CN102995100A - Graphite electrode reverse electrification impurity removal device for electronic aluminum foil corrosion and control method thereof - Google Patents
Graphite electrode reverse electrification impurity removal device for electronic aluminum foil corrosion and control method thereof Download PDFInfo
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- CN102995100A CN102995100A CN2012104933136A CN201210493313A CN102995100A CN 102995100 A CN102995100 A CN 102995100A CN 2012104933136 A CN2012104933136 A CN 2012104933136A CN 201210493313 A CN201210493313 A CN 201210493313A CN 102995100 A CN102995100 A CN 102995100A
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Abstract
The invention discloses a graphite electrode reverse electrification impurity removal device for electronic aluminum foil corrosion and a control method thereof. The graphite electrode is reversely electrified, namely a power anode is connected with the graphite electrode and a power cathode is connected with an aluminum foil through a conductive roller, so that the impurity ions adsorbed by the graphite electrode are desorbed. The bath solution is 0.4-1.4mol/L hydrochloric acid solution, the current is 100-600A, the treatment time is 2-10 minutes, and the electrolyzed power supply control mode is in a current stabilizing mode. A defective corrosion foil or a plain foil of which the oil dirt is removed can be used for cleaning the graphite electrode and can be repeatedly used. The method is suitable for all electrochemical corrosion tanks of high-pressure electronic aluminum foils, comprising a primary current electrolytic corrosion electrolytic cell and a secondary current electrolytic corrosion electrolytic cell.
Description
Technical field
The present invention relates to a kind of electronic aluminum foil corrosion Graphite Electrodes removal of impurity technical field, particularly a kind of electronic aluminum foil corrosion oppositely powers up deimpurity device and control method thereof with Graphite Electrodes, is applicable to the Cress of corrosion Graphite Electrodes in the mesohigh electric aluminum foil industry.
Background technology
The electrolytic corrosion process of mesohigh electric aluminum foil, normal power-up mode are that positive source connects conductive rollers, and conductive rollers contacts with aluminium foil; Negative pole connects Graphite Electrodes.Aluminium foil is anode in the electrolyzer, and losing electronics, to change aluminum ion into oxidized; Graphite Electrodes is negative electrode, and hydrogen ion obtains electronics at the Graphite Electrodes place and is reduced generation hydrogen, electrochemical reaction that aluminium foil is corroded that Here it is.Because tank liquor is introduced foreign ion unavoidably in the production process, such as positively charged ions such as cupric ion, ferrous ion, iron ion, zine ion and lead ions, they are constantly adsorbed by Graphite Electrodes to movable cathode.When but the Graphite Electrodes adsorptive power reaches capacity, these foreign ions will remain in the tank liquor, not only pollute etched foil, and hinder normally carrying out of corrosion reaction.The microbattery reaction is being carried out on the etched foil surface in a large number, and it is excessive to cause easily corrosion, and the etched foil bending is low, and attenuate is serious, and it is low to weigh, and brings disadvantageous effect to production run.Therefore, it is necessary the foreign ion of Graphite Electrodes absorption being processed.
Summary of the invention
The present invention is directed to continuous rising of corrosion tank liquor impurity concentration and cause the defective of etched foil degradation, a kind of cleaning method of removing Graphite Electrodes impurity that oppositely powers up is provided.
The present invention realizes that by following technological line a kind of method of removing Graphite Electrodes impurity is characterized in that, by oppositely powering up, makes the foreign ion desorption of Graphite Electrodes absorption.
A kind of electronic aluminum foil corrosion oppositely powers up deimpurity device with Graphite Electrodes, comprise aluminium foil, the conduction rod, Graphite Electrodes and oppositely add electrolyser, described Graphite Electrodes connects the positive pole of electrolysis power, and conductive rollers connects the negative pole of electrolysis power, conductive rollers and aluminium foil close contact, oppositely adding in the electrolyser, aluminium foil is negative electrode, and Graphite Electrodes is anode.
Described electronic aluminum foil corrosion oppositely powers up the control method of deimpurity device with Graphite Electrodes, oppositely to add in the electrolyser described, take the 0.4-1.4mol/L hydrochloric acid soln as tank liquor, electric current 100-600A, treatment time 2-10min, the electrolysis power control mode is the current stabilization pattern.
Described aluminium foil adopts substandard products etched foil or the light paper tinsel of wipe oil, and all can reuse.
Oppositely power up the whole galvanic corrosion grooves that are applicable to mesohigh electronic aluminum foil corrosion technique, contain dc electrolysis etching tank, secondary dc electrolysis etching tank and three dc electrolysis etching tanks etc.
