The thermal conductivity of thermal grease is the most commonly used parameter in our electronic product heat conduction and heat dissipation industry. It is also a synonym for expressing the quality of thermal conductive materials. Many times, when we mention “thermal resistance”, we will feel a little unfamiliar with this word. The following thermal conductive material manufacturer Youdao New Materials will explain the meaning of thermal resistance in thermal conductive materials.
The influence of thermal resistance on the thermal conductivity of thermal conductive silicone grease thermal conductive materials
When heat passes through a certain medium in the form of heat conduction, the resistance value encountered by heat in this medium is called thermal resistance, and the unit is K (℃)/W. Generally speaking, the larger the thermal conductivity of the thermal conductive material, the smaller its thermal resistance value. However, the contact area and thickness are also one of the factors that affect thermal resistance. Taking thermal conductive silicone sheet as an example, since the thermal resistance of air is very large, the gap between the heat source and the heat sink can be filled by adding thermal conductive silicone sheet to apply a certain pressure. The compressible performance enables the thermal conductive silicone sheet to achieve the purpose of increasing the contact area and effectively reduce the heat transfer distance and the thermal resistance between the heat source and the heat sink.
