Analysis of key factors affecting thermal conductivity of thermal gel

As an effective heat conduction material, thermally conductive gel plays an important role in the field of heat dissipation in electronic devices. However, its thermal conductivity is not static, but affected by a variety of factors. The following is a detailed analysis of several key factors affecting the thermal conductivity of thermal gel:

1. Application thickness:

Many customers do not care about the thickness when applying thermal conductive gel. Our company suggests that the application principle of paste material is thin thickness and uniform application. Thick material means low heat transfer efficiency and slow heat dissipation. Apply evenly to avoid residual air and reduce thermal resistance. ,

2. Viscosity and fluidity:

The viscosity and fluidity of the matrix material determine the dispersion degree of the filler and the processability of the gel. Proper viscosity and fluidity help to achieve uniform dispersion of the filler, thus improving the thermal conductivity of the gel.

3. radiator efficiency:

Many customers focus only on thermally conductive materials, but do not think about whether the radiator is suitable. For example: At the beginning, 2W/mk thermal conductivity gel was used on the power supply, and the thermal conductivity effect barely met the requirements. In order to improve and achieve better heat dissipation effect, a 5W/mk with high thermal conductivity was selected. The thermal conductivity effect of the two materials with a large difference in thermal conductivity did not show significant difference. It shows that the effective contact is good, and the reason for the judgment is that the radiator, because the radiator is small, the use of 2W/mk thermal conductivity gel has played its limited effectiveness, even if the use of 10~20W/mk thermal conductivity material is the same result, and the use of larger heat dissipation device verification, the effect is significantly improved.

4. Other factors:

In addition to the above factors, the thermal conductivity of the gel may be affected by other factors, such as the formulation design of the gel, production process, storage conditions, etc. These factors, although less direct than those mentioned above, also have an important impact on the thermal conductivity of the gel. Therefore, these factors need to be considered comprehensively when selecting and using thermal conductive gels to ensure that they can meet the heat dissipation requirements of specific applications.