Skip to main navigation Skip to search Skip to main content

Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy

  • Yoshimichi Ohki
  • , Naoshi Hirai
  • , Daomin Min
  • , Liuqing Yang
  • , Shengtao Li
  • Waseda University
  • Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Silicone rubber (SiR) was gamma irradiated at 125, 145 and 185 °C or thermally aged at 220, 250 and 280 °C and the resultant changes in performance were evaluated. It has become clear from instrumental analyses that crosslinking via oxidation of silicon atoms and chain scission are induced by gamma rays. Furthermore, from the temperature dependence of real relative permittivity at high frequencies, the thermal expansion coefficient was found to become smaller with the increase in dose. These results can be understood well by the chemical and structural changes in SiR induced by the degradation.

Original languageEnglish
Title of host publicationProceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors
EditorsMichael Wright, Denise Paraventi, John H. Jackson
PublisherSpringer International Publishing
Pages107-116
Number of pages10
ISBN (Print)9783319684536
DOIs
StatePublished - 2018
Event18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, 2017 - Portland, United States
Duration: 13 Aug 201717 Aug 2017

Publication series

NameMinerals, Metals and Materials Series
VolumePart F11
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, 2017
Country/TerritoryUnited States
CityPortland
Period13/08/1717/08/17

Keywords

  • Aging
  • Complex permittivity
  • Degradation
  • Gamma rays
  • High temperature
  • SiR

Fingerprint

Dive into the research topics of 'Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy'. Together they form a unique fingerprint.

Cite this