"Thermal conductive silicone film" is a kind of thermal conductive medium material synthesized by special technology, which is based on silica gel and added with metal oxides and other auxiliary materials. In the industry, it is also called thermal conductive silicone pad, thermal conductive silicone film, soft thermal conductive pad, thermal conductive silicone pad and so on. It is a design project specially designed for heat transfer through cracks. It can fill the gap, complete the heat transfer between the heating part and the heat dissipation part, and also play the role of insulation, shock absorption, sealing, etc. It can meet the design requirements of miniaturization and ultra-thin equipment. It is a kind of excellent thermal conductive filling material with excellent workmanship and usability, wide application range of thickness.
1. The material is soft, the compression performance is good, the thermal conductivity and insulation performance is good, the thickness of the adjustable range is relatively large, suitable for filling the cavity, two sides have natural viscous, operability and maintainability are strong;
2. The main purpose of choosing the thermal conductive silicone film is to reduce the contact thermal resistance between the heat source surface and the contact surface of the heat sink device. The thermal conductive silicone film can fill the gap between the contact surface well.
3. Because air is a bad conductor of heat, it will seriously hinder the transfer of heat between contact surfaces. Adding thermal conductive silicone film between heat source and radiator can extrude air from contact surfaces.
4. With the supplement of thermal conductive silicone film, the contact surface between heat source and radiator can be fully contacted, and the real face-to-face contact can be achieved.
5. The thermal conductivity of the thermal conductive silicone film is adjustable and its thermal stability is better.
7. The structure of thermal conductive silicone film can be bridged to reduce the technological differences of radiators and radiator components.
8. Thermal conductive silicone film has insulation performance (which requires adding appropriate materials in the process of production).
9. Thermal conductive silicone film has the effect of shock absorption and sound absorption.
10. Thermal conductive silicone film is easy to install, test and reuse.
shortcoming
Compared with thermal conductive silica grease, thermal conductive silica gel has the following disadvantages:
1. Although the thermal conductivity is higher than that of thermal conductive silica gel, the thermal resistance is also higher than that of thermal conductive silica gel.
2. The process of thermal conductive silicone film with thickness less than 0.5mm is complex and its thermal resistance is relatively high.
3. Thermal conductive silicone grease has a wider range of temperature resistance. They are thermal conductive silicone grease - 60 ~300 C and thermal conductive silicone film - 50 ~220 C, respectively.
4. Price: Thermal conductive silicone grease has been widely used, and the price is low. Thermal conductive silicone film is mostly used in thin, small and precise electronic products such as notebook computers, with a slightly higher price.
purpose
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Control motherboard for electronic and electrical products, internal and external motor pads and footpads, electronic and electrical appliances, automotive machinery, computer mainframe, notebook computers, DVD, VCD and any materials needed to fill and heat dissipation module.
Category distinction
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Ordinary thermal conductive silicone film, strong viscous thermal conductive silicone film, back silicone cloth thermal conductive silicone film, with glass fiber thermal conductive silicone film in the middle. At present, the thermal conductivity of domestic thermal conductive silicone film is from 0.8W/M.K to 8.0W/M.K. There are three testing standards for thermal conductivity, and the data obtained by different testing standards will be different, etc.
