CN105405658A - Pure inorganic acid formation process for positive electrode foil for high-voltage bolt type aluminium electrolytic capacitor - Google Patents
Pure inorganic acid formation process for positive electrode foil for high-voltage bolt type aluminium electrolytic capacitor Download PDFInfo
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- CN105405658A CN105405658A CN201510858433.5A CN201510858433A CN105405658A CN 105405658 A CN105405658 A CN 105405658A CN 201510858433 A CN201510858433 A CN 201510858433A CN 105405658 A CN105405658 A CN 105405658A
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- 239000011888 foil Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 67
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 56
- 230000008569 process Effects 0.000 title claims abstract description 50
- 239000003990 capacitor Substances 0.000 title claims abstract description 48
- 150000007522 mineralic acids Chemical class 0.000 title claims abstract description 23
- 239000004411 aluminium Substances 0.000 title abstract description 15
- 230000015572 biosynthetic process Effects 0.000 title abstract description 9
- 239000005030 aluminium foil Substances 0.000 claims abstract description 112
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000004327 boric acid Substances 0.000 claims abstract description 50
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 39
- 239000010452 phosphate Substances 0.000 claims abstract description 39
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 37
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 16
- 238000007598 dipping method Methods 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims description 51
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 39
- 238000002203 pretreatment Methods 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 29
- 238000005516 engineering process Methods 0.000 claims description 28
- 238000012958 reprocessing Methods 0.000 claims description 26
- 238000003786 synthesis reaction Methods 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 21
- 238000001354 calcination Methods 0.000 claims description 16
- 150000001991 dicarboxylic acids Chemical class 0.000 claims description 15
- 238000005470 impregnation Methods 0.000 claims description 13
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 11
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 11
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 8
- 238000006424 Flood reaction Methods 0.000 claims description 5
- 238000006703 hydration reaction Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 2
- 230000036571 hydration Effects 0.000 abstract description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract 1
- 238000010306 acid treatment Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 123
- 230000000694 effects Effects 0.000 description 14
- 150000002500 ions Chemical class 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000002194 synthesizing effect Effects 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 5
- 229910001786 variscite Inorganic materials 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 230000036632 reaction speed Effects 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
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/055—Etched foil electrodes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a pure inorganic acid formation process for a positive electrode foil for a high-voltage bolt type aluminium electrolytic capacitor. The pure inorganic acid formation process is characterized by comprising the steps of dipping an etched foil into water for performing a dipping treatment to generate a hydrate film on the surface of the etched aluminium foil, then putting the etched aluminum foil, after the aluminum foil is subjected to the dipping treatment, into a dicarboxylic acid solution for further performing the dipping treatment, next putting the aluminum foil into a phosphate solution for performing a first time of formation to generate a dielectric oxide film on the surface of the aluminium foil; and then performing a second time of boric acid formation, and performing a roasting treatment and a phosphoric acid treatment to obtain the final positive electrode aluminium foil. According to the pure inorganic acid formation process for the positive electrode foil for the high-voltage bolt type aluminium electrolytic capacitor, the produced positive electrode foil is better in of electric property, low in current leakage, and high in hydration resistance, so that the formation process can particularly satisfy the high-quality demand of the high-voltage bolt type aluminium electrolytic capacitor; the service life of the high-voltage bolt type aluminium electrolytic capacitor can be prolonged, and the market competitiveness of the product is further enhanced; and in addition, experiments prove that the current leakage can be reduced by more than 28% by the formation process, and the service life of the aluminium electrolytic capacitor is improved by more than 1700 hours proved by an accelerated life test.
Description
Technical field
The present invention relates to a kind of chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, be specifically related to a kind of pure inorganic acid chemical synthesis technology.
Background technology
Anode foils manufactures the critical material of high-pressure aluminum electrolytic capacitor, and the high-pressure aluminum electrolytic capacitor life-span depends primarily on the quality of anode foils quality, and anode foils quality is decided by the working media oxide-film stability quality of aluminium foil surface.
Existing traditional high-pressure aluminum electrolytic capacitor anode foils chemical synthesis technology, in order to obtain stable oxide-film working media, borated mixed acid or boric acid is used to change into, although the porousness oxide-film steady quality generated, but resistance to hydrability (resist degradation) is undesirable, the electrical performance indexes parameter leakage current of another oxide-film quality is general, and the quality requirement of high-pressure bolt formula aluminium electrolytic capacitor antianode paper tinsel is high especially again, and the coating mass that traditional boric acid changes into Process Production is not ideal enough.
Summary of the invention
The technical problem to be solved in the present invention overcomes an existing difficult problem, provide a kind of chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, produce that high-pressure aluminum electrolytic anode foils quality is good, leakage current is little, resistance to hydrability is good, be suitable for the product of high-pressure bolt formula aluminium electrolytic capacitor.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The pure inorganic acid chemical synthesis technology of a kind of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, it is characterized in that: first by etched foil impregnation process in water, make corrosive aluminum foil Surface Creation hydrated film, then impregnation process is carried out by dicarboxylic acids solution, then be placed on phosphate solution to carry out front road and change into, make aluminium foil surface generate dielectric oxide film, then change into through road boric acid later, calcination process, phosphoric acid process obtain final anode aluminium foil.
