中国电机工程学报2016，Vol.36Issue(24)：6647-6653,7.DOI:10.13334/j.0258-8013.pcsee.161830
硅橡胶/SiC复合材料非线性电阻及电荷输运特性
Nonlinear Resistivity and Charge Transport Characteristics of SiR/SiC Composites
摘要
Abstract
In order to research the effect of nonlinear resistivity on space charge and surface charge properties of SiR/SiC composites, the nonlinear resistivity, space charge and surface charge potential of SiR/SiC composites with different SiC particle content under different voltage were measured. The change of nonlinear resistivity under different voltage and the influences of nonlinear resistivity on charge accumulation and dissipation were analyzed. The results indicate that the resistivity of SiR/SiC composites does not present obvious nonlinearity when the SiC content is lower than 10 %. The resistivity experiences a nonlinear change with the increasing electric field when the SiC content exceeds 30 % and the threshold field of nonlinear resistivity declines when the SiC content rises. In the space charge polarization process, low resistivity suppresses the accumulation of space charge in SiR/SiC composites while in depolarization process, low resistivity accelerates the dissipation of space charge. The acceleration effect is also found in surface charge dissipation of SiR/SiC composites. Generally, this paper looked into the change of nonlinear resistivity and charge property of SiR/SiC composites, providing references for the application of nonlinear resistivity materials in DC cable accessories.关键词
直流电缆附件/硅橡胶/碳化硅颗粒/非线性电阻率/空间电荷/表面电位衰减Key words
HVDC cable accessories/silicone rubber/SiC particles/nonlinear resistivity/space charge/surface potential decay分类
信息技术与安全科学引用本文复制引用
杨卓然,李忠磊,李进,杜伯学..硅橡胶/SiC复合材料非线性电阻及电荷输运特性[J].中国电机工程学报,2016,36(24):6647-6653,7.基金项目
国家自然科学基金(51277131，51537008)；国家重点基础研究发展计划项目(973项目)(2014CB239501)。 The National Natural Science Foundation of China(51277131,51537008) （51277131，51537008）
The National Basic Research Program of China (973 Program)(2014CB239506) （973 Program）
