CN105469988A - High-conductivity and high-sparking electrolyte for aluminum electrolytic capacitor and preparation method therefor - Google Patents
High-conductivity and high-sparking electrolyte for aluminum electrolytic capacitor and preparation method therefor Download PDFInfo
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- CN105469988A CN105469988A CN201510973326.7A CN201510973326A CN105469988A CN 105469988 A CN105469988 A CN 105469988A CN 201510973326 A CN201510973326 A CN 201510973326A CN 105469988 A CN105469988 A CN 105469988A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 59
- 239000003792 electrolyte Substances 0.000 title claims abstract description 57
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title abstract description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 113
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims abstract description 69
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 67
- OTRAYOBSWCVTIN-UHFFFAOYSA-N OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N Chemical compound OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N OTRAYOBSWCVTIN-UHFFFAOYSA-N 0.000 claims abstract description 35
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- GJYJYFHBOBUTBY-UHFFFAOYSA-N alpha-camphorene Chemical compound CC(C)=CCCC(=C)C1CCC(CCC=C(C)C)=CC1 GJYJYFHBOBUTBY-UHFFFAOYSA-N 0.000 claims abstract description 34
- SATJMZAWJRWBRX-UHFFFAOYSA-N azane;decanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCC([O-])=O SATJMZAWJRWBRX-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 34
- 239000001257 hydrogen Substances 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 239000002253 acid Substances 0.000 claims description 35
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 33
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 12
- 239000004327 boric acid Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000003993 interaction Effects 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- GPEVMRFAFMVKHK-UHFFFAOYSA-N azane;dodecanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCCCC([O-])=O GPEVMRFAFMVKHK-UHFFFAOYSA-N 0.000 abstract 1
- 229940067597 azelate Drugs 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 7
- 239000002904 solvent Substances 0.000 description 4
- 238000009776 industrial production Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 230000032050 esterification Effects 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- -1 hydrocarbon saturated dicarboxylic acid Chemical class 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OWCLRJQYKBAMOL-UHFFFAOYSA-N 2-butyloctanedioic acid Chemical compound CCCCC(C(O)=O)CCCCCC(O)=O OWCLRJQYKBAMOL-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007086 side reaction 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
-
- 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
- H01G9/0029—Processes of manufacture
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to the technical field of electrolytes, in particular to a high-conductivity and high-sparking electrolyte for an aluminum electrolytic capacitor and a preparation method therefor. The electrolyte comprises the following raw materials in parts by weight: 4.5-6.5 parts of ammonium sebacate, 1.5-2.5 parts of ammonium hydrogen azelate, 1.5-2.5 parts of ammonium pentaborate, 13-17 parts of a sparking boosting agent, 1.5-2.5 parts of ammonium dodecanedioate, 0.2-0.3 part of ammonium hypophosphite, 0.3-0.7 part of p-nitrobenzyl alcohol and 60-85 parts of glycol. The electrolyte is prepared by means of interaction among the raw materials and by strictly controlling a weight proportion of the raw materials; the sparking voltage of the prepared electrolyte can reach 490 V and the conductivity rate of the prepared electrolyte can reach 2.4 ms/cm; and the electrolyte has good electrochemical properties, has the advantages of high conductivity and high sparking voltage, and can be applied to manufacturing of the aluminum electrolytic capacitors.
Description
Technical field
The present invention relates to technical field of electrolyte, be specifically related to a kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor and preparation method thereof.
Background technology
Aluminium electrolytic capacitor is one of base components of electronic product.Along with improving constantly and the expansion of aluminium electrolytic capacitor range of application of Quality of electronic products, higher requirement is proposed to its performance.The electronic product such as Switching Power Supply, electricity-saving lamp requires very high to the security performance of high-voltage electrolysis capacitor.In filter circuit, capacitor bears high voltage, high ripple current, if feed is unstable or apply overvoltage, can causes the destruction of capacitor, catch fire, the accident such as burning.Aluminum electrolytic capacitor electrolyte is the actual negative electrode in the whole course of work of capacitor, has material impact to the performance of capacitor, wherein: serviceability temperature scope, working life, reliability, leakage current, loss, volume change etc. play a decisive role to electrical property.
