▎ 摘　　要

NOVELTY - Composition includes polypropylene, intumescent flame retardant, compatibilizer, antioxidant, synergist and beta nucleating agent. The compatibilizer is ethylene-maleic anhydride copolymer. USE - Composition for preparing flame-retardant foamed polypropylene material. ADVANTAGE - The composition prepared flame-retardant foamed polypropylene material with halogen-free, environmentally friendly manner, has good flame-retardant performance, and can also ensure the mechanical properties, thermal properties, foaming properties and melt strength of the material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a flame-retardant foamed polypropylene material, which involves mixing polypropylene, intumescent flame retardant, compatibilizer, antioxidant, synergist and β-nucleating agent uniformly, carrying out extrusion granulation to obtain modified polypropylene pellets before foaming, and drying, using supercritical fluid carbon dioxide (CO2) to foam the modified polypropylene pellets to obtain foamed polypropylene pellets, where the compatibilizer is ethylene-maleic anhydride copolymer.