Studies on electromagnetic interference shielding characteristics of metal nanoparticle- and carbon nanostructure-filled polymer composites in the Ku-band frequency

Author

Yang, Y. ; Gupta, M.C. ; Dudley, K.L.

Author_Institution

Charles L. Brown Dept. of Electr. & Comput. Eng., Univ. of Virginia, Charlottesville, VA

Volume

2

Issue

4

fYear

2007

fDate

12/1/2007 12:00:00 AM

Firstpage

85

Lastpage

89

Abstract

The dispersion behaviour and electromagnetic interference (EMI) shielding properties were investigated for metal nanoparticle- and carbon nanostructure-filled polymer composites. It was observed that carbon nanostructure-polymer composites exhibited a much higher shielding performance than Ag nanoparticle-polymer composites at the same filler loading. The results also showed that Ag nanoparticle-polymer composites could exhibit an ideal shielding performance only with a very high Ag loading (> 30 wt%). The experimental data exhibited that the shielding effectiveness of the polymer composite containing 5 wt% carbon nanotubes could reach more than 20 dB in the measured frequency region, indicating such composites can be applied to the practical EMI shielding materials. In addition, some possible approaches to further improve the shielding performance of carbon nanotube-polymer composites were proposed and discussed.

Keywords

carbon fibres; carbon nanotubes; electromagnetic interference; electromagnetic shielding; filled polymers; microwave materials; nanocomposites; nanoparticles; silver; Ag; EMI shielding materials; Ku-band frequency; carbon nanofibres; carbon nanostructure-filled polymer composite; carbon nanotubes; dispersion property; electromagnetic interference shielding; frequency 12.4 GHz to 18 GHz; metal nanoparticle-filled polymer composite; microstructural property;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl:20070042

Filename

4436214