What does the thermal resistance of thermal conductive materials affect?

The conventional treatment method is to fill the heat source and the heat sink with a thermally conductive material to fill the gap between the interface and remove the air between the gaps, thereby improving the heat transfer efficiency and improving the heat dissipation effect. This is also the main function of the thermally conductive material. Thermal conductivity is one of the parameters to measure the thermally conductive material. The greater the thermal conductivity, the stronger the thermal conductivity of the material.

There is an old saying in the industry: purchases look at thermal conductivity, and engineering looks at thermal resistance. Most purchasers will use the thermal conductivity as a reference when choosing thermally conductive material , but engineers’ opinions are different, although thermal conductivity is a measure of material thermal conductivity. Performance, but there are also other parameters that affect its performance, such as thermal resistance.

Every kind of thermally conductive material has thermal resistance. The smaller the thermal resistance, the better the thermal conductivity of the thermally conductive material, and vice versa. Why is this?

Simple explanation: a water pipe connecting two ports, the larger the water pipe, the greater the water flow that it can pass through, which also means the more water can circulate at the same time, but the water pipe has some scale, and the more scale, The more it hinders the flow of water, which results in slower water flow. Then compare the size of the water pipe to the thermal conductivity of the thermally conductive material , and the scale to thermal resistance. It can be concluded that the smaller the thermal resistance, the better the thermal conductivity. Why different thermal resistance, other thermally conductive material with the same parameters, the smaller the thermal resistance, the better the thermal conductivity.