▎ 摘　　要

NOVELTY - Preparing aqueous sound insulation and noise reduction coating involves dissolving the pure acrylic emulsion in deionized water, weighing 20-25 wt.% of the quality of the pure acrylic emulsion and placing the silicon dioxide aerogel in deionized water. A little dispersant and defoamer added to the mixed solution, and dispersed under the ultrasonic disperser for 2-4 hours. The nitrile rubber powder and graphene are added to the mixed solution. The graphene and nitrile rubber powder is stirred uniformly with mixed solution, so that they can be completely and uniformly dispersed in mixed solution. The wetting agent, leveling agent and preservative added to mixed solution in sequence, and performed ultrasonic vibration in ultrasonic oscillator for 35-45 minutes to make additives mixed uniformly. The ammonia solution and the film-forming aid added to the mixed solution, and stirred and mixed with a high-speed mixer to obtain a paste-like sound-insulating and noise-reducing coating. USE - Method for preparing aqueous sound insulation and noise reduction coating. ADVANTAGE - The method is performed under redox reaction and ultrasonic dispersion, where graphene oxide cups can be better reduced to graphene and can be dispersed to the nanometer level, and a small amount of unreduced hydroxyl and carboxyl groups on the edge of the graphene sheet, and the nanoscale dispersed graphene has more active physical and chemical properties than graphite, and after being mixed with the main film-forming agent, form a dense porous multi-layer sound insulation cavity, which has a better sound insulation and noise reduction effect than traditional sound insulation coatings.