纳米AlN改性对干式变压器环氧树脂绝缘性能的影响

发布时间：2018-05-08 14:53

  本文选题：纳米AlN + 环氧树脂　； 参考：《电工技术学报》2017年07期

【摘要】：聚合物纳米复合材料因其优良的电气绝缘性能在电介质绝缘领域得到了广泛应用。为了获得性能优良的环氧树脂绝缘材料,将采用硅烷偶联剂进行表面处理后的纳米Al N颗粒加入环氧树脂绝缘材料中,采用溶液共混法制备了Al N质量分数分别为0%、0.5%、1%、3%、5%、7%的Al N/环氧树脂复合材料,研究了不同Al N质量分数对Al N/环氧树脂复合材料绝缘性能的影响。结果表明,树脂基体和Al N填料之间实现了有效的结合,提高了环氧树脂的热稳定性;Al N的加入一定程度上减小了复合材料的体积电阻率,并且增大了复合材料的介质损耗因数,但对复合材料电气绝缘性能的影响较小;当纳米Al N颗粒质量分数为3%时,Al N/环氧树脂复合材料的交流击穿电场强度最大。因此,添加适量纳米Al N颗粒能够提高干式变压器环氧树脂的电气绝缘性能。
[Abstract]:Polymer nanocomposites have been widely used in dielectric insulation due to their excellent electrical insulation properties. In order to obtain epoxy resin insulation material with excellent properties, nano-Al N particles after surface treatment with silane coupling agent were added to epoxy resin insulation material. The Al N / epoxy resin composites with a mass fraction of 0 0. 5% Al N and 5% Al N / epoxy resin were prepared by solution blending method. The effects of different Al N mass fraction on the insulation properties of Al N / epoxy resin composites were studied. The results show that the effective bonding between resin matrix and Al N filler can be realized, and the thermal stability of epoxy resin and the addition of Al N can decrease the volume resistivity of the composite to a certain extent. The dielectric loss factor of the composite is increased, but the influence on the electrical insulation of the composite is small, and when the mass fraction of nano-Al N particles is 3, the AC breakdown electric field strength of the composite is the largest. Therefore, the electrical insulation properties of epoxy resin of dry transformer can be improved by adding proper amount of nano Al N particles.
【作者单位】： 输配电装备及系统安全与新技术国家重点实验室(重庆大学);广州供电局电力试验研究院;
【基金】：国家创新研究群体基金(51321063) 广州供电局科技项目(K-GZM2014-028)资助
【分类号】：TM215.1

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