Talcum powder in the coating industry
As talc has excellent physical and chemical properties such as lubricity, anti-adhesion, flow aid, refractoriness, acid resistance, insulation, high melting point, chemical inactivity, good covering power, softness, good luster, strong adsorption and so on.
Talc as a filler, the application in the coating is mainly reflected in:
1. High whiteness, uniform particle size and strong dispersion;
2. It can play the role of skeleton;
3. Reduce the manufacturing cost;
4. Improve the hardness of the paint film of the paint;
5. Can increase the stability of product shape;
6. increase tension strength, shear strength, winding strength, pressure strength, reduce deformation, elongation, coefficient of thermal expansion.
Talc as a filler for polyurethane waterproof coatings can not only reduce the volume shrinkage of the coating during curing, improve the abrasion resistance and adhesion of the coating, reduce the cost, but also make the coating have good storage stability and heat resistance.
