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四苯基硼季铵盐的合成和光引发性能
Synthesis and Photoinitiation Property of Quaternary Ammonium Tetraphenylborate
【摘要】 合成了含六亚甲基四胺和三乙二胺的 2种四苯基硼季铵盐 ,通过元素分析、核磁共振、紫外光谱等对其进了结构表征 ;其引发三羟甲基丙烷三丙烯酸酯 (TMPTA)紫外光固化时是氧阻聚的 ,发生的是自由基反应 ;进行了不同温度下引发TMPTA的光照DSC实验 ,发现光引发效率随温度升高而增强 ,计算出光引发聚合反应的活化能为 4 4 4kJ/mol;热重实验表明 ,二者均有很好的热稳定性。
【Abstract】 Two kinds of quaternary ammonium tetraphenylborates(QA salt-BPh4) have been synthesized and characterized by elemental analysis, nuclear magnetic resonance spectroscopy and UV spectroscopy. The polymerization of tri- methylolpropane triacrylate(TMPTA) initiated by them under UV light illumination appeared to be radical polymerization and could be inhibited by oxygen. It was found from the results of photo-DSC of TMPTA at different temperature that the photoinitiation efficiency increased with polymerization temperature and the activation energy was calculated to be 44.4 kJ/mol. Thermogravimetry proved that the product had very good thermostability.
【Key words】 quaternary ammonium tetraphenylborate; free radical polymerization; photoinitiation efficiency;
- 【文献出处】 应用化学 ,Chinese Journal of Applied Chemistry , 编辑部邮箱 ,2004年05期
- 【分类号】O631.22
- 【被引频次】1
- 【下载频次】202