CN107658135A - A kind of preprocess method for improving electrode foil for aluminum electrolytic capacitors hair engaging aperture density - Google Patents
A kind of preprocess method for improving electrode foil for aluminum electrolytic capacitors hair engaging aperture density Download PDFInfo
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- CN107658135A CN107658135A CN201711077574.9A CN201711077574A CN107658135A CN 107658135 A CN107658135 A CN 107658135A CN 201711077574 A CN201711077574 A CN 201711077574A CN 107658135 A CN107658135 A CN 107658135A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000011888 foil Substances 0.000 title claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 11
- 239000003990 capacitor Substances 0.000 title claims abstract description 11
- 239000005030 aluminium foil Substances 0.000 claims abstract description 51
- 238000005406 washing Methods 0.000 claims abstract description 47
- 238000004140 cleaning Methods 0.000 claims abstract description 34
- 239000000126 substance Substances 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 24
- 229910017604 nitric acid Inorganic materials 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- 230000002000 scavenging effect Effects 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 12
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 claims description 9
- 229940039790 sodium oxalate Drugs 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000012792 core layer Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 17
- 238000005260 corrosion Methods 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000006056 electrooxidation 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
- 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
-
- 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
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Chemical Treatment Of Metals (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention discloses a kind of preprocess method for improving electrode foil for aluminum electrolytic capacitors hair engaging aperture density, comprise the following steps：Pretreatment, once washing, hair engaging aperture processing, middle processing, secondary washing, three times expanding treatment, washing, Chemical cleaning, four washings, drying.The uniformity that the present invention improves aluminium foil surface pit and be distributed by improving pretreatment condition, reduce the Reducing thickness of aluminium foil, finally give that hole is uniformly distributed, consistent, the residual uniform medium-high voltage aluminum electrolytic capacitor electrode foil of core layer thickness is grown in hole, capacity has a distinct increment with intensity after chemical conversion.
Description
Technical field
A kind of electrochemical etching method the present invention relates to capacitor with mesohigh anode foils.
Background technology
Medium-high voltage aluminum electrolytic capacitor is generated a large amount of with anode foils typically by the method for electrochemical corrosion in aluminium foil surface
Tunnel-hole to expand its effective surface area, to improve capacitor specific capacitance.In order to ensure that it is necessary windability that electrode foil has
Can, the electrode foil after corrosion will also have certain tensile strength and buckling performance.In addition, in order that electrode foil combination property is more excellent
Change, it is necessary to improve the uniformity of aluminium foil surface pit distribution in corrosion process, reduce the self-corrosion phenomenon of aluminium foil surface.
Because one layer of fine and close oxide-film Al be present in aluminium foil surface2O3, its thickness and the uniformity of distribution, to lower road work
The germinating of pit has considerable influence effect in aluminium foil corrosion hair engaging aperture in skill.Traditional preprocess method is to use H3PO4。H3PO4Category
In middle strong acid, chemical attack reaction easily occurs with aluminium foil, when treatment fluid concentration or too low temperature, it is impossible to remove aluminium foil completely
The oxide-film and greasy dirt on surface；And when concentration or too high temperature, light paper tinsel surface can corrode because of chemical attack, aluminum foil thickness
It is thinned, is negatively affected to the corrosion of lower one-step electrochemistry extended surface, is unfavorable for the lifting of specific volume, also brings the reduction of intensity.
Pretreatment：Using 5 wt% phosphoric acid solution, temperature is 40 DEG C, and processing time was controlled at 90 seconds；
Once wash：Under normal temperature condition, pure water is washed 2 minutes；
Hair engaging aperture：Corrosive liquid is 15 wt% sulfuric acid and 5 wt% hydrochloric acid mixed solution, and temperature is 70 DEG C, and using direct current, electricity is
35 C/cm2, current density 0.5A/cm2；
Middle processing：7 wt% nitric acid, temperature are 55 DEG C, and scavenging period was controlled at 2 minutes；
Secondary washing：Under normal temperature condition, originally wash 3 minutes；
Reaming：Corrosive liquid is 5 wt% nitric acid, and temperature is 65 DEG C, and using direct current, electricity is 45 C/cm2, current density is
0.1A/cm2；
Wash three times：Under normal temperature condition, originally wash 3 minutes；
Chemical cleaning：Cleaning fluid is 8 wt% nitric acid, and temperature is 65 DEG C, and scavenging period is 2 minutes；
Four washings：Under normal temperature condition, originally wash 3 minutes；
Pure water cleans：Under normal temperature condition, pure water spray washing 6 minutes；
Dry：Under the conditions of 200 DEG C, dry 2 minutes.