Preferably, the above-mentioned pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, comprises the following steps:
1) pre-treatment 1
Etched foil is placed in pure water and floods 12-14min;
2) pre-treatment 2
Aluminium foil through pre-treatment 1 is placed in dicarboxylic acids solution and floods;
3) 1 is changed into
Aluminium foil through pre-treatment 2 impregnation process is placed on phosphate solution change into;
4) 2 are changed into
Be placed on phosphate solution change into through changing into 1 aluminium foil changed into;
5) 3 are changed into
Be placed on change into through changing into 2 aluminium foils changed into containing boric acid and borate solution;
6) 4 are changed into
Be placed on change into through changing into 3 aluminium foils changed into containing boric acid and borate solution;
7) roasting 1
Carry out calcination process by through changing into 4 aluminium foils changed into by baking furnace, calciner temperature is 450-550 DEG C, and roasting time is 1-4min;
8) 5 are changed into
The aluminium foil processed through baking furnace 1 is placed on and changes into containing boric acid and borate solution;
9) reprocessing 1
Be placed on phosphoric acid solution carry out dipping 1-10min by through changing into 5 aluminium foils changed into;
10) 6 are changed into
The aluminium foil flooded through reprocessing 1 is placed on and changes into containing boric acid and borate solution;
11) roasting 2
Carry out calcination process by through changing into 6 aluminium foils changed into by baking furnace, sintering temperature is 300-500 DEG C, and the processing time is 1-4min;
12) 7 are changed into
The aluminium foil processed through baking furnace 2 is placed on and changes into containing boric acid and borate solution;
13) reprocessing 2
Be placed on ammonium dihydrogen phosphate carry out dipping 4-15min by through changing into 7 aluminium foils changed into, drying.
Preferably, in described step 1), described pure water temperature 96-98 DEG C, ratio resistance is 10
5more than Ω cm.
Preferably, described step 2) in, the temperature of described dicarboxylic acids solution is 70-85 DEG C, concentration is 0.1wt%-1wt%;
Preferred further, the temperature of described dicarboxylic acids solution is 80 DEG C, concentration is 0.2wt%.
Preferably, described step 2) in, aluminium foil dip time is 30-90S;
Preferred further, aluminium foil dip time is 60S.
Preferably, in described step 3), step 4), the condition of changing into is:
The concentration of phosphate solution is 0.1wt ‰-4wt ‰, phosphate solution pH is 3.5-7.5, and temperature is 70-95 DEG C; Preferred further, the concentration of phosphate solution is 1.5wt ‰, and phosphate solution pH is 5, and temperature is 85 DEG C;
And/or current density is 0.01-0.05A/cm
2, the time is 4-15min; Preferably, current density is 0.02A/cm
2, the time is 5min.
Preferably, described step 5), step 6), in step 8), step 10), step 12), the condition of changing into is:
Borate containing concentration to be the boric acid of 30-90g/l and concentration be 0.05-1wt ‰ in described solution; Preferred further, be the boric acid of 60g/l and the borate of 0.2wt ‰ containing concentration;
And/or pH value of solution is 4.0-6.0, temperature is 80-95 DEG C; Preferred further, pH value of solution is 5, and temperature is 90 DEG C;
And/or forming current density is 0.005-0.05A/cm
2, the time is 4-15min; Preferred further, forming current density is 0.01A/cm
2, the time is 10min.
Preferably, in described step 7), sintering temperature is 550 DEG C, and roasting time is 3min.
Preferably, in described step 9), the concentration of phosphoric acid solution is 0.05wt%-1wt%, and solution temperature is 55-95 DEG C;
Preferred further, the concentration of phosphoric acid solution is 0.3wt%, and solution temperature is 75 DEG C, and dip time is 8min.
Preferably, in described step 11), sintering temperature is 350 DEG C, and roasting time is 2min.
Preferably, in described step 13), the concentration of ammonium dihydrogen phosphate is 0.8wt%-6wt%, and solution temperature is 80-95 DEG C; Preferred further, the concentration of ammonium dihydrogen phosphate is 1.7wt%, and solution temperature is 85 DEG C, and dip time is 7min;
And/or described dry run adopts drying oven to carry out drying and processing, and kiln temperatures is 150-250 DEG C, and the processing time is 1-4min; Preferred further, kiln temperatures is 200 DEG C, and the processing time is 3min.
Analysis on Mechanism of the present invention:
Pre-treatment 1 be the anode foil for aluminum electrolytic capacitor of high pressure change into the most front road treatment process, main purpose is the impurity on removal corrosive aluminum foil surface and first forms aqua oxidation film at aluminium foil surface, aqua oxidation film is conducive to the growth of working media oxide-film in rear road formation process, and processing method is that aluminium foil is placed on temperature 96-98 DEG C, ratio resistance reaches 10
512-14min is flooded in the pure water of more than Ω cm.When the temperature of pure water is too low, hydration reaction speed is slow, and weak effect does not reach the effect of hydration, and when temperature is too high, the water aluminium foil that easily seethes with excitement boils bad being unfavorable for and produces.When the temperature of pure water is 96-98 DEG C, optimum efficiency can be reached.The ratio resistance of pure water is lower than 10
5during Ω cm, remove aluminium foil surface foreign ion weak effect, foreign ion affects the stability of dielectric oxide film.Pure water ratio resistance reaches 10
5during more than Ω cm, optimum efficiency can be reached.The Pure water preparation time, when being less than 12min, hydration reaction was incomplete, and do not reach treatment effect, during more than 14min, substantially completely, hydration reaction stops hydrated film substantially, then carried out process waste energy consumption.The pre-treatment time, when 12-14min, can reach optimum efficiency.
