CN112647069A - Environment-friendly titanium lanthanum film forming agent, aluminum material and surface film forming treatment method thereof - Google Patents
Environment-friendly titanium lanthanum film forming agent, aluminum material and surface film forming treatment method thereof Download PDFInfo
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- CN112647069A CN112647069A CN202011475948.4A CN202011475948A CN112647069A CN 112647069 A CN112647069 A CN 112647069A CN 202011475948 A CN202011475948 A CN 202011475948A CN 112647069 A CN112647069 A CN 112647069A
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- film forming
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- environment
- forming agent
- aluminum material
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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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
Abstract
The invention relates to an environment-friendly titanium lanthanum film forming agent, an aluminum material and a surface film forming treatment method thereof. The environment-friendly titanium lanthanum film forming agent is used for surface pretreatment of aluminum materials and comprises the following components in parts by weight in 1000 parts: 5-50 parts of p-tert-butyl phenolic resin, 2-20 parts of fluotitanic acid, 2-10 parts of hydrofluoric acid, 2-10 parts of lanthanum sulfate and the balance of water. The film formed by the environment-friendly titanium lanthanum film forming agent has good corrosion resistance, good adhesive force when being used as a coating treatment bottom layer, can be used in a soaking and spraying mode when being used for treating aluminum products, is very convenient to use, does not contain chromium ions and other heavy metals which damage the environment, and is a green, energy-saving and environment-friendly product.
Description
Technical Field
The invention relates to the technical field of metal surface treatment, in particular to an environment-friendly titanium lanthanum film forming agent, an aluminum material and a surface film treatment method thereof.
Background
In order to improve the surface properties or appearance of the product, the surface of the workpiece is usually treated. For example, surface treatment processes for aluminum, iron, and alloys thereof are in great variety of industries. Furthermore, most of the works require pretreatment, such as cleaning, degreasing, and desmearing, before surface treatment, and some of the aluminum materials require surface coating.
The filming treatment generally adopts a filming agent to pretreat the aluminum material so as to form a film layer on the surface of the aluminum material, so that the subsequent surface treatment is carried out, and the bonding force and the corrosion resistance of the subsequent film are increased. The traditional skin is generally treated by the skin containing chromium ions, and the environmental protection requirement and the process requirement of some merchants cannot be met.
Disclosure of Invention
In view of the above, an environment-friendly titanium lanthanum film forming agent with good corrosion resistance and strong binding force, a film coating method for the surface of an aluminum material and the aluminum material prepared by the film coating method are provided, and the film coating agent is environment-friendly, non-toxic and simple in process.
An environment-friendly titanium lanthanum film forming agent is used for surface pretreatment of aluminum materials and comprises the following components in parts by weight in 1000 parts: 5-50 parts of p-tert-butyl phenolic resin, 2-20 parts of fluotitanic acid, 2-10 parts of hydrofluoric acid, 2-10 parts of lanthanum sulfate and the balance of water.
Preferably, the weight portion of the para-tert-butyl phenolic resin is 10-30 portions.
Preferably, the fluorotitanic acid is 5-10 parts by weight.
Preferably, the weight part of the hydrofluoric acid is 2-6 parts.
Preferably, the weight part of the lanthanum sulfate is 2-6 parts.
Preferably, the use ratio of the coating agent is 0.5-2 wt%.
Preferably, the pH value of the coating agent is 2-5.
A method for processing the surface of an aluminum material into a film comprises the following steps: preparing the environment-friendly titanium lanthanum film forming agent; preparing an environment-friendly titanium lanthanum film forming agent into a film solution with the mass percentage of 0.5-2%; controlling the pH value of the coating agent solution to be 2-5; and soaking or spraying the film solution on the surface of the aluminum material, and drying.
And an aluminum material having a surface film formed by the aluminum material surface film forming method.
The film formed by the environment-friendly titanium lanthanum film forming agent has good corrosion resistance and strong adhesive force, can be used as a coating treatment bottom layer, can be sprayed and soaked when used for treating aluminum products, does not need to be washed, greatly saves water, avoids inconvenience caused by water, is very convenient to use, does not contain chromium ions and other heavy metals which damage the environment, and is an environment-friendly, energy-saving and environment-friendly product.
Detailed Description
The present invention will be described in detail with reference to specific examples.
The embodiment of the invention provides an environment-friendly titanium lanthanum film forming agent for surface pretreatment of aluminum materials, which comprises the following components in parts by weight in 1000 parts by weight: 5-50 parts of p-tert-butyl phenolic resin, 2-20 parts of fluotitanic acid, 2-10 parts of hydrofluoric acid, 2-10 parts of lanthanum sulfate and the balance of water.
