Similarity in degradation behavior by heat and irradiation between ethylene-propylene-diene rubber and silicone rubber

Yoshimichi Ohki, Hiromichi Kotani, Daichi Fujishima, Naoshi Hirai

研究成果: Conference contribution

5 被引用数 (Scopus)

抄録

Flame retardant ethylene-propylene-diene rubber (FR-EPR) and silicone rubber (SiR) are two major materials for safety-related cables in nuclear power plants. For such cables, degradation of their insulation is a matter of serious concern. Regarding the above, sheets of FR-EPR and SiR were aged either thermally or concurrently by heat and gamma radiation and the resultant changes in various properties were systematically compared and analysed from various aspects by FT-IR, differential scanning calorimetry (DSC), thermogravimetry/differential thermal analysis (TG/DTA), and scanning probe microscopy (SPM), and by measuring indenter modulus, elongation at break (EAB), tensile strength (TS), and complex permittivity. As a result of the experiments, both FR-EPR and SiR become hard in a similar manner in both cases where the degradation was given by heat only or concurrently by heat and radiation. In both polymers, degradation induced cross-linking and breaking of chemical bonds were observed by FT-IR, DSC, TG/DTA. Furthermore, a contrastive difference in dielectric behavior between SiR and FR-EPR was also observed in complex permittivity.

本文言語English
ホスト出版物のタイトルCEIDP 2017 - IEEE Conference on Electrical Insulation and Dielectric Phenomenon
出版社Institute of Electrical and Electronics Engineers Inc.
ページ157-160
ページ数4
ISBN(電子版)9781538611944
DOI
出版ステータスPublished - 2018 1 12
イベント2017 IEEE Conference on Electrical Insulation and Dielectric Phenomenon, CEIDP 2017 - Texas, United States
継続期間: 2017 10 222017 10 25

出版物シリーズ

名前Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
2017-October
ISSN(印刷版)0084-9162

Other

Other2017 IEEE Conference on Electrical Insulation and Dielectric Phenomenon, CEIDP 2017
国/地域United States
CityTexas
Period17/10/2217/10/25

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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