Synthesis and Study of Novel UV-Curable Powder Coatings

Two kinds of acrylate-modified polyesters were synthesized, one of the two is semi-crystalline while the other is amorphous, and the UV-curable powder coatings with two components can be made up by mixing these two kinds of polyesters in different ratios. Experiments show that the introduction of semi-crystalline polyester into the coating will substantially improve the direct and reverse impact resistance and the crosshatch adhesion of the cured film while the other general properties of the UV-curable powder coatings remain excellent.