Degradation behavior and mechanisms of several polymeric insulating materials exposed to heat and radiation

Liuqing Yang, Yoshimichi Ohki, Naoshi Hirai, Shengtao Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Sheet-shaped poly(ether-ether-ketone) (PEEK), silicone rubber (SiR), flame-retardant (FR) ethylene-propylene-diene monomer rubber (EPDM), and FR crosslinked polyethylene (FR-XLPE) were aged thermally at various temperatures with or without concurrent irradiation of gamma rays. The degradation mechanism was examined extensively by instrumental analyses, while those in mechanical and dielectric properties were evaluated by measuring indenter modulus, elongation at break, tensile strength, electrical conductivity, and complex permittivity. The behavior and its underlying mechanism of degradation induced by heat and radiation are quite different among these polymeric insulating materials. All the four materials exhibit deterioration in mechanical properties at a much earlier stage of aging than that in dielectric properties. Therefore, mechanical parameters are important indicators that should be considered in the condition monitoring.

Original languageEnglish
Title of host publication2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems, CATCON 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages98-103
Number of pages6
Volume2018-January
ISBN (Electronic)9781538631386
DOIs
Publication statusPublished - 2018 Feb 2
Event3rd International Conference on Condition Assessment Techniques in Electrical Systems, CATCON 2017 - Rupnagar, Punjab, India
Duration: 2017 Nov 162017 Nov 18

Other

Other3rd International Conference on Condition Assessment Techniques in Electrical Systems, CATCON 2017
CountryIndia
CityRupnagar, Punjab
Period17/11/1617/11/18

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Keywords

  • EPDM
  • Flame-retardant
  • Monitoring condition
  • PEEK
  • SiR
  • XLPE

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality

Cite this

Yang, L., Ohki, Y., Hirai, N., & Li, S. (2018). Degradation behavior and mechanisms of several polymeric insulating materials exposed to heat and radiation. In 2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems, CATCON 2017 - Proceedings (Vol. 2018-January, pp. 98-103). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CATCON.2017.8280192