高电压技术2017，Vol.43Issue(9)：2842-2848,7.DOI:10.13336/j.1003-6520.hve.20170831010
纳米蒙脱土改性绝缘纸板的介电特性
Dielectric Properties of Nano-montmorillonite Modified Insulation Pressboard
摘要
Abstract
In order to study the influence of trap parameters on the dielectric characteristics of nano-montmorillonite (MMT) modification insulation pressboard,the manufacturing technology of MMT modified pressboard was developed by nano-doping method with laboratory devices.The characteristics of mechanical and dielectric properties were researched.The trap parameters were tested by thermally stimulated current (TSC) method,and the mechanism of nano-doping on characteristics of mechanical and dielectric property was analyzed.The measuring results show that the relative permittivity and tensile strength of modified pressboard are reducing at first and then rising with the increase of the content of nano-MMT.The conductivity of pressboard is increasing by nano-MMT doping,and the nonlinear inflection electric strength decreases gradually with the MMT filling rate growing.The breakdown strength of modified pressboard firstly increases and then decreases with the growth of nano-doping content.In addition,the dielectric property is analyzed by using the theory of energy band.The result shows that the increase of trap destiny results in the decrease of nonlinear conductivity.Besides,the breakdown strength increases with the increase of trap depth.Thus,it can be concluded that trap parameters have a remarkable effect on the dielectric characteristics of nano modified pressboard.关键词
换流变压器/油纸绝缘/介电特性/纳米改性/蒙脱土Key words
converter transformer/oil-paper insulation/dielectric characteristics/nano-modification/montmorillonite引用本文复制引用
池明赫,陶可鹏,陈庆国,刘贺千,高鹏,高自伟..纳米蒙脱土改性绝缘纸板的介电特性[J].高电压技术,2017,43(9):2842-2848,7.基金项目
国家自然科学基金(51407051 （）
51677046) （）
黑龙江省普通本科高等学校青年创新人才培养计划(编号略).Project supported by National Natural Science Foundation of China(51407051,51677046),University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province. （编号略）