At present, known or the Working electrolyte of medium-high voltage aluminum electrolytic capacitor, have passed through following evolution: one, be main solvent with ethylene glycol, the inorganic compound such as boric acid or ammonium pentaborate is main solute.There is the low problem of conductivity in the Working electrolyte of such preparation, and boric acid and salt thereof are at high temperature easily and ethylene glycol generation esterification and generate a large amount of condensation water, the moisture of electrolyte inside is caused to raise, the vapour pressure of electrolyte increases, and in capacitor, voltage rise is high and cause capacitor valve opening to lose efficacy; Two, take ethylene glycol as main solvent, the direct-connected hydrocarbon saturated dicarboxylic acid such as azelaic acid, decanedioic acid or 12 diacid and salt thereof is adopted to be electrolyte solution, although the electrolyte of this class avoids a part of esterification, but because the solubility of linear paraffin in ethylene glycol of this class is less, cause the impedance of product larger, easily generate heat under large ripple and make solvent evaporates, thus generation vicious circle, cause capacitor withered and lost efficacy, at high temperature easily there is amidatioon side reaction generation water in linear paraffin simultaneously, also easily causes capacitor early failure; Three, some branched acid or its salt is adopted, as 1 of report, 6-DDA and salt thereof and 2-butyl suberic acid and salt thereof, the solubility of this kind of branched carboxylic acid and salt pair solvent thereof increases than linear paraffin, thus effect is created to a certain extent, but meanwhile, this kind of acid or its salt mainly rely on import, thus cost is high and restraining factors are more.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, the object of the present invention is to provide a kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, this electrolyte flash over voltage can reach 490V, conductivity can reach 2.4ms/cm, there is good electrochemical properties, there is the advantage of high conductivity and high flash over voltage, can be applicable to the manufacture of aluminium electrolytic capacitor.
Another object of the present invention is to the preparation method providing a kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, this preparation method's technique is simple, and convenient operation and control, steady quality, production efficiency is high, and production cost is low, can large-scale industrial production.
Object of the present invention is achieved through the following technical solutions: a kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, and it is made up of the raw material of following weight portion:
Ammonium sebacate 4.5-6.5 part
Azelaic acid hydrogen ammonium 1.5-2.5 part
Ammonium pentaborate 1.5-2.5 part
Scintillation elevator 13-17 part
Dodecandioic acid ammonium 1.5-2.5 part
Ammonium hypophosphite 0.2-0.3 part
P nitrobenzyl alcohol 0.3-0.7 part
Ethylene glycol 60-85 part.
Electrolyte of the present invention is by adopting the interaction between above-mentioned raw materials, and the strict weight proportion controlling each raw material, obtained electrolyte flash over voltage can reach 490V, conductivity can reach 2.4ms/cm, there is good electrochemical properties, there is the advantage of high conductivity and high flash over voltage, can be applicable to the manufacture of aluminium electrolytic capacitor.
Preferably, it is made up of the raw material of following weight portion:
Ammonium sebacate 4.5-5.5 part
Azelaic acid hydrogen ammonium 1.5-2 part
Ammonium pentaborate 1.5-2 part
Scintillation elevator 13-15 part
Dodecandioic acid ammonium 1.5-2 part
Ammonium hypophosphite 0.2-0.25 part
P nitrobenzyl alcohol 0.3-0.5 part
Ethylene glycol 60-72.8 part.
Another is preferred, and it is made up of the raw material of following weight portion:
Ammonium sebacate 5-6 part
Azelaic acid hydrogen ammonium 1.8-2.2 part
Ammonium pentaborate 1.8-2.2 part
Scintillation elevator 14-16 part
Dodecandioic acid ammonium 1.8-2.2 part
Ammonium hypophosphite 0.22-0.28 part
P nitrobenzyl alcohol 0.4-0.6 part
Ethylene glycol 65-80 part.
