CN103756631A - Double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant - Google Patents

Double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant Download PDF

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Publication number
CN103756631A
CN103756631A CN201410010757.9A CN201410010757A CN103756631A CN 103756631 A CN103756631 A CN 103756631A CN 201410010757 A CN201410010757 A CN 201410010757A CN 103756631 A CN103756631 A CN 103756631A
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organic silicon
type flame
autohension
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CN103756631B (en
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陈春浩
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Sika Jiangsu Industrial Materials Co Ltd
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CHANGSHU HENGXIN ADHESIVE CO LTD
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Abstract

The invention discloses double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant. The double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant comprises a component A and a component B and is characterized in that the component A is prepared by mixing a basic material, a platinum catalyst and a coupling agent in mass ratio of 100:(0.00001-0.1):(0.1-1); the component B is formed by mixing a basic material, a coupling agent, an inhibitor and a tackifier in mass ratio of 100: (0.2-1.0):(0.01-1):(1-10); the basic material is formed by mixing vinyl-terminated silicone oil, heat-conducting filler and a flame retardant in mass ratio of 100: (120-160):(20-40). The double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant has good optical performance, heat conduction property and relatively good viscosity and can meet the long-term using requirements in high and low temperature environments.

Description

Two component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesives
Technical field
The present invention relates to Embedding Material technical field, particularly relate to a kind of two component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive.
Background technology
Along with electronics is constantly integrated into more powerful function in less assembly, flame retardant resistance and the thermal conductivity of electronic component to joint sealant had higher requirement.Add-on type liquid silicon rubber has that no coupling product when crosslinked discharges, shrinking percentage is little, cross-linking density and the feature such as vulcanization rate is easy to control, is the desirable body material of electronic apparatus joint sealant.But addition-type silicon rubber is because molecule itself is nonpolar, cementability is poor, and while using as electronics embedding, coating material, moisture can infiltrate device inside by the space between rubber and base material and cause corrosion and failure of insulation.Use silane coupling agent substrate surface to be processed to the cementability that can improve additional organosilicon material and various materials; But this method has increased production process and production time, solvent evaporates during use causes again unnecessary environmental pollution.Carbonic ether has excellent insulativity, good flame retardancy and dimensional stability, is widely used in electronic apparatus as shell, body and timbering material.The various aminosilanes that condensed type liquid silastic is conventional have better cementability to PC, but add-on type liquid silicon rubber is had poisoning effect and can not be used.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of two component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive, has good optical property, heat conductivility and good viscosity, and can meet the requirement of life-time service under high and low temperature environment.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of two component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive is provided, comprise A component and B component, described A component is mixed according to ratio of quality and the number of copies 100:0.00001 ~ 0.1:0.1 ~ 1 by base-material, platinum catalyst and coupling agent, described B component is mixed according to ratio of quality and the number of copies 100:0.2 ~ 1:0.01 ~ 1:1 ~ 10 by base-material, coupling agent, inhibitor and tackifier, and described base-material is mixed according to ratio of quality and the number of copies 100:120 ~ 160:20 ~ 40 by vinyl-terminated silicone fluid, heat conductive filler and fire retardant.
In a preferred embodiment of the present invention, the described heat conductive filler in described base-material is aluminum oxide, and described fire retardant is aluminium hydroxide.
In a preferred embodiment of the present invention, as the described aluminum oxide of heat conductive filler, for the aluminum oxide with different-grain diameter forms according to extra fine quality portion rate mixed preparing.
