CN102408722A - Novel bi-component dealcoholization type silicon rubber sealant and preparation method thereof - Google Patents
Novel bi-component dealcoholization type silicon rubber sealant and preparation method thereof Download PDFInfo
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- CN102408722A CN102408722A CN2011103032871A CN201110303287A CN102408722A CN 102408722 A CN102408722 A CN 102408722A CN 2011103032871 A CN2011103032871 A CN 2011103032871A CN 201110303287 A CN201110303287 A CN 201110303287A CN 102408722 A CN102408722 A CN 102408722A
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Abstract
Novel bi-component dealcoholization type silicon rubber sealant and preparation method thereof, wherein component A itself is single-component dealcoholization type silicon rubber and can offer a final strength value equal to the mixture of component A and component B, and has a good storage stability. The component B contains water, wherein the water can be directly added in free-state way and carried on the filler material; the component B also contains reactive polymer which can be activated by contacting with the catalyst of the component A, and perform quick cross-linking reaction with the cross-linking agent in the component A at the same time, the advantages of the invention are as follows: on one hand, the invention solves the shortcoming that the single-component silicon rubber has bigger reliance on the temperature and humidity of the environment; on the other hand, the invention accelerates the curing and reduces sensibility of the bi-component system to the mix error and measurement error at the same time. The ratios of the component A and component B in the bi-component system can vary in a large range without producing adverse effect to the final strength.
Description
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Technical field
The present invention relates to a kind of new type double component dealcoholizing-type silicone rubber sealant and preparation method thereof, the component A self of this two-pack dealcoholizing-type Zylox moisture absorption fully solidifies, and the introducing of B component simultaneously can also be quickened to solidify.This new type double component silicone rubber has solved the single-component Zylox shortcoming bigger to the ambient temperature and humidity dependency on the one hand, has also reduced the susceptibility of bicomponent system to mixing errors and error in dipping simultaneously at the acceleration solidified on the other hand.This two-component silicone rubber can be widely used in bonding, the embedding of various electronics, electric elements, can play provide protections such as protection against the tide, anticorrosion, insulation, is suitable for especially requiring fast and the embedding of deep layer vulcanization parts and bonding.
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Background technology
Room temperature vulcanized silicone rubber (be called for short RTV) is that need not to heat at room temperature be vulcanizable one type of Zylox; Development rapidly since coming out the sixties; Be widely used in industries such as electronics, electric, automobile and building; The rise of photovoltaic industry in recent years is for the development of RTV Zylox has brought new opportunity.RTV Zylox can be divided into two types of single component and two-packs by packaging means.
It is preferred that single-component RTV Zylox because easy to use is generally user institute, because do not have mixing errors and error in dipping generation when using.Yet the curing of single-component RTV Zylox is from outward appearance to inner essence, and when curing depth is difficult to completely solidified during greater than certain thickness, slow relatively solidification rate causes its use to receive restriction seriously.Another shortcoming of single-component RTV Zylox is that their solidification rate is very big to the dependency of weather; The solidification rate that is to say them not only depends on surrounding temperature; And the atmospheric moisture around depending on to a greater extent; Particularly in the winter time month, atmospheric moisture is very low, so deep layer is solidified very slow.
The great advantage of two component RTV Zylox is exactly can deep layer vulcanization; Conventional two-component adhesive system is that basic glue and linking agent, catalyzer etc. are separated packing; By a certain percentage they are mixed before use and use; Therefore the shortcoming of this system is that they are very sensitive to mixing errors, has only when two kinds of components during with correct stoichiometric ratio thorough mixing, just can obtain ideal curing and performance.
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Summary of the invention
The object of the present invention is to provide a kind of new type double components system; Allow mixing errors and error in dipping when using; Solve the problem of two components to mixing errors and error in dipping susceptibility; This pair component system can in very large range change the ratio between component A and the B component, and can not have a negative impact to final strength.
