CN105931844B - A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and its production method - Google Patents
A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and its production method Download PDFInfo
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- CN105931844B CN105931844B CN201610253257.7A CN201610253257A CN105931844B CN 105931844 B CN105931844 B CN 105931844B CN 201610253257 A CN201610253257 A CN 201610253257A CN 105931844 B CN105931844 B CN 105931844B
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- branched chain
- highly branched
- medium
- electrolytic capacitor
- high voltage
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- 239000003990 capacitor Substances 0.000 title claims abstract description 56
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 35
- 239000003792 electrolyte Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 36
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 11
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 9
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 12
- 150000001735 carboxylic acids Chemical class 0.000 claims description 11
- 229910021529 ammonia Inorganic materials 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000012028 Fenton's reagent Substances 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- -1 alkyl pentenoate Chemical compound 0.000 claims description 6
- FUSUHKVFWTUUBE-UHFFFAOYSA-N buten-2-one Chemical compound CC(=O)C=C FUSUHKVFWTUUBE-UHFFFAOYSA-N 0.000 claims description 6
- 150000007522 mineralic acids Chemical class 0.000 claims description 5
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 150000001991 dicarboxylic acids Chemical class 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- 239000003444 phase transfer catalyst Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000007348 radical reaction Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 150000003628 tricarboxylic acids Chemical class 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000032050 esterification Effects 0.000 abstract description 2
- 238000005886 esterification reaction Methods 0.000 abstract description 2
- 230000010287 polarization Effects 0.000 abstract description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 14
- 230000008901 benefit Effects 0.000 description 5
- 239000010408 film Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000003985 ceramic capacitor Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 206010003694 Atrophy Diseases 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte, including 10 40 parts of highly branched chain ammonium salt, 10 80 parts of ethylene glycol and 15 parts of water for carrying alkyl and alkoxy.The medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte of the present invention, alkyl and alkoxy are introduced in structure, due to the steric hindrance effect of group on side chain and the polarization of alkoxy grp, make solubility increase of the long-chain polybasic carboxylic acid in ethylene glycol, esterification is prevented to improve high-temperature behavior, but electrical conductivity does not decline.
Description
Technical field
The present invention relates to a kind of electrolyte, more particularly to a kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and its life
Production method.
Background technology
Capacitor is using most wide, dosage maximum, and the electronic component do not replaced.It is total that its yield accounts for electronic component
The 40% of amount, and aluminium electrolutic capacitor accounts for three major types capacitor (electrolytic capacitor, ceramic capacitor, organic film condenser)
36.8% or so of yield.
At present, China has become the major producing country of global aluminium electrolutic capacitor.According to the data of IT information centers, 2004
Year, the yield of Chinese aluminium electrolutic capacitor reaches 70,000,000,000, accounts for the 40% of global similar product, more than 10,000,000,000 yuan people of sales volume
People's coin.With the household electrical appliance such as the audio-visual products such as PC products, television set, DVD, washing machine, energy-saving lamp and transformer, automotive electronics
The fast development of product etc., the market demand of aluminium electrolutic capacitor will be increased with the speed not less than 5%.
The outstanding feature of aluminium electrolutic capacitor is：
(1) capacitance per unit volume amount is big, is several times to tens times of other capacitors.
(2) rated capacity is big, due to using winding-structure, it is easy to extended volume, therefore can easily accomplish several
The hundred even rated capacitance of thousands of microfarads.
(3) there is self-healing action, due in capacitor internal there are electrolyte, at work on capacitor anode aluminium foil
Local damage once occurs for dielectric, the OH in electrolyte-Radical ion can reach rapidly under the action of electric field, by damage location
Block and by the oxide-film reparation of destruction, capacitor is recovered normal.
(4) working field strength is high, since anode oxide film grows about 1.4nm, i.e. anode for every volt in forming process
Electric field strength during oxide growth is about 7 × 107V/cm, the electric field strength under its working status is about 5 × 107V/cm, this value
It is far longer than the working field strength of ceramic capacitor and thin film capacitor.
