Fabrication of flexible and durable functional fabric with high electromagnetic shielding performances based on MXene

Abstract

The functional fabric with high electromagnetic shielding (EMI) performance, durability as well as good handle has been drawing increasing attention. Herein, AgNPs@MXene of high conductivity was prepared by in-situ reduction of AgNO3 onto MXene. Then, boron-enhanced AgNPs@MXene-PDA coating fabric (BAMP-F) of high properties was fabricated through polydopamine (PDA) coating, AgNPs@MXene assembly, and finally sodium tetraborate (Na2B4O7) densification. Results showed that the surface resistivity of AgNPs@MXene arrived at 7.22 × 10−4 Ω·m and decreased by one order in comparison with pure MXene. After 0.6 mol/L PDA coating, AgNPs@MXene deposition for 6 times, and 0.02 mol/L Na2B4O7 densification, the surface resistivity of BAMP-F reached 7.08 × 10−3 Ω·m and its EMI values of one layer attained 34.51 dB. Compared with AgNPs@MXene-PDA coating fabric (AMP-F), the electrical conductivity of BAMP-F improved by 47.6 % and its electromagnetic shielding performance increased by 42.8 %. BAMP-F possessed good handle and maintained excellent EMI performance after bending for 600 times, washing for 60 min, and tearing.