快速成型光固化树脂的制备

Preparation of Stereolithography Resin

主要选用4种环氧树脂与丙烯酸制备了快速成型光固化树脂的预聚物,探讨了反应温度及催化剂对反应速率的影响,确定最佳反应温度为100℃和三苯基膦为最佳催化剂。以自制的预聚物、光引发剂、稀释剂等为组分制备了一系列的快速成型光固化树脂,通过性能检测表明,E–51环氧丙烯酸酯是最佳预聚体,819是最佳的光引发剂,并且得到的快速成型光固化树脂可以在65℃下长期避光保存而不变质。研究的快速成型光固化树脂已经投入生产,具有非常优异的商业价值。

Four different prepolymers applied for stereolithography resin were synthesized by utilizing four different kinds of epoxy resins to react with acrylic add respectively. The effect of different types of reaction temperature and catalysts on the reaction rate were dicussed. The optimum synthetic conditions were that the reaction temperature was 100℃, and the most suitable catalyst was triphenylphosphine. Then a series of stereolithography resins were prepared with the prepolymer synthesized before, photoinitiators, diluents as components. The properties of the cured resin were determined. The results show that E-51 epoxy acrylate is optimal prepolymer and 819 is the best photoinitiator, the stereolithography resin can be stored away from light without deterioration at 65 ℃ .The stereolithography resins have been put into production which have very excellent commercial value.