CN109628979A - A kind of manufacturing method of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil - Google Patents
A kind of manufacturing method of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil Download PDFInfo
- Publication number
- CN109628979A CN109628979A CN201811565032.0A CN201811565032A CN109628979A CN 109628979 A CN109628979 A CN 109628979A CN 201811565032 A CN201811565032 A CN 201811565032A CN 109628979 A CN109628979 A CN 109628979A
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- Prior art keywords
- aluminium foil
- foil
- aqueous solution
- low pressure
- extremely low
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Classifications
-
- 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
- C25D11/16—Pretreatment, e.g. desmutting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- 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
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
-
- 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
- C25D11/12—Anodising more than once, e.g. in different baths
-
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
Abstract
The invention discloses a kind of manufacturing methods of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil, which comprises 1) pre-processes to aluminium foil；2) aluminium foil is melted into.The method the experiment proved that the surface impurity of its product is few, leakage current is low, and is also equipped with splendid specific volume by needing to carry out pretreatment process and multistage chemical conversion before chemical conversion.
Description
Technical field
The present invention relates to low-field electrode foil technical fields, in particular to a kind of system of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil
Make method.
Background technique
Electrolytic capacitor is widely used in many relevant industries such as electronics.Now, scientific and technological progress and industrial expansion, it is right
Electrolytic capacitor is put forward higher requirements in power frequency, Low ESR, long-life etc..In order to reach the higher electrical resistance of electrolytic capacitor
Can, the electrolyte using high moisture content is generally required in the capacitor, and still, at high temperature, aluminum foil oxidation film is especially positive
With moisture aquation can occur for pole foil oxide film, to lead to anode foils proof voltage in anode foils Surface Creation aluminium hydroxide
Decline, leakage current increase, or even can generate hydrogen in the capacitor, and internal pressure is caused to rise, and shell drum shell or even blasting shell, shadow occur
Electric property, the working life to electrolytic capacitor or even entire electric system are rung, even with safety.And low pressure chemical conversion or
The problems such as that presently, there are surface impurities is more for the extremely low pressure chemical synthesis technology of person, and product specific volume is undesirable.
The aforementioned discussion of background technique is intended merely to be easy to understand the present invention.The material referred to is not approved or is recognized in this discussion
Any one of be in the priority date of the application or be once public common sense a part.
Summary of the invention
The invention proposes a kind of manufacturing methods of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil, which is characterized in that the method includes
Following steps:
1) aluminium foil is pre-processed；
2) aluminium foil is melted into.
Further, described pre-process includes:
A, by aluminium foil to be processed in sodium hydroxide solution 1~3min of alkali cleaning；
B, by the aluminium foil after alkali cleaning in the mixed acid solution of acetic acid and hydrochloric acid pickling about 5min；
C, the aluminium foil after alkali cleaning is rinsed in sodium bicarbonate solution more than 5min；Then in ultrasonic environment deionized water
In embathe 2min and obtain the aluminium foil of surface cleaning；
D, aluminium foil is placed in the ammonium adipate aqueous solution that mass ratio is 0.1~10% again, under conditions of 30~85 DEG C
Dipping 0.2~take out after five minutes.
Further, described be melted into includes:
A, aluminium foil impregnated in ammonium adipate aqueous solution is placed in the water for the adipic acid that mass percent is 1~10%
In solution, required voltage is arrived to be melted under conditions of 1~50mA/ ㎝ 2 in 60~85 DEG C, current density, then uses pure water
Rinsing；
B, aluminium foil is put into the phosphate aqueous solution that mass percent is 3%, 3 points is impregnated under the conditions of temperature is 30~85 DEG C
Clock；
C, aluminium foil is placed in the citric acid that mass percent is 1~3% and the sodium metasilicate that mass percent is 0.5~2%
Mixed aqueous solution in, 30~85 DEG C, current density be 1~50mA/cm2 under conditions of, chemical conversion to constant pressure 1 under required voltage
~5 minutes, then use pure water rinse；
D, aluminium foil is used into 450~550 DEG C of progress the high temperature anneals of baking oven, the residence time is 3~5 minutes, is then set
In the ammonium adipate, ammonium dihydrogen phosphate, Triammonium citrate mixed aqueous solution that mass percent is 0.1~1%, 65~90
DEG C, under conditions of current density is 1~50mA/cm2, then chemical conversion used pure water by constant pressure 1~5 minute under required voltage
Rinsing；
E, aluminium foil is used into 500~650 DEG C of progress the high temperature anneals of baking oven, the residence time is 3~5 minutes, is then set
In the ammonium adipate, ammonium dihydrogen phosphate, Triammonium citrate mixed aqueous solution that mass percent is 0.1~1%, 55~60
DEG C, under conditions of current density is 1~50mA/cm2, then chemical conversion was taken out by constant pressure 1~5 minute under required voltage using pure
It is dried after water-removing rinsing.
