What is the significance of reducing thermal resistance?

The heat source and the heat sink of the radiator are two smooth and flat surfaces, and there is no gap between the two, but the heat dissipation effect is very poor. In fact, the main reason is that there are many gaps or pits between the two, and the air is hot. Poor conductors, if the two are in direct contact, their contact thermal resistance is very large, which leads to a decrease in heat transfer efficiency, resulting in unsatisfactory heat dissipation.

Thermally conductive material is a thermally conductive interface material that can effectively reduce contact thermal resistance, improve heat transfer efficiency, and thereby improve thermal conductivity. The thermally conductive material generally acts on the heat source and the radiator to fill the gap between the two and eliminate the air between the interface , Reduce contact thermal resistance, improve heat transfer efficiency, and improve heat dissipation effect.

It is not enough to reduce the thermal resistance of contact with light. It is also necessary to reduce the thermal resistance of the material. As the old saying goes: purchase depends on thermal conductivity, engineering depends on thermal resistance. Thermal resistance is one of the factors that affect the thermal conductivity of thermally conductive materials. When heat passes through the thermally conductive material, Will be hindered by thermal resistance. The greater the thermal resistance, the worse the thermal conductivity. In addition to the different thermal resistances, the thermal conductivity of the two same thermal conductivity materials will be better. Choose one with low thermal resistance.