Another is preferred, and it is made up of the raw material of following weight portion:
Ammonium sebacate 5.5-6.5 part
Azelaic acid hydrogen ammonium 2-2.5 part
Ammonium pentaborate 2-2.5 part
Scintillation elevator 15-17 part
Dodecandioic acid ammonium 2-2.5 part
Ammonium hypophosphite 0.25-0.3 part
P nitrobenzyl alcohol 0.5-0.7 part
Ethylene glycol 72.8-85 part.
More preferred, it is made up of the raw material of following weight portion:
Ammonium sebacate 5 parts
Azelaic acid hydrogen ammonium 1.8 parts
Ammonium pentaborate 1.8 parts
Scintillation elevator 14 parts
Dodecandioic acid ammonium 1.8 parts
Ammonium hypophosphite 0.22 part
P nitrobenzyl alcohol 0.4 part
Ethylene glycol 65 parts.
Another is preferred, and it is made up of the raw material of following weight portion:
Ammonium sebacate 5.5 parts
Azelaic acid hydrogen ammonium 2 parts
Ammonium pentaborate 2 parts
Scintillation elevator 15 parts
Dodecandioic acid ammonium 2 parts
Ammonium hypophosphite 0.25 part
P nitrobenzyl alcohol 0.5 part
Ethylene glycol 72.8 parts.
Another is preferred, and it is made up of the raw material of following weight portion:
Ammonium sebacate 6 parts
Azelaic acid hydrogen ammonium 2.2 parts
Ammonium pentaborate 2.2 parts
Scintillation elevator 16 parts
Dodecandioic acid ammonium 2.2 parts
Ammonium hypophosphite 0.28 part
P nitrobenzyl alcohol 0.6 part
Ethylene glycol 80 parts.
Preferably, described scintillation elevator reacts the obtained colloidal cpd with stereochemical structure by PVA and boric acid with weight ratio 1:1.8-2.2.The present invention is by adopting PVA and boric acid using the obtained colloidal cpd with stereochemical structure of weight ratio 1:1.8-2.2 reaction as scintillation elevator, and obtained electrolyte has higher flash over voltage; While can also ensureing that capacitor height is withstand voltage, make aluminium electrolytic capacitor still can keep preferably performance after long-term use, achieve the long-life.More preferred, described scintillation elevator reacts the obtained colloidal cpd with stereochemical structure by PVA and boric acid with weight ratio 1:2.
Another object of the present invention is achieved through the following technical solutions: a kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, comprises the steps:
(1) ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate, scintillation elevator, dodecandioic acid ammonium, ammonium hypophosphite, p nitrobenzyl alcohol and ethylene glycol is taken by the weight proportion of raw material;
(2) ethylene glycol, scintillation elevator, ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate and dodecandioic acid ammonium are mixed, be heated to 95-105 DEG C and stir 25-35min, then be warmed up to 120-130 DEG C of insulation 50-70min, be chilled to 85-95 DEG C;
(3) add ammonium hypophosphite and p nitrobenzyl alcohol again, be stirred to and be cooled to room temperature, obtained high conductance height scintillation electrolyte for aluminum electrolytic capacitor.
Preparation method's technique of the present invention is simple, and convenient operation and control, steady quality, production efficiency is high, and production cost is low, can large-scale industrial production.
Beneficial effect of the present invention is: electrolyte flash over voltage of the present invention can reach 490V, conductivity can reach 2.4ms/cm, there is good electrochemical properties, there is the advantage of high conductivity and high flash over voltage, can be applicable to the manufacture of aluminium electrolytic capacitor.
Electrolyte of the present invention also tool has the following advantages:
1, achieve and support that aluminium electrolytic capacitor can reliable continuation work 10000 hours the above object under the ambient temperature of-55 DEG C ~+155 DEG C.
2, larger ripple current can be born, be applicable to various large scale electronic equipment; In the endurance test of load life, have passed the examination of 105 DEG C of load 8000h during ripple current 1A, do not occur that lead-in wire burn into punctures, explosion-proof valve ftractures the situations such as even burning, there is high reliability.
3, substantially increase security performance and the useful life of capacitor, capacitor can not be blasted, explosion-proof valve cracking even burning etc. bad, rate of finished products is high, can reach more than 98%.
