Chip multilayer ceramic capacitor dielectric ceramic slurry and preparation method of dielectric

A multi-layer ceramic capacitor and dielectric technology, applied in ceramics, inorganic insulators, etc., can solve the problems of non-compliance with low carbon, high production cost, and high energy consumption.

Active Publication Date: 2012-09-05
GUODIAN LONGYUAN ELECTRICAL
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Problems solved by technology

This increases the cost and the requirements for the process in many ways, making the production process more complicated
The mainstream method results in high energy consumption, which not only

Method used

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  • Chip multilayer ceramic capacitor dielectric ceramic slurry and preparation method of dielectric
  • Chip multilayer ceramic capacitor dielectric ceramic slurry and preparation method of dielectric
  • Chip multilayer ceramic capacitor dielectric ceramic slurry and preparation method of dielectric

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Embodiment Construction

[0028] The present invention takes barium titanate (500nm in particle size) as the main component (92-97% of the mass of the slurry), adding a proper amount of diluent, dispersant, defoamer, binder A, and a certain amount of Sintering aid, put it in a ball mill for 2 hours, take it out, add binder B, continue ball milling for 1 hour, then spread the obtained slurry evenly on the aluminum plate, dry it at room temperature, put it in a resistance furnace for sintering, and sinter After the completion, take out the aluminum plate for detection; among them, the main function of the adhesive is to make the slurry stick to the aluminum plate when coating the plate. The adhesive A is mainly composed of polyurethane acrylate, and B is mainly composed of diamine and imidazole compounds. , Silane coupling agent, the ratio of A and B is about 5:1, adding A and B at the same time will make the slurry solidify quickly in a short time, so that the slurry cannot be fully ground.

[0029] (1)...

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Abstract

The invention discloses a chip multilayer ceramic capacitor dielectric ceramic slurry and preparation method of a dielectric, and belongs to the field of ceramic dielectric materials. The main component of the ceramic slurry provided by the invention is barium titanate, and also comprises a burning supporting agent, wherein the burning supporting agent comprises water glass and silicon dioxide, wherein the mass ratio of water glass to barium titanate is 1%-10%, and the mass ratio of silicon dioxide to barium titanate is 0.8%-1.2%. The preparation method of the dielectric comprises the following steps: 1) selecting a set quantity of the main component barium titanate, as well as the burning supporting agent, a diluent, a dispersion agent and a bonding agent A, and putting them into a ball milling machine for ball milling; 2) carrying out ball milling for a set period of time, then adding a set quantity of a bonding agent B in slurry after ball milling, and carrying out ball milling continuously; and 3) carrying out plate coating and sintering on the obtained slurry after ball milling for a set time, thereby obtaining the dielectric material. According to the invention, the energy consumption is reduced from all aspects greatly, and an MLCC (multiplayer ceramic chip capacitor) produced by the method is low in production cost and has good energy storage effect.

Description

technical field [0001] The invention belongs to a new technology of ceramic dielectric materials, and relates to a chip-type multilayer ceramic capacitor dielectric slurry and a method for preparing the dielectric. The prepared dielectric material can be applied to an insulating layer in a capacitor based on the Faraday principle, such as a dielectric layer in an MLCC. Background technique [0002] Dielectric properties are an important indicator for judging the energy storage capacity of a material. Because barium titanate has a high dielectric capacity, it is an important basis for research and production of supercapacitors at home and abroad. The performance of the layer is also a research hotspot, including improving the dielectric constant of the insulating layer, reducing the dielectric loss, and improving the withstand voltage capability. At present, the production of supercapacitor products at home and abroad, that is, chip multilayer ceramic capacitors, mainly inclu...

Claims

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Application Information

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IPC IPC(8): C04B35/468H01B3/12
Inventor 关晓春王田禾王国泉刘建民陈安卫周媛丁国峰
Owner GUODIAN LONGYUAN ELECTRICAL
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