CN107887164B - Working electrolyte of 130 ℃ high-voltage aluminum electrolytic capacitor and preparation method - Google Patents
Working electrolyte of 130 ℃ high-voltage aluminum electrolytic capacitor and preparation method Download PDFInfo
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- CN107887164B CN107887164B CN201611057464.1A CN201611057464A CN107887164B CN 107887164 B CN107887164 B CN 107887164B CN 201611057464 A CN201611057464 A CN 201611057464A CN 107887164 B CN107887164 B CN 107887164B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 66
- 239000003792 electrolyte Substances 0.000 title claims abstract description 51
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000001257 hydrogen Substances 0.000 claims abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 33
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 22
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 13
- GJYJYFHBOBUTBY-UHFFFAOYSA-N alpha-camphorene Chemical compound CC(C)=CCCC(=C)C1CCC(CCC=C(C)C)=CC1 GJYJYFHBOBUTBY-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 229940067597 azelate Drugs 0.000 claims description 9
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims description 7
- 229910052682 stishovite Inorganic materials 0.000 claims description 7
- 229910052905 tridymite Inorganic materials 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- GPEVMRFAFMVKHK-UHFFFAOYSA-N azane;dodecanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCCCC([O-])=O GPEVMRFAFMVKHK-UHFFFAOYSA-N 0.000 claims description 2
- HNSDLXPSAYFUHK-UHFFFAOYSA-N 1,4-bis(2-ethylhexyl) sulfosuccinate Chemical compound CCCCC(CC)COC(=O)CC(S(O)(=O)=O)C(=O)OCC(CC)CCCC HNSDLXPSAYFUHK-UHFFFAOYSA-N 0.000 claims 1
- 229940018602 docusate Drugs 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 8
- 239000003381 stabilizer Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 239000003623 enhancer Substances 0.000 description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- ZBRFXUYITSEQPN-FLGDTWEASA-N C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+] Chemical compound C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].C(CCCCCCC\C=C/CCCCCCCC)(=O)[O-].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+] ZBRFXUYITSEQPN-FLGDTWEASA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- -1 ammonium nonanedioate hydrogen Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
Landscapes
- 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)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to the technical field of electronic chemical industry, in particular to a working electrolyte of a 130 ℃ high-voltage aluminum electrolytic capacitor and a preparation method thereof, wherein a solvent system, a flash voltage improver, a solute, a hydrogen absorbent and a stabilizer are reasonably selected and matched, so that the prepared electrolyte has high conductivity, the flash voltage reaches above 485V, the capacitor prepared by using the working electrolyte has strong ripple resistance, the service life of the capacitor reaches above 3000h at 130 ℃, and the working electrolyte can be widely applied to electronic products such as LEDs, energy-saving lamps and the like.
Description
Technical Field
The invention relates to the technical field of electronics and chemical engineering, in particular to a working electrolyte of a 130 ℃ high-voltage aluminum electrolytic capacitor and a preparation method thereof.
Background
With the rapid development of electronic technology, the volume of electronic products is smaller and smaller, such as LED driving power supplies, automobile electronics, chargers, electronic ballasts, and other products, and the requirements on high temperature resistance of aluminum electrolytic capacitors are higher and higher correspondingly, especially for high voltage aluminum electrolytic capacitors. Because ripple current through the condenser is great, the condenser itself can generate heat and long-time continuous operation for electronic product is more and more strict to the requirement of condenser, mainly reflects: small size, high-temperature resistance in high-pressure working environment and long service life.
The working electrolyte of the aluminum electrolytic capacitor is used as the true cathode of the aluminum electrolytic capacitor, and the characteristics of the working electrolyte play a determining role in the aluminum electrolytic capacitor. In the prior art, the working electrolyte is generally prepared by a solvent, a solute and various additives in proportion, wherein the solvent comprises pure water, ethylene glycol, gamma-butyrolactone, diethylene glycol and the like, the solute comprises organic carboxylic acid and salts thereof, and the additives comprise a flash voltage improver, a leakage current inhibitor, a hydrogen suppressor, a waterproof agent, a flame retardant and the like. However, for the capacitor to work under specific conditions, it is necessary to reasonably select the solvent system, solute composition and various additives in the working electrolyte, otherwise, the performance of the capacitor in some aspects will be poor, and the product production requirements will be difficult to meet.
