Non-linear electrical conductivity of ethylene-propylene-diene monomer-based composite dielectrics by tuning inorganic fillers
作者机构：School of Electrical and Electronic EngineeringHarbin University of Science and TechnologyHarbinChina
出 版 物：《High Voltage》 (高电压（英文）)
年 卷 期：2023年第8卷第4期
页 面：781-790页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：National Natural Science Foundation of China,Grant/Award Numbers:U20A20308,51977050 Natural Science Foundation of Heilongjiang Province,Grant/Award Number:TD2019E002 Youth Innovative Talents Training Plan of Ordinary Undergraduate Colleges in Heilongjiang,Grant/Award Number:UNPYSCT-2020178
主 题：composite composites conductivity
摘 要：In this study,three kinds of inorganic fillers are chosen and filled into ethylene-propylenediene monomer(EPDM)matrix,including silicon carbide,copper calcium titanate(CCTO),and vanadium dioxide(VO2).The electrical properties of the three modified composites at different temperatures have been systematically *** intrinsic conductance behaviours of different inorganic fillers on the direct current conductance and electric breakdown strength of the composite dielectrics are also analysed,and the possible mechanism for non-linear conductivity is *** electrical conductivity increases with the increase of fillers content,where 30 wt.%CCTO/EPDM composite dielectric has a high non-linear coefficient of *** increase in temperature can further increase the conductivity of the composites,accompanying a lower breakdown *** the temperature rises to 70℃,the VO2/EPDM composite has a higher conductivity,but the electric breakdown strength degrades *** simulation results show that the composites with non-linear electrical conductivity characteristics can effectively uniform the electric field and solve the problem of electric field concentration at the root of the stress cone,which is beneficial to improving the safe operation of the cable accessories.
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