CN112708879A - Tungsten-containing environment-friendly coating agent, aluminum material and surface coating treatment method thereof - Google Patents

Tungsten-containing environment-friendly coating agent, aluminum material and surface coating treatment method thereof Download PDF

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Publication number
CN112708879A
CN112708879A CN202011474563.6A CN202011474563A CN112708879A CN 112708879 A CN112708879 A CN 112708879A CN 202011474563 A CN202011474563 A CN 202011474563A CN 112708879 A CN112708879 A CN 112708879A
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China
Prior art keywords
coating agent
parts
environment
friendly
aluminum material
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Withdrawn
Application number
CN202011474563.6A
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Chinese (zh)
Inventor
方招娣
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Shenzhen Mayor Hongtai Technology Co ltd
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Shenzhen Mayor Hongtai Technology Co ltd
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Priority to CN202011474563.6A priority Critical patent/CN112708879A/en
Publication of CN112708879A publication Critical patent/CN112708879A/en
Withdrawn legal-status Critical Current

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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
    • C23C22/40—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 molybdates, tungstates or vanadates
    • C23C22/44—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 molybdates, tungstates or vanadates containing also fluorides or complex fluorides
    • 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
    • C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
    • C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
    • C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention relates to an environment-friendly coating agent containing tungsten, an aluminum material and a surface coating treatment method thereof. The tungsten-containing environment-friendly coating 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 potassium permanganate, 2-10 parts of hydrofluoric acid, 2-10 parts of sodium tungstate and the balance of water. The film formed by the environment-friendly coating agent containing tungsten has good corrosion resistance and strong adhesive force, and is particularly suitable for being used as a coating treatment bottom layer. When the coating agent is applied to treating aluminum materials, the coating agent can be used in a soaking and spraying mode, water washing is not needed, water is saved, inconvenience caused by water use is avoided, the coating agent is very convenient to use, and the coating agent does not contain chromium ions and other heavy metals which damage the environment, so that the coating agent is a green, energy-saving and environment-friendly product.

