UHMWPP/UHMWPE合金纤维非等温结晶动力学研究  

Kinetics of Non-isothermal Crystallization of UHMWPP/UHMWPE Composite Fiber

作　　者：庄园园[1] 司小娟[1] 陈建军[1] 程丹丹[1] Jeong Cheol Kim 王依民[3] 

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]韩国工业技术研究院 [3]纤维材料改性国家重点实验室,上海201620

出　　处：《合成纤维》2009年第2期30-33,共4页Synthetic Fiber in China

基　　金：上海市重点学科资助项目(编号B603)

摘　　要：运用DSC手段研究了UHMWPP/UHMWPE合金纤维的非等温结晶行为。对所得的实验数据用修正Avrami方程的Jeziorny法进行处理,发现随冷却速率的提高,半结晶时间t1/2缩短,表明冷却速率加快时,结晶速率也随之加快;纯UHMWPP主要是以三维球晶的方式进行结晶生长;UHMWPE的加入起到成核剂的作用,随着成核剂含量的增加,UHMWPP的结晶维数将降低。The kinetics of non-isothermal crystallization of UHMWPP （ultra-high molecular weight polypropylene）/UHMWPE （ultra-high molecular weight polyethylene）composite fiber was studied by means of differential scanning calorimetry （DSC）. The modified Avrami theories of Jeziorny was used to analyze the results from DgC. The values of tin showed that crystallization rate increased with the increase of cooling rate. UHMWPE served as nucleating agent to speed the crystallization of the UHMWPP/UHMWPE composite tiber. With the increase of nucleating agent, the tridimensional growth of spherulites changed.

关 键 词：超高相对分子质量聚丙烯 超高相对分子质量聚乙烯 非等温结晶 冷却速率 动力学 

分 类 号：TQ342.62[化学工程—化纤工业]