CN113278980A - Novel environment-friendly aluminum alloy dedusting agent and preparation method thereof - Google Patents
Novel environment-friendly aluminum alloy dedusting agent and preparation method thereof Download PDFInfo
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- CN113278980A CN113278980A CN202110530529.4A CN202110530529A CN113278980A CN 113278980 A CN113278980 A CN 113278980A CN 202110530529 A CN202110530529 A CN 202110530529A CN 113278980 A CN113278980 A CN 113278980A
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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
- C23G1/065—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors sulfur-containing compounds
-
- 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
- C23G1/068—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors compounds containing a C=C bond
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a novel environment-friendly aluminum alloy dedusting agent and a preparation method thereof, wherein the dedusting agent comprises the following components in parts by weight: 5-15 g/L of organic peroxide, 1-3 g/L of organic acid complexing agent, 0.2-0.5 g/L of organic corrosion inhibitor, 2-3 g/L of pH buffering agent and 0.2-0.3 g/L of surfactant. The novel environment-friendly aluminum alloy dedusting agent and the dedusting agent prepared by the preparation method are used for removing hanging on the surface after aluminum alloy alkali corrosion and chemical polishing, are high in dedusting speed, free of over-corrosion, free of metal salt, phosphorus, fluorine and benzene, good in environmental protection performance, free of toxic and harmful gas in the dedusting process, environment-friendly and beneficial to protecting the health of operators.
Description
Technical Field
The invention relates to the technical field of aluminum alloy surface treatment, in particular to a novel environment-friendly aluminum alloy dedusting agent and a preparation method thereof.
Background
After the aluminum alloy is corroded by acid and alkali, because the corrosion rates of various components in the aluminum alloy in the acid and the alkali are different, the dissolution rates are different, the aluminum is very active metal and is dissolved fast, and the dissolution rates of copper, zinc, magnesium, silicon, iron and the like are slow, so other components are enriched and remained on the surface of the aluminum alloy, and black, black gray and gray brown are caused.
At present, the ash removal process used in China mainly comprises the following steps:
(1) 3-5% of chromic acid, 3-5% of nitric acid and 3-5% of sulfuric acid:
chromic acid contains highly toxic hexavalent chromium heavy metal ions, great risks exist in storage and use, the sewage treatment cost is high, nitric acid and sulfuric acid need to be added, the sewage treatment cost of ammonia nitrogen treatment is further increased due to the addition of the nitric acid, and the nitric acid volatilizes when in use, so that the air environment of a production workshop is polluted, and the body health of workers in the workshop is affected. At present, nitric acid is listed as a high-risk product easy to explode in China, sulfuric acid is listed as a product easy to prepare poison, enterprises apply for purchase, store and use nitric acid and sulfuric acid, and have multiple procedures, and special staff needs to be configured for applying for purchase, storage and use, so that the labor cost for use is increased.
(2) 20-30% nitric acid + 20-30% sulfuric acid:
a large amount of nitric acid and sulfuric acid are used, and the volatilization of the nitric acid causes severe workshop production environment and seriously affects the body health of workshop production staff. The discharge of rinsing bath nitric acid leads to the ammonia nitrogen treatment cost very high, and at present the country lists nitric acid as the high-risk product that easily explodes, and sulphuric acid is listed as the product of easily making poison, and enterprise's application is bought, keeps and uses nitric acid and sulphuric acid process numerous, need dispose the professional and apply for purchase, keeps and uses to increase and use the cost of labor, thereby increase and use cost of labor
(3) Chromium-free ammonia nitrogen-free dedusting agent
Because of the high toxicity of hexavalent chromium, environmental air pollution caused by nitric acid use and high ammonia nitrogen cost in sewage treatment, a chromium-free ammonia nitrogen-free environment-friendly ash remover is a hotspot of research in recent years, CN109518200 uses high-valence iron salt as an oxidant, but the high-valence iron salt is red yellow, the sewage treatment needs to convert the red yellow into colorless, the required cost is high, CN1252320 selects benzene sulfonic acid substances as the oxidant, the benzene sulfonic acid substances contain benzene, the benzene substances have strong harm to blood, nerve and reproductive systems of human bodies, and the benzene substances are difficult to degrade, so that the wastewater treatment is difficult.
Disclosure of Invention
The invention aims to provide a novel environment-friendly aluminum alloy dedusting agent and a preparation method thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the novel environment-friendly aluminum alloy dedusting agent comprises the following components in parts by weight: 5-15 g/L of organic peroxide, 1-3 g/L of organic acid complexing agent, 0.2-0.5 g/L of organic corrosion inhibitor, 2-3 g/L of pH buffering agent and 0.2-0.3 g/L of surfactant.
