固态缩聚尼龙1010的熔化行为

The Melting Behavior of Nylon-1010 Prepared by Solid State PolycondensationThe Melting Behavior of Nylon-1010 Prepared by Solid State Polycondensation

本工作借助示差扫描量热法和X-射线衍射分析法(WAXD)首次研究了固态缩聚反应所得初生态尼龙1010的结晶特征和熔化行为。实验结果表明:固态缩聚反应的温度和时间以及产物分子量对初生态尼龙1010的熔化行为有着明显的影响。初生态尼龙1010结晶熔融双峰的显隐与其X-射线衍射峰特征没有明显的依赖关系,但随着尼龙大分子结晶的完善化而出现表观体积收缩观象。

By using the thermal analysis and X-ray diffraction analysis techniques,we have investigated the multiple behavior and structure characteristics of nascent nylon-1010 prepared by solid-state polycondcnsation.The results indicate that a variety of factors including the temperature and time of raction,the molecular weight and heat history(quenching or annealing)of samples have effects on the multi-melting behavior characteristics and the couse of the crystallization of nyloh-1010 macro-molecules are associated with(imperfect crystallite or better crystal lallicc)the hear history of samples.In the course of hear treatment,nascent nylon-1010 resulted in a more dense packing with its macromolecular crystals turning to better perfect.