Preparation method and application of modified porous ceramic-based wave-transmitting material

The invention relates to a modified porous ceramic-based wave-transmitting material as well as a preparation method and application thereof. According to the method, a porous ceramic-based wave-transmitting material is used as a substrate material, then the substrate material is impregnated with a composite impregnation liquid, and then subsequent treatment is performed, so that the material with better ablation resistance is finally obtained. According to the composite impregnation liquid, polysilazane is used as a basic liquid, and a plurality of fillers and reagents are added and treated to obtain the composite impregnation liquid. The substrate material is impregnated and post-treated by adopting the composite impregnation liquid, so that the ablation resistance of the substrate material is improved. According to the method disclosed by the invention, the ceramic-based wave-transmitting material with excellent ablation resistance can be obtained at lower cost, and the performance, especially the ablation