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Ceramic casting slurry and preparation method thereof

A technology of casting slurry and ceramics, which is applied in the field of ceramic thick film casting, can solve the problems of inability to obtain high-quality cast thick film, decrease the solid content of slurry, increase the amount of solvent, etc., and achieve the benefit of casting process Control, small amount of solvent, high controllability effect

Inactive Publication Date: 2013-04-24
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Problems solved by technology

Therefore, in the case of the same amount of solvent, the viscosity of the slurry using ester as solvent is relatively high, and it is impossible to obtain a high-quality cast thick film; and to obtain the same viscosity, the amount of solvent must be increased, resulting in a solid slurry. content reduction

Method used

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  • Ceramic casting slurry and preparation method thereof

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Embodiment 1

[0026]The mixed solvent is composed of absolute ethanol and ethyl acetate, and the weight ratio of the two is 1:1. The adhesive is polyvinyl formal B06SY from Taiwan Changchun Petrochemical Company. The adhesive is dissolved in the above mixed solvent to obtain a 30 wt% solution, and the amount of the adhesive solution is 80 grams. The ceramic powder is X7R dielectric ceramic powder, and the dosage is 500 grams. The amount of solvent used was 105 grams. The dispersant is triolein, and the dosage is 1.5 wt% of the ceramic powder. The plasticizer is butyl benzyl phthalate and polyethylene glycol 400, the ratio of the two is 1:1, and the total amount of plasticizer is 50 wt% of the adhesive. When preparing the slurry, first add the ceramic powder, solvent and dispersant to the nylon ball mill tank and mill for 10 hours, then add the above-mentioned binder solution and plasticizer to the ball mill tank and continue the ball mill for 48 hours to obtain the casting slurry. The ca...

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Abstract

The invention relates to a ceramic casting slurry and a preparation method thereof. The ceramic casting slurry is characterized by comprising a ceramic powder, a mixed solvent of alcohol and ester, a binder, a plasticizer and a dispersing agent; and the ceramic powder accounts for 65-75wt%, and a weight ratio of the ceramic powder to the mixed solvent is 5:2-4:1. The ceramic casting slurry provided by the invention has high solid content; and the mixed solvent of alcohol and ester has low cost, good environment compatibility, and low poison to the human body.

Description

technical field [0001] The invention relates to the field of ceramic thick-film casting preparation, in particular to a ceramic casting slurry, especially an environmentally friendly ceramic casting slurry based on an alcohol-ester mixed solvent and a preparation method thereof. Background technique [0002] Ceramic thick film casting is a ceramic thick film preparation technology with a history of more than 60 years, and it is the technological basis of multilayer ceramic devices. The tape casting process usually includes slurry preparation, ball milling, molding, stripping the base tape and other processes. This process has the advantages of simple equipment, stable process, continuous operation, high production efficiency, etc., and can achieve a high degree of automation. Moreover, tape casting can easily control the thickness of the film, which is conducive to the design and structural regulation of film materials with different components and thicknesses to obtain spec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/632
Inventor 刘志甫李永祥
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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