Aging behavior of soft and hard epoxy resins in simulated nuclear-power-plant environments

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

Abstract

Two kinds of bis-phenol epoxy resins, a soft one (SE) and a hard one (HE), were aged thermally with and without simultaneous irradiation of gamma rays. For each resin, glass transition temperature (Tg), thermal decomposition temperature, elongation at break, tensile strength, and flexural modulus were measured. The difference in Tg between SE and HE is significant, which exerts certain influences on their degradation properties. When aged, SE becomes hard and it is crosslinked, regardless of whether the simultaneous irradiation was given or not. Finally, SE becomes brittle. In contrast, the mechanical properties of HE are scarcely affected by the two aging processes. However, HE finally becomes hard if aged thermally, while it is decomposed by the irradiation.

Original languageEnglish
Title of host publicationProceedings of 2020 International Symposium on Electrical Insulating Materials, ISEIM 2020
PublisherInstitute of Electrical Engineers of Japan
Pages587-590
Number of pages4
ISBN (Electronic)9784886864185
Publication statusPublished - 2020 Sep 13
Event2020 International Symposium on Electrical Insulating Materials, ISEIM 2020 - Virtual, Tokyo, Japan
Duration: 2020 Sep 132020 Sep 17

Publication series

NameProceedings of the International Symposium on Electrical Insulating Materials
Volume2020-September

Conference

Conference2020 International Symposium on Electrical Insulating Materials, ISEIM 2020
Country/TerritoryJapan
CityVirtual, Tokyo
Period20/9/1320/9/17

Keywords

  • Degradation
  • Epoxy resin
  • Glass transition temperature
  • Nuclear power plant
  • Thermal aging

ASJC Scopus subject areas

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

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