CN109786113A - A kind of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil and its production technology - Google Patents
A kind of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil and its production technology Download PDFInfo
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- CN109786113A CN109786113A CN201711120018.5A CN201711120018A CN109786113A CN 109786113 A CN109786113 A CN 109786113A CN 201711120018 A CN201711120018 A CN 201711120018A CN 109786113 A CN109786113 A CN 109786113A
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Abstract
The present invention relates to a kind of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil and its production technologies, comprising the following steps: 1) carries out pre-treatment to electrolytic etching foil；2) liquid spray is carried out to aluminium foil with chemical solution and carries out level Four chemical conversion；3) it cleans；4) piece is burnt；5) Pyatyi, six grades of chemical conversions are carried out to level Four Waste Acid From Hua Cheng Foil, obtains six grades of Waste Acid From Hua Cheng Foils；6) it post-processes；7) reprocessed six grades of Waste Acid From Hua Cheng Foils carry out cleaning and are placed on drying in baking oven.The technique of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil of the present invention, the technology with chemical conversion tank liquid spray is increased in chemical synthesis technology, effectively remove impurity and dissolution surface fiber shape alpha-alumina crystals in etch pit, control the growth of outer layer hydrate, fine and close oxidation film is generated by six grades of chemical conversions, and then improves the specific volume and bending strength of Waste Acid From Hua Cheng Foil.
Description
Technical field
The present invention relates to a kind of Waste Acid From Hua Cheng Foil and its production technology, more particularly to a kind of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil and
Its production technology.
Background technique
The basic structure of general aluminium electrolutic capacitor is foil winding type structure, is by anode aluminium foil, electrolytic paper, cathode
4 layers of overlapping such as aluminium foil, electrolytic paper are wound.Its working media is to generate one layer in aluminium foil surface by way of anodic oxidation
The anode of oxidation film, this oxide film dielectric layer and capacitor is combined into a rounded system.The anode foils and Cathode Foil of selection
Waste Acid From Hua Cheng Foil usually after corrosion treatment, the reason is that corrosion can make the surface area of aluminium foil be far longer than its apparent surface
Product, so that the available big static capacity after chemical conversion (energizing), more effectively utilizes its practical electrode area.
In recent years, in field of electronic device, the volume of aluminium electrolutic capacitor is being gradually reduced.In order to adapt to this feelings
Condition, it is desirable that the Waste Acid From Hua Cheng Foil unit static capacity that aluminium electrolutic capacitor is selected is big.While Waste Acid From Hua Cheng Foil unit static capacity increases,
The consumption that other auxiliary materials in aluminium electrolutic capacitor manufacture can also be reduced, also further conducive to the small-sized of aluminium electrolutic capacitor
Change.The bending strength of Waste Acid From Hua Cheng Foil is bigger, and the volume occupied after the coiling is smaller, also has to the miniaturization of capacitor particularly significant
Effect.Therefore unit static capacity (hereinafter referred to as specific volume) and the bending resistance for further increasing aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil are strong
Degree is still the major subjects of current Waste Acid From Hua Cheng Foil production technology research and development.
It can be derived according to the electrostatic fundamental formular of physics, when the timing of voltage one of application, Yao Tigao Waste Acid From Hua Cheng Foil
There are three types of approach for specific volume: 1) expanding the surface area of Waste Acid From Hua Cheng Foil；2) dielectric relative dielectric constant is improved；3) oxidation film is reduced
Pressure-resistant thickness.
The production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil is generally specially following process: excessive erosion of learning from else's experience in the prior art
, purity be 99.99% aluminium foil, in water soak after take out, in electrolytic bath carry out level Four chemical conversion；Change after level Four is melted into
It is taken out at foil and carries out high-temperature heat treatment, then carry out Pyatyi chemical conversion；It takes out, is put into phosphoric acid solution and is handled；Washing is taken out, and
It is put into aqueous solution, carries out six grades of chemical conversions；Aluminium foil after six grades of chemical conversions is taken out into again post-treated, washing, drying.
However this production technology is used, oxidation film obtained is thicker in formation process and is easy corrosion treatment
The micropore in aluminium foil crossed blocks, and reduces the surface area of oxidation film, and obtained coating mass is lower, is melted into because prepared by
Foil haves the defects that mechanical strength is low, specific volume is relatively low in actual operation, is not able to satisfy the demand of production aluminium electrolutic capacitor.Cause
This, previous chemical conversion production control method can either be broken through, improve technique by needing to seek one kind, reach Condenser Factory to Waste Acid From Hua Cheng Foil
The requirement of the performance indexess such as high intensity, Fabrication of High Specific Capacitance, resistance to hydrability.
