Single-component addition type high-temperature-resistant high-thermal-conductivity silica gel and preparation method thereof
A technology of high temperature resistance and addition type, which is applied in the field of one-component addition type high temperature resistance and high thermal conductivity silicone gel and its preparation field, and can solve the problems of thermal resistance, harsh storage conditions and poor thermal conductivity of thermally conductive gels that are not resistant to high temperature. , to achieve the effect of good cohesion, viscosity reduction, bulk strength and toughness improvement
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Embodiment 1
[0030] This embodiment provides a single-component addition type high temperature resistant high thermal conductivity silicone gel, which includes the following components in parts by weight: 80 parts of vinyl silicone oil, 2 parts of hydrogen-containing silicone oil for crosslinking agent, and 1900 parts of high thermal conductivity filler , 12 parts of treatment agent, 4 parts of catalyst, 4 parts of pigment.
[0031] Wherein, the above-mentioned vinyl silicone oil is vinyl-terminated polydimethylsiloxane with a vinyl content of 0.22 mmoles / g and a viscosity of 250 cSt;
[0032] Based on the total mass of the silicone gel, the above-mentioned hydrogen-containing silicone oil includes 1 part of terminal hydrogen-containing polydimethylsiloxane and 1 part of side hydrogen-containing polydimethylsiloxane; The Si-H content in the polydimethylsiloxane is 1.37mmoles / g, the viscosity is 14cSt, the Si-H content in the hydrogen-containing polydimethylsiloxane is 3mmoles / g, and the vi...
Embodiment 2
[0040] This embodiment provides a single-component addition type high temperature resistant high thermal conductivity silicone gel, which includes the following components in parts by weight: 80 parts of vinyl silicone oil, 3 parts of hydrogen-containing silicone oil for crosslinking agent, and 1900 parts of thermal conductive filler , 12 parts of treatment agent, 4 parts of catalyst, 4 parts of pigment.
[0041] Wherein, the above-mentioned vinyl silicone oil is vinyl-terminated polydimethylsiloxane with a vinyl content of 0.22 mmoles / g and a viscosity of 250 cSt;
[0042]Based on the total mass of the silicone gel, the above-mentioned hydrogen-containing silicone oil includes 1.5 parts of terminal hydrogen-containing polydimethylsiloxane and 1.5 parts of side hydrogen-containing polydimethylsiloxane, and the terminal hydrogen-containing polydimethylsiloxane The Si-H content in the polydimethylsiloxane is 1.37mmoles / g, the viscosity is 14cSt, the Si-H content in the hydrogen-...
Embodiment 3
[0050] This embodiment provides a single-component addition type high temperature resistant high thermal conductivity silicone gel, which includes the following components in parts by weight: 80 parts of vinyl silicone oil, 2 parts of hydrogen-containing silicone oil for crosslinking agent, and 1900 parts of thermally conductive filler , 12 parts of treatment agent; 4 parts of catalyst, 4 parts of pigment.
[0051] Wherein, the above-mentioned vinyl silicone oil is vinyl-terminated polydimethylsiloxane with a vinyl content of 0.19 mmoles / g and a viscosity of 400 cSt;
[0052] Based on the total mass of the silicone gel, the above-mentioned hydrogen-containing silicone oil is 2 parts of hydrogen-containing polydimethylsiloxane at the end and 2 parts of hydrogen-containing polydimethylsiloxane at the side, and 2 parts of hydrogen-containing polydimethylsiloxane at the end. The Si-H content in the polydimethylsiloxane is 1.37mmoles / g, the viscosity is 14cSt, the Si-H content in t...
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