Vacuum auxiliary forming method suitable for composite sandwich material with embedded damping layer

The invention discloses a vacuum auxiliary forming method suitable for a composite sandwich material with an embedded damping layer. The permeation between an upper surface and a lower surface of the damping layer is solved by utilizing double-face slotted foams, thus the vacuum auxiliary formation of the composite sandwich material with the embedded damping layer can be realized. Through the vacuum auxiliary forming method disclosed by the invention, the vacuum auxiliary formation of the composite sandwich material with the embedded damping layer is realized, and the foundation is established for engineering post-application of the composite sandwich material with the embedded damping layer; the prepared composite material not only has high rigidity, low density and high damping characteristics, but also can be widely applied to parts, such as spaceflight, ships and the like with special requirements on the vibration, and also has wide application prospect and remarkable military benefits; in addition, co-solidification once molding of the damping layer can be realized, and the quality of the prepared composite sandwich material is stable.