PHOTOCURABLE COMPOSITIONS FOR THREE-DIMENSIONAL PRINTING

摘要

A three-dimensional printing photocurable composition includes from 20 wt% to 70 wt% of an urethane acrylate component, from 20 wt% to 60 wt% of a multifunctional epoxide component, from 1 wt% to 15 wt% of a monomer component, and from 1 wt% to 8 wt% of a photoinitiator component, based on the total weight of the composition. The urethane acrylate component includes the capping reaction product of an acrylate and an isocyanate terminated prepolymer and the isocyanate-terminated prepolymer is the reaction product of a polyisocyanate and at least one polyol having a molecular weight of at least 3000 g/mol. The multifunctional epoxide component includes one or more multifunctional epoxides. The monomer component includes at least one of a multifunctional acrylate monomer and a multifunctional vinyl ether monomer.