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Nickel paste for multilayer ceramic capacitor based on gravure coating printing and application of nickel paste

A multi-layer ceramic and capacitor technology, applied in the direction of multilayer capacitors, capacitors, fixed capacitors, etc., to achieve the effect of good continuity, high yield and good graphics

Active Publication Date: 2019-04-12
大连海外华昇电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is only based on the screen printing process. The printing characteristics of gravure coating are completely different from those of screen printing. It needs a conductive paste with good rheology and low viscosity. Based on the rheology of this paste, the printing process of gravure coating technology The impact requires further research

Method used

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  • Nickel paste for multilayer ceramic capacitor based on gravure coating printing and application of nickel paste
  • Nickel paste for multilayer ceramic capacitor based on gravure coating printing and application of nickel paste
  • Nickel paste for multilayer ceramic capacitor based on gravure coating printing and application of nickel paste

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Experimental program
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Effect test

Embodiment 1

[0053] A kind of nickel paste for multilayer ceramic capacitor based on gravure coating printing, its raw material comprises following mass parts material:

[0054] 40-50 parts of nickel powder;

[0055] 5-12 parts of ceramic powder;

[0056] 0.1-2 parts of dispersant;

[0057] 0.1 to 5 parts of plasticizer;

[0058] And glue 22.1~43 parts;

[0059] Wherein, described glue comprises following mass ratio material:

[0060] Organic solvent: resin: thixotropic agent = 80-98: 2-4: 0.1-0.2.

[0061] Described organic solvent is the mixture of one or more in terpineol, dihydroabietyl acetate, terpineol or ethylene glycol ethyl ether acetate, and described organic solvent and described dispersant, described enhancer The plasticizer has good compatibility with the resin.

[0062] The resin is one or a mixture of ethyl cellulose, polyvinyl butyral or polyurethane resin.

[0063] The ceramic powder is barium titanate with a perovskite structure, and its specific surface area is 4...

Embodiment 2

[0069] A method for preparing nickel paste for multilayer ceramic capacitors based on gravure coating printing, has the following steps:

[0070] S1. Grinding of ceramic powder:

[0071] The ceramic powder is barium titanate with perovskite structure, prepare 100g;

[0072] The ceramic powder is ball milled at a ball milling speed of 2500-3000rpm / min until the specific surface area of ​​the ceramic powder is less than or equal to 15m 2 / g and the particle size is uniform, the ball mill is cooled by external cooling water;

[0073] S2, preparation of glue:

[0074] The organic solvent is 300g of terpineol, the resin is 13g of ethyl cellulose, and the thixotropic agent is 0.6g of polyamide wax;

[0075] Mix and stir the organic solvent, the resin and the thixotropic agent, the stirring time is 6 hours to 8 hours, the stirring temperature is 60-80°C, the stirring speed is 800-1200rpm / min, and the obtained mixture is added Pressure filtration, the filtration pressure is 2-4psi...

Embodiment 3

[0086] A method for preparing nickel paste for multilayer ceramic capacitors based on gravure coating printing, has the following steps:

[0087] S1. Grinding of ceramic powder:

[0088] Ceramic powder is barium titanate with perovskite structure, prepare 110g;

[0089] The ceramic powder is ball milled at a ball milling speed of 2500-3000rpm / min until the specific surface area of ​​the ceramic powder is less than or equal to 15m 2 / g and the particle size is uniform, the ball mill is cooled by external cooling water;

[0090] S2, preparation of glue:

[0091] The organic solvent is 331g of terpineol, the resin is 11.7g of ethyl cellulose, and the thixotropic agent is 0.5g of polyamide wax;

[0092] Mix and stir the organic solvent, the resin and the thixotropic agent, the stirring time is 6 hours to 8 hours, the stirring temperature is 60-80°C, the stirring speed is 800-1200rpm / min, and the obtained mixture is added Pressure filtration, the filtration pressure is 2-4psi, ...

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Abstract

The invention discloses nickel paste for a multilayer ceramic capacitor based on gravure coating printing and an application of the nickel paste; the nickel paste for the multilayer ceramic capacitorbased on gravure coating printing is characterized by comprising the following raw materials in parts by mass: 40-50 parts of nickel powder, 5-12 parts of ceramic powder, 0.1-2 parts of dispersing agent, 0.1-5 parts of plasticizer and 22.1-43 parts of glue, wherein the glue comprises the following substances of an organic solvent, resin and a thixotropic agent at the mass ratio of 80-98:2-4:0.1-0.2. The nickel paste has high rheological property and thixotropy, the requirements of the market are met, high-quality conductive paste can be obtained, and the pattern is good after being printed, and the nickel paste is free of burrs and the like; and after sintering, the continuity is high, and the yield is high, so that the production efficiency is improved, and the production cost is lowered.

Description

technical field [0001] The invention relates to a conductive paste and its application, in particular to a nickel paste for a multilayer ceramic capacitor based on gravure coating and printing and its application. Background technique [0002] Multilayer ceramic capacitors (Multilayer Ceramic Capacitor, MLCC) is the most widely used type of chip components, with the characteristics of small size, high specific capacitance, and high precision, effectively reducing the size of electronic information terminal products (especially portable products) Volume and weight, improve product reliability. At present, the next-generation printing technology for the production of multilayer ceramic capacitors is gravure coating printing technology. Compared with the traditional screen printing process, gravure coating printing technology has the characteristics of good printing pattern, thin thickness and high efficiency. However, the matching conductive paste needs good rheological prope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/30H01G4/12C09D11/52
CPCC09D11/52H01G4/1209H01G4/30
Inventor 李岩王辉陈将俊
Owner 大连海外华昇电子科技有限公司
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