CN101477900A - Working electrolyte of wide-temperature high-voltage aluminum electrolytic capacitor and preparation method thereof - Google Patents
Working electrolyte of wide-temperature high-voltage aluminum electrolytic capacitor and preparation method thereof Download PDFInfo
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- CN101477900A CN101477900A CNA200810208033XA CN200810208033A CN101477900A CN 101477900 A CN101477900 A CN 101477900A CN A200810208033X A CNA200810208033X A CN A200810208033XA CN 200810208033 A CN200810208033 A CN 200810208033A CN 101477900 A CN101477900 A CN 101477900A
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- electrolyte
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- working electrolyte
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 35
- 239000003990 capacitor Substances 0.000 title claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 35
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 claims abstract description 20
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 20
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000654 additive Substances 0.000 claims abstract description 8
- 230000000996 additive effect Effects 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000012046 mixed solvent Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 239000002253 acid Substances 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims description 8
- 229930188620 butyrolactone Natural products 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 238000005352 clarification Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 2
- 238000007710 freezing Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 6
- 108010053481 Antifreeze Proteins Proteins 0.000 description 3
- 230000002528 anti-freeze Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- JCNLVMVIONJLMQ-UHFFFAOYSA-N 2-hydroxyethoxyboronic acid Chemical class OCCOB(O)O JCNLVMVIONJLMQ-UHFFFAOYSA-N 0.000 description 1
- SATJMZAWJRWBRX-UHFFFAOYSA-N azane;decanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCC([O-])=O SATJMZAWJRWBRX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Electric Double-Layer Capacitors Or The Like (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention relates to a working electrolyte of a wide-temperature high-voltage aluminum electrolytic capacitor, which comprises the following components: 10-37 percent of solvent ethylene glycol, 50-68 percent of solute 1, 6-dodecanedioic acid (1, 6-DDA), 8-12 percent of solute dimethylamine, 0.1-0.6 percent of additive phosphoric acid and 2-4 percent of pure water; preparation: (1) pouring 1, 6-dodecanedioic acid into a mixed solvent of ethylene glycol and gamma-butyrolactone, stirring and mixing, and then introducing dimethylamine liquefied gas, wherein the stirring is continuously carried out; (2) and (2) continuously heating the electrolyte which is reacted and basically clarified in the step (1) to 65-80 ℃, adding additive phosphoric acid, finally adding pure water, and naturally cooling the electrolyte. The raw materials used in the invention have low price, excellent solubility and better anti-freezing performance, so that the working electrolyte has good forming capability and high-temperature stability.
Description
Technical field
The invention belongs to electrolyte and preparation field thereof, particularly relate to a kind of wide temperature range high voltage aluminum electrolysis capacitor working electrolyte and preparation method thereof.
Background technology
Electrolytic capacitor is one of base components of electronic product, and is along with the development of large-screen color TV, automotive electronics, converter technique, electricity-saving lamp and communications electronics, increasing to the high-pressure aluminum electrolytic capacitor demand.
Electrolyte is the negative electrode of aluminium electrolytic capacitor, and it can repair anode oxide film fault and defective, simultaneously to serviceability temperature scope, useful life, reliability and other the decisive role such as electric property of aluminium electrolytic capacitor.The Working electrolyte that present industrial high-pressure aluminum electrolytic capacitor uses is generally ethylene glycol borate salt system and ethylene glycol. the ammonium sebacate system.The former lost efficacy owing to vapour pressure causes the capacitor bulging more easily; The latter causes condenser loss bigger because conductivity is low.The electrolyte of two kinds of systems all can not satisfy the requirement of wide temperature high voltage aluminium electrolytic capacitor to serviceability temperature scope and voltage well.
Summary of the invention
Technical problem to be solved by this invention provides a kind of wide temperature range high voltage aluminum electrolysis capacitor working electrolyte and preparation method thereof, the cost of material that the present invention uses is cheap, dissolubility is excellent, the anti-freeze performance makes Working electrolyte that good formation ability and high-temperature stability be arranged preferably.
A kind of wide temperature range high voltage aluminum electrolysis capacitor working electrolyte of the present invention, comprise: solvent is ethylene glycol and r-butyrolactone, solute is 1,6-dodecandioic acid (1,6-DDA), dimethylamine and phosphoric acid, additive is a pure water, and its percentage by weight is 10-37%:50-68%:8-12%:3-5%:0.1-0.6%:2-4%.
The preparation method of a kind of wide temperature range high voltage aluminum electrolysis capacitor working electrolyte of the present invention comprises:
(1) be 8-12%1 with percentage by weight, it is that 10-37% ethylene glycol and percentage by weight are in the mixed solvent of 50-68%r one butyrolactone that the 6-dodecandioic acid is poured percentage by weight into, feeds the dimethylamine liquefied gas after mixing again, and process constantly stirs;
(2) step (1) has been reacted and the electrolyte of clarification substantially continues to be heated to 65-80 ℃, and to add weight of additive percentage be 0.1-0.6% phosphoric acid that adding percentage by weight at last is the 2-4% pure water, natural cooling electrolyte.
