Talc powder is an industrial raw material of magnesium silicate minerals, which is made by directly crushing natural talc ore (raw material of talc powder) sorted according to purity grade. The common fineness levels of talc powder include 325 mesh, 400 mesh, 600 mesh, 800 mesh, 1250 mesh to 10000 mesh. Talc powder is usually packed in woven bags and composite paper bags. Talc has the physical and chemical properties such as low hardness, lubricity, fire resistance, acid resistance, insulation, high melting point, chemical inactivity, good hiding power, softness, good luster, and strong adsorption. Talc powder is mainly used in plastics, rubber, paper making, paint and coating, chemical filler and rubber products anti-sticking agent and other industries.
Low end talc powder of 200 to 800 mesh can be used as the filler of putty powder, whitening powder, asphalt felt, roofing paper, asphalt shingles, roof panel, etc., as well as anti-sticking powder of roofing materials. When used as a filler, talc power acts as a stabilizer in the molten asphalt component to increase the stability and weathering resistance of roofing materials. When sprayed on the surface of asphalt shingles or rolled roofing materials, talc powder prevents adhesion of products during production and storage. Low-grade low white and low purity coarse talc powder can be used in the waterproof material industry.
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