For example: the requirements of the high-voltage aluminum electrolytic capacitor on working electrolyte are as follows: the capacitor has the advantages that the capacitor is required to have higher sparking voltage, normal work under a high-voltage condition is guaranteed, and the phenomenon that the bottom of the capacitor is failed and even breakdown explosion is caused due to the fact that the sparking voltage of working electrolyte is too low and the sparking occurs is avoided. In the working electrolyte for the high-voltage aluminum electrolytic capacitor, a sparking voltage enhancer is often required to be added, the commonly used sparking voltage enhancers comprise polyethylene glycol (PEG), polyvinyl alcohol (PVC), polymerized fatty acid, nano SiO2 and the like, and the addition of which sparking voltage enhancer as a formula also needs to be reasonably selected, otherwise, the quality of the product still cannot be met.
In addition, the medium of the aluminum electrolytic capacitor is an alumina oxide film, and the working electrolyte can completely cover and permeate the alumina oxide film, so that the quality of the medium is also the key for the quality of the aluminum electrolytic capacitor. The working electrolyte contains moisture which is easy to generate hydration reaction with an alumina oxide film to cause the performance of the aluminum electrolytic capacitor to be deteriorated in advance, so that the service life of the product is shortened, and in the process, a waterproof mixture is often added to solve the problem; meanwhile, in the working process of the aluminum electrolytic capacitor, the anode alumina oxide film can be automatically repaired, hydrogen can be generated in the process of repairing the alumina oxide film, more gas is generated, the higher the pressure in the capacitor is, and finally the capacitor is blown to the bottom until the explosion-proof valve is opened and fails.
Based on this, in the preparation process of the working electrolyte of the aluminum electrolytic capacitor, the reasonable selection of a solvent system, solute composition and other additives becomes a key, and the quality of the working electrolyte of the aluminum electrolytic capacitor can be directly influenced by the selection result of the substances.
Therefore, the characteristics of the capacitor used in the high-temperature environment of 130 ℃ are researched, and the raw material components and the proportion of the working electrolyte of the aluminum electrolytic capacitor are researched, so that after the obtained working electrolyte is used for preparing the capacitor, the direct-current voltage of the capacitor is 400V under the temperature condition of 130 ℃, the service life of the capacitor reaches more than 3000h, and a new idea is provided for the preparation of the working electrolyte of the aluminum electrolytic capacitor.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a working electrolyte of a 130 ℃ high-voltage aluminum electrolytic capacitor and a preparation method thereof.
The method is realized by the following technical scheme:
a working electrolyte of a 130 ℃ high-voltage aluminum electrolytic capacitor comprises, by mass, 50-75% of ethylene glycol, 5-20% of gamma-butyrolactone, 8-30% of ammonium 1, 6-dodecanedioate,2-6% of ammonium hydrogen azelate, 0.1-2% of m-metanitroacetophenone, 0.1-2% of polyvinyl alcohol, 0.1-2% of ammonium hypophosphite and nano-S iO21 to 5 percent. The solvent system is formed by ethylene glycol and gamma-butyrolactone, so that the solvent system has good low-temperature characteristic, high boiling point and low saturated vapor pressure; polyvinyl alcohol and nano silicon dioxide are used as the sparking voltage improver, so that the sparking voltage reaches above 485V, 1, 6-ammonium dodecanedioate and ammonium azelate are used as solutes, the solubility is high, the conductivity of the electrolyte is high, and the ripple resistance is strong; the m-metanitroacetophenone is used as a hydrogen absorbing agent, so that hydrogen generated when an aluminum oxide film is repaired in the aging and working processes of the aluminum electrolytic capacitor can be effectively absorbed; ammonium hypophosphite is used as a stabilizer, so that voltage resistance instability of the aluminum electrolytic capacitor caused by voltage mutation in the working process of the electrolyte is prevented, and large rise of leakage current of the aluminum electrolytic capacitor after long-time storage can be avoided. And through the reasonable selection and matching of the solvent system, the sparking voltage enhancer, the solute, the hydrogen absorbing agent and the stabilizer and the limitation of respective proportion amount, the performance of the working electrolyte is effectively improved, so that after the working electrolyte is used for preparing the capacitor, the service life of the capacitor can be effectively prolonged to more than 3000h under the conditions of 130 ℃ temperature and 400V direct current voltage, the service life of the capacitor is effectively prolonged, and the high temperature resistance of the capacitor is enhanced.