Compared with the prior art, the present invention has the following advantages: the surface impurity of product is few, leakage current is low, specific volume is high.
Specific embodiment
In order to enable the objectives, technical solutions, and advantages of the present invention are more clearly understood, below in conjunction with embodiment, to this
Invention is further elaborated；It should be appreciated that described herein, the specific embodiments are only for explaining the present invention, and does not have to
It is of the invention in limiting.To those skilled in the art, after access is described in detail below, other systems of the present embodiment
System, method and/or feature will become obvious.All such additional systems, method, feature and advantage are intended to be included in
It in this specification, is included within the scope of the invention, and by the protection of the appended claims.In description described in detail below
The other feature of the disclosed embodiments, and these characteristic roots will be apparent according to described in detail below.
Embodiment one:
The present embodiment proposes a kind of manufacturing method of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil, which is characterized in that the method packet
Include following steps:
1) aluminium foil is pre-processed:
A, by aluminium foil to be processed in sodium hydroxide solution alkali cleaning 1min；
B, by the aluminium foil after alkali cleaning in the mixed acid solution of acetic acid and hydrochloric acid pickling about 5min；
C, the aluminium foil after alkali cleaning is rinsed in sodium bicarbonate solution more than 5min；Then in ultrasonic environment deionized water
In embathe 2min and obtain the aluminium foil of surface cleaning；
D, aluminium foil is placed in the ammonium adipate aqueous solution that mass ratio is 10% again, is impregnated 2 minutes under conditions of 65 DEG C
After take out.
2) aluminium foil is melted into:
A, by aluminium foil impregnated in ammonium adipate aqueous solution be placed in mass percent be 10% adipic acid it is water-soluble
In liquid, required voltage is arrived to be melted under conditions of 50mA/ ㎝ 2 in 65 DEG C, current density, then uses pure water rinse；
B, aluminium foil is put into the phosphate aqueous solution that mass percent is 3%, is impregnated 3 minutes under the conditions of temperature is 65 DEG C；
C, aluminium foil is placed in the mixing water of the citric acid that mass percent is 3% and the sodium metasilicate that mass percent is 2%
In solution, 65 DEG C, current density be 50mA/cm2 under conditions of, chemical conversion was by constant pressure 5 minutes under required voltage, then using pure
Water-removing rinsing；
D, aluminium foil is used into 450 DEG C of progress the high temperature anneals of baking oven, the residence time is 3 minutes, is subsequently placed in quality hundred
Divide in the ammonium adipate, ammonium dihydrogen phosphate, Triammonium citrate mixed aqueous solution that ratio is 1%, in 65 DEG C, current density 50mA/
Under conditions of cm2, constant pressure 5 minutes under chemical conversion to required voltage, pure water rinse is then used；
E, aluminium foil is used into 500 DEG C of progress the high temperature anneals of baking oven, the residence time is 3 minutes, is subsequently placed in quality hundred
Divide in the ammonium adipate, ammonium dihydrogen phosphate, Triammonium citrate mixed aqueous solution that ratio is 1%, in 60 DEG C, current density 50mA/
Under conditions of cm2, constant pressure 5 minutes under chemical conversion to required voltage, takes out and dried after then using pure water rinse.
Although describing the present invention by reference to various embodiments above, but it is to be understood that of the invention not departing from
In the case where range, many changes and modifications can be carried out.That is methods discussed above, system or equipment etc. show
Example.Various configurations can be omitted suitably, replace or add various processes or component.For example, in alternative configuration, can with
Described order in a different order executes method, and/or can add, and omits and/or combine the various stages.Moreover, about
The feature of certain configuration descriptions can be combined with various other configurations.Can combine in a similar way configuration different aspect and
Element.In addition, many elements are only range of the example without limiting the disclosure or claims with the development of technology.
Give detail in the description to provide to the thorough understanding for including the exemplary configuration realized.However,
Configuration can be practiced without these specific details for example, having been illustrated with well-known circuit, process, calculation
Method, structure and technology are without unnecessary details, to avoid fuzzy configuration.The description only provides example arrangement, and unlimited
The scope of the claims processed, applicability or configuration.It is used on the contrary, front will provide the description of configuration for those skilled in the art
Realize the enabled description of described technology.It, can be to the function of element without departing from the spirit or the scope of the present disclosure
It can and arrange and carry out various changes.
To sum up, be intended to foregoing detailed description be considered as it is illustrative and not restrictive, and it is to be understood that described
Claim (including all equivalents) is intended to limit the spirit and scope of the present invention.The above embodiment is interpreted as only using
In illustrating the present invention rather than limit the scope of the invention.After the content for having read record of the invention, technology
Personnel can make various changes or modifications the present invention, these equivalence changes and modification equally fall into the claims in the present invention and limited
Fixed range.
