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Electromagnetic and microwave absorption properties of MWCNTs based polymer nanocomposites

Satish Geeri (Department of Mechanical Engineering, Pragati Engineering College, Surampalem, India)
Aditya Kolakoti (Department of Mechanical Engineering, Raghu Engineering College, Visakhapatnam, India)

World Journal of Engineering

ISSN: 1708-5284

Article publication date: 7 May 2021

Issue publication date: 24 November 2021

108

Abstract

Purpose

The purpose of the present work is to fabricate composite with strong absorbing nature and with more strength. The usage of wireless communication is increasing day by day, electromagnetic absorbing material is required to reduce this pollution. In the present experimental investigation, composites were fabricated for zero and 45° fiber orientation and as a filler material of Multiwall Carbon Nanotubes (MWCNTs) for the proposed percentage in the composites. Microwave absorbing properties were investigated for both perfect electric conductor (PEC)-backed composites and without PEC-backed composites.

Design/methodology/approach

The electromagnetic absorbing performance was analyzed based on complex permeability, complex permittivity, dielectric tangent and magnetic tangent losses. The experimentation was done by Vector Network Analyzer in the frequency range of 8.2 to 12.4 GHz by X-band. The surface morphological study was done. The mechanical and thermal properties are also investigated for these composites.

Findings

By investigating the experimental values, the induced percentage of MWCNTs and PEC of composites affects the electromagnetic and microwave absorption properties of the composites. The microwave absorption properties improved when the composites were able to absorb wide bandwidth and low reflection loss. The best results are obtained for PEC-backed composites for 5%, which is about −43.56 dB at 11.1 GHz compared to without PEC-backed composites. The reflection loss is developed by the dielectric loss initiated from MWCNTs and by PEC.

Originality/value

To the best of the authors’ knowledge, no work was reported on hand lay-up method and PEC-backed composites in electromagnetic absorption properties with regression analysis.

Keywords

Acknowledgements

Conflicts of interest: Authors declare no conflict of interest.

Citation

Geeri, S. and Kolakoti, A. (2021), "Electromagnetic and microwave absorption properties of MWCNTs based polymer nanocomposites", World Journal of Engineering, Vol. 18 No. 6, pp. 817-825. https://doi.org/10.1108/WJE-11-2020-0589

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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