The anode foils 560VF capacity being prepared is as follows：
The content of the invention
The invention aims to overcome the shortcomings of the above, there is provided a kind of hole is uniform, hole length is consistent, intensity is good
The preprocess method of aluminium electrolutic capacitor mesohigh anode foils.
The purpose of the present invention is achieved through the following technical solutions：It is close that one kind improves electrode foil for aluminum electrolytic capacitors hair engaging aperture
The preprocess method of degree, detailed process are as follows：
Once pre-process：Aluminium foil is once pre-processed using 0.1-10g/L sodium hydroxide solution, temperature is 20-60 DEG C,
Processing time was controlled in the 20-90 seconds；
Secondary pretreatment：The sodium oxalate solution for reusing 0.1-10g/L carries out secondary pretreatment to aluminium foil, and temperature is 30-70 DEG C,
Processing time was controlled in the 20-120 seconds；
Once wash：Pretreated aluminium foil twice will be passed through once to be washed, i.e., under normal temperature condition, 1- is washed using pure water
3 minutes；
Hair engaging aperture：Aluminium foil is subjected to hair engaging aperture using corrosive liquid, the corrosive liquid is 8-40 wt% sulfuric acid and 1-10 wt% hydrochloric acid
Mixed liquor, temperature are 60-90 DEG C, and using direct current, electricity is 30-60 C/cm2, current density 0.4-1.5A/cm2；
Middle processing：Will aluminium foil after hair engaging aperture carry out in handle, using 1-10 wt% nitric acid, temperature is 30-70 DEG C, during cleaning
Between control in 1-10 minutes；
Secondary washing：Aluminium foil after middle processing is subjected to secondary washing, i.e., under normal temperature condition, using originally washing 1-3 minutes；
Reaming：Aluminium foil after washing is subjected to reaming using corrosive liquid, the corrosive liquid is 1-10 wt% nitric acid, and temperature is
30-80 DEG C, using direct current, electricity is 30-60 C/cm2, current density 0.05-0.5A/cm2；
Wash three times：Aluminium foil after reaming is washed three times, i.e., under normal temperature condition, using originally washing 1-3 minutes；
Chemical cleaning：Aluminium foil after washing is subjected to Chemical cleaning using cleaning fluid, the cleaning fluid is 1-10 wt% nitric acid,
Temperature is 30-70 DEG C, and scavenging period is 1-10 minutes；
Four washings：Aluminium foil after cleaning is subjected to four washings, i.e., under normal temperature condition, using originally washing 1-3 minutes；
Pure water cleans：Aluminium foil is finally subjected to pure water cleaning, i.e., under normal temperature condition, using pure water spray washing 5-10 minutes；
Dry：Aluminium foil after cleaning is dried under the conditions of 100-300 DEG C, drying time is 1-5 minutes.
The present invention has advantages below compared with prior art：The present invention uses the method for fractional steps.The first step uses NaOH solution
Dipping, second step are impregnated using sodium oxalate solution.Dilute NaOH solution is reacted than milder with aluminium foil surface, and it can effectively be removed
Aluminium foil surface uneven oxide-film and clc layer；And sodium oxalate has stronger oxidisability, can be formed in new aluminium foil surface
Uniform porous oxide-film, it is therefore prevented that specimen surface corrodes generation, while this porous oxide film rises again in hair engaging aperture corrosion
Very important effect.Using substep preprocess method sour after this first alkali, make the distribution of aluminium foil surface pit more uniform.
