Composite high-polymer waterproof paint and preparation method thereof

The invention provides a composite high-polymer waterproof paint and a preparation method thereof. The composite high-polymer waterproof paint comprises the following components in parts by weight: 35-48 parts of acrylic ester modified composite emulsion, 1-5 parts of organosilicon waterproofing agent, 1-5 parts of nanometer powder, 15-35 parts of pigment and filler, 0.2-0.5 part of biocide, 0.1-0.5 part of anti-aging agent, 0.2-1 part of dispersing agent, 0.1-0.15 part of wetting agent, 1-1.5 parts of film-forming additive, 0.1-0.3 part of leveling agent, 0.2-0.4 part of defoaming agent, 0.4-1.5 parts of thickening agent, 0.1-0.5 part of PH stabilizing agent and 15-30 parts of water, wherein the acrylic ester modified composite emulsion is formed by compounding an elastic waterproof acrylic ester emulsion, a high-elastic waterproof emulsion specific for cement and a polyurethane modified waterproof acrylic ester emulsion. By using the composite high-polymer waterproof paint, the limit of a single high-polymer emulsion is overcome, the comprehensive performances such as adhesion, elasticity, water resistance and the like of a coated film are improved, and the coated film has favorable hydrophobicity after being dried.