Preparation method for corrugated ceramic-based composite material flat plate

The invention discloses a preparation method for a corrugated ceramic-based composite material flat plate and relates to a preparation method for a composite material flat plate. The preparation method disclosed by the invention aims at solving the problem that forming is difficult in the prior art during the preparation of a ceramic-based corrugation sandwich structural plate. The preparation method comprises the following steps: I, mixing to prepare an impregnation liquid; II, preparing carbon fiber cloth into an upper panel, a lower panel and a core panel; III, filling into a corrugated plate to prepare a mould; IV, preparing an initial forming body; V, preparing a corrugated SiC composite material initial product; VI, preparing a corrugated SiC composite material intermediate; and VII, repeating the step VI to prepare the corrugated ceramic-based composite material flat plate. The corrugated ceramic-based composite material flat plate prepared by the preparation method disclosed by the invention not only has the goodness of the structure of the corrugated material, but also has the characteristics of high temperature resistance, corrosion resistance, oxidization resistance and friction resistance of the SiC ceramic. The preparation method disclosed by the invention is used for preparing the corrugated ceramic-based composite material flat plate.