High-toughness PA10T composite heat radiation material for LED lamp and preparation method thereof

The invention provides a high-toughness PA10T composite heat radiation material for LED lamp. The high-toughness PA10T composite heat radiation material for LED lamp is prepared from the following raw materials in part by weight: 40-42 parts of magnesium oxide, 20-22 parts of boron nitride, 2-3 parts of short cut glass fibre, 30-32 parts of polyamide PA, 7-8 parts of alumina whisker, 0.3-0.5 parts of rare earth magnesium powder, 1-2 parts of vanadium oxide, 1-1.5 parts of boron oxide, 2-3 parts of ultrahigh molecular weight polyethylene resin, 3-4 parts of polyvinyl butyral, 7-8 parts of ethanol and 3-4 parts of SEBS. The composite heat radiation material provided by the invention employs short cut glass fibre and alumina whisker, and after modification, the heat conduction coefficient and mechanical properties of the composite material are improved, and the electrical property is maintained at a high level; rare earth magnesium powder, vanadium oxide, boron oxide and ultrahigh molecular weight polyethylene resin are used, so that thermal diffusivity and toughness of the material are improved. The composite material provided by the invention has good electrical property, mechanical and chemical properties, and low cost and is not easy to be broken.