氧化铝填充量对盆式绝缘子用环氧复合材料电气性能的影响
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摘要
Al_2O_3是特高压盆式绝缘子用环氧复合绝缘材料的关键无机填料,Al_2O_3的填充会对环氧复合绝缘材料电气性能产生显著影响。本文制备了盆式绝缘子用氧化铝/环氧复合绝缘材料,对环氧复合绝缘材料进行了电击穿试验,研究了电击穿强度随Al_2O_3填充量的变化特性,并进一步研究了添加偶联剂对固化样品的电击穿特性的影响。研究结果表明,随着Al_2O_3填充量的增加,环氧树脂复合材料的电击穿强度逐渐降低;通过添加偶联剂,能够有效的提升环氧复合绝缘材料的电击穿强度。
Alumina is a key inorganic filler for epoxy composite insulation materials for UHV pot insulators.The filling of alumina will have a significant effect on the electrical properties of epoxy composite insulation materials. In this paper, alumina/epoxy composite insulating materials for pot insulators were prepared, and electrical breakdown tests were conducted on epoxy composite insulating materials. The characteristics of the electric breakdown strength with the alumina filling amount were studied, and further studies were made on the addition of couples. The effect of the co-agent on the electrical breakdown characteristics of the cured sample.The results show that the electrical breakdown strength of epoxy resin composites decreases gradually with the increase of the alumina filling amount; by adding coupling agents, the electrical breakdown strength of epoxy composite insulation materials can be effectively improved.
Alumina is a key inorganic filler for epoxy composite insulation materials for UHV pot insulators.The filling of alumina will have a significant effect on the electrical properties of epoxy composite insulation materials. In this paper, alumina/epoxy composite insulating materials for pot insulators were prepared, and electrical breakdown tests were conducted on epoxy composite insulating materials. The characteristics of the electric breakdown strength with the alumina filling amount were studied, and further studies were made on the addition of couples. The effect of the co-agent on the electrical breakdown characteristics of the cured sample.The results show that the electrical breakdown strength of epoxy resin composites decreases gradually with the increase of the alumina filling amount; by adding coupling agents, the electrical breakdown strength of epoxy composite insulation materials can be effectively improved.
引文
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[2]崔博源,王宁华,王承玉,等.特高压气体绝缘金属封闭开关设备用盆式绝缘子的质量控制[J].高电压技术,2014,40(12):3888-3894.
[3]代文章,陈海东,王松波.GIS设备在电力系统中的应用及状态检修[J].电气技术,2013,(5):115-117.
[4]薛红涛,王伟伟,康雪晶.浅谈GIS设备后期扩建[J].高压电器,2012,48(5):115-120.
[5]Li Zhe,Okamoto Kenji,Ohki Yoshimichi,et al.The role of nano and micro particles on partial discharge and breakdown strength in epoxy composites[J].IEEE Dielectrics and Electrical Insulation Society,2011,18(3):675-681.
[6]Preetha P,Thomas M Joy.AC breakdown characteristics of epoxy nanocomposites[J].IEEE Dielectrics and Electrical Insulation Society,2011,18(5):1526-1534.
[7]王旗,李喆,尹毅.微、纳米无机颗粒/环氧树脂复合材料击穿强度性能[J].电工技术学报,2014,29(12):230-235.
[8]王旗,李喆,尹毅,吴建东.微/纳米氧化铝/环氧树脂复合材料抑制电树枝生长能力的研究[J].电工技术学报,2015,30(6):255-260.
[9]刘文斌.低温环境下环氧树脂绝缘材料的电气特性研究[D].华北电力大学(北京),2017.
[10]田浩,李继承,郝留成,等.直流电压下环氧绝缘材料电气性能对电荷积聚的影响[J].电网技术,2015,39(5):1463-1468.
[11]王蓓,张贵新,王强,等.SF_6及空气中绝缘子表面电荷的消散过程分析[J].高电压技术,2011,37(1):99-103.
[12]陈允,何少波,吴昱怡,等.微/纳米氧化铝填料对环氧树脂浇注体系性能的影响[J].绝缘材料,2016,49(9):47-52.
[13]张治民.环氧树脂纳米复合材料电学特性和力学特性[D].太原理工大学,2017.