Adhesion of Particles to Paint and Varnish Coatings

Abstract

Adhesion of Particles to Painted Surfaces. The dust always present in the air settles on the surfaces of buildings, motor vehicles, railroad cars, and other such objects. Adherent dust harms the appearance of paint and varnish coatings, makes corrosion more severe, accelerates the aging of paints and enamels, and may act as an abrasive if removed by dry wiping. The dust in industrial emissions to the atmosphere consists of particles that can sorb oxides of sulfur and nitrogen; when such dust particles stick to a painted surface when atmospheric moisture is present, not only the coating will be damaged, but also the surface over which the paint or enamel has been applied. The removal of adherent dust from surfaces requires the expenditure of labor and material resources. In view of these circumstances, it is necessary to examine the special features of particle adhesion to painted surfaces in terms of what can be done to change the magnitude of the adhesive interaction.

See section at the end of this chapter (p. 270) for information on Soviet paint and varnish terminology. (Translator’s note.)