▎ 摘　　要

NOVELTY - Sound insulation material comprises 3-5 pts. wt. graphene oxide, 20-35 pts. wt. expanded vermiculite, 15-25 pts. wt. aqueous polyurethane emulsion, 15-20 pts. wt. polymethyl methacrylate, 3-5 pts. wt. vinyl triethoxy silane, 3-5 pts. wt. nano silica, 0.7-1 pts. wt. tris(2,4-ditert-butylphenyl) phosphite, 10-16 pts. wt. elastic rubber powder, 1-3 pts. wt. latex powder, 1-3 pts. wt. polypropylene fiber, 1-3 pts. wt. cellulose ether, 10-16 pts. wt. glass fiber, 1-2 pts. wt. water reducing agent, 55-70 pts. wt. thermoplastic phenol resin, 3-8 pts. wt. silane coupling agent, and 5-10 pts. wt. barium stearate and cobalt naphthalate, where the weight ratio of barium stearate and cobalt naphthalate is 5-8:1. USE - Used as sound insulation material. ADVANTAGE - The material: has improved sound insulation effect to enhance competitiveness of product. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing sound insulation material comprising (1) adding graphene oxide, polymethyl methacrylate, and elastic rubber powder to aqueous polyurethane emulsion, stirring to make mixture uniform, and then performing ultrasonic dispersion for 30 minutes to obtain a mixture A, (2) adding expanded vermiculite, vinyl triethoxy silane, nano silica, antioxidant, latex powder, polypropylene fiber, glass fiber, thermoplastic phenol resin, barium stearate and cobalt naphthalate, and reducing water after mixing agent and grounding into powder, and melting at 200degrees Celsius to obtain the mixture B, (3) mixing mixture A and the mixture B together, and stirring at 100degrees Celsius for 5 minutes, and mixing mixture A and the mixture B thoroughly to obtain the mixture C, and (4) pouring mixture C into a mold, cooling, and solidifying to obtain a sound insulation material.