Three‐Dimensional Network Structured CF ‐ CNTs / PDMS ‐ MXene Flexible Composites With Thermal Property and Electromagnetic Shielding Performance

ABSTRACT Developing lightweight and multifunctional materials for electromagnetic interference (EMI) shielding is essential to alleviate the harmful consequences of electromagnetic interference and radiation pollution for human health and electronic systems. In this work, the three‐dimensional network structured CF‐CNTs/PDMS‐MXene CNTs was fabricated by growing one‐dimensional tubular structured carbon nanotubes (CNTs) on carbon fabrics (CF) surface with the floating catalytic chemical vapor deposition method and adding two‐dimensional sheet‐like structured MXene into Polydimethylsiloxane (PDMS). The experimental results indicated that the electrical conductivity of CF was improved from 661.37 to 3315.25 S/m before and after the growth of CNTs, which means CF‐CNTs exhibit good electrical conductivity. CF‐CNTs/PDMS‐MXene has the fastest heating and cooling rate, indicating that CNTs and MXene can effectively improve the heat conduction of composites. The EMI SE _T value of CF‐CNTs/PDMS‐MXene composites reaches a maximum of 39.34 dB, demonstrating good electromagnetic shielding performance. This study provides a new idea and approach for the development of high‐performance electromagnetic shielding materials with broad application prospects.