▎ 摘　　要

NOVELTY - A broadband composite microwave-absorbing material comprises epoxy resin as substrate, and a conductive filler containing thermal-expanded graphene, carbon fiber, carbonyl iron powder and nickel-copper-ferrite composite nanomaterials, and is prepared by using vacuum defoaming and stirring method. The conductive filler is evenly distributed in the substrate. USE - Broadband composite microwave-absorbing material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the broadband composite microwave-absorbing material.