Preparation method's technique of the present invention is simple, and convenient operation and control, steady quality, production efficiency is high, and production cost is low, can large-scale industrial production.
Embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment, the present invention is further illustrated, and the content that execution mode is mentioned not is limitation of the invention.
Embodiment 1
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, it is made up of the raw material of following weight portion:
Ammonium sebacate 4.5 parts
Azelaic acid hydrogen ammonium 1.5 parts
Ammonium pentaborate 1.5 parts
Scintillation elevator 13 parts
Dodecandioic acid ammonium 1.5 parts
Ammonium hypophosphite 0.2 part
P nitrobenzyl alcohol 0.3 part
Ethylene glycol 60 parts.
Described scintillation elevator reacts the obtained colloidal cpd with stereochemical structure by PVA and boric acid with weight ratio 1:1.8.
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, comprises the steps:
(1) ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate, scintillation elevator, dodecandioic acid ammonium, ammonium hypophosphite, p nitrobenzyl alcohol and ethylene glycol is taken by the weight proportion of raw material;
(2) ethylene glycol, scintillation elevator, ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate and dodecandioic acid ammonium are mixed, be heated to 95 DEG C and stir 35min, then be warmed up to 120 DEG C of insulation 70min, be chilled to 85 DEG C;
(3) add ammonium hypophosphite and p nitrobenzyl alcohol again, be stirred to and be cooled to room temperature, obtained high conductance height scintillation electrolyte for aluminum electrolytic capacitor.
Embodiment 2
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, it is made up of the raw material of following weight portion:
Ammonium sebacate 5 parts
Azelaic acid hydrogen ammonium 1.8 parts
Ammonium pentaborate 1.8 parts
Scintillation elevator 14 parts
Dodecandioic acid ammonium 1.8 parts
Ammonium hypophosphite 0.22 part
P nitrobenzyl alcohol 0.4 part
Ethylene glycol 65 parts.
Described scintillation elevator reacts the obtained colloidal cpd with stereochemical structure by PVA and boric acid with weight ratio 1:1.9.
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, comprises the steps:
(1) ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate, scintillation elevator, dodecandioic acid ammonium, ammonium hypophosphite, p nitrobenzyl alcohol and ethylene glycol is taken by the weight proportion of raw material;
(2) ethylene glycol, scintillation elevator, ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate and dodecandioic acid ammonium are mixed, be heated to 98 DEG C and stir 32min, then be warmed up to 122 DEG C of insulation 68min, be chilled to 88 DEG C;
(3) add ammonium hypophosphite and p nitrobenzyl alcohol again, be stirred to and be cooled to room temperature, obtained high conductance height scintillation electrolyte for aluminum electrolytic capacitor.
Embodiment 3
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, it is made up of the raw material of following weight portion:
Ammonium sebacate 5.5 parts
Azelaic acid hydrogen ammonium 2 parts
Ammonium pentaborate 2 parts
Scintillation elevator 15 parts
Dodecandioic acid ammonium 2 parts
Ammonium hypophosphite 0.25 part
P nitrobenzyl alcohol 0.5 part
Ethylene glycol 72.8 parts.
Described scintillation elevator reacts the obtained colloidal cpd with stereochemical structure by PVA and boric acid with weight ratio 1:2.
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, comprises the steps:
(1) ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate, scintillation elevator, dodecandioic acid ammonium, ammonium hypophosphite, p nitrobenzyl alcohol and ethylene glycol is taken by the weight proportion of raw material;
(2) ethylene glycol, scintillation elevator, ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate and dodecandioic acid ammonium are mixed, be heated to 100 DEG C and stir 30min, then be warmed up to 125 DEG C of insulation 60min, be chilled to 90 DEG C;
(3) add ammonium hypophosphite and p nitrobenzyl alcohol again, be stirred to and be cooled to room temperature, obtained high conductance height scintillation electrolyte for aluminum electrolytic capacitor.
Embodiment 4
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, it is made up of the raw material of following weight portion:
Ammonium sebacate 6 parts
Azelaic acid hydrogen ammonium 2.2 parts
Ammonium pentaborate 2.2 parts
Scintillation elevator 16 parts
Dodecandioic acid ammonium 2.2 parts
Ammonium hypophosphite 0.28 part
P nitrobenzyl alcohol 0.6 part
Ethylene glycol 80 parts.