(5) price advantage, manufactures the manufacture cost ratio of the advantage of lower cost of aluminium electrolutic capacitor, especially unit capacity
Other types of capacitor has overwhelming dominance.
Just because of above-mentioned advantage, aluminium electrolutic capacitor has obtained extremely being widely applied and developing.Although developing
Cheng Zhong, aluminium electrolutic capacitor run into from integrated circuit, the improvement of circuitry and are answered in high pressure, high frequency, long-life, low capacity
With the phase of other capacitors in field (such as multilayer monolith ceramic capacitor, metallic film capacitor, tantalum electrolytic capacitor)
Mutually infiltration and challenge, but due to aluminium electrolutic capacitor capacity price than advantage, it is and continuous with aluminium electrolutic capacitor itself
Improve and perfect, the application field of miniaturization, chip type and mesohigh large capacity aluminium electrolutic capacitor are constantly widened, especially
Electric carrier come into operation and the development of all kinds of power supplys, aluminium electrolutic capacitor not only will not atrophy, can also have more
Strong vitality and broader development space.
Although domestic capacitor production scale is very big, but the middle and high jewelling of high-performance, especially high temperature resistant (160 DEG C)
Electrolytic capacitor still needs to import.As the overwhelming majority produces the aluminium electrolutic capacitor of outlet energy-saving lamp industry using Japan, Korea Spro
The imported products such as state.
The main reason for domestic aluminium electrolutic capacitor performance is not high, except originals such as manufacturing technology level, anode aluminium foil quality
Because outer, the electrolyte property in capacitor is an important restriction factor.
Influence of the electrolyte to capacitor performance in electrolytic capacitor is most important.It determines the work temperature of capacitor
Spend characteristic, pressure-resistant scope and resistance to ripple current size, and capacitor life-span.
Ripple current ability is low, fissipation factor capacity for bearing of being shown of import domestic capacitor product abroad now
Change is fast in use and the shortcomings of short life, mainly due to the influence of electrolyte so that now in high request is produced,
During high-voltage electrolysis capacitor, Japan, the imported product of South Korea can only be used.
The content of the invention
The technical problem to be solved in the present invention is overcome the deficiencies of the prior art and provide a kind of high temperature resistant, high pressure resistant, resistance to height
The medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and its production method of ripple current and long lifespan.
In order to solve the above technical problems, technical solution proposed by the present invention is：A kind of medium-high voltage aluminum electrolytic capacitor is branched
Chain electrolyte, includes the water of highly branched chain ammonium salts of the 10-40 with alkyl and alkoxy, 10-80 ethylene glycol and 1-5.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte, it is preferred that the highly branched chain ammonium salt includes highly branched chain
Dicarboxylic acids ammonium, the tricarboxylic acid ammonium of highly branched chain, the hexabasic carboxylic acid ammonium of the quaternary carboxylic acid ammonium of highly branched chain and highly branched chain, and it
Side chain on have alkyl or an alkoxy, the carbon number between two carboxyls is equal to or more than 18.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, comprises the following steps：1) side chain is carried
Multi-carboxylate synthesis, raw material reaction is made with butenone and alkyl pentenoate, with inorganic acid as catalyst, organic molten
In agent medium, Fenton reagent is added as radical reaction initiator, when reaction 2 is small under conditions of -10-10 DEG C, is obtained
The multi-carboxylate of highly branched chain；
2) formation of highly branched chain polyacid, the multi-carboxylate obtained in step 1) is hydrolyzed to obtain highly branched chain polynary
Acid.
3) preparation of electrolyte, the highly branched chain polyacid obtained in step 2) is dissolved in ethylene glycol, is led to ammonia and is adjusted
PH obtains the ethylene glycol solution i.e. electrolyte of polybasic carboxylic acid ammonium salt between 6-8.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, it is preferred that added in step 2)
Fenton reagent is as phase transfer catalyst.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, it is preferred that be slowly introducing in step 3)
Ammonia, and the 10%-20% that the amount for being passed through ammonia is gross mass.
