CN108666138A - A kind of 650-700V electrolyte for aluminum electrolytic capacitor - Google Patents
A kind of 650-700V electrolyte for aluminum electrolytic capacitor Download PDFInfo
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- CN108666138A CN108666138A CN201710198404.XA CN201710198404A CN108666138A CN 108666138 A CN108666138 A CN 108666138A CN 201710198404 A CN201710198404 A CN 201710198404A CN 108666138 A CN108666138 A CN 108666138A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 30
- 239000003792 electrolyte Substances 0.000 title claims abstract description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 12
- 239000002904 solvent Substances 0.000 claims abstract description 17
- 239000000654 additive Substances 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 13
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 9
- 239000004411 aluminium Substances 0.000 claims abstract description 4
- 238000009826 distribution Methods 0.000 claims abstract description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 29
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 8
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 claims description 5
- FRPZMMHWLSIFAZ-UHFFFAOYSA-N 10-undecenoic acid Chemical compound OC(=O)CCCCCCCCC=C FRPZMMHWLSIFAZ-UHFFFAOYSA-N 0.000 claims description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 claims description 4
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 4
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 4
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical group C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 4
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 4
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229930195729 fatty acid Natural products 0.000 claims description 4
- 239000000194 fatty acid Substances 0.000 claims description 4
- 150000004665 fatty acids Chemical class 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 4
- -1 silicate compound Chemical class 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000012065 filter cake Substances 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000010189 synthetic method Methods 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 229940005561 1,4-benzoquinone Drugs 0.000 claims description 2
- RRQYJINTUHWNHW-UHFFFAOYSA-N 1-ethoxy-2-(2-ethoxyethoxy)ethane Chemical compound CCOCCOCCOCC RRQYJINTUHWNHW-UHFFFAOYSA-N 0.000 claims description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 2
- CFBYEGUGFPZCNF-UHFFFAOYSA-N 2-nitroanisole Chemical compound COC1=CC=CC=C1[N+]([O-])=O CFBYEGUGFPZCNF-UHFFFAOYSA-N 0.000 claims description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 2
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 2
- 159000000013 aluminium salts Chemical class 0.000 claims description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 2
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 claims description 2
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 2
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 2
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 claims description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 2
- KQNPFQTWMSNSAP-UHFFFAOYSA-N isobutyric acid Chemical compound CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 claims 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 claims 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims 1
- XEUCQOBUZPQUMQ-UHFFFAOYSA-N Glycolone Chemical compound COC1=C(CC=C(C)C)C(=O)NC2=C1C=CC=C2OC XEUCQOBUZPQUMQ-UHFFFAOYSA-N 0.000 claims 1
- UWIULCYKVGIOPW-UHFFFAOYSA-N Glycolone Natural products CCOC1=C(CC=CC)C(=O)N(C)c2c(O)cccc12 UWIULCYKVGIOPW-UHFFFAOYSA-N 0.000 claims 1
- 238000007792 addition Methods 0.000 claims 1
- 235000009508 confectionery Nutrition 0.000 claims 1
- 150000004702 methyl esters Chemical class 0.000 claims 1
- 125000000636 p-nitrophenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)[N+]([O-])=O 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 7
- 238000003860 storage Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- CRWNQZTZTZWPOF-UHFFFAOYSA-N 2-methyl-4-phenylpyridine Chemical compound C1=NC(C)=CC(C=2C=CC=CC=2)=C1 CRWNQZTZTZWPOF-UHFFFAOYSA-N 0.000 description 1
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-UHFFFAOYSA-N 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010409 thin film Substances 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F216/12—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
- C08F216/14—Monomers containing only one unsaturated aliphatic radical
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The present invention provides a kind of 650 700V working electrolyte for aluminium electrolytic capacitor, including：Solute, main solvent, secondary solvent and other additives, wherein solute are the ammonium salt of high molecular polymer shown in formula (I), and range of molecular weight distributions is 50000~100000.The electrolyte formed using the ammonium salt of high molecular polymer shown in formula (I) as solute can significantly improve the flash over voltage of capacitor, capacitor produced conductivity is preferable, conductivity variations are small after high temperature is tested for a long time, high-temperature stability is more preferable, disclosure satisfy that the requirement of the ultra-high voltage aluminum electrolytic capacitor of 650V and 700V or more.
Description
Technical field
The present invention relates to capacitor electrolyte technical field, more particularly to 650-700V electrolyte for aluminum electrolytic capacitor and
Preparation method.