Preferably, the raw material components comprise, by mass, 65% of ethylene glycol, 5% of gamma-butyrolactone, 20% of 1, 6-ammonium dodecanedioate, 4.5% of ammonium nonanedioate hydrogen, 1% of m-metanitroacetophenone, 1.5% of polyvinyl alcohol, 0.5% of ammonium hypophosphite and nano SiO21.5％。
Preferably, the raw material components comprise, by mass, 55% of ethylene glycol, 10% of gamma-butyrolactone, 25% of 1, 6-ammonium dodecanedioate, 3.5% of ammonium azelate, 1.2% of m-metanitroacetophenone, 0.8% of polyvinyl alcohol, 0.5% of ammonium hypophosphite and nano SiO24％。
A preparation method of a working electrolyte of a 130 ℃ high-voltage aluminum electrolytic capacitor comprises the steps of pouring weighed ethylene glycol and gamma-butyrolactone into a stainless steel container, fully mixing, heating to 140-160 ℃, and adding polymerFully stirring vinyl alcohol until the vinyl alcohol is completely dissolved, then cooling to 110 ℃, and sequentially adding 1,6 ammonium dodecanedioate, ammonium hydrogen azelate, m-metanitroacetophenone and nano SiO2And stirring until the solution is completely dissolved, finally adding ammonium hypophosphite, stirring for dissolving, and naturally cooling to obtain the working electrolyte of the high-voltage aluminum electrolytic capacitor.
The 130 ℃ high-voltage aluminum electrolytic capacitor working electrolyte is particularly suitable for preparing capacitors used in LED illumination, energy-saving lamps, automobile electronics, chargers, ballasts or adapters.
The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor prepared in the embodiment 1 or the embodiment 2 is used for manufacturing the aluminum electrolytic capacitor, the specification is 400V22uF, phi 13 gamma 20, 400V direct current voltage is applied under the condition of 130 ℃, the time is 3000h, and the test result is shown in the table 1:
TABLE 1
| Performance of | Require that | Data after the test | Results |
| Change in capacitance | ±20％ | -9.0％～-12.0％ | Qualified |
| Loss of power | ≤0.40 | 0.124～0.165 | Qualified |
| Leakage current | ≤186μA | 6～12μA | Qualified |
From the results in table 1, it can be seen that the high-voltage aluminum electrolytic capacitor made of the working electrolyte of example 1 or example 2 has normal test data and appearance after applying a dc 400v voltage at 130 ℃ for 3000h, and reaches the design target.
The electrolyte prepared by the working electrolyte has high conductivity, the sparking voltage reaches above 485V, the capacitor prepared by the working electrolyte has strong ripple resistance, the service life of the capacitor reaches above 3000h at 130 ℃, and the working electrolyte can be widely applied to electronic products such as LEDs, energy-saving lamps and the like.
Detailed Description
The technical solution of the present invention is further defined below with reference to the specific embodiments, but the scope of the claims is not limited to the description.
