The invention discloses a water-based inorganic interior wall
coating and a preparation method thereof, the
coating comprises the following raw materials: water, silica
sol and diatomite; wherein thecontent of
silicon dioxide in the silica
sol is 25-30%, the particle size of
silicon dioxide particles is 8-10 nm, and the pH value of the silica
sol is 8-11; and the
coating further comprises a negative
ion source material, a stabilizer and a
silane coupling agent, and also comprises pigments and fillers, a
thickening agent, water-based
bentonite, a pH
regulator, a functional assistant and a resin
emulsion. The inorganic interior wall coating takes the silica sol as a main film-forming material, and is good in
environmental protection property and good in fireproof
flame retardancy, the resinemulsion is taken as an auxiliary film-forming material to improve the flexibility of the coating, and meanwhile, the inorganic interior wall coating contains the nano
titanium dioxide, the diatomite, negative
ion powder and other functional materials, so that the coating has the functions of degrading and adsorbing harmful substances, adjusting
indoor air humidity, releasing negative ions and the like; the coating is capable of inhibiting the growth of fungi and
algae due to the
alkalinity of the coating, so that the wall surface is kept clean.