Above-mentioned medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, it is preferred that the inorganic acid in step 1)
Including sulfuric acid, phosphoric acid and hydrofluoric acid.
Compared with prior art, the advantage of the invention is that：1st, medium-high voltage aluminum electrolytic capacitor highly branched chain of the invention electricity
Liquid is solved, alkyl and alkoxy are introduced in structure, due to the steric hindrance effect and the polarization of alkoxy grp of group on side chain
Effect, makes solubility increase of the long-chain polybasic carboxylic acid in ethylene glycol, prevents esterification from improving high-temperature behavior, but electrical conductivity is simultaneously
Do not decline；2nd, using reaction system the characteristics of, control reaction condition can obtain the polybasic carboxylic acid of different structure, its ratio adjusts,
Reactive material chain length is different, can regulate and control side chain alkoxy grp in polybasic carboxylic acid number.3rd, branch directly needed for synthesis
Chain Diversity carboxylic acid and its salt, utilize the synergistic effect of " mixture ", and the separation of " mixture " is not only not required, but also can substantially carry
The electrical property such as the heatproof of high capacitance, pressure-resistant, this process route have not yet to see report.Product yield is not less than 90%.4th, it is sharp
With process characteristic, production cost can obviously reduce.5th, can by the change of technological parameter, regulate and control product structure and polybasic carboxylic acid into
The ratio divided, can form the tandem product for meeting different performance requirement；
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, without having to pay creative labor, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the when m- voltage curve of the medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte obtained in embodiment 1.
Embodiment
For the ease of understanding the present invention, present invention work more comprehensively, is meticulously described below in conjunction with preferred embodiment,
But protection scope of the present invention is not limited to embodiment in detail below.
It should be strongly noted that when a certain element, to be described as " be fixed on, be fixed in, be connected to or be communicated in " another
When on element, it can be directly fixed, affixed, connection or connect on another element or by connecting among other
Fitting is indirectly fixed, affixed, connection or connection are on another element.
Unless otherwise defined, all technical terms used hereinafter and the normally understood implication of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection domain.
Embodiment 1
A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte as shown in Figure 1, including 10 carry alkyl and alkoxy
Highly branched chain ammonium salt, 80 ethylene glycol and 3 water.
In the present embodiment, highly branched chain ammonium salt includes dicarboxylic acids ammonium, tricarboxylic acid ammonium, the highly branched chain of highly branched chain of highly branched chain
Quaternary carboxylic acid ammonium and highly branched chain hexabasic carboxylic acid ammonium, and have alkyl or alkoxy on their side chain, between two carboxyls
Carbon number be equal to or more than 18.
In the present embodiment, medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte, comprises the following steps：
1) synthesis of the multi-carboxylate with side chain, makees raw material reaction, with inorganic with butenone and alkyl pentenoate
Acid as catalyst, in organic solvent medium, adds Fenton reagent as radical reaction initiator, under conditions of 10 DEG C
React 2 it is small when, obtain the multi-carboxylate of highly branched chain；
2) formation of highly branched chain polyacid, the multi-carboxylate obtained in step 1) is hydrolyzed to obtain highly branched chain polynary
Acid.
3) preparation of electrolyte, the highly branched chain polyacid obtained in step 2) is dissolved in ethylene glycol, is led to ammonia and is adjusted
PH obtains the ethylene glycol solution i.e. electrolyte of polybasic carboxylic acid ammonium salt between 6-8.
In the present embodiment, Fenton reagent is added in step 2) as phase transfer catalyst.
In the present embodiment, ammonia is slowly introducing in step 3), and the amount for being passed through ammonia is the 10% of gross mass.
In the present embodiment, the inorganic acid in step 1) is any one of sulfuric acid, phosphoric acid and hydrofluoric acid.
Claims (5)
- A kind of 1. medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte, it is characterised in that：Alkyl and alcoxyl are carried including 10-40 parts The highly branched chain ammonium salt of base, 10-80 parts of ethylene glycol and 1-5 parts of water, dicarboxylic acids ammonium of the highly branched chain ammonium salt including highly branched chain, The hexabasic carboxylic acid ammonium of the tricarboxylic acid ammonium of highly branched chain, the quaternary carboxylic acid ammonium of highly branched chain and highly branched chain, and have on their side chain Alkyl or alkoxy, the carbon number between two carboxyls are equal to or more than 18.
