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What role does Barium Sulphate play in coatings?

Colorless orthorhombic crystal or white amorphous powder. Easy to cake when boring. The relative density is 4.50 (15 ° C) and the melting point is 1580 ° C. Almost insoluble in water,

Ethanol and acid. Dissolved in hot concentrated sulfuric acid. Polycrystalline transformation occurs around 1150 ° C. It started to decompose significantly at about 1400 ° C. Chemically stable.

Carbon can be reduced to barium sulfide at 600 ° C. The water-soluble part of Barium Sulphate is fully ionized and is a strong electrolyte. Barium Sulphate is insoluble in dilute nitric acid.

Mineral Name: Barite

Chemical formula: BaSO4

Molecular weight: 233.39

Properties: Barium Sulphate is white, loose, fine powder, odorless, tasteless, insoluble in water, organic solvents, acids or sodium hydroxide solution.

Barium Sulphate is used as an extender pigment in coating guessing. It plays an important role in improving the thickness, abrasion resistance, water resistance, heat resistance, surface hardness, and impact resistance. In addition, Barium Sulphate has a high reflectivity in the 300-400 micron wavelength range, which can protect the paint film from light aging. It is a useful and cheap white auroral stabilizer.

Because of its low oil absorption and high filling capacity, it can reduce the cost of coatings and can be used for water-based coatings, primers, center coatings, oily coatings, etc. Use it to replace 10% -25% of titanium dioxide in water-based coatings, and as a result, the probability of whiteness improvement has not decreased.


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