Barium Sulfate super fine high whiteness
Barium sulfate powder coating is a new solvent-free with 100% solid powder coating. It has two broad categories: thermoplastic powder coatings and thermosetting powder coatings.
Paint is formed by the special resin, pigments and fillers, curing agents and other additives, in a certain proportion of mixing, and then hot extrusion and crushing and other processes prepared. They are at room temperature with stable storage, by electrostatic spraying or fluidized bed dip coating, and then heated baking melt curing, so that the formation of flat and bright permanent coating, to achieve the purpose of decoration and corrosion.
The characteristics of barium sulfate powder coating:
The product is non-toxic, solvent-free and non-volatile toxic substances, so no poisoning, no fire, no "three wastes" emissions and other pollution problems, in full compliance with national environmental law requirements
High utilization of raw materials, over-spray powder can be recycled, the utilization rate can reach 99% or more
After the coating pretreatment, one-time construction, without primer, you can get a sufficient thickness of the coating, easy to achieve automated operation, high production efficiency, and can reduce costs
Coating density, adhesion, impact strength and toughness are good, high corners coverage, with excellent resistance to chemical corrosion and electrical insulation properties.
Powder coating easy storage, transportation safety and convenience.
Barium sulfate is the standard for measuring whiteness; barium carbonate is an important raw material for optical glass, which introduces BaO into the glass, thereby increasing the refractive index of the glass and improving other optical properties; used in ceramics to prepare glaze; Barium is an agricultural pesticide; barium nitrate used in fireworks and glass industry; barium permanganate is a green pigment. Precipitated barium sulfate is increasingly equipped with the characteristics of additives. In the production of special precipitation of barium sulfate, the key technologies such as precipitation, physical or chemical secondary treatment are adjusted to achieve the desired, from about a few tenths of a micron to a nanoparticle size distribution, to obtain an inorganic coating or Decentralized.
Barium sulfate in the soluble barium salt such as barium chloride added barium sulfate solution, the resulting precipitate washed, filtered, dried, crushed, sieved into a product. Precipitated barium sulfate is fine and delicate, with high whiteness, acid, alkali, light, heat and chemical properties.Precipitated barium sulfate density of 4.35 g / cm3, oil absorption of 10 to 15%, the refractive index of 1.64. Made of powder coating film high gloss, good leveling, powder coating is currently the largest amount of varieties. Precipitated barium sulfate particle size is small and uniform, good fluidity, generally used for more high-grade powder coating products.
Barite powder is also called natural barium sulfate, natural barite ore by crushing, washing, drying, screening and become a finished product. The purity of natural products is relatively low, between 85 ~ 95%, the density is 4.47 g / cm3, the refractive index is 1.64, the oil absorption is 6 ~ 12%, the particle size distribution is wide and can be used for low cost powder coating.There are also powder manufacturers with higher fineness of barium sulfate instead of precipitated barium sulfate for powder coatings in the natural barium sulfate if the particle size of about 3000 mesh, but also can replace part of the precipitation of barium sulfate. So that the powder coating to achieve the requirements of the various indicators, but also greatly reduce the cost of raw materials.
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