Summary of the invention
The object of the present invention is to provide a kind of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil and its production technology, produce it
Waste Acid From Hua Cheng Foil has the advantages that Fabrication of High Specific Capacitance and high-flexural strength.
A kind of production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil, comprising the following steps:
1) electrolytic etching treated aluminium foil is subjected to pre-treatment；
2) liquid spray is carried out to the aluminium foil after pre-treatment with level-one chemical solution and carries out level-one chemical conversion, obtain level-one
At foil；Liquid spray is carried out to level-one Waste Acid From Hua Cheng Foil with second level chemical solution and carries out second level chemical conversion, obtains second level Waste Acid From Hua Cheng Foil；With three
Grade chemical solution carries out liquid spray to second level Waste Acid From Hua Cheng Foil and carries out three-level chemical conversion, obtains three-level Waste Acid From Hua Cheng Foil；It is melted into level Four molten
Liquid carries out liquid spray to three-level Waste Acid From Hua Cheng Foil and carries out level Four chemical conversion, obtains level Four Waste Acid From Hua Cheng Foil；
3) level Four Waste Acid From Hua Cheng Foil is placed in cleaning solution and is cleaned；
4) the level Four Waste Acid From Hua Cheng Foil after cleaning is placed in burning piece furnace and carries out burning piece；
5) Pyatyi chemical conversion is carried out to the level Four Waste Acid From Hua Cheng Foil after burning piece with Pyatyi chemical solution, obtains Pyatyi Waste Acid From Hua Cheng Foil；With six
Grade chemical solution carries out six grades of chemical conversions to Pyatyi Waste Acid From Hua Cheng Foil, obtains six grades of Waste Acid From Hua Cheng Foils；
6) six grades of Waste Acid From Hua Cheng Foils are post-processed；
7) it after to six grades of Waste Acid From Hua Cheng Foils cleaning after post treatment, places it in dry in baking oven.
The technique of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil of the present invention, the step of increasing with chemical conversion tank liquid spray,
Using the acidity of chemical solution, impurity in the aluminium foil corrosion hole after corrosion treatment is effectively removed in spray avoids Waste Acid From Hua Cheng Foil from existing
Corrosive degradation occurs in Working electrolyte and loses dielectric properties；The fibrous oxygen of chemical solution dissolution aluminium foil surface is utilized simultaneously
Change aluminium crystal, control the growth of outer layer aqua oxidation film, so that the oxidation film obtained in chemical synthesis technology is finer and close, pressure resistance is thick
Spend specific volume and bending strength smaller, and then that improve Waste Acid From Hua Cheng Foil.
Further, pretreatment process described in step 1) are as follows: treated that aluminium foil is placed in temperature is by electrolytic etching
It is soaked 5~20 minutes in 90 DEG C or more of pure water.The process of pre-treatment is that aluminium foil surface and hot water reaction is made to generate one layer of hydration oxygen
Change film, structure is the outer layer of the fine and close and even equal internal layer aluminium hydroxide of thickness and loose threadiness.The aqua oxidation film exists
Current efficiency is higher when chemical conversion, and forms electricity reduction, thus saves electric energy when chemical conversion, to reduce in formation process
Energy consumption.
Further, the spray flow of the spray of liquid described in step 2) is 20~100L/h, and spray time is 1~5 point
Clock.It is intended that sufficiently being dissolved impurity by the parameter of control spray process, the thickness of outer layer aqua oxidation film is controlled, is kept away
The aqua oxidation film for exempting to be formed in pretreatment process is blocked up, and the micropore in the aluminium foil after corrosion treatment is blocked to reduce corrosion
The surface area of aluminium foil after processing；And keep the oxidation film formed in subsequent formation process finer and close, to increase Waste Acid From Hua Cheng Foil
Specific volume.
Further, the chemical conversion of level-one described in step 2), second level chemical conversion, three-level chemical conversion, level Four chemical conversion be respectively adopted 60~
The current density of the formation voltage of 300V, 50~200mA/cm2, chemical conversion time are 1~20 clock, the level-one chemical solution, two
Grade chemical solution, three-level chemical solution, level Four chemical solution are respectively the boric acid for 2wt%~8wt% that temperature is 80~95 DEG C
Solution.
