Impact of Defect Functionalization and Thickness Variation on EMI Shielding Efficiency of Epoxy-MWCNT Nanocomposites

Abstract

Epoxy resin is loaded with Multi-Walled Carbon Nanotubes (MWCNT) to understand its impact on the Electromagnetic Interference (EMI) Shielding Efficiency (SE) in the X-band frequency range (8-12 GHz). The study is performed by varying weight percentages of Multi Walled Carbon Nanotubes (MWCNT) before and after defect functionalization process and also by varying the thickness of the composite. The EMI SE of epoxy-MWCNT nanocomposites, increases with increment in the wt% of pristine MWCNT nanofillers. No significant improvement in EMI SE of epoxy nanocomposites loaded with defect functionalized MWCNTs is noticed. Also, a substantial increment in EMI SE of epoxy-MWCNT nanocomposites, is noticed with increment in thickness up to 3mm.