Effect of nanoparticles on space charge behavior of XLPE/SiC nanocomposites

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI:10.1109/CEIDP.2015.7352033

Youyuan Wang, C. Wang

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引用次数: 4

Abstract

Nanoparticles have a huge specific surface areas, which may produce a special interface between particles and polymer matrix in nanocomposites. It is effect to improve the electrical and mechanical properties of XLPE insulation materials by adding nanoparticles. By using SiC nanoparticles with diameter of 40nm, the samples with concentration of 1wt%, 3wt% and 5wt% have been prepared. This paper researches on the effect of SiC nanoparticles on space charge behavior of XLPE/SiC nanocomposites. The test results show that all nanocomposites can suppress space charge accumulation, in which the nanocomposites with concentration of 1wt% have the best effect. Meanwhile, there are heterocharges near electrodes in XLPE and XLPE/SiC nanocomposites with concentration of 5wt%. On the contrary, there are homocharges near electrodes in nanocomposites whose concentration is 3wt%. This phenomenon may be caused by different amount of shallow traps in nanocomposites with different concentrations, which may cause different mobility of electrons or holes in nanocomposites.

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纳米颗粒对XLPE/SiC纳米复合材料空间电荷行为的影响

在纳米复合材料中，纳米颗粒具有巨大的比表面积，可以在颗粒与聚合物基体之间形成特殊的界面。纳米颗粒的加入对提高交联聚乙烯绝缘材料的电性能和力学性能都有一定的效果。采用直径为40nm的SiC纳米颗粒，分别制备了浓度为1wt%、3wt%和5wt%的样品。本文研究了SiC纳米颗粒对XLPE/SiC纳米复合材料空间电荷行为的影响。实验结果表明，所有纳米复合材料均能抑制空间电荷积累，其中浓度为1wt%的纳米复合材料效果最好。同时，掺杂浓度为5wt%的XLPE和XLPE/SiC纳米复合材料在电极附近存在异质电荷。相反，在浓度为3wt%的纳米复合材料中，电极附近存在同电荷。这种现象可能是由于不同浓度的纳米复合材料中存在不同数量的浅阱，这可能导致纳米复合材料中电子或空穴的迁移率不同。

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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2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)

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