Further, the pure water solution that cleaning solution described in step 3) is 40~90 DEG C.
Further, the temperature of burning piece described in step 4) is 100~400 DEG C.Use the burning piece temperature, it is therefore intended that
It opens the cracking hole of oxidation film at lower temperature, the hole that is cracked is enable when continuously forming oxidation film in subsequent formation process
It preferably repairs, improves the defect of oxidation film, improve the specific volume of Waste Acid From Hua Cheng Foil, meanwhile, keep the oxidation film of Waste Acid From Hua Cheng Foil more soft, in turn
Improve the bending strength of Waste Acid From Hua Cheng Foil.
Further, the chemical conversion of Pyatyi described in step 5) and six grades, which are melted into, is respectively adopted the formation voltage of 300~600V, and 50
~200mA/cm2 current density, chemical conversion time are 1~30 minute, and the Pyatyi chemical solution, six grades of chemical solutions are respectively temperature
Degree is 80~95 DEG C of 2wt%~8wt% boric acid solution and the mixed solution of 0.2wt%~3wt% ammonium hydroxide.
Further, last handling process described in step 6) are as follows: six grades of Waste Acid From Hua Cheng Foils will be passed through in the phosphorus of 3wt%~8wt%
In acid solution, impregnated 3~12 minutes under conditions of 45~70 DEG C.The purpose is to make oxidation film adsorption phosphate anion,
Make oxidation film that there is better resistance to hydration performance.
Further, the drying temperature of baking oven described in step 7) is 80~200 DEG C.It is intended that drying Waste Acid From Hua Cheng Foil
Moisture inside surface area avoids oxidation film and water to react during the storage of product and generates unbodied aqua oxidation
Object makes the dielectric properties of Waste Acid From Hua Cheng Foil that deterioration occur and reduce specific volume.
In order to better understand and implement, the present invention will be described in detail combined with specific embodiments below.
Specific embodiment
Embodiment 1
With high-intensitive Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil production technology in a kind of aluminium electrolutic capacitor, include the following steps:
It takes the purity after electrolytic etching to be placed in 97 DEG C of pure water for 99.99% aluminium foil to soak 12 minutes.
In level-one electrolytic bath, liquid spray is carried out simultaneously to the aluminium foil after pre-treatment with the boric acid solution of 85 DEG C of 2wt%
Level-one chemical conversion is carried out, level-one Waste Acid From Hua Cheng Foil is obtained；Wherein, the flow of liquid spray is 20L/h, and spray time is 1 minute；Level-one
At formation voltage be 80V, current density 60mA/cm2, chemical conversion the time be 5 minutes.
In second level electrolytic bath, liquid spray is carried out to level-one Waste Acid From Hua Cheng Foil with the boric acid solution of 85 DEG C of 2wt%, and carry out
Second level chemical conversion, obtains second level Waste Acid From Hua Cheng Foil；Wherein, liquid spray flow is 20L/h, and spray time is 1 minute, the change of second level chemical conversion
It is 150V, current density 60mA/cm2 at voltage, the chemical conversion time is 5 minutes.
In three-level electrolytic bath, liquid spray is carried out to second level Waste Acid From Hua Cheng Foil with the boric acid solution of 85 DEG C of 8wt%, and carry out
Three-level chemical conversion, obtains three-level Waste Acid From Hua Cheng Foil；Wherein, liquid spray flow is 20L/h, and spray time is 1 minute, three-level formation voltage
For 220V, current density 60mA/cm2, being melted into the time is 5 minutes.
In level Four electrolytic bath, liquid spray is carried out to three-level Waste Acid From Hua Cheng Foil with the boric acid solution of 85 DEG C of 8wt%, and carry out
Level Four chemical conversion, obtains level Four Waste Acid From Hua Cheng Foil；Wherein, liquid spray flow is 20L/h, and spray time is 1 minute, and formation voltage is
300V, current density 60mA/cm2, chemical conversion time are 5 minutes.
Level Four Waste Acid From Hua Cheng Foil is placed in 40 DEG C of pure water solution and is cleaned 5 minutes.
Waste Acid From Hua Cheng Foil after cleaning is placed in 300 DEG C of burning piece furnace and is burnt piece 3 minutes.
In Pyatyi electrolytic bath, with 85 DEG C of 8wt% boric acid solutions and 1.5wt% ammonium hydroxide mixed solution to four after burning piece
Grade Waste Acid From Hua Cheng Foil carries out Pyatyi chemical conversion, obtains Pyatyi Waste Acid From Hua Cheng Foil；Wherein, formation voltage 420V, current density 60mA/cm2 change
It is 5 minutes at the time.