Pre-treatment 2 is one of chemical synthesis technology innovative points of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, its main purpose is the hydrated film making to generate through pre-treatment 1 high temperature Pure water preparation, is improved the structure of hydrated film by a kind of dicarboxylic acids solution-treated and is tended towards stability.The specific practice of this technique is: be placed on by the aluminium foil through pre-treatment 1 in the dicarboxylic acids solution containing a kind of concentration 0.1-1wt% and flood, and dipping temperature is 70-85 DEG C, and dip time is 30-90S.The chemical synthesis technology of traditional high-pressure aluminum electrolytic capacitor anode foils processes without this dicarboxylic acids solution operation, corrosive aluminum foil after the hydrated film of high temperature Pure water preparation at Surface Creation, directly enter next procedure to change into, and hydrated film quality instability now, quality and the life-span of anode foils deielectric-coating can be affected, be in particular in that anode foils leakage current hydrability bigger than normal and resistance to is poor, this technique is exactly improved the structure of hydrated film by this process and tended towards stability, thus reduce anode foils deielectric-coating leakage current and improve resistance to hydrability, further raising anode foils quality and life-span.
Change into 1(one-level to change into), change into the aluminium foil after referring to corrosion and carry out anodic oxidation, make it the γ '-AL2O3 film generating one deck compact structure in its surface, it is using the dielectric as electrolytic capacitor.Change into 1 by the aluminium foil through pre-treatment 2 impregnation process; be placed on that to carry out changing into this containing a kind of phosphate solution be another innovative point place of the present invention; its main purpose is the oxide-film compact structure adopting the solution oxide containing phosphate radical to obtain; and making its surface have one deck variscite diaphragm, the oxide-film of compact structure and variscite diaphragm can improve the leakage current of anode foils deielectric-coating and resistance to hydrability.The specific practice of this technique is: by the aluminium foil through pre-treatment 2 impregnation process, being placed on concentration is that a kind of phosphate solution of 0.1wt ‰-4wt ‰ changes into, and phosphate solution pH is 3.5-7.5, and temperature is 70-95 DEG C, time is 4-15min, and forming current density is 0.01-0.05A/cm
2.The chemical synthesis technology of traditional high-pressure aluminum electrolytic capacitor anode foils the aluminium foil through the process of high temperature boiling pure water is entered mixed acid containing boric acid or boric acid changes into, although the porousness oxide-film steady quality generated, but its resistance to hydrability (resist degradation) is not ideal enough, the electrolytic solution solute that the present invention adopts is mixed acid or the boric acid that a kind of phosphate is different from traditional electrolytic solution solute completely and contains boric acid, the oxide-film compact structure that solution oxide containing phosphate radical obtains, and make its surface have one deck variscite diaphragm, improve the leakage current of anode foils deielectric-coating and resistance to hydrability, this changes into unexistent effect with the mixed acid containing boric acid or boric acid.
Change into 2(secondary to change into) further by through changing into 1 aluminium foil changing into process, to be placed on concentration be that a kind of phosphate solution of 0.1wt ‰-4wt ‰ changes into, phosphate solution PH is 3.5-7.5, temperature is 70-95 DEG C, and the time is 4-15min, and forming current density is 0.01-0.05A/cm
2, this operation obtain further compact texture oxide-film and while having one deck variscite diaphragm, improve the thickness of oxide-film gradually.
Change into 3(tri-grades to change into) by through changing into 2 aluminium foils changed into be placed on containing concentration be the boric acid of 30-90g/l, the borate solution of 0.05--1wt ‰ changes into, solution PH is 4.0-6.0, temperature is 80-95 DEG C, and the time is 4-15min, and forming current density is 0.005-0.05A/cm
2, this operation effect is oxide-film (AL2O3 film) continued growth making aluminium foil surface, to meet the anode foils needs withstand voltage to dielectric insulating film.
Change into 4(level Four and change into 1) by through changing into 3 aluminium foils changed into be placed on containing concentration be the boric acid of 30--90g/l, the borate solution of 0.05--1wt ‰ changes into, solution PH is 4.0--6.0, temperature is 80--95 DEG C, time is 15--35min, forming current density is 0.005--0.05A/c ㎡, it is oxide-film (AL2O3 film) continued growth making aluminium foil surface that this operation effect is still, to meet the anode foils needs withstand voltage to dielectric insulating film.
Roasting 1 carries out calcination process by through changing into 4 aluminium foils changed into by baking furnace 1, sintering temperature is 450--550 DEG C, processing time is 1--4min, and the effect of roasting is that the oxide-film (AL2O3 film) of aluminium foil surface is fully made the transition as the more stable γ ' of compact structure performance-AL2O3 film.
Change into 5(level Four and change into 2) aluminium foil processed through baking furnace 1 is placed on containing concentration be the boric acid of 30-90g/l, the borate solution of 0.05--1wt ‰ changes into, solution PH is 4.0-6.0, temperature is 80-95 DEG C, time is 4-15min, the effect that this road changes into is that the alumina diaphragm defect on antianode paper tinsel surface is repaired, and at defectiveness, place regenerates oxide-film.
