Magnetic Ti3C2Tx/Fe3O4/Aramid nanofibers composite paper with tunable electromagnetic interference shielding performance

Increasingly popularity of electronic devices and wireless apparatus requires advanced materials to cope with severe electromagnetic wave pollution. Herein, magnetic EM wave shielding material, Ti3C2Tx/Fe3O4/aramid nanofibers composite paper, composed of low-dimensional Ti3C2Tx flakes and carboxylation Fe3O4 nanoparticles, was developed via vacuum-assisted filtration. At the meanwhile, uniform dispersion of components was achieved to overcome magnetic through ingenious electrostatic force regulation originated from negative functional groups. The Ti3C2Tx/Fe3O4/aramid nanofibers composite paper exhibited suitable magnetic performance, outstanding electrical conductivity, and excellent electromagnetic interference shielding performance. Moreover, the Ti3C2Tx/Fe3O4/aramid nanofibers composite paper demonstrated favorable mechanical properties, whose tensile strength and Young’s modulus reached 132.2 ± 2.1 MPa and 5.23 ± 0.14 GPa, respectively. The combination of electromagnetic shielding capacity (derived from Ti3C2Tx flakes, carboxylation Fe3O4 nanoparticles) and mechanical properties (derived from aramid nanofibers) provided feasible strategy in fabricating advanced EMI shielding composite with astonishing comprehensive performance.