▎ 摘　　要

NOVELTY - Preparing graphene modified acrylate waterproof and environmental protection coating involves adding 100-200 pts. wt. anhydrous ethyl acetate into the reflux reactor, and then dissolving 80-120 pts. wt. isophorone diisocyanate in anhydrous ethyl acetate, then adding 80-120 pts. wt. β-hydroxypropyl acrylate into the reflux reactor, mixing uniformly, raising the internal temperature of the reflux reactor to 50-80℃, and performing a constant temperature reflux reaction for 1-2 hours to obtain solution (A). The 100-200 pts. wt. anhydrous ethyl acetate is added into the reaction kettle, then added 1-3 pts. wt. graphene oxide into the reaction kettle, and ultrasonically dispersed the graphene oxide into anhydrous ethyl acetate, and obtained graphene oxide dispersion liquid. The temperature is controlled at 20-40℃, slowly added solution (A) to the graphene oxide dispersion, and obtained solution (B). USE - Method for preparing graphene modified acrylate waterproof and environmental protection coating. ADVANTAGE - The method realizes the chemical modification of graphene to beta-hydroxypropyl acrylate by using isophorone diisocyanate as an intermediate, and further realizes the chemical modification of acrylate waterproof coating, and specific surface area can block the entry of corrosive media, and further improves the anti-corrosion ability of acrylic waterproof and environmentally friendly coatings. DETAILED DESCRIPTION - Preparing graphene modified acrylate waterproof and environmental protection coating involves adding 100-200 pts. wt. anhydrous ethyl acetate into the reflux reactor, and then dissolving 80-120 pts. wt. isophorone diisocyanate in anhydrous ethyl acetate, then adding 80-120 pts. wt. β-hydroxypropyl acrylate into the reflux reactor, mixing uniformly, raising the internal temperature of the reflux reactor to 50-80℃, and performing a constant temperature reflux reaction for 1-2 hours to obtain solution (A). The 100-200 pts. wt. anhydrous ethyl acetate is added into the reaction kettle, then added 1-3 pts. wt. graphene oxide into the reaction kettle, and ultrasonically dispersed the graphene oxide into anhydrous ethyl acetate, and obtained graphene oxide dispersion liquid. The temperature is controlled at 20-40℃, slowly added solution (A) to the graphene oxide dispersion, and obtained solution (B). The solution (B) is added into the reflux reaction kettle, raised the temperature to 50-80℃, and conducted a constant-temperature reflux reaction for 1-3 hours to obtain a graphene oxide-modified acrylate monomer solution. The 100-200 pts. wt. deionized water added into the reactor, added 30-60 pts. wt. methyl methacrylate, 0.1-0.3 pts. wt. sodium bicarbonate, 1-5 pts. wt. compound emulsifier, 0.1-0.5 pts. wt. initiator, 1-3 pts. wt. cross-linking agent, and then start to stirred for 5-20 minutes through the mixer. The speed of the mixer is controlled to 200-300 revolutions/minute, mixed 10-30 pts. wt. methyl methacrylate and 1-20 pts. wt. graphene oxide modified acrylate monomer solution, and then slowly added to the reaction kettle. The temperature in the reactor is raised to 70-90℃. The solution of 10-30 pts. wt. methyl methacrylate and 1-5 pts. wt. graphene oxide modified acrylate monomer has been mixed, the solution is kept for 10-30 minutes, and then cooled to room temperature to prepare a nuclear pre-emulsification liquid. The 100-200 pts. wt. deionized water is added into the reaction kettle, added 30-50 pts. wt. β-hydroxypropyl acrylate, 1-3 pts. wt. compound emulsifier, 10-20 pts. wt. butyl acrylate into the deionized water, Stirring with a mixer for 20-40 minutes to prepare shell pre-emulsion. The nuclear pre-emulsion to be controlled in a stirred state, the mixer speed is 150-200 revolutions/minute, and the temperature is raised to 70-80℃, and added the shell pre-emulsion to the core pre-emulsion, and added 0.1-0.3 pts. wt. initiator at the same time. The core pre-emulsion is added, kept warm for 1-3 hours, then raised the temperature to 70-90℃, and kept warm for 10-20 minutes, and finally cooled to room temperature to obtain solution (D). The 0.1-0.2 pts. wt. defoamer is added to solution (D), then added ammonia water to adjust the pH of solution (D) to 7-8, filtered and removed impurities to obtain graphene-modified acrylate waterproof coating.