Reprocessing 1 is flooded through changing into 5 aluminium foils changed into phosphoric acid solution that to be placed on containing concentration be 0.05-1wt%, solution temperature is 55-95 DEG C, dip time is 1-10min, the effect of this road process carries out resistance to hydrability process to oxide-film, to improve the resistance to hydrability of oxide-film, simultaneously phosphoric acid solution can erode the oxide-film of surface quality difference, all adopts processing method that this phosphoric acid solution floods to improve the resistance to hydrability of oxide-film in Waste Acid From Hua Cheng Foil technique.
Change into 6(level Four and change into 3) aluminium foil flooded through reprocessing 1 is placed on containing concentration be the boric acid of 30-90g/l, the borate solution of 0.05--1wt ‰ changes into, solution PH is 4.0-6.0, temperature is 80-95 DEG C, time is 4-15min, the effect that this road changes into is that the alumina diaphragm defect on antianode paper tinsel surface is repaired, and at defectiveness, place regenerates oxide-film.
Roasting 2 carries out calcination process by through changing into 6 aluminium foils changed into by baking furnace 2, sintering temperature is 300-500 DEG C, processing time is 1-4min, and the effect of roasting is that the oxide-film (AL2O3 film) of aluminium foil surface is fully made the transition further as the more stable γ ' of compact structure performance-AL2O3 film.
Change into 7(level Four and change into 4) aluminium foil processed through baking furnace 2 is placed on containing concentration be the boric acid of 30-90g/l, the borate solution of 0.05-1wt ‰ changes into, solution PH is 4.0-6.0, temperature is 80-95 DEG C, time is 4-15min, the effect that this road changes into is that the alumina diaphragm defect on antianode paper tinsel surface is repaired further, and at defectiveness, place regenerates oxide-film.
Reprocessing 2 is flooded through changing into 7 aluminium foils changed into ammonium dihydrogen phosphate that to be placed on containing concentration be 0.8-6wt%, solution temperature is 80-95 DEG C, time is 4-15min, and the effect of this road process carries out resistance to hydrability process to oxide-film, to improve the resistance to hydrability of oxide-film.
Finally, the aluminium foil flooded through reprocessing 2 is carried out drying and processing by drying oven, kiln temperatures is 150-250 DEG C, and the processing time is 1-4min, and this procedure carries out drying and processing to final anode foils.
Beneficial effect of the present invention
The pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor provided by the invention, the anode foils electrical property better quality of producing, leakage current is little, resistance to hydrability is good, be specially adapted to the requirement of high-pressure bolt formula aluminium electrolytic capacitor high-quality, the useful life of high-pressure bolt formula aluminium electrolytic capacitor can be increased, further increase the competitiveness of product in market.Record through experiment, present invention process can reduce leakage current more than 28%, and accelerated life test improves life-span more than 1700h.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1
The pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, this technique comprises the following steps successively:
(1) pre-treatment 1
Etched foil is placed on remove foreign ion, temperature 96 DEG C, ratio resistance reach 10
512min is flooded in the pure water of Ω cm;
(2) pre-treatment 2
Be placed on by aluminium foil through pre-treatment 1 in the dicarboxylic acids solution of 0.1wt% and flood, dipping temperature is 80 DEG C, and dip time is 90S;
(3) 1 is changed into
Changed into by the phosphate solution that aluminium foil through pre-treatment 2 impregnation process is placed on 0.1wt ‰, phosphate solution PH is 3.5, and temperature is 70 DEG C, and the time is 4min, and forming current density is 0.01A/cm
2;
(4) 2 are changed into
Changed into by the phosphate solution being placed on 0.1wt ‰ through changing into 1 aluminium foil changed into, phosphate solution pH is 3.5, and temperature is 70 DEG C, and the time is 4min, and forming current density is 0.01A/cm
2;
(5) 3 are changed into
To be that the boric acid of 30g/l and the borate solution of 0.05wt ‰ change into through changing into that 2 aluminium foils changed into are placed on containing concentration, pH value of solution be 4.0, and temperature is 80 DEG C, and the time is 4min, and forming current density is 0.005A/cm
2;
(6) 4 are changed into
To be that the boric acid of 30g/l and the borate solution of 0.05wt ‰ change into through changing into that 3 aluminium foils changed into are placed on containing concentration, pH value of solution be 4.0, and temperature is 80 DEG C, and the time is 15min, and forming current density is 0.005A/cm
2;
(7) baking furnace 1
Carry out calcination process by through changing into 4 aluminium foils changed into by baking furnace 1, baking furnace 1 temperature is 550 DEG C, and the processing time is 3min;
(8) 5 are changed into
Being placed on by the aluminium foil processed through baking furnace 1 containing concentration is that the boric acid of 30g/l and the borate solution of 0.05wt ‰ change into, and pH value of solution is 4.0, and temperature is 80 DEG C, and the time is 4min;
(9) reprocessing 1
Flooded by the phosphoric acid solution being placed on 0.05wt% through changing into 5 aluminium foils changed into, solution temperature is 55 DEG C, and dip time is 1min;
(10) 6 are changed into
Being placed on by the aluminium foil flooded through reprocessing 1 containing concentration is that the boric acid of 30g/l and the borate solution of 0.05wt ‰ change into, and pH value of solution is 4.0, and temperature is 80 DEG C, and the time is 4min;
(11) baking furnace 2
Carry out calcination process by through changing into 6 aluminium foils changed into by baking furnace 2, baking furnace 2 temperature is 300 DEG C, and the processing time is 1min.
