中文摘要：

采用界面聚合技术获得了新型光热敏微胶囊信息记录与显示材料,利用红外光谱技术和热显影技术研究了不同光引发剂的光吸收特性及浓度变化对微胶囊信息材料聚合与显色密度的影响。实验结果表明,光引发剂由于在紫外波段光吸收能力的差异造成引发微胶囊内部单体聚合效率的不同,光引发剂联合应用引发单体聚合效果好于单独应用,且光引发剂引发聚合效率随浓度的增加出现先增大后减小的变化;光聚合产物对部分染料分子形成包裹与冻结作用,造成微胶囊显色密度的下降,且显色密度下降程度随光引发剂引发聚合效率的提高逐渐增大。根据实验结果得出微胶囊内部光引发剂适宜浓度范围为5%～7%。

英文摘要：

The photo-thermal sensitive microcapsule is synthesized with interfacial polymerization method,which is a new type of optical information recording and displaying function material.Effects of photoabsorption properties and concentration of photoinitiator on the polymerization and imaging density of photo-thermal microcapsule are investigated by infrared spectroscopy technology and thermal imaging technology.Results show that initiating efficiency of photoinitiator is different because of absorbability difference in the ultraviolet range,and joint application of photoinitiator ITX and 819 makes the polymerization efficiency increase.The initiating efficiency of photoinitiator first increases and then decreases with the concentration of photoinitiator.Partial dye precursor molecules are enwrapped and frozen by the polymerization production,which causes the imaging density of photo-thermal microcapsule decrease,and imaging density contrast increases gradually with initiating efficiency of photoinitiator.The optimum concentration of photoinitiator was 5%-7% in microcapsule.