The invention discloses exterior wall
emulsion paint and a preparation method thereof. The exterior wall
emulsion paint is composed of the following raw materials by weight: 100-150 parts of
styrene-acrylic
emulsion, 120-160 parts of hydrated
magnesium silicate superfine
powder, 180-240 parts of sienna stone
powder, 40-60 parts of
titanium dioxide, 80-120 parts of composite nano
powder, 3-6 parts of ethanediol, 1-3 parts of
glycolaldehyde, 0.5-1.5 parts of dodecyl dimethyl benzyl
ammonium chloride, 2-4 parts of
sodium hydroxypropyl oxidized
starch succinate, 3-5 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 0.5-1.5 parts of a multi-functional additive AMP-95, 4-6 parts of a dispersant HT-5000, 1-2 parts of a moistening agent SF-2, 2-3 parts of a
thickening agent MS-1, 1-2 parts of a
polyurethane rheological agent HT-860, 0.5-1 part of a defoaming agent HT-6520 and 250-350 parts of water. The exterior wall emulsion paint has excellent
weather resistance,
water resistance,
stain resistance and adhesion resistance, does not crack, peel off, shell or
change color by being exposed to air for a long time, is durable in use, is safe and non-toxic, has no
pollution, and is suitable for decoration of building exterior walls.