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An Experimental Investigation and Optimization of Electromagnetic Interference Shielding Effectiveness of Hybrid Epoxy Nanocomposites

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Abstract

An experimental study was conducted on the electromagnetic interference (EMI) shielding effectiveness (SE) of a hybrid composite fabricated by the hand lay-up method with neat epoxy and a combination of multi-walled carbon nanotubes (MWCNT), copper oxide (CuO), and bamboo charcoal (BC) as nanofillers. The main objective of this study was to improve the EMI SE at the higher frequency range of 8–12 GHz, with promising mechanical and thermal strength. The samples were fabricated and characterized for EMI shielding behavior. Further, response surface methodology (RSM) was carried out, and based on experimental results, it was found that the maximum EMI SE for sample A6 was 35.11 in a frequency range of 8–12 GHz, which is an admirable improvement in EMI SE with matrix alone. Also, it was noted that 5.0 wt.% CuO, 1.25 wt.% MWCNTs, and 5.5 wt.% BC were the optimal wt.% values for gaining the maximum EMI SE.

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Abbreviations

EMI:

Electromagnetic interference

SE:

Shielding effectiveness

RSM:

Response surface methodology

MWCNTs:

Multi-walled carbon nanotubes

CuO:

Copper oxide

BC:

Bamboo charcoal

ANOVA:

Analysis of variance

FESEM:

Field-emission scanning electron microscopy

dB:

Decibel

DOE:

Design of experiments

CCD:

Central composite design

SWCNTs:

Single-walled carbon nanotubes

GHz:

Gigahertz

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Authors and Affiliations

  1. School of Mechanical Engineering, Vellore Institute of Technology, Chennai, Tamil Nadu, 600127, India

    Subramanian Jeyanthi, Durgam Nivedhitha, G. Venkatachalam, Rohan Singh & Gaurav Sangwan

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  1. Subramanian Jeyanthi
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  2. Durgam Nivedhitha
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  3. G. Venkatachalam
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  5. Gaurav Sangwan
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Correspondence to Subramanian Jeyanthi.

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Jeyanthi, S., Nivedhitha, D., Venkatachalam, G. et al. An Experimental Investigation and Optimization of Electromagnetic Interference Shielding Effectiveness of Hybrid Epoxy Nanocomposites. J. Electron. Mater. 51, 3453–3465 (2022). https://doi.org/10.1007/s11664-022-09656-x

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  • DOI: https://doi.org/10.1007/s11664-022-09656-x

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