Described scintillation elevator reacts the obtained colloidal cpd with stereochemical structure by PVA and boric acid with weight ratio 1:2.1.
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, comprises the steps:
(1) ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate, scintillation elevator, dodecandioic acid ammonium, ammonium hypophosphite, p nitrobenzyl alcohol and ethylene glycol is taken by the weight proportion of raw material;
(2) ethylene glycol, scintillation elevator, ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate and dodecandioic acid ammonium are mixed, be heated to 102 DEG C and stir 28min, then be warmed up to 128 DEG C of insulation 55min, be chilled to 92 DEG C;
(3) add ammonium hypophosphite and p nitrobenzyl alcohol again, be stirred to and be cooled to room temperature, obtained high conductance height scintillation electrolyte for aluminum electrolytic capacitor.
Embodiment 5
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, it is made up of the raw material of following weight portion:
Ammonium sebacate 6.5 parts
Azelaic acid hydrogen ammonium 2.5 parts
Ammonium pentaborate 2.5 parts
Scintillation elevator 17 parts
Dodecandioic acid ammonium 2.5 parts
Ammonium hypophosphite 0.3 part
P nitrobenzyl alcohol 0.7 part
Ethylene glycol 85 parts.
Described scintillation elevator reacts the obtained colloidal cpd with stereochemical structure by PVA and boric acid with weight ratio 1:2.2.
A kind of high conductance height scintillation electrolyte for aluminum electrolytic capacitor, comprises the steps:
(1) ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate, scintillation elevator, dodecandioic acid ammonium, ammonium hypophosphite, p nitrobenzyl alcohol and ethylene glycol is taken by the weight proportion of raw material;
(2) ethylene glycol, scintillation elevator, ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate and dodecandioic acid ammonium are mixed, be heated to 105 DEG C and stir 25min, then be warmed up to 130 DEG C of insulation 50min, be chilled to 95 DEG C;
(3) add ammonium hypophosphite and p nitrobenzyl alcohol again, be stirred to and be cooled to room temperature, obtained high conductance height scintillation electrolyte for aluminum electrolytic capacitor.
The performance test of the electrolyte that embodiment 1-5 obtains is as shown in table 1:
Table 1
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Flash over voltage (V) | 490 | 510 | 530 | 520 | 500 |
| Conductivity (ms/cm) | 2.4 | 2.8 | 3.2 | 3.0 | 2.6 |
As can be seen from Table 1, electrolyte flash over voltage of the present invention can reach 490V, and conductivity can reach 2.4ms/cm, has good electrochemical properties, has the advantage of high conductivity and high flash over voltage, can be applicable to the manufacture of aluminium electrolytic capacitor.
And the aluminium electrolytic capacitor adopting electrolyte of the present invention to obtain can reliably continuation work more than 10000 hours under the ambient temperature of-55 DEG C ~+155 DEG C, have have stable high-temperature performance, long-life feature.
Above-described embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Claims (10)
1. a high conductance height scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: it is made up of the raw material of following weight portion:
Ammonium sebacate 4.5-6.5 part
Azelaic acid hydrogen ammonium 1.5-2.5 part
Ammonium pentaborate 1.5-2.5 part
Scintillation elevator 13-17 part
Dodecandioic acid ammonium 1.5-2.5 part
Ammonium hypophosphite 0.2-0.3 part
P nitrobenzyl alcohol 0.3-0.7 part
Ethylene glycol 60-85 part.
2. one according to claim 1 high conductance height scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: it is made up of the raw material of following weight portion:
Ammonium sebacate 4.5-5.5 part
Azelaic acid hydrogen ammonium 1.5-2 part
Ammonium pentaborate 1.5-2 part
Scintillation elevator 13-15 part
Dodecandioic acid ammonium 1.5-2 part
Ammonium hypophosphite 0.2-0.25 part
P nitrobenzyl alcohol 0.3-0.5 part
Ethylene glycol 60-72.8 part.
