CN102789900A - Electrolytic capacitor working electrolyte capable of improving high-temperature resistance and prolonging service life of electrolytic capacitor - Google Patents
Electrolytic capacitor working electrolyte capable of improving high-temperature resistance and prolonging service life of electrolytic capacitor Download PDFInfo
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- CN102789900A CN102789900A CN2012101201013A CN201210120101A CN102789900A CN 102789900 A CN102789900 A CN 102789900A CN 2012101201013 A CN2012101201013 A CN 2012101201013A CN 201210120101 A CN201210120101 A CN 201210120101A CN 102789900 A CN102789900 A CN 102789900A
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- electrolytic capacitor
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- working electrolyte
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Abstract
The invention provides electrolytic capacitor working electrolyte capable of improving high-temperature resistance and prolonging service life of an electrolytic capacitor. The electrolytic capacitor working electrolyte comprises, by weight, 5-15% of electrolyte, 1.8-5% of auxiliary electrolyte, 60-85% of solvent, 4-11% of flash fire voltage enhancing agent, 4-8% of stabilizer and 0.2-1% of hydrogen eliminating agent. The electrolytic capacitor working electrolyte is applied to the electrolytic capacitor, can well improve high-pressure resistance and high-temperature resistance of the electrolytic capacitor, and simultaneously the service life of the electrolytic capacitor is well prolonged.
Description
Technical field
The invention belongs to electrolyte for electrolytic capacitor and make the field, relate in particular to a kind of high temperature resistant, long life electrolysis electrolyte capacitor working electrolyte.
Background technology
Basic use is that ethylene glycol is as solvent in mesohigh electrolyte in the past; The saturated organic dicarboxylic acid of straight chain or its salt such as decanedioic acid, azelaic acid, adipic acid, dodecanedioic acid and add a certain amount of inorganic acid such as boric acid, five boric acid or its salt as electrolyte, add and gather hexylene glycol and wait the flash over voltage that improves electrolyte.Owing to there is the crystallization water of esterification and boric acid itself between ethylene glycol and the boric acid, can cause the electrolyte overall moisture to rise, to use more than 100 ℃, the capacitor air pressure inside strengthens, and capacitor early failure can produce electrolysis; The saturated organic dicarboxylic acid of straight chain or its salt are lower for ethylene glycol solvent dissolubility, along with electrolyte ethylene glycol solvent continuous recovery at high temperature in the capacitor, and organic monoacid or its salt is as easy as rolling off a log separates out as crystallization; Capacitor electric leakage in aging can strengthen; The equivalent series resistance of capacitor strengthens during long-term work, and impedance increases, and capacitor produces heating; Capacitor life-span shortens, and phenomenon appears worsening in life characteristic.
Chinese patent 200710045162.7 discloses a kind of high pressure working electrolytic solution of electrolytic capacitor, and it adopts 2, and 7-dimethyl-octa diacid and salt thereof are main electrolyte, prepares the Working electrolyte of electrolytic capacitor through adding additive; The electrolyte that this kind prescription makes is used for electrolytic capacitor, though improved the barotolerance of electrolytic capacitor to a certain extent, does not obtain fine raising useful life high temperature resistant and electrolytic capacitor.
Summary of the invention
For solving above-mentioned technical barrier, the invention provides a kind of high temperature resistant, long life electrolysis electrolyte capacitor working electrolyte, its weight proportion consists of:
Main electrolyte: 5%～15%;
Assisted electrolysis matter: 1.8%～5%;
Solvent: 60%～85%;
Flash over voltage improving agent: 4%～11%;
Stabilizer: 4%～8%;
The hydrogen agent disappears: 0.2%～1%.
Said main electrolyte is 1,10-dimethyl octadecane diacid and salt thereof;
Said assisted electrolysis matter is azelaic acid, decanedioic acid and salt thereof;
Said solvent is an alcohol organic solvent, like ethylene glycol;
The mixture of a kind of or two kinds of any weight ratios in the polyethylene glycol that said flash over voltage improving agent is the degree of polymerization 500～3000, the polyvinyl alcohol;
Said stabilizer is phosphorous acid diisooctyl phenylester (diisooctyl phenyl phosphite) and phosphorus-containing compound.Said phosphorous acid diisooctyl phenylester (diisooctyl phenyl phosphite) is any mass ratio with phosphorus-containing compound.
The said hydrogen agent that disappears is one or more in resorcinol, hydroquinones, nitrobenzoic acid, p-nitrophenol, p-nitrophenyl methyl alcohol, the m-nitroanisole.
Beneficial effect: a kind of high temperature resistant, long life electrolysis electrolyte capacitor working electrolyte provided by the invention, be used for electrolytic capacitor, can improve high pressure resistant, the heat-resisting quantity of electrolytic capacitor well, obtain fine raising simultaneously the useful life of electrolytic capacitor.
Specific embodiments
Through embodiment the present invention is further specified below.Following examples are used to the present invention is described and do not limit the scope of the invention.
Embodiment 1:
A kind of high temperature resistant, long life electrolysis electrolyte capacitor working electrolyte, the consisting of of weight proportion: ethylene glycol, 71.4%; Macrogol 2000,8%; 1,10-dimethyl octadecane diacid ammonium, 14%; Ammonium azelate, 4%; Phenyl Di-2-ethyl Hexyl Phosphite, 2%; Ammonium hypophosphite, 0.2%; M-nitroanisole, 0.4%.
