高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (9): 1797.

• 研究论文 • 上一篇    下一篇

环氧-丙烯酸酯混杂光固化体系的研究

肖善强, 陈其道, 陈明, 洪啸吟   

  1. 清华大学化学系, 北京 100084
  • 收稿日期:2001-08-03 出版日期:2002-09-24 发布日期:2002-09-24
  • 通讯作者: 洪啸吟(1938年出生),男,教授,博士生导师,从事高分子化学研究.E-mail:hongxy@mai.ltsinghua.edu.cn E-mail:hongxy@mai.ltsinghua.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20074021)资助

Studies on Epoxy-acrylate Hybrid UV-cure System

XIAO Shan-Qiang, CHEN Qi-Dao, CHEN Ming, HONG Xiao-Yin   

  1. Department of Chemistry, Tsinghua University, Beijing 100084, China
  • Received:2001-08-03 Online:2002-09-24 Published:2002-09-24

PDF (PC)

被引次数

79

摘要： 研究环氧-丙烯酸酯混杂光固化体系中引发剂的协同作用,证实混杂光固化过程中自由基引发剂对阳离子引发剂二苯基碘锚盐的增感作用.混杂光固化膜具有优良的机械性能,其抗冲击性能、抗弯曲性能及硬度优于单纯的阳离子体系固化膜,与自由基体系固化膜性能接近;混杂光固化膜的玻璃化转变温度高于自由基体系固化膜;它的耐溶剂性能优异,耐丙酮擦拭次数比自由基固化膜高25倍以上,比阳离子固化膜高3.5倍.这可能是由于混杂光固化过程中形成的IPN结构造成的,动态粘弹谱和扫描电镜的实验结果证实了这一结论.

关键词: 混杂聚合, 紫外光固化, 互穿网络聚合物

Abstract: We studied an epoxy-acrylate hybrid UV-cure system and demonstrated that the diaryliodonium salt can be sensitized by the free radical photo-initiators. The cured product of hybrid UV-cure system has better mechanical properties, such as hardness, bending strength, impact strength, etc., than those of the cationic product. The glass transition temperature (Tg) of hybrid- cured product is higher than that of the free-radical product. The solvent-resistance (double acetone rubs) of hybrid UVcured product is much higher than those of either free-radical product or cationic product. The excellent performance was attributed to the formation of interpenetrating polymer network (IPN), which was demonstrated by dynamic viscoelastic spectra and scanning electron microscope (SEM).

Key words: Hybrid polymerization, UV-cure, Interpenetrating polymer network

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