In order to realize the object of the invention, proposeA kind of new type double component dealcoholizing-type silicone rubber sealant, this silicone rubber sealant comprise following A, two components of B:
Component A comprises following component:
A
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes, its molecular structural formula does
HO [(CH3) 2 SiO] n H, n=300～1500;
A
2. dimethyl silicone oil 10-30 part, its molecular structural formula does
(CH 3 ) 3 SiO [(CH3) 2 SiO] n Si (CH 3 ) 3 , n=50～230;
A
3. dealcoholizing-type linking agent 3-8 part
A
4. silane coupling agent 1-5 part
A
5. reinforced filling 10-100 part
A
6. catalyzer 0.1-0.6 part
B component comprises following component:
B
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes, its molecular structural formula does
HO [(CH3) 2 SiO] n H, n=300～1500;
B
2. tensio-active agent 1-2 part, select polyoxyethylene nonylphenol for use;
B
3.Deionized water 8-15 part, chemical formula are H
2O;
B
4. reinforced filling 10-100 part, the combination of selecting at least a or several kinds of fillers in gas-phase silica and the light calcium carbonate for use;
Wherein, the volumetric mixture ratio of A, B be 20:1 to 2:1, wherein preferred 4:1 mixes.
Described A
3The dealcoholizing-type linking agent is selected at least a or several kinds combination in methyltrimethoxy silane, vinyltrimethoxy silane, tetraethoxy and its partial hydrolystate for use;
Described A
4Silane coupling agent is selected at least a or several kinds combination in γ-An Bingjisanjiayangjiguiwan, N-(β-aminoethyl)-γ-An Bingjisanjiayangjiguiwan, γ-(methacryloxypropyl) propyl trimethoxy silicane, γ-mercaptopropyl trimethoxysilane and the γ-urea propyl trimethoxy silicane for use;
Described A
5Reinforced filling, the combination of selecting at least a or two fillers in gas-phase silica and the light calcium carbonate for use;
Described A
6The moisture-curable catalyzer is selected for use in dibutyl tin laurate, two LAURIC ACID 99 MIN dioctyl tins, stannous octoate, tetrabutyl titanate ester, four isobutyl-titanic acid ester and the tetra isopropyl titanate at least a;
Said B
1α, alpha, omega-dihydroxy polydimethyl siloxane viscosity in the time of 25 ℃ is 1000-50000mpa.s, and preferred viscosities is 3000mpa.s;
Said B
4The gas-phase silica surface is through dimethyldichlorosilane(DMCS) or hexamethyldisilazane modification, and light calcium carbonate is handled through lipid acid, sylvic acid surface-modifying agent.
The present invention also proposes the preparation method of said new type double component dealcoholizing-type silicone rubber sealant, and this silicone rubber sealant is made up of A, two components of B, and A, B two component volume ratios are from 20:1 to 2:1, and wherein preferred 4:1 mixes;
The preparation method of component A is: with the A of certain proportioning
1, A
2Vacuum tightness-0.095～-mix de-bubbled, N under the condition of 0.1MPa
2Protection adds A down successively
3Component, A
4Component, A
5Component and A
6Component, each add all vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa, can make the component A of similar single-component de-alcoholized Zylox at last;
The preparation method of B component is: with the B of certain proportioning
1, B
2Vacuum tightness-0.095～-mix de-bubbled, N under the condition of 0.1MPa
2Protection adds B down successively
3, B
4Component, each add all vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa, can make B component at last;
Wherein,
A
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes
A
2. dimethyl silicone oil 10-30 part
A
3. dealcoholizing-type linking agent 3-8 part
A
4. silane coupling agent 1-5 part
A
5. reinforced filling 10-100 part
A
6. catalyzer 0.1-0.6 part
B
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes
B
2. tensio-active agent 1-2 part, select polyoxyethylene nonylphenol for use;
B
3.Deionized water 8-15 part;
B
4. reinforced filling 10-100 part, the combination of selecting at least a or several kinds of fillers in gas-phase silica and the light calcium carbonate for use.
Described A
3The dealcoholizing-type linking agent is selected at least a or several kinds combination in methyltrimethoxy silane, vinyltrimethoxy silane, tetraethoxy and its partial hydrolystate for use;
Described A
4Silane coupling agent is selected at least a or several kinds combination in γ-An Bingjisanjiayangjiguiwan, N-(β-aminoethyl)-γ-An Bingjisanjiayangjiguiwan, γ-(methacryloxypropyl) propyl trimethoxy silicane, γ-mercaptopropyl trimethoxysilane and the γ-urea propyl trimethoxy silicane for use;
Described A
5Reinforced filling, the combination of selecting at least a or two fillers in gas-phase silica and the light calcium carbonate for use;
Described A
6The moisture-curable catalyzer is selected for use in dibutyl tin laurate, two LAURIC ACID 99 MIN dioctyl tins, stannous octoate, tetrabutyl titanate ester, four isobutyl-titanic acid ester and the tetra isopropyl titanate at least a;
Said B
1α, alpha, omega-dihydroxy polydimethyl siloxane viscosity in the time of 25 ℃ is 1000-50000mpa.s, and preferred viscosities is 3000mpa.s;
Said B
4The gas-phase silica surface is through dimethyldichlorosilane(DMCS) or hexamethyldisilazane modification, and light calcium carbonate is handled through lipid acid, sylvic acid surface-modifying agent.
