中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (2): 27-30.

• 研究论文 • 上一篇    下一篇

光引发阳离子聚合反应的研究Ⅲ．硫鎓盐BDS引发环氧化合物光聚合的DSC研究

陈用烈, 郑牧, 梁兆熙   

  1. 中山大学高分子研究所 广州 510275
  • 收稿日期:1993-03-16 修回日期:1993-08-30 出版日期:1994-04-10 发布日期:1994-04-10
  • 基金资助:
    国家自然科学基金资助项目

Study on Photoinitiated Cationic Polymerization Ⅲ. DSC Study on Photopolymerization of Epoxides Initiated with Sulfonium Salt BDS

Chen Yonglie, Zheng Mu, Liang Zhaoxi   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou 510275
  • Received:1993-03-16 Revised:1993-08-30 Published:1994-04-10 Online:1994-04-10

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摘要： 用改装的国产CDR-1型DSC仪研究了苯基缩水甘油醚(PGE)和环氧树脂(E-51)以双-[4-(二苯硫基)苯基)硫-二-六氟化磷引发的光聚合。研究了引发剂浓度、光强、温度等因素对聚合反应的影响,对于PGE,聚合速率与引发剂浓度的0.90次方、与光强的0.78次方成比例,对于E-51,聚合速率与引发剂浓度的0.87次方成比例,而与光强的关系则比较复杂,温度分别超过70℃(对PGE)或80℃(对E-51)后,对提高聚合反应速率的作用已不明显。作为活性稀释剂,PGE可以较大地提高E-51的聚合速率。

关键词: 苯基缩水甘油醚, 环氧化合物, 硫盐, 光聚合, DSC

Abstract: The photopolymerization of phenylglycidylether(PGE)and an epoxy resin (E-51) initiated by bis-[4-(diphenylsulfonio)phenyl]sulfide-bis-hexafluorophosphate[BDS(PF6)2] has been studied using a modified home-made CDR-1 model differential scanning calorimeter. For PGE,the polymerization rate was proportional to the 0.90 power of the initiator concentration and to the 0.87 power of the light intensity. For E-51,the polymerization rate was proportional to the 0.78 power of the initiator concentration, whereas the influence of light intensity was rather complicated. The polymerization rate increased with temperature markedly at≤70℃(for PGE) or≤80℃(for E-51).PGE as a reactive diluent greatly increased the polymerization rate of E-51.

Key words: phenylglycidylether, epoxide, sulfonium salt, photopolymerization, DSC

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