Recyclable Power Cable Comprising a Blend of Slow-crystallized Polyethylenes
Recyclable Power Cable Comprising a Blend of Slow-crystallized Polyethylenes
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DOI：
10.1109/tdei.2013.6451335
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发表时间：
2013-02-01
影响因子：
3.1
通讯作者：
Fairhurst, M. J.
中科院分区：
文献类型：
--
作者：
Green, C. D.;Vaughan, A. S.;Fairhurst, M. J.
交联聚乙烯（XLPE）作为电缆绝缘材料有着成功的历史。然而，近年来，随着环保意识的增强，人们开始关注垃圾回收的难易程度。虽然已经开发了XLPE回收技术，但本报告的重点是开发热塑性替代品。具体来说，选择了高密度和低密度聚乙烯（HDPE: LDPE）的20:80混合物，并进行了非等温结晶过程。研究发现，当冷却速率在0.5 ~ 10 K min（-1）之间时，与XLPE相比，共混物具有更好的击穿强度和高温机械刚度。然后用这样的冷却速率从混合物中挤出试验电缆。最后，将形态设计电缆的击穿行为与LDPE和XLPE参考体系进行了比较。
Crosslinked polyethylene (XLPE) has a successful history as a cable insulation material. Nevertheless, in recent years, as environmental awareness has grown, concerns about the ease with which it can be recycled have emerged. Although technologies have been developed for XLPE recycling, this report concentrates instead on the development of a thermoplastic alternative. Specifically, a 20 : 80 blend of high density and low density polyethylene (HDPE : LDPE) was selected and subjected to a non-isothermal crystallization procedure. It was found that, provided the cooling rate falls between 0.5 and 10 K min(-1), the blend exhibits superior breakdown strengths and high temperature mechanical stiffness compared to XLPE. A trial cable was then extruded from this blend using such a cooling rate. The breakdown behavior of the morphologically-designed cable was finally compared with that of LDPE and XLPE reference systems.