The invention relates to an exterior wall
coating which comprises the following raw materials in parts by weight: 80-90 parts of a
water based acrylic
emulsion, 15-20 parts of a
styrene-acrylic
emulsion, 30-60 parts of nano
bentonite, 3-4 parts of
sodium carboxymethylcellulose, 2-3 parts of
butyl methacrylate, 1-2 parts of dimethyl dimercaptoacetic
tin isooctylate, 0.6-1 part of phenethyl
phenol polyoxyethylene ether, 0.5-1 part of
glass fiber, 0.8-1 part of 1, 2-di(triethoxy
silicon base) ethane, 0.1-0.2 part of
tributyl phosphate, 3-5 parts of a coalescing agent and 10-20 parts of deionized water. The produced
coating disclosed by the invention is less in
raw material loss, less in gel generation, simple in process, hard in film, good in luster, strong in
impact resistance, difficult to crack, flexible in texture, strong in decoration, high in
weather resistance and washing resistance, strong in
adhesive force, long in service life, and free from special smell,
heavy metals such as mercury and lead, and
formaldehyde volatiles, so that the
coating is in accordance with technical demand of environmental-friendly coatings. The coalescing agent is added, so that the coating is very high in stability, and efficient in adhesiveness and film-forming property. The compactness of the coating film is increased, and the film-forming quality is improved, so that a film has the advantages of strong
adhesive force, no holes and rifts, uniform compactness and the like.