标题：Structure and tensile properties of melt spun UHMWPE fibers in drawing process
作者：Zhang, Qiang ;Wang, Qingzhao ;Chen, Yong
作者机构：[Zhang, Qiang ] School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China;[Wang, Qingzhao ;Che 更多
来源：Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
摘要：Ultra high molecular weight polyethylene (UHMWPE) fibers with the tensile strength of 1.5 GPa were successfully prepared by melt-spinning process. The structure and tensile properties were studied by XRD, DSC, SAXS and mechanical measurements. The results show that with the increase of draw ratio, the crystallinity of UHMWPE fibers increases, the grain size decreases, the defects decrease, the orientation degree increases and the tensile properties increase; the changes of structures and tensile properties of UHMWPE fibers made by melt-spun are similar with that of the fibers made by gel-spun drawing process. The low effective d raw ratio may be the key of restrictions in the improvement of the tensile properties of UHMWPE fibers.