Electromagnetic interference shielding performance of carbon nanostructure reinforced, 3D printed polymer composites

Verma, P., Bansala, T., Chauhan, S. S., Kumar, D., Deveci, S. and Kumar, S. (2021) Electromagnetic interference shielding performance of carbon nanostructure reinforced, 3D printed polymer composites. Journal of Materials Science, 56, pp. 11769-11788. (doi: 10.1007/s10853-021-05985-0)

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Abstract

We report the electrical, mechanical and electromagnetic interference (EMI) shielding performance of polypropylene random copolymer (PPR)/multi-wall carbon nanotube (MWCNT) nanocomposites enabled via customized fused filament fabrication process. The electro-conductive PPR/MWCNT filament feedstocks were fabricated via shear-induced melt-blending process that allows 3D printing of nanoengineered composites even at higher MWCNT loading (up to 8 wt%). The uniform dispersion of MWCNTs in PPR matrix confirmed via Raman spectroscopy and scanning electron microscopy facilitates better mechanical, electrical and EMI shielding performance. The results furthermore show enhanced shielding properties and higher attenuation for the nanocomposites printed in 90° direction (~ − 37 dB for 8 wt% MWCNT loading). Effective interfacial adhesion between the beads with lesser extent of voids (confirmed via micro-computed tomography) endorsed low transmission loss in nanocomposites printed in 90° direction compared to samples printed in 0° direction. Surface architected structure (frustum shape) reveals higher specific shielding effectiveness (maximum ~ − 40 dBg−1cm3, + 38%) over the plain structure. The realization of excellent shielding effectiveness (~ 99.9% attenuation) of additive manufacturing-enabled PPR/MWCNT nanocomposites demonstrates their potential for lightweight and strong EMI shields.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kumar, Dr Shanmugam
Authors: Verma, P., Bansala, T., Chauhan, S. S., Kumar, D., Deveci, S., and Kumar, S.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Journal of Materials Science
Publisher:Springer
ISSN:0022-2461
ISSN (Online):1573-4803
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Journal of Materials Science 56:11769-11788
Publisher Policy:Reproduced under a Creative Commons licence

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