KR20090057954A - The dispositional solution for a kind of metal surface, thereof its processing method - Google Patents
The dispositional solution for a kind of metal surface, thereof its processing method Download PDFInfo
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- KR20090057954A KR20090057954A KR1020090041944A KR20090041944A KR20090057954A KR 20090057954 A KR20090057954 A KR 20090057954A KR 1020090041944 A KR1020090041944 A KR 1020090041944A KR 20090041944 A KR20090041944 A KR 20090041944A KR 20090057954 A KR20090057954 A KR 20090057954A
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- compound
- surface treatment
- metal
- weight ratio
- magnesium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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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
- C09D7/40—Additives
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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
- C23C22/60—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 alkaline aqueous solutions with pH greater than 8
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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
- C23C22/68—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 solutions with pH between 6 and 8
Abstract
Description
The technology belonging to the present invention is a manufacturing technology for a treatment liquid in which a surface treatment liquid limited to an aluminum alloy having excellent corrosion resistance is deposited by a surface treatment such as steel, zinc, and the like, and a metal acetylacetonate, a water-soluble inorganic titanium compound, or a water-soluble It is a surface treatment liquid made of inorganic zirconium compound. It is used to deposit a surface treatment film having excellent corrosion resistance and adhesion after coating. It also deposits a surface treatment film having excellent corrosion resistance on metal surface, and zinc phosphate treatment or chromate treatment is used. It is the field about the preparation of new treatment liquid that is groundbreaking in the field.
The present invention contains copper, stainless steel, silver, platinum, rhodium, which are widely used for decorative purposes such as iron, zinc, aluminum, magnesium, etc., which were not possible in the prior art without containing any harmful components to the environment and without generating sludge as waste. Provides a surface treatment treatment solution which enables a surface treatment coating having excellent corrosion resistance on thin metals such as metals and palladium, and a structure in which two or more kinds of iron, zinc, aluminum and magnesium materials are combined, such as an automobile body. It provides a surface treatment treatment liquid that enables to deposit a surface treatment film having excellent corrosion resistance after coating on the metal surface of the metal surface, and also post-treatment on the surface where the metal and the precious metal are plated on a non-metal material such as plastic to provide high corrosion resistance It is also a technical field to have.
The background of the present technology is a method of depositing a surface treated coating having excellent corrosion resistance on a metal surface, and the recent environmental regulations on environmental pollution caused by zinc phosphate treatment or chromate treatment are harmful hexavalent chromium produced by the treatment. The background of the improvement was to avoid the treatment of containing chromate.
Therefore, as a surface treatment method which does not contain hexavalent chromium in the treatment liquid, the following invention is also set as the background. (Japanese Patent Laid-Open No. 2000-204485), but the present method does not include hexavalent chromium, which is a harmful component, by applying the composition, and makes it possible to obtain a surface treated film having excellent corrosion resistance and adhesion even after coating. Metal materials are limited to aluminum alloys, and since the surface treatment film is formed by drying after application, it is very difficult to apply to complex structures such as automobile bodies.
Due to this problem, a number of methods have been invented as a method of depositing a surface treatment film having excellent adhesion and corrosion resistance after coating by chemical reaction, for example, Japanese Patent Application Laid-open No. 56-136978, Japanese Patent Japanese Patent Application Laid-Open No. 8-176841, Japanese Patent Application Laid-Open No. 9-25436, Japanese Patent Application Laid-Open No. 9-31404, etc. It is the background of the technology that raises the problem that it is impossible to deposit the surface treatment film on the surface of the iron or zinc-based material, but is limited to aluminum alloy having excellent corrosion resistance.
The present invention is a steel-based material, a zinc-based material, an aluminum-based material, a magnesium-based material and a copper-based material which are widely used for decoration without generating sludge that does not contain harmful ingredients to the environment, which are impossible in the prior art, It provides a surface treatment liquid that enables surface treatment coatings with excellent corrosion resistance on precious metal thin films such as stainless steel materials, silver, platinum, rhodium, and palladium, and also steel materials, zinc materials, aluminum systems and An object of the present invention is to prepare a treatment solution for surface treatment in which a surface treatment film having excellent corrosion resistance after coating is deposited on a metal surface with a treatment liquid combining two or more kinds of magnesium-based materials.
On the other hand, as a means to solve the above problems by post-treatment on the surface of the metal and noble metal plated on the non-metal material such as plastic, and also to develop a new surface treatment treatment solution and surface treatment method as a means to solve the problem It was done.
When the surface of the metal is treated using the surface treatment liquid of the present invention, it is expected that the method of employing a method of performing electrolysis in the surface treatment liquid by using the metal material to be treated as a cathode is expected.
