▎ 摘　　要

NOVELTY - Composite material comprises 30-50 pts. wt. acrylonitrile-butadiene-styrene copolymer, 50-80 pts. wt. modified magnesium oxide, 0.1-20 pts. wt. modified graphene and 0.01-1 pts. wt. salicylic acid metal complex, where the modified magnesium oxide includes magnesium oxide and titanate coupling agent in weight ratio of (50-100):1, the modified graphene includes graphene and aluminate coupling agent in weight ratio of (50-150):1, the organic content of modified magnesium oxide is 1-10%, the organic content of modified graphene is 0.1-3%, the salicylic acid metal complexes include copper (II) salicylate complexes and rare earth salicylate in weight ratio of (1-3):1. USE - The composite material is useful for preparing 5G fiber distribution box (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing composite material, comprising (i) modifying magnesium oxide with titanate coupling agent to obtain modified magnesium oxide, (ii) modifying graphene with aluminate coupling agent to obtain modified graphene, and (iii) blending acrylonitrile-butadiene-styrene copolymer, modified magnesium oxide and modified graphene, extruding and pelletizing.