Barium sulfate, as an inorganic pigment, is widely used in the coating industry. It reflects well at 300-400 microns. It prevents light aging from damaging the paint film. It is an efficient white matte stabilizer. Its unique needle-like crystal structure gives it excellent matte properties. It can also enhance the coating’s leveling.
Also, barium sulfate’s low oil absorption and high filling content make it a cheap coating. Barium sulfate is the main body pigment, at up to 70%. Precipitated barium sulfate is vital in coatings.
Precipitated barium sulfate can significantly improve the performance of coatings:
1. Increase density: Precipitated barium sulfate has a high specific gravity. It can raise the coating’s density. This makes the coating spread more evenly on the coated object’s surface. It improves the coating’s smoothness and efficiency.
2. Improve hiding power: Precipitated barium sulfate has high whiteness and hiding power. It can cover the color and defects of the underlying material. This will enhance the coating’s ability to conceal the layer below.
3. Enhance weather resistance: Precipitated barium sulfate particles are very stable. They resist light, oxygen, and moisture. This protects coatings from the elements and extends their life.
4. Precipitated barium sulfate particles can fill gaps in the coating. They can improve its hardness and wear resistance. This makes the coating more durable and scratch-resistant.
5. Precipitated barium sulfate particles have a large surface area and strong adsorption. They can adjust the rheological agent in the coating. This optimizes the coating’s fluidity and viscosity, making construction easier and more stable.
The particle size of precipitated barium sulfate has many effects on coating performance:
Hiding power: Smaller, precipitated barium sulfate has a larger surface area. It scatters light better, so it has stronger hiding power. In contrast, larger particles of precipitated barium sulfate scatter light less and hide worse. To achieve the same hiding effect, we must increase the amount added. But, this may affect other coating properties.
Gloss: A smaller particle size of precipitated barium sulfate leads to a more uniform dispersion in the coating. This makes the coating surface smoother and improves its gloss. Larger particles in precipitated barium sulfate tend to agglomerate. This causes an uneven coating surface and reduces gloss.
Stability: Precipitated barium sulfate with a small size and good dispersion can better integrate with the coating system. It will reduce precipitation and stratification during storage and maintain the coating’s stability.
Leveling: Small, well-dispersed, precipitated barium sulfate can improve the coating’s leveling. It will make the surface smoother. In high-leveling coatings, using small, precipitated barium sulfate can improve the finish.
So, when choosing precipitated barium sulfate, select products with the right particle size. It should match the coating formula and your specific needs.
Barium sulfate jet mill grinding case
加工材料: 重晶石
出力: 1時間あたり500kg
Raw素材 粒子サイズ: 325メッシュ
F最終製品の粒子サイズD97: 2.5μm
I産業: 非金属鉱物
プロジェクト住所貴州省