CN102723203A - Preparation method of electrolyte for aluminum electrolytic capacitor - Google Patents
Preparation method of electrolyte for aluminum electrolytic capacitor Download PDFInfo
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- CN102723203A CN102723203A CN2012102389710A CN201210238971A CN102723203A CN 102723203 A CN102723203 A CN 102723203A CN 2012102389710 A CN2012102389710 A CN 2012102389710A CN 201210238971 A CN201210238971 A CN 201210238971A CN 102723203 A CN102723203 A CN 102723203A
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Abstract
The invention discloses a preparation method of electrolyte for an aluminum electrolytic capacitor. The electrolyte is prepared from gamma-butyrolactone, glycol, ammonium isosebacic acid, ammonium hydrogen azelate, ammonium hypophosphite and a homemade additive in a mixing ratio of 62:26:2.6:3.9:2.3:3.2; and because of the interaction of the glycol, the gamma-butyrolactone, the ammonium isosebacic acid, the ammonium hydrogen azelate, the ammonium hypophosphite and the homemade additive, the liquidus temperature, the resistivity, the hydration resistance and the ripple resistance of the electrolyte are under key control, so that the novel electrolyte can obtain good low-temperature freezing resistance, low DF value and leakage current and relatively high break-down voltage, and the aim that the electrolyte supports the aluminum electrolytic capacitor to reliably and continuously work for more than 10,000 hours at the ambient temperature between -55 DEG C and +155 DEG C is fulfilled.
Description
Technical field:
The present invention relates to the preparation method of a kind of aluminium electrolytic capacitor with electrolyte.
Background technology:
As the Working electrolyte of the actual negative electrode of aluminium electrolytic capacitor, the quality of performance directly affects the reliability of serviceability temperature scope, life-span and the capacitor of capacitor.Now, the miniaturization of electrolytic capacitor forward, wide temperature, long-life, highly reliable direction develop, and be also increasingly high to the requirement of Working electrolyte.
Summary of the invention:
The purpose of this invention is to provide the preparation method of a kind of aluminium electrolytic capacitor with wide temperature (55 ℃～+ 155 ℃), long-life (more than 10000 hours) electrolyte;
The present invention adopts following technical scheme to realize its goal of the invention; A kind of aluminium electrolytic capacitor is with the preparation method of electrolyte; It is processed by gamma-butyrolacton, ethylene glycol, isosebacic acid ammonium, azelaic acid hydrogen ammonium, ammonium hypophosphite, self-control additive, and its proportioning is a gamma-butyrolacton: ethylene glycol: the isosebacic acid ammonium: azelaic acid hydrogen ammonium: ammonium hypophosphite: self-control additive=62:26:2.6:3.9:2.3:3.2; Its preparation method is: by proportioning gamma-butyrolacton, ethylene glycol are heated to 50 ℃ in heat collecting type heated at constant temperature magnetic stirring apparatus; Add the isosebacic acid ammonium by proportioning then, beginning is stirred to for the first time dissolves continued fully and is heated to 90 ℃, adds azelaic acid hydrogen ammonium after one minute; Continue to be heated to 98 ℃ and carry out the second time and stir again; Stir after one minute and to add the self-control additive and stir for the third time, wait to be stirred to dissolve fully and lasting constant temperature to 108 ℃ about 10Min after, add ammonium hypophosphite and isosebacic acid ammonium again; The continuation stirring is also hotted plate about 10Mint to all stopping working after the dissolving; And be stirred to natural cooling, to be cooled to the room temperature sampling detect its viscosity, electrical conductivity, flash over voltage, pH value, water content and CL-, Fe3+, Pb, So42-, qualifiedly can carry out can and use.
Self-control additive of the present invention, its composition are that sweet mellow wine is converted p-nitrophenyl methyl alcohol; Its proportioning is a sweet mellow wine: p-nitrophenyl methyl alcohol=2.:1.
Owing to adopted above technical scheme; The present invention has realized its goal of the invention preferably; Because the interaction between ethylene glycol, gamma-butyrolacton, isosebacic acid ammonium, azelaic acid hydrogen ammonium, ammonium hypophosphite, the additive etc.; Emphasis has been controlled liquidus temperature, resistivity, methanol ability, the anti-ripple ability of electrolyte; Thereby make novel electrolyte can obtain good low-temperature anti-freeze performance, possess lower DF value and leakage current and higher relatively flash over voltage, realized supporting aluminium electrolytic capacitor reliable 10000 hours the above object of continuation work under-55 ℃～+ 155 ℃ ambient temperature.
