Sun Xiaoying，Cao Ruijun,Fan Shengqiang
(School of Sciences,Xi'an Jiaotong University,Xi'an 710049,China)
Abstract：For decreasing shrinkage of the ultraviolet-cured film， two mixtures of epoxy acrylate and oligomer with big relative molecular mass are proposed. The volumetric shrinkage of the two proposed resins is measured to be around 5.5%. Their viscosities at 30 degrees C are 360 mPa·s and 520 mPa·s, respectively, and both exhibit a high curing speed and tension strength.
Keywords：volumetric shrinkage;ultraviolet-curable resin;rapid prototyping