In six grades of electrolytic baths, Pyatyi is melted into the mixed solution of 85 DEG C of 8wt% boric acid solutions and 1.5wt% ammonium hydroxide
Foil carries out six grades of chemical conversions, obtains six grades of Waste Acid From Hua Cheng Foils；Wherein, formation voltage 520V, current density 60mA/cm2 are melted into the time
It is 5 minutes.
After impregnating 6 minutes in the phosphoric acid solution for the 8wt% that six grades of Waste Acid From Hua Cheng Foils are placed in 60 DEG C, it is placed in 40 DEG C of pure water solution
Middle cleaning 5 minutes.
Six grades of Waste Acid From Hua Cheng Foils after cleaning are placed in baking oven, are dried 3 minutes at 150 DEG C.
Embodiment 2
With high-intensitive Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil production technology in a kind of aluminium electrolutic capacitor, include the following steps:
It takes the purity after electrolytic etching to be placed in 97 DEG C of pure water for 99.99% aluminium foil to soak 12 minutes.
In level-one electrolytic bath, liquid spray is carried out simultaneously to the aluminium foil after pre-treatment with the boric acid solution of 85 DEG C of 2wt%
Level-one chemical conversion is carried out, level-one Waste Acid From Hua Cheng Foil is obtained；Wherein, liquid spray flow is 40L/h, and spray time is 1 minute；Level-one chemical conversion
Voltage is 80V, current density 60mA/cm2, and the chemical conversion time is 5 minutes.
In second level electrolytic bath, liquid spray is carried out to level-one Waste Acid From Hua Cheng Foil with the boric acid solution of 85 DEG C of 2wt%, and carry out
Second level chemical conversion, obtains second level Waste Acid From Hua Cheng Foil；Wherein, liquid spray flow is 40L/h, and spray time is 1 minute, second level formation voltage
It is 150, current density 60mA/cm2, the chemical conversion time is 5 minutes.
In three-level electrolytic bath, liquid spray is carried out to second level Waste Acid From Hua Cheng Foil with the boric acid solution of 85 DEG C of 8wt%, and carry out
Three-level chemical conversion, obtains three-level Waste Acid From Hua Cheng Foil；Wherein, liquid spray flow is 40L/h, and spray time is 1 minute, three-level formation voltage
For 220V, current density 60mA/cm2, being melted into the time is 5 minutes.
In level Four electrolytic bath, liquid spray is carried out to three-level Waste Acid From Hua Cheng Foil with the boric acid solution of 85 DEG C of 8wt%, and carry out
Level Four chemical conversion, obtains level Four Waste Acid From Hua Cheng Foil；Wherein, liquid spray flow is 40L/h, and spray time is 1 minute, and formation voltage is
300V, current density 60mA/cm2, chemical conversion time are 5 minutes.
Level Four Waste Acid From Hua Cheng Foil is placed in 90 DEG C of pure water solution and is cleaned 5 minutes.
Level Four Waste Acid From Hua Cheng Foil after cleaning is placed in 330 DEG C of burning piece furnace and is burnt piece 5 minutes.
In Pyatyi electrolytic bath, with the mixed solution of 85 DEG C of 8wt% boric acid solutions and 1.5wt% ammonium hydroxide to burn piece after
Level Four Waste Acid From Hua Cheng Foil carries out Pyatyi chemical conversion, obtains Pyatyi Waste Acid From Hua Cheng Foil；Wherein, formation voltage 420V, current density 60mA/cm2,
Being melted into the time is 5 minutes.
In six grades of electrolytic baths, Pyatyi is melted into the mixed solution of 85 DEG C of 8wt% boric acid solutions and 1.5wt% ammonium hydroxide
Foil carries out six grades of chemical conversions, obtains six grades of Waste Acid From Hua Cheng Foils；Wherein, formation voltage 520V, current density 60mA/cm2 are melted into the time
It is 5 minutes.
Six grades of Waste Acid From Hua Cheng Foils are placed in 60 DEG C of 8wt% phosphoric acid solution after impregnating 6 minutes, are placed in 40 DEG C of pure water solution
Cleaning 5 minutes.
Six grades of Waste Acid From Hua Cheng Foils after cleaning are placed in baking oven, are dried 3 minutes at 150 DEG C.