The practical implementation method:
Below in conjunction with embodiment summary of the invention is further specified:
Embodiment 1:
Plant the preparation method of aluminium electrolutic capacitor with electrolyte; It is made by gamma-butyrolacton, ethylene glycol, isosebacic acid ammonium, azelaic acid hydrogen ammonium, ammonium hypophosphite, self-control additive, and its proportioning is a gamma-butyrolacton: ethylene glycol: the isosebacic acid ammonium: azelaic acid hydrogen ammonium: ammonium hypophosphite: self-control additive=62:26:2.6:3.9:2.3:3.2; Its preparation method is: press proportioning with gamma-butyrolacton; Ethylene glycol is heated to 50 ℃ in heat collecting type heated at constant temperature magnetic stirring apparatus; Add the isosebacic acid ammonium by proportioning then; Beginning is stirred to for the first time dissolves continued fully and is heated to 90 ℃; Add azelaic acid hydrogen ammonium after one minute; Continue to be heated to 98 ℃ and carry out the second time and stir again; Stir and add the self-control additive after one minute and continue stirring; Wait to be stirred to dissolve fully and lasting constant temperature to 108 ℃ about 10Min after; Add ammonium hypophosphite and isosebacic acid ammonium again; The continuation stirring is also hotted plate about 10Mint to all stopping working after the dissolving; Be stirred to the nature cooling; To be cooled to the room temperature sampling detect its viscosity; Electrical conductivity; Flash over voltage; PH value; Water content and CL-; Fe3+; Pb; So42-qualifiedly can carry out can and uses.
Gamma-butyrolacton of the present invention is meant: primary solvent raw material of the present invention, and to mix the back with ethylene glycol and be a kind of double solvents, main feature is that solidifying point is low, boiling point is high, is fit to wide temperature requirement.
Ethylene glycol of the present invention is meant: primary solvent raw material of the present invention, mix the back and be a kind of double solvents with gamma-butyrolacton.
Isosebacic acid ammonium of the present invention (capacitor level) is meant: pulverous industrial chemicals, and its conductivity and anti-freeze property are better; Its effect is to improve liquidus temperature and electric conductivity, improves flash over voltage;
Azelaic acid hydrogen ammonium of the present invention (capacitor level) is meant: possess good formation voltage and reach flash over voltage preferably, reduce product DF value, improve the anti-ripple performance of product;
Ammonium hypophosphite of the present invention (capacitor level) is meant: make anticorrisive agent, can suppress aquation, improve product methanol ability, improve product and form performance, reduce the product leakage current, and improve the product flash over voltage.
Embodiment 2:
Self-control additive of the present invention, its composition are that sweet mellow wine is converted p-nitrophenyl methyl alcohol; The proportioning 2:1 of its sweet mellow wine and p-nitrophenyl methyl alcohol
Self-control additive of the present invention is meant: be mixed and made into by sweet mellow wine and p-nitrophenyl methyl alcohol (capacitor level), it mainly acts on is to inhale hydrogen, the internal pressure of effectively slowing down capacitor.
Claims (2)
1. an aluminium electrolytic capacitor is with the preparation method of electrolyte; It is processed by gamma-butyrolacton, ethylene glycol, isosebacic acid ammonium, azelaic acid hydrogen ammonium, ammonium hypophosphite, self-control additive, it is characterized in that its preparation proportioning is a gamma-butyrolacton: ethylene glycol: isosebacic acid ammonium: azelaic acid hydrogen ammonium: ammonium hypophosphite: self-control additive=62:26:2.6:3.9:2.3:3.2; Its preparation method is: by proportioning gamma-butyrolacton, ethylene glycol are heated to 50 ℃ in heat collecting type heated at constant temperature magnetic stirring apparatus; Add the isosebacic acid ammonium by proportioning then, beginning is stirred to for the first time dissolves continued fully and is heated to 90 ℃, adds azelaic acid hydrogen ammonium after one minute; Continue to be heated to 98 ℃ and carry out the second time and stir again; Stir after one minute and to add the self-control additive and stir for the third time, wait to be stirred to dissolve fully and lasting constant temperature to 108 ℃ about 10Min after, add ammonium hypophosphite and isosebacic acid ammonium again; The continuation stirring is also hotted plate about 10Mint to all stopping working after the dissolving; And be stirred to natural cooling, to be cooled to the room temperature sampling detect its viscosity, electrical conductivity, flash over voltage, pH value, water content and CL-, Fe3+, Pb, So42-, qualifiedly can carry out can and use.
2. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that with the preparation method of electrolyte additive is the self-control additive, and its composition is that sweet mellow wine is converted p-nitrophenyl methyl alcohol; Its proportioning is a sweet mellow wine: p-nitrophenyl methyl alcohol=2.:1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102389710A CN102723203A (en) | 2012-07-11 | 2012-07-11 | Preparation method of electrolyte for aluminum electrolytic capacitor |
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| CN2012102389710A CN102723203A (en) | 2012-07-11 | 2012-07-11 | Preparation method of electrolyte for aluminum electrolytic capacitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240956A (en) * | 2013-06-06 | 2014-12-24 | 上海洪微电子科技有限公司 | Working electrolyte for ultrahigh-voltage aluminium electrolytic capacitor and manufacturing method thereof |
| CN109741943A (en) * | 2019-01-28 | 2019-05-10 | 江苏法拉电子有限公司 | A kind of dedicated aluminium electrolutic capacitor of automobile charging pile |
| CN111403178A (en) * | 2020-03-26 | 2020-07-10 | 湖州一力电子有限公司 | Ultra-wide temperature range high-voltage-resistant aluminum electrolytic capacitor |
| CN113363076A (en) * | 2021-08-09 | 2021-09-07 | 南通江海电容器股份有限公司 | Overvoltage automatic short-circuit protection capacitor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001307960A (en) * | 1997-08-01 | 2001-11-02 | Nippon Chemicon Corp | Aluminum electrolytic capacitor |
| CN1744247A (en) * | 2004-08-30 | 2006-03-08 | 广东风华高新科技股份有限公司 | Aluminium electrolytic capacitor working electrolyte and capacitor obtained thereof |
| CN101840786A (en) * | 2010-04-26 | 2010-09-22 | 南通新三能电子有限公司 | Working electrolyte of aluminum electrolytic capacitor for energy-saving lamp and preparation method thereof |
| CN102074364A (en) * | 2010-12-27 | 2011-05-25 | 东莞宏强电子有限公司 | Electrolyte for chip aluminum electrolytic capacitor and preparation method thereof |
-
2012
- 2012-07-11 CN CN2012102389710A patent/CN102723203A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001307960A (en) * | 1997-08-01 | 2001-11-02 | Nippon Chemicon Corp | Aluminum electrolytic capacitor |
| CN1744247A (en) * | 2004-08-30 | 2006-03-08 | 广东风华高新科技股份有限公司 | Aluminium electrolytic capacitor working electrolyte and capacitor obtained thereof |
| CN101840786A (en) * | 2010-04-26 | 2010-09-22 | 南通新三能电子有限公司 | Working electrolyte of aluminum electrolytic capacitor for energy-saving lamp and preparation method thereof |
| CN102074364A (en) * | 2010-12-27 | 2011-05-25 | 东莞宏强电子有限公司 | Electrolyte for chip aluminum electrolytic capacitor and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240956A (en) * | 2013-06-06 | 2014-12-24 | 上海洪微电子科技有限公司 | Working electrolyte for ultrahigh-voltage aluminium electrolytic capacitor and manufacturing method thereof |
| CN109741943A (en) * | 2019-01-28 | 2019-05-10 | 江苏法拉电子有限公司 | A kind of dedicated aluminium electrolutic capacitor of automobile charging pile |
| CN111403178A (en) * | 2020-03-26 | 2020-07-10 | 湖州一力电子有限公司 | Ultra-wide temperature range high-voltage-resistant aluminum electrolytic capacitor |
| CN111403178B (en) * | 2020-03-26 | 2020-11-03 | 湖州一力电子有限公司 | Ultra-wide temperature range high-voltage-resistant aluminum electrolytic capacitor |
| CN113363076A (en) * | 2021-08-09 | 2021-09-07 | 南通江海电容器股份有限公司 | Overvoltage automatic short-circuit protection capacitor |
| CN113363076B (en) * | 2021-08-09 | 2021-11-02 | 南通江海电容器股份有限公司 | Overvoltage automatic short-circuit protection capacitor |
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Application publication date: 20121010 |