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Effect of Micronscale and Nanoscale Boron Nitride Fillers on AC Breakdown Performances of Polytetrafluoroethylene

  • Bingchen Song
  • , Zhaozi Zhang
  • , Yongjie Nie
  • , Qinrong Li
  • , Pengxin Li
  • , Jiachi Yao
  • , Daomin Min
  • , Liangxian Zhang
  • , Shengtao Li
  • Xi'an Jiaotong University
  • Xi'an XD High Voltage Apparatus Co. Ltd.

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

During the breaking process of high voltage circuit breaker (HVCB), the arcs generated between the contacts may cause severe electrical breakdown of the nozzle, shortening the life of HVCB. Therefore, nozzles with superior performance are urgently needed. Our previous experiments prepared several polytetrafluoroethylene (PTFE) samples doped with different micron-scale and nanoscale boron nitride (BN) to study the influence of these fillers on the arc ablation resistance. The experiment results show that the addition of micron-BN can greatly improve the arc ablation resistance of PTFE. However, the influence of those fillers on the breakdown performances is still unclear. And the actual nozzle needs to have both excellent ablation and breakdown resistance. So PTFE filled with different size of micron-BN and nano-BN was prepared in this paper to study the effect of micron-scale or nanoscale BN on the AC breakdown performance of PTFE. The change of trap depth and trap density will influence the composites' charge transport properties. The AC breakdown experiment was done to test the samples' breakdown strength. The experiment results of different samples are compared to get the best particle size of the BN fillers. And the relationship between the breakdown performance and the trap parameters is discussed. These factors are considered to be closely related.

Original languageEnglish
Title of host publication7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728155111
DOIs
StatePublished - 6 Sep 2020
Event7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020 - Beijing, China
Duration: 6 Sep 202010 Sep 2020

Publication series

Name7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020 - Proceedings

Conference

Conference7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020
Country/TerritoryChina
CityBeijing
Period6/09/2010/09/20

Keywords

  • BN
  • PTFE
  • breakdown
  • size

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