Why does precipitated barium sulfate affect the gloss of powder coatings
Release time:
2021-07-08
Powder coatings, some of which have precipitated barium sulfate, for this kind of barium sulfate believe that many people should know, its whiteness, performance, fineness and other aspects are more advantages, and powder coatings in the production of time, gloss is quite important, precipitated barium sulfate on the gloss of its powder coatings also has an impact, why so?
powder coatings, some of which have precipitated barium sulfate, for this kind of barium sulfate believe that many people should know, its whiteness, performance, fineness and other aspects are more advantages, and powder coatings in production, gloss is quite important, precipitated barium sulfate on the gloss of its powder coatings also has an impact, why so?
Precipitated barium sulfate with high gloss, high whiteness, high content, high fineness advantages, in the powder coating industry has played its big role, the coating gloss refers to the coating surface of the light of the projection light Reflective ability, the stronger the reflective ability, the greater the gloss.
The main factors affecting the gloss of barium sulfate powder material after film formation are its particle size and dispersion performance. If the particle size of precipitated barium sulfate powder itself is very fine and can be evenly dispersed into the coating, the coating film will be smooth and dense like a mirror, and the gloss will be very obvious. On the contrary, barium sulfate has too coarse particle size and poor uniformity, and the coating surface is rough, which will reduce gloss and darken color.
The gloss of the powder coating directly determines its quality. Therefore, gloss is particularly important in powder coatings. Barium sulfate has good dispersibility and fineness in powder coating. Barium sulfate does not contain impurities. Its surface treatment has three treatment methods: anodic oxidation, electrophoretic coating and powder spraying. If we add barium sulfate to powder coating, the effect is very obvious, because the coating has adhesion, corrosion resistance and weather resistance. Barium sulfate in powder coating can achieve 100 gloss, but the others can only achieve about 98.
particle size and dispersion performance are related reasons that affect the gloss of powder coatings. For powder coatings, the gloss is closely related to the quality. After we understand the influencing factors, we can start from these factors to find solutions to the related problems of powder coating gloss and improve its gloss.
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