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

39 Citations (Scopus)


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
Issue number5
Publication statusPublished - 2017 Feb 5


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

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry


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