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

doi:10.1002/app.44373

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

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

39 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 language	English
Article number	44373
Journal	Journal of Applied Polymer Science
Volume	134
Issue number	5
DOIs	https://doi.org/10.1002/app.44373
Publication status	Published - 2017 Feb 5

Keywords

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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10.1002/app.44373

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title = "Electrical conductivity and EMI shielding effectiveness of polyurethane foam–conductive filler composites",

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.",

keywords = "foams, graphene and fullerenes, morphology, nanotubes, polyurethanes",

author = "Kim, {Ji Mun} and Yeongbeom Lee and Jang, {Myung Geun} and Chonghun Han and Kim, {Woo Nyon}",

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: {\textcopyright} 2016 Wiley Periodicals, Inc.",

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AU - Kim, Ji Mun

AU - Lee, Yeongbeom

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AU - Han, Chonghun

AU - Kim, Woo Nyon

N1 - 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.

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N2 - 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.

AB - 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.

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

Abstract

Keywords

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