Copper electrode slurry material and manufacturing method thereof

A copper electrode and paste technology, applied in the direction of fixed capacitor electrodes, circuits, capacitors, etc., can solve the problems of electrical performance degradation and high cost of sensitive electronic components, achieve simplified sintering furnace structure and control system, good solderability, The effect of excellent solder resistance

Active Publication Date: 2008-03-05
GUANGDONG FENGHUA ADVANCED TECH HLDG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention needs to solve the problems of rapid electrical performance degradation and high cost of sensitive e

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Measure 2wt% of ethyl cellulose and 18wt% of ethanol, mix the ethyl cellulose and ethanol evenly by conventional dispersing and stirring, and then heat the mixture to a temperature of 60°C to 80°C until the ethyl cellulose is completely dissolved in ethanol Get the viscosity of 10-70KCP value in the medium, and then remove the impurities in the production through the 300-400 mesh filter cloth or filter screen, and prepare the organic carrier;

[0016] Measure the glass powder of 3wt%, the percentage by weight of each compound in the glass powder is ZnO 3.4wt%, B 2 o 3 4.07wt%, SiO 2 6.52wt%, Bi 2 o 3 79.72wt%, Al 2 o 3 2.55wt%, SrO 1.26wt%, BaO 2.48wt%, Cu 5wt% used as a sintering additive; add the glass powder to the aforementioned organic carrier, and mix it into a pre-dispersed mixture by conventional stirring equipment;

[0017] Take 60wt% of nodular copper and 15wt% of sheet copper and add them to the pre-dispersed mixture respectively, and obtain the ear...

Embodiment 2

[0020] Measure 2wt% of ethyl cellulose and 18wt% of ethanol, mix the ethyl cellulose and ethanol evenly by conventional dispersing and stirring, and then heat the mixture to a temperature of 60°C to 80°C until the ethyl cellulose is completely dissolved in ethanol Get the viscosity of 10-70KCP value in the medium, and then remove the impurities in the production through the 300-400 mesh filter cloth or filter screen, and prepare the organic carrier;

[0021] Measure the glass powder of 3wt%, the weight percentage of each compound in the glass powder is ZnO 5.93wt%, B 2 o 3 1.19 wt%, SiO 2 4.64wt%, Bi 2 o 3 81.89wt%, Al 2 o 3 4.37wt%, SrO 0.8wt%, BaO 1.18wt%, Al 6wt% used as a sintering additive; add the glass powder to the aforementioned organic carrier, and mix it into a pre-dispersed mixture by conventional stirring equipment;

[0022] Take 50wt% of nodular copper and 25wt% of sheet copper and add them to the pre-dispersed mixture respectively, and obtain the early...

Embodiment 3

[0025] Measure 1.5wt% ethyl cellulose and 20.5wt% ethanol, mix the ethyl cellulose and ethanol evenly by conventional dispersion and stirring, and then heat the mixture to a temperature of 60°C to 80°C until the ethylcellulose is completely dissolved Obtain a viscosity of 10-70KCP value in ethanol, and then remove impurities in production through a 300-400 mesh filter cloth or filter screen to prepare an organic carrier;

[0026] Measure the glass powder of 3wt%, the weight percentage of each compound in the glass powder is ZnO 7.04wt%, B 2 o 3 1wt%, SiO 2 5.63wt%, Bi 2 o 3 84.02wt%, Al 2 o 3 1.1wt%, SrO 1.2wt%, Zn 7wt% used as a sintering additive; add the glass powder to the aforementioned organic vehicle, and mix it into a pre-dispersed mixture by conventional stirring equipment;

[0027] Take 50wt% of nodular copper and 25wt% of sheet copper and add them to the pre-dispersed mixture respectively, and obtain the early-stage slurry through conventional dispersing a...

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Abstract

This invention discloses a kind of slurry of copper electrodes and a manufacturing method, in which, the weight percentage of the slurry includes: Ball copper: 25-64%, sheet copper: 10-40%, glass powder: 2-8%, macromolecular resin: 0.5-6% and solvent: 16-26%, in which, the slurry does not contain harmful materials of Pb, Cd and hexavalent Cr and meets the needs of environment protection, first of all, organic carrier is prepared and then the glass powder is put into the carrier to be mixed and form precursor dispersed mixture, then the balls and sheets are put into the mixture to form copper electrode slurry used in piezoelectric resistors, the sintered copper electrode is good in weld, the anti-welding performance is better than silver electrode and has better adherence than porcelain.

Description

technical field [0001] The invention relates to an electrode paste, in particular to a terminal electrode paste used in the manufacturing process of sensitive electronic components. Background technique [0002] Electrode paste is suitable for electronic components such as resistors and capacitors. In the past, electrode pastes were generally noble metal silver pastes and ohmic pastes. Due to the high price of precious metals, the production process of electrode paste made of such metals is complicated and the production cost is high, and such pastes generally contain harmful substances such as lead Pb, cadmium Cd and hexavalent chromium Cr, which pollute the environment. There are also base metal pastes in the prior art, which are generally used in conventional resistors and capacitors. Chinese patent No. CN1195001 discloses a base metal paste suitable for common electronic components. For sensitive electronic components, due to their sensitive electrical properties, the g...

Claims

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Application Information

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IPC IPC(8): H01B1/02H01C7/10H01G4/008H01G9/042
Inventor 孟淑媛安艳江志坚付衣梅张韶鸽
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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