Said component A can also adopt following concrete steps to make: with 25 ℃ of following viscositys α that is 20000mpa.s; 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes; Viscosity is 20 parts of the dimethyl silicone oils of 500mpa.s, vacuum tightness-0.095～-mix de-bubbled under the condition of 0.1MPa.Under nitrogen protection, add 4 parts of vinyltrimethoxy silanes; Then vacuum tightness-0.095～-stirring 20min under the condition of 0.1MPa carries out end capping; The partial hydrolystate that under nitrogen protection, adds 4 parts of tetraethoxys again, vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa; The mixture that under nitrogen protection, adds 2 parts of N-(β-aminoethyl)-γ-An Bingjisanjiayangjiguiwan and 2 parts of γ-(2,3-epoxy third oxygen) propyl trimethoxy silicanes, vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa; The light calcium carbonate that under the nitrogen protection condition, adds 5 parts of thermal silicas and 50 parts successively, vacuum tightness-0.095～-stir under the condition of 0.1MPa, disperse until to even no particle; The dibutyl tin laurate that under nitrogen protection, adds 0.4 part, vacuum tightness-0.095～-stir the 20min plastic emitting under the condition of 0.1MPa;
Said B component can also adopt following concrete steps to make: with 25 ℃ of following viscositys α that is 3000mpa.s, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes, 1 part of polyoxyethylene nonylphenol, vacuum tightness-0.095～-mix de-bubbled under the condition of 0.1MPa.Under the nitrogen protection condition, add 10 parts of deionized waters, vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa.The light calcium carbonate that under the nitrogen protection condition, adds 3 parts of thermal silicas and 40 parts successively, vacuum tightness-0.095～-stir, disperse under the condition of 0.1MPa until even no particle plastic emitting.
The present invention and the beneficial effect of compared with techniques in the past:
The advantage of new type double component dealcoholizing-type silicone rubber sealant is to have solved the single-component Zylox shortcoming bigger to the ambient temperature and humidity dependency on the one hand, has also reduced the susceptibility of bicomponent system to mixing errors and error in dipping simultaneously at the acceleration solidified on the other hand.Component A of the present invention can provide the final strength value suitable with the B component mixture with component A, and stability in storage is good.Moisture in the B component; Water can directly also be carried on the filler material with the interpolation of free state form, contains reactive polymer among the B simultaneously, can be through the activation with the catalyzer of component A; Simultaneously, under the promotion of B component water with A in linking agent quick crosslinking reaction takes place.Therefore, this pair component system can in very large range change the ratio between component A and the B component, and can not have a negative impact to final strength.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below in conjunction with specific embodiment, to further explain of the present invention.
The present invention relates to a kind of new type double component dealcoholizing-type silicone rubber sealant and preparation method thereof, it is characterized in that this silicone rubber sealant comprises following A, two components of B, the volumetric mixture ratio of A, B is that 20:1 is to 2:1.
1) component A comprises following component, and each component is following by weight:
A
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes
A
2. dimethyl silicone oil 10-30 part
A
3. dealcoholizing-type linking agent 3-8 part
A
4. silane coupling agent 1-5 part
A
5. reinforced filling 10-100 part
A
6. catalyzer 0.1-0.6 part
Described A
1Component is α, alpha, omega-dihydroxy polydimethyl siloxane, and its molecular structural formula does
HO [(CH3) 2 SiO] n H,Viscosity is 1000-50000mpa.s during n=300～1500,25 ℃, and preferred viscosities is the α of 20000mpa.s, alpha, omega-dihydroxy polydimethyl siloxane.
Described A
2Component is a dimethyl silicone oil, and its molecular structural formula does
(CH 3 ) 3 SiO [(CH3) 2 SiO] n Si (CH 3 ) 3 , viscosity is 50-500mpa.s during n=50～230,25 ℃, preferred viscosities is the dimethyl silicone oil of 500mpa.s.