Specifically, the weight part of the para-tert-butylphenol resin is preferably 10 to 30 parts. The weight part of the fluotitanic acid is preferably 5-10 parts. The weight portion of the hydrofluoric acid is preferably 2-6 portions. The weight portion of the lanthanum sulfate is preferably 2-6 portions. The proportion of the coating agent is 0.5-2 wt%, and the PH value is preferably 2-5, and the coating agent is weakly acidic.
In the environment-friendly titanium lanthanum film forming agent, the better film forming effect is achieved by controlling the proportion balance of the components. For example, para-tert-butyl phenolic resin and fluotitanic acid are used as main components of a film layer, lanthanum sulfate is formed into a film, the corrosion resistance of an aluminum piece is greatly improved, and hydrofluoric acid promotes the generation of the film.
The embodiment of the invention also provides a method for processing the surface of the aluminum material into a film, which comprises the following steps: preparing the environment-friendly titanium lanthanum film forming agent; preparing an environment-friendly titanium lanthanum film forming agent into a film solution with the mass percentage of 0.5-2%; controlling the pH value of the coating agent solution to be 2-5; and soaking or spraying the film solution on the surface of the aluminum material, and drying.
Specifically, the mass percentage of the coating agent in the coating agent solution is preferably 0.5-2%, and the coating agent is sprayed or applied to the surface of the aluminum material during treatment, or an extrusion mode can be adopted. The treatment temperature is normal temperature, such as 20-25 deg.C. After the film is formed, the surface of the aluminum material is further subjected to passivation, oxidation resistance, or coating treatment. The drying temperature is controlled to be about 120 ℃, which is not too high, and the film layer is prevented from cracking.
An embodiment of the present invention also provides an aluminum material treated by the aluminum material surface film formation treatment method as described above, and a film is formed on the surface of the aluminum material. The film can protect the aluminum material and can be used as a coating treatment bottom layer for subsequent coating treatment and the like.
The environment-friendly type ti-la film forming agent and the processing method thereof according to the embodiment of the invention are described by specific examples.
Example 1
Mixing the following components in parts by weight: by 1000 parts by weight, 5 parts of p-tert-butylphenol resin, 2 parts of fluotitanic acid, 2 parts of hydrofluoric acid, 2 parts of lanthanum sulfate and the balance of water are stirred and uniformly mixed to prepare the coating agent.
The treatment method comprises the following steps: preparing an environment-friendly titanium lanthanum film forming agent; preparing an environment-friendly titanium lanthanum film forming agent into a film solution with the mass percentage of 2%; controlling the pH value of the coating agent solution to be 3; at normal temperature, soaking the aluminum material in the solution for 2 minutes, cleaning the aluminum material with clear water, taking the aluminum material out, placing the aluminum material under a fan, draining the aluminum material, and drying the aluminum material at 120 ℃.
After the treatment of the coating agent solution, the corrosion resistance of a workpiece is greatly improved, the neutral salt spray test is more than 48 hours, the workpiece is boiled in water for 2 hours after the paint coating, then the hundred-lattice test is carried out, the lattice dropping phenomenon is avoided, and the adhesive force is 0 grade.
Example 2
Mixing the following components in parts by weight: the coating agent is prepared by stirring and uniformly mixing 1000 parts by weight of 20 parts of p-tert-butylphenol resin, 5 parts of fluotitanic acid, 4 parts of hydrofluoric acid, 4 parts of lanthanum sulfate and the balance of water.
The treatment method comprises the following steps: preparing an environment-friendly titanium lanthanum film forming agent; preparing an environment-friendly titanium lanthanum film forming agent into a film solution with the mass percentage of 1.5%; controlling the pH value of the coating agent solution to be 3; at normal temperature, soaking the aluminum material in the solution for 2 minutes, cleaning the aluminum material with clear water, taking the aluminum material out, placing the aluminum material under a fan, draining the aluminum material, and drying the aluminum material at 120 ℃.
After the treatment of the coating agent solution, the corrosion resistance of a workpiece is greatly improved, the neutral salt spray test is more than 48 hours, the workpiece is boiled in water for 2 hours after the paint coating, then the hundred-lattice test is carried out, the lattice dropping phenomenon is avoided, and the adhesive force is 0 grade.
Example 3
Mixing the following components in parts by weight: by 1000 parts by weight, 35 parts of p-tert-butylphenol resin, 5 parts of fluotitanic acid, 6 parts of hydrofluoric acid, 6 parts of lanthanum sulfate and the balance of water are stirred and uniformly mixed to prepare the coating agent.
