ATO powder-mixed high-performance organic silicon resin-polymethyl methacrylate composite material for LED packaging and preparation method of composite material

The invention discloses an ATO powder-mixed high-performance organic silicon resin-polymethyl methacrylate composite material for LED packaging. The composite material is a high-performance material formed by conducting polymerization solidification on vinyl phenyl silicon oil, hydrogen-containing silicon resin vinyl silicon resin and methyl methacrylate, and thus has both the advantages of organic silicon resin and methyl acrylate; the composite material is mixed with ATO and graphene mixed powder, and the mixed powder is coated with silica sol subjected to surface treatment with a silane coupling agent, so that the transparency and the heat-resisting, antistatic and anti-ultraviolet aging properties of the composite material can be greatly improved; the prepared composite material is high in mechanical property and optical property, stable to heat, applicable to high-power LEDs, and long in service life.