Microwave Absorbing Nanocomposites Composed with and without Polyaniline by Use as Radar Absorbing Structure

Luiza de Castro Folgueras; Mirabel Cerqueira Rezende

doi:10.4028/www.scientific.net/MSF.730-732.920

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HomeMaterials Science ForumMaterials Science Forum Vols. 730-732Microwave Absorbing Nanocomposites Composed with...

Microwave Absorbing Nanocomposites Composed with and without Polyaniline by Use as Radar Absorbing Structure

Abstract:

In the past decade, new materials have been developed based on the physical and chemical properties of carbon nanotubes. The combination of polyaniline with multiwall carbon nanotubes results in a new functional material with advantageous electromagnetic properties. The objective of this study was to produce a radar absorbing structure consisting of glass fiber woven fabric impregnated with a formulation containing carbon nanotubes, polyurethane resin, with or without polyaniline. A different formulation was used for each woven sheet (multilayer structure). The electromagnetic properties of these nanocomposite materials were characterized by reflectivity measurements using Naval Research Laboratory arch method (frequency range, 8 to 12 GHz). The attenuation of both sides of each nanocomposite material was also measured and compared. The attenuation of electromagnetic energy was as high as 70 %, approximately, indicating that these materials can be used as microwave absorbers.

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Periodical:

Materials Science Forum (Volumes 730-732)

Pages:

920-924

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.730-732.920

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Online since:

November 2012

Authors:

Luiza de Castro Folgueras, Mirabel Cerqueira Rezende

Keywords:

Microwave Absorber, Nanocomposite, Radar Absorber Structure, Radar Absorbing Material (RAM)

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