▎ 摘　　要

NOVELTY - The preparation method of nanocomposite absorbing material involves compounding alkynyl modified magnetic nanoparticles with azide modified oxidized graphene matrix, mixing alkylated modified magnetic nanoparticles and azide-modified graphene oxide substrate in a weight ratio of (5-10):1, covalently chelating the alkynylated modified magnetic nanoparticles onto the surface of azide-modified graphene oxide by cycloaddition reaction, carrying out hydrazine hydrate reduction and forming a ferrite-graphene nanocomposite absorbing material. USE - Preparation of nanocomposite absorbing material (claimed) used in electromagnetic shielding applications. ADVANTAGE - The graphene-ferrite composite material has excellent electrical conductivity, magnetic properties, strong acid resistance property and stability, and improves the impedance matching material absorbing properties, and has excellent microwave absorbency in C-band and Ku-band. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the nanocomposite absorbing material.