Effect of Thermal Grease on Heat Dissipation Efficiency

In modern electronic devices, heat dissipation issues are becoming increasingly prominent. Whether it is a high-performance computer, game console or smartphone, good heat dissipation performance is the key to ensuring stable operation of the device.

What is Thermal Grease?

Thermal Grease is a silicon-containing material, usually a mixture of silicone oil and thermally conductive fillers. Its main function is to fill the tiny gaps between electronic components and radiators, reduce thermal resistance, and thus improve heat conduction efficiency.

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Selection criteria for Thermal Grease

Choosing the right Thermal Grease is crucial, and the following are several key criteria:

Thermal conductivity: Products with a thermal conductivity of more than 1.0 W/m·K can usually meet most application requirements.

Viscosity: Appropriate viscosity ensures that Thermal Grease is evenly distributed when applied and maintains a certain degree of adhesion.

Stability: High temperature stability and chemical inertness are key characteristics to ensure that Thermal Grease does not fail during long-term use.

Electrical resistance: For some applications, the electrical resistance of Thermal Grease also needs to be considered to avoid problems such as short circuits.

Effect of Thermal Grease on Heat Dissipation Efficiency

Thermal Grease significantly improves heat dissipation efficiency by reducing the thermal resistance of the thermal interface. Specific influencing factors include:

Reduced thermal resistance: Thermal Grease fills the gap between the component and the heat sink, reducing the interference of low thermal conductivity materials such as air, thereby reducing the overall thermal resistance.

Temperature uniformity: High-quality Thermal Grease can be evenly distributed on the thermal interface, making the heat distribution on the heat sink more uniform and preventing hot spots from forming.

Extending equipment life: By improving heat dissipation efficiency, Thermal Grease helps to reduce the operating temperature of the device, thereby extending the service life of electronic components and reducing failure rates.