Comparative example 1
It takes the purity after electrolytic etching to be placed in 97 DEG C of pure water for 99.99% aluminium foil to soak 12 minutes.
It is sprayed without liquid, level-one chemical conversion is carried out to the aluminium foil after pre-treatment with the boric acid solution of 85 DEG C of 2wt%, is obtained
Level-one Waste Acid From Hua Cheng Foil；Wherein, level-one formation voltage is 80V, current density 60mA/cm2, and the chemical conversion time is 5 minutes.
It is sprayed without liquid, second level chemical conversion is carried out to level-one Waste Acid From Hua Cheng Foil with the boric acid solution of 85 DEG C of 2wt%, obtains second level
Waste Acid From Hua Cheng Foil；Wherein, second level formation voltage is 150V, current density 60mA/cm2, and the chemical conversion time is 5 minutes.
It is sprayed without liquid, three-level chemical conversion is carried out to second level Waste Acid From Hua Cheng Foil with the boric acid solution of 85 DEG C of 8wt%, obtains three-level
Waste Acid From Hua Cheng Foil；Wherein, three-level formation voltage is 220V, current density 60mA/cm2, and the chemical conversion time is 5 minutes.
It is sprayed without liquid, level Four chemical conversion is carried out to three-level Waste Acid From Hua Cheng Foil with the boric acid solution of 85 DEG C of 8wt%, obtains level Four
Waste Acid From Hua Cheng Foil；Wherein, level Four formation voltage is 300V, current density 60mA/cm2, and the chemical conversion time is 5 minutes.
Level Four Waste Acid From Hua Cheng Foil is placed in 40 DEG C of pure water solution and is cleaned 5 minutes.
Level Four Waste Acid From Hua Cheng Foil after cleaning is placed in 200 DEG C of burning piece furnace and is burnt piece 3 minutes.
In Pyatyi electrolytic bath, with the mixed solution of the boric acid solution of 85 DEG C of 8wt% and 1.5wt% ammonium hydroxide to piece is burnt after
Level Four Waste Acid From Hua Cheng Foil carry out Pyatyi chemical conversion, obtain Pyatyi Waste Acid From Hua Cheng Foil；Wherein, formation voltage 420V, current density 60mA/
Cm2, chemical conversion time are 5 minutes.
In six grades of electrolytic baths, with the boric acid solution of 85 DEG C of 8wt% and the mixed solution of 1.5wt% ammonium hydroxide to Pyatyi
Six grades of chemical conversions are carried out at foil, obtain six grades of Waste Acid From Hua Cheng Foils；Wherein, formation voltage 520V, current density 60mA/cm2, when chemical conversion
Between be 5 minutes.
Six grades of Waste Acid From Hua Cheng Foils are impregnated in 60 DEG C of 8wt% phosphoric acid solution and are placed within 6 minutes in 40 DEG C of pure water solution clearly
It washes 5 minutes.
Six grades of Waste Acid From Hua Cheng Foils after cleaning are placed in baking oven, are dried 3 minutes at 150 DEG C.
Performance test
Example 1,2 and the chemical conversion foil sample obtained of comparative example 1, using MIT-DA-Foldding Endurance
Tester bending strength-testing machine, to measure its bending intensity.Use the non-Waste Acid From Hua Cheng Foil of total 40000 μ F of static capacity or more as pair
Pole, using specific volume test loop device to test specific volume, test result is shown in Table 1.
Table 1
As can be seen that compared with prior art, being had using Waste Acid From Hua Cheng Foil made from production technology of the invention higher anti-
Curved intensity and specific volume.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.
Claims (10)
1. a kind of production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil, comprising the following steps:
1) electrolytic etching treated aluminium foil is subjected to pre-treatment；
2) liquid spray is carried out to the aluminium foil after pre-treatment with level-one chemical solution and carries out level-one chemical conversion, obtain level-one chemical conversion
Foil；Liquid spray is carried out to level-one Waste Acid From Hua Cheng Foil with second level chemical solution and carries out second level chemical conversion, obtains second level Waste Acid From Hua Cheng Foil；Use three-level
Chemical solution carries out liquid spray to second level Waste Acid From Hua Cheng Foil and carries out three-level chemical conversion, obtains three-level Waste Acid From Hua Cheng Foil；With level Four chemical solution
Liquid spray is carried out to three-level Waste Acid From Hua Cheng Foil and carries out level Four chemical conversion, obtains level Four Waste Acid From Hua Cheng Foil；
3) level Four Waste Acid From Hua Cheng Foil is placed in cleaning solution and is cleaned；
4) the level Four Waste Acid From Hua Cheng Foil after cleaning is placed in burning piece furnace and carries out burning piece；
5) Pyatyi chemical conversion is carried out to the level Four Waste Acid From Hua Cheng Foil after burning piece with Pyatyi chemical solution, obtains Pyatyi Waste Acid From Hua Cheng Foil；Changed with six grades
Six grades of chemical conversions are carried out to Pyatyi Waste Acid From Hua Cheng Foil at solution, obtain six grades of Waste Acid From Hua Cheng Foils；
6) six grades of Waste Acid From Hua Cheng Foils are post-processed；
7) it after to six grades of Waste Acid From Hua Cheng Foils cleaning after post treatment, places it in dry in baking oven.