The present invention is directed to the high problem that causes the etched foil degradation of Graphite Electrodes absorption foreign matter content, first passage oppositely powers up, and tank liquor is selected the 0.4-1.4mol/L hydrochloric acid soln, and the recycling aluminium foil, and Graphite Electrodes is processed.After the Graphite Electrodes removal of impurity cleaning, can reduce the excessive situation of corrosion that occurs, the raising etched foil improves paper tinsel face outward appearance than electric capacity, and then saves cost, increases productivity.
Description of drawings
Fig. 1 is electronic aluminum foil corrosion of the present invention oppositely powers up deimpurity device with Graphite Electrodes structural representation.
Being labeled as among Fig. 1: aluminium foil 1, conduction rod 2, Graphite Electrodes 3 oppositely adds electrolyser 4.
Embodiment
With Comparative Examples technical scheme of the present invention is described further by the following examples.
Comparative Examples 1
The production-line technique flow process is foil → pre-treatment → washing → one time → three dc electrolysis corrosion → washing → drying → foil closings of dc electrolysis corrosion → washing → secondary dc electrolysis corrosion → washing.
One time dc electrolysis corrosion tank liquor is sulfuric acid and hydrochloric acid mixed solution, chlorine ion concentration 0.5mol/L, sulfate ion concentration 7.5mol/L, aluminium ion concentration 0.8mol/L, 73.5 ℃ of temperature, electric current 7000A.
Secondary dc electrolysis corrosion tank liquor is nitric acid system, nitrate ion concentration 1.9mol/L, hydrogen ion concentration 0.7mol/L, aluminium ion concentration 1.2mol/L, temperature 70 C, electric current 11000A.
Three times dc electrolysis corrosion tank liquor is hydrochloric acid system, chlorine ion concentration 1mol/L, hydrogen ion concentration 0.7mol/L, aluminium ion concentration 0.3mol/L, 82 ℃ of temperature, electric current 500A.
Embodiment 1
As shown in Figure 1, electronic aluminum foil corrosion of the present invention oppositely powers up deimpurity device with Graphite Electrodes, comprise aluminium foil 1, conduction rod 2, Graphite Electrodes 3 and oppositely add electrolyser 4, concrete structure and mode of connection are: described Graphite Electrodes 3 connects the positive pole of electrolysis power, conductive rollers 2 connects the negative pole of electrolysis power, and conductive rollers 2 and aluminium foil 1 close contact are within oppositely adding electrolyser 4, aluminium foil 1 is negative electrode, and Graphite Electrodes 3 is anode.
Described aluminium foil adopts substandard products etched foil or the light paper tinsel of wipe oil.
Embodiment 2
Described electronic aluminum foil corrosion oppositely powers up the control method of deimpurity device with Graphite Electrodes, comprises the steps:
By oppositely powering up 100A, 2min, the technical qualification of tank liquor concentration 0.4mol/L hydrochloric acid, first to once, secondary and three dc electrolysis etching tank Graphite Electrodess all oppositely power up removal of impurity cleaning.Technical process is constant, needn't heat up or cooling to tank liquor.
Venting is processed and is used hydrochloric acid soln, replaces with normal production tank liquor.
Next move embodiment 1, each processing condition and the Comparative Examples 1 of employing all are consistent.
According to China electron trade standard SJ/T 11140-1997 electrode foil for aluminum electrolytic capacitors, test etched foil performance.Wherein, be that etched foil is through obtaining under the 520V formation disposition than capacitance data.
Embodiment 3
Continuous production was observed paper tinsel sample electrical property and is progressively descended after running for some time, near the level of Comparative Examples 1, and concentration of hydrochloric acid 0.7mol/L, 600A processes 10min.
Embodiment 4
After paper tinsel sample electrical property descended, oppositely powering up the groove tank liquor was 1.0mol/L hydrochloric acid, powers up 500A, processed 4min.
Embodiment 5
Paper tinsel sample electrical property drops near Comparative Examples 1, carries out 300A, 2min and oppositely powers up, and tank liquor is 1.4mol/L hydrochloric acid.
Following table combines the paper tinsel sample performance data of Comparative Examples 1, embodiment 1, embodiment 2, embodiment 3, embodiment 4 and embodiment 5.
As seen from the above table, after employing the present invention oppositely powered up the removal of impurity to Graphite Electrodes, etched foil improved 4.7%-6.4% than electric capacity, weighed and improved 0.87-0.95g/500cm
2, bending improves 2-3 returns, and thickness improves 4.8-5.2 μ m.And embodiment 2 etched foil outward appearances are improved very large, the major defects such as speckle that do not exist Comparative Examples 1 to exist.
