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The Application of Precipitated Barium Sulfate in PVC Profile Industry

2015/03/21  bmschem

    Structure and characteristics: Microcrystalline barium sulfate by chemical synthesis has a particle size of D50 0.35um to 0.4um. It has stable chemical property, no physiological toxicity, insolubility in water and any organic solvent, acid and alkali resistance, high temperature resistance, flame retardant, electrical insulation and UV shielding.

    Product application: Barium sulfate specially designed for PVC profile can replace part of titanium dioxide. Belonging to PVC reinforcing filler, it can limitedly change PVC production and processing and reduce the cost.

     Features and benefits:

   1 If mixed with titanium dioxide powder according to a certain proportion, it will show good space isolation capability with titanium dioxide and PVC particles. With good particle size distribution and dispersion, it forms peak valley in profiles and reduces electrostatic.

    2 Its good dispersity, narrow particle size distribution, good affinity with PVC and titanium dioxide particles and easy blending eliminates optical flocculation generated in extrusion process, improves surface finish, makes the visible surface of profile smooth with uniform color, brings neat end face and reduce the trace of shrinking caused by unevenness and processing technic; It enhances toughness and is suitable for rolling with shock resistance, ageing resistance and invariant color.

    3 Efficient thermal stability (chemical change occurs above 1580℃), reduces the rate of size change after profile being heated and enhances the stress. With good weather resistance, it can be widely used in high light and high weather-resistance materials!

    Processing requirement: Add into PVC after well mixed with titanium dioxide at a certain ratio.