Application characteristics of fumed silica in coatings - Used as a dispersant
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In the powder coating system, due to the small particle size and high surface energy of fumed silica, it can be adsorbed on the surface of the coating powder and form a surface layer on the surface of the powder to improve the dispersibility and sprayability of the coating. Helps dispersant use.
To increase the adhesion of the dispersant to the powder particles, hydrophobic silica is more recommended because they maximize the adsorption of powder particles in the small micron size range. At the same time, because it is a hydrophobic product, it can reduce the adsorption of moisture when covering the powder particles, thus preventing the coating from agglomerating.
