Environment-friendly water-based high-performance crack decorative paint and preparation method thereof

The invention relates to an environment-friendly water-based high-performance crack decorative paint, which belongs to the field of water-based crack decorative paints, and comprises a primer and a finish paint, comprising 40 to 55 parts of a water-based self-crosslinking elastic acrylic polymer, 25 to 35 parts of water, 0.15 to 0.4 part of a defoaming agent, 0.3 to 0.8 part of a pH regulator, 1.5 to 2.0 parts of an anti-flash rust auxiliary agent, 0.8 to 1.3 parts of a thickening agent, 0.8 to 1.5 parts of an adhesion promoter, 5 to 15 parts of color paste and 0.9 to 2.5 parts of an anti-freezing agent. The finish paint is prepared from the following components in parts by weight: 55 to 65 parts of water-based self-crosslinking acrylate copolymer, 15 to 20 parts of water, 0.05 to 0.15 part of defoaming agent, 0.5 to 0.9 part of pH regulator, 0.5 to 1.5 parts of anti-flash rust aid, 0.5 to 1.0 part of thickening agent, 1.3 to 2.2 parts of scratch-resistant aid, 8 to 15 parts of color paste, 0.5 to 0.8 part of