CN101748462A - Formation method of anode aluminum foil for high-voltage aluminum electrolytic capacitor - Google Patents
Formation method of anode aluminum foil for high-voltage aluminum electrolytic capacitor Download PDFInfo
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Abstract
The invention relates to a formation process of an anode aluminum foil for a high-voltage aluminum electrolytic capacitor, which comprises the following steps sequentially: pretreatment, 100-240V first order formation treatment, 300-450V second order formation treatment, 400-600V third order formation treatment, 500-620V fourth order formation treatment, depolarizing treatment and drying, wherein in the pretreatment step, the aluminum foil after erosion pore expanding is put in de-ionized water of 92-100 DEG C for soaking treatment, and the treating solution of the formation treatment is a mixed water solution of some materials of boric acid, phosphate and ammonium pentaborate. The invention has the beneficial effects that the process is practical and can improve the volume of the anode aluminum foil by 8-10% for the high-voltage aluminum electrolytic capacitor with voltage of 400-650V.
Description
Background technology
Anode aluminum foil for high-voltage aluminum electrolytic capacitor is to make by the high-purity aluminum foil behind the corrosion expansion face being carried out a series of chemical synthesis technologies such as electrochemical anodic oxidation, before this, the chemical synthesis technology flow process of anode aluminum foil for high-voltage aluminum electrolytic capacitor is: the high-purity aluminum foil that at first will corrode behind the expansion face places 92-100 ℃ deionized water to soak 20-30 minute, then carry out the 100-240V one-level and change into processing, for aluminium foil places concentration is the aqueous solution of the ammonium pentaborate of the boric acid of 1-10% and 0.1-1%, at 80-95 ℃ of temperature, 100-240V voltage and 50-200mA/cm
2Changed under the condition of electric current 15-20 minute; Then carrying out the 300-450V secondary and change into processing, is the aqueous solution of the ammonium pentaborate of the boric acid of 1-10% and 0.1-1% for aluminium foil places concentration, at 80-95 ℃ of temperature, 300-450V voltage and 50-200mA/cm
2Changed under the condition of electric current 15-20 minute; Then carrying out 400-600V and change into processing for three grades, is the aqueous solution of the ammonium pentaborate of the boric acid of 1-10% and 0.05-1% for aluminium foil places concentration, at 80-95 ℃ of temperature, 400-600V voltage and 50-200mA/cm
2Changed under the condition of electric current 20-30 minute; Carrying out the 500-620V level Four again and change into processing, is the aqueous solution of the ammonium pentaborate of the boric acid of 1-10% and 0.05-1% for aluminium foil places concentration, at 80-95 ℃ of temperature, 500-620V voltage and 50-200mA/cm
2Changed under the current condition 35-50 minute; Carrying out depolarize then and handle, is that phosphate aqueous solution 50-70 ℃ of 5-7% soaked 1-2 minute for aluminium foil places concentration; Take out at last, aluminium foil is placed oven dry in 1-5 minute down at 50-60 ℃.With the aluminium electrolutic capacitor anode aluminium foil that this technology is made, capacity is less.
Summary of the invention
The objective of the invention is provides a kind of chemical synthesizing method of anode aluminum foil for high-voltage aluminum electrolytic capacitor in order to overcome above-mentioned technology weak point, the aluminium electrolutic capacitor anode aluminium foil of making in this way, and capacity is bigger.
The object of the present invention is achieved like this: a kind of chemical synthesizing method of anode aluminum foil for high-voltage aluminum electrolytic capacitor may further comprise the steps:
(1) at first will corrode high-purity aluminum foil behind the expansion face places 92-100 ℃ deionized water to soak to carry out the 100-240V one-level after 15-30 minute and changes into processing, being about to aluminium foil, to place concentration be the boric acid of 1-10%, the phosphoric acid salt of 0.1-1% and the mixed aqueous solution of ammonium pentaborate of 0.1-1%, at 80-95 ℃ of temperature, 100-240V voltage and 50-200mA/cm
2Changed under the condition of electric current 15-20 minute, and obtained the one-level formed aluminum foil;
(2) the 300-450V secondary changes into processing: it is the boric acid of 1-10%, the phosphoric acid salt of 0.1-1% and the mixed aqueous solution of ammonium pentaborate of 0.1-1% that the aluminium foil that one-level is changed into places concentration, at 80-95 ℃ of temperature, 300-450V voltage and 50-200mA/cm
2Changed under the condition of electric current 15-20 minute, and obtained the secondary formed aluminum foil;
(3) 400-600V changes into processing for three grades: it is the boric acid of 1-10% and the mixed aqueous solution of ammonium pentaborate of 0.05-1% that the aluminium foil that secondary is changed into places concentration, at 80-95 ℃ of temperature, 400-600V voltage and 50-200mA/cm
2Changed under the condition of electric current 20-30 minute, and obtained three grades of formed aluminum foils;
(4) the 500-620V level Four changes into processing, and it is the boric acid of 1-10% and the mixed aqueous solution of ammonium pentaborate of 0.05-1% that three grades of aluminium foils that change into are placed concentration, at 80-95 ℃ of temperature, 500-620V voltage and 50-200mA/cm
2Changed under the current condition 35-50 minute; Carry out depolarize then and handle, being about to aluminium foil, to place concentration be that the phosphate aqueous solution controlled temperature of 7-12% is 50-70 ℃, soaked 1-2 minute; Take out at last, aluminium foil is placed oven dry in 5-10 minute down at 80-100 ℃ and is obtained anode aluminum foil for high-voltage aluminum electrolytic capacitor.
