Advantages and disadvantages of thermal conductive silica gel.

advantages
1. Soft material, good compression performance, good thermal insulation performance, large adjustable range of thickness, suitable for filling cavity, both sides with natural viscosity, operability and maintainability;
2. The main purpose of the thermal conductive silicone film is to reduce the contact heat resistance between the surface of the heat source and the contact surface of the radiator, and the thermal conductive silica gel can fill the gap of the contact surface.
3. Since the air is a poor conductor of heat, it will seriously obstruct the transfer of heat between the contact surface, and the air extrusion interface can be made by adding a conductive silica gel between the heating source and the radiator.
4, a thermal conductive silicone, can improve the contact area between the heat source and heat sink full contact, truly the face-to-face contact. In temperature on the reaction can reach as far as possible little temperature difference;
5. The thermal conductivity of the thermal conductive silica gel is controllable and the thermal conductivity is better.
7. The process work difference between the thermal conductive silicone sheet and the structure is closed, and the difference between the heat sink and the heat dissipation structure is required;
8. The thermal conductive silica gel sheet has insulation performance (the characteristics need to be added in the production);
9. The effect of heat-conducting silica gel sheet with damping and absorbing sound;
10. The thermal conductive silicone chip has the convenience of installation, testing and repeatability.
disadvantages
Compared with silicone grease, thermally conductive silica gel has the following disadvantages:
1. Although the thermal conductivity is higher than that of the conductive silicone, the thermal resistance is also higher than that of the conductive silica gel.
2. The thermal conductive silicone sheet with a thickness of 0.5mm is complicated and the thermal resistance is relatively high;
3, thermal conductivity silicone grease a large scope of heat-resistant, respectively thermal conductive silicone - 60 ℃ ~ 300 ℃, the thermal conductive silicone piece - 50 ℃ ~ 220 ℃;
4. Price: the thermal conductivity of silicone grease has been widely used, and the price is lower, and the thermal conductive silica gel is more widely used in the thin and delicate electronic products such as laptop, and the price is slightly higher.
use
Electrical and electronic products used for the control board, the motor internal and external plate and floor MATS, electronic appliances, auto machinery, mainframe computers, notebook computers, DVD, VCD, and any material need to fill and heat dissipation module.
Species difference
Ordinary thermal conductive silica gel sheet, strong viscous thermal conductive silica gel sheet, silicone adhesive tape, and intermediate glass fiber conductive silica gel sheet. At present, the thermal conductivity of domestic thermal conductive silica gel is from 0.8w /M.K~8.0W/M.K, and there are three test criteria for thermal conductivity. The data obtained from different test standards will be different and so on.