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

Kim Ji Mun | Zendy; Lee Yeongbeom | Zendy; Jang Myung Geun | Zendy; Han Chonghun | Zendy; Kim Woo Nyon | Zendy

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

Author(s) -

Kim Ji Mun,

Lee Yeongbeom,

Jang Myung Geun,

Han Chonghun,

Kim Woo Nyon

Publication year - 2017

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.44373

Subject(s) - composite material , materials science , electrical conductor , filler (materials) , carbon nanotube , electromagnetic shielding , graphite , polyurethane , composite number , electrical resistivity and conductivity , carbon black , thermal conductivity , nanocomposite , natural rubber , electrical engineering , engineering

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. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44373.

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