Degradation of Flame-retardant Cross-linked Polyolefin in Simulated Severe Environments

研究成果: Conference contribution

抄録

It is important to know how the degradation proceeds in a polymer used for electrical insulation in power apparatus, especially in severe environments. Sheets of flame-retardant crosslinked polyolefin (FR-XLPO) were aged thermally at 100, 135, and 155 °C with or without simultaneous irradiation of 60Co gamma rays. They were then analyzed experimentally. The samples aged purely thermally at 135 and 155 °C show more obvious changes in mechanical and dielectric properties than the other samples. While the elongation-at-break (EAB) first increases and then decreases drastically in a relatively early stage of aging, the indenter modulus (IM) shows almost no changes. After that, in a later stage of aging, EAB has no room to go down, whereas IM goes up to high values. It seems that the radiation-induced formation of cross-linked structures makes the polymer harder, which mitigates the progress of damages induced by the aging. Consequently, EAB can be a suitable indicator of the aging of FR-XLPO in a relatively early stage, while IM can be an indicator usable in a later stage.

本文言語English
ホスト出版物のタイトルCEIDP 2020 - 2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena
出版社Institute of Electrical and Electronics Engineers Inc.
ページ487-490
ページ数4
ISBN(電子版)9781728195728
DOI
出版ステータスPublished - 2020 10月 18
イベント2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2020 - Virtual, East Rutherford, United States
継続期間: 2020 10月 182020 10月 30

出版物シリーズ

名前Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
2020-October
ISSN(印刷版)0084-9162

Conference

Conference2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2020
国/地域United States
CityVirtual, East Rutherford
Period20/10/1820/10/30

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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