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Silver conductor paste for semiconductor ceramic capacitor electrode and preparation method of silver conductor paste

A technology of ceramic capacitors and silver conductor paste, which is applied in the direction of fixed capacitor electrodes, conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, etc., can solve the problems of capacitor capacity reduction, etc., to improve capacitance, disperse Good performance and high adhesion

Active Publication Date: 2013-05-22
SUZHOU BETELY POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN200410015104.6 discloses a high-temperature-resistant lead-cadmium-free electronic paste, which involves the application of ceramic electronic components, glass electronic components and glass decoration. This electronic paste has no lead-cadmium components and will not cause environmental pollution. However, after replacing lead and cadmium with other materials, there is also the defect that the capacity of the capacitor is reduced.

Method used

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  • Silver conductor paste for semiconductor ceramic capacitor electrode and preparation method of silver conductor paste
  • Silver conductor paste for semiconductor ceramic capacitor electrode and preparation method of silver conductor paste
  • Silver conductor paste for semiconductor ceramic capacitor electrode and preparation method of silver conductor paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The steps of the preparation method of the silver conductor paste for the semiconductor ceramic capacitor electrode of the present embodiment are as follows:

[0029] S1. Determine the material proportion of the silver conductor paste for the semiconductor ceramic capacitor electrode, weigh 470g, an organic carrier with a viscosity of 170dPa s, and place 25 to 30% of the total amount of the organic carrier in the batching bucket;

[0030] S2. Taking the organic carrier as the basis of measurement, weigh 500g of silver powder with a particle size of 0.30μm, 3.4g of other metal powders with a particle size of 3.0μm, 26g of inorganic additives and 0.6g of glass powder, and put the weighed materials into the above In the batching bucket and mix well;

[0031] S3. Rolling the material obtained in step S2, the controlled rolling time is 20-30min per 10kg of rolling;

[0032]S4. When the fineness of the material obtained in step S3 reaches below 10 μm, put the material into t...

Embodiment 2

[0040] The steps of the preparation method of the silver conductor paste for the semiconductor ceramic capacitor electrode of the present embodiment are as follows:

[0041] S1. Determine the material ratio of the silver conductor paste for the semiconductor ceramic capacitor electrode, weigh 410g, the organic carrier with a viscosity of 150dPa s, and place 25 to 30% of the total amount of the organic carrier in the batching bucket;

[0042] S2. Taking the organic carrier as the basis of measurement, weigh 550g of silver powder with a particle size of 0.55μm, 11.3g of other metal powders with a particle size of 3.4μm, 28g of inorganic additives and 0.7g of glass powder, and put the weighed materials into the above-mentioned In the batching bucket and mix well;

[0043] S3. Rolling the material obtained in step S2, the controlled rolling time is 20-30min per 10kg of rolling;

[0044] S4. When the fineness of the material obtained in step S3 reaches below 10 μm, put the materia...

Embodiment 3

[0052] The steps of the preparation method of the silver conductor paste for the semiconductor ceramic capacitor electrode of the present embodiment are as follows:

[0053] S1. Determine the material proportion of the silver conductor paste for the semiconductor ceramic capacitor electrode, weigh 360g, an organic carrier with a viscosity of 70dPa s, and place 25 to 30% of the total amount of the organic carrier in the batching bucket;

[0054] S2. Taking the organic carrier as the measurement basis, weigh 600g of silver powder with a particle size of 0.86μm, 18g of other metal powders with a particle size of 3.8μm, 21.2g of inorganic additives and 0.8g of glass powder, and put the weighed materials into the above-mentioned In the batching bucket and mix well;

[0055] S3. Rolling the material obtained in step S2, the controlled rolling time is 20-30min per 10kg of rolling;

[0056] S4. When the fineness of the material obtained in step S3 reaches below 10 μm, put the materia...

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Abstract

The invention relates to the technical field of silver conductor paste and a preparation method thereof, in particular to silver conductor paste for a semiconductor ceramic capacitor electrode and a preparation method of the silver conductor paste. The silver conductor paste comprises, in weight percent, 50-60% of Ag, 0.1-1.8% of other metals, 1.5-4.5% of inorganic additives, 0.05-0.1% of glass powder and 35-48% of organic carriers. Consumption of silver powder is decreased, the other metals are added, the obtained silver conductor paste is fine in dispersity, small in particle size distribution, low in sintering shrinkage, high in adhesive force, excellent in electrical performance and free of pungent smell, lead and cadmium and is applied to the semiconductor ceramic capacitor electrode, the electric capacity of a capacitor can be effectively improved by 5-10nF, silver consumption corresponding to a single capacitor is reduced by about 7%, accordingly, production cost can be reduced, and market competitiveness can be improved.

Description

technical field [0001] The invention relates to the technical field of silver conductor paste and a preparation method thereof, and more particularly relates to a silver conductor paste for semiconductor ceramic capacitor electrodes and a preparation method thereof. Background technique [0002] Silver electronic paste is a kind of conductive paste commonly used in the electronics industry. It is a high-tech product integrating electronics, chemical industry and metallurgy. It is the main basic material in the electronic industry, especially the basic material widely used in ceramic capacitors. Silver electronic paste forms a conductive film on the substrate through screen printing, leveling, drying, sintering and other processes, and is widely used in various electronic components. [0003] The glass powder used in traditional silver electronic pastes contains a large amount of heavy metals such as lead and cadmium, because glass containing lead and cadmium has high resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00H01G4/008
Inventor 资定红张樱
Owner SUZHOU BETELY POLYMER MATERIALS CO LTD
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