Embodiment：
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below by the skill in the embodiment of the present invention
Art scheme is clearly and completely described, it is clear that and described embodiment is part of the embodiment of the present invention, rather than all
Embodiment.The element and feature described in one embodiment of the invention can be with one or more other embodiment party
The element and feature shown in formula is combined.It should be noted that eliminate for purposes of clarity, in explanation unrelated to the invention
, the expression and description of part known to persons of ordinary skill in the art and processing.Based on the embodiment in the present invention, this area
The every other embodiment that those of ordinary skill is obtained on the premise of creative work is not paid, belongs to guarantor of the present invention
The scope of shield.
A kind of method that extracting sulfuric acid aluminium in spent acid is produced from electrode foil, is comprised the following steps that：
Once pre-process：Aluminium foil is once pre-processed using 0.1-10g/L sodium hydroxide solution, temperature is 20-60 DEG C,
Processing time was controlled in the 20-90 seconds；Secondary pretreatment：The sodium oxalate solution for reusing 0.1-10g/L is secondary pre- to aluminium foil progress
Processing, temperature are 30-70 DEG C, and processing time was controlled in the 20-120 seconds；Once wash：Pretreated aluminium foil twice will be passed through to enter
Row is once washed, i.e., under normal temperature condition, 1-3 minutes are washed using pure water；Hair engaging aperture：Aluminium foil is subjected to hair engaging aperture, institute using corrosive liquid
Corrosive liquid is stated as 8-40 wt% sulfuric acid and 1-10 wt% hydrochloric acid mixed solution, temperature is 60-90 DEG C, using direct current, electricity
For 30-60 C/cm2, current density 0.4-1.5A/cm2；Middle processing：Handled during aluminium foil after hair engaging aperture is carried out, using 1-
10 wt% nitric acid, temperature are 30-70 DEG C, and scavenging period was controlled in 1-10 minutes；Secondary washing：Aluminium foil after middle processing is entered
The secondary washing of row, i.e., under normal temperature condition, using originally washing 1-3 minutes；Reaming：Aluminium foil after washing is carried out using corrosive liquid
Reaming, the corrosive liquid are 1-10 wt% nitric acid, and temperature is 30-80 DEG C, and using direct current, electricity is 30-60 C/cm2, electricity
Current density is 0.05-0.5A/cm2；Wash three times：Aluminium foil after reaming is washed three times, i.e., under normal temperature condition, using certainly
To wash 1-3 minutes；Chemical cleaning：Aluminium foil after washing is subjected to Chemical cleaning using cleaning fluid, the cleaning fluid is 1-10
Wt% nitric acid, temperature are 30-70 DEG C, and scavenging period is 1-10 minutes；Four washings：Aluminium foil after cleaning is subjected to four water
Wash, i.e., under normal temperature condition, using originally washing 1-3 minutes；Pure water cleans：Aluminium foil is finally subjected to pure water cleaning, i.e. normal temperature bar
Under part, using pure water spray washing 5-10 minutes；Dry：Aluminium foil after cleaning is dried under the conditions of 100-300 DEG C,
Drying time is 1-5 minutes.
Embodiment 1：
Once pre-process：Using 0.5g/L sodium hydroxide solution, temperature is 60 DEG C, and processing time was controlled at 60 seconds；
Secondary pretreatment：Using 1g/L sodium oxalate solution, temperature is 55 DEG C, and processing time was controlled at 60 seconds；
Once wash：Under normal temperature condition, pure water is washed 2 minutes；
Hair engaging aperture：Corrosive liquid is 15 wt% sulfuric acid and 5 wt% hydrochloric acid mixed solution, and temperature is 70 DEG C, and using direct current, electricity is
35 C/cm2, current density 0.5A/cm2；
Middle processing：7 wt% nitric acid, temperature are 55 DEG C, and scavenging period was controlled at 2 minutes；
Secondary washing：Under normal temperature condition, originally wash 3 minutes；
Reaming：Corrosive liquid is 5 wt% nitric acid, and temperature is 65 DEG C, and using direct current, electricity is 45 C/cm2, current density is
0.1A/cm2；
Wash three times：Under normal temperature condition, originally wash 3 minutes；
Chemical cleaning：Cleaning fluid is 8 wt% nitric acid, and temperature is 65 DEG C, and scavenging period is 2 minutes；
Four washings：Under normal temperature condition, originally wash 3 minutes；
Pure water cleans：Under normal temperature condition, pure water spray washing 6 minutes；
Dry：Under the conditions of 200 DEG C, dry 2 minutes.
