Study on nano-CaCO3 modified epoxy powder coatings

Powder coatings are widely used for their environmental and economical advantages. In this work nano-CaCO3 modified powder coatings were prepared using epoxy resin/nano-CaCO3 composites obtained through in situ and inclusion polymerization and the nano-CaCO3 can be well dispersed in the resultant coatings by this preparation method. Their tensile property, cupping property and neutral salt spray corrosion resistance were distinctly improved. The mechanism of property improvement was discussed.