Described A
3Component is the dealcoholizing-type linking agent, selects at least a or several kinds combination in methyltrimethoxy silane, vinyltrimethoxy silane, tetraethoxy and its partial hydrolystate for use.The combination of preferred vinyl Trimethoxy silane and tetraethoxy partial hydrolystate.
Described A
4Component is a silane coupling agent; Select at least a or several kinds combination in γ-An Bingjisanjiayangjiguiwan, N-(β-aminoethyl)-γ-An Bingjisanjiayangjiguiwan, γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane, γ-(methacryloxypropyl) propyl trimethoxy silicane, γ-mercaptopropyl trimethoxysilane and the γ-urea propyl trimethoxy silicane for use.The combination of preferred N-(β-aminoethyl)-γ-An Bingjisanjiayangjiguiwan and γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane.
Described A
5Component is a reinforced filling, selects the combination of at least a or several kinds of fillers in gas-phase silica and the light calcium carbonate for use.The gas-phase silica surface is general through dimethyldichlorosilane(DMCS) or hexamethyldisilazane modification, and light calcium carbonate is generally handled through surface-modifying agents such as lipid acid, sylvic acids.
Described A
6Component is the moisture-curable catalyzer, selects for use in dibutyl tin laurate, two LAURIC ACID 99 MIN dioctyl tins, stannous octoate, tetrabutyl titanate ester, four isobutyl-titanic acid ester, the tetra isopropyl titanate at least a.Preferred dibutyl tin laurate.
The preparation method of component A is: with the A of certain proportioning
1, A
2Vacuum tightness-0.095～-mix de-bubbled, N under the condition of 0.1MPa
2Protection adds A down successively
3Component, A
4Component, A
5Component and A
6Component, after each the adding all vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa, can make the component A of similar single-component de-alcoholized Zylox at last.
2) B component comprises following component:
B
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes
B
2.Tensio-active agent 1-2 part
B
3. deionized water 8-15 part
B
4. reinforced filling 10-100 part
Described B
1Component is α, alpha, omega-dihydroxy polydimethyl siloxane, and its molecular structural formula does
HO [(CH3) 2 SiO] n H,Viscosity is 1000-50000mpa.s during n=300～1500,25 ℃, and preferred viscosities is the α of 3000mpa.s, alpha, omega-dihydroxy polydimethyl siloxane.
Described B
2Component is a tensio-active agent, selects polyoxyethylene nonylphenol for use
Described B
3Component is a deionized water, and chemical formula is H
2O
Described B
4Component is a reinforced filling, selects the combination of at least a or several kinds of fillers in gas-phase silica and the light calcium carbonate for use.The gas-phase silica surface is general through dimethyldichlorosilane(DMCS) or hexamethyldisilazane modification, and light calcium carbonate is generally handled through surface-modifying agents such as lipid acid, sylvic acids.
The preparation method of B component is: with the B of certain proportioning
1, B
2Vacuum tightness-0.095～-mix de-bubbled, N under the condition of 0.1MPa
2Protection adds B down successively
3, B
4Component, each add all vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa, can make B component at last.
Embodiment:
With 25 ℃ of following viscositys α that is 20000mpa.s, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes, viscosity are 20 parts of the dimethyl silicone oils of 500mpa.s, vacuum tightness-0.095～-mix de-bubbled under the condition of 0.1MPa.Under nitrogen protection, add 4 parts of vinyltrimethoxy silanes; Then vacuum tightness-0.095～-stirring 20min under the condition of 0.1MPa carries out end capping; The partial hydrolystate that under nitrogen protection, adds 4 parts of tetraethoxys again, vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa.The mixture that under nitrogen protection, adds 2 parts of N-(β-aminoethyl)-γ-An Bingjisanjiayangjiguiwan and 2 parts of γ-(2,3-epoxy third oxygen) propyl trimethoxy silicanes, vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa.The light calcium carbonate that under the nitrogen protection condition, adds 5 parts of thermal silicas and 50 parts successively, vacuum tightness-0.095～-stir under the condition of 0.1MPa, disperse until to even no particle.The dibutyl tin laurate that under nitrogen protection, adds fast 0.4 part, vacuum tightness-0.095～-stir the 20min plastic emitting under the condition of 0.1MPa can make component A.
