CAS 7631-86-9 Silica For Industrial Paint

SS-650L Silica Matting Agent 7631-86-9 What is the role of silica matting powder in solvent coatings? Mechanism of matting of silica matting powder: The varnish film without matting agent is in a mirror film flat state. When light reaches the surface of the mirror film, part of the incident light is absorbed, part is reflected, and part of the reflection makes the film shiny. The paint film containing silica matting agent is evenly distributed in the paint film, producing a slightly rough surface. It can be clearly seen from the scanning electron microscope photo of the coating cross section that the matting particles are evenly distributed in the coating film. When the incident light reaches the uneven surface of the paint film, diffuse reflection will occur, that is, scattering will produce low-gloss matte and matte appearance. High porosity. Good particle size distribution and suitable silica matting agent surface treatment can obtain good matting effect. Silica matting pow…