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    • MYNENI SUKESH BABU

      Articles written in Bulletin of Materials Science

    • Volume 45 All articles Published: 28 February 2022 Article ID 0044

      Electromagnetic shielding efficiency of carbon fibre fabric-sandwiched epoxy–MWCNT nanocomposites

      ABHISHEK SHARMA MYNENI SUKESH BABU ASAPU VINAYA KUMAR R SARATHI V SUBRAMANIAN

      More Details Abstract Fulltext PDF

      The impact of reinforcing multi-walled carbon nanotubes (MWCNT) and uni-directional carbon fibre fabric (UCFF) in the epoxy polymer matrix on the electromagnetic interference shielding efficiency (EMI SE) is studied in the X-band frequency range (8–12 GHz). The increase in the weight percentage (wt%) of pristine MWCNT increases the EMI SE of the nanocomposites. Inclusion of UCFF, as a layer, enhances the EMI SE of the structure to a great extent giving an EMI SE of around 75 dB at 12 GHz for UCFF-sandwiched 5 wt% MWCNT–epoxy composite. The layered structure, epoxy–MWCNT/UCFF/epoxy–MWCNT introduces heterogeneity and this results in a SE much higher than the individual contributions of MWCNT and UCFF. The analysis suggests that the presence of thin layer of UCFF absorbs the radiation apart from inducing multiple scattering enhancing the absorption within the MWCNT– epoxy region.

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