Thermoplastic Cable Insulation Comprising a Blend of Isotactic Polypropylene and a Propylene-ethylene Copolymer
Thermoplastic Cable Insulation Comprising a Blend of Isotactic Polypropylene and a Propylene-ethylene Copolymer
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DOI：
10.1109/tdei.2015.7076758
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发表时间：
2015-04-01
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.
人们对开发既可回收(即热塑性)又能高温操作的交联型聚乙烯(XLPE)的替代材料很感兴趣。在热学方面，聚丙烯是理想的选择，尽管其刚性和低电击穿强度给材料设计带来了挑战性的问题。本文报道了一种丙烯均聚物/丙烯-乙烯共聚物共混物的动态力学性能和薄膜电击穿强度的组成优化。还讨论了使用优化的混合物挤压试验微型材的情况，结果表明，与XLPE绝缘的参照物相比，使用优化的混合物显示出显著改善的电气性能，以直流击穿强度衡量。
There is much interest in the development of replacement materials for crosslinked polyethylene (XLPE) that are both recyclable (i.e. thermoplastic) and capable of high temperature operation. Thermally, polypropylene is the ideal choice, although its stiffness and low electrical breakdown strength make for a challenging materials design problem. We report here on the compositional optimization of a propylene homopolymer/propylene-ethylene copolymer blend in terms of its dynamic mechanical properties and thin film electrical breakdown strength. The extrusion of a trial minicable using the optimized blend is also discussed, which is shown to exhibit a significantly improved electrical performance, as gauged by its DC breakdown strength, than an XLPE-insulated reference.