▎ 摘　　要

NOVELTY - Wave-absorbing composite material includes a wave-transmitting layer (3), a reflective layer (1), and a wave-absorbing layer (2) arranged between the wave-transmitting layer and the reflective layer, where the wave-absorbing layer comprises multiple layers of wave-absorbing hollow fabric composite materials stacked sequentially, and each layer of wave-absorbing hollow fabric composite material comprises a hollow fabric and a resin filled with a wave-absorbing agent dispersed on the surface of the hollow fabric fiber. USE - As wave-absorbing composite material. ADVANTAGE - The composite material has excellent overall performance, no interfacial property, and has the excellent performance of light weight, high strength, anti-delamination and impact resistance. In the method, the different wave-absorbing ply structures can be designed based on the requirements of electrical and mechanical properties to achieve compatibility of electrical and mechanical properties, and to meet the feasibility of the molding process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the composite material, involving (a) preparing materials such as hollow fabric, fiber cloth, resin and wave-absorbing agent, (b) preparing a wave-absorbing resin by dispersing and mixing the electric loss or magnetic loss type wave-absorbing agent into the resin and uniformly stirring to obtain a wave-absorbing resin, (c) preparation of a single-layer wave-absorbing hollow fabric composite material by sequentially placing fiber cloth and hollow fabric on the surface of the mold, using the vacuum guide molding process to compound the absorbing resin and the fabric into an electric loss or magnetic loss type single-layer absorbing hollow fabric composite material, and (d) preparation of light-weight sandwich structure wave-absorbing composite material by sequentially laying the reflective layer, multiple single-layer wave-absorbing hollow fabric composite materials, and the wave-transmitting layer, and adopting bag pressing or mold pressing or autoclave method to prepare and shape. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the wave-absorbing composite structure. Reflective layer (1) Wave-absorbing layer (2) Wave-transmitting layer (3)