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Ceramic slurry for preparing multilayer electrocaloric ceramic element and preparation method of ceramic slurry

A technology for ceramic components and ceramic paste, which is applied in the preparation of ceramic paste for multilayer electric card ceramic components and the field of preparation thereof, can solve the problems that the maximum temperature change value is not near room temperature and the applied voltage value is high, and achieves small deformation and high capacitance. , the effect of moderate toughness

Active Publication Date: 2017-03-08
KUSN HISENSE ELECTRONICS
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But the disadvantage is that the applied voltage value is higher than 220V, and the maximum temperature change value is not near room temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of porcelain slurry for preparing multi-layer electric card ceramic components, wherein the basic chemical formula of the ceramic powder is BaZr 0.2 Ti 0.8 o 3 ; The average particle size of the ceramic powder is 0.4 μm, and the median value of the particle size distribution is D 50 0.6μm; the modified additive is MnO 2 and Nb 2 o 5 , the average particle size is 0.3μm, and the median value of the particle size distribution is D 50 0.5μm; sintering aid is Bi 2 o 3 and Li 2 O, the average particle size is 0.3μm, the median value of particle size distribution D 50 is 0.5 μm; the composition weight percentage of the first solution and the second solution is shown in Table 1.

[0038] Table 1 The first solution and the second solution composition weight percent

[0039] polyvinyl butyral butanone Absolute ethanol polyethylene glycol 200 first solution 4.76％ 47.62％ 47.62％ 0 second solution 16.73％ 39.65％ 39.65％ 3.97％

...

Embodiment 2

[0051] A kind of porcelain slurry that is used to prepare multilayer electrical card ceramic components, wherein the basic chemical formula of ceramic powder is Ba(Zr 0.144 Ti 0.836 sn 0.02 )O 3 ; The average particle size of the ceramic powder is 0.4 μm, and the median value of the particle size distribution is D 50 0.6μm; the modified additive is MnO 2 and Nb 2 o 5 , the average particle size is 0.3μm, and the median value of the particle size distribution is D 50 0.5μm; sintering aids are ZnO, B 2 o 3 and Bi 2 o 3 , the average particle size is 0.3μm, and the median value of the particle size distribution is D 50 is 0.5 μm; the composition weight percentage of the first solution and the second solution is shown in Table 2.

[0052] Table 2 The first solution and the second solution composition weight percent

[0053] polyvinyl butyral butanone Absolute ethanol polyethylene glycol 200 first solution 4.76％ 47.62％ 47.62％ 0 second solu...

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Abstract

The invention provides ceramic slurry for preparing a multilayer electrocaloric ceramic element and a preparation method of the ceramic slurry. The ceramic slurry is prepared from the following components: barium titanate based ceramic powder, a modifying additive accounting for 0-1% of the weight of the barium titanate based ceramic powder, a sintering aid accounting for 0-5% of the weight of the barium titanate based ceramic powder, a dispersing agent accounting for 2%-10% of the weight of the barium titanate based ceramic powder, a first solution accounting for 30%-50% of the weight of the barium titanate based ceramic powder and a second solution accounting for 28%-48% of the weight of the barium titanate based ceramic powder, wherein the first solution contains an adhesive, ketone solvents and alcohol solvents; the second solution contains an adhesive, ketone solvents, alcohol solvents and a plasticizer. The ceramic slurry has the advantages that the ceramic slurry has good dispersibility and superior performance; the prepared multilayer electrocaloric ceramic refrigerating element has high capacitance, low dielectric loss and good electrocaloric characteristic.

Description

technical field [0001] The invention relates to the field of ceramic slurry and a preparation method thereof, in particular to a porcelain slurry for preparing multilayer electric card ceramic components and a preparation method thereof. Background technique [0002] Electrocaloric Effect (EC effect or ECE for short), refers to the reversible temperature change of polar materials under the action of an external electric field, which is the relationship between the thermal properties (such as entropy and temperature) and electrical properties (electric field and electrode) of dielectric materials. ) results of mutual coupling. In this kind of polar material, the change of the applied electric field intensity causes the change of the corresponding electric polarization intensity, which in turn leads to the entropy change of the dielectric material. The entropy change can be determined by measuring the isothermal entropy change ΔS in the dielectric. If the electric field stren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/49C04B35/468
CPCC04B35/4682C04B35/49C04B2235/3213C04B2235/3293C04B2235/96
Inventor 徐海生陈建伟任雪婷梁柱
Owner KUSN HISENSE ELECTRONICS
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