摘要
采用DSC对NC/PEG共混物中PEG的非等温结晶过程进行了分析,并利用Jeziorny法对其结晶动力学进行了研究。结果表明,随着NC含量的增加,PEG熔融温度降低,结晶熔融热明显减少。动力学研究表明,NC减慢了PEG的晶体生长速率,原因与结晶过程中存在的两种成核方式和二次结晶有关。
The non-isothermal crystallization of PEG in NC/PEG Blends was investigated by means of DSC, and the Jeziorny theory was employed to describe the non-isothermal crystallization kinetics. It was showed that the crys- tallization melting heat of PEG decreased and molten temperature dropped dramatically as the content of NC in- creased. Based on non-isothermal crystallization results, it was found that NC depressed the growth rate of PEG crystal, it was believed there were two kinds of nucleation mode and secondary crystallization in the progress of PEG crystallization.
出处
《科学技术与工程》
北大核心
2013年第28期8452-8454,8478,共4页
Science Technology and Engineering
基金
总装"十二五"火炸药预研基金(40406010102)资助
关键词
物理化学
NC
PEG
共混物
非等温
结晶动力学
physical chemistry NC/PEG blends non-isothermalcrystallization kinetics