With 25 ℃ of following viscositys α that is 3000mpa.s, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes, 1 part of polyoxyethylene nonylphenol, vacuum tightness-0.095～-mix de-bubbled under the condition of 0.1MPa.Under the nitrogen protection condition, add 10 parts of deionized waters, vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa.The light calcium carbonate that under the nitrogen protection condition, adds 3 parts of thermal silicas and 40 parts successively, vacuum tightness-0.095～-stir under the condition of 0.1MPa, disperse until making B component to even no particle plastic emitting.
With the A component silicone rubber sealant for preparing among the embodiment and two-pack 4:1, the mixed silicone rubber sealant of 10:1; Utilize mould about the about 2mm of thickness to prepare the print of the about 2mm of thickness; Under (23 ± 2) ℃, (50 ± 5) % humidity condition, solidified 14 days; Be cut into dumbbell shape with special-purpose cut-off knife, press the GB/T531 tested for hardness, press GB/T528 test tensile strength and elongation at break.Can find out from test data; Mixed surface drying time of two components and single-component A reduced in comparison; The mechanical property of different mixing proportion 4:1 and 10:1 (tensile strength, elongation at break, hardness) differs also little with single-component A, has embodied the insensitivity to blending ratio.
Table 1
| Test event | Component A | 4:1 mixes | 10:1 mixes |
| Surface drying time/min | 29 | 18 | 17 |
| Hardness/A | 33 | 35 | 32 |
| Tensile strength/MPa | 1.9 | 1.9 | 1.8 |
| Elongation at break/% | 595 | 550 | 580 |
Above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further detailed description, and institute it should be understood that the above is merely specific embodiment of the present invention; Be not limited to the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.。
Claims (5)
1. a new type double component dealcoholizing-type silicone rubber sealant is characterized in that, this silicone rubber sealant comprises following A, two components of B:
Component A comprises following component:
A
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes, its molecular structural formula be HO [(CH3)
2SiO]
nH, n=300～1500;
A
2. dimethyl silicone oil 10-30 part, its molecular structural formula are (CH
3)
3SiO [(CH3)
2SiO]
nSi (CH
3)
3, n=50～230;
A
3. dealcoholizing-type linking agent 3-8 part;
A
4. silane coupling agent 1-5 part;
A
5. reinforced filling 10-100 part;
A
6. catalyzer 0.1-0.6 part;
2) B component comprises following component:
B
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes, its molecular structural formula be HO [(CH3)
2SiO]
nH, n=300～1500;
B
2. tensio-active agent 1-2 part, select polyoxyethylene nonylphenol for use;
B
3.Deionized water 8-15 part, chemical formula are H
2O;
B
4. reinforced filling 10-100 part, the combination of selecting at least a or several kinds of fillers in gas-phase silica and the light calcium carbonate for use;
Wherein, the volumetric mixture ratio of A, B be 20:1 to 2:1, preferred 4:1 mixes.
2. silicone rubber sealant according to claim 1 is characterized in that, described A
3The dealcoholizing-type linking agent is selected at least a or several kinds combination in methyltrimethoxy silane, vinyltrimethoxy silane, tetraethoxy and its partial hydrolystate for use;
Described A
4Silane coupling agent is selected at least a or several kinds combination in γ-An Bingjisanjiayangjiguiwan, N-(β-aminoethyl)-γ-An Bingjisanjiayangjiguiwan, γ-(methacryloxypropyl) propyl trimethoxy silicane, γ-mercaptopropyl trimethoxysilane and the γ-urea propyl trimethoxy silicane for use;
Described A
5Reinforced filling, the combination of selecting at least a or two fillers in gas-phase silica and the light calcium carbonate for use;
Described A
6The moisture-curable catalyzer is selected for use in dibutyl tin laurate, two LAURIC ACID 99 MIN dioctyl tins, stannous octoate, tetrabutyl titanate ester, four isobutyl-titanic acid ester and the tetra isopropyl titanate at least a;
Said B
1α, alpha, omega-dihydroxy polydimethyl siloxane viscosity in the time of 25 ℃ is 1000-50000mpa.s, and preferred viscosities is 3000mpa.s;
Said B
4The gas-phase silica surface is through dimethyldichlorosilane(DMCS) or hexamethyldisilazane modification, and light calcium carbonate is handled through lipid acid, sylvic acid surface-modifying agent.
