Preparation of hyperthermia drying wafer capacitance electrode silver plasm

A capacitor electrode, high temperature drying technology, applied in fixed capacitor electrodes, capacitor manufacturing, capacitors and other directions, can solve the problems of easy scratching and falling off of the silver layer, and achieve the effect of simple preparation process and scratch prevention.

Inactive Publication Date: 2008-06-25
宁波元太导电材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sintering process of the silver layer and the peak value of the sintering temperature affect the microstructure of the silver layer and the appearance of the silver layer, and at the same time affect the adhe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Mix 40-60g of 200-type ethyl cellulose, 40-60g of 40-type ethyl cellulose, 80-150g of polyvinyl butyral, and 730-800g of diethylene glycol butyl ether acetate to prepare adhesive ;

[0020] (2) Mix 20-30g of glass frit, 30-40g of bismuth oxide, add 900-950g of ultra-fine silver powder, and mix it into powder, after stirring, add into a ball mill and mill for 2-3 hours;

[0021] (3) mix terpineol 400-500g, diglycerol ethyl ether 500-600g, prepare diluent;

[0022] (4) Mix adhesive and powder, pass through a three-roll mill until the fineness is less than 10 μm, add diluent to make silver paste, stir for 1 hour, and adjust viscosity with a small amount of diluent.

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PUM

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Abstract

The invention relates to a preparation method of low temperature baking disc capacitance electrode silver paste, which comprises the steps that: firstly, 200 model ethyl cellulose, 40 model ethyl cellulose, polyvinyl butyral, diethylene glycol dibutyl ether acetate are mixed to prepare an adhesive; secondly, super fine silver powder, frit and bismuth oxide are mixed to prepare a powder material; thirdly, terpilenol and diethylene butyl alcohol ethylether are mixed to prepare a thinning agent; fourthly, the adhesive and the power material are mixed, the fineness is adjusted through a trio mill, the thinning agent is added, and then the silver paste is prepared. The preparation process is simple, the prepared silver paste can prevent the defects that the silver layer is scratched and deciduous under the low temperature and baking conditions, ensure that the volatilization of the solvent during the low temperature and baking process is uniform, the air bubble is not existent, and the invention is suitable for the electrode solver paste under the high temperature (higher than 300 DEG C) and baking conditions.

Description

technical field [0001] The invention belongs to a method for preparing silver paste for a disc capacitor electrode, in particular to a method for preparing silver paste for a disc capacitor electrode with high-temperature drying. Background technique [0002] High-temperature silver paste is a type of paste that has attracted much attention in the electronic paste industry. It is widely used in the manufacture of electronic components such as capacitors and potentiometers, as well as electrical components such as high-voltage and high-frequency porcelain parts. It integrates chemical industry, metallurgy and electronics. functions and structural materials. High temperature silver paste is mainly composed of three parts: functional phase (silver powder), organic carrier and glass phase. [0003] With the rapid development of the electronics industry, the requirements for the quality of electronic components are getting higher and higher, and the requirements for high-tempera...

Claims

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Application Information

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IPC IPC(8): H01G13/00H01G4/005H01G5/011H01G9/042
Inventor 许明勇
Owner 宁波元太导电材料科技有限公司
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