Preparation of low viscosity epoxy acrylic acid photopolymer prepolymer in light curing system

Abstract

With the integration and development of materials engineering, applied mechanics, automatic control and bionics, light cured composite has become one of the most favourite research topics in the field of materials and engineering at home and abroad. In the UV curing system, the prepolymer and the reactive diluent form the backbone of the cured material together. And they account for more than 90% of the total mass. The basic properties of the cured product are mainly determined by the prepolymer. A low viscosity epoxy acrylate photosensitive prepolymer with a viscosity of 6800 mPa • s (25°C ) was obtained by esterification of 5 hours with bisphenol A epoxy resin with high epoxy value and low viscosity.