Assessment of the Durability of Coatings Based on Sol Silicate Paint

Information is given on the operational stability of coatings based on sol-silicate paint. It is shown that coatings are characterized by higher resistance to cyclic freezing-thawing. The values of the free surface energy of the coating are given. It was found that coatings based on sol silicate paint have a higher surface free energy with a predominance of the polar component. Determined that the decrease in the FSE of coatings during freezing and thawing occurs mainly due to the dispersion component. The interfacial interaction between the paint and the substrate is considered. It was revealed that the sol-silicate paint is characterized by high adhesion work, wetting work, which determines the high adhesion strength of the paint to the substrate during freezing. The values of adhesion strength of sol silicate paint with the substrate are given. The analysis of experimental data indicates that the decrease in the FSE occurs mainly due to a decrease in the dispersion component. Thus, after 7 days of wetting, the decrease in the FSE coating based on sol silicate paint was 5.084 mN/m, including the dispersion component - 5.35 mN/m. The decrease after 7 days of wetting the FSE coating based on silicate paint is 9.01 mN/m.