▎ 摘　　要

NOVELTY - Aqueous paint comprises 70-85 pts. wt. polyurethane emulsion, 5-8 pts. wt. water, 5- 10 pts. wt. composite auxiliary agent and 5-20 pts. wt. additive. USE - The aqueous paint is useful for painting inner wall surface. ADVANTAGE - The aqueous paint: has excellent mechanical property and waterproof property. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing aqueous paint comprising (1) mixing the styrene-maleic anhydride solution with graphene oxide suspension liquid, adjusting pH, adding paraffin, stirring and emulsifying to obtain mixed solution, (2) mixing the mixed solution of step (1) with calcium chloride solution, adding sodium carbonate solution, stirring and reacting, filtering, washing, drying to obtain the additive blank, (3) adding the additive blank obtained in step (2) into the gelatinized starch solution, stirring and mixing to obtain the additive blank mixed dispersion, adding the additive blank mixed dispersion into ammonium sulfate solution to filter, drying to obtain the additive, and (4) providing 70-85 pts. wt. polyurethane emulsion, 5-8 pts. wt. water, 5-10 pts. wt. composite auxiliary agent and 5-20 pts. wt. additive, the polyurethane emulsion is mixed with water, adding composite auxiliary agent and additive, stirring and mixing to obtain a aqueous paint coated on the wall of the inner wall.