The preparation method of the working electrolyte of the aluminum electrolytic capacitor in the following embodiment is as follows: pouring weighed ethylene glycol and gamma-butyrolactone into a stainless steel container, fully mixing, heating to 140-160 ℃, adding polyvinyl alcohol, fully stirring until the polyvinyl alcohol is completely dissolved, cooling to 110 ℃, and sequentially adding 1,6 ammonium dodecaoleate, ammonium hydrogen azelate, m-metanitroacetophenone and nano SiO2And stirring until the solution is completely dissolved, finally adding ammonium hypophosphite, stirring for dissolving, and naturally cooling to obtain the working electrolyte of the high-voltage aluminum electrolytic capacitor. The ammonium 1, 6-dodecanedioate is preferably an EG solution having a concentration of 20% by mass. As the polyvinyl alcohol, polyvinyl alcohol 105 is preferably used.
Example 1
The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor comprises the following raw materials in percentage by mass as shown in table 2:
TABLE 2
Example 2
The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor is shown in table 3, wherein the numerical values in table 3 are calculated by mass percent:
TABLE 3
Example 3
The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor comprises the following raw materials in percentage by mass as shown in Table 4:
TABLE 4
Example 4
The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor is shown in table 5, wherein the numerical values in table 5 are calculated by mass percent:
TABLE 5
Example 5
The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor comprises the following raw materials in percentage by mass as shown in table 6:
TABLE 6
Example 6
The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor comprises the following raw materials in percentage by mass as shown in Table 7:
TABLE 7
The above embodiments are only for explaining and explaining the present invention, and do not further limit the technical solution of the present invention, and the modifications made by those skilled in the art without significant substantive features and significant advances are all within the scope of the present invention.
Claims (5)
1. The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor is characterized by comprising, by mass, 50-75% of ethylene glycol, 5-20% of gamma-butyrolactone, 8-30% of 1, 6-ammonium docusate, 2-6% of ammonium hydrogen azelate, 0.1-2% of m-metanitroacetophenone, 0.1-2% of polyvinyl alcohol, 0.1-2% of ammonium hypophosphite, and nano SiO221-5％。
2. The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor according to claim 1, wherein the raw materials comprise, by mass, 65% of ethylene glycol, 5% of gamma-butyrolactone, 20% of ammonium 1, 6-dodecanedioate, 4.5% of ammonium hydrogen azelate, 1% of m-metanitroacetophenone, 1.5% of polyvinyl alcohol, 0.5% of ammonium hypophosphite, and nano-SiO22.5％。
3. The working electrolyte of the 130 ℃ high-voltage aluminum electrolytic capacitor according to claim 1, wherein the raw materials comprise, by mass, 55% of ethylene glycol, 10% of gamma-butyrolactone, 25% of ammonium 1, 6-dodecanedioate, 3.5% of ammonium hydrogen azelate, 1.2% of m-metanitroacetophenone, 0.8% of polyvinyl alcohol, 0.5% of ammonium hypophosphite, nano SiO224％。
4. The method for preparing the working electrolyte of the high-voltage aluminum electrolytic capacitor at the temperature of 130 ℃ according to any one of claims 1 to 3, wherein the weighed ethylene glycol and gamma-butyrolactone are poured into a stainless steel container and fully mixedHeating to 140-160 ℃, adding polyvinyl alcohol, fully stirring until the polyvinyl alcohol is completely dissolved, cooling to 110 ℃, and sequentially adding 1,6 ammonium dodecanedioate, ammonium hydrogen azelate, m-metanitroacetophenone and nano SiO2And stirring until the solution is completely dissolved, finally adding ammonium hypophosphite, stirring for dissolving, and naturally cooling to obtain the working electrolyte of the high-voltage aluminum electrolytic capacitor.
5. The 130 ℃ high-voltage aluminum electrolytic capacitor working electrolyte as defined in any one of claims 1 to 3 or the 130 ℃ high-voltage aluminum electrolytic capacitor working electrolyte prepared by the method as defined in claim 4 is used for preparing a capacitor product used under the conditions of 130 ℃ temperature and 400V voltage.
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Denomination of invention: A working electrolyte and preparation method for 130 degC high-voltage aluminum electrolytic capacitors Granted publication date: 20200317 Pledgee: Industrial and Commercial Bank of China Limited Hezhou Branch Pledgor: GUANGXI JICON ELECTRONICS TECHNOLOGY CO.,LTD. Registration number: Y2024980031657 |
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