What is the role of thermal conductive silicone grease?

Thermal conductive silicone grease, commonly known as thermal conductive paste, is a type of material that fills the gap between the heat source and the heat sink. Thermal conductive silicone grease is a thermal conductive filling material made from silicone oil as the base material and added with thermal conductive, insulating, and temperature resistant materials. There are many applications involving thermal conductive silicone grease, such as power consuming electronic components in electronic devices, precision instruments, new energy vehicles, household appliances, and even some military and aerospace fields.

In reality, even if two clean and smooth surfaces come into contact with each other, there is still a gap between them. There is a large amount of air in the gap, and air is a poor conductor of heat, which hinders the conduction of heat between the two. The use of thermal conductive silicone grease is to fill the gap between the two, making the conduction of heat smoother.

The thermal conductivity coefficient is a parameter that measures the thermal conductivity performance of a material. The higher the value of the thermal conductivity coefficient, the higher the thermal conductivity speed of the material, that is, the better the thermal conductivity performance. The thermal conductivity performance and price of thermal conductive silicone grease are often the main considerations of the thermal conductivity coefficient of the product.

The main function of thermal conductive materials is to reduce the contact thermal resistance between the heat source and the heat sink. Thermal conductive materials themselves have thermal resistance, and when heat is transmitted at both ends of the thermal conductive material, it will also be blocked. Therefore, thermal conductive silicone grease cannot be applied with a thick layer, which will actually reduce the thermal conductivity of the thermal conductive silicone grease.