Claims (3)
1. an electronic aluminum foil corrosion oppositely powers up deimpurity device with Graphite Electrodes, it is characterized in that, comprise aluminium foil, conduction rod, Graphite Electrodes and oppositely add electrolyser, described Graphite Electrodes connects the positive pole of electrolysis power, conductive rollers connects the negative pole of electrolysis power, and conductive rollers and aluminium foil close contact are oppositely adding in the electrolyser, aluminium foil is negative electrode, and Graphite Electrodes is anode.
2. electronic aluminum foil corrosion according to claim 1 oppositely powers up the control method of deimpurity device with Graphite Electrodes, it is characterized in that, oppositely add in the electrolyser described, take the 0.4-1.4mol/L hydrochloric acid soln as tank liquor, electric current 100-600A, treatment time 2-10min, the electrolysis power control mode is the current stabilization pattern.
3. electronic aluminum foil corrosion according to claim 1 oppositely powers up the control method of deimpurity device with Graphite Electrodes, it is characterized in that, described aluminium foil adopts substandard products etched foil or the light paper tinsel of wipe oil.
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| CN2012104933136A CN102995100A (en) | 2012-11-28 | 2012-11-28 | Graphite electrode reverse electrification impurity removal device for electronic aluminum foil corrosion and control method thereof |
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| CN2012104933136A CN102995100A (en) | 2012-11-28 | 2012-11-28 | Graphite electrode reverse electrification impurity removal device for electronic aluminum foil corrosion and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716358A (en) * | 2013-12-13 | 2015-06-17 | 中国科学院大连化学物理研究所 | Purification method of graphite material |
| CN109521077A (en) * | 2018-11-13 | 2019-03-26 | 国电南瑞科技股份有限公司 | A kind of two-wave interpretation formula online Analysis Apparatus of Permanganate Index titration end-point instruction device |
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| JPS62127500A (en) * | 1985-11-26 | 1987-06-09 | Fuji Photo Film Co Ltd | Electrolyzing method and apparatus |
| CN101034628A (en) * | 2006-12-22 | 2007-09-12 | 东莞市东阳光电容器有限公司 | Making method for low-voltage anode foil |
| CN101532162A (en) * | 2009-03-16 | 2009-09-16 | 扬州宏远电子有限公司 | Corrosion technology for anode foil for extra-high voltage aluminum electrolytic capacitor |
| CN101724885A (en) * | 2008-10-28 | 2010-06-09 | 昆山东威电镀设备技术有限公司 | Reverse electroplating peeling hung recovery tank |
| CN102013334A (en) * | 2010-09-26 | 2011-04-13 | 广西贺州市桂东电子科技有限责任公司 | Power supplying method for capacitor anode aluminum foil corrosion and device thereof |
| CN202898591U (en) * | 2012-11-28 | 2013-04-24 | 广西贺州市桂东电子科技有限责任公司 | Graphite electrode reverse power-up impurity removing device for electronic aluminum foil etching |
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2012
- 2012-11-28 CN CN2012104933136A patent/CN102995100A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62127500A (en) * | 1985-11-26 | 1987-06-09 | Fuji Photo Film Co Ltd | Electrolyzing method and apparatus |
| CN101034628A (en) * | 2006-12-22 | 2007-09-12 | 东莞市东阳光电容器有限公司 | Making method for low-voltage anode foil |
| CN101724885A (en) * | 2008-10-28 | 2010-06-09 | 昆山东威电镀设备技术有限公司 | Reverse electroplating peeling hung recovery tank |
| CN101532162A (en) * | 2009-03-16 | 2009-09-16 | 扬州宏远电子有限公司 | Corrosion technology for anode foil for extra-high voltage aluminum electrolytic capacitor |
| CN102013334A (en) * | 2010-09-26 | 2011-04-13 | 广西贺州市桂东电子科技有限责任公司 | Power supplying method for capacitor anode aluminum foil corrosion and device thereof |
| CN202898591U (en) * | 2012-11-28 | 2013-04-24 | 广西贺州市桂东电子科技有限责任公司 | Graphite electrode reverse power-up impurity removing device for electronic aluminum foil etching |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104716358A (en) * | 2013-12-13 | 2015-06-17 | 中国科学院大连化学物理研究所 | Purification method of graphite material |
| CN104716358B (en) * | 2013-12-13 | 2018-04-24 | 中国科学院大连化学物理研究所 | A kind of purification method of graphite material |
| CN109521077A (en) * | 2018-11-13 | 2019-03-26 | 国电南瑞科技股份有限公司 | A kind of two-wave interpretation formula online Analysis Apparatus of Permanganate Index titration end-point instruction device |
| WO2020098361A1 (en) * | 2018-11-13 | 2020-05-22 | 国电南瑞科技股份有限公司 | Titration end point indicating device for permanganate index on-line analyzer of double platinum electrode type |
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Application publication date: 20130327 |