CN111454600A - Aqueous treatment fluid integrating antirust agent and pretreatment agent and preparation method thereof - Google Patents
Aqueous treatment fluid integrating antirust agent and pretreatment agent and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/06—Hydroxides
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/10—Salts
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/10—Salts
- C11D7/105—Nitrates; Nitrites
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/10—Salts
- C11D7/12—Carbonates bicarbonates
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/265—Carboxylic acids or salts thereof
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3245—Aminoacids
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/36—Organic compounds containing phosphorus
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Abstract
The invention discloses an aqueous treatment fluid integrating an antirust agent and a pretreatment agent and a preparation method thereof, wherein the aqueous treatment fluid comprises the following components: 5-17% of chelating agent, 0.1-3% of accelerator, 0.05-0.30% of salt aid, 0.03-3% of complexing agent, 0-15% of neutralizer and the balance of water. For the workpiece needing spraying, the original material is treated by the treatment solution, the rust-proof film does not need to be removed in further production, the spraying can be carried out by washing to remove surface dust, and the adhesion between the paint film and the base material is ideal. For workpieces which do not need to be sprayed, the workpiece can be put into use after being treated in the treatment fluid, the service life of metal can be prolonged due to good corrosion resistance, the production process can be simplified, and the production cost and the resource waste are reduced.
Description
Technical Field
The invention belongs to the technical field of metal surface treatment, and particularly relates to an aqueous treatment fluid integrating an antirust agent and a pretreatment agent and a preparation method thereof.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
Before the treatment processes such as coating and the like, metal products need to be subjected to complex processes such as storage, transportation, deep processing and the like, however, the mechanical strength, color, appearance, service life and the like of parts are greatly influenced by the corrosion problem of metal in the production process, the performances such as precision, sensitivity and the like of the products are reduced, the production cost is increased, and the waste of resources is caused. At present, antirust agents are mostly adopted between the storage, transportation and production processes of metal products for treating so as to inhibit the corrosion of moisture, oxygen and the like in the air to base materials, although the antirust agents on the market can mostly meet the requirement of preventing rusting, the antirust time is short, the mechanical strength of the surface is low, the metal substrate is exposed in the air due to the fact that the antirust agents are damaged easily, the surface is corroded, the subsequent coating process is involved, a large amount of manpower and material resources are consumed for cleaning the antirust agents, and the production process and the raw material cost are increased. Therefore, the industrial production urgently needs a water-based antirust agent which can be put into use without removal, does not damage the original color and appearance of the metal, is nontoxic and pollution-free and can be washed by water.
In addition, metal workpieces are usually pretreated after the surface antirust agent is removed to obtain ideal surface properties, so as to improve the corrosion resistance of the workpieces and the adhesion of the workpieces and a paint film. The rough surface of the base material can be obtained after the metal surface is treated by the traditional phosphating solution, the adhesion between a paint film and a base is greatly enhanced, but the existence of metal chromium in the phosphating solution causes great threat to the ecological environment. In addition, metals treated by the phosphating solutions show different colors, for example, the film layers obtained by manganese phosphating are dark black, black and the like, the film layers obtained by zinc phosphating solutions are dark gray, gray and the like, and the film layers obtained by iron phosphating solutions are colored, blue-purple and the like, so that the development and application of the treating solutions in the industry field requiring the original color of the metals are limited. Although the alkaline silane treatment liquid on the market can keep the natural color of metal, the adhesion of a paint film can still not meet the requirement after the workpiece treated by the alkaline silane treatment liquid is sprayed.
In the traditional metal workpiece preparation process, after the workpiece is produced, the workpiece is firstly treated by the antirust agent, and after the workpiece is stored and transported, the antirust agent on the surface is removed according to the specific requirements of the part, and then the workpiece is pretreated. The industrial process needs to have the related process flows of workpiece rust prevention, rust prevention film removal and pretreatment, and the process is relatively complex.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide an aqueous treatment fluid integrating a rust inhibitor and a pretreatment agent and a preparation method thereof.
In order to achieve the above object, one or more embodiments of the present invention disclose the following technical solutions:
in a first aspect, the invention provides an aqueous treatment fluid integrating an antirust agent and a pretreatment agent, which consists of the following components:
5-17% of chelating agent, 0.1-3% of accelerator, 0.05-0.30% of salt aid, 0.03-3% of complexing agent, 0-15% of neutralizer and the balance of water. The chelating agent and the complexing agent adopted by the invention are chelated with each other under the action of the salt assistant and the accelerator, so that effective adsorption groups (such as hydroxyl) between the chelating agent and metal are increased, and a stable, compact and colorless corrosion-resistant coating can be formed on the surface of the substrate.