The treatment method comprises the following steps: preparing an environment-friendly titanium lanthanum film forming agent; preparing an environment-friendly titanium lanthanum film forming agent into a film solution with the mass percentage of 1%; controlling the pH value of the coating agent solution to be 3; at normal temperature, soaking the aluminum material in the solution for 2 minutes, cleaning the aluminum material with clear water, taking the aluminum material out, placing the aluminum material under a fan, draining the aluminum material, and drying the aluminum material at 120 ℃.
After the treatment of the coating agent solution, the corrosion resistance of a workpiece is greatly improved, the neutral salt spray test is more than 48 hours, the workpiece is boiled in water for 2 hours after the paint coating, then the hundred-lattice test is carried out, the lattice dropping phenomenon is avoided, and the adhesive force is 0 grade.
Example 4
Mixing the following components in parts by weight: by 1000 parts by weight, 50 parts of p-tert-butylphenol resin, 10 parts of fluotitanic acid, 6 parts of hydrofluoric acid, 6 parts of lanthanum sulfate and the balance of water are stirred and uniformly mixed to prepare the coating agent.
The treatment method comprises the following steps: preparing an environment-friendly titanium lanthanum film forming agent; preparing an environment-friendly titanium lanthanum film forming agent into a film solution with the mass percentage of 0.5%; controlling the pH value of the coating agent solution to be 3; at normal temperature, soaking the aluminum material in the solution for 2 minutes, cleaning the aluminum material with clear water, taking the aluminum material out, placing the aluminum material under a fan, draining the aluminum material, and drying the aluminum material at 120 ℃.
After the treatment of the coating agent solution, the corrosion resistance of a workpiece is greatly improved, the neutral salt spray test is more than 48 hours, the workpiece is boiled in water for 2 hours after the paint coating, then the hundred-lattice test is carried out, the lattice dropping phenomenon is avoided, and the adhesive force is 0 grade.
It should be noted that the present invention is not limited to the above-mentioned embodiments, and other changes and modifications can be made by those skilled in the art according to the spirit of the present invention, and these changes and modifications made according to the spirit of the present invention should be included in the scope of the present invention as claimed.
Claims (10)
1. An environment-friendly titanium lanthanum film forming agent is used for surface pretreatment of aluminum materials and is characterized by comprising the following components in parts by weight in 1000 parts by weight: 5-50 parts of p-tert-butyl phenolic resin, 2-20 parts of fluotitanic acid, 2-10 parts of hydrofluoric acid, 2-10 parts of lanthanum sulfate and the balance of water.
2. The environment-friendly TiLa film-forming agent of claim 1, wherein the weight portion of the p-tert-butylphenol resin is 10-30.
3. The environment-friendly titanium lanthanum film forming agent according to claim 1, wherein the weight portion of the fluotitanic acid is 5-10.
4. The environment-friendly titanium lanthanum film forming agent of claim 1, wherein the hydrofluoric acid is 2-6 parts by weight.
5. The environment-friendly titanium lanthanum film forming agent of claim 1, wherein the lanthanum sulfate is 2-6 parts by weight.
6. The environment-friendly titanium lanthanum film forming agent as claimed in claim 1, wherein the usage proportion of the film forming agent is 0.5-2 wt%.
7. The environment-friendly titanium lanthanum film forming agent of claim 1, wherein the PH of the film forming agent is 2-5.
8. A method for processing the surface of an aluminum material into a film comprises the following steps: preparing the environment-friendly titanium lanthanum film forming agent as defined in any one of claims 1-7; preparing an environment-friendly titanium lanthanum film forming agent into a film solution with the mass percentage of 0.5-2%; controlling the pH value of the coating agent solution to be 2-5; soaking the surface of the aluminum material, spraying a film solution, draining as soon as possible and then drying.
9. An aluminum material characterized in that a coating film is formed on the surface of the aluminum material by the aluminum material surface coating treatment method according to claim 8.
10. An aluminum material as defined in claim 9 wherein after the coating film is formed, the surface of the aluminum material is further subjected to a passivation, oxidation resistance or coating treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011475948.4A CN112647069A (en) | 2020-12-14 | 2020-12-14 | Environment-friendly titanium lanthanum film forming agent, aluminum material and surface film forming treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011475948.4A CN112647069A (en) | 2020-12-14 | 2020-12-14 | Environment-friendly titanium lanthanum film forming agent, aluminum material and surface film forming treatment method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112647069A true CN112647069A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011475948.4A Withdrawn CN112647069A (en) | 2020-12-14 | 2020-12-14 | Environment-friendly titanium lanthanum film forming agent, aluminum material and surface film forming treatment method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN112647069A (en) |
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2020
- 2020-12-14 CN CN202011475948.4A patent/CN112647069A/en not_active Withdrawn
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Application publication date: 20210413 |