【作者】 王生杰； 范晓东； 王欣；

【Author】 Wang Shengjie, Fan Xiaodong (Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi’an, 710072)

【机构】 西北工业大学理学院应用化学系；

【摘要】 <正>光聚合和光固化由于具有高效、节能、环保等优点,尤其是可以在一些对热敏感的场所使用,近几年已成为科学研究热点及增长速度最快的工业技术之一。其中光引发剂不仅影响引发速率,对固化物的性能(例如毒性、机械性能、热性能等)也有重要影响。同小分子光引发剂相比,高分子光引发剂具有气味低、挥发度低、抗迁移性好、毒性小、树脂相容性好、更多还原

【Abstract】 Three kind of UV-sensitive hyperbranched polycarbosilane based photoinitiators HB1173, HB185, and HB2959 were synthesized via hydrosilylation reaction of hyperbranched polycarbosilane (HBP) and modified low molecular weight photoinitiators. HBP was obtained by polyhydrosilation of AB2 type monomer, methyldiallylsilane. HBP and photoinitiators were characterized by FTIR, 1H NMR, MALLS, and UV-vis. Spectroscopy. The UV-curing behaviors of the blends of photoinitiators synthesized and UV curable epoxy acrylate (EA) resin are studied by FTIR, and then the stability of the EA resins cured with different photoinitiators were investigated by means of TGA. The results indicate that they are indeed suitable polymeric photoinitiators.更多还原