(12) 7 are changed into
Being placed on by the aluminium foil processed through baking furnace 2 containing concentration is that the boric acid of 30g/l and the borate solution of 0.05wt ‰ change into, and pH value of solution is 4.0, and temperature is 80 DEG C, and the time is 4min;
(13) reprocessing 2
Flooded by the ammonium dihydrogen phosphate being placed on 0.8wt% through changing into 7 aluminium foils changed into, solution temperature is 80 DEG C, and the time is 4min;
(14) drying oven
The aluminium foil flooded through reprocessing 2 is carried out drying and processing by drying oven, and kiln temperatures is 150 DEG C, and the processing time is 1min.
Embodiment 2
The pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, this technique comprises the following steps successively:
(1) pre-treatment 1
Etched foil is placed on remove foreign ion, temperature 98 DEG C, ratio resistance reach 10
514min is flooded in the pure water of more than Ω cm;
(2) pre-treatment 2
Be placed on by aluminium foil through pre-treatment 1 in the dicarboxylic acids solution of 0.2wt% and flood, dipping temperature is 80 DEG C, and dip time is 60S;
(3) 1 is changed into
Changed into by the phosphate solution that aluminium foil through pre-treatment 2 impregnation process is placed on 1.5wt ‰, phosphate solution PH is 5, and temperature is 85 DEG C, and the time is 5min, and forming current density is 0.02A/cm
2;
(4) 2 are changed into
Changed into by the phosphate solution being placed on 1.5wt ‰ through changing into 1 aluminium foil changed into, phosphate solution PH is 5, and temperature is 85 DEG C, and the time is 5min, and forming current density is 0.02A/cm
2;
(5) 3 are changed into
To be that the boric acid of 60g/l and the borate solution of 0.2wt ‰ change into through changing into that 2 aluminium foils changed into are placed on containing concentration, pH value of solution be 5.0, and temperature is 90 DEG C, and the time is 10min, and forming current density is 0.01A/cm
2;
(6) 4 are changed into
To be that the boric acid of 60g/l and the borate solution of 0.2wt ‰ change into through changing into that 3 aluminium foils changed into are placed on containing concentration, pH value of solution be 5.0, and temperature is 90 DEG C, and the time is 10min, and forming current density is 0.01A/cm
2;
(7) baking furnace 1
Carry out calcination process by through changing into 4 aluminium foils changed into by baking furnace 1, baking furnace 1 temperature is 550 DEG C, and the processing time is 3min;
(8) 5 are changed into
Be placed on by the aluminium foil processed through baking furnace 1 containing being that the boric acid of 60g/l and the borate solution of 0.2wt ‰ change into containing concentration, pH value of solution is 5.0, and temperature is 90 DEG C, and the time is 10min, and forming current density is 0.01A/cm
2;
(9) reprocessing 1
Flooded by the phosphoric acid solution being placed on 0.3wt% through changing into 5 aluminium foils changed into, solution temperature is 75 DEG C, and dip time is 8min;
(10) 6 are changed into
Being placed on by the aluminium foil flooded through reprocessing 1 containing concentration is that the boric acid of 60g/l and the borate solution of 0.2wt ‰ change into, and pH value of solution is 5.0, and temperature is 90 DEG C, and the time is 10min, and forming current density is 0.01A/cm
2;
(11) baking furnace 2
Carry out calcination process by through changing into 6 aluminium foils changed into by baking furnace 2, baking furnace 2 temperature is 350 DEG C, and the processing time is 2min.
(12) 7 are changed into
Being placed on by the aluminium foil processed through baking furnace 2 containing concentration is that the boric acid of 60g/l and the borate solution of 0.2wt ‰ change into, and pH value of solution is 5.0, and temperature is 90 DEG C, and the time is 10min, and forming current density is 0.01A/cm
2;
(13) reprocessing 2
Flooded by the ammonium dihydrogen phosphate being placed on 1.7wt% through changing into 7 aluminium foils changed into, solution temperature is 85 DEG C, and the time is 7min;
(14) drying oven
The aluminium foil flooded through reprocessing 2 is carried out drying and processing by drying oven, and kiln temperatures is 200 DEG C, and the processing time is 3min.
