| 不同官能度环氧树脂的阳离子光固化研究 |
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| 引用本文： | 杨光,邢涛,初增泽,黄鹏程.不同官能度环氧树脂的阳离子光固化研究[J].热固性树脂,2003,18(3):4-6. |
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| 作者姓名： | 杨光 邢涛 初增泽 黄鹏程 |
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| 作者单位： | 北京航空航天大学材料科学与工程学院,北京,100083 |
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| 基金项目： | 航天技术创新基金资助项目。 |
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| 摘 要： | 对4种不同官能度的环氧树脂在紫外光辐照下用一种二苯基碘钅翁盐或两种二烷基苯甲酰锍盐光引发剂进行阳离子光固化的体系作了系统的研究。研究结果表明,二氨基二苯甲烷环氧树脂AG-80不能阳离子光固化,而E-51,711和TDE-85均可在二苯基碘钅翁六氟磷酸盐或1-甲基-1-十二烷基苯甲酰甲基六氟锑酸锍盐作用下进行紫外光引发阳离子聚合,其中二苯基碘钅翁六氟磷酸盐引发E-51环氧树脂阳离子光固化的效果最好,该树脂体系可用做紫外光固化复合材料的树脂基体。研究还发现,在停止紫外光辐照后,由于阳离子聚合链终止困难而使碘钅翁盐引发的环氧树脂光固化体系存在后固化现象,后固化速度与后固化时的温度有关。
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| 关 键 词： | 环氧树脂 紫外光固化 阳离子光固化 碘钅翁盐 锍盐 |
| 文章编号： | 1002-7432(2003)03-0004-03 |
| 修稿时间： | 2003年2月27日 |
STUDY ON PHOTOINITIATED CATIONIC POLYMERIZATION OF DIFFERENT FUNCTIONALITY EPOXY RESINS |
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| Abstract: | The photoinitiated cationic polymerizations of epoxy resins with different functionality (E 51,711,TDE 85 and AG 80)were investigated in the presence of one diphenyliodonium or two kinds of dialkylphenacylsulfonium salt photoinitators.The results showed that the photoinitiated cationic ring openig polymerization of the epoxy resin AG 80 was not be observed.Other epoxy resins could undergo photopolymerization at different rates,and the photoinitiated cationic polymeriation of bisphenol A type epoxide oligomers E 51 with diphenyliodonium salt was much more effective than other initiators.Because the chain termination was difficult in cationic polymerization,the photoinitiated epoxy resin systems using iodonium salt would continue to cure even after the UV light had been turned off. |
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| Keywords: | epoxy resin UV curing photoinitiated cationic polymerization iodonium salt sulfonium salt |
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