Flame-retardant composite material, preparation method thereof and electronic equipment

The invention discloses a flame-retardant composite material, a preparation method thereof and electronic equipment. The flame-retardant composite material comprises a three-dimensional porous framework material, polyamide and magnesium hydroxide, the three-dimensional porous framework material has a three-dimensional net-shaped porous structure formed by self-assembly of graphene oxide and a reinforcing material; at least part of polyamide and magnesium hydroxide are loaded on the surface of the three-dimensional porous framework material, and at least part of polyamide and magnesium hydroxide are embedded into or penetrate through holes in the surface of the three-dimensional porous framework material to form a three-dimensional interpenetrating network structure; wherein the reinforcing material is selected from at least one of carbon nanotubes and graphene fibers; the mass of the three-dimensional porous framework material is 0.5%-15% of the mass of the polyamide, and the mass of the magnesium hydroxide i