Background technology
Aluminium electrolutic capacitor is the essential element of various electronic products terminal, is played in the applications such as industry, power supply
Vital effect.In recent years, with new skills such as high-voltage frequency converter, electric vehicle, wind-power electricity generation and photovoltaic generation new energy
The small size in art field, the high speed development of high stable performance technologies, manufacturer propose high voltage withstanding, big ripple electricity to capacitor
The requirement of stream and extra long life.And the Working electrolyte of capacitor is referred to as " blood " of capacitor, serves not only as capacitor
Practical cathode, there is the important function for providing oxonium ion, repairing anode oxide film, and determine the operating temperature of capacitor
Range, rated voltage, fissipation factor, impedance, rated ripple current, working life etc. directly affect the performance of capacitor.
Currently, to meet the needs of novel device, the aluminium electroloysis of development voltage 650-700V and 700V or more is needed
Capacitor, to reduce series connection number, while the thin-film capacitor that price can also be replaced more expensive in certain fields, with meet market and
The demand of new equipment, and the domestic capacitor for being generally more than 500V is also in not overripened stage, especially development electricity
The product for pressing 700V or more, needs first to develop corresponding high stable electrolyte.
Invention content
In view of the above-mentioned problems, technical scheme of the present invention provides a kind of 650-700V electrolyte for aluminum electrolytic capacitor, packet
It includes：Solute, main solvent, secondary solvent and other additives, wherein solute are the ammonium salt of high molecular polymer shown in formula (I),
The range of molecular weight distributions of the formula (I) high molecular polymer is 50000~100000.
In some embodiments, each ingredient percent is in the electrolyte：
Wherein the sum of each component content percentage is equal to 100%.
In some embodiments, the main solvent is ethylene glycol；The secondary solvent is selected from ethylene glycol, ethylene glycol only son
Ether, diethylene glycol (DEG), propylene glycol, glycerine, n-butanol, n-octyl alcohol, diethylene glycol monobutyl ether, diethylene glycol dibutyl ether, diethylene glycol monomethyl ether,
It is one or more in diethylene glycol dimethyl ether, diethyl carbitol, gamma-butyrolacton, polyethylene glycol and butyl acetate.
In some embodiments, other described additives include disappear hydrogen additive, methanol additive and flash over voltage
Elevator；Wherein, the hydrogen additive that disappears is resorcinol, p-nitrophenol, p nitrobenzyl alcohol, ortho-nitroanisole and 1,4-benzoquinone
In it is one or more；The methanol additive is selected from phosphoric acid, ammonium phosphate salt, ortho phosphorous acid and its ammonium salt and silicate compound
Or its aluminium salt is one or more；The flash over voltage elevator is selected from polyethylene glycol 400-20000, polypropylene glycol, polypropylene
Alcohol, polymerized fatty acid, polymerized fatty acid ammonium and nano inorganic oxide it is one or more.
In some embodiments, the electrolyte is made of the raw material of following mass percent：
In some embodiments, the electrolyte is made of the raw material of following mass percent：
In some embodiments, the electrolyte is made of the raw material of following mass percent：
The synthetic method of high molecular polymer shown in formula (I) is also disclosed in technical scheme of the present invention, the method includes：
1) undecenoic acid, three kinds of reaction monomers of vinyl butyl ether and acrylic acid, initiator and molten are added into reaction kettle
Agent；
2) after 0.5~1h being stirred at room temperature, 75~90 DEG C are warming up to, the reaction was continued 10~48h；
3) isometric water is added dropwise into reaction kettle, is filtered after continuing 2~4h of stirring, filter cake is washed with water, and is drying to obtain
Formula (I) high molecular polymer.
In some embodiments, the initiator is selected from benzoyl peroxide, azodiisobutyronitrile, azobisisoheptonitrile
With one kind in azo-bis-iso-dimethyl；Preferably, the initiator is benzoyl peroxide.
In some embodiments, the solvent is selected from tetrahydrofuran, ethyl acetate, n,N-Dimethylformamide, anhydrous
One kind in methanol；Preferably, the solvent is n,N-Dimethylformamide.
In some embodiments, in the reaction reaction monomers undecenoic acid, vinyl butyl ether and acrylic acid mole
Than being 1:1.5~2.5:0.5~1.0.