In a second aspect, there is provided a method for preparing the aqueous treatment solution, comprising the steps of:
mixing the above components uniformly.
In a third aspect, there is provided a method of treating a metal workpiece with the aqueous treatment liquid, comprising the steps of:
carrying out surface treatment on the metal workpiece to remove an oxide film and pollutants on the surface of the metal workpiece;
immersing a workpiece to be treated in the aqueous treatment liquid for a set time;
and taking out the workpiece, washing with water, and drying.
Compared with the prior art, the above one or more embodiments of the present invention achieve the following beneficial effects:
the antirust paint can be washed by water without affecting the performance of an antirust layer, and can be directly sprayed with a paint film without removing after being used as an antirust agent to form a film. The chemical conversion film formed on the surface can resist long-time damp and hot environment, has excellent corrosion resistance and good adhesive force with the paint film.
For the workpiece needing spraying, the original material is treated by the treatment solution, the rust-proof film does not need to be removed in further production, the spraying can be carried out by washing to remove surface dust, and the adhesion between the paint film and the base material is ideal. For workpieces which do not need to be sprayed, the workpiece can be put into use after being treated in the treatment fluid, the service life of metal can be prolonged due to good corrosion resistance, the production process can be simplified, and the production cost and the resource waste are reduced.
The water-based treatment fluid is non-toxic, odorless, safe and non-flammable. Convenient to use, easy operation. Environment-friendly and low waste liquid treatment cost. The film layer is colorless, the original appearance of the metal is kept to the maximum extent, and the application range is wide.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In order to protect the ecological environment, simplify the production process, reduce the unnecessary energy consumption and the waste of natural resources, reduce the natural color of metal to the greatest extent, and improve the corrosion resistance and the paint film adhesive force of metal parts, the water-based treatment solution which is colorless, environment-friendly, strong in binding force with the paint film, excellent in corrosion resistance, simple to operate, and washable and integrates an antirust agent and a pretreatment agent into a whole is provided, the treated parts keep the original color of the metal, the industrial requirement of special requirements on the metal is met, the rust can be prevented for a long time, the transportation and the storage of metal products are convenient, the performance of an antirust layer can be unaffected by washing, and the adhesive force is excellent after the paint film is directly sprayed. The treatment method is simple and easy to implement, and a stable chemical conversion film can be formed at room temperature.
In a first aspect, the invention provides an aqueous treatment fluid integrating an antirust agent and a pretreatment agent, which consists of the following components:
5-17% of chelating agent, 0.1-3% of accelerator, 0.05-0.30% of salt aid, 0.03-3% of complexing agent, 0-15% of neutralizer and the balance of water.
In some embodiments, the aqueous treatment fluid consists of:
7-15% of chelating agent, 0.1-2% of accelerator, 0.08-0.25% of salt aid, 0.05-2.2% of complexing agent, 0-13% of neutralizer and the balance of water.
In some embodiments, the aqueous treatment fluid consists of:
7-13% of chelating agent, 0.12-2% of accelerator, 0.08-0.2% of salt aid, 0.06-2.2% of complexing agent, 0-12% of neutralizer and the balance of water.
Further, the aqueous treatment fluid consists of the following components:
7% of chelating agent, 0.2% of accelerator, 0.18% of salt assistant, 0.07% of complexing agent, 3% of neutralizer and the balance of water.
Further, the aqueous treatment fluid consists of the following components:
10% of chelating agent, 0.9% of accelerator, 0.11% of salt aid, 0.12% of complexing agent, 10% of neutralizer and the balance of water.
Further, the aqueous treatment fluid consists of the following components:
9% of chelating agent, 1.5% of accelerator, 0.09% of salt aid, 0.19% of complexing agent, 9% of neutralizer and the balance of water.
In some embodiments, the chelating agent is at least one of phytic acid, ethanolamine phosphate, alendronic acid, ammonium polyvinyl alcohol phosphate, aminotrimethylene phosphate, hydroxyethylidene diphosphonic acid, aminotrimethylene phosphonic acid, or aminotrimethylene phosphoric acid.
In some embodiments, the accelerator is at least one of ammonium molybdate, sodium sulfate, ammonium borate, sodium gluconate, sodium chlorate, sodium nitrate, sodium bromate, sodium peroxide, nitrobenzene, hydrogen peroxide, sodium tungstate.
