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首页> 外文期刊>Journal of Applied Polymer Science >EFFECT OF ZONE DRAWING ACCOMPANIED WITH CROSSLINKING ON THE STRUCTURE AND PROPERTIES OF ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE GEL FILM
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EFFECT OF ZONE DRAWING ACCOMPANIED WITH CROSSLINKING ON THE STRUCTURE AND PROPERTIES OF ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE GEL FILM

机译：交联区拉伸对超高分子量聚乙烯凝胶膜结构和性能的影响

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摘要

To enhance the thermal properties of ultrahigh molecular weight (UHMW) (viscosity-average molecular weight of 6 x 10(6)) polyethylene (PE) gel film, this was crosslinked by dicumyl peroxide (DCP) during a high-temperature zone drawing, which is effective to orient film. Through a series of experiments, it turned out that crosslinking actualized by an optimum amount of DCP and high-temperature zone drawing technique caused significant changes in the structure and properties of UHMW PE gel film. That is, crosslinking increased storage modulus of UHMW PE gel film at 25 degrees C, resulting in improving thermal properties of the film. On the contrary, the crosslinking effect played a hindering role in raising the draw ratio of UHMW PE gel film. Maximum storage modulus of 165 GPa at 25 degrees C could be obtained at the draw ratio of 324 of uncrosslinked homo-PE gel film. In the case of crosslinked PE gel film, the highest storage modulus at 25 degrees C reached 65 GPa at maximum draw ratio of 150. Crosslinked film exhibited high modulus, even at 190 degrees C, to some extent, while uncrosslinked homo-PE gel film was molten completely at 150 degrees C. (C) 1997 John Wiley & Sons, Inc. [References: 20]
机译：为了增强超高分子量（UHMW）（粘均分子量为6 x 10（6））聚乙烯（PE）凝胶薄膜的热性能，在高温区域拉伸过程中，将其用过氧化二枯基（DCP）交联，可以有效地定向胶片。通过一系列实验，结果表明，通过最佳量的DCP和高温区拉伸技术实现的交联导致UHMW PE凝胶膜的结构和性能发生了显着变化。即，在25℃下交联增加了UHMW PE凝胶膜的储能模量，从而改善了膜的热性能。相反，交联作用在提高UHMW PE凝胶膜的拉伸比方面起着阻碍作用。在未交联的均质PE凝胶薄膜的拉伸比为324的情况下，在25摄氏度下可获得165 GPa的最大储能模量。在交联PE凝胶薄膜的情况下，最大拉伸比为150时，在25摄氏度下的最高储能模量达到65 GPa。即使未交联的均质PE凝胶薄膜，即使在190摄氏度下，交联薄膜也表现出高模量。在150摄氏度下完全熔化。（C）1997 John Wiley＆Sons，Inc. [参考：20]

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