Preparation And Nano-modification Of UV-Curable Resin

In this paper,e-51 epoxy acrylate resin was synthesized as prepolymer,and low shrinkage photosensitive resin was prepared.Ingredients include:prepolymer accounted 60%,IBOA 12%,HDDA 8%,ACMO 6%,PHEA 8%,photoinitiator 184 5%.Its tensile strength was56.52Mpa,bending strength was 85.26Mpa,elongation at break was6.93%,and impact strength was 6.52 J/m².PG and GNSs were used to modify photosensitive resin.When the amount of GNSs added was 0.02%and 0.04%,the elongation at break of composite materials reached 9.8%and 11.3%,and the products tended to be tough.PG and GNSs with addition amount of 0.02%and 0.04%can significantly improve the conductivity of composite materials.GNSs can improve the thermal stability of composites better than PG when the amount of nanometer filler is 0.04%.The surface modification of nano Al₂O₃ by using MMA as modifier,The surface modified nano Al₂O₃ significantly improves the properties of composites compared with unmodified nano Al₂O₃.The gel rate of the surface modified nano Al₂O₃ composite resin with the addition amount of0.2%was 96.3%,and the tensile strength of the surface modified nano Al₂O₃ composite resin with the addition amount of 0.3%was 137%than the pure resin.With the increase of Al₂O₃ content,the thermal stability of surface modified nanometer increases.