CN101477902B - High temperature durable and wide temperature range aluminum electrolysis capacitor working electrolyte and preparation thereof - Google Patents
High temperature durable and wide temperature range aluminum electrolysis capacitor working electrolyte and preparation thereof Download PDFInfo
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- CN101477902B CN101477902B CN2008102080359A CN200810208035A CN101477902B CN 101477902 B CN101477902 B CN 101477902B CN 2008102080359 A CN2008102080359 A CN 2008102080359A CN 200810208035 A CN200810208035 A CN 200810208035A CN 101477902 B CN101477902 B CN 101477902B
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Abstract
The invention relates to a working electrolyte of a high-temperature and wide-temperature aluminum electrolytic capacitor and the preparation method thereof. The working electrolyte comprises glycol, r-butyrolactone, dimethylamine sebacate, boric acid, phosphoric acid, mannitol and silicotungstic acid, and the weight percentages of the components are respectively 12 to 38 percent : 50 to 75 percent : 12 to 18 percent : 0.2 to 1.8 percent : 0.2 to 0.5 percent : 0.3 to 0.8 percent : 0.3 to 0.7 percent. The preparation of the working electrolyte comprises the following steps: glycol, r-butyrolactone and dimethylamine sebacate are heated to a temperature of 50 to 70 DEG C and evenly mixed; then boric acid, mannitol and phosphoric acid are sequentially added, and continuously heated and stirred; silicotungstic acid is added and stirred; and the mixture is cooled to the room temperature, and the working electrolyte is acquired. The working electrolyte has the advantages of high temperature,wide temperature and high sparking voltage resistance, and low production cost; and the manufactured aluminum electrolytic capacitor can work for 2000 hours at a temperature of 105 DEG C, is providedwith a working temperature range width from minus 55 DEG C to plus 105 DEG C, and is resistant to sparking voltage up to 460V.
Description
Technical field
The invention belongs to electrolyte and preparation field thereof, particularly relate to a kind of high temperature and wide-temperature aluminium electrolytic capacitor Working electrolyte and preparation method thereof.
Background technology
Electrolytic capacitor is one of base components of electronic product, along with improving constantly of electronic product quality, to proposing more and more higher requirement in the upper limit working temperature of aluminium electrolytic capacitor, useful life. as be applied in the capacitor of electronic products such as automotive electronics, display, high-power charger, electric ballast, because the ripple current that electric capacity passes through is bigger, self-heating and continuous operation make capacitor be in the operational environment of high temperature for a long time; The high-voltage electrolysis capacitor that is used for electronic products such as Switching Power Supply, electricity-saving lamp, resistance to elevated temperatures requires high.
Electrolyte is the negative electrode of aluminium electrolytic capacitor, and its performance plays certain influence to the performance of capacitor, and existing electrolyte prescription is mainly by solute and solvent composition, and solute is organic carboxyl acid and salt thereof, and solvent has ethylene glycol, butyrolactone, water or its mixture.Adopt this prescription electrolyte aluminium electrolytic capacitor product in use, often because of withstand voltage low, the drum end occurs even explosion phenomenon is arranged, and the upper limit working temperature of this capacitor product only can reach about 85 ℃, can not satisfy the high temperature resistant and wide temperature range of Switching Power Supply and energy-saving lamp electronic product.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high temperature and wide-temperature aluminium electrolytic capacitor Working electrolyte and preparation method thereof, and electrolyte of the present invention is high temperature resistant, the high flash over voltage of wide gentleness, and low cost of manufacture.
A kind of high temperature of the present invention and wide-temperature aluminium electrolytic capacitor Working electrolyte, comprise: ethylene glycol, r one butyrolactone, decanedioic acid dimethylamine, boric acid, phosphoric acid, sweet mellow wine, silico-tungstic acid, its percentage by weight is 12-38%: 50-75%: 12-18%: 0.2-1.8%: 0.2-0.5%: 0.3-0.8%: 0.3-0.7%.
The preparation method of a kind of high temperature of the present invention and wide-temperature aluminium electrolytic capacitor Working electrolyte, comprise: with (12-38) weight % ethylene glycol, (50-75) weight %r one butyrolactone and (12-18) weight % decanedioic acid dimethylamine be heated to 50～70 ℃, and with its mixing, add (0.2-1.8) weight % boric acid more successively, (0.3-0.8) weight % sweet mellow wine, (0.2-0.5) weight % phosphoric acid, continue to be heated to 110-120 ℃, mix solution, and (0.3-0.7) weight % silico-tungstic acid added, stir, be cooled to room temperature, make aluminum electrolytic capacitor electrolyte.
Beneficial effect
(1) the high flash over voltage of high temperature resistant, the wide gentleness of electrolyte of the present invention, and low cost of manufacture;
(2) making aluminium electrolytic capacitor by electrolyte of the present invention can be at 105 ℃, and it is wide from-55 ℃-+105 ℃ to have operating temperature range in 2000 hours, and anti-flash over voltage reaches 460V.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
The proportioning of aluminum electrolytic capacitor electrolyte is by ethylene glycol 15
Weight%, r one butyrolactone 70
Weight%, decanedioic acid dimethylamine 13
Weight%, boric acid 0.5
Weight%, phosphoric acid 0.3
Weight%, sweet mellow wine 0.5
Weight%, silico-tungstic acid 0.7
Weight%.
