▎ 摘　　要

NOVELTY - Graphene magnetic shielding film comprises a supporting framework made of a porous graphene material and a functional material loaded on the surface of the supporting framework. The functional material includes magnetic metal nanoparticles doped with rare earth metals and a metal coating. The shielding efficiency E1 of the graphene magnetic shielding film in the low frequency band of 50-500 KHz is less than 10 dB, and the shielding efficiency E2 is less than 50 dB in the high frequency band of 30 M-3 GHz. The graphene magnetic shielding film has a thermal conductivity K1 more than 120 W/(m*K) in the transverse direction, and a thermal conductivity K2 more than 3 W/(m*K) in the longitudinal direction. USE - Graphene magnetic shielding film is used in aerospace, information communication, industrial production, and medical health fields. ADVANTAGE - The graphene magnetic shielding film has high conductivity of the graphene gel as supporting framework, and wider electromagnetic wave shielding frequency range. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of graphene magnetic shielding film.