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Park, Hyung Wook
Multiscale Hybrid Manufacturing Lab.
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Electromagnetic interference shielding of composites consisting of a polyester matrix and carbon nanotube-coated fiber reinforcement

Author(s)
Gnidakouong, Joel Renaud NgouanomKim, MyungsooPark, Hyung WookPark, Young-BinJeong, Ho SoonJung, Young BokAhn, Sung KyuHan, KyungsikPark, Joung-Man
Issued Date
2013-07
DOI
10.1016/j.compositesa.2013.03.007
URI
https://scholarworks.unist.ac.kr/handle/201301/3267
Fulltext
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84876741926
Citation
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, v.50, pp.73 - 80
Abstract
We investigated the electromagnetic interference shielding effectiveness (EMI SE) of composites consisting of an unsaturated polyester matrix containing woven glass or carbon fibers that had been coated with multiwalled carbon nanotubes (MWCNTs). Composite panels consisting of fiber fabrics with various combinations of fabric type and stacking sequence were fabricated. Their EMI SE was measured in the frequency range of 30 MHz-1.5 GHz. The underlying physics governing the EMI shielding mechanisms of the materials, namely, absorption, reflection, and multiple reflections, was investigated and used in analytical models to predict the EMI SE. Simulation and experimental results showed that the contributions of reflection and absorption to EMI shielding is enhanced by sufficient impedance mismatching, while multiple reflections have a negative effect. For a given amount of MWCNTs in the glass-fiber-reinforced composite, coating the outermost, instead of intermediate, glass fiber plies with MWCNTs was found to maximize the conductivity and SE.
Publisher
ELSEVIER SCI LTD
ISSN
1359-835X
Keyword (Author)
HybridNano-structuresPolymer-matrix composites (PMCs)Electrical properties
Keyword
GRAPHITE

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