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Silica used in painting and coating
Jun 01, 2018

            Silicon Dioxide for Painting and Coating as Matting Agent

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White carbon black has thixotropic properties, and a small amount of silica added to the coating can eliminate the droplet deposition. In unsaturated polyester coatings, as long as 0.5 ~ 2% concentration of white carbon black is added, the coating will not produce droplets and wrinkles even coated on the vertical surface up to every time 500g/m2 . Adding silica to pigments can not only prevent pigments from precipitating, but also improve the adsorption of pigments and dyes and improve their dispersivity. When used as an emulsion coating filler, the thermal stability can be improved. In order to meet the requirements of white paint and ink matting agent, we have developed and produced special matting agents abroad. When nitro varnish and similar coatings contain precipitated white carbon black light elimination agent, it can improve the non precipitation performance of the paint, and can make the paint easy to disperse, only a small amount of thickening effect, good suspension, excellent light extinction, high transparency and good wear resistance. The printing ink added 0.5% white carbon black, the printing effect is good, can eliminate the influence of the undispersed ink penetration, improve the washability of the printing material, and increase the gloss of the color.