Effects of auxiliary agents on stability and film-forming property of inorganic interior wall paint
[Introduction]Inorganic interior wall coatings with silicate solution as the main film-forming agent have the technical defects of poor storage stability and film-forming performance.[Method]An inorganic interior wall paint was prepared by blending potassium silicate solution and styrene-acrylic emulsion as binders.The effects of different dispersants,thickeners,stabilizers,and defoamers on the viscosity and anti-sagging property of the paint and the appearance of its coating were studied.[Result]The optimal dosages of different auxiliary agents by mass fractions for preparing the inorganic interior wall paint were determined as follows:sodium hexametaphosphate 0.4%as a dispersant,hydroxypropyl methyl cellulose 0.1%,xanthan gum 0.1%,polyurethane thickener 0.1%,quaternary ammonium salt stabilizer 0.5%-1.0%,and mineral oil defoamer 0.5%.[Conclusion]The paint has good storage stability and film-forming performance,and its properties can meet the requirements of related national standards.
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