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

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...

AI Technical Summary

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 does not meet the requirements of low carbon, but also has high production costs. At the same time, it has high requirements for electrodes and production equipment (high temperature resistance)

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