▎ 摘　　要

NOVELTY - Preparing electromagnetic shielding functional layer material comprises mixing a precursor of a transition metal base material fully with an ion exchange resin, and uniformly adsorbing on a surface of the resin under the action of a surfactant to form a hybrid precursor, carrying out high-temperature calcining in an inert atmosphere to form metal oxide and resin carbide to form three-dimensional graphene frame composite material, preparing a slurry containing magnetic metal or metal oxide nanoparticles and carbon nanotube conductive agent, fully mixing with the transition metal oxide/graphene frame complex material and blast drying to prepare a graphene/carbon nanotube composite material loaded with magnetic metal oxide nanoparticles. USE - Preparation method of electromagnetic shielding functional layer material used in manufacturing awning cloth protecting clothes and device pad and preparing broadband high-efficiency electromagnetic shielding tent cloth (all claimed) . ADVANTAGE - The method enables to prepare electromagnetic shielding functional layer material that increases the shielding range of the electromagnetic wave, and optimizing the shielding efficiency.