▎ 摘　　要

NOVELTY - A polyethylene water supply pipe comprises inner antibacterial layer and outer polyethylene layer. The inner antibacterial layer comprises 40-80 pts. wt. polyethylene resin, 20-40 pts. wt. nano-silica, 12-20 pts. wt. nano-titanium dioxide, 5-15 pts. wt. talc powder, 8-15 pts. wt. modified graphene, 1-3 pts. wt. stearic acid, 1-3 pts. wt. zinc stearate, 3-8 pts. wt. polyethylene wax, 3-8 pts. wt. polyurethane resin, 5-12 pts. wt. calcium carbonate, 5-12 pts. wt. modified polyfluororubber, and 15-30 pts. wt. modified polyacrylic acid. USE - Polyethylene water supply pipe. ADVANTAGE - The pipe has good mechanical property, improved high pressure resistance, impact resistance and wear resistance by more than 10% compared with the market's silica pipeline, reduced water permeability by more than 5%, and low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of polyethylene water supply pipe comprising adding raw materials to high-speed mixer, stirring for 8-15 minutes, adding to twin-screw extruding machine, extrusion melting at 140-170 degrees C, 180-220 degrees C and 250 degrees C respectively at rotating speed of 430-500 revolutions/minute, traction speed of 5-12 meters/minute and traction pressure of 0.3-0.5 MPa, and granulating.