▎ 摘　　要

NOVELTY - A scratch-resistant polyoxymethylene carbon fiber reinforced composite material contains 90-100 pts. wt. polyoxymethylene, 10-30 pts. wt. carbon fiber, 0.5 0.7 pts. wt. calcium stearate, 0.1-0.3 pts. wt. antioxidant, 0.2-0.4 pts. wt. pentaerythritol, 4-6 pts. wt. wollastonite, 0.3-0.6 pts. wt. KH-550 (RTM: Silane coupling agent), 2-4 pts. wt. graphene oxide, and 2-3 pts. wt. nano-silica. USE - Scratch-resistant polyoxymethylene carbon fiber reinforced composite material (claimed). ADVANTAGE - The polyoxymethylene carbon fiber reinforced composite material has excellent scratch resistance, lubrication properties, synergistic effect and decorative effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of scratch-resistant polyoxymethylene carbon fiber reinforced composite material, which involves adding paraformaldehyde, calcium stearate and antioxidant to a high speed mixer, uniformly mixing, stirring the mixture at 70-80 degrees C and then drying for 2-3 hours under vacuum, adding nano-silica to the mixture and then sintering at 400-450 degrees C for 2-3 hours under vacuum, adding graphene oxide and anhydrous ethanol to the mixture and then stirring for 5-10 minutes, adding wollastonite to the mixture and then continuously dispersing for 20-30 minutes, filtering the mixture and then washing using distilled water, drying the mixture and then precipitating, adding KH-550 (RTM: Silane coupling agent), nano-silica and pentaerythritol to the mixture and then mixing, grinding the mixture, adding chopped carbon fiber to the mixture and then preheating, adding paraformaldehyde to the mixture and then placing in a twin screw extruder, extruding the mixture and then cooling, granulating the mixture and then vacuum drying at 70-80 degrees C for 2-3 hours, heating the mixture at 150-180 degrees C and then rapidly cooling, placing the mixture in an injection molding machine and then molding at 180-190 degrees C under a pressure of 50-60 MPa and a speed of 55-60 mm/seconds, holding the mixture for 15-20 seconds, and molding at 70-80 degrees C.