▎ 摘　　要

NOVELTY - Graphene-modified antistatic polypropylene composite material comprises 54-76 %mass co-polypropylene, 18-28 %mass inorganic filler, 0.1-1.5 %mass graphene, 5-15 %mass toughening agent, 0.2-1.5 %mass coupling agent, 0.3-0.9 %mass antioxidant and 0.2-1 %mass nucleating agent. USE - As graphene-modified antistatic polypropylene composite material. ADVANTAGE - The composite material has improved mechanical properties, improves the antistatic effect of polypropylene, reduces the degree of dust absorption, maintains cleanliness and attractiveness of the workpiece, adopts simple preparation process and is cost-effective and easy to carry out large-scale industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the composite material involving adding polypropylene, graphene and the coupling agent into a high-speed stirrer, uniformly mixing, adding a twin-screw extruder from the main feed, carrying out melt mixing extrusion, carrying out strip water cooling cutting, obtaining the graphene master batch, where the processing temperature is 180-220 degrees C, adding copolymerized polypropylene, the toughening agent, the graphene master batch, the coupling agent, the antioxidant and the nucleating agent into a high-speed stirrer according to a ratio, uniformly mixing, adding to the twin-screw extruder from the main feed, adding the inorganic filler from the side material, carrying out melt mixing extrusion and carrying out strip water cooling cutting to obtain a polypropylene composite material with tensile strength, elongation at break and significantly improved bending modulus, where the processing temperature is 180-200 degrees C.