High-thermal-conductivity insulating silica gel gasket and preparation method thereof
An insulating silica gel, high thermal conductivity technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve the problems of high price and low thermal conductivity, achieve high thermal conductivity, reduce costs, and broaden the scope of application.
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[0035] The present invention also proposes the preparation method of the above-mentioned high-conducting insulating silicone gasket, including the following steps: according to the weight ratio, the respective components are determined, and the vinyl silicone oil, heat-conducting filler, modifier is solid vacuum, and the base is obtained. Glue; then mixed the base gum, crosslinking agent, inhibitor, and mixed 20-30 min, and finally mixed with a platinum catalyst for 15-20 min, resulting in a mixed rubber, and then placed on the calapping machine and passed a certain temperature gradient prolonged curing molding. The heat-conductive silica gasket is obtained.
[0036] Preferably, the temperature range of the translator boofer is divided into three temperature sections of 60-80 ° C, 90-110 ° C, 120-150 ° C.
Example Embodiment
[0037] Example 1
[0038] High heat insulating silicone gasket, the raw material comprises 100 parts by mass: 500 MPa.s of the vinyl silicone oil, 1500 modified spherical alumina, 500 nanoside, 3 parts of 202 high hydrogen silicone oil, UC- 2 parts of 616 terminal hydrogen silicone oil, 3 parts of hexamethyl silicon, 1 platinum catalyst, 0.05 servic alklene inhibitor;
[0039] Among them, in the preparation of modified spherical alumina, dodechacmethoxysilane is mixed with methanol, water, and ammonia water regulates pH to alkaline, and spherical alumina is added, and the temperature is warmed to 75 ° C, stirring is stirred for 3 h, Cooled to room temperature, then washed 3 times with methanol and vacuum filtration, 80 ° C for 24 h to obtain diethyltrimethoxysilane-modified spherical alumina; wherein dodechamethoxysilane and spherical alumina were obtained. The mass ratio is 4: 100.
[0040]The above-mentioned preparation method of the above high-conducting insulating silica, incl...
Example Embodiment
[0042] Example 2
[0043] High thermal insulating silicone gasket, the raw material comprises: 500 mPa.S vinyl silicone oil, 700 modified spherical alumina, 100 parts of cubic boron, 202 high hydrogen-containing silicone oil, UC-616 1.5 parts of the hydrogen silicone oil, 4 parts of vinyl triethoxysilane, 1 platinum catalyst, or 0.05 servic alklene inhibitors;
[0044] Among them, in the preparation of modified spherical alumina, dodechacmethoxysilane is mixed with methanol, water, and ammonia water regulates pH to alkaline, and spherical alumina is added, and the temperature is warmed to 75 ° C, stirring is stirred for 3 h, Cooled to room temperature, then washed 3 times with methanol and vacuum filtration, 80 ° C for 24 h to obtain diethyltrimethoxysilane-modified spherical alumina; wherein dodechamethoxysilane and spherical alumina were obtained. The mass ratio is 3: 100.
[0045] The above-mentioned preparation method of the above high-conducting insulating silica, including t...
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