Compared with prior art, the present invention has the following technical effects：
The present invention provides the electrolysis of the electrolytic capacitor using the ammonium salt of high molecular polymer shown in formula (I) as solute
Liquid can significantly improve the flash over voltage of capacitor, and capacitor produced conductivity is preferable, the conductance after high temperature is tested for a long time
Rate variation is small, and high-temperature stability is more preferable, disclosure satisfy that the requirement of the ultra-high voltage aluminum electrolytic capacitor of 650V and 700V or more.
Term defines
The invention is intended to cover all replacement, modification and equivalent technical solutions, they are included in as claim is fixed
In the scope of the invention of justice.Those skilled in the art will appreciate that many and similar or equivalent method and material described herein
It can be used in the practice present invention.The present invention is not limited to method described herein and material.In document, patent and the class combined
One or more or contradict in the case of (include but not limited to defined in term, terms different from the application like material
Using, described technology etc.), it is subject to the application.
It will further be appreciated that certain features of the present invention, are clearly visible, are carried out in multiple independent embodiments
Description, but can also in combination be provided in single embodiment.Conversely, the various features of the present invention, for brevity,
It is described, but can also be provided individually or with any appropriate sub-portfolio in single embodiment.
Unless otherwise stated, all scientific and technical terminologies used in the present invention have with those skilled in the art of the invention's
It is generally understood identical meaning.All patents of the present invention and public publication are integrally incorporated this hair by reference
It is bright.
Unless otherwise stated, following definition used in the present invention should be applied.For purposes of the present invention, chemical element
With periodic table of elements CAS editions and 1994 the 75th edition《Handbook of Chemistry and Physics》Unanimously.In addition, organic chemistry General Principle can
With reference to " Organic Chemistry ", Thomas Sorrell, University Science Books, Sausalito:
1999, and " March's Advanced Organic Chemistry " by Michael B.Smith and Jerry
March,John Wiley&Sons,New York:Description in 2007, entire contents are incorporated by reference into the present invention.
Term "comprising" or " comprising " are open language, that is, include the content specified by the present invention, but it is not precluded
Content in terms of him.
Term " room temperature " refers to that temperature range is 25 ± 5 DEG C.
Unless explicitly stated otherwise in contrast, otherwise, temperature of the present invention is value range.For example, " 80 DEG C of high temperature "
Indicate ranging from 80 DEG C ± 5 DEG C of temperature.
Specific implementation mode
As described below is the preferred embodiment of the present invention, and what the present invention was protected is not limited to following preferred implementation side
Formula.It should be pointed out that for those skilled in the art on the basis of this innovation and creation conceive, several deformations for making with
It improves, belongs to protection scope of the present invention.
The synthesis of formula (I) high molecular polymer ammonium salt
1) undecenoic acid (18.4g), vinyl butyl ether (20.0g), acrylic acid are added into the round-bottomed flask of 1000mL
(5.0g), while initiator benzoyl peroxide (0.48g), solvent n,N-Dimethylformamide (200g) is added；
2) 30min is stirred, is then transferred in oil bath and is warming up to 80 DEG C of sustained responses for 24 hours；
3) isometric water is added dropwise into reaction kettle, continues to filter after stirring 4h, filter cake is washed with water, and is drying to obtain formula
(I) high molecular polymer (30.9g), total recovery 80.5%；
4) formula (I) high molecular polymer after drying is configured to 20% ethylene glycol solution, and logical ammonia is at salt.
The electrolyte of comparative example and the embodiment of the present invention forms, as shown in table 1.
1 comparative example of table and embodiment electrolyte prescription
Capacitor obtained by above-mentioned electrolyte is detected, initial value is as shown in table 2.
2 initial detecting value of table
| Moisture (weight %) | Conductivity (30 DEG C, ms/cm) | Flash over voltage (V) | |
| Embodiment 1 | 1.0 | 0.45 | 691 |
| Comparative example 1 | 1.02 | 0.38 | 676 |
| Embodiment 2 | 1.02 | 0.42 | 700 |
| Comparative example 2 | 1.02 | 0.34 | 685 |
| Embodiment 3 | 0.98 | 0.40 | 718 |
| Comparative example 3 | 1.00 | 0.33 | 697 |
For electrolytic capacitor obtained by the electrolyte of the embodiment of the present invention and comparative example after 105 DEG C of high temperature storages, conductivity is special
Property and variation it is as shown in table 3.
