干法工艺制备PE–UHMW纤维  

Preparation of PE–UHMW Fiber by Dry Spinning

作　　者：孙勇飞[1,2,3] 王新威[1,2,3,4] 郑晗[1,2,3] 张玉梅[1,2,3] 吴向阳[1] 李建龙[1,2,3,4] Sun Yongfei;Wang Xinwei;Zheng Han;Zhang Yumei;Wu Xiangyang;Li Jianlong(Shanghai Research Institute of Chemical Industry, Shanghai 200062, China;Shanghai Key Laboratory of Catalysis Technology for Polyolefins, Shanghai 200062, China;State Key Laboratory of Polyolefins and Catalysis, Shanghai 200062, China;Shanghai Lianle Chemical Industry Science and Technology Co. Ltd., Shanghai 201512, China)

机构地区：[1]上海化工研究院,上海200062 [2]上海市聚烯烃催化技术重点实验室,上海200062 [3]聚烯烃催化技术与高性能材料国家重点实验室,上海200062 [4]上海联乐化工科技有限公司,上海201512

出　　处：《工程塑料应用》2016年第11期58-61,共4页Engineering Plastics Application

基　　金：上海张江国家自主创新示范区专项发展资金项目(201501-PTB108-003;201505-PT-C104-018)

摘　　要：采用干法纺丝工艺,以超高分子量聚乙烯(PE–UHMW)纤维专用树脂为原料,制备高性能PE–UHMW纤维,通过电子拉力机、扫描电子显微镜、差示扫描量热仪对不同后拉伸倍率的纤维进行力学性能和微观结构分析。结果表明,随着拉伸倍率的增加,纤维初生丝结晶度由49.57%逐渐提高至72.17%,拉伸倍率50倍以后,结晶度逐渐趋于平稳;随着拉伸倍率的增加,纤维的力学性能逐渐增强,在拉伸倍率达到83.3倍时,纤维的力学性能达到最佳,纤维断裂强度为31.53 c N/dtex,断裂伸长率为2.69%,断裂模量为1 054.78 c N/dtex;纤维微观表面结构也发生有规律的变化。High-performance ultra-high molecular weight polyethylene(PE–UHMW) fibers were prepared using advanced dry spinning process,with fiber special resin as raw materials. The mechanical properties and microstructure of PE–UHMW fibers with different draw ratio were characterized and analyzed through electronic testing machine,SEM and DSC. The results show that the crystallinity degree of PE–UHMW fibers increases from 49.57% to 72.17% with the increase of drawing ratio,and gradually stabilizes when drawing ratio is more than 50 times. With the increase of drawing ratio,the mechanical properties of the PE–UHMW fiber enhances gradually. When the drawing ratio is 83.3 times,the mechanical properties reaches the maxmium,the breaking strength of the fibers is 31.53 cN/dtex,the elongation at break is 2.69% and the breaking modulus is 1 054.78 cN/dtex. The surface of PE–UHMW micro fibers structure also begin to vary regularly.

关 键 词：超高分子质量聚乙烯纤维 干法纺丝 拉伸倍率 结晶 力学性能 

分 类 号：TQ342[化学工程—化纤工业]