3. the preparation method of a new type double component dealcoholizing-type silicone rubber sealant is characterized in that, said this silicone rubber sealant is made up of A, two components of B, and A, B two component volume ratios are from 20:1 to 2:1, and wherein preferred 4:1 mixes;
The preparation method of component A is: with the A of certain proportioning
1, A
2Vacuum tightness-0.095～-mix de-bubbled, N under the condition of 0.1MPa
2Protection adds A down successively
3Component, A
4Component, A
5Component and A
6Component, each add all vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa, can make the component A of similar single-component de-alcoholized Zylox at last;
The preparation method of B component is: with the B of certain proportioning
1, B
2Vacuum tightness-0.095～-mix de-bubbled, N under the condition of 0.1MPa
2Protection adds B down successively
3, B
4Component, each add all vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa, can make B component at last;
Wherein,
A
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes;
A
2. dimethyl silicone oil 10-30 part;
A
3. dealcoholizing-type linking agent 3-8 part;
A
4. silane coupling agent 1-5 part;
A
5. reinforced filling 10-100 part;
A
6. catalyzer 0.1-0.6 part;
B
1. α, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes;
B
2. tensio-active agent 1-2 part, select polyoxyethylene nonylphenol for use;
B
3.Deionized water 8-15 part;
B
4. reinforced filling 10-100 part, the combination of selecting at least a or several kinds of fillers in gas-phase silica and the light calcium carbonate for use.
4. the preparation method of silicone rubber sealant according to claim 3 is characterized in that, described A
3The dealcoholizing-type linking agent is selected at least a or several kinds combination in methyltrimethoxy silane, vinyltrimethoxy silane, tetraethoxy and its partial hydrolystate for use;
Described A
4Silane coupling agent is selected at least a or several kinds combination in γ-An Bingjisanjiayangjiguiwan, N-(β-aminoethyl)-γ-An Bingjisanjiayangjiguiwan, γ-(methacryloxypropyl) propyl trimethoxy silicane, γ-mercaptopropyl trimethoxysilane and the γ-urea propyl trimethoxy silicane for use;
Described A
5Reinforced filling, the combination of selecting at least a or two fillers in gas-phase silica and the light calcium carbonate for use;
Described A
6The moisture-curable catalyzer is selected for use in dibutyl tin laurate, two LAURIC ACID 99 MIN dioctyl tins, stannous octoate, tetrabutyl titanate ester, four isobutyl-titanic acid ester and the tetra isopropyl titanate at least a;
Said B
1α, alpha, omega-dihydroxy polydimethyl siloxane viscosity in the time of 25 ℃ is 1000-50000mpa.s, and preferred viscosities is 3000mpa.s;
Said B
4The gas-phase silica surface is through dimethyldichlorosilane(DMCS) or hexamethyldisilazane modification, and light calcium carbonate is handled through lipid acid, sylvic acid surface-modifying agent.
5. the preparation method of silicone rubber sealant according to claim 4; It is characterized in that; Said component A adopts following concrete steps to make: with 25 ℃ of following viscositys α that is 20000mpa.s; 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes, viscosity are 20 parts of the dimethyl silicone oils of 500mpa.s, vacuum tightness-0.095～-mix de-bubbled under the condition of 0.1MPa; Under nitrogen protection, add 4 parts of vinyltrimethoxy silanes; Then vacuum tightness-0.095～-stirring 20min under the condition of 0.1MPa carries out end capping; The partial hydrolystate that under nitrogen protection, adds 4 parts of tetraethoxys again, vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa; The mixture that under nitrogen protection, adds 2 parts of N-(β-aminoethyl)-γ-An Bingjisanjiayangjiguiwan and 2 parts of γ-(2,3-epoxy third oxygen) propyl trimethoxy silicanes, vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa; The light calcium carbonate that under the nitrogen protection condition, adds 5 parts of thermal silicas and 50 parts successively, vacuum tightness-0.095～-stir under the condition of 0.1MPa, disperse until to even no particle; The dibutyl tin laurate that under nitrogen protection, adds 0.4 part, vacuum tightness-0.095～-stir the 20min plastic emitting under the condition