Aging Behavior of Flame-retardant Cross-linked Polyolefin under Thermal and Radiation Stresses

Haolong Zhou, Wakana Hanafusa, Keigo Udo, Naoshi Hirai, Yoshimichi Ohki

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, flame-retardant cross-linked polyolefin, which is an important polymeric insulation material for electric power cables, is aged under severe thermal and radiation stresses. After aging, the samples are analyzed mechanically, thermally, and electrically. The degradation of this polymer is found to become very severe when it is aged thermally than when aged by a combination of heat and gamma irradiation. The formation of densely cross-linked structures, induced by the gamma irradiation, appears to make the polymer harder and more resistant against oxidation and against its resultant scission of chemical bonds.

Original languageEnglish
Article number9351878
Pages (from-to)303-309
Number of pages7
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Volume28
Issue number1
DOIs
Publication statusPublished - 2021 Feb

Keywords

  • complex permittivity
  • gamma ray
  • indenter modulus
  • irradiation
  • tensile test

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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