A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of material preparation, and relates to a method for preparing ceramic/resin piezoelectric compound, particularly to a freeze-drying method. The method is characterized by including the following steps: quick-freezing a piezoelectric ceramic suspension taking water as a solvent; sublimating ice crystal in a low temperature vacuum environment to prepare a porous piezoelectric material biscuit with a layered structure and performing sintering to enable the wall thickness of the piezoelectric ceramic with the layered structure to be between 1 micron to 500 microns; filling the prepared porous piezoelectric ceramic with the layered structure with epoxy resin, so as to obtain the piezoelectric compound with the piezoelectric coefficient d 33 reaching 203 pC/N to the highest. The method overcomes limitation of a traditional preparation method, and the production cost is reduced.
The invention belongs to the technical field of material preparation, and relates to a method for preparing ceramic/resin piezoelectric compound, particularly to a freeze-drying method. The method is characterized by including the following steps: quick-freezing a piezoelectric ceramic suspension taking water as a solvent; sublimating ice crystal in a low temperature vacuum environment to prepare a porous piezoelectric material biscuit with a layered structure and performing sintering to enable the wall thickness of the piezoelectric ceramic with the layered structure to be between 1 micron to 500 microns; filling the prepared porous piezoelectric ceramic with the layered structure with epoxy resin, so as to obtain the piezoelectric compound with the piezoelectric coefficient d 33 reaching 203 pC/N to the highest. The method overcomes limitation of a traditional preparation method, and the production cost is reduced.
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