▎ 摘　　要

NOVELTY - Preparing graphene/styrene-butadiene rubber modified low-density polyethylene, comprises 100 pts. wt. polyethylene, 2-10 pts. wt. butyl benzene rubber and 2-6 pts. wt. graphene as main material, adding 0.3-1% dispersing agent with polyethylene, mixing at high speed for 10-20 minutes, adding butyl benzene rubber and graphene, to obtain main material, adding 0.15-0.30% compatibilizer, 0.3-0.1% antioxidant, mixing at high speed for 5-15 minutes to obtain mixed material, reacting in a double-screw extruder at 180-210 degrees C for 5-10 minutes, extruding, cooling and granulating. USE - The low-density polyethylene is useful for 3D printing (claimed). ADVANTAGE - The method improves the mechanical property and melting index of low density polyethylene.