Yuan Lei's Little Knowledge | Application Characteristics of Ultrafine Barium Sulfate in Coatings
Many performance indicators of ultrafine barium sulfate (such as specific gravity, whiteness, oil absorption, refractive index, particle size, etc.) are close to titanium white, and have good dispersion and suitable particle size distribution range. In order to make titanium dioxide effectively play its covering performance, adding an appropriate amount of ultrafine barium sulfate in titanium dioxide can control the distance between titanium dioxide particles and prevent the occurrence of optical flocculation phenomenon, so as to reduce the amount of titanium dioxide without affecting the hiding power of the product, and the gloss of the finished product, weather resistance, acid and alkali resistance and other indicators have been improved.
(1) Application in primer
Ultrafine barium sulfate has a large specific surface area and a better particle size distribution range. It can be applied to the primer with less binder to make the product have better application and rheology. Used for automotive primer, even if you add more ultrafine barium sulfate can get a smooth and dense coating.
(2) Application in topcoat
Ultrafine barium sulfate is an inert filler with good weather resistance. It is used as a filler for topcoat and can play a long-term protective role even when exposed to an environment that is violated. Because the product has the characteristics of good gloss and small particle size, it can improve the fluidity, surface smoothness, hardness and color stability of the paint.
(3) application in emulsion paint
Due to the excellent characteristics of ultrafine barium sulfate, it can be used in high gloss and mercerized texture paints and "acid-proof" emulsion paints. The paint can also play a role in corrosion protection even when exposed to the atmosphere of industrial areas.
(4) in wood, decorative paint application
Ultrafine barium sulfate has the characteristics of small particle size and low absorption light, especially suitable for the surface paint, varnish and natural lacquer liquid body filler for wood decoration. The products are used for wood decoration, with good gloss, chemical corrosion resistance and weather resistance.
(5) Application in powder coatings
Ultrafine barium sulfate has the characteristics of large filling amount, good brightness, good leveling, strong light retention and good compatibility with all pigments. It is the most ideal filler for powder coatings.
Characteristics, barium sulfate, application, filling, with, particle size, product, primer, wood, decoration
The difference between barium sulfate（BaSO4） and barium sulfite（BaSO3）
Kaolin is a non-metallic mineral, which is a kind of clay and clay rock mainly composed of kaolinite clay minerals. Because it is white and delicate, also known as white earth. It is named after Gaoling Village, Jingdezhen, Jiangxi Province.