CN108085697B - Acid aluminum anodic oxide film remover and preparation method and use method thereof - Google Patents
Acid aluminum anodic oxide film remover and preparation method and use method thereof Download PDFInfo
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- CN108085697B CN108085697B CN201711452198.7A CN201711452198A CN108085697B CN 108085697 B CN108085697 B CN 108085697B CN 201711452198 A CN201711452198 A CN 201711452198A CN 108085697 B CN108085697 B CN 108085697B
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- acid
- oxide film
- anodic oxide
- aluminum anodic
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
Abstract
The invention belongs to the technical field of aluminum alloy surface treatment, and particularly relates to an acid aluminum anodic oxide film remover as well as a preparation method and a use method thereof; the remover consists of 150-400 g/L of acidic stripping agent, 30-50 g/L of corrosion inhibitor, 50-100 g/L of complexing agent, 10-100 g/L of surfactant, 30-200 g/L of organic solvent and the balance of water; the removing process comprises the following steps: heating the stock solution to 70-90 ℃, soaking the workpiece for 8-30 min, rinsing and drying. The invention not only can completely remove the aluminum anode film on the surface of the metal workpiece, but also can not corrode the surface of the base material such as aluminum alloy and the like after being placed in the remover for a long time, so that the base material still keeps the original luster of the metal.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy surface treatment, and particularly relates to an acid aluminum anodic oxide film remover as well as a preparation method and a use method thereof.
Background
The aluminum anodic oxide film has a series of excellent properties, not only is the aluminum universal surface protective film, but also the colored aluminum anodic oxide film has exquisite decorative properties. In the process of anodic oxidation, the anode film is unqualified due to reasons such as poor size of the oxide film, uneven coloring or defective hole sealing, and the anode film needs to be removed for anodic oxidation again. The existing stripping agent for stripping the anodic film generally adopts alkaline solution, but the defect of alkaline stripping causes serious corrosion to aluminum materials, and the time for stripping the anodic film is not well controlled.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an acidic aluminum anodic oxide film remover which is rapid and does not cause severe corrosion of an aluminum material.
The invention also aims to provide a preparation method of the acid aluminum anodic oxide film remover.
The invention also provides a use method of the acid aluminum anodic oxide film remover.
The invention is realized by the following technical scheme:
an acid aluminum anodic oxide film remover, which consists of an acid stripping agent, a corrosion inhibitor, a complexing agent, a surfactant, an organic solvent and water, wherein:
the acid stripping agent is at least one of citric acid, phosphoric acid, malonic acid, diethylenetriamine pentaacetic acid or sulfamic acid, and the content of the acid stripping agent is 150-500 g/L;
the corrosion inhibitor is at least one of β -diketone, sodium alginate, Lan-826, Tween-85 and glycine, and the content of the corrosion inhibitor is 30-50 g/L;
the complexing agent is at least one of tetrasodium iminodisuccinate, pentasodium diethylenetriamine pentaacetic acid (DTPA) and hydroxyethyl ethylenediamine triacetic acid (HEDTA), and the content of the complexing agent is 4S 0-100 g/L;
the surfactant is fatty alcohol-polyoxyethylene ether, and the content of the surfactant is 10-100 g/L;
the organic solvent is at least one of 3-methoxybutanol, 2-methylpentanediol and propylene glycol, and the content is 30-200 g/L;
the water is deionized water.
The preparation method of the acid aluminum anodic oxide film remover comprises the following steps: adding three-fourths of water metered according to the acid aluminum anodic oxide film remover into a container, sequentially adding a complexing agent, an organic solvent, a corrosion inhibitor, a surfactant and an acid stripping agent, adding the former substance after dissolving, adding the latter substance after completely dissolving, and supplementing water to a metered value after completely dissolving to finish preparation, thereby obtaining the acid aluminum anodic oxide film remover. The order of adding various substances is important, and the addition of the former substance after the former substance is dissolved is essentially to add the latter substance after the former two substances are completely reacted; whether the reaction is complete directly affects the quality of the final stripping agent.
