Influence of composite electrical properties on the VHF-UHF electromagnetic shielding characteristics of polyethylene-carbon nanoparticle composites

Villacorta, Byron S., Hubing, Todd H. and Ogale, Amod A. (2013) Influence of composite electrical properties on the VHF-UHF electromagnetic shielding characteristics of polyethylene-carbon nanoparticle composites. Composites Science and Technology, 89 158-166. doi:10.1016/j.compscitech.2013.10.003


Author Villacorta, Byron S.
Hubing, Todd H.
Ogale, Amod A.
Title Influence of composite electrical properties on the VHF-UHF electromagnetic shielding characteristics of polyethylene-carbon nanoparticle composites
Journal name Composites Science and Technology   Check publisher's open access policy
ISSN 0266-3538
1879-1050
Publication date 2013-12-13
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.compscitech.2013.10.003
Open Access Status
Volume 89
Start page 158
End page 166
Total pages 9
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Abstract The influence of composite electrical properties on the plane-wave electromagnetic shielding effectiveness (EM SE) of carbon nanoparticle/polyethylene nanocomposites is reported in the VHF and UHF bands (30. MHz-1.5. GHz). Two highly graphitic carbon nanoparticles (heat-treated Pyrograf® III PR-19 carbon nanofibers and CheapTubes® multi-walled carbon nanotubes) were dispersed in a linear low density polyethylene (LLDPE) matrix to produce a nominally random in-plane particle orientation. For a concentration of 10. vol% nanoparticles and a sample thickness of 2.5. mm, EM SE values of 24. dB and 22. dB were obtained for MWNT HT and PR-19 HT nanocomposites, respectively. At a high concentration of 40. vol%, EM SE values as high as 68. dB and 55. dB were obtained for the PR-19 HT and MWNT HT nanocomposites, respectively. Because such nanocomposites possess only moderate electrical conductivity, the composite permittivity was also used to predict the plane wave EM SE and its components. Based on the material properties of the nanocomposites, the predicted values of EM SE were found to be consistent with the experimental values.
Keyword A. Carbon nanotubes
A. Nanoparticles
B. Electrical properties
C. Modeling
D. Rheology
D. Scanning electron microscopy (SEM)
E. Isostatic pressing
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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Created: Fri, 26 Jun 2015, 16:08:22 EST by Anthony Yeates on behalf of School of Chemical Engineering