▎ 摘　　要

NOVELTY - A polyethylene-graphene composite biofiller comprises 594-599.7 pts. wt. polyethylene and 0.3-6 pts. wt. graphene. USE - Polyethylene-graphene composite biofiller. ADVANTAGE - The biofiller has improved surface roughness, specific surface area and surface hydrophilicity, and increased porosity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the polyethylene-graphene composite biofiller comprising preparing graphene oxide into 6 mg/mL graphene oxide aqueous solution through ultrasonic dispersion, atomizing into graphene oxide droplet microsphere, collecting receiving liquid in cooling bath, filtering to obtain graphene oxide aerogel microspheres, freeze-drying, and subjecting to thermal reduction method to obtain graphene aerogel microspheres; dissolving polyethylene in xylene at 100-150 degrees C to obtain polyethylene xylene solution, adding graphene aerogel microspheres at 0.1-200 mbar, ultrasonically dispersing, and oven heating to 120 degrees C to obtain polyethylene-graphene composite material; and freeze-crushing, extruding, and cutting.