The use method of the acid aluminum anodic oxide film remover comprises the following steps: heating the acid aluminum anodic oxide film remover to 70-90 ℃, soaking the workpiece in the acid aluminum anodic oxide film remover for 8-30 min, and finally taking out, rinsing and drying to finish removal of the acid aluminum anodic oxide film.
Preferably, the acid aluminum anodic oxide film remover is heated to 75-85 ℃, more preferably 80-85 ℃.
Preferably, the workpiece is soaked in the acid aluminum anodic oxide film remover for 8-25 min and 8-20 min. .
The invention provides a stable and excellent-performance acid aluminum anodic oxide film removing technology, which does not damage or corrode a base material in the removing process, improves the productivity and promotes the development of the technical field of aluminum alloy surface treatment. The aluminum anode film on the surface of the metal workpiece can be thoroughly removed, the surface of the base material such as aluminum alloy and the like can not be corroded within 40-60 min under the removing environment, and the original luster of the metal is still maintained.
Drawings
FIG. 1 is a comparison of the front and back of the mobile phone rear cover (7 series aluminum) after anode film stripping;
FIG. 2 is a photograph of a mobile phone rear cover (series 7 aluminum) after being placed in the remover of the present invention for 40 minutes after the anode film is removed;
FIG. 3 is a photograph of a mobile phone back cover (series 7 aluminum) after being placed in the remover of the present invention for 60 minutes after the anode film is removed.
Detailed Description
The present invention is described in further detail below with reference to specific embodiments to assist those skilled in the art in understanding the present invention.
Example 1
The acid aluminum anodic oxide film remover comprises 320g of acid stripping agent (190 g of malonic acid and 130g of sulfamic acid) in 1L of remover, 35g of sodium alginate as a corrosion inhibitor, 85g of complexing agent (50 g of tetrasodium iminodisuccinate, 15g of DTPA and 20g of HEDTA), 20g of fatty alcohol-polyoxyethylene ether and 30g of 3-methoxybutanol as an organic solvent.
The preparation method of the acid aluminum anodic oxide film remover comprises the following steps: adding three-fourths of water metered according to the acid aluminum anodic oxide film remover into a container, sequentially adding a complexing agent, an organic solvent, a corrosion inhibitor, a surfactant and an acid stripping agent, adding the former substance after dissolving, adding the latter substance after completely dissolving, and supplementing water to a metered value after completely dissolving to finish preparation, thereby obtaining the acid aluminum anodic oxide film remover.
The use method of the acid aluminum anodic oxide film remover comprises the following steps: heating the acid aluminum anodic oxide film remover to 90 ℃, soaking the workpiece in the acid aluminum anodic oxide film remover for 10min, and finally taking out, rinsing and drying to finish removing the acid aluminum anodic oxide film.
Example 2
An acid aluminum anodic oxide film remover comprises 462g of an acid stripping agent (100 g of citric acid, 350g of malonic acid and 12g of diethylenetriamine pentaacetic acid) in 1L of the remover, 40g of a complexing agent (28 g of tetrasodium iminodisuccinate and 12g of hydroxyethyl ethylenediamine triacetic acid), 25g of fatty alcohol-polyoxyethylene ether and 30g of 3-methoxybutanol.
The preparation method of the acid aluminum anodic oxide film remover comprises the following steps: the same as in example 1.
The use method of the acid aluminum anodic oxide film remover comprises the following steps: the difference from the example 1 is that the working temperature is 85 ℃, and the workpiece is soaked in the acid aluminum anodic oxide film remover for 15 min.
Example 3
The acid aluminum anodic oxide film remover comprises 500g of acid stripping agent (400 g of citric acid and 100g of malonic acid) in 1L of remover, 32g of corrosion inhibitor (8518 g of Tween-L and 14g of glycine), 50g of hydroxyethyl ethylenediamine triacetic acid as a complexing agent, 22g of fatty alcohol-polyoxyethylene ether and 30g of propylene glycol as an organic solvent.
The preparation method of the acid aluminum anodic oxide film remover comprises the following steps: the same as in example 1.
The use method of the acid aluminum anodic oxide film remover comprises the following steps: the difference from the example 1 is that the working temperature is 75 ℃, and the workpiece is soaked in the acid aluminum anodic oxide film remover for 30 min.
