Drawing behavior and mechanical properties of ultra-high molecular weight polyethylene blends with a linear polyethylene wax
Drawing behavior and mechanical properties of ultra-high molecular weight polyethylene blends with a linear polyethylene wax
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超高分子量聚乙烯与线性聚乙烯蜡混合物的拉伸行为和机械性能
DOI：
10.1016/j.polymer.2018.01.083
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发表时间：
2018-09-26
期刊：
影响因子：
4.6
通讯作者：
Bastiaansen, Cees W. M.
中科院分区：
文献类型：
--
作者：
Shen, Lihua;Severn, John;Bastiaansen, Cees W. M.
将超高分子量聚乙烯（UHMWPE; M-w = 103 kg/mol）与低分子量线性聚乙烯（PE蜡; M-w = 1 kg/mol）共混，并探索固态拉伸行为和机械性能。结果表明，低分子量聚乙烯蜡作为UHMWPE的溶剂，这导致共混物的流变性能和可达到的最大拉伸比的改善。在不除去溶剂的情况下，拉伸膜的最大可达到杨氏模量增加超过2倍。此外，发现当添加60重量%的PE蜡时，拉伸共混物的最大可达到的拉伸强度也从近似1GPa显著增加到近似1.5GPa。基于这些结果，提出了一种新的路线，用于加工高取向聚乙烯，它具有某些共同的特点，与熔融纺丝和溶液纺丝，但事实上，不是这两个。(C)2018爱思唯尔有限公司版权所有
Ultra-high molecular weight polyethylene (UHMWPE; M-w = 103 kg/mol) is blended with a low molecular weight, linear polyethylene (PEwax; M-w = 1 kg/mol) and the solid state drawing behavior and mechanical properties are explored. The results indicate that the low molecular weight polyethylene wax acts as a solvent for the UHMWPE which leads to an improvement in rheological properties and the maximum attainable draw ratio of the blends. The maximum attainable Young's modulus of the drawn films increases with more than a factor 2 without removal of the solvent. Moreover, it is found that the maximum attainable tensile strength of the drawn blends also increases significantly from similar to 1 GPa to similar to 1.5 GPa upon addition of 60 wt% of the PEwax. Based on these results, a new route is proposed for the processing of highly oriented polyethylene, which has certain characteristics in common with both melt spinning and solution spinning but, in fact, is neither of the two. (C) 2018 Elsevier Ltd. All rights reserved.