In a preferred embodiment of the present invention, as the described aluminum oxide of heat conductive filler, be that the alumina raw material of 5 μ m and two kinds of particle diameters of 15 μ m forms according to ratio of quality and the number of copies 1:2 mixed preparing.
In a preferred embodiment of the present invention, described coupling agent is the mixture of vinyltrimethoxy silane and gamma-methyl allyl acyloxypropyl trimethoxysilane.
In a preferred embodiment of the present invention, described tackifier are the reaction product of TriMethylolPropane(TMP) diallyl, γ-glycidoxypropyltrimethoxy silane and tetraethoxy.
In a preferred embodiment of the present invention, described A component mixes and then carries out vacuum defoamation according to ratio of quality and the number of copies 1:1 with described B component, at room temperature vulcanizes 15 ~ 40h and makes described dual composition addition type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive.
The invention has the beneficial effects as follows: a kind of two component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesives of the present invention, there is excellent chemical property, wherein in base-material, be filled with heat conductive filler, can realize higher fill-up, improve thermal conductivity and the mobility of joint sealant, the also use of fire retardant and platinum catalyst has improved the flame retardant properties of joint sealant, the present invention is without silane coupling agent, under the heating condition of 90 ℃, PC and aluminium etc. is had to good cementability, there is good over-all properties.
Embodiment
Below preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Embodiment 1:
(1) preparation of base-material: 100 parts of vinyl silicone oils, 150 parts of aluminum oxide, 30 parts of aluminium hydroxides are added in high speed dispersor and mixed, and vacuumizing and defoaming, makes base-material.Wherein aluminum oxide, containing the alumina raw material of two kinds of particle diameters of 5 μ m and 15 μ m, forms according to ratio of quality and the number of copies 1:2 mixed preparing.
(2) preparation of A component: get 100 parts of base-materials, the platinum catalyst of 0.000015 part, the coupling agent of 0.5 part, mix vacuumizing and defoaming in high speed dispersor.
(3) preparation of B component: get 100 parts of base-materials, 8 parts of containing hydrogen silicone oils, 0.5 part of coupling agent, 0.05 part of inhibitor, 3 parts of tackifier, mix vacuumizing and defoaming in high speed dispersor.
(4) the A component of being prepared by above-mentioned steps mixes deaeration with B component according to mass ratio 1:1, imports in mould, vulcanizes at ambient temperature 24 hours or in 90 ℃ of sulfurations 30 minutes, makes finished product.
Embodiment 2:
(1) preparation of base-material: 100 parts of vinyl silicone oils, 155 parts of aluminum oxide, 32 parts of aluminium hydroxides are added in high speed dispersor and mixed, and vacuumizing and defoaming, makes base-material.Wherein aluminum oxide, containing the alumina raw material of two kinds of particle diameters of 5 μ m and 15 μ m, forms according to ratio of quality and the number of copies 1:2 mixed preparing.
(2) preparation of A component: get 100 parts of base-materials, the platinum catalyst of 0.000018 part, the coupling agent of 0.5 part, mix vacuumizing and defoaming in high speed dispersor.
(3) preparation of B component: get 100 parts of base-materials, 8 parts of containing hydrogen silicone oils, 0.45 part of coupling agent, 0.05 part of inhibitor, 3 parts of tackifier, mix vacuumizing and defoaming in high speed dispersor.
(4) the A component of being prepared by above-mentioned steps mixes deaeration with B component according to mass ratio 1:1, imports in mould, vulcanizes at ambient temperature 24 hours or in 90 ℃ of sulfurations 30 minutes, makes finished product.
Embodiment 3:
(1) preparation of base-material: 100 parts of vinyl silicone oils, 148 parts of aluminum oxide, 30 parts of aluminium hydroxides are added in high speed dispersor and mixed, and vacuumizing and defoaming, makes base-material.Wherein aluminum oxide, containing the alumina raw material of two kinds of particle diameters of 5 μ m and 15 μ m, forms according to ratio of quality and the number of copies 1:2 mixed preparing.
(2) preparation of A component: get 100 parts of base-materials, the platinum catalyst of 0.000012 part, the coupling agent of 0.5 part, mix vacuumizing and defoaming in high speed dispersor.
(3) preparation of B component: get 100 parts of base-materials, 8 parts of containing hydrogen silicone oils, 0.5 part of coupling agent, 0.05 part of inhibitor, 3 parts of tackifier, mix vacuumizing and defoaming in high speed dispersor.
(4) the A component of being prepared by above-mentioned steps mixes deaeration with B component according to mass ratio 1:1, imports in mould, vulcanizes at ambient temperature 24 hours or in 90 ℃ of sulfurations 30 minutes, makes finished product.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (7)

