▎ 摘　　要

NOVELTY - Chlorinated polyvinyl chloride (CPVC) power tube comprises 90-135 pts. wt. chlorinated polyethylene, 20-30 pts. wt. graphene, 20-30 pts. wt. calcium carbonate, 10-15 pts. wt. antioxidant, 5-9 pts. wt. composite lubricant, 0.5-2 pts. wt. carbon black, 1.5-3 pts. wt. toughening agent, 5-15 pts. wt. copper oxide, 5-8 pts. wt. polystyrene, 3-6 pts. wt. flame retardant complexing agent, and 2-5 pts. wt. liquid smoothing agent. USE - Chlorinated polyvinyl chloride power tube used as cable protection tube. ADVANTAGE - The chlorinated polyvinyl chloride power tube has improved corrosion resistance, impact resistance, and use effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of preparing chlorinated polyvinyl chloride (CPVC) power tube, which involves: (1) obtaining the corresponding CPVC power tube initial model, primarily grinding the initial model by the grinding device, defining the inner diameter and the outer diameter of the power tube, and finishing primary polishing work of the initial model; (2) mixing the chlorinated polyethylene, graphene, calcium carbonate, antioxidant by corresponding mixing device, after mixing, standing for a period of time, and controlling temperature in a certain interval; (3) sequentially coating composite lubricant, toughening agent, flame retardant complexing agent, liquid smoothing agent and carbon black on inner and outer surface of the CPVC power tube, where interval coating time is controlled in certain interval, and coating thickness of each group of different composite agent are different; and (4) putting the corresponding rest raw material into the corresponding mixing agent, using the external stirring device to stir the raw material in the mixing agent, controlling stirring time in a certain interval, at the same time, controlling the stirring temperature, after stirring, standing for a period of time, and standing to obtain CPVC power tube.