▎ 摘　　要

NOVELTY - A composition for flame-retardant composite material comprises 3-45 wt.% flame retardant and 55-97 wt.% graphene. USE - Composition used for flame-retardant composite material. ADVANTAGE - The composition has good heat stability, good flame retardant property, and small amount of residual deformation at 600 degrees C. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) graphene flame-retardant foam comprising flame retardant foam graphene and graphene-containing flame retardant, where the content of the flame retardant is 3-45 wt.%, and the amount of graphene is 55-97 wt.%, and the average pore diameter of the flame retardant foam graphene is 10-100 mu m; and (2) preparation of graphene flame-retardant foam comprising contacting graphene oxide and flame retardant in the presence of a solvent to obtain solution A, freeze the solution A, and drying; and reducing to obtain the product.