CAJ | 학술논문

对典型刚性结构的对位芳酰胺纤维和柔性结构的超高分子量聚乙烯纤维的结构特征及其形成过程进行分析,特别是纺丝及热处理工艺对纤维结构变化的影响,认为若使有机合成纤维高强化,应使纤维在结构上满足以下2个特征:高取向度和结晶度;聚合物分子链能够充分伸展形成伸直链结晶.同时,介绍了 PPTA 纤维和UHMWPE 纤维的进展情况.提出能够形成高取向、高结晶度且分子链充分伸直结构的聚合物,可以通过控制纺丝和热处理工艺制造出高强纤维.
대전형강성결구적대위방선알섬유화유성결구적초고분자량취을희섬유적결구특정급기형성과정진행분석,특별시방사급열처리공예대섬유결구변화적영향,인위약사유궤합성섬유고강화,응사섬유재결구상만족이하2개특정:고취향도화결정도;취합물분자련능구충분신전형성신직련결정.동시,개소료 PPTA 섬유화UHMWPE 섬유적진전정황.제출능구형성고취향、고결정도차분자련충분신직결구적취합물,가이통과공제방사화열처리공예제조출고강섬유.
Structure characteristics and formation processes of the typical rigid structure of P-aramid (PPTA) fibers and the typical flexible structure of ultra-high molecular weight polyethylene (UHMWPE) fibers are analyzed,in particular,the effect of spinning and heat treatment process on fiber structures.It is considered that for obtaining high-strength synthetic fibers,two conditions in structure should be satisfied:high degree of orientation and crystallinity;polymer molecular chain can be fully extended to form straight-chain crystallization.The current progress of PPTA fibers and UHMWPE fiber is also introduced.It is proposed that the polymer which can form a highly oriented structure with high crystallinity and full extension of molecular chain can be used to produce high strength fibers by controlling the spinning and heat treatment process.