Ultrafine barium sulfate has outstanding characteristics in different paint and coating industries
Ultrafine barium sulfate has outstanding characteristics in different paint and coating industries
The coating industry is an important consumption area of precipitated barium sulfate, accounting for about 60% of the total consumption.
High-solid paint: 0.7-0.8μm micropowder-grade precipitated barium sulfate is used for high-solid glossy finish paint, which can reduce VOC and replace some expensive titanium dioxide;
Black paint: White powdery precipitated barium sulfate can also be used for pure black paint without affecting the black color, which is related to the refractive index of precipitated barium sulfate, which is similar to the refractive index of commonly used resins, so that the precipitated sulfuric acid incorporated into the system Barium is not white but transparent and thus does not produce a light gray in carbon black coatings.
Solvent-Based or Electrophoretic Paints: Precipitated barium sulfate can be used to formulate low-haze, bright, high-gloss topcoats as well as very low VOC solvent-borne or electrophoretic paints.
Powder coating: Due to the special properties of precipitated barium sulfate, low demand for binders and excellent dispersibility, it becomes an indispensable component of powder coatings.
Waterborne coatings: Due to the chemical inertness and negligible solubility of precipitated barium sulfate, it is as suitable for waterborne coatings as for conventional coatings.
Conductive coatings: Precipitated barium sulfate after inorganic treatment can be used to formulate bright conductive coatings. The conductive properties of the coating are given by inorganic semiconductors, while other beneficial properties of precipitated barium sulfate remain unchanged.
Automotive coatings: It is well known that precipitated barium sulfate can be used in all coatings of automotive coatings.
Barium sulfate manufacturers are also gradually increasing, and the price difference between the two is also relatively large. So, what is the difference between them? Does the precipitated barium sulfate we often say has the phenomenon of precipitation? Precipitated barium sulfate, theoretically speaking, the solubility product constant of barium sulfate is low, about 087*10^ -10, when the product of sulfate ions in solution, and barium ions. After reaching the solubility product constant. The phenomenon of precipitation will occur, and it will appear white after precipitation. If the solubility product is not reached, it will dissolve in solution. No precipitation occurs, and the precipitated barium sulfate can be dissolved by adding acid. Therefore, the precipitated barium sulfate has been classified as a precipitate, and the precipitated barium sulfate is calcined by barite powder at high temperature. Chemically synthesized, mainly used as pigments, such as ink fillers, papermaking materials, flame retardant materials, anti-X-ray materials, ceramics, glass raw materials, special resin mold materials, etc.