Embodiment 2：
Once pre-process：Using 1g/L sodium hydroxide solution, temperature is 55 DEG C, and processing time was controlled at 60 seconds；
Secondary pretreatment：Using 4g/L sodium oxalate solution, temperature is 45 DEG C, and processing time was controlled at 40 seconds；
Once wash：Under normal temperature condition, pure water is washed 2 minutes；
Hair engaging aperture：Corrosive liquid is 15 wt% sulfuric acid and 5 wt% hydrochloric acid mixed solution, and temperature is 70 DEG C, and using direct current, electricity is
35 C/cm2, current density 0.5A/cm2；
Middle processing：7 wt% nitric acid, temperature are 55 DEG C, and scavenging period was controlled at 2 minutes；
Secondary washing：Under normal temperature condition, originally wash 3 minutes；
Reaming：Corrosive liquid is 5 wt% nitric acid, and temperature is 65 DEG C, and using direct current, electricity is 45 C/cm2, current density is
0.1A/cm2；
Wash three times：Under normal temperature condition, originally wash 3 minutes；
Chemical cleaning：Cleaning fluid is 8 wt% nitric acid, and temperature is 65 DEG C, and scavenging period is 2 minutes；
Four washings：Under normal temperature condition, originally wash 3 minutes；
Pure water cleans：Under normal temperature condition, pure water spray washing 6 minutes；
Dry：Under the conditions of 200 DEG C, dry 2 minutes.
Embodiment 3：
Once pre-process：Using 3g/L sodium hydroxide solution, temperature is 50 DEG C, and processing time was controlled at 40 seconds；
Secondary pretreatment：Using 1g/L sodium oxalate solution, temperature is 60 DEG C, and processing time was controlled at 40 seconds；
Once wash：Under normal temperature condition, pure water is washed 2 minutes；
Hair engaging aperture：Corrosive liquid is 15 wt% sulfuric acid and 5 wt% hydrochloric acid mixed solution, and temperature is 70 DEG C, and using direct current, electricity is
35 C/cm2, current density 0.5A/cm2；
Middle processing：7 wt% nitric acid, temperature are 55 DEG C, and scavenging period was controlled at 2 minutes；
Secondary washing：Under normal temperature condition, originally wash 3 minutes；
Reaming：Corrosive liquid is 5 wt% nitric acid, and temperature is 65 DEG C, and using direct current, electricity is 45 C/cm2, current density is
0.1A/cm2；
Wash three times：Under normal temperature condition, originally wash 3 minutes；
Chemical cleaning：Cleaning fluid is 8 wt% nitric acid, and temperature is 65 DEG C, and scavenging period is 2 minutes；
Four washings：Under normal temperature condition, originally wash 3 minutes；
Pure water cleans：Under normal temperature condition, pure water spray washing 6 minutes；
Dry：Under the conditions of 200 DEG C, dry 2 minutes.
