紫外光引发环氧树脂的下行前线聚合行为  

Curing of Epoxy Resin by UV-light Triggered Descending Frontal Polymerization

作　　者：周建萍[1] 贾仕君 傅万里[1,2] 赵海芳[1] 刘志雷[1] 

机构地区：[1]南昌航空大学材料科学与工程学院,南昌330063 [2]Australian Institute for Bioengineering and Nanotechnology,University of Queensland

出　　处：《高等学校化学学报》2015年第5期1019-1024,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51363017;51303078)资助~~

摘　　要：采用紫外光(UV)引发法研究了221型脂环族环氧树脂的下行前线聚合行为.探讨了光引发剂、热引发剂用量和预热温度等对聚合前线的推动速率Vf和前线引发时间ti的影响,并利用傅里叶变换红外光谱(FTIR)、热重(TG)和差示扫描量热(DSC)等对固化物结构和热性能进行了表征.研究结果表明,提高光引发剂浓度、热引发剂浓度或预热温度,均可提高聚合前线的推动速率Vf,缩短引发时间ti.采用该技术制备的环氧树脂固化物具有较好的均一性及热稳定性.221 type alicyclic epoxy resin was cured by UV-light initiated descending frontal polymerization.The effect of amount of photo / thermal initiator,pre-heating temperature on the frontal velocity Vfand frontal initiating time tiwas investigated.The structure and thermal properties of the cured products were characterized via Fourier transform infrared spectroscopy（FTIR）,thermogravimetric analysis（TG） and differential scanning calorimetry（DSC）.The results show that frontal velocity Vfincrease with increasing of concentration of photo / thermal initiator or preheating temperature,while frontal initiating time decrease.Analysis of the FTIR spectrum indicates that the products were obtained uniformly.TG and DSC results reveal that the products exhibit good thermal stability.

关 键 词：前线聚合 环氧树脂 紫外光引发 推动速率 热性能 

分 类 号：O633.13[理学—高分子化学] TQ264.1[理学—化学]