Impact of the Impurities on the Conductivity of Low-Density Polyethylene

H. Hamedi, R. C. Walker, Jeffrey Long, R. Rajagopalan, E. Furman, M. Lanagan, W. H.Hunter Woodward

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

Abstract

In this study, the byproduct-driven conduction current in LDPE was investigated. We built an experimental fixture to measure bulk conductivity in LDPE soaked with byproducts. Ohmic conduction was observed below 10 kV/mm. At above 10 kV/mm, space charge limited current (SCLC) predicts observed conduction in LDPE soaked with byproducts. It is found that the addition of byproducts introduces charge traps with discrete energy levels which dominate conduction. Degassed samples, on the other hand, show slopes of greater than 2.5 in a current-voltage log-log plot which was attributed to the charge traps with continuous energy levels. By analyzing the thickness dependence of the current, we observed a transition from electrode- to bulk-limited current at above 20 kV/mm for acetophenone- and α-cumyl alcohol-soaked samples. The α-methylstyrene-soaked samples only show electrode-limited current.

Original languageEnglish (US)
Title of host publicationCEIDP 2020 - 2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages13-16
Number of pages4
ISBN (Electronic)9781728195728
DOIs
StatePublished - Oct 18 2020
Event2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2020 - Virtual, East Rutherford, United States
Duration: Oct 18 2020Oct 30 2020

Publication series

NameAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Volume2020-October
ISSN (Print)0084-9162

Conference

Conference2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2020
Country/TerritoryUnited States
CityVirtual, East Rutherford
Period10/18/2010/30/20

All Science Journal Classification (ASJC) codes

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

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