Embodiment 4：
Once pre-process：Using 5g/L sodium hydroxide solution, temperature is 50 DEG C, and processing time was controlled at 30 seconds；
Secondary pretreatment：Using 0.5g/L sodium oxalate solution, temperature is 60 DEG C, and processing time was controlled at 60 seconds；
Once wash：Under normal temperature condition, pure water is washed 2 minutes；
Hair engaging aperture：Corrosive liquid is 15 wt% sulfuric acid and 5 wt% hydrochloric acid mixed solution, and temperature is 70 DEG C, and using direct current, electricity is
35 C/cm2, current density 0.5A/cm2；
Middle processing：7 wt% nitric acid, temperature are 55 DEG C, and scavenging period was controlled at 2 minutes；
Secondary washing：Under normal temperature condition, originally wash 3 minutes；
Reaming：Corrosive liquid is 5 wt% nitric acid, and temperature is 65 DEG C, and using direct current, electricity is 45 C/cm2, current density is
0.1A/cm2；
Wash three times：Under normal temperature condition, originally wash 3 minutes；
Chemical cleaning：Cleaning fluid is 8 wt% nitric acid, and temperature is 65 DEG C, and scavenging period is 2 minutes；
Four washings：Under normal temperature condition, originally wash 3 minutes；
Pure water cleans：Under normal temperature condition, pure water spray washing 6 minutes；
Dry：Under the conditions of 200 DEG C, dry 2 minutes.
The anode foils 560VF capacity being prepared is as follows：
This result can be seen that the corroding electrode paper tinsel using etching process output of the present invention with the Comparative result in background technology
There is lifting into rear capacity and intensity.
The uniformity that the present invention improves aluminium foil surface pit and be distributed by improving pretreatment condition, reduces subtracting for aluminium foil
Bao Liang, finally gives that hole is uniformly distributed, consistent, the residual uniform medium-high voltage aluminum electrolytic capacitor electrode of core layer thickness is grown in hole
Paper tinsel, capacity has a distinct increment with intensity after chemical conversion.
Finally it should be noted that：Although the present invention and its advantage are described in detail above it should be appreciated that not
Various changes can be carried out in the case of the spirit and scope of the present invention being defined by the claims appended hereto, substitute and
Conversion.Moreover, the scope of the present invention is not limited only to process, equipment, means, the specific reality of method and steps described by specification
Apply example.One of ordinary skilled in the art will readily appreciate that from the disclosure, according to the present invention can use hold
The row function essentially identical to corresponding embodiment described herein obtains result, the existing and future essentially identical with it
Process, equipment, means, method or step to be developed.Therefore, appended claim is wrapped in the range of being directed at them
Include such process, equipment, means, method or step.
Claims (1)
- A kind of 1. preprocess method for improving electrode foil for aluminum electrolytic capacitors hair engaging aperture density, it is characterised in that：Detailed process is such as Under：Once pre-process：Aluminium foil is once pre-processed using 0.1-10g/L sodium hydroxide solution, temperature is 20-60 DEG C, Processing time was controlled in the 20-90 seconds；Secondary pretreatment：The sodium oxalate solution for reusing 0.1-10g/L carries out secondary pretreatment to aluminium foil, and temperature is 30-70 DEG C, Processing time was controlled in the 20-120 seconds；Once wash：Pretreated aluminium foil twice will be passed through once to be washed, i.e., under normal temperature condition, 1- is washed using pure water 3 minutes；Hair engaging aperture：Aluminium foil is subjected to hair engaging aperture using corrosive liquid, the corrosive liquid is 8-40 wt% sulfuric acid and 1-10 wt% hydrochloric acid Mixed liquor, temperature are 60-90 DEG C, and using direct current, electricity is 30-60 C/cm2, current density 0.4-1.5A/cm2；Middle processing：Will aluminium foil after hair engaging aperture carry out in handle, using 1-10 wt% nitric acid, temperature is 30-70 DEG C, during cleaning Between control in 1-10 minutes；Secondary washing：Aluminium foil after middle processing is