Trap and carrier transport of pristine and aged silicone rubber by surface potential measurements

  • Wenbin Kang
  • , Chenyu Yan
  • , Shijun Li
  • , Yin Huang
  • , Daomin Min
  • , Shengtao Li

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

2 Scopus citations

Abstract

Silicone rubber is widely used in power equipment such as cable joint. In order to get better performance of insulator, it is significant to evaluate the insulation condition of aged silicone rubber insulators. Thus in this paper, surface potential decay measurement has been applied to investigate the performance of pristine and aged silicone rubber. Pristine and aged silicone rubber samples are charged by positive and negative corona discharging. Then the surface potentials are measured by a non-contact probe. It is found that surface potential in aged rubber decays faster, which is resulted from more shallow traps generated during ageing process, for electrons are easier to migrate or even trap out of the shallow traps. Additionally, carrier mobility shows an increase in aged rubber for both positive and negative charges, which may be resulted from the increase in shallow traps in the material. As regards to conductivity, it turns out that conductivity in aged rubber is higher than that in pristine one, which indicates charges in aged rubber migrate faster and further proves the conclusion mentioned that shallow traps increase in internal material.

Original languageEnglish
Title of host publicationProceedings of 2017 International Symposium on Electrical Insulating Materials, ISEIM 2017
PublisherInstitute of Electrical Engineers of Japan
Pages207-210
Number of pages4
ISBN (Electronic)9784886860996
DOIs
StatePublished - 27 Oct 2017
Event2017 International Symposium on Electrical Insulating Materials, ISEIM 2017 - Toyohashi, Japan
Duration: 11 Sep 201715 Sep 2017

Publication series

NameProceedings of the International Symposium on Electrical Insulating Materials
Volume1

Conference

Conference2017 International Symposium on Electrical Insulating Materials, ISEIM 2017
Country/TerritoryJapan
CityToyohashi
Period11/09/1715/09/17

Keywords

  • Ageing
  • Carrier transport
  • Silicone rubber
  • Surface potential decay
  • Trap density

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