According to the electrolyte of said components proportional arrangement, the test performance index is following: flash over voltage 480V; Conductivity (30 ℃) is 2.0 ± 0.2 ms/cm; PH value is 6.4～6.8; Water content≤3.0%.
Claims (4)
1. high temperature resistant, long life electrolysis electrolyte capacitor working electrolyte, weight proportion consists of: main electrolyte, 5% ~ 15%; Assisted electrolysis matter, 1.8% ~ 5%; Solvent, 60% ~ 85%; The flash over voltage improving agent, 4% ~ 11% stabilizer, 4% ~ 8%; The hydrogen agent that disappears, 0.2% ~ 1%; Said main electrolyte is 1,10-dimethyl octadecane diacid and salt thereof; Said assisted electrolysis matter is azelaic acid, decanedioic acid and salt thereof.
2. a kind of high temperature resistant, long life electrolysis electrolyte capacitor working electrolyte according to claim 1 is characterized in that: the mixture of a kind of or two kinds of any weight ratios in the polyethylene glycol that said flash over voltage improving agent is the degree of polymerization 500～3000, the polyvinyl alcohol.
3. a kind of high temperature resistant, long life electrolysis electrolyte capacitor working electrolyte according to claim 1 is characterized in that: said stabilizer is phosphorous acid diisooctyl phenylester (diisooctyl phenyl phosphite) and phosphorus-containing compound.
4. a kind of high temperature resistant, long life electrolysis electrolyte capacitor working electrolyte according to claim 3 is characterized in that: said phosphorous acid diisooctyl phenylester (diisooctyl phenyl phosphite) is any mass ratio with phosphorus-containing compound.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101201013A CN102789900A (en) | 2012-04-24 | 2012-04-24 | Electrolytic capacitor working electrolyte capable of improving high-temperature resistance and prolonging service life of electrolytic capacitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101201013A CN102789900A (en) | 2012-04-24 | 2012-04-24 | Electrolytic capacitor working electrolyte capable of improving high-temperature resistance and prolonging service life of electrolytic capacitor |
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| CN102789900A true CN102789900A (en) | 2012-11-21 |
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| CN2012101201013A Pending CN102789900A (en) | 2012-04-24 | 2012-04-24 | Electrolytic capacitor working electrolyte capable of improving high-temperature resistance and prolonging service life of electrolytic capacitor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779099A (en) * | 2014-01-15 | 2014-05-07 | 南通一品机械电子有限公司 | Bolt-type aluminum electrolytic capacitor and electrolyte thereof |
| CN103779093A (en) * | 2014-01-15 | 2014-05-07 | 南通一品机械电子有限公司 | Welding-plate-type aluminum electrolytic capacitor and electrolyte thereof |
| CN104217858A (en) * | 2013-05-30 | 2014-12-17 | 南通一品机械电子有限公司 | High-voltage, high-conductivity and long-life electrolyte |
| 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 |
| CN106785042A (en) * | 2017-01-03 | 2017-05-31 | 华南师范大学 | A kind of high thermal stability carbonic ester electrolyte and preparation method and application |
| CN110246696A (en) * | 2019-05-31 | 2019-09-17 | 南通一品机械电子有限公司 | A kind of capacitor electrolyte and fire-retardant industry control class aluminium electrolutic capacitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1577658A (en) * | 2003-06-26 | 2005-02-09 | 松下电器产业株式会社 | Driving electrolyte and electrolytic capacitor using the same |
| CN101373665A (en) * | 2007-08-23 | 2009-02-25 | 南通瑞达电子材料有限公司 | Long-life working electrolyte for electrolytic capacitor |
| CN101599367A (en) * | 2009-07-10 | 2009-12-09 | 南通江海电容器股份有限公司 | 600V ultrahigh voltage aluminum electrolytic capacitor working electrolyte and preparation and application thereof |
-
2012
- 2012-04-24 CN CN2012101201013A patent/CN102789900A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1577658A (en) * | 2003-06-26 | 2005-02-09 | 松下电器产业株式会社 | Driving electrolyte and electrolytic capacitor using the same |
| CN101373665A (en) * | 2007-08-23 | 2009-02-25 | 南通瑞达电子材料有限公司 | Long-life working electrolyte for electrolytic capacitor |
| CN101599367A (en) * | 2009-07-10 | 2009-12-09 | 南通江海电容器股份有限公司 | 600V ultrahigh voltage aluminum electrolytic capacitor working electrolyte and preparation and application thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217858A (en) * | 2013-05-30 | 2014-12-17 | 南通一品机械电子有限公司 | High-voltage, high-conductivity and long-life electrolyte |
| CN103779099A (en) * | 2014-01-15 | 2014-05-07 | 南通一品机械电子有限公司 | Bolt-type aluminum electrolytic capacitor and electrolyte thereof |
| CN103779093A (en) * | 2014-01-15 | 2014-05-07 | 南通一品机械电子有限公司 | Welding-plate-type aluminum electrolytic capacitor and electrolyte 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 |
| CN106785042A (en) * | 2017-01-03 | 2017-05-31 | 华南师范大学 | A kind of high thermal stability carbonic ester electrolyte and preparation method and application |
| CN106785042B (en) * | 2017-01-03 | 2019-05-10 | 华南师范大学 | A kind of high thermal stability carbonic ester electrolyte and the preparation method and application thereof |
| CN110246696A (en) * | 2019-05-31 | 2019-09-17 | 南通一品机械电子有限公司 | A kind of capacitor electrolyte and fire-retardant industry control class aluminium electrolutic capacitor |
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Application publication date: 20121121 |