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Medium material for ceramic capacitors

A technology of ceramic capacitors and dielectric materials, applied in the field of electronic materials, can solve the problems of difficult control of product uniformity, complex composition, and many doped substances, and achieve excellent performance, increased dielectric properties, and small changes in temperature effects

Inactive Publication Date: 2018-08-17
ZHENGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The improved semiconductor ceramic capacitor material prepared has large capacitance, stable capacitance performance, high dielectric constant, and small volume; however, the capacitor material uses more raw materials, that is, there are more substances in the ceramic body. The composition is complex, and the uniformity of the product after sintering is difficult to control

Method used

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  • Medium material for ceramic capacitors

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Effect test

Embodiment 1

[0023] A dielectric material for ceramic capacitors, mainly made of the following raw materials in parts by weight: 15 parts of strontium carbonate, 25 parts of barium carbonate, 35 parts of butyl titanate, 0.2 part of zirconium n-butoxide, 0.8 part of glass fiber, manganese nitrate 0.2 parts and polyethylene glycol 0.5 parts.

[0024] The dielectric material for the ceramic capacitor is prepared by the following steps:

[0025] (1) Dissolve strontium carbonate and barium carbonate in citric acid solution, stir at 55°C for 20 minutes, then add manganese nitrate to form mixture I;

[0026] (2) Dissolving butyl titanate in 3 times the weight of glycerol to form mixture II;

[0027] (3) Add mixture II to mixture I, and add zirconium n-butoxide and polyethylene glycol with stirring in turn, control the temperature of the system at 85-90°C, and stir until a gel is formed;

[0028] (4) The gel is dried at 95-105°C for 10 hours and then calcined at 850-900°C for 2 hours to form a d...

Embodiment 2

[0032] A dielectric material for ceramic capacitors, mainly made of the following raw materials in parts by weight: 16 parts of strontium carbonate, 20 parts of barium carbonate, 30 parts of butyl titanate, 0.22 parts of zirconium n-butoxide, 0.75 parts of glass fiber and manganese nitrate 0.22 parts, polyethylene glycol 0.45 parts.

[0033] The dielectric material for the ceramic capacitor is prepared by the following steps:

[0034] (1) Dissolve strontium carbonate and barium carbonate in citric acid solution, stir at 55°C for 20 minutes, then add manganese nitrate to form mixture I;

[0035] (2) Dissolving butyl titanate in 3 times the weight of glycerol to form mixture II;

[0036] (3) Add mixture II to mixture I, and add zirconium n-butoxide and polyethylene glycol with stirring in turn, control the temperature of the system at 85-90°C, and stir until a gel is formed;

[0037] (4) The gel is dried at 95-105°C for 10 hours and then calcined at 850-900°C for 2 hours to fo...

Embodiment 3

[0041] A dielectric material for ceramic capacitors, mainly made of the following raw materials in parts by weight: 18 parts of strontium carbonate, 18 parts of barium carbonate, 35 parts of butyl titanate, 0.25 parts of zirconium n-butoxide, 0.7 parts of glass fiber and manganese nitrate 0.25 parts, polyethylene glycol 0.4 parts.

[0042] The dielectric material for the ceramic capacitor is prepared by the following steps:

[0043] (1) Dissolve strontium carbonate and barium carbonate in citric acid solution, stir at 55°C for 20 minutes, then add manganese nitrate to form mixture I;

[0044] (2) Dissolving butyl titanate in 3 times the weight of glycerol to form mixture II;

[0045] (3) Add mixture II to mixture I, and add zirconium n-butoxide and polyethylene glycol with stirring in turn, control the temperature of the system at 85-90°C, and stir until a gel is formed;

[0046] (4) The gel is dried at 95-105°C for 10 hours and then calcined at 850-900°C for 2 hours to form...

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Abstract

The invention discloses a medium material for ceramic capacitors, which belongs to the technical field of electronic materials. The medium material is mainly prepared from the following materials in parts by weight: 15 to 25 parts of strontium carbonate, 15 to 25 parts of barium carbonate, 25 to 35 parts of butyl titanate, 0.2 to 0.4 parts of zirconium n-butoxide, 0.5 to 0.8 parts of glass fibers,0.2 to 0.3 parts of manganese nitrate and 0.3 to 0.5 parts of polyethylene glycol. The material is prepared by adopting a sol-gel method, the final product has excellent dielectric property, change caused by the influence of temperature is minor, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to a dielectric material for ceramic capacitors. Background technique [0002] The ceramic capacitor dielectric material is an important electronic material, and it is the basis for manufacturing capacitors with large capacity, thin layer, low cost, high voltage, high performance, wide temperature range, and environmental friendliness. With the development of miniaturization of electronic devices, research on resistance Ceramic capacitor materials with high voltage, low dielectric loss and small temperature changes can better meet the needs of the industry. [0003] Chinese Patent Publication No. CN106554201A discloses a lead-free high-voltage ceramic capacitor material, which is made of the following components: barium titanate, titanium dioxide, calcium carbonate, zirconium dioxide, silicon dioxide, and modified additives. Compared with the existing technology, the f...

Claims

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Application Information

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IPC IPC(8): C04B35/49C04B35/82C04B35/622
CPCC04B35/49C04B35/622C04B35/82C04B2235/3213C04B2235/3215C04B2235/3262
Inventor 乔庆鹏张向丹王伟吴芳
Owner ZHENGZHOU INST OF TECH
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