高电压技术2017，Vol.43Issue(11)：3521-3527,7.DOI:10.13336/j.1003-6520.hve.20171031005
纳米碳化硅/液体硅橡胶复合材料非线性电导特性
Non-linear Conductivity Characteristic of SiC/LSR Nanocomposite
摘要
Abstract
To solve the problem of non-uniform electric field distribution in high Voltage direct current (HVDC) cable accessory,which was caused by the difference of conductivity of the composite insulation materials,nano silicon carbide (SiC) was added to the liquid silicone rubber (LSR) to prepare the nanocomposites with non-linear conductivity characteristics.The conductivity and dielectric properties of pure LSR and SiC/LSR nanocomposites with mass fraction of 1％,3％ and 5％ were tested and studied.The results show that the conductivity of SiC/LSR nanocomposites increases from 10-15 S/m to 10-14 S/m～10-13 S/m,nonlinear coefficient increases from 0.3 to 1.03,the relative dielectric constant increases by 0.46,and the dielectric loss factor hardly changes compared to those of the pure LSR.In order to verify the effect of electric field homogenization of SiC/LSR nanocomposite within DC cable accessory,the simulation of electric field distribution in DC cable accessory is analyzed by Comsol-Multiphysics.The results show that non-linear SiC/LSR nanocomposites applied to cable accessory stress cone can make the maximum electric field concentration decreased by 80％ and realize the homogenization of electric field.关键词
碳化硅/液体硅橡胶/纳米复合材料/非线性/电导特性/直流电缆附件/电场仿真Key words
SiC/LSR/nanocomposite/non-linearity/conductivity characteristic/DC cable accessory/electric field simulation引用本文复制引用
陈庆国,尚南强,秦艳军,魏新喆,秦君..纳米碳化硅/液体硅橡胶复合材料非线性电导特性[J].高电压技术,2017,43(11):3521-3527,7.基金项目
国家自然科学基金(51407051) （51407051）
教育部高等学校博士学科点专项科研基金(20132303110006) （20132303110006）
黑龙江省自然科学基金(ZD201310).Project supported by National Natural Science Foundation of China (51407051),Specialized Research Fund for the Doctoral Program of Higher Education of Ministry of Education of China (20132303110006),Natural Science Foundation of Heilongjiang Province(ZD201310). （ZD201310）