Example 4
150g of acid stripping agent (30 g of citric acid, 100g of phosphoric acid, 10g of malonic acid and 10g of sulfamic acid) in 1L of stripping agent, 50g of corrosion inhibitor (β -diketone, 10g of sodium alginate and Lan-82630g of corrosion inhibitor), 60g of complexing agent (tetrasodium iminodisuccinate 50g and pentasodium diethylenetriamine pentaacetic acid 10g of complexing agent), 10g of fatty alcohol-polyoxyethylene ether and 100g of 3-methoxybutanol.
The preparation method of the acid aluminum anodic oxide film remover comprises the following steps: the same as in example 1.
The use method of the acid aluminum anodic oxide film remover comprises the following steps: the difference from the example 1 is that the working temperature is 80 ℃, and the workpiece is soaked in the acid aluminum anodic oxide film remover for 25 min.
Example 5
250g of sulfamic acid in 1L of remover, 40g of corrosion inhibitor (wherein β -diketone is 20g, sodium alginate is 20g), 75g of tetrasodium iminodisuccinate is 50g of fatty alcohol-polyoxyethylene ether, and 50g of organic solvent (wherein 3-methoxybutanol is 30g, 2-methylpentanediol is 10g, and propylene glycol is 10 g).
The preparation method of the acid aluminum anodic oxide film remover comprises the following steps: the same as in example 1.
The use method of the acid aluminum anodic oxide film remover comprises the following steps: the difference from the example 1 is that the working temperature is 92 ℃, and the workpiece is soaked in the acid aluminum anodic oxide film remover for 20 min.
Example 6
The acid aluminum anodic oxide film remover comprises 350g of phosphoric acid in 1L of remover, 8545g of Tween-100 g of complexing agent (30 g of tetrasodium iminodisuccinate, 30g of pentasodium diethylenetriamine pentaacetic acid and 40g of hydroxyethyl ethylenediamine triacetic acid), 45g of fatty alcohol-polyoxyethylene ether and 65g of organic solvent (30 g of 3-methoxybutanol and 35g of 2-methylpentanediol).
The preparation method of the acid aluminum anodic oxide film remover comprises the following steps: the same as in example 1.
The use method of the acid aluminum anodic oxide film remover comprises the following steps: the difference from the example 1 is that the working temperature is 92 ℃, and the workpiece is soaked in the acid aluminum anodic oxide film remover for 20 min.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, so that equivalent changes or modifications made by the features and principles of the present invention as described in the claims should be included in the scope of the present invention.
As can be seen from FIG. 1, the present invention can completely remove the aluminum anode film on the surface of the metal workpiece; from fig. 2 and 3, it can be seen that the workpiece with the aluminum anodic film removed from the surface is continuously placed in the remover for 40-60 min, so that the surface of the base material such as aluminum alloy is not corroded, and the original luster of the metal is still maintained.
Claims (7)
1. The acid aluminum anodic oxide film remover is characterized by comprising an acid stripping agent, a corrosion inhibitor, a complexing agent, a surfactant, an organic solvent and water, wherein:
the acid stripping agent is at least one of citric acid, phosphoric acid, malonic acid, diethylenetriamine pentaacetic acid or sulfamic acid, and the content of the acid stripping agent is 150-500 g/L;
the corrosion inhibitor is at least one of β -diketone, sodium alginate, Lan-826, Tween-85 and glycine, and the content of the corrosion inhibitor is 30-50 g/L;
the complexing agent is at least one of tetrasodium iminodisuccinate, pentasodium diethylenetriamine pentaacetic acid and hydroxyethyl ethylenediamine triacetic acid, and the content of the complexing agent is 40-100 g/L;
the surfactant is fatty alcohol-polyoxyethylene ether, and the content of the surfactant is 10-100 g/L;
the organic solvent is at least one of 3-methoxybutanol, 2-methylpentanediol and propylene glycol, and the content is 30-200 g/L;
the water is deionized water.
