For thermal conductive silicone sheets, is the higher the compression rate, the better?

Thermally conductive silicone sheet is an excellent thermal interface material, and it is also one of the main thermal interface materials on the market. It has been loved and sought after by people. So what kind of thermally conductive interface material is thermally conductive silicone sheet?

Thermally conductive silicone sheet, also known as thermally conductive silicone film, heat-dissipating silicone film, etc., is a gap-filling thermally conductive material made of silicone resin as the base material and adding heat-conducting, temperature-resistant, and insulating materials in a certain proportion. Between the heat source and the radiator, it acts as a thermal conduction medium. Due to its soft characteristics, it can remove the air between the interface, improve the thermal conductivity, and reduce the interface thermal resistance.

Thermal silicone sheet

Thermally conductive silicone sheet is widely praised due to its high thermal conductivity, low thermal resistance, insulation, flame retardant and shock absorption, etc. When people purchase thermally conductive silicone sheet, they need to consider the parameters of thermally conductive silicone sheet. There is a saying: buy it. Thermal conductivity, engineering looks at thermal resistance. The thermal conductivity of thermally conductive silicone sheet is largely dependent on its thermal resistance, so when people purchase thermally conductive silicone sheet, in addition to providing the required parameters, they also require compression rate. What is the effect of thermal conductive silicone sheet?

Thermally conductive silicone sheet is a kind of thermally conductive material for high compression applications. The compression rate has a great influence on the thermally conductive silicone sheet. Just as the thermally conductive silicone sheet with softer hardness has a lower compression rate, the thermally conductive silicone sheet with higher hardness has a lower compression rate. It is higher, but it is convenient for mounting operations. For example, the thinner the thickness of the thermally conductive silicone sheet, the lower the thermal resistance and the better the thermal conductivity. In one sentence, the higher the compression rate in the limit of the thermally conductive silicone sheet, The smaller the thermal resistance, the better the thermal conductivity. Some people here may say that the higher the compression of the thermally conductive silicone sheet, the better the thermal conductivity?

In fact, this statement is wrong, because the above also emphasizes that the higher the compression rate in the limit of the thermal conductive silicone film, the smaller the thermal resistance, the better the thermal conductivity, but once the limit is exceeded, the thermal conductive silicone film loses its elasticity and cannot Return to the normal state in time, so the compression rate of the thermally conductive silicone sheet is not as low as possible. You need to choose according to your own product situation.