of 0.1MPa; Said B component adopts following concrete steps to make: with 25 ℃ of following viscositys α that is 3000mpa.s, 100 parts of alpha, omega-dihydroxy polydimethyl siloxanes, 1 part of polyoxyethylene nonylphenol, vacuum tightness-0.095～-mix de-bubbled under the condition of 0.1MPa; Under the nitrogen protection condition, add 10 parts of deionized waters, vacuum tightness-0.095～-stir 20min under the condition of 0.1MPa; The light calcium carbonate that under the nitrogen protection condition, adds 3 parts of thermal silicas and 40 parts successively, vacuum tightness-0.095～-stir, disperse under the condition of 0.1MPa until even no particle plastic emitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110303287 CN102408722B (en) | 2011-10-10 | 2011-10-10 | Novel bi-component dealcoholization type silicon rubber sealant and preparation method thereof |
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Cited By (10)
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| CN103539483A (en) * | 2013-09-26 | 2014-01-29 | 国家电网公司 | Formula of post insulator cement crack filling repairing agent and preparation method |
| CN103805136A (en) * | 2013-12-11 | 2014-05-21 | 常熟市希诺包装制品有限公司 | Sealant |
| CN104194194A (en) * | 2014-07-29 | 2014-12-10 | 安徽九子山塑业有限公司 | Special-purpose filler for oxidization-resistant wear-resisting PVC (polyvinyl chloride) tube and preparation method for special-purpose fertilizer |
| CN104194195A (en) * | 2014-07-29 | 2014-12-10 | 安徽九子山塑业有限公司 | Flame-retardant high-reinforcement filler for PVC tubes and preparation method of flame-retardant high-reinforcement filler |
| CN106221241A (en) * | 2016-08-31 | 2016-12-14 | 江苏天辰新材料股份有限公司 | A kind of medical dual composition addition type liquid silastic and preparation method thereof |
| CN106867443A (en) * | 2015-12-10 | 2017-06-20 | 江苏天辰新材料股份有限公司 | A kind of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant and preparation method thereof |
| CN108570304A (en) * | 2017-03-14 | 2018-09-25 | 北京天山新材料技术有限公司 | A kind of two-component silicone rubber bonding agent of wet and heat ageing resistant and preparation method thereof |
| CN110982448A (en) * | 2019-12-24 | 2020-04-10 | 广州市白云化工实业有限公司 | Tackifier, dealcoholized RTV (room temperature vulcanized) silicone rubber and preparation method thereof |
| CN111910165A (en) * | 2020-07-20 | 2020-11-10 | 上海空间电源研究所 | Exposed metal protection liquid and protection method in PECVD (plasma enhanced chemical vapor deposition) process |
| CN112063359A (en) * | 2020-07-29 | 2020-12-11 | 广东美的厨房电器制造有限公司 | Adhesive composition and bonding method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539483A (en) * | 2013-09-26 | 2014-01-29 | 国家电网公司 | Formula of post insulator cement crack filling repairing agent and preparation method |
| CN103805136A (en) * | 2013-12-11 | 2014-05-21 | 常熟市希诺包装制品有限公司 | Sealant |
| CN104194194A (en) * | 2014-07-29 | 2014-12-10 | 安徽九子山塑业有限公司 | Special-purpose filler for oxidization-resistant wear-resisting PVC (polyvinyl chloride) tube and preparation method for special-purpose fertilizer |
| CN104194195A (en) * | 2014-07-29 | 2014-12-10 | 安徽九子山塑业有限公司 | Flame-retardant high-reinforcement filler for PVC tubes and preparation method of flame-retardant high-reinforcement filler |
| CN106867443A (en) * | 2015-12-10 | 2017-06-20 | 江苏天辰新材料股份有限公司 | A kind of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant and preparation method thereof |
| CN106221241A (en) * | 2016-08-31 | 2016-12-14 | 江苏天辰新材料股份有限公司 | A kind of medical dual composition addition type liquid silastic and preparation method thereof |
| CN108570304A (en) * | 2017-03-14 | 2018-09-25 | 北京天山新材料技术有限公司 | A kind of two-component silicone rubber bonding agent of wet and heat ageing resistant and preparation method thereof |
| CN110982448A (en) * | 2019-12-24 | 2020-04-10 | 广州市白云化工实业有限公司 | Tackifier, dealcoholized RTV (room temperature vulcanized) silicone rubber and preparation method thereof |
| CN111910165A (en) * | 2020-07-20 | 2020-11-10 | 上海空间电源研究所 | Exposed metal protection liquid and protection method in PECVD (plasma enhanced chemical vapor deposition) process |
| CN112063359A (en) * | 2020-07-29 | 2020-12-11 | 广东美的厨房电器制造有限公司 | Adhesive composition and bonding method |
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