Embodiment 3
The pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, this technique comprises the following steps successively:
(1) pre-treatment 1
Etched foil is placed on remove foreign ion, temperature 97 DEG C, ratio resistance reach 10
512min is flooded in the pure water of more than Ω cm;
(2) pre-treatment 2
Be placed on by aluminium foil through pre-treatment 1 in the dicarboxylic acids solution of 1wt% and flood, dipping temperature is 85 DEG C, and dip time is 30S;
(3) 1 is changed into
Changed into by the phosphate solution that aluminium foil through pre-treatment 2 impregnation process is placed on 4wt ‰, phosphate solution PH is 7.5, and temperature is 95 DEG C, and the time is 10min, and forming current density is 0.05A/cm
2;
(4) 2 are changed into
Changed into by the phosphate solution being placed on 0.4wt ‰ through changing into 1 aluminium foil changed into, phosphate solution pH is 6.0, and temperature is 80 DEG C, and the time is 7min, and forming current density is 0.05A/cm
2;
(5) 3 are changed into
To be that the boric acid of 90g/l and the borate solution of 0.1wt ‰ change into through changing into that 2 aluminium foils changed into are placed on containing concentration, pH value of solution be 4.5, and temperature is 95 DEG C, and the time is 15min, and forming current density is 0.03A/cm
2;
(6) 4 are changed into
To be that the boric acid of 70g/l and the borate solution of 0.8wt ‰ change into through changing into that 3 aluminium foils changed into are placed on containing concentration, pH value of solution be 5.7, and temperature is 90 DEG C, and the time is 6min, and forming current density is 0.009A/cm
2;
(7) baking furnace 1
Carry out calcination process by through changing into 4 aluminium foils changed into by baking furnace 1, baking furnace 1 temperature is 450 DEG C, and the processing time is 4min;
(8) 5 are changed into
Being placed on by the aluminium foil processed through baking furnace 1 containing concentration is that the boric acid of 50g/l and the borate solution of 0.45wt ‰ change into, and pH value of solution is 4.5, and temperature is 85 DEG C, and the time is 12min;
(9) reprocessing 1
Flooded by the phosphoric acid solution being placed on 0.1wt% through changing into 5 aluminium foils changed into, solution temperature is 95 DEG C, and dip time is 5min;
(10) 6 are changed into
Being placed on by the aluminium foil flooded through reprocessing 1 containing concentration is that the boric acid of 75g/l and the borate solution of 0.6wt ‰ change into, and pH value of solution is 5.2, and temperature is 80 DEG C, and the time is 15min;
(11) baking furnace 2
Carry out calcination process by through changing into 6 aluminium foils changed into by baking furnace 2, baking furnace 2 temperature is 500 DEG C, and the processing time is 4min.
(12) 7 are changed into
Being placed on by the aluminium foil processed through baking furnace 2 containing concentration is that the boric acid of 80g/l and the borate solution of 0.06wt ‰ change into, and pH value of solution is 4.1, and temperature is 90 DEG C, and the time is 14min;
(13) reprocessing 2
Flooded by the ammonium dihydrogen phosphate being placed on 6wt% through changing into 7 aluminium foils changed into, solution temperature is 95 DEG C, and the time is 10min;
(14) drying oven
The aluminium foil flooded through reprocessing 2 is carried out drying and processing by drying oven, and kiln temperatures is 250 DEG C, and the processing time is 2min.
Embodiment 4
The pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, this technique comprises the following steps successively:
(1) pre-treatment 1
Etched foil is placed on remove foreign ion, temperature 96 DEG C, ratio resistance reach 10
512min is flooded in the pure water of more than Ω cm;
(2) pre-treatment 2
Be placed on by aluminium foil through pre-treatment 1 in the dicarboxylic acids solution of 0.5wt% and flood, dipping temperature is 80 DEG C, and dip time is 90S;
(3) 1 is changed into
Changed into by the phosphate solution that aluminium foil through pre-treatment 2 impregnation process is placed on 3wt ‰, phosphate solution PH is 6, and temperature is 80 DEG C, and the time is 12min, and forming current density is 0.04A/cm
2;
(4) 2 are changed into
Changed into by the phosphate solution being placed on 0.1wt ‰ through changing into 1 aluminium foil changed into, phosphate solution pH is 3.5, and temperature is 70 DEG C, and the time is 4min, and forming current density is 0.01A/cm
2;
(5) 3 are changed into
To be that the boric acid of 40g/l and the borate solution of 0.1wt ‰ change into through changing into that 2 aluminium foils changed into are placed on containing concentration, pH value of solution be 5.0, and temperature is 85 DEG C, and the time is 15min, and forming current density is 0.04A/cm
2;
(6) 4 are changed into
To be that the boric acid of 80g/l and the borate solution of 0.9wt ‰ change into through changing into that 3 aluminium foils changed into are placed on containing concentration, pH value of solution be 6.0, and temperature is 95 DEG C, and the time is 7min, and forming current density is 0.02A/cm
2;
(7) baking furnace 1
Carry out calcination process by through changing into 4 aluminium foils changed into by baking furnace 1, baking furnace 1 temperature is 500 DEG C, and the processing time is 1min;
(8) 5 are changed into
Being placed on by the aluminium foil processed through baking furnace 1 containing concentration is that the boric acid of 65g/l and the borate solution of 0.08wt ‰ change into, and pH value of solution is 4.0, and temperature is 90 DEG C, and the time is 15min;
(9) reprocessing 1
Flooded by the phosphoric acid solution being placed on 0.05wt% through changing into 5 aluminium foils changed into, solution temperature is 55 DEG C, and dip time is 1min;
(10) 6 are changed into
Being placed on by the aluminium foil flooded through reprocessing 1 containing concentration is that the boric acid of 70g/l and the borate solution of 0.7wt ‰ change into, and pH value of solution is 6.0, and temperature is 80 DEG C, and the time is 15min;
(11) baking furnace 2
Carry out calcination process by through changing into 6 aluminium foils changed into by baking furnace 2, baking furnace 2 temperature is 400 DEG C, and the processing time is 3min.
(12) 7 are changed into
Being placed on by the aluminium foil processed through baking furnace 2 containing concentration is that the boric acid of 55g/l and the borate solution of 0.3wt ‰ change into, and pH value of solution is 5, and temperature is 80 DEG C, and the time is 11min;
(13) reprocessing 2
Flooded by the ammonium dihydrogen phosphate being placed on 4.3wt% through changing into 7 aluminium foils changed into, solution temperature is 90 DEG C, and the time is 5min;
(14) drying oven
The aluminium foil flooded through reprocessing 2 is carried out drying and processing by drying oven, and kiln temperatures is 200 DEG C, and the processing time is 4min.
