Electrical tree growth in microsilica-filled epoxy resin
Electrical tree growth in microsilica-filled epoxy resin
复制标题
微硅填充环氧树脂中的电树生长
DOI:
10.1109/tdei.2020.008671
复制
发表时间:
2020
影响因子:
3.1
通讯作者:
Chen S
中科院分区:
文献类型:
--
作者:
Chen S
Epoxy resin is widely deployed as a high voltage electrical insulation material when compounded with inorganic fillers. However, in the laboratory, the filler prevents visual observation of the long-term degradation known as electrical treeing. To date therefore, much laboratory testing has been conducted on unrepresentative unfilled materials. Here, the impact of micro-sized fillers on the treeing phenomenon in an epoxy system has been explored. Sub-micrometre resolution 3D reconstructions of electrical trees are reported from X-ray computed tomography (XCT) using an advanced ‘pink beam’ synchrotron light source imaging system. The role of filler particles between 1 and 10 μm in size on tree channel propagation is reported. In highly filled materials (30% by weight) a radical change in tree growth behavior is seen, leading to bush tree rather than branch tree growth. The dielectric breakdown time at constant stress was also found to increase as the square root of the filler level. The change in geometry of tree growth may explain the extended life of filled materials in high voltage applications.
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DOI:
10.1109/tdei.2014.004730
发表时间:
2015
影响因子:
3.1
作者:
R. Schurch;S. Rowland;R. Bradley;P. Withers
通讯作者:
P. Withers
DOI:
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发表时间:
1977
期刊:
IEEE Transactions on Power Apparatus and Systems
影响因子:
--
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DOI:
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发表时间:
2018
影响因子:
3.1
作者:
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发表时间:
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期刊:
影响因子:
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作者:
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通讯作者:
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DOI:
--
发表时间:
2014
期刊:
Conference on Electrical Insulation and Dielectric Phenomena
影响因子:
--
作者:
R. Schurch;S. Rowland;R. Bradley;T. Hashimoto;G. Thompson;P. Withers
通讯作者:
P. Withers