Architecturing Lightweight and Flexible Thermoplastic Elastomer Nanocomposites via 1D Nanomaterials for High‐Efficiency EMI Shielding

Nanocomposites made from conductive thermoplastic elastomers (TPEs) are becoming more and more crucial for modern electronics. When filled with conductive nanofillers, they provide electrical conductivity, mechanical reinforcement, and effective electromagnetic interference (EMI) shielding. The present work examines a conductive TPE‐based nanocomposite composed of EPDM and LDPE, augmented with a conducting nanofiller derived from one‐dimensional nanomaterials such as MWCNT. At a percolation threshold of 3 wt% MWCNT, the DC conductivity ranges from 10 −10 to 10 −2 S/cm. The nanocomposite showed the highest DC conductivity value of 10 −2 S/cm when it had 10 wt% MWCNT. This shows that conductivity goes up as the filler concentration rises. The thermal conductivity measurements showed a similar trend, with the nanocomposite having 10 wt% MWCNT showing the highest value of 0.3987 W/mK. The nanocomposites also showed an EMI Shielding Effectiveness (EMI SE) of approximately −22 dB in the X‐band (8.2–12.4 GHz) and Ku‐band (12.4–18 GHz) at 10 wt% MWCNT loading which essentially confirms that the synthesized nanocomposites can be used for EMI Shielding applications. The findings obtained in this study show that EPDM/LDPE/MWCNT nanocomposites are light, flexible, and cheap materials that can be used for effective EMI shielding applications.