The chemical synthesizing method of anode aluminum foil for high-voltage aluminum electrolytic capacitor provided by the invention, the technology practicality can make the capacity of the anode aluminum foil for high-voltage aluminum electrolytic capacitor between the 400-650V voltage improve 8-10%.
Embodiment
Embodiment 1: a kind of chemical synthesizing method of anode aluminum foil for high-voltage aluminum electrolytic capacitor: the purity of the excessive erosion of learning from else's experience expansion face is 99.99% high-purity aluminum foil, place 94 ℃ deionized water to soak 20 minutes, taking-up is placed in the mixed aqueous solution of ammonium pentaborate that concentration is 9% boric acid, 0.3% phosphoric acid salt and 0.6%, at 85 ℃ of temperature, 170V voltage and 100mA/cm
2The condition next stage of electric current changed into 15 minutes; Then aluminium foil being placed concentration is the aqueous solution of the ammonium pentaborate of 9% boric acid, 0.3% phosphoric acid salt and 0.4%, at 85 ℃ of temperature, 350V voltage and 100mA/cm
2Secondary changed into 15 minutes under the condition of electric current; Then to place concentration be the aqueous solution of the ammonium pentaborate of 9% boric acid and 0.1% to aluminium foil, at 85 ℃ of temperature, 540V voltage and 50mA/cm
2The condition of electric current changed into 30 minutes for following three grades; To place concentration be the aqueous solution of the ammonium pentaborate of 9% boric acid and 0.05% to aluminium foil then, at 85 ℃ of temperature, 580V voltage and 50mA/cm
2Level Four changed into 45 minutes under the condition of electric current; To place concentration be that 10% phosphate aqueous solution soaks for 50 ℃ and carried out depolarize in 2 minutes and handle to aluminium foil then; Take out at last, place oven dry in 5 minutes down at 90 ℃.Measure correlation parameter, measurement result sees Table 1.
Embodiment 2: a kind of chemical synthesizing method of anode aluminum foil for high-voltage aluminum electrolytic capacitor: the purity of the excessive erosion of learning from else's experience expansion face is 99.99% high-purity aluminum foil, place 96 ℃ deionized water to soak 30 minutes, taking-up is placed in the mixed aqueous solution of ammonium pentaborate that concentration is 7% boric acid, 0.2% phosphoric acid salt and 0.6%, at 85 ℃ of temperature, 170V voltage and 100mA/cm
2The condition next stage of electric current changed into 15 minutes; Then aluminium foil being placed concentration is the aqueous solution of the ammonium pentaborate of 7% boric acid, 0.2% phosphoric acid salt and 0.4%, at 85 ℃ of temperature, 350V voltage and 100mA/cm
2Secondary changed into 15 minutes under the condition of electric current; Then to place concentration be the aqueous solution of the ammonium pentaborate of 7% boric acid and 0.1% to aluminium foil, at 85 ℃ of temperature, 540V voltage and 50mA/cm
2The condition of electric current changed into 30 minutes for following three grades; To place concentration be the aqueous solution of the ammonium pentaborate of 7% boric acid and 0.05% to aluminium foil then, at 85 ℃ of temperature, 580V voltage and 50mA/cm
2Level Four changed into 45 minutes under the condition of electric current; To place concentration be that 8% phosphate aqueous solution soaks for 60 ℃ and carried out depolarize in 2 minutes and handle to aluminium foil then; Take out at last, place oven dry in 5 minutes down at 100 ℃.Measure correlation parameter, measurement result sees Table 1.