- A kind of 2. medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte as claimed in claim 1, it is characterised in that Comprise the following steps：1) synthesis of the multi-carboxylate with side chain, makees raw material reaction with butenone and alkyl pentenoate, with Inorganic acid as catalyst, in organic solvent medium, adds Fenton reagent as radical reaction initiator, at -10-10 DEG C Under conditions of reaction 2 it is small when, obtain the multi-carboxylate of highly branched chain；2) formation of highly branched chain polyacid, the multi-carboxylate obtained in step 1) is hydrolyzed to obtain highly branched chain polyacid；3) preparation of electrolyte, the highly branched chain polyacid obtained in step 2) is dissolved in ethylene glycol, and logical ammonia adjusts pH and exists Between 6-8, the ethylene glycol solution i.e. electrolyte of polybasic carboxylic acid ammonium salt is obtained.
- 3. medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte according to claim 2, it is characterised in that： Fenton reagent is added in step 2) as phase transfer catalyst.
- 4. medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte according to claim 2, it is characterised in that：Step It is rapid 3) in be slowly introducing ammonia, and be passed through ammonia amount be gross mass 10%-20%.
- 5. medium-high voltage aluminum electrolytic capacitor highly branched chain method for producing electrolyte according to claim 2, it is characterised in that：Step It is rapid 1) in inorganic acid include sulfuric acid, phosphoric acid and hydrofluoric acid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610253257.7A CN105931844B (en) | 2016-04-22 | 2016-04-22 | A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and its production method |
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|---|---|---|---|
| CN201610253257.7A CN105931844B (en) | 2016-04-22 | 2016-04-22 | A kind of medium-high voltage aluminum electrolytic capacitor highly branched chain electrolyte and its production method |
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| CN105931844A CN105931844A (en) | 2016-09-07 |
| CN105931844B true CN105931844B (en) | 2018-05-01 |
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| CN108666138B (en) * | 2017-03-29 | 2020-12-29 | 东莞东阳光科研发有限公司 | Electrolyte for 650-plus 700V aluminum electrolytic capacitor |
| CN108878151B (en) * | 2017-05-09 | 2021-03-26 | 东莞市东阳光电容器有限公司 | 700-750V aluminum electrolytic capacitor electrolyte |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255714A (en) * | 1998-11-26 | 2000-06-07 | 冈村制油株式会社 | Long-chain diacid compsn. and electrolyte made therefrom |
| CN101206955A (en) * | 2007-12-14 | 2008-06-25 | 广州市二轻工业科学技术研究所 | Branched chain polybasic carboxylic acid ammonium salt mixture as well as preparation method and application thereof |
| JP2011219387A (en) * | 2010-04-06 | 2011-11-04 | Kaneka Corp | Method for producing ionic liquid |
| CN102280252A (en) * | 2011-05-31 | 2011-12-14 | 肇庆绿宝石电子有限公司 | Method for reducing flow of leakage current of aluminum electrolytic capacitor |
-
2016
- 2016-04-22 CN CN201610253257.7A patent/CN105931844B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1255714A (en) * | 1998-11-26 | 2000-06-07 | 冈村制油株式会社 | Long-chain diacid compsn. and electrolyte made therefrom |
| CN101206955A (en) * | 2007-12-14 | 2008-06-25 | 广州市二轻工业科学技术研究所 | Branched chain polybasic carboxylic acid ammonium salt mixture as well as preparation method and application thereof |
| JP2011219387A (en) * | 2010-04-06 | 2011-11-04 | Kaneka Corp | Method for producing ionic liquid |
| CN102280252A (en) * | 2011-05-31 | 2011-12-14 | 肇庆绿宝石电子有限公司 | Method for reducing flow of leakage current of aluminum electrolytic capacitor |
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