;
Described fumed titanium dioxide is untreated, and specific surface area is 100 ~ 300 ㎡/g;
Described linking agent is one or more in tetramethoxy-silicane, vinyltrimethoxy silane, methyltrimethoxy silane, propyl trimethoxy silicane, anilinomethyl trimethoxy silane;
Described silane coupling agent is the reactant of one or more coupling agents in amino silane coupling agent, 3-glycidyl ether oxygen propyl trimethoxy silicane, sulfydryl one type of silane coupling agent, isocyanates silane coupling agent.
2. low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber according to claim 1, is characterized in that, described inorganic functional filler is untreated aluminium hydroxide, and particle diameter is 4000 ~ 7000 orders.
3. low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber according to claim 2, is characterized in that, described carbon black is the acetylene method carbon black in furnace treated black, and specific surface area is 50 ~ 100 ㎡/g.
4. low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber according to claim 1, is characterized in that the ethyl acetoacetate chelate that described titanate catalyst is isopropyl titanate.
5. low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber according to claim 4, is characterized in that, described linking agent is methyl trimethoxy oxosilane.
6. low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber according to claim 5, is characterized in that, described silane coupling agent is the reactant of amino silane coupling agent and epoxies silane coupling agent.
7. the preparation method of the low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber as described in any one in claim 1-6, comprises step:
(1) modified alpha, the preparation of alpha, omega-dihydroxy polydimethyl siloxane:
Appropriate viscosity α, alpha, omega-dihydroxy polydimethyl siloxane, end capping catalyzer, tetramethoxy-silicane add in reactor by certain mass ratio, at N
2in atmosphere, 120-150 DEG C of stirring reaction 4 ~ 8h, then at 100 DEG C, heats 1 ~ 2h and removes excessive tetramethoxy-silicane and other low-boiling-point substances under be greater than-0.09MPa vacuum condition, removes by filter catalyzer after being then down to room temperature;
(2) preparation of the Alpha-hydroxy-ω of modification-methyl polydimethylsiloxane:
Appropriate viscosity Alpha-hydroxy-ω-methyl polydimethylsiloxane, end capping catalyzer, tetramethoxy-silicane add reaction attached middle school by certain mass ratio, at N
2in atmosphere, 120-150 DEG C of stirring reaction 4 ~ 8h, then at 100 DEG C, heats 1 ~ 2h and removes excessive tetramethoxy-silicane and other low-boiling-point substances under be greater than-0.09MPa vacuum condition, removes by filter catalyzer after being then down to room temperature;
(3) surface modification treatment of filler:
1 ~ 5 part of 10 ~ 40 parts of Alpha-hydroxy-ω-methyl polydimethylsiloxane of the modification of above-mentioned preparation, 10 ~ 20 parts of inorganic functional fillers, 0.5 ~ 2 part of carbon black, fumed titanium dioxide add in high speed dispersion stirrer, under vacuum tightness >-0.09MPa condition, mix, then after nitrogen vacuum breaker, under nitrogen protection, stirring reaction 1 ~ 2h under 100 ~ 130 DEG C of conditions then removes low-boiling-point substance and realizes the surface modification to filler under this temperature and vacuum tightness >-0.09MPa condition;
(4) by 110 DEG C ~ 130 DEG C drying and dewaterings of thermal silica 3 ~ 5 hours;
(5) under room temperature, add the α of above-mentioned modification in the filler systems of modification, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes stir 10 ~ 15min under vacuum tightness >-0.09MPa condition; Add 3 ~ 10 parts of thermal silicas, stirring reaction 15 ~ 20min under vacuum tightness >-0.09MPa condition; Add 1 ~ 15 part of linking agent, 1 ~ 10 part of titanate catalyst, 0 ~ 5 part of silane coupling agent, under vacuum tightness >-0.09MPa condition, stirring reaction 30min ~ 60min obtains low density halogen-free flameproof single component titanic acid ester catalysis room temperature vulcanized silicone rubber.
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| CN109749453A (en) * | 2018-12-28 | 2019-05-14 | 广州市白云化工实业有限公司 | Titanate esters catalyst composition and its preparation method and application |
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| CN114716968A (en) * | 2022-03-28 | 2022-07-08 | 老树根实业有限公司 | Organic silicon adhesive and production process thereof |
| CN115991875A (en) * | 2023-02-15 | 2023-04-21 | 杭州之江有机硅化工有限公司 | Titanate catalyst for dealcoholized room temperature vulcanized silicone rubber and preparation method thereof |
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| CN112940509A (en) * | 2015-01-28 | 2021-06-11 | 美国陶氏有机硅公司 | Elastomer composition and use thereof |
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