▎ 摘　　要

NOVELTY - The utility model claims a high impact-resistant flame-retardant insulating plastic, applied to mobile phone protective shell, comprising a PP plastic base layer, graphene radiating layer set on the surface of the PP plastic base layer, a silicon carbide inflaming retarding layer set on the lower surface of the PP plastic base layer; a first polycarbonate material layer set on the outer surface of the graphene radiating layer; a second polycarbonate material layer set on the outer surface of the silicon carbide flame retardant layer; the outer surfaces of the first polycarbonate material layer and the second polycarbonate material layer are provided with an arc-shaped groove and an arc-shaped bulge connected with the arc-shaped groove; the curvature radius of the arc-shaped groove and the arc-shaped bulge are the same; the 800-880J/m2-impact strength of the first polycarbonate material layer and the second polycarbonate material layer are . Compared with the existing technology, the plastic provided by the utility model not only has very high impact resistance and insulating performance, but also has good radiating and flame retardant performance.