Effect of filler concentration on the breakdown strength of epoxy nanocomposites

2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA) Pub Date : 2017-10-01 DOI:10.1109/CERA.2017.8343331

K. Elanseralathan, V. Karthick, R. R. Kumar, Sharath Raj Mellam

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引用次数: 1

Abstract

Recent trends in the field of high voltage engineering attracts attention over the development of advanced electrical insulation systems. Electrical treeing due to highly divergent electric stress is one of the major threats to the electrical insulation. Once a treeing channel is incepted, it will lead to the propagation of electrical trees followed by insulation failure and electrical breakdown. Inclusion of nano-fillers in the base polymer(Epoxy resin) is found to resist the propagation of trees and improves the breakdown strength. This work attempts to study the effect of nano-fillers such as TiO2, ZnO, MgO with various filler concentrations for one gap distance. Test samples are made with needle plane electrode configuration to express the real time highly divergent electric field stress experienced by the cables. Neat epoxy samples were used as reference. High voltage AC at power frequency is the waveform used for the tests. The results show that Titanium oxide nano-composites exhibits higher breakdown strength than zinc oxide and Magnesium oxide nano-composites at 2 wt. % concentration. Further analysis of the results exhibits that 2 wt. % nano-fillers enhances while 1 wt. % worsens the electrical treeing resistance than neat epoxy.

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填料浓度对环氧纳米复合材料击穿强度的影响

高压工程领域的最新发展趋势是开发先进的电气绝缘系统。由于电应力高度发散而产生的电树是对电气绝缘的主要威胁之一。一旦树形通道被接收，它将导致电气树的传播，随后是绝缘失效和电气击穿。研究发现，在基体聚合物(环氧树脂)中加入纳米填料可以抵抗树木的繁殖，提高击穿强度。本文试图研究不同浓度的TiO2、ZnO、MgO等纳米填料对一个间隙距离的影响。测试样品采用针平面电极结构，以实时表达电缆所承受的高度发散电场应力。以整齐的环氧树脂样品为对照。高压交流电在工频是用于测试的波形。结果表明:在2 wt. %的浓度下，氧化钛纳米复合材料的击穿强度高于氧化锌和氧化镁纳米复合材料;进一步分析结果表明，与纯环氧树脂相比，2 wt. %的纳米填料增强了环氧树脂的导电性能，而1 wt. %的纳米填料则使环氧树脂的导电性能恶化。

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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来源期刊

2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)

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