...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>JCT research >Kinetic studies of a UV-curable powder coating using photo-DSC, real-time FTIR and rheology
【24h】

Kinetic studies of a UV-curable powder coating using photo-DSC, real-time FTIR and rheology

机译：使用光DSC，实时FTIR和流变学的UV固化粉末涂料的动力学研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The curing kinetics of UV-curable powder coatings based on commercial unsaturated polyesters were monitored using photo-DSC, Real-Time FTIR-ATR and a modified rheometer equipped with a UV source. The effect of physical and chemical factors on curing such as type of photoinitiator, photoinitiator concentration, temperature and atmosphere of curing were evaluated. Coatings containing amounts of photoinitiator from 0.5 to 10 wt% were cured at different temperatures in less than 10 s reaching conversions approximately of 60%. The increase of the temperature of curing reduces the final conversion and also the rate of polymerization due to the chain transfer process and depolymerization that dominates the photopolymerization at high temperatures. The reactivity of the photoinitiators was similar for all the studied photoinitiators apart from benzophenone that was found to be the slowest initiator.
机译：使用光DSC，Real-Time FTIR-ATR和配备有紫外线源的改良流变仪，可以监测基于商业不饱和聚酯的紫外线固化粉末涂料的固化动力学。评估了物理和化学因素对固化的影响，例如光引发剂的类型，光引发剂浓度，固化温度和气氛。包含0.5至10 wt％的光引发剂的涂料在不到10 s的不同温度下固化，转化率约为60％。固化温度的升高降低了最终转化率，还降低了聚合速度，这是由于链转移过程和解聚作用所致，而后者在高温下主导着光聚合作用。除了被发现是最慢的引发剂的二苯甲酮以外，所有研究的光引发剂的光引发剂的反应性都相似。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号