In some embodiments, the auxiliary salt is at least one of zinc oxide, magnesium nitrate, calcium nitrate, zinc gluconate, zinc nitrate, zinc sulfate, aluminum nitrate, magnesium sulfate, manganese nitrate, manganese sulfate, lanthanum nitrate, cerium nitrate, zirconium fluoride, fluorozirconic acid, fluorotitanic acid, zirconium nitrate, titanyl sulfate, metatitanic acid, vanadyl oxalate, barium nitrate, barium sulfate.
In some embodiments, the complexing agent is at least one of citric acid, sodium citrate, silane coupling agents KH-560, KH-792, KH-8252, KH-540, KH-550, sodium tartrate, tartaric acid, tetrasodium EDTA, disodium EDTA, and amino tricarboxylic acid.
In some embodiments, the neutralizing agent is at least one of ammonium bicarbonate, ammonium carbonate, sodium carbonate, monoethanolamine, triethanolamine, sodium bicarbonate, diethanolamine, potassium hydroxide, sodium hydroxide, calcium hydroxide, ammonia, boron amine ester;
in some embodiments, the film forming agent further comprises an auxiliary film forming agent, wherein the auxiliary film forming agent is at least one of resin, epoxy resin, acrylic resin, polyurethane, phenolic resin and silicone resin.
In some embodiments, the aqueous treatment fluid consists of:
chelating agent hydroxyethylidene diphosphonic acid 9%, accelerating agent sodium nitrate 1.5%, salt-aid zirconium nitrate 0.09%, complexing agent sodium tartrate 0.19%, neutralizing agent sodium hydroxide 9%, and the balance of water.
In some embodiments, the aqueous treatment has a pH of 5.0 to 6.5.
In a second aspect, there is provided a method for preparing the aqueous treatment solution, comprising the steps of:
mixing the above components uniformly.
In a third aspect, there is provided a method of treating a metal workpiece with the aqueous treatment liquid, comprising the steps of:
carrying out surface treatment on the metal workpiece to remove an oxide film and pollutants on the surface of the metal workpiece;
immersing a workpiece to be treated in the aqueous treatment liquid for a set time;
and taking out the workpiece, washing with water, and drying.
In some embodiments, the workpiece is soaked in the aqueous treatment solution for 2-15 min.
Furthermore, the time for soaking the workpiece in the aqueous treatment solution is 4-6 min.
Example 1
An aqueous treatment fluid integrating an antirust agent and a pretreatment agent, which comprises the following raw materials in percentage by mass:
7 percent of chelating agent alendronic acid, 0.2 percent of accelerator ammonium molybdate, 0.18 percent of salt-assisted calcium nitrate, 0.07 percent of complexing agent citric acid, 3 percent of neutralizer ammonium bicarbonate and the balance of water.
Preparing a treating fluid according to the proportion, adding a trace amount of auxiliary film-forming agent, and adjusting the pH of the solution to be 5, wherein the specific operation steps are as follows:
(1) removing an oxide film and physically adsorbed pollutants on the surface of the metal;
(2) immersing a workpiece to be processed into the processing liquid for 8 minutes;
(3) and taking out the workpiece, washing with water, and airing at room temperature to form a colorless conversion film on the surface.
Example 2
An aqueous treatment fluid integrating an antirust agent and a pretreatment agent, which comprises the following raw materials in percentage by mass:
10% of chelating agent phytic acid, 0.9% of promoter sodium borate, 0.11% of salt-assisted magnesium nitrate, 0.12% of complexing agent amino tricarboxylic acid, 10% of neutralizer sodium bicarbonate and the balance of water.
Preparing a treating fluid according to the proportion, adding a trace amount of auxiliary film-forming agent, and adjusting the pH of the solution to be 7, wherein the specific operation steps are as follows:
(1) removing an oxide film and physically adsorbed pollutants on the surface of the metal;
(2) immersing a workpiece to be processed into the processing liquid for 5 minutes;
(3) and taking out the workpiece, washing with water, and airing at room temperature to form a colorless conversion film on the surface.
Example 3
An aqueous treatment fluid integrating an antirust agent and a pretreatment agent, which comprises the following raw materials in percentage by mass:
chelating agent hydroxyethylidene diphosphonic acid 9%, accelerating agent sodium nitrate 1.5%, salt-aid zirconium nitrate 0.09%, complexing agent sodium tartrate 0.19%, neutralizing agent sodium hydroxide 9%, and the balance of water.