2. the production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil according to claim 1, it is characterised in that: institute in step 2)
The spray flow for stating liquid spray is 20~100L/h, and spray time is 1~5 minute.
3. the production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil according to claim 2, it is characterised in that: step 2) is described
Level-one chemical conversion, second level chemical conversion, three-level chemical conversion, level Four are melted into the formation voltage, 50~200mA/cm2 that 60~300V is respectively adopted
Current density, chemical conversion time are 1~20 minute, the level-one chemical solution, second level chemical solution, three-level chemical solution, level Four
Chemical solution is respectively the boric acid solution for 2wt%~8wt% that temperature is 80~95 DEG C.
4. the production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil according to claim 1, it is characterised in that: institute in step 4)
The burning piece temperature stated is 100~400 DEG C.
5. the production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil according to claim 1, it is characterised in that: institute in step 5)
It states Pyatyi chemical conversion and six grades is melted into the formation voltage of 300~600V is respectively adopted, 50~200mA/cm2 current density, when chemical conversion
Between be 1~30 minute, the Pyatyi chemical solution, six grades of chemical solutions are respectively that temperature is 80~95 DEG C of 2wt%~8wt%
Boric acid solution and 0.2wt%~3wt% ammonium hydroxide mixed solution.
6. the production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil according to claim 1, it is characterised in that: institute in step 1)
The pretreatment process stated are as follows: soaked 5~20 minutes in the pure water for being 90 DEG C or more by electrolytic etching treated aluminium foil is placed in temperature.
7. the production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil according to claim 1, it is characterised in that: institute in step 3)
State the pure water solution that cleaning solution is 40~90 DEG C.
8. the production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil according to claim 1, it is characterised in that: institute in step 6)
State last handling process are as follows: six grades of Waste Acid From Hua Cheng Foils will be passed through in the phosphoric acid solution of 3wt%~8wt%, under conditions of 45~70 DEG C
It impregnates 3~12 minutes.
9. the production technology of aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil according to claim 1, it is characterised in that: step 7) is described
Baking oven drying temperature be 80~200 DEG C.
10. using the aluminium electrolutic capacitor Waste Acid From Hua Cheng Foil of the preparation of production technology described in any one claim of claim 1~9.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578163A (en) * | 2019-10-21 | 2019-12-17 | 佛山科学技术学院 | Manufacturing method of medium-pressure corrosion foil |
| CN110783108A (en) * | 2019-10-18 | 2020-02-11 | 佛山科学技术学院 | Method for manufacturing corrosion foil |
| CN113611539A (en) * | 2021-07-13 | 2021-11-05 | 乳源县立东电子科技有限公司 | Low-voltage soft-state corrosion anode aluminum foil and preparation method and application thereof |
-
2017
- 2017-11-14 CN CN201711120018.5A patent/CN109786113A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110783108A (en) * | 2019-10-18 | 2020-02-11 | 佛山科学技术学院 | Method for manufacturing corrosion foil |
| CN110578163A (en) * | 2019-10-21 | 2019-12-17 | 佛山科学技术学院 | Manufacturing method of medium-pressure corrosion foil |
| CN110578163B (en) * | 2019-10-21 | 2021-08-24 | 佛山科学技术学院 | Manufacturing method of medium-pressure corrosion foil |
| CN113611539A (en) * | 2021-07-13 | 2021-11-05 | 乳源县立东电子科技有限公司 | Low-voltage soft-state corrosion anode aluminum foil and preparation method and application thereof |
| CN113611539B (en) * | 2021-07-13 | 2022-04-22 | 乳源县立东电子科技有限公司 | Low-voltage soft-state corrosion anode aluminum foil and preparation method and application thereof |
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