Further, the organic peroxide includes, but is not limited to, one or more of the following: azelaic acid diperoxide, 2-dihydropropane peroxide, 2-bis- (4, 4-di-tert-butylperoxycyclohexyl) propane, 1-bis- (tert-butylperoxy) -3, 5-trimethylcyclohexane, 2, 5-dimethyl-2, 5-bis- (peroxy-3, 5, 5-trimethylhexanoyl) hexane, p-menthane hydroperoxide, 2, 5-dimethyl-2, 5-bis- (tert-butylperoxy) -3-hexyne, methylcyclohexanone peroxide, acetylacetone peroxide, diacetone alcohol peroxide, di (iso) nonanoyl peroxide, di (acetyl) peroxide, and di (iso) butanoyl peroxide.
Further, the organic acid complexing agent includes, but is not limited to, one or more of the following substances: citric acid, tartaric acid, malic acid, maleic acid, malic acid, lactic acid, ethylenediaminetetraacetic acid, polyacrylic acid, heptonic acid, alginic acid, maleic acid acrylic acid copolymer.
Further, the corrosion inhibitor includes, but is not limited to, one or more of the following thiol corrosion inhibitors and alkynol corrosion inhibitors: ethanethiol, ethanedithiol, 1-propanethiol, 1, 3-propanedithiol, propargyl alcohol, 1, 4-butynediol, 1, 5-enynediol.
Further, the PH corrosion inhibitor includes, but is not limited to, one or more of the following: sodium acetate, sodium sulfate, sodium borate, sodium citrate, sodium tartrate, sodium lactate and sodium malate.
Further, the surfactant includes but is not limited to one or more of the following sulfate ester salts anionic surfactants: alkyl sodium sulfate, fatty alcohol-polyoxyethylene ether sodium sulfate, glycerin fatty acid ester sodium sulfate, sulfated sodium ricinoleate, naphthenic sodium sulfate and fatty amide alkyl sodium sulfate.
A preparation method of a novel environment-friendly aluminum alloy dedusting agent comprises the following specific steps: adding pure water into a reaction kettle, adding organic peroxide into the reaction kettle, stirring until the organic peroxide is uniformly mixed, cooling to room temperature, adding an organic acid complexing agent, an organic corrosion inhibitor, a pH buffering agent and a surfactant into the reaction kettle, stirring until the organic acid complexing agent, the organic corrosion inhibitor, the pH buffering agent and the surfactant are uniformly mixed, and finally adding water to a constant volume and uniformly mixing.
Further, adding organic peroxide, and then stirring for 8-10 minutes at a stirring speed of 80-100 revolutions per minute.
Further, after the organic acid complexing agent, the corrosion inhibitor, the PH buffering agent and the surfactant are added, the stirring time is 10-20 minutes, and the stirring speed is 80-100 revolutions per minute.
Compared with the prior art, the invention has the beneficial effects that:
1. the novel environment-friendly aluminum alloy dedusting agent comprises organic peroxide, organic acid complexing agent, ammonia nitrogen-free corrosion inhibitor, ammonia nitrogen-free PH buffering agent and ammonia nitrogen-free surfactant, wherein the organic peroxide can quickly convert the metal remained on the surface into metal ions which are easy to dissolve in water, the organic acid complexing agent is used for dissolving and complexing the metal ions, the service life of the dedusting agent is prolonged while the aim of quickly dedusting is fulfilled, so that the production cost is further reduced, the ammonia nitrogen-free corrosion inhibitor is selected to prevent the organic peroxide and the organic acid from over-corroding aluminum, the pH value of the solution is stabilized by the ammonia nitrogen-free PH buffering agent, the stability and the service life of the solution are improved, the sulfate salt surfactant assists the organic corrosion inhibitor to form a film on the surface of the aluminum, the corrosion inhibition performance of the organic corrosion inhibitor is improved, and the ash is assisted to be separated from the surface of the aluminum alloy, keeping the surface of the aluminum alloy clean.
2. The deashing method disclosed by the invention does not contain heavy metal chromium and other harmful heavy metals, does not need to add nitric acid and sulfuric acid, does not contain ammonia nitrogen, fluorine and phosphorus, does not contain benzene, has good environmental protection performance, does not generate toxic and harmful gas in the deashing process, is environment-friendly, effectively improves the working environment of a workshop, protects the health of operators, has a simple wastewater treatment process and low sewage treatment cost, saves the complicated procedures of purchasing virulent chromic anhydride, easily-exploded nitric acid and easily-produced virulent sulfuric acid, and improves the working efficiency.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
(2) The preparation method comprises the following steps: adding half of the required water, wherein the conductivity of the water is not more than 100 mu S/m, then adding diperoxyazelaic acid, stirring for 8-10 minutes at the stirring speed of 80-100 revolutions per minute, adding citric acid, ethanethiol, sodium borate and sodium alkyl sulfate, stirring for 10-20 minutes at the stirring speed of 80-100 revolutions per minute.
