▎ 摘　　要

NOVELTY - Polyvinyl chloride foam pipe includes 20-25 pts. wt. banana leaf, 2.3-3 pts. wt. polylactic acid fiber, 1-1.5 pt. wt. silane coupling agent, 1.5-2 pts. wt. azodicarbonamide, 5-6 pts. wt. sodium carbonate, 0.2-0.3 pt. wt. zinc oxide, 4-6 pts. wt. polyphenylene ether, 100-110 pts. wt. polyvinyl chloride, 0.6-0.8 pt. wt. hydroxypropyl cellulose, 1-1.5 pt. wt. vinyl acetate, 1-2 pts. wt. white oil, 3-4 pts. wt. polycaprolactam, 10-12 pts. wt. lime, 0.8-1 pt. wt. titanium diboride, 2.3-2.7 pts. wt. graphene, 2-3 pts. wt. antioxidant, 0.7-1 pt. wt. carbon black, and 2-3 pts. wt. titanium slag. USE - Polyvinyl chloride foam pipe. ADVANTAGE - The product has good elasticity and flexibility, resistance to environmental cracking, high mechanical strength, excellent impact, aging and wear resistances, and long service life. DETAILED DESCRIPTION - Polyvinyl chloride foam pipe comprises 20-25 pts. wt. banana leaf, 2.3-3 pts. wt. polylactic acid fiber, 1-1.5 pt. wt. silane coupling agent, 1.5-2 pts. wt. azodicarbonamide, 5-6 pts. wt. sodium carbonate, 0.2-0.3 pt. wt. zinc oxide, 4-6 pts. wt. polyphenylene ether, 100-110 pts. wt. polyvinyl chloride, 0.6-0.8 pt. wt. hydroxypropyl cellulose, 1-1.5 pt. wt. vinyl acetate, 1-2 pts. wt. white oil, 3-4 pts. wt. polycaprolactam, 10-12 pts. wt. lime, 0.8-1 pt. wt. titanium diboride, 2.3-2.7 pts. wt. graphene, 2-3 pts. wt. antioxidant, 0.7-1 pt. wt. wear-resistant carbon black, 2-3 pts. wt. titanium slag, 5-7 pts. wt. acetyl tributyl citrate, 3-4 pts. wt. styrene-butadiene rubber, and deionized water. An INDEPENDENT CLAIM is included for preparation of polyvinyl chloride foam pipe comprising cleaning banana leaf, drying, pressing, bleaching, washing, drying to obtain banana fiber, mixing with polylactic acid fiber, silane coupling agent and wear-resistant carbon black into high-speed mixer to obtain uniform dispersion, feeding resulting material into twin-screw extruder, and drying; mixing titanium slag and titanium diboride, adding 3-5 times deionized water, adding graphene, heating, crushing into 400-500 mesh particles, adding hydroxyethyl cellulose and polyethylene glycol, adding 23-26 times deionized water, dissolving, and adding first resulting material; dispersing uniformly, and adding styrene-butadiene rubber; and adding remaining raw materials, feeding into high-speed mixer, plasticizing at 130-140 degrees C, molding at 185-190 degrees C for 2.5-3 minutes under 15-18 MPa, and cooling naturally.