What factors will affect the performance of thermal conductivity gel?

The performance of thermal conductive gel is affected by a variety of key factors. The following is a detailed analysis of these factors:

1. Selection and characteristics of thermal filler
Type of filler: The type of filler used in a thermal conductive gel has a decisive influence on its properties. Fillers with high thermal conductivity, such as alumina and carbon fiber, can significantly improve the thermal conductivity of the gel.
Filler shape and size: The shape and size of the filler also affect the properties of the thermal conductive gel. The optimized packing shape and size can provide a larger contact area and a more efficient heat conduction path.
Filler content and distribution: The content and distribution uniformity of filler in the gel are very important for thermal conductivity. The right amount of filler and even distribution can ensure the efficient transfer of heat.

2. Properties of matrix materials
Chemical stability: The chemical stability of the matrix material determines the performance retention rate of the thermal conductivity gel in long-term use. The stable matrix material can resist the erosion of harsh environment and maintain the thermal conductivity.
Thermal stability: The thermal stability of the matrix material is very important for the performance of thermally conductive gels at high temperatures. The high thermal stability of the matrix material ensures that the gel does not fail at high temperatures.
Viscosity and fluidity: The viscosity and fluidity of the matrix material will affect the dispersion of the filler and the processability of the gel. Proper viscosity and fluidity help to achieve uniform dispersion and good processability of the filler.

3. Application environment and conditions
Operating temperature: The thermally conductive gel needs to be stable within the operating temperature range of the equipment. Different working temperatures have different requirements on the thermal conductivity of gels.
Stress and pressure: In practice, thermally conductive gels may be subjected to stress and pressure. These external conditions can affect the thermal conductivity and mechanical stability of the gel.

4. Interface thermal resistance and contact quality
Interfacial thermal resistance: The interfacial thermal resistance between the thermal conductive gel and the contact surface will affect the overall heat conduction efficiency. The interfacial thermal resistance can be reduced by optimizing the treatment of the filler surface or selecting the matrix material with better interfacial affinity.
Contact quality: The contact quality between the gel and the contact surface also affects its thermal conductivity. Good contact quality ensures efficient heat transfer.