Electrical conductivity and EMI shielding effectiveness of polyurethane foam–conductive filler composites

Ji Mun Kim, Yeongbeom Lee, Myung Geun Jang, Chonghun Han, Woo Nyon Kim

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

The morphological, electrical, and thermal properties of polyurethane foam (PUF)/single conductive filler composites and PUF/hybrid conductive filler composites were investigated. For the PUF/single conductive filler composites, the PUF/nickel-coated carbon fiber (NCCF) composite showed higher electrical conductivity and electromagnetic interference shielding effectiveness (EMI SE) than did the PUF/multiwall carbon nanotube (MWCNT) and PUF/graphite composites; therefore, NCCF is the most effective filler among those tested in this study. For the PUF/hybrid conductive fillers PUF/NCCF (3.0 php)/MWCNT (3.0 php) composites, the values of electrical conductivity and EMI SE were determined to be 0.171 S/cm and 24.7 dB (decibel), respectively, which were the highest among the fillers investigated in this study. NCCF and MWCNT were the most effective primary and secondary fillers, and they had a synergistic effect on the electrical conductivity and EMI SE of the PUF/NCCF/MWCNT composites. From the results of thermal conductivity and cell size of the PUF/conductive filler composites, it is suggested that a reduction in cell size lowers the thermal conductivity of the PUF/conductive filler composites.

Original languageEnglish
Article number44373
JournalJournal of Applied Polymer Science
Volume134
Issue number5
DOIs
Publication statusPublished - 2017 Feb 5

Bibliographical note

Funding Information:
The author (M. G. Jang) was supported by the global Ph.D. fellowship through the Ministry of Education, South Korea. This research was supported by the Brain Korea 21 Plus Program in 2016 and Korea Ministry of Environment (MOE) as the Chemical Accident Prevention Technology Development Project (No. 2015001950003).

Publisher Copyright:
© 2016 Wiley Periodicals, Inc.

Keywords

  • foams
  • graphene and fullerenes
  • morphology
  • nanotubes
  • polyurethanes

ASJC Scopus subject areas

  • General Chemistry
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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