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Factors affecting thermal conductivity of thermal conductive silica gel sheet

2022-11-09 15:38:26

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The main base material of thermal conductive silica gel sheet is silica gel, which is a thermal conductive medium material synthesized by special process by adding various auxiliary materials such as

The main base material of thermal conductive silica gel sheet is silica gel, which is a thermal conductive medium material synthesized by special process by adding various auxiliary materials such as metal oxides. The following is a specific introduction of the factors affecting the thermal conductivity of thermal conductive silica gel sheet

1. Types and characteristics of polymer matrix materials: the higher the thermal conductivity of matrix materials, the better the dispersion of the filler in the basic, the better the degree of combination between them, so the thermal conductivity of the silica gel sheet will be better

2. Type of packing: the higher the thermal conductivity of packing will directly affect the thermal conductivity of silica gel sheet

3. The content of the filler: the distribution of the polymer filler determines the thermal conductivity of the thermal conductive silica gel sheet. When the content of the filler is small, the thermal conductivity effect is not obvious; When the direction of the heat conduction network chain is consistent with the direction of the heat flow, the heat conduction performance is the best. Therefore, there is a critical value of the amount of thermal conductivity filler.

4. The shape of the packing: the path that is easy to form the heat conduction order is whisker - fibrous - sheet - granular. The easier the packing is to form the heat conduction path, the better the thermal conductivity performance will be.

5. The combination of filler and substrate material interface characteristics: the higher the degree of combination of filler and substrate, the better the thermal conductivity, the selection of the appropriate coupling agent for the surface treatment of the filler, the thermal conductivity can be increased by 10%~20%


Author: Shenzhen Zhenzhixing Technology Co., Ltd.
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Factors affecting thermal conductivity of thermal conductive silica gel sheet
The main base material of thermal conductive silica gel sheet is silica gel, which is a thermal conductive medium material synthesized by special process by adding various auxiliary materials such as
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