Waterproof and anti-seepage exterior wall coating and preparation method thereof

The invention relates to a waterproof and anti-seepage exterior wall coating, which is prepared from 120 to 180 parts of silicon dioxide, 200 to 350 parts of water, 500 to 700 parts of emulsion, 220 to 300 parts of ground calcium carbonate, 150 to 200 parts of talcum powder, 80 to 135 parts of silica fume, 115 to 165 parts of iron oxide pigment, 35 to 80 parts of benzoin, 50 to 85 parts of dispersing agent, 45 to 90 parts of thickening agent and 50 to 80 parts of flatting agent. The emulsion is prepared from 10 to 20 percent of methyl methacrylate, 5 to 10 percent of 2-ethylhexyl acrylate, 15 to 30 percent of butyl acrylate, 10 to 20 percent of styrene, 5 to 10 percent of ethylene unsaturated carboxylic acid, 3 to 8 percent of active monomer and 40 to 60 percent of deionized water. Acrylate emulsion can be prepared by adding methyl methacrylate, 2-ethylhexyl acrylate, butyl acrylate, styrene, ethylene unsaturated carboxylic acid and an active monomer into deionized water, so that the weather resistance and wa