Comparative example 1: the chemical synthesizing method of anode aluminum foil for high-voltage aluminum electrolytic capacitor: the purity of the excessive erosion of learning from else's experience expansion face is 99.99% high-purity aluminum foil, place 95 ℃ deionized water to soak 26 minutes, taking-up is placed in the aqueous solution of ammonium pentaborate that concentration is 7% boric acid and 0.6%, at 85 ℃ of temperature, 170V voltage and 100mA/cm
2The condition next stage of electric current changed into 15 minutes; Then aluminium foil being placed concentration is the aqueous solution of the ammonium pentaborate of 7% boric acid and 0.4%, at 85 ℃ of temperature, 350V voltage and 100mA/cm
2Secondary changed into 15 minutes under the condition of electric current; Then to place concentration be the aqueous solution of the ammonium pentaborate of 7% boric acid and 0.1% to aluminium foil, at 85 ℃ of temperature, 540V voltage and 50mA/cm
2The condition of electric current changed into 30 minutes for following three grades; To place concentration be the aqueous solution of the ammonium pentaborate of 7% boric acid and 0.05% to aluminium foil then, at 85 ℃ of temperature, 580V voltage and 50mA/cm
2Level Four changed into 45 minutes under the condition of electric current; To place concentration be that 5% phosphate aqueous solution soaks for 50 ℃ and carried out depolarize in 2 minutes and handle to aluminium foil then; Take out at last, place oven dry in 20 minutes down at 70 ℃.Measure correlation parameter, measurement result sees Table 1.
The anode aluminium foil performance comparison sheet table 1 that the embodiment of the invention and comparative example are made
| Item compared | Withstand voltage | The capacity ratio |
| Embodiment 1 | 599V | 108% |
| Embodiment 2 | 597V | 110% |
| Comparative example 1 | 597V | 100% |
As seen from Table 1, the relatively routine raising that 8-10% is arranged of capacity illustrates that the anode aluminum foil for high-voltage aluminum electrolytic capacitor capacity of the present invention's preparation is relatively large among the embodiment 1-2.
Claims (1)
1. the chemical synthesizing method of an anode aluminum foil for high-voltage aluminum electrolytic capacitor may further comprise the steps:
(1) at first will corrode high-purity aluminum foil behind the expansion face places 92-100 ℃ deionized water to soak to carry out the 100-240V one-level after 15-30 minute and changes into processing, being about to aluminium foil, to place concentration be the boric acid of 1-10%, the phosphoric acid salt of 0.1-1% and the mixed aqueous solution of ammonium pentaborate of 0.1-1%, at 80-95 ℃ of temperature, 100-240V voltage and 50-200mA/cm
2Changed under the condition of electric current 15-20 minute, and obtained the one-level formed aluminum foil;
(2) the 300-450V secondary changes into processing: it is the boric acid of 1-10%, the phosphoric acid salt of 0.1-1% and the mixed aqueous solution of ammonium pentaborate of 0.1-1% that the aluminium foil that one-level is changed into places concentration, at 80-95 ℃ of temperature, 300-450V voltage and 50-200mA/cm
2Changed under the condition of electric current 15-20 minute, and obtained the secondary formed aluminum foil;
(3) 400-600V changes into processing for three grades: it is the boric acid of 1-10% and the mixed aqueous solution of ammonium pentaborate of 0.05-1% that the aluminium foil that secondary is changed into places concentration, at 80-95 ℃ of temperature, 400-600V voltage and 50-200mA/cm
2Changed under the condition of electric current 20-30 minute, and obtained three grades of formed aluminum foils;
(4) the 500-620V level Four changes into processing, and it is the boric acid of 1-10% and the mixed aqueous solution of ammonium pentaborate of 0.05-1% that three grades of aluminium foils that change into are placed concentration, at 80-95 ℃ of temperature, 500-620V voltage and 50-200mA/cm
2Changed under the current condition 35-50 minute; Carry out depolarize then and handle, being about to aluminium foil, to place concentration be that the phosphate aqueous solution controlled temperature of 7-12% is 50-70 ℃, soaked 1-2 minute; Take out at last, aluminium foil is placed oven dry in 5-10 minute down at 80-100 ℃ and is obtained anode aluminum foil for high-voltage aluminum electrolytic capacitor.
