Fillers in powder coatings can not only reduce the cost, but also play an important role in improving the performance of coatings. Such as improving the wear resistance and scratch of the coating film, reducing the flow of the melt flow at ordinary times, improve the corrosion resistance, improve the moisture resistance, etc..
Density, dispersion, particle size distribution, purity and other factors should be considered when selecting filler for powder coating. generally speaking, the higher the density, the lower the coverage of powder coating; The dispersion of large particles is better than that of small particles. fillers are chemically inert to avoid reactions with certain components of the powder formulation, such as pigments; the color of filler should be as white as possible. powder coating materials are mainly barium sulfate, calcium carbonate, talcum powder, mica powder, kaolin, silica, wollastonite and so on.
-- "Coating Industry" by Wechat Public ID 2021-07-19 16:53 published in Jiangsu
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