Comparative analysis:
Identical etched foil changes into:
1, after the electrode foil chemical synthesizing method in existing forming technology changes into:
660VF tests, leakage current 170 μ A/5cm
2, aluminium electrolytic capacitor 105 DEG C of accelerated life tests, experimental lifetime: 2100h.
2, after the aluminum electrolysis capacitor anode foil chemical synthesizing method of embodiment 1 changes into:
660VF tests, leakage current 121 μ A/5cm
2, aluminium electrolytic capacitor 105 DEG C of accelerated life tests, experimental lifetime: 3800h.
3, after the aluminum electrolysis capacitor anode foil chemical synthesizing method of embodiment 2 changes into:
660VF tests, leakage current 118 μ A/5cm
2, aluminium electrolytic capacitor 105 DEG C of accelerated life tests, experimental lifetime: 4000h.
4, after the aluminum electrolysis capacitor anode foil chemical synthesizing method of embodiment 3 changes into:
660VF tests, leakage current 120 μ A/5cm
2, aluminium electrolytic capacitor 105 DEG C of accelerated life tests, experimental lifetime: 3800h.
5, after the aluminum electrolysis capacitor anode foil chemical synthesizing method of embodiment 4 changes into:
660VF tests, leakage current 123 μ A/5cm
2, aluminium electrolytic capacitor 105 DEG C of accelerated life tests, experimental lifetime: 3900h.
Applied to the experimental result that high pressure changes into can be learnt by above-mentioned: the high-pressure bolt formula aluminum electrolysis capacitor anode foil chemical synthesizing method of above-described embodiment, can reduce leakage current more than 28%, accelerated life test improves life-span more than 1700h.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor, it is characterized in that: first by etched foil impregnation process in water, make corrosive aluminum foil Surface Creation hydrated film, then the corrosive aluminum foil of impregnation process is placed in dicarboxylic acids solution and carries out impregnation process, then be placed on phosphate solution to carry out front road and change into, make aluminium foil surface generate dielectric oxide film, then change into through road boric acid later, calcination process, phosphoric acid process obtain final anode aluminium foil.
2. the pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor according to claim 1, is characterized in that: comprise the following steps:
1) pre-treatment 1
Etched foil is placed in pure water and floods 12-14min;
2) pre-treatment 2
Aluminium foil through pre-treatment 1 is placed in dicarboxylic acids solution and floods;
3) 1 is changed into
Aluminium foil through pre-treatment 2 impregnation process is placed on phosphate solution change into;
4) 2 are changed into
Be placed on phosphate solution change into through changing into 1 aluminium foil changed into;
5) 3 are changed into
Be placed on change into through changing into 2 aluminium foils changed into containing boric acid and borate solution;
6) 4 are changed into
Be placed on change into through changing into 3 aluminium foils changed into containing boric acid and borate solution;
7) roasting 1
Carry out calcination process by through changing into 4 aluminium foils changed into by baking furnace, calciner temperature is 450-550 DEG C, and roasting time is 1-4min;
8) 5 are changed into
The aluminium foil processed through baking furnace 1 is placed on and changes into containing boric acid and borate solution;
9) reprocessing 1
Be placed on phosphoric acid solution carry out dipping 1-10min by through changing into 5 aluminium foils changed into;
10) 6 are changed into
The aluminium foil flooded through reprocessing 1 is placed on and changes into containing boric acid and borate solution;
11) roasting 2
Carry out calcination process by through changing into 6 aluminium foils changed into by baking furnace, sintering temperature is 300-500 DEG C, and the processing time is 1-4min;
12) 7 are changed into
The aluminium foil processed through baking furnace 2 is placed on and changes into containing boric acid and borate solution;
13) reprocessing 2
Be placed on ammonium dihydrogen phosphate carry out dipping 4-15min by through changing into 7 aluminium foils changed into, drying.
3. the pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor according to claim 2, is characterized in that: in described step 1), described pure water temperature 96-98 DEG C, ratio resistance is 10
5more than Ω cm.
4. the pure inorganic acid chemical synthesis technology of a kind of high-pressure bolt formula anode foil for aluminum electrolytic capacitor according to claim 2, is characterized in that: described step 2) in, the temperature of described dicarboxylic acids solution is 70-85 DEG C, concentration is 0.1wt%-1wt%;
Preferably, the temperature of described dicarboxylic acids solution is 80 DEG C, concentration is 0.2wt%;
And/or, described step 2) in, aluminium foil dip time is 30-90S;
Preferably, aluminium foil dip time is 60S.
5. the pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor according to claim 2, is characterized in that: in described step 3), step 4), the condition of changing into is:
The concentration of phosphate solution is 0.1wt ‰-4wt ‰, phosphate solution pH is 3.5-7.5, and temperature is 70-95 DEG C; Preferably, the concentration of phosphate solution is 1.5wt ‰, and phosphate solution pH is 5, and temperature is 85 DEG C;
And/or current density is 0.01-0.05A/cm
2, the time is 4-15min; Preferably, current density is 0.02A/cm
2, the time is 5min.
