Electrical conductivity and EMI shielding effectiveness of polyurethane foam-conductive filler composites
- Authors
- Kim, Ji Mun; Lee, Yeongbeom; Jang, Myung Geun; Han, Chonghun; Kim, Woo Nyon
- Issue Date
- 5-2월-2017
- Publisher
- WILEY
- Keywords
- foams; graphene and fullerenes; morphology; nanotubes; polyurethanes
- Citation
- JOURNAL OF APPLIED POLYMER SCIENCE, v.134, no.5
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF APPLIED POLYMER SCIENCE
- Volume
- 134
- Number
- 5
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/84467
- DOI
- 10.1002/APP.44373
- ISSN
- 0021-8995
- 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. (C) 2016 Wiley Periodicals, Inc.
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