Analysis on thermally stimulated currents in polyethylene-terephthalate and polyethylene-naphthalate

Peng Yang, Yoshimichi Ohki, Fuqiang Tian

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

3 Citations (Scopus)

Abstract

Through analysis of thermally stimulated polarization and depolarization currents (TSPC and TSDC), dielectric properties of polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) are compared. Since the two polymers have very similar chemical structures, their dielectric properties are also similar. However, the temperature at which TSPC or TSDC starts to increase rapidly is about 20 °C higher in PEN than in PET. This difference is mostly due to the fact that the glass transition temperature Tg is higher in PEN. This means that thermal properties including the glass transition affect significantly the dielectric behavior of PET and PEN. At temperatures about 30 °C lower than Tg, the two polymers show a hump in their first-run TSPC spectra, probably originating from impurity or moisture. It is also clearly demonstrated that both PET and PEN can be reliable electrical insulating materials, especially at temperatures below their Tg's.

Original languageEnglish
Title of host publicationProceedings of 2014 International Symposium on Electrical Insulating Materials, ISEIM 2014
PublisherInstitute of Electrical Engineers of Japan
Pages401-404
Number of pages4
ISBN (Print)9784886860866
DOIs
Publication statusPublished - 2014 Jan 1
Event2014 International Symposium on Electrical Insulating Materials, ISEIM 2014 - Niigata, Japan
Duration: 2014 Jun 12014 Jun 5

Publication series

NameProceedings of the International Symposium on Electrical Insulating Materials

Other

Other2014 International Symposium on Electrical Insulating Materials, ISEIM 2014
CountryJapan
CityNiigata
Period14/6/114/6/5

Keywords

  • PEN
  • PET
  • dielectric property
  • thermally stimulated current (TSC)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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  • Cite this

    Yang, P., Ohki, Y., & Tian, F. (2014). Analysis on thermally stimulated currents in polyethylene-terephthalate and polyethylene-naphthalate. In Proceedings of 2014 International Symposium on Electrical Insulating Materials, ISEIM 2014 (pp. 401-404). [6870804] (Proceedings of the International Symposium on Electrical Insulating Materials). Institute of Electrical Engineers of Japan. https://doi.org/10.1109/ISEIM.2014.6870804