nanocomposite; carbon nanotube; electromagnetic interferences (EMI) shielding material
Abstract :
[en] In this paper, we present a new shielding and absorbing composite based on carbon nanotubes (CNTs) dispersed inside a polymer dielectric material. The extremely high aspect ratio of CNTs and their remarkable conductive properties lead to good absorbing properties with very low concentrations. A broadband characterization technique is used to measure the microwave electrical properties of CNT composites. It is shown that a conduction level of 1 S/m is reached for only 0.35 weight % of a CNT, while, for a classical absorbing composite based on carbon black, 20% concentration is mandatory. The conductive properties are explained by a phenomenological electrical model and successfully correlated with rheological data aiming at monitoring the dispersion of conductive inclusions in polymer matrices.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry Materials science & engineering
Author, co-author :
Saib, Aimad; Université catholique de Louvain (UCL), Microwave Laboratory
Bednarz, Lukasz; Université catholique de Louvain (UCL), Microwave Laboratory
Daussin, Raphaël; Université catholique de Louvain (UCL), Polymer Science Laboratory
Bailly, Christian; Université catholique de Louvain (UCL), Polymer Science Laboratory
Lou, Xudong; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Thomassin, Jean-Michel ; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Pagnoulle, Christophe; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Detrembleur, Christophe ; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Huynen, Isabelle; Université catholique de Louvain (UCL), Microwave Laboratory
Language :
English
Title :
Carbon nanotube composites for broadband microwave absorbing materials
Publication date :
2006
Journal title :
IEEE Transactions on Microwave Theory and Techniques
ISSN :
0018-9480
eISSN :
1557-9670
Publisher :
IEEE, Piscataway, United States - New Jersey
Volume :
54
Issue :
6
Pages :
2745-2754
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
The Walloon Region through the "ENABLE" program F.R.S.-FNRS - Fonds de la Recherche Scientifique
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