Changes in Chemical Structure and Mechanical Properties Induced in Cross-linked Polyethylene by Thermal and Radiation Aging

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

Abstract

The degradation behavior of cross-linked polyethylene (XLPE) exposed to heat and radiation was investigated, focusing on its changes in chemical structure and mechanical properties. Infrared absorption spectroscopy (FT-IR), differential scanning calorimetry (DSC), and tensile tests were conducted. At the aging condition becomes more severe, the absorption due to carbonyl groups increases. In accord with this, the elongation at break decreases exponentially, while the enthalpy of fusion due to the melting of crystals decreases. When XLPE is exposed to heat and radiation, it is oxidized, which lowers the crystallinity and makes the crystals smaller. As a result, the mechanical properties of XLPE become degraded.

Original languageEnglish
Title of host publicationProceedings of the 2020 IEEE 3rd International Conference on Dielectrics, ICD 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages45-48
Number of pages4
ISBN (Electronic)9781728189833
DOIs
Publication statusPublished - 2020 Jul 5
Event3rd IEEE International Conference on Dielectrics, ICD 2020 - Virtual, Valencia, Spain
Duration: 2020 Jul 52020 Jul 9

Publication series

NameProceedings of the 2020 IEEE 3rd International Conference on Dielectrics, ICD 2020

Conference

Conference3rd IEEE International Conference on Dielectrics, ICD 2020
CountrySpain
CityVirtual, Valencia
Period20/7/520/7/9

ASJC Scopus subject areas

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

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