Ceramic capacitor material and preparation method thereof

A technology of ceramic capacitors and raw materials, which is applied in the direction of capacitors, fixed capacitors, fixed capacitor dielectrics, etc., can solve the problems of difficult control of product uniformity, complex components, and many mixed substances, so as to achieve excellent performance, improve dielectric properties, The effect of small changes in temperature influence

Inactive Publication Date: 2018-09-11
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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  • Ceramic capacitor material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0023] A ceramic capacitor material is mainly made of the following raw materials in parts by weight: 20 parts of strontium carbonate, 30 parts of barium carbonate, 50 parts of butyl titanate, 2 parts of ammonium cerium nitrate, 1 part of glass fiber and 0.3 parts of manganese nitrate.

[0024] The ceramic capacitor material 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 cerium ammonium nitrate and manganese nitrate to form mixture I;

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

[0027] (3) Add mixture II to mixture I, 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 dry powder;

[0029] (5) Mix the dry powder with glass fiber, add 0.08 times the weight concentration o...

Embodiment 2

[0032] A ceramic capacitor material is mainly made of the following raw materials in parts by weight: 22 parts of strontium carbonate, 28 parts of barium carbonate, 40 parts of butyl titanate, 2.2 parts of ammonium cerium nitrate, 0.9 parts of glass fiber and 0.28 parts of manganese nitrate.

[0033] The ceramic capacitor material 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 cerium ammonium nitrate and manganese nitrate to form mixture I;

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

[0036] (3) Add mixture II to mixture I, 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 form a dry powder;

[0038] (5) Mix the dry powder with glass fiber, add 0.09 times the weight concentra...

Embodiment 3

[0041] A ceramic capacitor material is mainly made of the following raw materials in parts by weight: 24 parts of strontium carbonate, 26 parts of barium carbonate, 45 parts of butyl titanate, 2.4 parts of ammonium cerium nitrate, 0.8 parts of glass fiber and 0.26 parts of manganese nitrate.

[0042] The ceramic capacitor material 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 cerium ammonium nitrate and manganese nitrate to form mixture I;

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

[0045] (3) Add mixture II to mixture I, 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 a dry powder;

[0047] (5) Mix the dry powder with glass fiber, add 0.1 times the weight concentrat...

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Abstract

The invention discloses a ceramic capacitor material, which is mainly prepared from the following raw materials (by weight): 20-30 parts of strontium carbonate, 20-30 parts of barium carbonate, 30-50parts of butyl titanate, 2-3 parts of ceric ammonium nitrate, 0.5-1 part of glass fibre, and 0.2-0.3 part of manganous nitrate. The ceramic capacitor material is prepared by a sol-gel method. The final product has excellent dielectric properties, the influence of temperature is less, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to a ceramic capacitor material and a preparation method thereof. Background technique [0002] Ceramic capacitor materials are important electronic materials, and are the basis for manufacturing large-capacity, thin-layer, low-cost, high-voltage, high-performance, wide temperature range, and environmentally friendly capacitors. With the development of miniaturization of electronic devices, research on high-voltage resistance Ceramic capacitor materials with low dielectric loss and high volume resistivity 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 formula and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/47C04B35/624C04B35/82H01G4/12
CPCC04B35/468C04B35/47C04B35/624C04B35/803C04B2235/3229C04B2235/3262C04B2235/442C04B2235/443C04B2235/5216H01G4/1227
Inventor 吴芳王伟张向丹乔庆鹏
Owner ZHENGZHOU INST OF TECH
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