What is thermal grease? What does thermal grease do?

What is thermal grease?

 Thermal grease, commonly known as heat dissipation paste or thermal paste, is a thermally conductive silicone grease compound made of silicone as the main raw material and added with materials with excellent heat resistance and thermal conductivity. It is a high thermal conductivity insulating silicone material, which has the characteristics of low oil separation (tending to zero), high and low temperature resistance, water resistance, ozone resistance, and weather aging resistance. Thermal grease almost never cures, and can be maintained in the grease state of use for a long time at a temperature of -50°C~+230°C, which is very suitable as a gap filling heat transfer medium for electronic components.

What is thermal grease used for?

The main purpose of thermal grease is to fill the small gap between the heating element and the heat dissipation facilities, improve the heat conduction efficiency, and ensure the stability of the electrical performance of electronic instruments and meters. Specifically, thermal grease is widely used in the following fields:

1. **Electronic products**: such as computers, communication equipment, LED and integrated lights, TVs, etc., especially for heat dissipation of high-performance chips such as CPUs and GPUs. These chips generate a lot of heat during operation, and the thermal grease fills the gap between the chip and the heat sink, improving the heat transfer efficiency and ensuring that the chip operates at a safe temperature.

2. Power electronics: High-power power electronics, such as inverters, frequency converters, etc., also require efficient heat dissipation systems. Thermal grease forms a thermal conduction channel between the modules of these devices and the heat sink, helping to quickly dissipate the heat generated and ensure stable operation of the equipment.

3. **Automotive Industry**: In the automotive industry, components such as engines, transmissions, and battery packs generate a lot of heat when they work. The use of thermal grease can improve the heat dissipation of these components, extend their service life, and improve the overall performance of the car.

4. **LED Lighting Equipment**: The heat dissipation of LED luminaires is crucial for their longevity and brightness stability. Thermal grease can fill the gap between the LED chip and the heat sink, improve the heat conduction efficiency, reduce the temperature of the LED chip, and thus extend the service life of the LED lamp.

5. **Power Equipment**: Power equipment such as high-voltage switchgear and cable terminal connectors also need to be dissipated. Thermal grease can be applied to the heat dissipation contact interface of these devices to improve the heat dissipation effect and ensure the stable operation of the equipment.

In summary, thermal grease has become an important material to improve the heat dissipation performance of various heat sinks or equipment due to its excellent thermal conductivity and wide application adaptability. It can not only effectively protect electrical components, but also improve the operating efficiency and stability of equipment.