• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Cure characterization of unsaturated polyester resin by fluorescence spectroscopy
【24h】

Cure characterization of unsaturated polyester resin by fluorescence spectroscopy

机译：荧光光谱法对不饱和聚酯树脂的固化表征

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

A strong fluorescence emission was observed during cure of an unsaturated polyester resin containing about 30% styrene by weight. As the cure proceeded, the emission intensity at 306 nm increased. Model compound studies confirmed that the unsaturated polyester component exhibited negligible fluorescence when excited at 250 nm where styrene has strong absorption. Based on the studies of styrene/polystyrene mixtures, the fluorescence emission at 306 nm was attributed to a reduced inner-filter effect of styrene monomer. Fluorescence intensity changes following cure at 75degreesC were correlated to the extent of styrene conversion determined by FT-IR spectroscopy, demonstrating that the fluorescence measurement is more sensitive to styrene conversion in the later stages of cure than conventional IR measurements. (C) 2004 Wiley Periodicals, Inc.
机译：在包含约30重量％苯乙烯的不饱和聚酯树脂的固化过程中观察到强烈的荧光发射。随着固化的进行，在306 nm处的发射强度增加。模型化合物的研究证实，当苯乙烯在250 nm处激发时，不饱和聚酯组分在荧光中可忽略不计的荧光。基于对苯乙烯/聚苯乙烯混合物的研究，在306 nm处的荧光发射归因于苯乙烯单体的内部滤光效果降低。 75℃下固化后的荧光强度变化与通过FT-IR光谱测定的苯乙烯转化程度相关，这表明荧光测量在固化的后期比常规IR测量对苯乙烯转化更敏感。 （C）2004年Wiley Periodicals，Inc.

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