Rust prevention mechanism of zinc phosphate  

      The rust prevention mechanism of zinc phosphate has been described in various ways. Meyer proposed in 1963 that zinc phosphate forms complexes with carboxylic acids in coating systems, and it is believed that zinc phosphate slowly dissociates into phosphate ions inside the coating, and the condensed phosphate ions react with the metal surface to form a complex adherent Me-Zn-P2O5 compound coating film, which passivates the metal, or constitutes a complex complex between the metal surface and the paint. complexes between the metal surface and the paint. 

Uses of Zinc Phosphate  

       Zinc phosphate is the most important variety of phosphate antirust pigment. Foreign countries consider it a major development and promotion that zinc phosphate is selected from phosphates, and even regard it as one of the milestones in the development of paint industry. It can formulate all kinds of antirust paints. The refractive index of zinc phosphate is small and the transparency is high, so it is easier to adjust the color in the paint, and it can be used with other pigments to formulate various colors. Zinc phosphate can be formulated with a variety of base materials, including chlorinated rubber, epoxy resin with curing agent, medium oil alkyd and urethane resin. Used in water-based paints, and other standard anti-corrosion paint control experiments show that in most cases zinc phosphate anti-corrosion effect can be comparable to red Dan, calcium lead acid, in some aspects is also better than red Dan. 

      Zinc phosphate is a colorless and non-toxic antirust pigment with good stability, its water resistance and corrosion resistance are good, and it has both protective and decorative functions on the same coating. Zinc phosphate is neutral and has affinity with any paint, so it can keep the paint in good consistency. Zinc phosphate has a blocking and flashing effect, and can form scale-like crystals with good adhesion to metals.