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High-performance BaTiO3-based ceramic dielectric material with core-shell structure and preparation method thereof

A technology of ceramic dielectric and core-shell structure, applied in the direction of fixed capacitor dielectric, electrical components, circuits, etc., can solve the problems of low dielectric constant, poor temperature stability, etc., and achieve the effect of improving withstand voltage performance and alleviating interface effects

Active Publication Date: 2021-01-05
SIYANG GRANDE ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing BaTiO3-based ceramic dielectric material has a low dielectric constant and poor temperature stability. During use, the performance changes with the change of the ambient temperature, and it is difficult to be directly used in high-reliability electric ceramic capacitors.

Method used

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  • High-performance BaTiO3-based ceramic dielectric material with core-shell structure and preparation method thereof
  • High-performance BaTiO3-based ceramic dielectric material with core-shell structure and preparation method thereof
  • High-performance BaTiO3-based ceramic dielectric material with core-shell structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A high-performance core-shell structure BaTiO 3 The base ceramic dielectric material comprises the following raw materials in parts by weight: 10 parts of barium titanate base material and 5 parts of coating material;

[0040] The BaTiO3-based ceramic dielectric material is made by the following steps:

[0041] Step S1: dissolving the coating material in toluene to prepare a coating solution;

[0042] Step S2: Disperse the barium titanate base material in deionized water, add 4-dimethylaminopyridine, and stir for 20 minutes at a rotational speed of 150 r / min to obtain a dispersion;

[0043] Step S3: Add the coating liquid prepared in step S1 to the dispersion liquid prepared in step S2, perform ultrasonic treatment for 1 h at a frequency of 3 MHz, and then distill at a temperature of 120° C. to obtain BaTiO3 base ceramic dielectric material.

[0044] Described barium titanate base material is made by following steps:

[0045] Step A1: Add barium titanate, ethanol, a...

Embodiment 2

[0055] A high-performance core-shell structure BaTiO 3 The base ceramic dielectric material comprises the following raw materials in parts by weight: 13 parts of barium titanate base material and 6 parts of coating material;

[0056] The BaTiO3-based ceramic dielectric material is made by the following steps:

[0057] Step S1: dissolving the coating material in toluene to prepare a coating solution;

[0058] Step S2: Disperse the barium titanate base material in deionized water, add 4-dimethylaminopyridine, and stir for 25 minutes at a rotation speed of 180 r / min to obtain a dispersion;

[0059] Step S3: Add the coating solution prepared in step S1 to the dispersion liquid prepared in step S2, and perform ultrasonic treatment for 1 hour at a frequency of 4 MHz, and then distill at a temperature of 130° C. to obtain BaTiO3 base ceramic dielectric material.

[0060] Described barium titanate base material is made by following steps:

[0061] Step A1: add barium titanate, eth...

Embodiment 3

[0071] A high-performance core-shell structure BaTiO 3 The base ceramic dielectric material comprises the following raw materials in parts by weight: 15 parts of barium titanate base material and 8 parts of coating material;

[0072] The BaTiO3-based ceramic dielectric material is made by the following steps:

[0073] Step S1: dissolving the coating material in toluene to prepare a coating solution;

[0074] Step S2: Disperse the barium titanate base material in deionized water, add 4-dimethylaminopyridine, and stir for 30 minutes at a rotation speed of 200 r / min to obtain a dispersion;

[0075] Step S3: Add the coating solution prepared in step S1 to the dispersion liquid prepared in step S2, perform ultrasonic treatment for 1.5 h at a frequency of 5 MHz, and then distill at a temperature of 130 ° C to obtain BaTiO3 based ceramic dielectric material.

[0076] Described barium titanate base material is made by following steps:

[0077] Step A1: Add barium titanate, ethanol...

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Abstract

The invention discloses a high-performance BaTiO3-based ceramic dielectric material with a core-shell structure and a preparation method thereof. The dielectric material comprises the following raw materials in parts by weight: 10-15 parts of a barium titanate base material and 5-8 parts of a coating material, the barium titanate base material is prepared through condensation of carboxyl on the surface of graphene and amino on the surface of an amination pre-carrier, the interface effect between matrixes can be relieved through coating of silicon dioxide, higher voltage can be shared, the voltage resistance of the dielectric material is improved, gamma aminopropyl triethoxy silane and dimethyl dimethoxy silane are used as raw materials of the coating material to react to prepare organic silicon resin, and then the organic silicon resin reacts with an intermediate 5, so that amino on the organic silicon resin reacts with bromomethyl on the intermediate 5 to prepare the coating material.According to the coating material, the temperature stability of the dielectric material is improved, the dielectric loss is lower, and the service life of the dielectric material is prolonged.

Description

technical field [0001] The invention belongs to the technical field of dielectric material preparation, in particular to a high-performance core-shell structure BaTiO 3 Base ceramic dielectric material and preparation method thereof. Background technique [0002] With the rapid development of information technology and electronic science and technology, higher requirements are put forward for electronic equipment, such as light weight, chip type and miniaturization. For these reasons, multilayer ceramic capacitors (MLCC) came into being. Multilayer Capacitors are an important class of passive electronic components. They are indispensable components in the electronics, communication and information industries. They can store charges, cut off DC, filter AC, provide tuning and oscillation, etc. With the rapid development, the application fields of multilayer capacitors are becoming wider and wider, including high-end fields such as avionics, automatic electronics, and environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/628C08G77/388C08G77/26H01G4/12H01G4/30
CPCC04B35/4682C04B35/62807C04B2235/483C08G77/26C08G77/388H01G4/1227H01G4/30
Inventor 刘志甫马名生储小兰罗亚成张建刚
Owner SIYANG GRANDE ELECTRONICS CO LTD