▎ 摘　　要

NOVELTY - Preparing Ku-band composite wave-absorbing material involves synthesizing silicon-modified graphene oxide using silicon-oxygen coupling principle. The mixture of the hydrated iron salt and silicon-modified graphene oxide, surfactant, and ethylene glycol are added to the ethylene glycol mixed solution of acetate. The silicon-modified magnetic graphene is generated by the hydrothermal synthesis method. The certain amount of polyvinylidene fluoride is taken and dissolved in organic solution. The certain amount of the above-mentioned silicon-modified graphene magnetic composite absorber are added and mixed well, placed in oven to heat the solvent to completely volatilize to obtain final product. USE - Method for preparing Ku-band composite wave-absorbing material. ADVANTAGE - The method enables to prepare Ku-band composite wave-absorbing material that achieves effect of strong absorption of the composite absorbing material in the high frequency band.