2. The preparation method of the acid aluminum anodic oxide film remover according to claim 1, characterized by comprising the following steps:
adding three-fourths of water metered according to the acid aluminum anodic oxide film remover into a container, sequentially adding a complexing agent, an organic solvent, a corrosion inhibitor, a surfactant and an acid stripping agent, adding the former substance after dissolving, adding the latter substance after completely dissolving, and supplementing water to a metered value after completely dissolving to finish preparation, thereby obtaining the acid aluminum anodic oxide film remover.
3. The use method of the acid aluminum anodic oxide film remover according to claim 1, wherein the use method comprises the following steps: heating the acid aluminum anodic oxide film remover to 70-90 ℃, soaking the workpiece in the acid aluminum anodic oxide film remover for 8-30 min, and finally taking out, rinsing and drying to finish removal of the acid aluminum anodic oxide film.
4. The use method of the acid aluminum anodic oxide film remover according to claim 3, wherein the acid aluminum anodic oxide film remover is heated to 75-85 ℃.
5. The method for using the remover for anodic oxide film of acidic aluminum according to claim 4, wherein the remover for anodic oxide film of acidic aluminum is heated to 80-85 ℃.
6. The use method of the acid aluminum anodic oxide film remover according to claim 3, wherein the workpiece is soaked in the acid aluminum anodic oxide film remover for 8-25 min.
7. The use method of the acid aluminum anodic oxide film remover according to claim 6, wherein the workpiece is soaked in the acid aluminum anodic oxide film remover for 8-20 min.
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| CN201711452198.7A CN108085697B (en) | 2017-12-28 | 2017-12-28 | Acid aluminum anodic oxide film remover and preparation method and use method thereof |
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| CN108085697B true CN108085697B (en) | 2020-02-07 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108950643B (en) * | 2018-08-07 | 2020-09-22 | 广东山之风环保科技有限公司 | Alkaline aluminum anodic oxide film remover and preparation method and use method thereof |
| CN111155121A (en) * | 2020-01-09 | 2020-05-15 | 湖南省新源素生物工程有限公司 | Aluminum-magnesium alloy film remover |
| CN114156099A (en) * | 2021-12-06 | 2022-03-08 | 北京七星飞行电子有限公司 | Method for processing capacitor lead |
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| CN103305855A (en) * | 2013-06-06 | 2013-09-18 | 北京航空航天大学 | Energy-saving and environment-friendly aluminum alloy anode oxide film stripping process |
| CN104498967A (en) * | 2014-12-31 | 2015-04-08 | 苏州禾川化学技术服务有限公司 | Multifunctional aluminum material corrosion-inhibition polishing pickling agent |
| CN105132928A (en) * | 2015-09-08 | 2015-12-09 | 中国石油化工股份有限公司 | Metal cleaner and application thereof |
| CN106498419A (en) * | 2016-09-30 | 2017-03-15 | 湖北奥美伦科技有限公司 | Accurate removing agent of a kind of aluminium alloy anode oxide film and preparation method thereof and precision move back membrane process |
| CN106591857A (en) * | 2016-12-20 | 2017-04-26 | 深圳市新合富力科技有限公司 | Aluminum alloy anodizing film removing agent and preparation method and using method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040242449A1 (en) * | 2003-06-02 | 2004-12-02 | Joshi Nayan H. | Nitric acid and chromic acid-free compositions and process for cleaning aluminum and aluminum alloy surfaces |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305855A (en) * | 2013-06-06 | 2013-09-18 | 北京航空航天大学 | Energy-saving and environment-friendly aluminum alloy anode oxide film stripping process |
| CN104498967A (en) * | 2014-12-31 | 2015-04-08 | 苏州禾川化学技术服务有限公司 | Multifunctional aluminum material corrosion-inhibition polishing pickling agent |
| CN105132928A (en) * | 2015-09-08 | 2015-12-09 | 中国石油化工股份有限公司 | Metal cleaner and application thereof |
| CN106498419A (en) * | 2016-09-30 | 2017-03-15 | 湖北奥美伦科技有限公司 | Accurate removing agent of a kind of aluminium alloy anode oxide film and preparation method thereof and precision move back membrane process |
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