| abstract |
The invention relates to a preparation method of a two-dimensional curved surface piezoelectric composite material element, which includes two preparation processes. One of the preparation processes is to add a two-dimensional curved surface mold to the upper and lower surfaces of the ceramic array formed by cutting to make it reach two-dimensional curved surface bending molding. After removing the upper mold, pour resin to solidify and form a two-dimensional curved surface composite material, and finally remove the upper and lower molds and lining film. to form sensitive elements. Another preparation process first performs bidirectional cutting of a certain thickness on the side of the polarization direction of the piezoelectric ceramic, fills it with flexible materials, and then performs bidirectional cutting on the opposite surface of the ceramic filled with flexible materials, and adds a two-dimensional layer to the side filled with flexible materials. Curved surface mold, and then resin is poured on the newly cut side, and the two-dimensional curved surface mold is also placed on this side, and the two-dimensional curved surface sensitive element is finally cured and formed. The invention can prepare two-dimensional curved piezoelectric composite materials, and can realize horizontal and vertical omnidirectional radiation of sound waves. |