Photo polymerization of Thiol-hyperbranched Polysilazanes
(0) The kinetics of UV curable thiol-hyperbranched polysilazanes (HBP) was studied by differential photo-scanning calorimeter (DPC) technology.The effects of photo initiator concemration I,light intensity I0 and temperature on the UV curing rate and the final unsaturated double bond conversion of thiol-HBP were investigated.The results indicate that the dependence of polymerization rate Rp on I and I0,respectively,was found to fit with theoretical predictions very well at I no more than 0.50wt% and I0 lower than 19.40mW/cm2.The kinetic parameters were calculated by autocatalytic model,and correspondingly,the total apparent reaction exponent and apparent activation energy are 8.76 and 13.97kJ/mol,respectively.
Hyper branched polysilazanes Thiol UV curing Kinetics
Jiale Song Pengwei Hao Chaoqiang Ye LixinChen Weiguang Li
School of Materials Science and Engineering, Chang an University, Xian, 710064, PR China Department of Applied Chemistry, School of Science, Northwestern Polytechnic University, Xian,710072
国际会议
北京
英文
266-270
2012-12-16（万方平台首次上网日期，不代表论文的发表时间）