▎ 摘　　要

NOVELTY - Expansion-type aqueous polyurethane elastomer comprises 30-50 pts. wt. aqueous polyurethane resin, 15-30 pts. wt. flame retardant, 10-20 pts. wt. elastic rubber powder, 5-10 pts. wt. wear-resistant agent, 3-8 pts. wt. auxiliary agent, and 5-10 pts. wt. zinc oxide powder. USE - Used as expansion type aqueous polyurethane elastomer. ADVANTAGE - The expansion type aqueous polyurethane elastomer has excellent flame retardant and high temperature aging resistance, and improved wear resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the expansion type aqueous polyurethane elastomer comprising (a) preparing auxiliary agent by adding leveling agent, defoamer and dispersant together, stirring uniformly, (b) mixing the ammonium polyphosphate, pentaerythritol, melamine, graphene oxide together, using ultrasonic vibration device to mix, dispersing uniformly to form emulsion, fully stirring and mixing by the stirring machine, sieving the material after mixing, sieving and discharging to obtain the flame retardant, (c) adding auxiliary agent in the aqueous polyurethane resin, wear-resistant agent and zinc oxide powder, dispersing uniformly, (d) adding flame retardant, stirring uniformly, (e) adding elastic rubber powder, stirring uniformly and (f) filtering and packaging.