Preparing a treating fluid according to the proportion, adding a trace amount of auxiliary film forming agent, and adjusting the pH value of the solution to 6, wherein the specific operation steps are as follows:
(1) removing an oxide film and physically adsorbed pollutants on the surface of the metal;
(2) immersing a workpiece to be processed into the processing liquid for 14 minutes;
(3) and taking out the workpiece, washing with water, and airing at room temperature to form a colorless conversion film on the surface.
Analysis of results
To confirm the film-forming effect of the aqueous treatment solutions of examples 1 to 3, the following performance tests were performed on examples 1 to 3, and the test results were as follows:
(a) the surface appearance is measured by an eye method: a uniform colorless conversion film is formed on the surface of the metal substrate.
(b) Paint film adhesion experiment:
marking hundreds of grids after plastic spraying: after the metal base materials treated in the examples 1-3 are sprayed with the plastic paint film, the adhesion force reaches the zero-order standard according to the test standard of GB9286-1998 cross-cut method.
Impact after plastic spraying: after the metal substrate treated in examples 1 to 3 was subjected to electrostatic spray molding, the coating was applied at a rate of 90N/cm2The force of (2) to impact. The workpiece after impact has a perfect surface and no radial cracks.
Salt spray experiment after plastic spraying: after the metal base materials treated in the embodiments 1-3 are sprayed with the plastic paint film, the surface is scratched in a cross shape, part of the base is exposed in 5 wt% of salt fog, the base is placed in a salt fog box for 500 hours, and the base is taken out and observed, so that the paint film is firmly combined and does not fall off. No paint film is peeled off even if the paint film is bent at the cross of the scratch.
Salt spray experiment after electrophoresis: after the metal base materials treated in the embodiments 1-3 are subjected to electrophoretic painting, cross shapes are marked on the surfaces, so that part of the base is exposed, and after the metal base materials are placed in a salt spray box for 1000 hours, the paint films are firmly combined without falling off. The paint film is bent at the cross of the scratch, and the paint film does not fall off.
(c) Testing the corrosion resistance degree of the film-formed workpiece by adopting a copper sulfate titration corrosion experiment method: preparing a solution according to the national standard:
41g/L CuSO4·5H2O；
13mL/L 0.1mol/L HCl；
35g/L NaCl。
the metal workpieces treated in the examples 1 to 3 do not turn reddish brown within 70 seconds, which shows that the corrosion resistance test of the treatment liquid exceeds that of the similar products.
(d) Bare membrane saline soak experiment: 3.5 wt% NaCl solution is prepared, the metal base material treated by the treatment solution is soaked in the NaCl solution, and the workpieces treated by the examples 1-3 have no large amount of rusty spots within 120 minutes.
(e) And (3) evaluating the protective performance of the antirust agent on the metal base material under the high-humidity and high-temperature environment for the treated metal material according to a GB/T2631 damp-heat test box: the metal substrates treated in examples 1 to 3 were left in a humid heat test chamber (relative humidity 95%, chamber temperature 49 ℃ C. + -. 1) for 20 days, and had no rust on the surfaces.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An aqueous treatment fluid integrating an antirust agent and a pretreatment agent, which is characterized in that: the composition consists of the following components:
5-17% of chelating agent, 0.1-3% of accelerator, 0.05-0.30% of salt aid, 0.03-3% of complexing agent, 0-15% of neutralizer and the balance of water.
2. The aqueous treatment liquid according to claim 1, characterized in that: the composition consists of the following components:
7-15% of chelating agent, 0.1-2% of accelerator, 0.08-0.25% of salt aid, 0.05-2.2% of complexing agent, 0-13% of neutralizer and the balance of water;
or, the aqueous treatment fluid consists of the following components:
7-13% of chelating agent, 0.12-2% of accelerator, 0.08-0.2% of salt aid, 0.06-2.2% of complexing agent, 0-12% of neutralizer and the balance of water.
3. The aqueous treatment liquid according to claim 2, characterized in that: the aqueous treatment fluid consists of the following components:
7% of chelating agent, 0.2% of accelerator, 0.18% of salt assistant, 0.07% of complexing agent, 3% of neutralizer and the balance of water;
or, the aqueous treatment fluid consists of the following components:
10% of chelating agent, 0.9% of accelerator, 0.11% of salt assistant, 0.12% of complexing agent, 10% of neutralizer and the balance of water;
or, the aqueous treatment fluid consists of the following components:
9% of chelating agent, 1.5% of accelerator, 0.09% of salt aid, 0.19% of complexing agent, 9% of neutralizer and the balance of water.
