| 摘要 |
<p>A method for preparing a piezoelectric fiber composite comprises the following steps: a. preparing a piezoelectric ceramic green compact; b. preparing a carbon black green compact; c. cutting the carbon black green compact prepared in step b and the piezoelectric ceramic green compact that is prepared and stripped in step a, performing stacking at intervals to form a carbon black/piezoelectric ceramic laminated green compact with a lamellar structure, and performing drying; d. heating the laminated green compact prepared in step c at a rate of 0.5 to 5°C/min to a temperature between 450 and 600°C and further heating the laminated green compact at a rate of 6 to 10°C/min to a temperature between 1200 and 1280°C, and cooling the laminated green compact with a furnace after keeping the temperature for 0.5 to 4 hours, to obtain a piezoelectric ceramic multilayer structure; and e. filling epoxy resin into the obtained piezoelectric ceramic multilayer structure, performing curing at a temperature between 25 and 60°C for 10 to 24 hours, then performing cutting to obtain a required size, and performing encapsulation by using an interdigital electrode, to obtain the piezoelectric fiber composite. According to the method, a conventional piezoelectric ceramic curtain coating slurry system is optimized, the density uniformity of the piezoelectric ceramic green compact is improved, and problems of a high shrinking percentage and serious deformation of the curtain coating system in a sintering process are controlled effectively.</p> |