Example 2
(2) The preparation method comprises the following steps: adding half of the required water, wherein the electric conductivity of the water is not more than 100 mu S/m, then adding the diperoxyazelaic acid, stirring for 8-10 minutes at the stirring speed of 80-100 revolutions per minute, adding the 2, 2-dihydropropane peroxide, the tartaric acid, the ethanedithiol, the sodium acetate and the fatty alcohol-polyoxyethylene ether sodium sulfate, stirring for 10-20 minutes at the stirring speed of 80-100 revolutions per minute.
Example 3
(2) The preparation method comprises the following steps: adding half of the required water, wherein the conductivity of the water is not more than 100 mu S/m, then adding diperoxyazelaic acid, stirring for 8-10 minutes at the stirring speed of 80-100 revolutions per minute, and adding 2, 2-bis- (4, 4-di-tert-butylperoxycyclohexyl) propane, malic acid, 1-propanethiol, sodium sulfate and glycerin fatty acid ester sodium sulfate, stirring for 10-20 minutes at the stirring speed of 80-100 revolutions per minute.
Example 4
(2) The preparation method comprises the following steps: adding half of the required water, wherein the conductivity of the water is not more than 100 mu S/m, then adding the diperoxyazelaic acid, stirring for 8-10 minutes at the stirring speed of 80-100 revolutions per minute, adding the maleic acrylic acid copolymer, the 1, 3-propanedithiol, the sodium carbonate and the sulfated sodium ricinoleate, stirring for 10-20 minutes at the stirring speed of 80-100 revolutions per minute.
Example 5
(2) The preparation method comprises the following steps: adding half of the required water, wherein the electric conductivity of the water is not more than 100 mu S/m, then adding the diperoxyazelaic acid, stirring for 8-10 minutes at the stirring speed of 80-100 revolutions per minute, adding the acetylacetone peroxide, the malic acid, the propargyl alcohol, the sodium borate and the sodium cyclamate, stirring for 10-20 minutes at the stirring speed of 80-100 revolutions per minute.
Example 6
(2) The preparation method comprises the following steps: adding half of the required water, wherein the electric conductivity of the water is not more than 100 mu S/m, then adding diperoxyazelaic acid, stirring for 8-10 minutes at the stirring speed of 80-100 revolutions per minute, adding peroxidation (di) isononanoyl, gluconic acid, 1, 4-butynediol, sodium tartrate and fatty alcohol-polyoxyethylene ether sodium sulfate, stirring for 10-20 minutes at the stirring speed of 80-100 revolutions per minute.
Example 7
(2) The preparation method comprises the following steps: adding half of the required water, wherein the electric conductivity of the water is not more than 100 mu S/m, then adding diperoxyazelaic acid, stirring for 8-10 minutes at the stirring speed of 80-100 revolutions per minute, and after adding diperoxyazelaic acid, 2-dihydropropane peroxide, alginic acid, 1, 5-eneynol, sodium citrate and sodium alkyl sulfate, stirring for 10-20 minutes at the stirring speed of 80-100 revolutions per minute.
Example 8
(2) The preparation method comprises the following steps: adding half of the required water, wherein the electric conductivity of the water is not more than 100 mu S/m, then adding diperoxyazelaic acid, stirring for 8-10 minutes at the stirring speed of 80-100 revolutions per minute, adding acetylacetone peroxide, di (di) isononanoyl peroxide, polyacrylic acid, 1, 5-eneynol, sodium citrate and sodium alkyl sulfate, stirring for 10-20 minutes at the stirring speed of 80-100 revolutions per minute.
