Barium strontium titanate thick film ceramic material, and preparation method and application thereof
A barium strontium titanate and thick film technology is applied in the field of barium strontium titanate thick film ceramic materials and their preparation, which can solve the problems of unsatisfactory grain size and dielectric constant, and achieve a large electric card effect and high dielectric Constant, dense effect of thick film structure
Inactive Publication Date: 2019-05-07
GUANGDONG UNIV OF TECH
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Problems solved by technology
[0005] The invention provides a barium strontium titanate thick film ceramic material and its preparation method and application, which solves the technical problems of unsatisfactory grain size and dielectric constant in the existing functional ceramic materials
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Embodiment 1
[0034] Ba(CH 3 COO) 2 , Sr(CH 3 COO) 2 Mix with KOH and dissolve in 35ml of deionized water, preferably with a KOH concentration of 2mol / L, and magnetically stir at 75°C for 10min to obtain a barium hydroxide solution. Secondly, a certain amount of Ti(OCH(CH 3 ) 2 ) 4 Dissolve in absolute ethanol, and stir magnetically at 75°C for 15 minutes to obtain an alcohol solution of titanium. The above two solutions were mixed, stirred magnetically for 30 min at 75° C. to obtain a milky white turbid solution, which was poured into a polytetrafluoroethylene cup in an autoclave, and the filling degree was controlled at 70% (the volume of the polytetrafluoroethylene container was 100ml), then the reaction kettle can be put into a pre-adjusted temperature vacuum oven for hydrothermal reaction. The hydrothermal reaction temperature is first raised to 80°C-100°C and kept for 10h-20h, then rapidly raised to 160°C-240°C and kept for 60h-100h. Pour off the upper layer solution obtained ...
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Abstract
The invention relates to the technical field of functional ceramics, and concretely relates to a barium strontium titanate thick film ceramic material, and a preparation method and an application thereof. The preparation method of the barium strontium titanate thick film ceramic sequentially comprises the following steps: 1, taking Ba(CH3COO)2, Sr(CH3COO)2, a KOH solution and a Ti(C4H90)4 solution, and carrying out a hydrothermal reaction to obtain a Ba0.6Sr0.4TiO3 powder; 2, mixing the Ba0.6Sr0.4TiO3 powder with a dispersant and a first solvent, and performing roll milling to obtain a suspension; 3, mixing the suspension with a plasticizer, a binder and a second solvent, and carrying out secondary roll milling to obtain a casting slurry; 4, casting the casting slurry to obtain a film zonebody; and 5, sintering the film zone body to obtain the barium strontium titanate thick film ceramic. The barium strontium titanate thick film ceramic material, and the preparation method and the application thereof are provided to solve the technical problem that the grain size and the dielectric constant of existing functional ceramic materials are unsatisfactory.
Description
technical field [0001] The invention relates to the technical field of functional ceramics, in particular to a barium strontium titanate thick-film ceramic material and a preparation method and application thereof. Background technique [0002] With the development of the times, refrigeration has been widely used in life, medical and other fields, and has attracted people's attention. However, the traditional refrigeration method has been unable to meet people's requirements due to its disadvantages such as low conversion efficiency and polluting the environment. The research and improvement of refrigeration methods are imminent. Refrigeration technology is mainly divided into electric card refrigeration, magnetic card refrigeration, semiconductor refrigeration, etc. Compared with other electric card refrigeration technologies, electric card refrigeration has the advantages of high conversion efficiency, environmental protection, and small device size. [0003] The size of ...
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IPC IPC(8): C04B35/468C04B35/622H01G4/12H01G4/30
Inventor 鲁圣国邹艺轩梁俊伟
Owner GUANGDONG UNIV OF TECH