Evaluation of Electrical Treeing and Dielectric Spectroscopy of Silicone Rubber Nanocomposites under Thermal Ageing

2021 22nd International Middle East Power Systems Conference (MEPCON) Pub Date : 2021-12-14 DOI:10.1109/MEPCON50283.2021.9686217

M. E. Ibrahim, A. M. Abd-Elhady, Elmasry S. Elmasry, M. Izzularab

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Abstract

In this paper, the effect of thermal ageing on the behavior of electrical treeing in silicone rubber nanocomposites is evaluated. The evaluation is carried out considering different nanofiller types. The adopted nanofillers are SiO2 and ZrO2. Accordingly, silicone rubber nanocomposites samples are prepared considering different nanofiller types with different nanofiller concentration levels. Three different concentration levels of each nanofiller types are evaluated; 0.1, 0.5 and 1 %wt. The effect of thermal ageing is carried out at ageing temperatures of 120 oC and 180 oC. The electrical treeing test is carried out by applying fixed AC voltage with a frequency of 50 Hz on the prepared samples considering needle-plane electrode configuration. The electrical tree test is preformed after each week and the evaluation is based on the electrical tree length as well as the tree shape. The obtained results are validated using FEM software. Finally, the evaluation of dielectric spectroscopy of silicone rubber nanocomposites is carried out considering ageing temperature of 180 °C.

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热老化下硅橡胶纳米复合材料的电学树和介电光谱评价

本文研究了热老化对硅橡胶纳米复合材料电树行为的影响。考虑不同类型的纳米填料进行了评价。采用的纳米填料为SiO2和ZrO2。因此，考虑不同的纳米填料类型和不同的纳米填料浓度，制备了硅橡胶纳米复合材料样品。评估了每种纳米填料类型的三种不同浓度水平;0.1, 0.5和1% wt。在120℃和180℃的时效温度下进行热时效。考虑针平面电极结构，在制备的样品上施加频率为50 Hz的固定交流电压，进行电树试验。每周结束后进行电树测试，根据电树长度和树形进行评估。利用有限元软件对所得结果进行了验证。最后，在老化温度为180℃的情况下，对硅橡胶纳米复合材料的介电光谱进行了评价。

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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2021 22nd International Middle East Power Systems Conference (MEPCON)

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