Comparative example 1
Nitric acid (98%) 250 g/l
Sulfuric acid (98%) 250 g/l
Temperature room temperature
Comparative example 2
Testing
1. Preparation of test piece for removing ash
(1) Materials: test pieces of 6063 and 6463, having a specification of 70mm 140mm 2mm,
(2) two-acid polishing hanging ash
(3) Alkali corrosion hanging ash
2. Test methods and results
(1) Test method
The acid corrosion ash hanging test piece and the alkali corrosion ash hanging test piece are soaked by the ash removing agent of the embodiment,
the time to ash removal was visually observed and recorded, and the test results were as follows:
(2) test results
| Two acid polishing ash removal time (seconds) | Alkali corrosion plaster removal time (seconds) | |
| Example 1 | 22 | 11 |
| Example 2 | 23 | 12 |
| Example 3 | 25 | 13 |
| Example 4 | 20 | 12 |
| Example 5 | 21 | 11 |
| Example 6 | 23 | 12 |
| Example 7 | 17 | 8 |
| Example 8 | 18 | 8 |
| Comparative example 1 | 60 | 35 |
| Comparative example 2 | 33 | 20 |
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (9)
1. The novel environment-friendly aluminum alloy dedusting agent is characterized in that: the ash remover comprises the following components in parts by weight: 5-15 g/L of organic peroxide, 1-3 g/L of organic acid complexing agent, 0.2-0.5 g/L of organic corrosion inhibitor, 2-3 g/L of pH buffering agent and 0.2-0.3 g/L of surfactant.
2. The novel environment-friendly aluminum alloy deashing agent as claimed in claim 1, wherein: the organic peroxides include, but are not limited to, one or more of the following: azelaic acid diperoxide, 2-dihydropropane peroxide, 2-bis- (4, 4-di-tert-butylperoxycyclohexyl) propane, 1-bis- (tert-butylperoxy) -3, 5-trimethylcyclohexane, 2, 5-dimethyl-2, 5-bis- (peroxy-3, 5, 5-trimethylhexanoyl) hexane, p-menthane hydroperoxide, 2, 5-dimethyl-2, 5-bis- (tert-butylperoxy) -3-hexyne, methylcyclohexanone peroxide, acetylacetone peroxide, diacetone alcohol peroxide, di (iso) nonanoyl peroxide, di (acetyl) peroxide, and di (iso) butanoyl peroxide.
3. The novel environment-friendly aluminum alloy deashing agent as claimed in claim 1, wherein: the organic acid complexing agent includes, but is not limited to, one or more of the following: citric acid, tartaric acid, malic acid, maleic acid, malic acid, lactic acid, ethylenediaminetetraacetic acid, polyacrylic acid, heptonic acid, alginic acid, maleic acid acrylic acid copolymer.
4. The novel environment-friendly aluminum alloy deashing agent as claimed in claim 1, wherein: the corrosion inhibitor includes but is not limited to one or more of the following thiol corrosion inhibitors and alkynol corrosion inhibitors: ethanethiol, ethanedithiol, 1-propanethiol, 1, 3-propanedithiol, propargyl alcohol, 1, 4-butynediol, 1, 5-enynediol.
5. The novel environment-friendly aluminum alloy deashing agent as claimed in claim 1, wherein: the PH buffer includes, but is not limited to, one or more of the following: sodium acetate, sodium sulfate, sodium borate, sodium citrate, sodium tartrate, sodium lactate and sodium malate.
6. The novel environment-friendly aluminum alloy deashing agent as claimed in claim 1, wherein: the surfactant includes but is not limited to one or more of the following sulfate ester salts anionic surfactants: alkyl sodium sulfate, fatty alcohol-polyoxyethylene ether sodium sulfate, glycerin fatty acid ester sodium sulfate, sulfated sodium ricinoleate, naphthenic sodium sulfate and fatty amide alkyl sodium sulfate.
7. The preparation method of the novel environment-friendly aluminum alloy dedusting agent is characterized by comprising the following specific steps: adding pure water into a reaction kettle, adding organic peroxide into the reaction kettle, stirring until the organic peroxide is uniformly mixed, cooling to room temperature, adding an organic acid complexing agent, an organic corrosion inhibitor, a pH buffering agent and a surfactant into the reaction kettle, stirring until the organic acid complexing agent, the organic corrosion inhibitor, the pH buffering agent and the surfactant are uniformly mixed, and finally adding water to a constant volume and uniformly mixing.
8. The preparation method of the novel environment-friendly aluminum alloy deashing agent as claimed in claim 7, characterized in that: adding organic peroxide, and stirring for 8-10 min at 80-100 rpm.
9. The preparation method of the novel environment-friendly aluminum alloy deashing agent as claimed in claim 7, characterized in that: after the organic acid complexing agent, the organic complexing agent, the corrosion inhibitor, the PH buffering agent and the surfactant are added, the stirring time is 10 to 20 minutes, and the stirring speed is 80 to 100 revolutions per minute.
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Cited By (2)
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| CN114000155A (en) * | 2021-09-26 | 2022-02-01 | 西北大学 | Universal aluminum and aluminum alloy environment-friendly dedusting agent |
| CN114672812A (en) * | 2022-04-19 | 2022-06-28 | 沈阳永清环保科技有限公司 | Environment-friendly metal surface dust-removing finishing agent and preparation method thereof |
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Application publication date: 20210820 |
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