3. one according to claim 1 high conductance height scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: it is made up of the raw material of following weight portion:
Ammonium sebacate 5-6 part
Azelaic acid hydrogen ammonium 1.8-2.2 part
Ammonium pentaborate 1.8-2.2 part
Scintillation elevator 14-16 part
Dodecandioic acid ammonium 1.8-2.2 part
Ammonium hypophosphite 0.22-0.28 part
P nitrobenzyl alcohol 0.4-0.6 part
Ethylene glycol 65-80 part.
4. one according to claim 1 high conductance height scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: it is made up of the raw material of following weight portion:
Ammonium sebacate 5.5-6.5 part
Azelaic acid hydrogen ammonium 2-2.5 part
Ammonium pentaborate 2-2.5 part
Scintillation elevator 15-17 part
Dodecandioic acid ammonium 2-2.5 part
Ammonium hypophosphite 0.25-0.3 part
P nitrobenzyl alcohol 0.5-0.7 part
Ethylene glycol 72.8-85 part.
5. one according to claim 1 high conductance height scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: it is made up of the raw material of following weight portion:
Ammonium sebacate 5 parts
Azelaic acid hydrogen ammonium 1.8 parts
Ammonium pentaborate 1.8 parts
Scintillation elevator 14 parts
Dodecandioic acid ammonium 1.8 parts
Ammonium hypophosphite 0.22 part
P nitrobenzyl alcohol 0.4 part
Ethylene glycol 65 parts.
6. one according to claim 1 high conductance height scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: it is made up of the raw material of following weight portion:
Ammonium sebacate 5.5 parts
Azelaic acid hydrogen ammonium 2 parts
Ammonium pentaborate 2 parts
Scintillation elevator 15 parts
Dodecandioic acid ammonium 2 parts
Ammonium hypophosphite 0.25 part
P nitrobenzyl alcohol 0.5 part
Ethylene glycol 72.8 parts.
7. one according to claim 1 high conductance height scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: it is made up of the raw material of following weight portion:
Ammonium sebacate 6 parts
Azelaic acid hydrogen ammonium 2.2 parts
Ammonium pentaborate 2.2 parts
Scintillation elevator 16 parts
Dodecandioic acid ammonium 2.2 parts
Ammonium hypophosphite 0.28 part
P nitrobenzyl alcohol 0.6 part
Ethylene glycol 80 parts.
8. the high conductance height of the one according to any one of claim 1-7 scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: described scintillation elevator reacts the obtained colloidal cpd with stereochemical structure by PVA and boric acid with weight ratio 1:1.8-2.2.
9. one according to claim 8 high conductance height scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: described scintillation elevator reacts the obtained colloidal cpd with stereochemical structure by PVA and boric acid with weight ratio 1:2.
10. the high conductance height of the one as described in any one of claim 1-9 scintillation electrolyte for aluminum electrolytic capacitor, is characterized in that: comprise the steps:
(1) ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate, scintillation elevator, dodecandioic acid ammonium, ammonium hypophosphite, p nitrobenzyl alcohol and ethylene glycol is taken by the weight proportion of raw material;
(2) ethylene glycol, scintillation elevator, ammonium sebacate, azelaic acid hydrogen ammonium, ammonium pentaborate and dodecandioic acid ammonium are mixed, be heated to 95-105 DEG C and stir 25-35min, then be warmed up to 120-130 DEG C of insulation 50-70min, be chilled to 85-95 DEG C;
(3) add ammonium hypophosphite and p nitrobenzyl alcohol again, be stirred to and be cooled to room temperature, obtained high conductance height scintillation electrolyte for aluminum electrolytic capacitor.
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| CN109448993A (en) * | 2018-11-07 | 2019-03-08 | 广州金立电子有限公司 | A kind of electrolyte of aluminium electrolutic capacitor and preparation method thereof |
| CN111653430A (en) * | 2020-04-28 | 2020-09-11 | 安徽诚越电子科技有限公司 | Electrolyte for high-sparking voltage high-conductivity aluminum electrolytic capacitor and aluminum electrolytic capacitor |
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