Ceramic slurry for preparing porous layer as well as preparation method and application of ceramic slurry
A technology of ceramic slurry and porous layer, applied in the field of piezoelectric ceramics, can solve the problems of affecting the service life and easy to produce cracks, and achieve the effect of increasing the service life, reducing the influence of stress, and bonding firmly
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[0042] According to another typical embodiment of the present application, there is provided a method for preparing a ceramic slurry as described above, the preparation method comprising: step S1, mixing a solvent, a plasticizer, a dispersant and a thixotropic agent, Obtaining a ball milling solvent; Step S2, mixing the ball milling solvent and solid powder, and ball milling to obtain a mixed slurry; Step S3, filtering the mixed slurry through a screen to obtain a sieved slurry; Step S4, grinding the sieved slurry , homogenized to obtain ceramic slurry.
[0043] The piezoelectric ceramic slurry obtained by the above preparation method uses a multi-component solvent to widen the boiling point of the solvent, so that the solvent in the slurry can be uniformly and slowly volatilized during sintering, so that the combination of the slurry and the matrix is more effective. It is firm, avoiding the concentration of the boiling point of the slurry of the single-component solvent, a...
Embodiment 1
[0054] The piezoelectric ceramic paste of this embodiment is according to figure 1 The preparation was carried out as shown in the schematic diagram of the preparation flow.
[0055] First, take 30 g of terpineol, 40 g of butyl carbitol, 3 g of tributyl citrate, 7 g of butyl benzyl phthalate, 3 g of polyethylene glycol (molecular weight 400, Aladdin, the same below), 3 g of ethyl Cellulose (45-55mpa.s, 5% in tolutne:isopropanol 80:20, Aladdin, the same below) 5g, triethanolamine 7g, hydrogenated castor oil (H196306, Aladdin, the same below) 5g, add the above materials to a beaker Mix in medium, heat and stir in a water bath, the temperature of the water bath is 85°C, until the solid matter is completely dissolved, and then slowly stir for 2 hours to obtain a ball milling solvent.
[0056]The solid powder is selected from the same material as the piezoelectric ceramic matrix, specifically the PZT piezoelectric material produced by Shanghai Naiou Nano Technology Co., Ltd., and ...
Embodiment 2
[0059] Take 30 g of terpineol, 45 g of butyl carbitol, 1 g of tributyl citrate, 4 g of benzyl butyl phthalate, 5 g of polyethylene glycol, 3 g of ethyl cellulose, 7 g of triethanolamine, and 5 g of hydrogenated castor oil. , add the above materials into a beaker and mix, heat and stir in a water bath, the temperature of the water bath is 85 ° C, until the solid material is completely dissolved, and then slowly stir for 2 hours to obtain a ball milling solvent.
[0060] The modified piezoelectric ceramic material is selected, specifically, 1% wt copper oxide is doped in the piezoelectric ceramic matrix material, and the piezoelectric ceramic matrix material is PZT-PMN piezoelectric ceramic material. The sintering of the modified piezoelectric ceramic material The temperature is 80 °C lower than the sintering temperature of the piezoelectric ceramic matrix material. According to the ratio of ball milling solvent: solid powder 60%: 40%, add the material to the ball mill jar, and a...
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