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| CN 201010128134 CN101748462A (en) | 2010-03-20 | 2010-03-20 | Formation method of anode aluminum foil for high-voltage aluminum electrolytic capacitor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964257A (en) * | 2010-11-04 | 2011-02-02 | 南通华冠电子科技有限公司 | Ultrahigh-pressure anode aluminum foil formation method |
| CN102610396A (en) * | 2011-01-20 | 2012-07-25 | 四川雅安艾华电极箔制造有限公司 | Manufacturing method for formed foil of electrolytic capacitor of energy-saving lamp |
| CN104109890A (en) * | 2014-07-11 | 2014-10-22 | 四川石棉华瑞电子有限公司 | Formation line tank liquor preheating and consumption-reduction system and formation line tank liquor preheating and consumption-reduction method |
| CN105405658A (en) * | 2015-11-30 | 2016-03-16 | 新疆西部宏远电子有限公司 | Pure inorganic acid formation process for positive electrode foil for high-voltage bolt type aluminium electrolytic capacitor |
| CN110016702A (en) * | 2019-04-18 | 2019-07-16 | 宜都东阳光化成箔有限公司 | A kind of aluminium electrolutic capacitor super-pressure Waste Acid From Hua Cheng Foil chemical synthesis technology |
| CN110055571A (en) * | 2019-04-18 | 2019-07-26 | 宜都东阳光化成箔有限公司 | A kind of preprocessing solution and chemical synthesis technology improving aluminium electrolutic capacitor medium-high pressure chemical foil capacity |
| CN112768245A (en) * | 2020-12-29 | 2021-05-07 | 荥经县旭光电子有限公司 | Ultrahigh-pressure and multistage formed foil preparation method and formed foil |
| CN113897651A (en) * | 2021-08-23 | 2022-01-07 | 南通南辉电子材料股份有限公司 | Method for manufacturing electrode foil for aluminum electrolytic capacitor with wide temperature, low impedance, shrinkage, large ripple current resistance and long service life |
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| CN1366097A (en) * | 2001-01-19 | 2002-08-28 | 江苏中联科技集团有限公司 | Four-stage manufacturing method of electrode foil for medium-high voltage aluminum electrolytic capacitor |
| CN1892936A (en) * | 2006-04-05 | 2007-01-10 | 江苏中联科技集团有限公司 | Formation method for reducing leakage current of electrode foil for aluminum electrolytic capacitor |
| JP2007273903A (en) * | 2006-03-31 | 2007-10-18 | Nichicon Corp | Method for fabricating electrode foil for electrolytic capacitor |
| CN101110298A (en) * | 2006-12-22 | 2008-01-23 | 东莞市东阳光电容器有限公司 | Method for manufacturing positive electrode aluminum foil of electrolytic capacitor |
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2010
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| JP2007273903A (en) * | 2006-03-31 | 2007-10-18 | Nichicon Corp | Method for fabricating electrode foil for electrolytic capacitor |
| CN1892936A (en) * | 2006-04-05 | 2007-01-10 | 江苏中联科技集团有限公司 | Formation method for reducing leakage current of electrode foil for aluminum electrolytic capacitor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964257A (en) * | 2010-11-04 | 2011-02-02 | 南通华冠电子科技有限公司 | Ultrahigh-pressure anode aluminum foil formation method |
| CN102610396A (en) * | 2011-01-20 | 2012-07-25 | 四川雅安艾华电极箔制造有限公司 | Manufacturing method for formed foil of electrolytic capacitor of energy-saving lamp |
| CN102610396B (en) * | 2011-01-20 | 2015-04-01 | 四川雅安艾华电极箔制造有限公司 | Manufacturing method for formed foil of electrolytic capacitor of energy-saving lamp |
| CN104109890A (en) * | 2014-07-11 | 2014-10-22 | 四川石棉华瑞电子有限公司 | Formation line tank liquor preheating and consumption-reduction system and formation line tank liquor preheating and consumption-reduction method |
| CN104109890B (en) * | 2014-07-11 | 2017-04-12 | 四川石棉华瑞电子有限公司 | Formation line tank liquor preheating and consumption-reduction system and formation line tank liquor preheating and consumption-reduction method |
| CN105405658A (en) * | 2015-11-30 | 2016-03-16 | 新疆西部宏远电子有限公司 | Pure inorganic acid formation process for positive electrode foil for high-voltage bolt type aluminium electrolytic capacitor |
| CN110016702A (en) * | 2019-04-18 | 2019-07-16 | 宜都东阳光化成箔有限公司 | A kind of aluminium electrolutic capacitor super-pressure Waste Acid From Hua Cheng Foil chemical synthesis technology |
| CN110055571A (en) * | 2019-04-18 | 2019-07-26 | 宜都东阳光化成箔有限公司 | A kind of preprocessing solution and chemical synthesis technology improving aluminium electrolutic capacitor medium-high pressure chemical foil capacity |
| CN110016702B (en) * | 2019-04-18 | 2020-12-11 | 内蒙古乌兰察布东阳光化成箔有限公司 | Ultrahigh-voltage foil formation process for aluminum electrolytic capacitor |
| CN112768245A (en) * | 2020-12-29 | 2021-05-07 | 荥经县旭光电子有限公司 | Ultrahigh-pressure and multistage formed foil preparation method and formed foil |
| CN113897651A (en) * | 2021-08-23 | 2022-01-07 | 南通南辉电子材料股份有限公司 | Method for manufacturing electrode foil for aluminum electrolytic capacitor with wide temperature, low impedance, shrinkage, large ripple current resistance and long service life |
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Application publication date: 20100623 |