Traditional heat conduction materials are mostly metals and metal oxides. With the development of scientific technology and production, many LED lamp housing products have higher requirements for heat conduction materials. I hope they have more sophisticated comprehensive functions, light weight, and chemical resistance. Strong, excellent electrical insulation, shock resistance, refined processing, etc. Thermally conductive and insulating polymer composite materials are more and more widely used because of their excellent comprehensive functions.

However, because polymer materials are mostly poor conductors of heat, they limit its application in heat conduction. Therefore, the development of new polymer materials with exquisite heat conduction functions has become the target of serious development of heat conduction materials. Especially in recent years, with the rapid development of high-power electronic and electrical products, there will inevitably be more and more problems due to product fever, resulting in reduced product efficacy and shortened operating life.

Thermally conductive fillers are mainly divided into two types: one is thermally conductive insulating fillers, such as metal oxide fillers and metal nitride fillers. The other is thermally conductive non-insulating fillers, such as carbon-based fillers and various metal fillers. The former is mainly used for electronic component packaging materials and other occasions that have high requirements for electrical insulation performance, while the latter is mainly used for applications that require low electrical insulation performance such as heat exchangers in chemical installations. The type of filler, the size and dispersion of the particle size, the amount of addition and the interface function between the filler and the matrix have an impact on the thermal conductivity of the composite material.