Highly thermally conductive filler: Is alumina thermally conductive?

Alumina powder is an inorganic non-metallic material, alumina thermal conductive filler powder is to different systems with the addition of thermally conductive compound powder to achieve a certain thermal conductivity effect of the thermal conductivity of the filler material, so the alumina powder has good thermal conductivity, alumina powder as well as its "brothers" Aluminum Nitride Powder widely used in the application of thermally conductive interface raw materials. In practice, Al2O3 powder filler can be used alone or mixed with other fillers such as AIN, BN and so on. Usually resins, silicone and other flexible materials are widely used in electronic materials, but usually these materials are poor conductors of heat, so they need to add some thermal conductive filler to increase their thermal conductivity. Although the thermal conductivity of polymer thermal conductivity filler alumina is not high, but can basically meet the "thermal conductivity interface materials, thermally conductive engineering plastics and aluminum-based copper-clad plate and other areas of filler" applications, can be used as a thermally conductive filler for the preparation of thermally conductive insulating adhesive, potting adhesive, and other polymer materials, thermally conductive alumina can be widely used in silicone, potting adhesive, polyurethane, epoxy resins, plastics, rubber, and other flexible materials. Aluminum oxide can be widely used in silicone, potting adhesive, polyurethane, epoxy resin, plastics, rubber thermal conductivity, thermal conductive plastics, high thermal conductivity silicone composite powder filler, heat dissipation, and other different materials in the thermal conductivity of powder materials.

Thermally conductive alumina is generated under high temperature conditions of white powder crystals, its crystalline powder many, used for high thermal conductivity compound powder spherical alumina, spherical alumina, high purity alumina, composite alumina and so on. Ultra-high thermal conductivity composite powder must have a narrow particle size distribution, good particle size stability, high thermal conductivity K value, coupling modification of the filler portion of high characteristics. Generally speaking, if the average particle size of the thermally conductive filler powder can be controlled within a reasonable range, the thermal conductivity can reach between 3-10W/(m*K) according to different filling amounts.