Mica powder widely use in high-grade paint, coating, ink, rubber, plastics, wire ,cable and so on. Mica Powder Fineness of Mica powder ... ,paint,rubber,can improve the mechanical strength,increase toughness,adhesive force,anti-aging and corrosion resistance.2. its insulativity,heat resistance ... %Iron oxide (Fe2O3)0.06%Water content (H2O)0.25% High quality Mica Powder