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纳米填充浓度对LDPE/Silica纳米复合介质中空间电荷行为的影响

, PP. 177-183

Keywords: 绝缘材料,纳米复合介质,低密度聚乙烯,纳米氧化硅,空间电荷,高场电导

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Abstract:

为研究纳米颗粒填充浓度对复合介质内部空间电荷特性的影响,以低密度聚乙烯(low-densitypolyethylene,LDPE)为基料,纳米二氧化硅(Silica)为填充颗粒,制备了浓度在0%~5%范围的纳米LDPE/Silica复合介质,并测试了复合介质的准稳态直流电导和空间电荷分布。当LDPE内填充不同浓度的纳米silica后,复合介质内部的平均体空间电荷密度均得到有效抑制,且其平均衰减速度随填充浓度的升高而下降,但复合介质的准稳态直流电导在填充浓度低于0.5%时比纯LDPE时要大,当填充浓度高于0.5%时,准稳态直流电导随着填充浓度的升高而快速下降。结果表明试样内部的空间电荷分布存在3种趋势:当纳米silica填充浓度为0%~0.1%时,试样内表面侧的异极性空间电荷量随填充浓度升高而下降;当填充浓度为0.5%~2%时,试样内表面侧积累同极性电荷,并随填充浓度升高而增大;当填充浓度高于2%时,同极性空间电荷量下降。最低空间电荷密度和准稳态直流高场电导对应的纳米填充浓度分别为0.5%和5%,表明在应用纳米颗粒对聚合物的绝缘性能改良时,为获得最佳的介电性能,应根据实际需求来选择适当的填充浓度。

References

[1]  Tanaka T,Okamoto T,Hozumi N,et al. Interfacial improvement of XLPE cable insulation at reduced thickness[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1996,3(3):345-350.
[2]  Zhang Yewen,Lewiner J,Alquie C,et al. Evidence of strong correlation between space-charge buildup and breakdown in cable insulation[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1996,3(6):778-783.
[3]  Li Ying,Takada T. Experimental observation of charge transport and injection in XLPE at polarity reversal [J]. Journal of Physics D: Applied Physics, 1992,25(4):704.
[4]  Hayase Y,Aoyama H,Matsui K,et al. Space charge formation in LDPE/MgO nano-composite film under ultra-high DC electric stress[J]. IEEE Transactions on Fundamentals and Materials, 2006,126(11):1084-1089.
[5]  Chen G,Tay T Y G,Davies A E,et al. Electrodes and charge injection in low-density polyethylene using the pulsed electroacoustic technique[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2001,8(6):867-873.
[6]  Cao Y,Irwin P C,Younsi K. The future of nanodielectrics in the electrical power industry[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2004,11(5):797-807.
[7]  Tanaka T. Dielectric nanocomposites with insulating properties[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2005,12(5):914-928.
[8]  Nelson J K. Overview of nanodielectrics: Insulating materials of the future[C]//Electrical Insulation Conference and Electrical Manufacturing Expo. Nashville, TN:IEEE,2007:229-235.
[9]  Fleming R J,Ammala A,Lang S B,et al. Conductivity and space charge in LDPE containing nano-and micro-sized ZnO particles[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2008,15(1):118-126.
[10]  Fukunaga K,Maeno T,Hashimuto Y,et al. Space charge formation at the interface between a charge transport layer and a polyester film[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 1998,5(2):276-280.
[11]  刘文辉,吴建东,王俏华,等. 纳米添加物的粒径对聚合物纳米复合电介质中空间电荷行为的影响[J]. 中国电机工程学报, 2009,29(S1):61-66. Liu Wenhui,Wu Jiandong,Wang Qiaohua,et al. Effect of nano additive size on the space charge behaviour in nanocomposite polymer material[J].Proceedings of the CSEE,2009,29(S1)
[12]  尹毅,陈炯,李喆,等. 纳米SiOx/聚乙烯复合材料强场电导特性的研究[J]. 电工技术学报, 2006,21(2):22-26. Yin Yi,Chen Jiong,Li Zhe,et al.High field conduction of the composites of low-density polyethylene/nano- SiOx[J].Transactions of China Electrotechnical Society,2006,21(2)
[13]  陈炯,尹毅,李喆,等. 纳米SiOx/聚乙烯复合介质强场电导的预电应力效应研究[J]. 中国电机工程学报, 2006,26(7):146-151. Chen Jiong,Yin Yi,Li Zhe,et al.The effect of electrically pre-stressing of high field conduction in the nanocomposite of polyethylene and nano-SiOx [J].Proceedings of the CSEE,2006,26(7): 146-151(in Chinese)
[14]  Tanaka T,Kozako M,Fuse N,et al. Proposal of a multi-core model for polymer nanocomposite dielectrics [J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2005,12(4):669-681.
[15]  Takada Y,Hayase Y,Tanaka Y. Space charge trapping in electrical potential well caused by permanent and induced dipoles for LDPE/MgO nanocomposite[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2008,15(1):152-160.
[16]  Montanari G C,Fabiani D. Evaluation of dc insulation performance based on space-charge measurements and accelerated life tests[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2000,7(3):322-328.
[17]  Mazzanti G,Montanari G C,Palmieri F. Quantities extracted from space-charge measurements as markers for insulation aging[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2003,10(2):198-203.
[18]  Montanari G C,Fabiani D,Dissado L A. A new conduction phenomenon observed in polyethylene and epoxy resin: Ultra-fast soliton conduction[J]. Journal of Polymer Science Part B:Polymer Physics, 2011,49(16):1173-1182.
[19]  Fabiani D,Montanari G,Dissado L,et al. Fast and slow charge packets in polymeric materials under DC stress [J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2009,16(1):241-250.
[20]  Roy M,Nelson J K,MacCrone R K,et al. Polymer nanocomposite dielectrics-the role of the interface [J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2005,12(4):629-643.

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