Industry dynamic

What are the factors that affect the thermal conductivity of thermal grease?

2021-03-26

What are the factors that affect the thermal conductivity of thermal grease?

 Many electronic products are affected by the high temperature generated by the work, which directly leads to a rapid shortening of the product's service life, or even directly stop working after the high temperature, but the existing heat dissipation system can not meet the needs of the work at all until the emergence of thermal conductive silicone grease, which effectively solves the heat dissipation problem, and reflects the importance of thermal conductive silicone grease. So the thermal conductivity of thermal grease is very important, so what factors will affect the thermal conductivity of thermal grease?

First, the rate of oil leaving

If the compatibility of the two materials is poor, the phenomenon of oiling will occur after a short period of storage, although it can be stirred before application and continue to be used, after using it on the product, with the extension of time, the thermally conductive silicone grease used on the product will still be free of silicone oil in a short period. Therefore, users should first understand the parameters of the free rate of thermal conductive silicone grease.

Second, viscosity

The viscosity is also one of the reasons why it is said that the viscosity is determined by the filler and base material, if the filler content becomes larger or reduced, it will affect the viscosity and also affect the thermal conductivity, but the viscosity cannot be used as an indicator to judge the size of the thermal conductivity.

Third, viscosity

The viscosity here is not adhesive, we all know that thermal conductive silicone grease will not be cured, viscosity refers to the adhesion, if the produced thermal conductive silicone grease is not a little viscous, too dry, it can not be closely attached to the product, can not be closely attached to the product, then how to quickly disperse the heat generated by the product work, so the poor viscosity of the thermally conductive silicone grease is easy to separate from the product after use, which greatly reduces the thermal conductivity effect. Therefore, a poorly viscous thermal grease will easily separate from the product after use, which will greatly reduce the thermal conductivity.


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