Preparation method of water-based organosilicon acrylate composite emulsion and stain-resistant coating

The invention relates to a preparation method of a water-based organosilicone acrylate composite emulsion and a stain-resistant coating, and belongs to the field of high polymer material synthesis and coatings. The preparation method comprises the following steps: dispersing an organic silicon monomer, an acrylate monomer and a curing agent in water under the action of an emulsifier through shearing force of high-speed stirring, reducing the size of monomer liquid drops in a water phase by using ultrasonic waves to form a miniemulsion, and uniformly mixing the monomer and the curing agent in the small-size liquid drops, the defect that in traditional emulsion polymerization, hydrophobic monomers are not easy to merge into micelles and are caught by free radicals to initiate polymerization to form long chains is overcome; adding a water-soluble initiator, and carrying out heating polymerization to obtain a stable water-based high-content (accounting for 70wt% of the total mass of the monomer) organosilicone co