▎ 摘　　要

NOVELTY - A protective material comprises 35-45 pt. wt. separator polypropylene from spent battery, 5-8 pt. wt. copper powder from spent battery, 4-6 pt. wt. nanoboron fiber, 2-4 pt. wt. fluorinated graphene, 1-3 pt. wt. coupling agent, 3-8 pt. wt. hyperbranched polyphosphoramidate, 15-25 pt. wt. polyphenylene sulfide resin, 3-5 pt. wt. polybenzimidazole, 1-3 pt. wt. 1,3-bis(ethylene oxide methyl)-5-(2-propenyl)- 1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 1-3 pt. wt. 2,5-diaminobenzenesulfonic acid, 0.3-0.6 pt. wt. aluminum chloride, 0.3-0.5 pt. wt. polyphosphoric acid, 0.1-0.3 pt. wt. phosphorus pentoxide, 1-3 pt. wt. methacryloyl chloride, 2-4 pt. wt. 1,2-divinylbenzene, and 5-8 pt. wt. additive. USE - Protective material is used for power battery of new energy vehicle. ADVANTAGE - The protective material has excellent mechanical property, flame-retardant, aging resistance, and thermal conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the protective material, which involves mixing the separator polypropylene, polyphenylene sulfide resin, polybenzimidazole, and hyperbranched polyphosphoramidate, crushing through a 100-300 mesh sieve and mixing with raw materials to obtain a mixed material, adding the mixed material to a twin-screw extruder and extruding.