▎ 摘　　要

NOVELTY - Preparing antistatic and wear-resistant modified composite material comprises e.g. (1) preparing modified polyamide 66 composite material pre-product is the polyamide 66 pure material that the mass ratio is 81-87%, carrying out melt mixing of 5-15 wt.% antistatic agent, 3-5 wt.% high temperature resistant silicone oil, 0.5-3.5 wt.% inorganic filler, 0.2-2 wt.% nano copper powder, blending, and granulating blend through an extruder to obtain modified polyamide 66 composite material pre-product particles, (2) soaking chopped glass fibers in an alcohol-water mixed solvent with a volume ratio of 3-5:1, carrying out ultrasonic cleaning for 0.5-1 hour, washing with deionized water, and carrying out vacuum drying to obtain glass fiber pure material, mixing siloxane coupling agent and graphene in an alcohol-water mixed solvent with a volume ratio of 1:1 according to a mass ratio of 0.2-0.5:1. USE - The method is useful for preparing antistatic and wear-resistant modified composite material, which is useful for manufacturing machinery, automobile, parts of chemical and electric device e.g. gear, roller, pulley, roller shaft, impeller in pump body, fan blade, high pressure sealing ring, valve seat, gasket, bush, various handles, supporting frame and electric wire inner layer. ADVANTAGE - The material has excellent impact resistance and wear resistance, high strength, good toughness, and excellent anti-static performance. The filler improves the interface connection between the substrate and the reinforcing body, so that the composite material has good mechanical stability. The method improves toughness and aging resistance of the polyamide composite material. DETAILED DESCRIPTION - Preparing antistatic and wear-resistant modified composite material comprises (1) preparing modified polyamide 66 composite material pre-product is the polyamide 66 pure material that the mass ratio is 81-87%, carrying out melt mixing of 5-15 wt.% antistatic agent, 3-5 wt.% high temperature resistant silicone oil, 0.5-3.5 wt.% inorganic filler, 0.2-2 wt.% nano copper powder, blending, and granulating blend through an extruder to obtain modified polyamide 66 composite material pre-product particles, (2) soaking chopped glass fibers in an alcohol-water mixed solvent with a volume ratio of 3-5:1, carrying out ultrasonic cleaning for 0.5-1 hour, washing with deionized water, and carrying out vacuum drying to obtain glass fiber pure material, mixing siloxane coupling agent and graphene in an alcohol-water mixed solvent with a volume ratio of 1:1 according to a mass ratio of 0.2-0.5:1 to obtain a mixed dispersion liquid, immersing pure glass fiber material in the dispersion liquid, and using ultrasonic machine to dispersing at 45-60℃ immersing for 0.5-2 hours, and taking out and drying glass fiber at 100-105℃ for 10-15 hours to obtain graphene-coated modified glass fiber, (3) using auxiliary material additive includes a high temperature resistant composite material, and the high temperature resistant composite material includes 35-45 wt.% polytetrafluoroethylene, 5-12 wt.% molybdenum disulfide, 5-12 wt.% graphite, and dimethyl silicone oil (balance), using high mixer for mixing molybdenum disulfide, graphite and dimethyl silicone oil, and using screw extruder for extruding and granulating mixed material to obtain high temperature resistant composite material, where the particle size of the polytetrafluoroethylene is 3-6 µm, the particle size of the molybdenum disulfide is 5-10 µm, and the particle size of the graphite is 5-10 µm, and (4) preparing antistatic and wear-resistant modified composite materials is based on the modified polyamide 66 composite material pre-product particles as the matrix resin, mixing modified glass fiber is reinforcing material with other auxiliary materials by side feeding method, after twin-screw extrusion, granulating, drying and packing composite material product, where raw material includes 50-83.5 pts. wt. modified polyamide 66 composite material pre-product particle, 15-35 pts. wt. modified glass fiber, 0.2-5 pts. wt. carbon fiber, 0.2-0.3 pts. wt. high temperature resistant composite material, 0.2-0.3 pts. wt. anti-yellowing agent, 0.5-0.8 pts. wt. high temperature lubricant, 0.2-0.5 pts. wt. antioxidant, and 0.2-0.5 pts. wt. dispersant. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart illustrating the method for preparing antistatic wear-resistant modified composite material (Drawing includes non-English language text).