Electromagnetic interference shielding properties of butyl rubber-single walled carbon nanotube composites

Butyl rubber (BR)-single walled carbon nanotube (SWCNT) (BR-SWCNT) composites were prepared by solution mixing process to evaluate its electromagnetic interference (EMI) shielding efficiency in the X and Ku band (8.2–18GHz) frequency range for flexible electrostatic discharge shielding applications....

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Bibliographic Details
Published in:Composites science and technology 2014-09, Vol.101, p.139-144
Main Authors: Joseph, Nina, Janardhanan, Chameswary, Sebastian, Mailadil Thomas
Format: Article
Language:English
Subjects:
A. Carbon nanotubes
A. Flexible composites
A. Polymer-matrix composites
Applied sciences
B. Electrical properties
Carbon nanotubes
Composites
Electromagnetic interference
Electromagnetic interference shielding
Electrostatic discharges
EMI shielding
Exact sciences and technology
Forms of application and semi-finished materials
Frequency ranges
Noise levels
Polymer industry, paints, wood
Shielding
Single wall carbon nanotubes
Technology of polymers
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Summary:Butyl rubber (BR)-single walled carbon nanotube (SWCNT) (BR-SWCNT) composites were prepared by solution mixing process to evaluate its electromagnetic interference (EMI) shielding efficiency in the X and Ku band (8.2–18GHz) frequency range for flexible electrostatic discharge shielding applications. Shielding properties of BR improved with SWCNT addition and EMI shielding effectiveness of about 9–13dB was obtained for the composite with 8phr of SWCNT loading in the measured frequency range. The experimental results reveal that absorption was the dominating shielding mechanism. The dielectric properties, conductivity and skin depth of BR-SWCNT composite were found to increase with SWCNT loading and were observed to be significant factors influencing EMI shielding properties of the developed composite.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2014.07.002