Research on the Mechanism of Accelerator for Photocurable Resin in 3D Printing  

作　　者：刘海涛 莫健华 黄小毛 

机构地区：[1]State Key Laboratory of Material Processing and Die & Mould Technology,Huazhong University of Science and Technology

出　　处：《Journal of Donghua University(English Edition)》2009年第1期16-20,共5页东华大学学报（英文版）

基　　金：Natural Science Foundation of Hubei Province of China(No.2005ABA181);National Innovation Fund for Small Technology-based Firms(No.05C26214201059)

摘　　要：The photopolymerization kinetics of cycloaliphatic epoxide and oxetane with accelerators were investigated with Real-time Fourier transform infrared spectroscopy(RT-FTIR).The consumption rates of epoxy group and oxetane group as a function of time were obtained by monitoring of the absorption peaks in the 789 cm-1 and 981 cm-1.The effect of accelerators type and the accelerating mechanism were discussed.In general,benzyl alcohol and its analogues with electron-donating substituents are useful accelerators for the cationic polymerization of cycloaliphatic epoxide and oxetane.Activated monomer mechanism and free-radical chain-induced decomposition of onium salt cationic photoinitiator account for the observed accelerating effect on the polymerization rate.The photopolymerization kinetics of cycloaliphatic epoxide and oxetane with accelerators were investigated with Real-time Fourier transform infrared spectroscopy（RT-FTIR）.The consumption rates of epoxy group and oxetane group as a function of time were obtained by monitoring of the absorption peaks in the 789 cm-1 and 981 cm-1.The effect of accelerators type and the accelerating mechanism were discussed.In general,benzyl alcohol and its analogues with electron-donating substituents are useful accelerators for the cationic polymerization of cycloaliphatic epoxide and oxetane.Activated monomer mechanism and free-radical chain-induced decomposition of onium salt cationic photoinitiator account for the observed accelerating effect on the polymerization rate.

关 键 词：ACCELERATOR cationic photopolymerization cycloaliphatic epoxide OXETANE three-dimensional printing Real-time FTIR 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业] TL503.3[核科学技术—核技术及应用]