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Mechanically reinforced organic silica gel and preparation method thereof

A silicone and mechanical technology, applied in the field of gel and its preparation, can solve the problems of poor mechanical properties of silicone gel, difficulty in maintaining electrical equipment, affecting application performance, etc., achieve good mechanical properties, improve hydrophobic mobility, Effect of improving weather resistance and acid and alkali corrosion resistance

Pending Publication Date: 2022-08-05
BEIJING GUODIAN FUTONG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the mechanical properties of silicone gel are poor. When the electrical appliance fails, it is not easy to replace the components, which brings great difficulties to the maintenance of electrical equipment in the later stage.
And its wear resistance is poor. After curing, it will form a layer of elastic body with high gloss. This kind of colloid has poor wear resistance. If it is often worn, it will break, which will reduce its service life to a certain extent and affect Its application performance

Method used

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  • Mechanically reinforced organic silica gel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A mechanically reinforced silicone gel, comprising the following parts by weight of A component: 36 parts of hydrogen-terminated polysiloxane with a viscosity of 13,000cs, 4 parts of 13,000cs hydrogen-containing polysiloxane, and 13,000cs of hydroxyl-terminated fluorine-containing polysiloxane 30 parts of polysiloxane, 20 parts of boric acid, 10 parts of fumed silica, 10 parts of silicon micropowder, 5 parts of boron nitride, 0.02 part of methyl vinyl siloxane; component B: fluorine-terminated polysiloxane 100 parts of alkane, 10 parts of boric acid, 4 parts of γ-methacryloyloxypropyltrimethoxysilane, and 0.02 part of platinum catalyst.

[0025] The above-mentioned mechanically reinforced organosilicon gel for hydroxyl-containing surface is obtained by the following preparation method:

[0026] (1) Thoroughly mix boric acid with hydrogen-terminated polysiloxane with a viscosity of 13,000 cs, hydrogen-containing polysiloxane with a viscosity of 13,000 cs, and hydroxyl-te...

Embodiment 2

[0032] A mechanically reinforced silicone gel, comprising the following parts by weight of A component: 36 parts of hydrogen-terminated polysiloxane with a viscosity of 13,000cs, 14 parts of hydrogen-containing polysiloxane of 13,000cs, and 13,000cs of hydroxyl-terminated fluorine-containing polysiloxane 50 parts of polysiloxane, 5 parts of boric acid, 5 parts of fumed silica, 5 parts of silicon micropowder, 5 parts of boron nitride, 0.01 part of methyl vinyl siloxane; component B: hydroxyl-terminated fluorine-containing polysiloxane 60 parts of alkane, 5 parts of boric acid, 1 part of γ-methacryloyloxypropyltrimethoxysilane, and 0.01 part of platinum catalyst.

[0033] The above-mentioned mechanically reinforced organosilicon gel for hydroxyl-containing surface is obtained by the following preparation method:

[0034] (1) Thoroughly mix boric acid with hydrogen-terminated polysiloxane with a viscosity of 13,000 cs, hydrogen-containing polysiloxane with a viscosity of 13,000 c...

Embodiment 3

[0040] A mechanically reinforced silicone gel, comprising the following parts by weight of A component: 36 parts of hydrogen-terminated polysiloxane with a viscosity of 13000cs, 4 parts of 13000cs hydrogen-containing polysiloxane, and 13000cs of hydroxyl-terminated fluorine-containing polysiloxane 50 parts of polysiloxane, 10 parts of boric acid, 10 parts of fumed silica, 5 parts of silicon micropowder, 5 parts of boron nitride, 0.02 part of methyl vinyl siloxane; component B: fluorine-containing polysiloxane with terminal hydroxyl group 85 parts of alkane, 8 parts of boric acid, 2 parts of γ-methacryloyloxypropyltrimethoxysilane, and 0.01 part of platinum catalyst.

[0041] The above-mentioned mechanically reinforced organosilicon gel for hydroxyl-containing surface is obtained by the following preparation method:

[0042] (1) Thoroughly mix boric acid and hydrogen-terminated polysiloxane with a viscosity of 13,000 cs, hydrogen-containing polysiloxane with a viscosity of 13,0...

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Abstract

The invention discloses mechanically-enhanced organic silica gel and a preparation method thereof.The organic silica gel comprises a component A and a component B. The component A comprises 70-100 parts of hydroxyl-terminated silicone oil, 5-20 parts of boric acid, 15-25 parts of filler and 0.01-0.02 part of an inhibitor, and the component B comprises 60-100 parts of hydroxyl-terminated silicone oil, 5-10 parts of boric acid, 1-4 parts of an adhesion promoter and 0.01-0.02 part of a catalyst. The organic silicon gel specifically relates to a polyborosiloxane elastomer three-dimensional network structure formed by borate and hydroxyl-terminated polysiloxane; the preparation method is low in cost and easy to prepare. According to the invention, a hydrogen bond formed between a boron / oxygen coordination bond and B-OH can be fractured and reconstructed, so that the self-repairing coating has good self-repairing ability, and by adjusting the ratio of borate to hydroxyl-terminated polysiloxane and supplementing with the filler, the self-repairing coating has high mechanical strength, and the self-repairing ability of the self-repairing coating can be self-regulated.

Description

technical field [0001] The invention relates to a gel and a preparation method thereof, in particular to a mechanically reinforced organosilicon gel and a preparation method thereof. Background technique [0002] Silicone gel is widely used as a moisture-proof, shock-absorbing and insulating coating and potting material for electronic components, and has the functions of dust-proof, moisture-proof, shock-proof and insulation protection for electronic components and assemblies. The use of transparent gel to encapsulate electronic components can not only play the role of shockproof and waterproof protection, but also can see the components and use the probe to detect the failure of the components and replace them. The damaged silicone gel can be re-potted repair. [0003] Not only has good temperature resistance performance, but also its performance can be expanded to the field of use, especially in high and low temperature changes, the colloid remains unchanged, and the perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/08C08L83/05C08K3/38C08K3/36C08K7/26
CPCC08L83/08C08K2003/385C08L83/04C08K3/38C08K3/36C08K7/26
Inventor 彭为民谢熙威赵悦菊郭淼丁绍峰石金彪郑永立陈强赵春风郭渊汪笑龙张五福
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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