There are natural and synthetic barium sulfate pigments used as coatings, the natural product is called barite powder and the synthetic product is called precipitated barium sulfate.
In powder coatings, precipitated barium sulfate can enhance the leveling and light retention of powder coatings, and has good compatibility with all colors. It can make the powder coating reach the ideal film thickness in the spraying process, and the powder rate is high.
Barite powder filler is mainly used for industrial primers and automotive intermediate coatings that require high film strength, high filling force and high chemical inertia, as well as for the finish that requires a higher gloss. In latex paint, due to the high refractive index of barite (1.637), fine barite powder can have the function of semi-transparent white pigment, can replace part of titanium dioxide in the paint.
-- "Coating Industry" by Wechat Public ID 2021-07-19 16:53 published in Jiangsu
