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| Ablation Resistance of Epoxy Resin Based Composite under Pulse Current in the Vacuum |
| Pan Cheng, Shen Wei, Wu Kai, Lü Zepeng, Chang Yuan, Cheng Yonghong |
| State Key Lab of Electrical Insulation and Power Equipment Xi’an Jiaotong University Xi’an 710049 China |
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Abstract As insulation material failure may be caused by ablation due to arc discharge during surface flashover in the pulsed power equipment, it is essential to enhance the ablation resistance of the insulation material so as to extend its service life. This paper mainly studies the influence nano/micro alumina and aluminium hydroxide in epoxy composites on the ablation resistance, by quantifying the mass loss and observing the surface topography of sample after several times surface flashover (the peak value is approximately 10kA, and the waveform is 8/20us). The experimental results show that the addition of inorganic filler to epoxy resin is useful for improving the ablation resistance. The performance of aluminium hydroxide filler is much better than alumina. In the case of aluminium hydroxide/epoxy composites, nano-fillers are superior to micro-particles, but in the case alumina/epoxy composite, micro-fillers behave better than nano-particles.
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Received: 14 October 2010
Published: 07 March 2014
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[1] (美)Robert J Barker, Edl Schamiloglu. 高功率微波源与技术[M]. 刘国治, 周传明, 译. 北京: 清华大学出版社, 2005.
[2] 刘锡三. 高功率脉冲技术[M]. 北京: 国防工业出版社, 2005.
[3] Martin J C. Nanosecond pulse techniques[J]. Proceedings of the IEEE, 1992, 80(6): 934-945.
[4] 赵文彬, 张冠军, 严璋. 复合材料的陷阱参数对其在真空中高压脉冲下沿面闪络特性的影响[J]. 中国电机工程学报, 2007, 27(9): 11-17.
[5] Craig Miller H. Flashover of insulators in vacuum: Review of the phenomena and techniques to improve holdoff voltage[J]. IEEE Transactions on Electrical Insulation, 1993, 28(4): 512-527.
[6] Hulya Kirkici, Mert Serkan, Kalyan Koppisetty. Nano/Micro dielectric surface flashover in partial vacuum[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2007, 14(4):790-795.
[7] Sarathi R, Rajesh Kumar P, Sahu R K. Analysis of surface degradation of epoxy nanocomposite due to tracking under AC and DC voltages[J]. Polymer Degradation and Stability, 2007, 92: 560-568.
[8] Osborne Milton. Pulsed flashover of insulators in vacuum[J]. IEEE Transactions on Electrical Insulation, 1972, 7(1): 9-15.
[9] 丁立健, 李成榕, 王景春, 等. 真空中绝缘子沿面预闪络现象的研究[J]. 中国电机工程学报, 2001, 21(9): 27-32.
[10] Zeng Bin Wang, Yong Hong Cheng, Kai Wu. Effect of UV illumination on surface flashover characteristics of epoxy resin under pulse with nanosecond rise time in vacuum[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2011, 18(2): 561-569.
[11] Takahiro Imai, Fumio Sawa, Toshiyuki Nakano, et al. Effects of Nano- and micro-filler mixture on electrical insulation properties of epoxy based composites[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2006, 13(1): 319-326. |
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2011, Vol. 26 
