Lightweight and\nHigh Mechanical Strength Silver Nanowire/Hydroxypropyl\nMethylcellulose Electromagnetic Interference Shielding Composite

Abstract

Harmful electromagnetic radiation has become a serious\nproblem.\nHigh-performance electromagnetic shielding materials play a vital\nrole in controlling or reducing electromagnetic radiation conduction.\nThe high density and poor environmental stability of common metal-based\nelectromagnetic shielding materials severely limit their further development.\nAg nanowire (NW) aerogels are feasible lightweight and high-performance\nelectromagnetic shielding materials. Here, we report a hydroxypropyl\nmethylcellulose (HPMC) and Ag NWs composite aerogel that has low density\n(<77 mg cm^–3), high porosity (>95.09%), excellent\nmechanical properties (tensile strength of 0.27 MPa and compressive\nstress of 1.3 MPa), and electromagnetic shielding performance of above\n89 dB.