The invention provides a
nanoparticle-modified
silicon-acrylic composite exterior wall heat-insulating
coating, and its raw materials include the following components in parts by weight: 50-60 parts of
silicon-acrylic
emulsion, 2-5 parts of hollow glass microspheres, and 8-parts of diatomaceous earth 15 parts, 5-10 parts of nano-silica, 6-10 parts of hollow
ceramic microspheres, 3-6 parts of nanometer far-
infrared ceramic powder, 5-10 parts of heat-reflecting and heat-insulating
powder, 5-10 parts of
mica powder, aluminum
oxide 2-5 parts of powder, 5-10 parts of
titanium dioxide, 0.1-0.3 parts of pH
regulator, 0.5-1.0 parts of dispersant, 0.2-0.5 parts of
defoamer, 1.0-2.5 parts of coalescent, 0.5-0.5 parts of thickener 0.8 parts, 1-3 parts of
antifreeze, 0.1-0.3 parts of leveling agent, 0.1-0.3 parts of
preservative, 20-50 parts of deionized water. The invention also provides its preparation method, the
coating has good properties of nanoparticles, antibacterial properties, alkali resistance, scrub resistance,
stain resistance and
aging resistance, reflective heat insulation,
environmental protection, aesthetics, outdoor
weather resistance , Low
thermal conductivity and other advantages.