▎ 摘　　要

NOVELTY - Composite material comprises a carrier layer, a wave-absorbing layer and an adhesive layer arranged in sequence. The carrier layer is used for bearing the wave-absorbing layer to improve the structural strength of the wave-absorbing functional layer, and reducing the thermal expansion coefficient of the wave-absorbing functional layer. The wave-absorbing layer is used for absorbing the electromagnetic wave. The adhesive layer is used for improves the spreading process of the wave-absorbing functional layer. USE - Used as composite material wave-absorbing functional layer. ADVANTAGE - The composite material is easy to deform, and economical. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparation method of wave-absorbing function layer of composite material comprising (i) using coating method to prepare the wave-absorbing material into a continuous film, (ii) preparing the carrier layer and one side of the wave absorbing layer by hot melting method, and (iii) thermally pressing the adhesive layer on the other side of the wave-absorbing layer by the hot melting method to form wave absorbing functional layer; and Using method of the wave-absorbing function layer of composite material, comprising according to the stealth requirements of the composite material in different electromagnetic wave frequency bands, setting the layer number of the wave-absorbing function layer and the spreading angle at absorbing functional layer, stacking the above-mentioned wave-absorbing functional layers in sequence according to the laying angle, and co-curing and integrally forming with the composite material by an autoclave. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of wave absorbing function layer. 1Carrier layer 2Wave-absorbing layer 3Adhesive layer 4Wave-absorbing function layer