Journal
COMPOSITES PART B-ENGINEERING
Volume 69, Issue -, Pages 472-477Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2014.09.014
Keywords
Nano-structures; Polymer-matrix composites (PMCs); Mechanical properties; EMI shielding
Funding
- Defence Research and Development Organization (DRDO), Ministry of Defence, Government of India
- DIAT-DRDO program on Nanomaterials by ER-IPR, DRDO
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The advent of graphene heralded by the recent studies on carbon based conducting polymer composites has been a motivation for the use of graphene as an electromagnetic interference (EMI) shielding material. One of the variants of graphene, graphene nanoribbon (GNR) shows remarkably different properties from graphene. The EMI shielding effectiveness of the composite material mainly depends on fillers' intrinsic conductivity, dielectric constant and aspect ratio. We have synthesized graphene nanoribbon (GNR) - Polyaniline (PANI) - epoxy composite film for effective shielding material in the X-band frequency range of 8.2-12.4 (GHz). We have performed detailed studies of the EMI shielding effect and the performance of the composite and found that the composite shows similar to-40 dB shielding which is sufficient to shield more than 95% of the EM waves in X Band. We checked the shielding effectiveness of the composite film by varying the GNR percentage and the thickness of the film. The strength properties of the synthesized composited were also studied with a aim to have a material having both high strength and EMI shielding properties. (C) 2014 Elsevier Ltd. All rights reserved.
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