What is the principle of heat-conductive paste? Does it conduct electricity?
2021-03-04
Thermal paste is a thermally conductive material that has been widely used in TVs, computers, refrigerators, communication equipment, electronic products, rice cookers, induction cookers, and other electrical appliances. The thermal paste is unobtrusive, but it is used in a wide range of applications where electrical conductivity is required. What is the principle of thermal paste? The principle of thermal conductivity is to fill the gap between the CPU and the heat sink so that the two can be in full contact and the heat can be transferred out during the work of the appliance. The main raw material of thermal grease is silicone, and then some thermal conductive materials are added. If too much thermal grease is used, the thick layer of silicone grease will hinder the heat transfer, which will not only have no thermal conductive effect but also speed up the burning of electrical appliances. Therefore, thermal grease can be used in the right amount, not the more it is applied, the better the thermal conductivity. Does thermal grease conduct electricity? Thermal grease is a kind of silicone grease material with thermal conductivity. In the workplace, with good quality thermal grease, the silicone oil "does not evaporate easily", while poor quality thermal grease will evaporate after a while, the surface will become dry and even cracked, reducing the thermal conductivity. Although thermal grease has good thermal conductivity, it is not electrically conductive and is an insulating material, so users can use it with confidence. In fact, not all thermally conductive pastes are not conductive. Some thermally conductive pastes use silver or aluminum powder as filler, and although this type of metal filler increases thermal conductivity, it increases conductivity because the particles are relatively large, which makes it easy for leakage to occur during use.
The longer the separation time, the better the thermal grease will be and the more secure it will be in electrical appliances.
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