6. the pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor according to claim 2, is characterized in that: described step 5), step 6), in step 8), step 10), step 12), the condition of changing into is:
Borate containing concentration to be the boric acid of 30-90g/l and concentration be 0.05-1wt ‰ in described solution; Preferably, be the boric acid of 60g/l and the borate of 0.2wt ‰ containing concentration;
And/or pH value of solution is 4.0-6.0, temperature is 80-95 DEG C; Preferably, pH value of solution is 5, and temperature is 90 DEG C;
And/or forming current density is 0.005-0.05A/cm
2, the time is 4-15min; Preferably, forming current density is 0.01A/cm
2, the time is 10min.
7. the pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor according to claim 2, is characterized in that: in described step 7), and sintering temperature is 550 DEG C, and roasting time is 3min.
8. the pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor according to claim 2, is characterized in that: in described step 9), and the concentration of phosphoric acid solution is 0.05wt%-1wt%, and solution temperature is 55-95 DEG C;
Preferably, the concentration of phosphoric acid solution is 0.3wt%, and solution temperature is 75 DEG C, and dip time is 8min.
9. the pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor according to claim 2, is characterized in that: in described step 11), and sintering temperature is 350 DEG C, and roasting time is 2min.
10. the pure inorganic acid chemical synthesis technology of high-pressure bolt formula anode foil for aluminum electrolytic capacitor according to claim 2, is characterized in that: in described step 13), and the concentration of ammonium dihydrogen phosphate is 0.8wt%-6wt%, and solution temperature is 80-95 DEG C;
Preferably, the concentration of ammonium dihydrogen phosphate is 1.7wt%, and solution temperature is 85 DEG C, and dip time is 7min;
And/or described dry run adopts drying oven to carry out drying and processing, and kiln temperatures is 150-250 DEG C, and the processing time is 1-4min; Preferably, kiln temperatures is 200 DEG C, and the processing time is 3min.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1484259A (en) * | 2003-07-10 | 2004-03-24 | 深圳市东阳光化成箔股份有限公司 | Method for mfg of anode foil of aluminium electrolytic capacitor |
| CN1667767A (en) * | 2005-04-05 | 2005-09-14 | 江苏中联科技集团有限公司 | Method for manufacturing electrode foil for high-voltage long-life aluminum electrolytic capacitor |
| CN101110298A (en) * | 2006-12-22 | 2008-01-23 | 东莞市东阳光电容器有限公司 | Method for manufacturing positive electrode aluminum foil of electrolytic capacitor |
| CN101510469A (en) * | 2009-01-13 | 2009-08-19 | 珠海华冠电容器有限公司 | Method for preparing solid aluminum electrolytic capacitor |
| CN101651045A (en) * | 2009-06-23 | 2010-02-17 | 吴江飞乐天和电子材料有限公司 | Manufacturing method of high-voltage aluminum electrolytic capacitor conductive foil |
| CN101748462A (en) * | 2010-03-20 | 2010-06-23 | 宜都东阳光化成箔有限公司 | Formation method of anode aluminum foil for high-voltage aluminum electrolytic capacitor |
| CN102610390A (en) * | 2011-01-20 | 2012-07-25 | 严民 | Method for forming ultrahigh-voltage anode foil for aluminum electrolytic capacitors |
| CN103187181A (en) * | 2013-03-25 | 2013-07-03 | 荥经县旭光电子有限公司 | Six-level forming method of medium and high voltage aluminum electrolytic capacitor anode foil |
| JP2013207028A (en) * | 2012-03-28 | 2013-10-07 | Hitachi Aic Inc | Electrode foil for aluminum electrolytic capacitor |
-
2015
- 2015-11-30 CN CN201510858433.5A patent/CN105405658B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1484259A (en) * | 2003-07-10 | 2004-03-24 | 深圳市东阳光化成箔股份有限公司 | Method for mfg of anode foil of aluminium electrolytic capacitor |
| CN1667767A (en) * | 2005-04-05 | 2005-09-14 | 江苏中联科技集团有限公司 | Method for manufacturing electrode foil for high-voltage long-life aluminum electrolytic capacitor |
| CN101110298A (en) * | 2006-12-22 | 2008-01-23 | 东莞市东阳光电容器有限公司 | Method for manufacturing positive electrode aluminum foil of electrolytic capacitor |
| CN101510469A (en) * | 2009-01-13 | 2009-08-19 | 珠海华冠电容器有限公司 | Method for preparing solid aluminum electrolytic capacitor |
| CN101651045A (en) * | 2009-06-23 | 2010-02-17 | 吴江飞乐天和电子材料有限公司 | Manufacturing method of high-voltage aluminum electrolytic capacitor conductive foil |
| CN101748462A (en) * | 2010-03-20 | 2010-06-23 | 宜都东阳光化成箔有限公司 | Formation method of anode aluminum foil for high-voltage aluminum electrolytic capacitor |
| CN102610390A (en) * | 2011-01-20 | 2012-07-25 | 严民 | Method for forming ultrahigh-voltage anode foil for aluminum electrolytic capacitors |
| JP2013207028A (en) * | 2012-03-28 | 2013-10-07 | Hitachi Aic Inc | Electrode foil for aluminum electrolytic capacitor |
| CN103187181A (en) * | 2013-03-25 | 2013-07-03 | 荥经县旭光电子有限公司 | Six-level forming method of medium and high voltage aluminum electrolytic capacitor anode foil |
Non-Patent Citations (2)
| Title |
|---|
| 金同寿: "《阻容元件及其片式化技术》", 30 April 2000, 东南大学出版社 * |
| 陈国光，曹婉真: "《电解电容器》", 31 December 1993, 西安交通大学出版社 * |
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