Spent glycol is a main solvent, 1,6-dodecandioic acid (1,6-DDA) wait and to be solute, and some other additive, because the interaction between them, reduced the electrolyte liquidus temperature, thereby make capacitor can be under 125 ℃ of high temperature, 500V condition of high voltage steady operation, Working electrolyte has obtained anti-freeze performance preferably, makes Working electrolyte that good formation ability and high-temperature stability be arranged.
Through outward appearance behind 85 ℃, the aging 3h of 500V do not take place with the prepared sample of the electrolyte that is equipped with the drum end, survey sample its inside also not since the flash over voltage instability do not puncture.
Beneficial effect
The cost of material that the present invention uses is cheap, dissolubility is excellent, has reduced the electrolyte liquidus temperature, thereby makes Working electrolyte obtain anti-freeze performance preferably, makes Working electrolyte that good formation ability and high-temperature stability be arranged.
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 working electrolyte for aluminium electrolytic capacitor is: ethylene glycol 15
Weight%, r one butyrolactone 65
Weight%, 1,6-dodecandioic acid (1,6-DDA) 12
Weight%, dimethylamine 4
Weight%, phosphoric acid 0.5
Weight%, pure water 3.5
Weight%.
Its preparation: (1) is with 12
Weight%1, the 6-dodecandioic acid pours 15 into
Weight% ethylene glycol and 65
WeightIn the mixed solvent of %r one butyrolactone, feed the dimethylamine liquefied gas after mixing again, process constantly stirs;
(2) step (1) has been reacted and the electrolyte of clarification substantially continues to be heated to 65 ℃, and added additive 0.5
Weight% phosphoric acid adds 3.5 at last
WeightThe % pure water, natural cooling electrolyte.
Embodiment 2
The proportioning of working electrolyte for aluminium electrolytic capacitor is: ethylene glycol 25
Weight%, r one butyrolactone 60
Weight%, 1,6-dodecandioic acid (1,6-DDA) 9
Weight%, dimethylamine 3.5
Weight%, phosphoric acid 0.5
Weight%, pure water 2
Weight%.
Embodiment 3
The proportioning of working electrolyte for aluminium electrolytic capacitor is: ethylene glycol 33
Weight%, r one butyrolactone 52
Weight%, 1,6-dodecandioic acid (1,6-DDA) 8
Weight%, dimethylamine 3
Weight%, phosphoric acid 0.2
Weight%, pure water 3.8
Weight%.
Claims (3)
1. wide temperature range high voltage aluminum electrolysis capacitor working electrolyte, comprise: solvent ethylene glycol and r one butyrolactone, solute 1,6-dodecandioic acid (1,6-DDA), dimethylamine and additive phosphoric acid, pure water, its percentage by weight is 10-37%:50-68%:8-12%:3-5%:0.1-0.6%:2-4%.
2. a kind of wide temperature range high voltage aluminum electrolysis capacitor working electrolyte according to claim 1, it is characterized in that: through outward appearance behind 85 ℃, the aging 3h of 500V do not take place with the capacitor of described electrolyte preparation the drum end, survey sample its inside also not since the flash over voltage instability do not puncture.
3. the preparation method of a wide temperature range high voltage aluminum electrolysis capacitor working electrolyte comprises:
(1) be 8-12%1 with percentage by weight, it is that 10-37% ethylene glycol and percentage by weight are in the mixed solvent of 50-68%r one butyrolactone that the 6-dodecandioic acid is poured percentage by weight into, feeds the dimethylamine liquefied gas after mixing again, and process constantly stirs;
(2) step (1) has been reacted and the electrolyte of clarification substantially continues to be heated to 65-80 ℃, and to add weight of additive percentage be 0.1-0.6% phosphoric acid that adding percentage by weight at last is the 2-4% pure water, natural cooling electrolyte.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN200810208033XA CN101477900B (en) | 2008-12-29 | 2008-12-29 | Wide temperature range high voltage aluminum electrolysis capacitor working electrolyte and preparation thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN200810208033XA CN101477900B (en) | 2008-12-29 | 2008-12-29 | Wide temperature range high voltage aluminum electrolysis capacitor working electrolyte and preparation thereof |
Publications (2)
Publication Number | Publication Date |
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CN101477900A true CN101477900A (en) | 2009-07-08 |
CN101477900B CN101477900B (en) | 2010-12-29 |
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Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6589441B1 (en) * | 2001-03-19 | 2003-07-08 | Pacesetter, Inc. | High voltage, highly conductive electrolyte for electrolytic capacitors |
CN101026038B (en) * | 2006-02-23 | 2010-12-01 | 南通江海电容器股份有限公司 | Working electrolyte for aluminium electrolytic capacitor |
CN101114544B (en) * | 2006-07-29 | 2010-12-29 | 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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Effective date of registration: 20181204 Address after: 438600 Luotian County Economic Development Zone, Huanggang City, Hubei Province Patentee after: Hubei Haicheng Electronics Co., Ltd. Address before: 226361 No. 79 Tongyang South Road, Pingchao, Tongzhou City, Jiangsu Province Patentee before: Nantong Jianghai Capacitor Co., Ltd. |
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