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  4. 阳离子光引发剂敏化的研究进展

影像科学与光化学 , 2013, 31(1): 69-78. doi: 10.7517/j.issb.1674-0475.2013.01.009

阳离子光引发剂敏化的研究进展

张洪 1, , 李建雄 2, , 刘安华 3,

1.华南理工大学材料科学与工程学院,广东广州510641

2.华南理工大学材料科学与工程学院,广东广州510641

3.华南理工大学材料科学与工程学院,广东广州510641

关键词： 紫外光固化 , 阳离子光引发剂 , 光敏剂 , 光敏化机理

Progresses on Sensitization of Cationic Photoinitiators

常用的阳离子光引发剂吸收波长在250-300 nm,与紫外光固化设备的辐射波长不匹配,光引发速率和效率低.本文介绍了阳离子光引发剂的种类、特点以及使引发剂体系吸收红移的研究,着重总结了阳离子光引发剂的敏化理论和技术.概述的敏化机理包括:能量转移、自由基氧化、激发态复合物和碎片加成.常用敏化方法有:添加光敏剂、扩大分子共轭使吸收红移和键合生色基团.文章还对新型阳离子光引发剂和光敏剂的设计和应用给予了展望.

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