1. a two component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive, comprise A component and B component, it is characterized in that, described A component is mixed according to ratio of quality and the number of copies 100:0.00001 ~ 0.1:0.1 ~ 1 by base-material, platinum catalyst and coupling agent, described B component is mixed according to ratio of quality and the number of copies 100:0.2 ~ 1:0.01 ~ 1:1 ~ 10 by base-material, coupling agent, inhibitor and tackifier, and described base-material is mixed according to ratio of quality and the number of copies 100:120 ~ 160:20 ~ 40 by vinyl-terminated silicone fluid, heat conductive filler and fire retardant.
2. according to claim 1 pair of component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive, is characterized in that, the described heat conductive filler in described base-material is aluminum oxide, and described fire retardant is aluminium hydroxide.
3. according to claim 2 pair of component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive, is characterized in that, as the described aluminum oxide of heat conductive filler, for the aluminum oxide with different-grain diameter forms according to extra fine quality portion rate mixed preparing.
4. according to claim 3 pair of component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive, it is characterized in that, as the described aluminum oxide of heat conductive filler, be that the alumina raw material of 5 μ m and two kinds of particle diameters of 15 μ m forms according to ratio of quality and the number of copies 1:2 mixed preparing.
5. according to claim 1 pair of component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive, is characterized in that, described coupling agent is the mixture of vinyltrimethoxy silane and gamma-methyl allyl acyloxypropyl trimethoxysilane.
6. according to claim 1 pair of component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive, it is characterized in that, described tackifier are the reaction product of TriMethylolPropane(TMP) diallyl, γ-glycidoxypropyltrimethoxy silane and tetraethoxy.
7. according to claim 1 pair of component autohension add-on type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive, it is characterized in that, described A component mixes and then carries out vacuum defoamation according to ratio of quality and the number of copies 1:1 with described B component, at room temperature vulcanizes 15 ~ 40h and makes described dual composition addition type flame-retarded heat-conducting self-vulcanizing organic silicon potting adhesive.
CN201410010757.9A 2013-11-28 2014-01-10 Double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant Expired - Fee Related CN103756631B (en)

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CN104312529A (en) * 2014-10-08 2015-01-28 卢儒 Organic silicon heat conduction electronic filling adhesive and preparation method thereof
CN105038694A (en) * 2015-08-12 2015-11-11 东莞兆舜有机硅科技股份有限公司 Double-ingredient addition type organic silicon bonding casting glue and use method of casting glue
CN105647463A (en) * 2016-01-25 2016-06-08 杭州泓源电动汽车有限公司 Anti-flaming and anti-explosion heat conducting silica gel and use method thereof
CN106753205A (en) * 2017-01-11 2017-05-31 湖南博翔新材料有限公司 A kind of low viscosity, the epoxy modified silicone casting glue of high heat conduction and its application
CN108034255A (en) * 2017-10-31 2018-05-15 东莞市汉品电子有限公司 High fire-retardance heat-conducting silica gel sheet and its manufacture method
CN109054733A (en) * 2018-09-19 2018-12-21 深圳市红叶杰科技有限公司 A kind of bi-component self-adhesion add-on type electron pouring sealant and preparation method thereof
CN109439272A (en) * 2018-12-28 2019-03-08 中天东方氟硅材料有限公司 Two-component heat conductive flame-retarding organic silicon potting adhesive composition and its casting glue for electric vehicle and preparation method
US10428256B2 (en) 2017-10-23 2019-10-01 Honeywell International Inc. Releasable thermal gel
US10428257B2 (en) 2014-07-07 2019-10-01 Honeywell International Inc. Thermal interface material with ion scavenger
US10501671B2 (en) 2016-07-26 2019-12-10 Honeywell International Inc. Gel-type thermal interface material
CN110746926A (en) * 2019-12-02 2020-02-04 扬州宏远新材料股份有限公司 Self-adhesive heat-conducting flame-retardant two-component electronic encapsulating silicone rubber and preparation method thereof
CN110982074A (en) * 2019-12-25 2020-04-10 广州市高士实业有限公司 Normal-temperature curing tackifier system, preparation method and pouring sealant using same
US10781349B2 (en) 2016-03-08 2020-09-22 Honeywell International Inc. Thermal interface material including crosslinker and multiple fillers
US11041103B2 (en) 2017-09-08 2021-06-22 Honeywell International Inc. Silicone-free thermal gel
US11072706B2 (en) 2018-02-15 2021-07-27 Honeywell International Inc. Gel-type thermal interface material
US11373921B2 (en) 2019-04-23 2022-06-28 Honeywell International Inc. Gel-type thermal interface material with low pre-curing viscosity and elastic properties post-curing
CN115612302A (en) * 2022-09-30 2023-01-17 福建纳新硅业科技有限公司 High-strength composite silicone rubber and preparation method thereof

