Lightweight and highly conductive silver nanoparticles functionalized meta-aramid nonwoven fabric for enhanced electromagnetic interference shielding

High-performance electromagnetic interference (EMI) shielding material that can function properly under extreme working conditions is critical for their practical applications. Herein, flexible and highly conductive meta-aramid (PMIA) nonwoven fabrics were fabricated by combining polydopamine (PDA) modification electroless silver plating. The PDA greatly enhanced the efficient deposition of nanoparticles (AgNPs) interfacial cohesion between AgNPs PMIA fibers. silver-coated fabric exhibited an electrical conductivity as high 0.29 Ω/sq, excellent EMI effectiveness (SE) 92.6 dB a absolute SE 8194.7 cm2 g−1. In addition, maintained after being subjected to washing, bending torsion deformations, high/low temperature, strong acidic/alkaline solutions different organic solvents. These results have clearly demonstrated be made electrically using simple scalable method. It holds great promise applications in materials used various harsh conditions.