Conduction and space charges in polymeric dielectrics and nanocomposites

C. C. Reddy
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引用次数: 3

Abstract

Polymeric dielectrics are considered important for several inherent advantages over conventional dielectric materials. Low density polyethylene and cross linked polyethylene are being popularly used as insulation for ac cable application. However, application of these polymers for dc cable insulation is hindered with space charge accumulation. New materials with nano-sized particles included in base polymers were tried out with some successes. But the space charge formation is yet to be understood. Several attempts were made earlier to understand the relation between leakage current conduction in dielectrics and space charge formation. The author presents an understanding on the relation between conduction and space charge and also puts forth recent developments. How nanocomposites could possibly block space charges is also presented.
聚合物介质和纳米复合材料中的传导和空间电荷
聚合物电介质被认为是重要的,因为它比传统的电介质材料有几个固有的优点。低密度聚乙烯和交联聚乙烯被广泛用作交流电缆的绝缘材料。然而,这些聚合物在直流电缆绝缘中的应用受到空间电荷积累的阻碍。在基础聚合物中加入纳米级粒子的新材料的试验取得了一些成功。但是空间电荷的形成还没有被理解。为了理解介电介质中漏电流传导与空间电荷形成之间的关系,前人做过几次尝试。作者对传导与空间电荷的关系提出了认识,并提出了近年来的研究进展。纳米复合材料如何可能阻止空间电荷也被提出。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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