Thermoplastic halogen-free flame-retardant material and preparation method thereof

The invention discloses a thermoplastic halogen-free flame-retardant material and a preparation method thereof, and belongs to the field of flame-retardant materials, wherein the thermoplastic halogen-free flame-retardant material comprises the following raw materials: an ethylene-vinyl acetate copolymer, polyethylene, a maleic anhydride grafting material, a flame retardant agent, a lubricant anda composite antioxidant. According to the present invention, the ethylene-vinyl acetate copolymer, the polyethylene and the maleic anhydride grafting material are used as the base resin, and the flameretardant system comprising magnesium carbonate and magnesium hydroxide, the lubricant and the composite antioxidant are added, such that the compatibility among the raw materials is improved so as to improve the flame retardancy, the breaking strength and the elongation of the polyolefin insulating material; and compared to the traditional polyolefin insulating material, the material of the present invention has advantag