Why does precipitated barium sulfate affect the gloss of powder coatings

Powder coatings, some of which have precipitated barium sulfate, for this kind of barium sulfate I believe many people should have known, its whiteness, performance, fineness and other aspects are more advantageous, and powder coatings in the production, gloss is quite important, precipitated barium sulfate on its powder coating gloss also has an impact, why so?

With the advantages of high gloss, high whiteness, high content and high fineness, precipitated barium sulfate plays an important role in the powder coating industry. The glossiness of the coating refers to the reflection ability of the coating surface to the light projected. The stronger the reflection ability, the greater the glossiness.

If the particle size of the precipitated barium sulfate powder itself is very fine, and can be evenly dispersed into the coating, then the coating is smooth, dense as a mirror, and the gloss will be very obvious; On the contrary, if the particle size of barium sulfate is too coarse and the uniformity is poor, the coating surface is rough, the gloss will be reduced and the tone will be dark.
The gloss of powder coating directly determines its quality. Therefore, gloss is particularly important in powder coatings. Barium sulfate in powder coatings has good dispersibility, fineness and no impurities. Its surface treatment has three treatment methods: anodic oxidation, electrophoretic coating and powder spraying. If we add barium sulfate in powder coatings, the effect is very significant. The coating has adhesion, corrosion resistance and weather resistance. Barium sulfate in powder coatings can achieve a gloss of 100, But the rest can only be around 98.

Particle size and dispersion are related factors that affect the gloss of powder coatings. For powder coatings, the gloss is closely related to the quality. After understanding the influencing factors, we can start from these factors to find solutions to the problems related to the gloss of powder coatings and improve their gloss.