Hyperbranched polyester urethane acrylate ultraviolet-cured coating and preparation method thereof

The invention discloses a modified hyperbranched polyester urethane acrylate ultraviolet-cured coating. The coating comprises the following chemical components in percentage by weight: 40 to 85% of modified hyperbranched polyester urethane acrylate, 10 to 55% of active monomer diluents, 0.5 to 5% of photoinitiator, 0.1 to 2% of flatting agent, and 0.1 to 5% of adhesion promoter; all raw materials account for 100% in percentage by weight; and the modified hyperbranched polyester urethane acrylate is long-chain-acid modified hyperbranched polyester urethane acrylate. The invention also discloses a preparation method of the modified hyperbranched polyester urethane acrylate ultraviolet-cured coating. The coating has the characteristics of being low in viscosity, high in flexibility, high in adhesive force, etc.