Description

Tungsten-containing environment-friendly coating agent, aluminum material and surface coating treatment method thereof
Technical Field
The invention relates to the technical field of metal surface treatment, in particular to a tungsten-containing environment-friendly coating agent, an aluminum material and a surface coating 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 coating agent containing tungsten with good corrosion resistance and strong binding force, a coating treatment method for the surface of an aluminum material and an aluminum material prepared by the coating treatment are provided, and the coating agent is environment-friendly, nontoxic and simple in process.
An environment-friendly coating agent containing tungsten 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 potassium permanganate, 2-10 parts of hydrofluoric acid, 2-10 parts of sodium tungstate and the balance of water.
Preferably, the weight portion of the para-tert-butyl phenolic resin is 15-36 portions.
Preferably, the weight part of the potassium permanganate is 5-10 parts.
Preferably, the weight part of the hydrofluoric acid is 2-6 parts.
Preferably, the weight part of the sodium tungstate is 3-6 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 coating agent containing tungsten; preparing a film solution with the mass percentage of 0.5-2% by using the environment-friendly tungsten-containing film agent; 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 coating agent containing tungsten has good corrosion resistance, can be used as a coating treatment bottom layer, can be sprayed or soaked in the process of treating aluminum products, does not need to be washed, 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 a tungsten-containing environment-friendly coating agent for surface pretreatment of aluminum materials, which comprises the following components in parts by weight in 1000 parts: 5-50 parts of p-tert-butyl phenolic resin, 2-20 parts of potassium permanganate, 2-10 parts of hydrofluoric acid, 2-10 parts of sodium tungstate and the balance of water.
Specifically, the weight part of the para-tert-butylphenol resin is preferably 15 to 36 parts. The weight portion of the potassium permanganate is preferably 5-10 portions. The weight portion of the hydrofluoric acid is preferably 2-6 portions. The weight part of the sodium tungstate is preferably 3-6 parts. 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 tungsten-containing coating agent, the proportion balance of the components is controlled to achieve a better film forming effect. For example, p-tert-butyl phenolic resin and potassium permanganate are used as main components of the film, after sodium tungstate is formed into the film, the corrosion resistance of an aluminum part 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 coating agent containing tungsten; preparing a film solution with the mass percentage of 0.5-2% by using the environment-friendly tungsten-containing film agent; 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 aspects of the tungsten-containing environment-friendly coating agent, the treatment method thereof and the like according to the embodiment of the invention are described by specific examples below.
Example 1
Mixing the following components in parts by weight: by weight of 1000 parts, 5 parts of p-tert-butylphenol resin, 2 parts of potassium permanganate, 2 parts of hydrofluoric acid, 2 parts of sodium tungstate 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 coating agent containing tungsten; preparing a 2 mass percent film solution from the environment-friendly tungsten-containing film agent; 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 potassium permanganate, 4 parts of hydrofluoric acid, 4 parts of sodium tungstate and the balance of water.
The treatment method comprises the following steps: preparing an environment-friendly coating agent containing tungsten; preparing a film solution with the mass percentage of 1.5% by using the environment-friendly tungsten-containing film agent; 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 weight of 1000 parts, 35 parts of p-tert-butylphenol resin, 5 parts of potassium permanganate, 6 parts of hydrofluoric acid, 6 parts of sodium tungstate 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 coating agent containing tungsten; preparing a film solution with the mass percentage of 1% by using the environment-friendly tungsten-containing film agent; 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 potassium permanganate, 6 parts of hydrofluoric acid, 6 parts of sodium tungstate 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 coating agent containing tungsten; preparing a film solution with the mass percentage of 0.5% by using the environment-friendly tungsten-containing film agent; 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 coating agent containing tungsten is used for surface pretreatment of aluminum materials, and is characterized by comprising the following components in parts by weight in 1000 parts: 5-50 parts of p-tert-butyl phenolic resin, 2-20 parts of potassium permanganate, 2-10 parts of hydrofluoric acid, 2-10 parts of sodium tungstate and the balance of water.
2. The environment-friendly coating agent containing tungsten as claimed in claim 1, wherein the weight portion of the p-tert-butylphenol resin is 15-36.
3. The environment-friendly coating agent containing tungsten as claimed in claim 1, wherein the weight portion of potassium permanganate is 5-10.
4. The environment-friendly coating agent containing tungsten as claimed in claim 1, wherein the hydrofluoric acid is 2-6 parts by weight.
5. The environment-friendly coating agent containing tungsten as claimed in claim 1, wherein the weight portion of the sodium tungstate is 3-6.
6. The environment-friendly coating agent containing tungsten as claimed in claim 1, wherein the use ratio of the coating agent is 0.5-2 wt%.
7. The environment-friendly tungsten-containing coating agent of claim 1, wherein the PH of the coating agent is 2 to 5.
8. A method for processing the surface of an aluminum material into a film comprises the following steps: preparing the environment-friendly tungsten-containing coating agent as defined in any one of claims 1 to 7; preparing a film solution with the mass percentage of 0.5-2% by using the environment-friendly tungsten-containing film agent; 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.
CN202011474563.6A 2020-12-14 2020-12-14 Tungsten-containing environment-friendly coating agent, aluminum material and surface coating treatment method thereof Withdrawn CN112708879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011474563.6A CN112708879A (en) 2020-12-14 2020-12-14 Tungsten-containing environment-friendly coating agent, aluminum material and surface coating treatment method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011474563.6A CN112708879A (en) 2020-12-14 2020-12-14 Tungsten-containing environment-friendly coating agent, aluminum material and surface coating treatment method thereof

Publications (1)

Publication Number Publication Date
CN112708879A true CN112708879A (en) 2021-04-27

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Country Status (1)

Country Link
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Application publication date: 20210427

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