Carbon nanotube composites for broadband microwave absorbing materials

Author

Saib, A. ; Bednarz, L. ; Daussin, R. ; Bailly, C. ; Lou, X. ; Thomassin, J.M. ; Pagnoulle, C. ; Detrembleur, C. ; Jèrôme, R. ; Huynen, I.

Author_Institution

Microwave Lab., Univ. Catholique de Louvain, Louvain-la-Neuve, Belgium

Volume

1

fYear

2005

fDate

4-6 Oct. 2005

Abstract

In this paper, we present a shielding and absorbing composite based on carbon nanotubes (CNT) 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 percent of CNT, while for a classical absorbing composite based on carbon black 20 % concentration is mandatory.

Keywords

carbon nanotubes; composite materials; dielectric materials; electromagnetic shielding; electromagnetic wave absorption; microwave materials; polymers; absorbing properties; broadband characterization; broadband microwave absorbing materials; carbon nanotube composites; conductive properties; microwave electrical properties; polymer dielectric material; shielding composite; Carbon nanotubes; Composite materials; Conducting materials; Dielectric materials; Dielectric measurements; Electric variables measurement; Microwave measurements; Microwave theory and techniques; Organic materials; Polymers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2005 European

Print_ISBN

2-9600551-2-8

Type

conf

DOI

10.1109/EUMC.2005.1608849

Filename

1608849