4. The aqueous treatment liquid according to any one of claims 1 to 3, characterized in that: the chelating agent is at least one of phytic acid, ethanolamine phosphate, alendronic acid, ammonium polyvinyl alcohol phosphate, aminotrimethylene phosphate, hydroxyethylidene diphosphonic acid, aminotrimethylene phosphonic acid or aminotrimethylene phosphate;
or the accelerant is at least one of ammonium molybdate, sodium molybdate, anhydrous sodium sulphate, ammonium borate, sodium gluconate, sodium chlorate, sodium nitrate, sodium bromate, sodium peroxide, nitrobenzene, hydrogen peroxide and sodium tungstate;
or the auxiliary salt is at least one of zinc oxide, magnesium nitrate, calcium nitrate, zinc gluconate, zinc nitrate, zinc sulfate, aluminum nitrate, magnesium sulfate, manganese nitrate, manganese sulfate, lanthanum nitrate, cerium nitrate, zirconium fluoride, zirconium nitrate, fluorozirconic acid, fluotitanic acid, titanyl sulfate, metatitanic acid, vanadyl oxalate, barium nitrate and barium sulfate;
or the complexing agent is at least one of citric acid, sodium citrate, silane coupling agent KH-560, KH-792, KH-8252, KH-540, KH-550, sodium tartrate, tartaric acid, tetrasodium EDTA, disodium EDTA, and amino tricarboxylic acid;
or the neutralizing agent is at least one of ammonium bicarbonate, ammonium carbonate, sodium carbonate, monoethanolamine, triethanolamine, sodium bicarbonate, diethanolamine, potassium hydroxide, sodium hydroxide, calcium hydroxide, ammonia water and boron amine ester;
or, the composite material further comprises an auxiliary film forming agent, wherein the auxiliary film forming agent is at least one of resin, epoxy resin, acrylic resin, polyurethane, phenolic resin and silicon resin.
5. The aqueous treatment liquid according to claim 1, characterized in that: the aqueous treatment fluid consists of the following components:
9% of hydroxyethylidene diphosphonic acid, 1.5% of sodium nitrate, 0.09% of zirconium nitrate, 0.19% of sodium tartrate, 9% of sodium hydroxide and the balance of water.
6. The aqueous treatment liquid according to claim 1, characterized in that: the pH value of the aqueous treating agent is 5.0-6.5.
7. A method for producing the aqueous treatment liquid according to any one of claims 1 to 6, characterized by: the method comprises the following steps:
mixing the above components uniformly.
8. A method for treating a metal workpiece with the aqueous treatment liquid according to any one of claims 1 to 6, characterized by: the method comprises the following steps:
carrying out surface treatment on the metal workpiece to remove an oxide film and pollutants on the surface of the metal workpiece;
immersing a workpiece to be treated in the aqueous treatment liquid for a set time;
and taking out the workpiece, washing with water, and drying.
9. A method of treating a metal workpiece according to claim 8, characterized in that: the time for soaking the workpiece in the aqueous treatment solution is 2-15 min.
10. A method of treating a metal workpiece according to claim 9, characterized in that: the time for soaking the workpiece in the aqueous treatment solution is 4-6 min.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480814A (en) * | 2020-11-26 | 2021-03-12 | 汪元亮 | Surface treating agent and surface protection method for porous loose material |
| CN113373434A (en) * | 2021-04-15 | 2021-09-10 | 企朔（上海）新材料科技有限公司 | Preparation method of water-based antirust agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112480814A (en) * | 2020-11-26 | 2021-03-12 | 汪元亮 | Surface treating agent and surface protection method for porous loose material |
| CN112480814B (en) * | 2020-11-26 | 2022-07-26 | 汪元亮 | Surface treating agent and surface protection method for porous loose material |
| CN113373434A (en) * | 2021-04-15 | 2021-09-10 | 企朔（上海）新材料科技有限公司 | Preparation method of water-based antirust agent |
| CN113502075A (en) * | 2021-07-28 | 2021-10-15 | 安徽大学绿色产业创新研究院 | Preparation method of environment-friendly metal pretreatment liquid capable of self-adsorption and rapid film formation |
| CN114231988A (en) * | 2021-11-22 | 2022-03-25 | 武汉理工大学 | Antirust agent for water sand blasting rust removal of railway vehicles and preparation method and application thereof |
| CN114592196A (en) * | 2022-03-14 | 2022-06-07 | 潍坊佳钢贸易有限公司 | Environment-friendly neutral rust remover and preparation method thereof |
| CN114836741A (en) * | 2022-04-12 | 2022-08-02 | 山东大学 | Steel substrate surface film forming solution based on organic-inorganic chelating compounding and preparation and application thereof |
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