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Cited By (20)

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US10428257B2 (en) 2014-07-07 2019-10-01 Honeywell International Inc. Thermal interface material with ion scavenger
CN104312529A (en) * 2014-10-08 2015-01-28 卢儒 Organic silicon heat conduction electronic filling adhesive and preparation method thereof
CN105038694A (en) * 2015-08-12 2015-11-11 东莞兆舜有机硅科技股份有限公司 Double-ingredient addition type organic silicon bonding casting glue and use method of casting glue
CN105647463B (en) * 2016-01-25 2018-11-02 浙江泓源汽车集团有限公司 Fire-retardant, the explosion-proof heat conductive silica gel of one kind and its application method
CN105647463A (en) * 2016-01-25 2016-06-08 杭州泓源电动汽车有限公司 Anti-flaming and anti-explosion heat conducting silica gel and use method thereof
US10781349B2 (en) 2016-03-08 2020-09-22 Honeywell International Inc. Thermal interface material including crosslinker and multiple fillers
US10501671B2 (en) 2016-07-26 2019-12-10 Honeywell International Inc. Gel-type thermal interface material
CN106753205B (en) * 2017-01-11 2020-05-22 湖南博翔新材料有限公司 Epoxy modified organic silicon pouring sealant with low viscosity and high heat conductivity and application thereof
CN106753205A (en) * 2017-01-11 2017-05-31 湖南博翔新材料有限公司 A kind of low viscosity, the epoxy modified silicone casting glue of high heat conduction and its application
US11041103B2 (en) 2017-09-08 2021-06-22 Honeywell International Inc. Silicone-free thermal gel
US10428256B2 (en) 2017-10-23 2019-10-01 Honeywell International Inc. Releasable thermal gel
CN111373013A (en) * 2017-10-23 2020-07-03 霍尼韦尔国际公司 Peelable thermal gel
CN108034255A (en) * 2017-10-31 2018-05-15 东莞市汉品电子有限公司 High fire-retardance heat-conducting silica gel sheet and its manufacture method
US11072706B2 (en) 2018-02-15 2021-07-27 Honeywell International Inc. Gel-type thermal interface material
CN109054733A (en) * 2018-09-19 2018-12-21 深圳市红叶杰科技有限公司 A kind of bi-component self-adhesion add-on type electron pouring sealant and preparation method thereof
CN109439272A (en) * 2018-12-28 2019-03-08 中天东方氟硅材料有限公司 Two-component heat conductive flame-retarding organic silicon potting adhesive composition and its casting glue for electric vehicle and preparation method
US11373921B2 (en) 2019-04-23 2022-06-28 Honeywell International Inc. Gel-type thermal interface material with low pre-curing viscosity and elastic properties post-curing
CN110746926A (en) * 2019-12-02 2020-02-04 扬州宏远新材料股份有限公司 Self-adhesive heat-conducting flame-retardant two-component electronic encapsulating silicone rubber and preparation method thereof
CN110982074A (en) * 2019-12-25 2020-04-10 广州市高士实业有限公司 Normal-temperature curing tackifier system, preparation method and pouring sealant using same
CN115612302A (en) * 2022-09-30 2023-01-17 福建纳新硅业科技有限公司 High-strength composite silicone rubber and preparation method thereof

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