The preparation of aluminum electrolytic capacitor electrolyte is with 15
Weight% ethylene glycol, 70
Weight%r one butyrolactone and 13
Weight% decanedioic acid dimethylamine is heated to 50～70 ℃, and with its mixing, adds 0.5 successively again
Weight% boric acid, 0.5
Weight% sweet mellow wine, 0.3
Weight% phosphoric acid continues to be heated to 110-120 ℃, mixes solution, and with 0.7
WeightThe % silico-tungstic acid adds, and stirs, and is cooled to room temperature, makes aluminum electrolytic capacitor electrolyte.
Embodiment 2
The proportioning of aluminum electrolytic capacitor electrolyte is by ethylene glycol 23
Weight%, r one butyrolactone 60
Weight%, decanedioic acid dimethylamine 14
Weight%, boric acid 1.5
Weight%, phosphoric acid 0.5
Weight%, sweet mellow wine 0.5
Weight%, silico-tungstic acid 0.5
Weight%.
Embodiment 3
The proportioning of aluminum electrolytic capacitor electrolyte is by ethylene glycol 28
Weight%, r one butyrolactone 55
Weight%, decanedioic acid dimethylamine 15
Weight%, boric acid 0.9
Weight%, phosphoric acid 0.2
Weight%, sweet mellow wine 0.3
Weight%, silico-tungstic acid 0.6
Weight%.
Embodiment 4
The proportioning of aluminum electrolytic capacitor electrolyte is by ethylene glycol 34
Weight%, r one butyrolactone 50
Weight%, decanedioic acid dimethylamine 13
Weight%, boric acid 1.2
Weight%, phosphoric acid 0.5
Weight%, sweet mellow wine 0.8
Weight%, silico-tungstic acid 0.5
Weight%.
Claims (2)
1. high temperature and wide-temperature aluminium electrolytic capacitor Working electrolyte, comprise: ethylene glycol, r one butyrolactone, decanedioic acid dimethylamine, boric acid, phosphoric acid, sweet mellow wine, silico-tungstic acid, its percentage by weight is 12-38%: 50-75%: 12-18%: 0.2-1.8%: 0.2-0.5%: 0.3-0.8%: 0.3-0.7%.
2. the preparation method of high temperature and wide-temperature aluminium electrolytic capacitor Working electrolyte, comprise: 12-38 weight % ethylene glycol, 50-75 weight %r one butyrolactone and 12-18 weight % decanedioic acid dimethylamine are heated to 50-70 ℃, and with its mixing, add 0.2-1.8 weight % boric acid, 0.3-0.8 weight % sweet mellow wine, 0.2-0.5 weight % phosphoric acid more successively, continue to be heated to 110-120 ℃, mix solution, and 0.3-0.7 weight % silico-tungstic acid added, stir, be cooled to room temperature, make aluminum electrolytic capacitor electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102080359A CN101477902B (en) | 2008-12-29 | 2008-12-29 | High temperature durable and wide temperature range aluminum electrolysis capacitor working electrolyte and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102080359A CN101477902B (en) | 2008-12-29 | 2008-12-29 | High temperature durable and wide temperature range aluminum electrolysis capacitor working electrolyte and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101477902A CN101477902A (en) | 2009-07-08 |
| CN101477902B true CN101477902B (en) | 2010-12-29 |
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| CN2008102080359A Active CN101477902B (en) | 2008-12-29 | 2008-12-29 | High temperature durable and wide temperature range aluminum electrolysis capacitor working electrolyte and preparation thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140035A (en) * | 2015-09-02 | 2015-12-09 | 南通江海电容器股份有限公司 | Working electrolytic solution of aluminum electrolytic capacitor with resistance to high voltage and wide-range temperature and manufacturing method thereof |
| CN105355432A (en) * | 2015-11-03 | 2016-02-24 | 铜陵市科峰电子有限责任公司 | High-temperature-resistant capacitor electrolyte |
| CN107863250A (en) * | 2017-10-23 | 2018-03-30 | 周瑛 | The electrolyte of the alminium electrolytic condenser of efficient stable |
| CN107705992A (en) * | 2017-10-23 | 2018-02-16 | 周瑛 | The electrolyte of the electricity-saving lamp alminium electrolytic condenser of efficient stable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026038A (en) * | 2006-02-23 | 2007-08-29 | 南通江海电容器有限公司 | Working electrolyte for aluminium electrolytic capacitor |
| CN101114544A (en) * | 2006-07-29 | 2008-01-30 | 广西师范大学 | Working electrolyte for wide temperature high voltage aluminium electrolytic capacitor and method for making same thereof |
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2008
- 2008-12-29 CN CN2008102080359A patent/CN101477902B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026038A (en) * | 2006-02-23 | 2007-08-29 | 南通江海电容器有限公司 | Working electrolyte for aluminium electrolytic capacitor |
| CN101114544A (en) * | 2006-07-29 | 2008-01-30 | 广西师范大学 | Working electrolyte for wide temperature high voltage aluminium electrolytic capacitor and method for making same thereof |
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| CN101477902A (en) | 2009-07-08 |
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