Isolation material for preventing adhesion of piezoelectric ceramic green body
A piezoelectric ceramic sheet and isolation material technology, which is applied in the field of piezoelectric ceramic sheet preparation, can solve the problems of piezoelectric ceramic sheet damage, poor fluidity of zirconia powder, and increased production costs, so as to overcome poor fluidity and reduce damage rate , the effect of preventing adhesion
Active Publication Date: 2016-03-30
GUIZHOU ZHENHUA HONGYUN ELECTRONICS
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Problems solved by technology
However, the fluidity of the zirconia powder is poor, and it is difficult to ensure uniform coating. The zirconia powder is easy to form accumulations on the surface of the green piezoelectric ceramic sheet; after high-temperature sintering, the surface of the product will produce many concave and convex points, which must be washed with water and dried. In order to print silver on the surface of the piezoelectric ceramic sheet
Not only the process is more complicated, but also the piezoelectric ceramic sheet is easy to be damaged during cleaning, which increases the production cost
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0009] The present invention will be further described below in conjunction with specific embodiment:
[0010] 1) Put zirconia into an electric furnace at 1670°C for sintering for 2 hours, grind it with a vibrating ball mill for 12 hours after cooling, and then send it into an ultrafine ball mill mixer to grind it into a powder with a particle size of 1.7±0.2 μm;
[0011] 2) Send the piezoelectric ceramic sheet into an electric furnace at 1380°C for sintering for 2 hours, grind it with a vibrating ball mill for 12 hours after cooling, and then send it into a rolling ball mill to grind it into a powder with a particle size of 1.7±0.2 μm;
[0012] 3) Mix zirconia powder, piezoelectric ceramic powder, and corn glutinous rice powder evenly in a weight ratio of 13:12:75, send them to a rolling ball mill for grinding for 1.5 hours, and pass through a 250-mesh sieve to obtain the product.
[0013] When in use, the insulating material of the present invention is evenly painted on the ...
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Abstract
The invention discloses an isolation material capable of avoiding adhesion of green bodies of piezoelectric ceramic plates, belongs to a preparation method of piezoelectric ceramic plates, and aims to provide a piezoelectric ceramic plate green body isolation material incapable of forming concave and convex points on the surfaces of the piezoelectric ceramic plates after being sintered. A preparation method of the isolation material comprises the following steps: sintering zirconium oxide at 1670 DEG C for 2 hours, cooling zirconium oxide and grinding zirconium oxide into powder with a granularity of 1.7+ / -0.2 microns; sintering piezoelectric ceramic plates at 1380 DEG C for 2 hours, cooling the piezoelectric ceramic plates and then grinding the piezoelectric ceramic plates into powder with a granularity of 1.7+ / -0.2 microns; uniformly mixing the zirconium oxide powder, piezoelectric ceramic powder and corn gorgon fruit powder according to a weight ratio of 13 to 12 to 75, grinding the powder by a ball mill and then sieving the powder through a 250mesh sieve. The isolation material can be directly used for printing silver on the surfaces of the piezoelectric ceramic plates without washing after being sintered; the process is simplified; the damage rate of the piezoelectric ceramic plates is reduced; the isolation material is capable of avoiding adhesion of green bodies of piezoelectric ceramic plates during the sintering of the piezoelectric ceramic plates.
Description
technical field [0001] The invention relates to a preparation method of a piezoelectric ceramic sheet, in particular to an insulating material for preventing the green body of the piezoelectric ceramic sheet from sticking during the sintering process. Background technique [0002] Piezoelectric ceramic sheet is a widely used electronic component, and its product thickness is relatively thin (only 0.05 ~ 0.25mm); in order to improve productivity, usually several piezoelectric ceramic sheet green bodies are stacked together for sintering. In order to prevent the piezoelectric ceramic green bodies from sticking to each other, it is generally necessary to paint the surface of adjacent piezoelectric ceramic green bodies with zirconia powder that has been sintered at 1490 °C and has a particle size of 2.5±0.2 μm. However, the fluidity of the zirconia powder is poor, and it is difficult to ensure uniform coating. The zirconia powder is easy to form accumulations on the surface of t...
Claims
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IPC IPC(8): C04B35/66C04B35/48
Inventor 吴红云张玉芬吴康和张田才戴昭波
Owner GUIZHOU ZHENHUA HONGYUN ELECTRONICS