Bi-component heat conduction silica gel and application thereof
A heat-conducting silicon, two-component technology, applied in the field of two-component heat-conducting silicone gel, can solve the problems of low production efficiency, insufficient elongation, insufficient material toughness, etc., to facilitate foam removal and operation, improve production efficiency, The effect of short curing time
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[0039] Example 1
[0040] A two-component thermally conductive silicone gel obtained by mixing and preparing the following raw materials in accordance with the ratio:
[0041] The ratio of raw material mass parts:
[0042] Agent A includes:
[0043] End-side vinyl silicone oil (vinyl content 0.45wt%) 22g
[0044] Alumina (global shape, particle size 15um) 78g
[0045] Platinum catalyst (5000ppm) 0.001g
[0046] Agent B includes:
[0047]
[0048]
[0049] Wherein, the hydrogen-containing silicone resin is prepared by the following method:
[0050] (1) Put 155 parts by mass of water and 0.30 parts by mass of hydrochloric acid into the reaction kettle, add 70 parts by mass of tetramethyldihydrodisiloxane, stir and reflux, at a stirring speed of 250-300 rpm;
[0051] (2) The condensed water was turned on and refluxed. When the temperature of the reaction solution was raised to 30°C, 720 parts by mass of methyltrimethoxysilane was dropped, and the temperature was continued to be raised to 50°C. ...
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[0054] Example 2
[0055] A two-component thermally conductive silicone gel obtained by mixing and preparing the following raw materials in accordance with the ratio:
[0056] Raw material mass fraction ratio:
[0057] Agent A includes:
[0058] End side vinyl silicone oil (vinyl content 0.45wt%) 20g
[0059] Alumina (global shape, particle size 15um) 80g
[0060] Platinum catalyst (5000ppm) 0.001g
[0061] Agent B includes:
[0062]
[0063]
[0064] Wherein, the hydrogen-containing silicone resin is prepared by the following method:
[0065] (1) Put 150 parts by mass of water and 0.4 parts by mass of hydrochloric acid into the reactor, add 70 parts by mass of tetramethyldihydrodisiloxane, stir and reflux, at a stirring speed of 250-300 rpm;
[0066] (2) The condensed water was turned on and refluxed, and when the temperature of the reaction solution was raised to 30°C, 700 parts by mass of methyltrimethoxysilane was dropped, and the temperature was continued to be raised to 50°C.
[0067] (...
Example Embodiment
[0069] Example 3
[0070] A two-component thermally conductive silicone gel obtained by mixing and preparing the following raw materials in accordance with the ratio:
[0071] Raw material mass fraction ratio:
[0072] Agent A includes:
[0073] End side vinyl silicone oil (vinyl content 0.45wt%) 18g
[0074] Alumina (global shape, particle size 15um) 82g
[0075] Platinum catalyst (5000ppm) 0.001g
[0076] Agent B includes:
[0077]
[0078]
[0079] Wherein, the hydrogen-containing silicone resin is prepared by the following method:
[0080] (1) Put 160 parts by mass of water and 0.1 parts by mass of hydrochloric acid into the reaction kettle, add 80 parts by mass of tetramethyldihydrodisiloxane, stir and reflux, at a stirring speed of 250-300 rpm;
[0081] (2) The condensed water was turned on and refluxed, and when the temperature of the reaction liquid was raised to 30°C, 750 parts by mass of methyltrimethoxysilane was dropped, and the temperature was continued to be raised to 50°C.
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