subjected to secondary washing, i.e., under normal temperature condition, using originally washing 1-3 minutes；Reaming：Aluminium foil after washing is subjected to reaming using corrosive liquid, the corrosive liquid is 1-10 wt% nitric acid, and temperature is 30-80 DEG C, using direct current, electricity is 30-60 C/cm2, current density 0.05-0.5A/cm2；Wash three times：Aluminium foil after reaming is washed three times, i.e., under normal temperature condition, using originally washing 1-3 minutes；Chemical cleaning：Aluminium foil after washing is subjected to Chemical cleaning using cleaning fluid, the cleaning fluid is 1-10 wt% nitric acid, Temperature is 30-70 DEG C, and scavenging period is 1-10 minutes；Four washings：Aluminium foil after cleaning is subjected to four washings, i.e., under normal temperature condition, using originally washing 1-3 minutes；Pure water cleans：Aluminium foil is finally subjected to pure water cleaning, i.e., under normal temperature condition, using pure water spray washing 5-10 minutes；Dry：Aluminium foil after cleaning is dried under the conditions of 100-300 DEG C, drying time is 1-5 minutes.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077574.9A CN107658135A (en) | 2017-11-06 | 2017-11-06 | A kind of preprocess method for improving electrode foil for aluminum electrolytic capacitors hair engaging aperture density |
| KR1020187034937A KR102132004B1 (en) | 2017-11-06 | 2018-04-02 | Pretreatment method to improve the pore generation density of electrode foil for aluminum electrolytic capacitors |
| PCT/CN2018/081589 WO2019085387A1 (en) | 2017-11-06 | 2018-04-02 | Pre-treatment method for increasing pore-generation density of electrode foil for aluminum electrolytic capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077574.9A CN107658135A (en) | 2017-11-06 | 2017-11-06 | A kind of preprocess method for improving electrode foil for aluminum electrolytic capacitors hair engaging aperture density |
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| CN107658135A true CN107658135A (en) | 2018-02-02 |
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| CN201711077574.9A Pending CN107658135A (en) | 2017-11-06 | 2017-11-06 | A kind of preprocess method for improving electrode foil for aluminum electrolytic capacitors hair engaging aperture density |
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| KR (1) | KR102132004B1 (en) |
| CN (1) | CN107658135A (en) |
| WO (1) | WO2019085387A1 (en) |
Cited By (2)
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|---|---|---|---|---|
| CN109518188A (en) * | 2018-12-17 | 2019-03-26 | 江苏立富电极箔有限公司 | A kind of etched foil aftertreatment technology |
| WO2019085387A1 (en) * | 2017-11-06 | 2019-05-09 | 南通海星电子股份有限公司 | Pre-treatment method for increasing pore-generation density of electrode foil for aluminum electrolytic capacitor |
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| KR100986249B1 (en) * | 2008-03-11 | 2010-10-07 | (주)에이씨티 | Natural antimicrobial and antiseptic substance made from Dryopteris crassirhizoma root extract complex |
| CN113089069B (en) * | 2020-01-09 | 2022-05-20 | 山西沃特海默新材料科技股份有限公司 | Preparation method of microporous foil |
| CN112038101B (en) * | 2020-07-24 | 2022-04-29 | 东莞东阳光科研发有限公司 | Method for etching electrode foil for aluminum electrolytic capacitor and electrode foil |
| CN112117128B (en) * | 2020-08-05 | 2022-04-22 | 乳源瑶族自治县东阳光化成箔有限公司 | High-specific-volume and high-strength medium-high voltage corrosion electrode foil and preparation method and application thereof |
| CN113913914A (en) * | 2021-08-16 | 2022-01-11 | 南通南辉电子材料股份有限公司 | Manufacturing method of capacitor electrode foil for military industry |
| CN114141542B (en) * | 2021-11-29 | 2023-12-29 | 江苏立富电极箔有限公司 | Direct current and pulse superposition corrosion process |
| CN114525576B (en) * | 2022-01-04 | 2023-10-27 | 湖南大学 | Corrosion processing method of 7XXX aluminum alloy member |
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| CN109518188A (en) * | 2018-12-17 | 2019-03-26 | 江苏立富电极箔有限公司 | A kind of etched foil aftertreatment technology |
Also Published As
| Publication number | Publication date |
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| KR102132004B1 (en) | 2020-07-08 |
| KR20190058384A (en) | 2019-05-29 |
| WO2019085387A1 (en) | 2019-05-09 |
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