膨胀单体在3D打印用光敏树脂中的应用

Monomer expansion use in 3D printing photosensitive resins

为解决3D打印用光敏树脂固化收缩引起成型失败的问题,经两步法合成了一种螺旋原碳酸酯类膨胀单体,并对该单体进行了一系列的表征。通过对单体进行红外和核磁表征确定了产物的结构。将膨胀单体应用到光敏树脂中,通过对比固化前后树脂的红外表明,膨胀单体进行了双开环聚合。通过对收缩率的测定确定添加量为质量分数10%,收缩率由5.80%降至4.49%。对固化后树脂进行了凝胶含量、力学性能测试,确定了膨胀单体对光敏树脂的其它影响。

To solve the problems of forming failure caused by 3Dprinting photosensitive resin shrinkage,The helical expansion original carbonate monomer was synthesized by a two step process and conducted by a series of test methods.The construction of the monomer product was determined by the characterization of IR and NMR.Expansion monomers took place double ring opening polymerization by characterization of IR.Adding amount was determined 10% By measuring the shrinkage rate of photosensitive resin and By measuring the gel content and tensile strength,It determined expansion monomers effect on other performance of photosensitive resin.