▎ 摘　　要

NOVELTY - Producing oxidized graphene-modified polyurea acrylate emulsion involves taking mixture of diisocyanate, polyether amine, butyl acrylate and hydroxyethyl acrylate (HEA) as 3.4 g to 10.2 g: 14.5 g to 43.5 g: 160 g: 1.8 to 5.4 g and polyisocyanate, poly ether amines, n-butyl acrylate and hydroxyethyl acrylate. The diisocyanate is dissolved in 1/2 of n-butyl acrylate to obtain solution A, then dissolving the polyether amine in the remaining n-butyl acrylate to obtain solution B. USE - Method for producing oxidized graphene-modified polyurea acrylate emulsion (claimed) used in building coatings, fabric finishing, furniture, wood, industrial protection and leather. ADVANTAGE - The method enables to produce oxidized graphene-modified polyurea acrylate emulsion, which has uniformity, stability, has strong adhesion to the substrate, has good mechanical properties, water resistance, abrasion resistance, weather resistance. DETAILED DESCRIPTION - Producing oxidized graphene-modified polyurea acrylate emulsion involves taking mixture of diisocyanate, polyether amine, butyl acrylate and hydroxyethyl acrylate (HEA) as 3.4 g to 10.2 g: 14.5 g to 43.5 g: 160 g: 1.8 to 5.4 g and polyisocyanate, poly ether amines, n-butyl acrylate and hydroxyethyl acrylate. The diisocyanate is dissolved in 1/2 of n-butyl acrylate to obtain solution A, then dissolving the polyether amine in the remaining n-butyl acrylate to obtain solution B. The solution A and solution B are added to the flask, stirred at 40 degrees C for 0.5 h, then raised to 70-80 degrees C, reacted for 3 h, and finally reacted with hydroxyethyl acrylate for 2.5 h to obtain a double bond terminated polyurea prepolymer. Polyurethane prepolymer, methacrylate, n-butyl acrylate, acrylamide and double bond terminated polyurea prepolymer, anionic emulsifier, nonionic emulsifier, water are taken in 80g: 80g: 1.6 g-3.2g: 19.7g-59.1g: 1.6g: 3.2g: 160g and selected methyl methacrylate, n-butyl acrylate, acrylamide and double bond terminated polyurea prepolymer, emulsifier, non-ionic emulsifier, water, methyl methacrylate, n-butyl acrylate, acrylamide and double-ended polyurea prepolymer are mixed to form an oil phase. The anionic emulsifier and the nonionic emulsifier are dissolved into water to form an aqueous phase and mixing the water phase and the oil, stirring at 40 degrees C under high speed to obtain monomer pre-emulsion. The ratio of methyl methacrylate, sodium hydrogencarbonate and sodium polyacrylate is 80 g: 1.04 g: 0.32 g and sodium bicarbonate and sodium polyacrylate are selected. The persulfate is 0.5 wt.% methyl methacrylate and n-butyl acrylate, and the ratio of persulfate to water is 0.8 g: 16 to 20 g, and the persulfate is mixed with water doping persulfate aqueous solution. 1/5-1/3 monomer pre-emulsion, and sodium bicarbonate and sodium polyacrylate are added to the vessel, and the temperature is raised, stirred rapidly and mixed thoroughly and when the temperature is raised to 70 to 90 degrees C, a 1/5 to 1/3 persulfate aqueous solution is added dropwise. When the emulsion is pan blue, dropping the remaining persulfate aqueous solution and monomer pre-emulsion in batches and taking 2 to 4 hours to complete and keeping the reaction for 2 hours, cooling to room temperature, filtering out the material with standard test sieve and filtering the pH value of the emulsion is set to 7-8 with ammonia water to obtain the polyurea acrylate emulsion. The graphene oxide is selected according to the ratio of methyl methacrylate and oxidized graphene as 80g: 0.36g-1.8g. The oxidized graphene is dissolved in deionized water according to the mass ratio of 1: 100, and then ultrasonic dispersion is carried out at 60 degrees C for 0.5-2h to obtain an oxidized graphene aqueous solution. The oxidized graphene aqueous solution is added into the polyurea acrylate emulsion with stirring and is ultrasonically dispersed at 40-80 degrees C for 1 hour to obtain oxidized graphene-modified polyurea acrylate emulsion.