Why do some thermally conductive silicone sheets need adhesive treatment?

In the process of industrial production, machine heating is a normal phenomenon, which occurs in various parts of the world. Although it is normal for the machine to heat up, if the machine heats up severely, it may cause the machine to crash or even short-circuit the circuit, which affects the reliability of the machine. Sexuality and security risks.

The heating of the machine is mainly due to the fact that a part of the energy is lost when the electric energy is converted into other energy during operation, and a large part of this part of the energy is dissipated in the form of heat. The air is a poor conductor of heat. If the temperature has been accumulating and not timely If the temperature of the machine is too high, it will cause problems, and the temperature needs to be controlled in time.

Thermally conductive silicone sheet is a kind of soft silicone as the base material. It is a thermally conductive gasket made of a certain proportion of thermally conductive, temperature-resistant and insulating materials. It has high thermal conductivity, low interface thermal resistance, insulation, and resistance to cold and heat shock It acts between the heating element and the radiator, fills the gap between the gap and removes the air at the interface, reduces the contact thermal resistance, improves the thermal conductivity, and can also play the role of insulation, shock absorption, and sealing. It is widely used Filling material for thermal gaps in electronic products.

TheThermally conductive silicone sheet itself is self-adhesive, and the conventional delivery is in the form of sheet or roll material. Some manufacturers need to apply adhesive treatment to the thermal conductive silicone film, although the thermal conductive silicone film will be heated due to the adhesive treatment. The increase in resistance leads to a decrease in thermal conductivity, so why do you have to apply adhesive treatment when you know that thermal conductivity will decrease?

The Thermally conductive silicone sheet is mainly used to fill the gap between the radiator and the heat source, and eliminate the air between the gap, so that the radiator and the heat source can be in close contact. However, not all planes are placed horizontally. Some heat sources may be The design should be placed on a vertical or inclined surface, so there may be the possibility of slipping during use or transportation. At the same time, the heating source plane may be smooth and flat. Although the thermal conductive silicone sheet has self-adhesive properties, the adhesion is low. It is also easy to be displaced under external force.

The main purpose of the thermal conductive silicone film is to make the thermal conductive silicone film to be firmly fixed on the flat surface, and it is not easy to fall under the condition of external force. The thermal conductive silicone film back adhesive needs to apply an adhesive on its surface, but this will increase its Thermal resistance, so it will cause the thermal conductivity of the Thermally conductive silicone sheet to decrease, but it must be fixed on the surface.