3 high temperature storage parameter of table
Capacitor product performance parameter variations can be found from table 2 and table 3, and solute selects high molecular polymerization shown in formula (I)
Electrolytic capacitor flash over voltage obtained by the Working electrolyte of the ammonium salt system of object is higher (>=691V), and conductivity is compared with comparative example
Good, conductivity variations are significantly smaller after high temperature is tested for a long time, and high-temperature stability is more preferable.
It can be obtained from data above, the main solute of macromolecule prepared by the present invention not only meets high pressure and super-pressure
It is required that while high-temperature storage experiment after there is a phenomenon where lump gel, with traditional aluminum electrolytic capacitor electrolyte phase
Than conductivity variations are relatively small after high-temperature storage experiment.
Claims (10)
1. a kind of 650-700V electrolyte for aluminum electrolytic capacitor, including：Solute, main solvent, secondary solvent and other additives,
Wherein solute is the ammonium salt of high molecular polymer shown in formula (I),
Its range of molecular weight distributions is 50000~100000.
2. electrolyte according to claim 1, which is characterized in that the solute, main solvent, secondary solvent and other additions
The mass percent of agent is：
Wherein the sum of each component content percentage is equal to 100%.
3. electrolyte according to claim 1 or 2, which is characterized in that the main solvent is ethylene glycol；The secondary solvent
Selected from ethylene glycol, ethylene glycol monobutyl ether, diethylene glycol (DEG), propylene glycol, glycerine, n-butanol, n-octyl alcohol, diethylene glycol monobutyl ether, two sweet
Alcohol butyl oxide, diethylene glycol monomethyl ether, diethylene glycol dimethyl ether, diethyl carbitol, gamma-butyrolacton, polyethylene glycol and butyl acetate
In it is one or more.
4. electrolyte according to claim 1 or 2, which is characterized in that other described additives include the hydrogen additive, anti-of disappearing
It is hydrated additive and flash over voltage elevator；Wherein, the hydrogen additive that disappears is selected from resorcinol, p-nitrophenol, p-nitrophenyl first
It is one or more in alcohol, ortho-nitroanisole and 1,4-benzoquinone；The methanol additive is selected from phosphoric acid, ammonium phosphate salt, secondary Asia
Phosphoric acid and its ammonium salt and silicate compound or its aluminium salt it is one or more；The flash over voltage elevator is selected from polyethylene glycol
One kind or more of 400-20000, polypropylene glycol, POLYPROPYLENE GLYCOL, polymerized fatty acid, polymerized fatty acid ammonium and nano inorganic oxide
Kind.
5. electrolyte according to claim 1 or 2, which is characterized in that the mass percent of each ingredient in the electrolyte
For：
6. electrolyte according to claim 1 or 2, which is characterized in that the mass percent of each ingredient in the electrolyte
For：
7. electrolyte according to claim 1 or 2, which is characterized in that the mass percent of each ingredient in the electrolyte
For：
8. a kind of using aluminium electrolutic capacitor made of electrolyte described in any one of claim 1~7 claim.
9. the synthetic method of high molecular polymer shown in a kind of formula as described in claim 1 (I), including：
1) undecenoic acid, three kinds of reaction monomers of vinyl butyl ether and acrylic acid, initiator and solvent are added into reaction kettle；
2) after 0.5~1h being stirred at room temperature, 75~90 DEG C are warming up to, the reaction was continued 10~48h；
3) isometric water is added dropwise into reaction kettle, is filtered after continuing 2~4h of stirring, filter cake is washed with water, and is drying to obtain；
Wherein, the initiator is selected from benzoyl peroxide, two isobutyric acid two of azodiisobutyronitrile, azobisisoheptonitrile and azo
One kind in methyl esters；
The one kind of the solvent in tetrahydrofuran, ethyl acetate, N,N-dimethylformamide and absolute methanol.
10. the synthetic method of high molecular polymer shown in the formula (I) according to claim 9, which is characterized in that institute
The molar ratio for stating reaction monomers undecenoic acid, vinyl butyl ether and acrylic acid is 1:1.5~2.5:0.5~1.0.
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| CN110931256A (en) * | 2019-11-29 | 2020-03-27 | 南通瑞达电子材料有限公司 | Electrolyte for high-voltage-resistant aluminum electrolytic capacitor and preparation method thereof |
| CN111146003A (en) * | 2020-01-14 | 2020-05-12 | 东莞台容电子有限公司 | 600V high-voltage low-impedance electrolytic capacitor working electrolyte and manufacturing method thereof |
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