▎ 摘　　要

NOVELTY - A composite material comprises 76.0-91.6 wt.% polyoxymethylene (POM) resin, 5.0-15.0 wt.% graphene microchip, 0.5-1.0 wt.% antioxidant, 0.5-3.0 wt.% lubricant, 1.0-3.0 wt.% dispersing agent, 0.2-2.0 wt.% formaldehyde absorbent, and 0.2-1.0 wt.% nucleating agent. USE - Composite material. ADVANTAGE - The material has low friction coefficient, small abrasion, good mechanical property, low requirement for production equipment, high efficiency, and convenient for large-scale production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of composite material comprising mixing all raw materials for 3-10 minutes, placing into twin-screw extruder, melting and extruding at vacuum degree of 0.02-0.10 with speed of 300-500 revolutions/minute, cooling, drying, and cutting into grain.