Magnetic Ti_3C_2T_x/Fe_3O_4/Aramid nanofibers composite paper with tunable electromagnetic interference shielding performance

摘要

Increasingly popularity of electronic devices and wireless apparatus requires advanced materials to cope with severe electromagnetic wave pollution. Herein, magnetic EM wave shielding material, Ti_3C_2T_x/Fe_3O_4/aramid nanofibers composite paper, composed of low-dimensional Ti_3C_2T_x flakes and carboxylation Fe_3O_4 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 Ti_3C_2T_x/Fe_3O_4/aramid nanofibers composite paper exhibited suitable magnetic performance, outstanding electrical conductivity, and excellent electromagnetic interference shielding performance. Moreover, the Ti_3C_2T_x/Fe_3O_4/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 Ti_3C_2T_x flakes, carboxylation Fe_3O_4 nanoparticles) and mechanical properties (derived from aramid nanofibers) provided feasible strategy in fabricating advanced EMI shielding composite with astonishing comprehensive performance.