Claims (3)
1. a kind of manufacturing method of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil, which is characterized in that the described method comprises the following steps:
1) aluminium foil is pre-processed；
2) aluminium foil is melted into.
2. the manufacturing method of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil as described in claim 1, which is characterized in that the pretreatment packet
It includes:
A, by aluminium foil to be processed in sodium hydroxide solution 1~3min of alkali cleaning；
B, by the aluminium foil after alkali cleaning in the mixed acid solution of acetic acid and hydrochloric acid pickling about 5min；
C, the aluminium foil after alkali cleaning is rinsed in sodium bicarbonate solution more than 5min；Then it is soaked in ultrasonic environment deionized water
It washes 2min and obtains the aluminium foil of surface cleaning；
D, aluminium foil is placed in the ammonium adipate aqueous solution that mass ratio is 0.1~10% again, is impregnated under conditions of 30~85 DEG C
0.2~take out after five minutes.
3. the manufacturing method of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil as claimed in claim 2, which is characterized in that the chemical conversion includes:
A, aluminium foil impregnated in ammonium adipate aqueous solution is placed in the aqueous solution for the adipic acid that mass percent is 1~10%
In, required voltage is arrived to be melted under conditions of 1~50mA/ ㎝ 2 in 60~85 DEG C, current density, then uses pure water rinse；
B, aluminium foil is put into the phosphate aqueous solution that mass percent is 3%, is impregnated 3 minutes under the conditions of temperature is 30~85 DEG C；
C, aluminium foil is placed in the mixed of the citric acid that mass percent is 1~3% and the sodium metasilicate that mass percent is 0.5~2%
In Heshui solution, 30~85 DEG C, current density be 1~50mA/cm2 under conditions of, chemical conversion to constant pressure 1~5 under required voltage
Minute, then use pure water rinse；
D, aluminium foil is used into 450~550 DEG C of progress the high temperature anneals of baking oven, the residence time is 3~5 minutes, is subsequently placed in matter
It measures in ammonium adipate, ammonium dihydrogen phosphate, Triammonium citrate mixed aqueous solution that percentage is 0.1~1%, in 65~90 DEG C, electricity
Under conditions of current density is 1~50mA/cm2, constant pressure 1~5 minute under chemical conversion to required voltage, pure water rinse is then used；
E, aluminium foil is used into 500~650 DEG C of progress the high temperature anneals of baking oven, the residence time is 3~5 minutes, is subsequently placed in matter
It measures in ammonium adipate, ammonium dihydrogen phosphate, Triammonium citrate mixed aqueous solution that percentage is 0.1~1%, in 55~60 DEG C, electricity
Under conditions of current density is 1~50mA/cm2, constant pressure 1~5 minute under chemical conversion to required voltage, takes out and then floated using pure water
It is dried after washing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565032.0A CN109628979A (en) | 2018-12-20 | 2018-12-20 | A kind of manufacturing method of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565032.0A CN109628979A (en) | 2018-12-20 | 2018-12-20 | A kind of manufacturing method of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil |
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| CN109628979A true CN109628979A (en) | 2019-04-16 |
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| CN201811565032.0A Pending CN109628979A (en) | 2018-12-20 | 2018-12-20 | A kind of manufacturing method of extremely low pressure Fabrication of High Specific Capacitance Waste Acid From Hua Cheng Foil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993348A (en) * | 2019-12-25 | 2020-04-10 | 西安交通大学 | Sintered aluminum electrolytic capacitor ultrahigh-voltage anode foil and preparation method thereof |
| CN111599598A (en) * | 2020-04-30 | 2020-08-28 | 新疆众和股份有限公司 | Preparation process of high-voltage anode foil for condensed ox horn type aluminum electrolytic capacitor |
| CN111962075A (en) * | 2020-07-22 | 2020-11-20 | 肇庆市高要区华锋电子铝箔有限公司 | Preparation method of electrode foil with ultrahigh specific volume, electrode foil with ultrahigh specific volume and electrolytic capacitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993348A (en) * | 2019-12-25 | 2020-04-10 | 西安交通大学 | Sintered aluminum electrolytic capacitor ultrahigh-voltage anode foil and preparation method thereof |
| CN111599598A (en) * | 2020-04-30 | 2020-08-28 | 新疆众和股份有限公司 | Preparation process of high-voltage anode foil for condensed ox horn type aluminum electrolytic capacitor |
| CN111962075A (en) * | 2020-07-22 | 2020-11-20 | 肇庆市高要区华锋电子铝箔有限公司 | Preparation method of electrode foil with ultrahigh specific volume, electrode foil with ultrahigh specific volume and electrolytic capacitor |
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