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Preparation method of electronic ceramic powder material for electric apparatus elements

A technology for electronic ceramics and electrical components, which is applied in the field of preparation of electronic ceramic powders for electrical components, can solve the problems of affecting the performance of electronic ceramics, powder particle size is not fine enough, uneven, etc., to achieve lower temperature, dense ceramic structure, good performance

Inactive Publication Date: 2016-11-09
HUAIYUAN JINHAO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation methods of electronic ceramics are various, and the preparation process is mostly similar. In the preparation process, the preparation of electronic ceramic powder has a great influence on the performance of electronic ceramics, and the general powder preparation method has powder particle size that is not fine enough and uneven. And other problems, seriously affect the performance of electronic ceramics

Method used

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Examples

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Comparison scheme
Effect test

specific Embodiment 1

[0013] A preparation method of electronic ceramic powder for electrical components, the specific preparation steps are:

[0014] (1) Preliminary crushing and grinding: Add the mixed ceramic powder to water 0.6 times its own mass, mix for 5 minutes, and place it in a rod-type stirring mill for 2 hours;

[0015] (2) Drying and granulation: After drying the ground slurry at 140°C for 3 minutes, it is placed in a spray drying equipment for drying and granulation. The drying temperature is set to 300°C, and the moisture content of the particles after drying is 2%-4%;

[0016] (3) Pre-sintering: Put the prepared ceramic particles into a pre-sintering kiln for calcination for 2 hours, and set the calcination temperature to 800°C;

[0017] (4) Secondary grinding: After the pre-fired ceramic material is air-cooled to 100°C, put it in 1 times the mass of the ceramic material and let it stand and cool for 10 minutes, then mix for 5 minutes, and then put the mixed slurry into Grind in a ball mil...

specific Embodiment 2

[0018] A preparation method of electronic ceramic powder for electrical components, the specific preparation steps are:

[0019] (1) Preliminary crushing and grinding: Add the mixed ceramic powder to water 0.8 times its own mass, mix for 8 minutes, and place it in a disc-type stirring and grinding equipment for 3 hours;

[0020] (2) Drying and granulation: After drying the ground slurry at 160°C for 5 minutes, it is placed in a spray drying equipment for drying and granulation. The drying temperature is set to 300°C, and the moisture content of the particles after drying is 2%-4%;

[0021] (3) Pre-calcining: Put the prepared ceramic particles into a pre-calcining kiln for 3 hours and set the calcination temperature to 900°C;

[0022] (4) Secondary grinding: After the pre-fired ceramic material is air-cooled to 150°C, put it in 1.2 times the mass of the ceramic material and let it stand and cool for 12 minutes, then mix for 8 minutes, and then put the mixed slurry into Grind in a ball...

specific Embodiment 3

[0023] A preparation method of electronic ceramic powder for electrical components, the specific preparation steps are:

[0024] (1) Preliminary crushing and grinding: add the mixed ceramic powder to water 0.7 times its own mass, mix for 6 minutes, and place it in an annular agitating and grinding equipment for 2.5 hours;

[0025] (2) Drying and granulation: Dry the ground slurry at 150°C for 4 minutes, and then put it into a spray drying equipment for drying and granulation. The drying temperature is set to 300°C, and the moisture content of the particles after drying is 2%-4%;

[0026] (3) Pre-calcining: Put the prepared ceramic particles into a pre-calcining kiln for calcination for 2.5 hours, and set the calcination temperature to 850°C;

[0027] (4) Secondary grinding: After the pre-fired ceramic material is air-cooled to 130°C, put in water 1.1 times the mass of the ceramic material and let stand for 11 minutes to cool, then mix for 7 minutes, and then put the mixed slurry into ...

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Abstract

The invention discloses a preparation method of electronic ceramic powder material for electric apparatus elements. The preparation method concretely comprises the following steps: (1) preliminary crushing and grinding: water is added into a prepared and mixed ceramic powder material with mixing, and the mixture is placed in stirring and grinding equipment for grinding; (2) drying and granulation: slurry which is ground is dried, and placed in spray drying equipment for carrying out drying and granulating; (3) pre-burning: prepared ceramic particles are placed in a pre-burning kiln for calcining; (4) secondary grinding: after pre-burning, the ceramic material is cooled in air and placed in water, the material is permitted to stand and cooled with mixing, mixed slurry is placed in a bowl mill for grinding, after grinding, the electronic ceramic powder material is obtained. The method has the beneficial effects that the process system and parameter arrangement are reasonable, particle size of the electronic ceramic powder material is fine, temperature during subsequent calcination is reduced, the pre-burning process is introduced, and after calcination, the ceramic structure is more compact and has better performance.

Description

Technical field [0001] The invention relates to the technical field of electronic ceramic preparation, in particular to a preparation method of electronic ceramic powder for electrical components. Background technique [0002] Electronic ceramics refer to ceramics that can utilize electrical and magnetic properties in the electronics industry. Electronic ceramics finally obtain ceramics with new functions through precise control of the surface, grain boundaries and size structure. It is fundamentally different from general ceramics for electric power in chemical composition, microstructure and electromechanical properties. Mainly because it has high mechanical strength, high temperature and humidity resistance, radiation resistance, dielectric constant changes in a wide range, small dielectric loss tangent value, adjustable temperature coefficient of capacitance, high electrical strength and insulation resistance. And excellent aging performance. [0003] There are various prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/64
CPCC04B35/622C04B35/64
Inventor 姚坤姚望王传稳陈静高尚
Owner HUAIYUAN JINHAO ELECTRONICS TECH CO LTD
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