▎ 摘　　要

NOVELTY - Flame retardant composite material comprises a three-dimensional porous skeleton material, polyamide and magnesium hydroxide. The three-dimensional porous framework material has a three-dimensional network porous structure formed by self-assembly of graphene oxide and a reinforcing material. The polyamide and the magnesium hydroxide are supported on the surface of the three-dimensional porous framework material, and portion of the polyamide and the magnesium hydroxide are embedded in or pass through the pores of the surface of the three-dimensional porous framework material, and formed a three-dimensional interpenetrating network structure. The reinforcing material is carbon nanotubes or graphene fibers. USE - Flame retardant composite material for electronic device (claimed). ADVANTAGE - The flame retardant composite material has high thermal conductivity, high flame retardance and excellent mechanical property. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the flame retardant composite material, which involves mixing and self-assembling reinforcing material, the graphene oxide and the solvent, and then freeze-drying to obtain the three-dimensional porous framework material, and mixing and extruding three-dimensional porous framework material, the magnesium hydroxide and the polyamide monomers through reaction to obtain a flame retardant composite material.