Thin, Lightweight and High EMI Shielding Efficiency CNF/Epoxy nanocomposite for Civil and Military Application

In this novel work the EMI shielding properties of low density, low cost and less explored carbon nano fiber (CNF) nanofiller embedded in the epoxy matrix is investigated for its potential use in electromagnetic interference (EMI) shielding of sensitive electronic equipment's applied in industrial, military applications and also in protection of human health. The CNF nanocomposite with filler concentrations 1, 5, 10 and 15 wt.% epoxy are synthesized via ultrasonication method. The EMI shielding efficiency of all the nanocomposites prepared are investigated in the X-band using VNA and the result shows that nanocomposite with CNF as 15 wt. % of epoxy achieved maximum EMI shielding efficiency of 35.53 dB in X-band at 2 mm thickness. Hence this lightweight CNF based nanocomposite can be potentially applied in many application such as military, industrial and civil application, where high shielding efficiency is required.