Improvement of the electrical treeing resistance of polymers through the self-arrangement effect of the voltage stabilizer caused by dielectrophoresis under non-uniform electric field

作者：Xiaoqian Zhu, Yuhang Li, Yuanxiang Zhou, Yunxiao Zhang, X.Y. Liu, Ming Chen · 发表于：Applied Physics Letters · 年份：2023 · DOI：10.1063/5.0166658 · 被引用次数：13 · 研究领域：High voltage insulation and dielectric phenomena、Dielectric materials and actuators、Power Transformer Diagnostics and Insulation

Improving the electrical treeing resistance of polymer is of great significance for insulation reliability. To achieve this, a solution-based method is employed to introduce a voltage stabilizer with high electron affinity into the silicone rubber (SiR). Experimental findings demonstrate the voltage stabilizer's ability to improve the tree initiation voltage and provide evidence of their migration within the SiR. Additionally, by combining a finite element method, it has been confirmed that voltage stabilizers can migrate through dielectrophoresis in non-uniform electric fields and adaptively reposition themselves in response to changes in electric field distribution during the growth of the electrical tree.