In addition, at least one or more of cobalt, nickel, tin, copper, titanium, and zirconium may be washed with or without washing the metal material to be treated after contact with the treating solution for surface treatment or after electrolytic treatment in the treating solution for surface treatment. The effect of maximizing contact with the treatment solution containing at least one polymer compound selected from an acidic aqueous solution or a water-soluble polymer compound and a water-dispersible polymer compound of the compound containing the selected element is expected.
In addition, cobalt, nickel, tin, copper, titanium, and zirconium have a high coating performance in the surface coating film layer and the thin film, but the possibility of minute defects in the surface treatment film layer generated according to the surface state of the metal material to be treated. The above fine defects are covered by contact with an acidic aqueous solution of a compound containing at least one element selected from or a treatment solution containing at least one high molecular compound selected from a water-soluble polymer compound and a water-dispersible polymer compound. A higher effect is expected.
The present invention simultaneously surface treatment of a single or two or more kinds of metal materials selected from iron, zinc, aluminum, magnesium, stainless steel, copper, silver, platinum, rhodium, palladium and the like to precipitate a surface treatment film excellent in corrosion resistance after coating This is how you do it.
The steel system material refers to metals such as steel sheets such as cold rolled steel and hot rolled steel, cast iron and sintered materials, and the zinc system material refers to zinc die-cast or zinc-containing plating. Zinc-containing plating means zinc or zinc and other metals, That is, nickel, iron, aluminum, manganese, chromium, magnesium, lead, and antimony refer to those coated with alloys or unavoidable impurities with at least one or more of these metals, and the present plating methods include, for example, hot-dip plating and electroplating. There is no limitation on the deposition plating, and the like, and the aluminum-based material refers to a plate material using a 5000-based aluminum alloy or a 6000-based aluminum alloy, or an aluminum alloy die cast represented by ADC-12.
Magnesium-based material refers to plate or die-cast using magnesium alloy, and stainless-based material refers to martensite grade stainless steel such as SUS 401 and 403, austenitic and ferritic stainless steel, and chrome stainless steel. Copper system materials refer to copper alloys such as bronze, brass, white copper, high strength brass, and the like.
The present invention is applied to a structure including the metal material alone in a constituent member, or a structure including two to four kinds of the metal material in a constituent member, wherein two to four kinds of the metal material are constituent members. In the case of application to the treatment liquid contained in the above, the surfaces of two to four kinds of metal materials can be surface treated simultaneously.
In the case of surface treatment of two or four kinds of metal materials at the same time, it is possible regardless of the state in which the dissimilar metals are not in contact with each other. It doesn't matter.
In the treatment solution for surface treatment of the present invention, 1 to 10 weight ratio (wt /%) of borax (SODIUM BORATE DECA-HYDRATE), which is an inorganic salt, in 90 to 97 weight ratio (wt /%) of distilled water. ) And citric acid 0.5 to 5 weight ratio (wt /%) and nano earth alkali metals 0.001 to 3 weight ratio (wt /%), wherein the pH of the metal surface treatment characterized in that 6 to 10 It becomes a processing liquid.
Alkaline earth metal used in the above is a group of minerals constituting the layered silicate crystal phase, and refers to natural mica nanoparticles and synthetic mica nanoparticles such as mucovite, biotite, il-light and borax concentration of 1 It is preferred that the ratio is from 10 wt% to (wt /%), but a more preferred ratio is from 2 wt% to 4 wt% (wt /%).
The addition of citric acid is preferably 0.5 to 5% by weight (wt /%), but more preferably 0.5 to 1% by weight (wt /%) and alkaline earth metal is 0.001 to 5% by weight (wt /%) g / L Although it is preferable that the ratio is more preferably 0.01 to 1 weight ratio (wt /%), but the ratio is lower than this, it is difficult for practical treatment time for sufficient plating to obtain corrosion resistance. It is preferable to maintain the pH of 6-10, and more preferable acidity is pH 7-8.
The treatment solution for surface treatment of the present invention may add at least one polymer compound from a water-soluble polymer and a water-dispersible polymer compound, and the metal material surface-treated using the treatment solution for surface treatment has sufficient corrosion resistance but additional lubricity and the like. When a function is required, a high molecular compound can be selected and added according to the function desired, and the physical property of a film may be modified.
The water-soluble polymer and the water-dispersible polymer compound, that is, for example, air of polyvinyl alcohol, poly (meth) acrylic acid, copolymer of acrylic acid and methacrylic acid, acrylic monomers such as ethylene and (meth) acrylic acid and (meth) acrylate Small amounts of high molecular compounds generally used for metal surface treatments such as copolymers, copolymers of ethylene and vinyl acetate, polyurethanes, amino-modified phenol resins, polyester resins, and epoxy resins can be added.
However, in the case where the water-dispersible polymer or the water-soluble polymer is large, the treatment solution for the surface treatment is gelled, so the amount of addition must be adjusted in a small amount.
When the metal surface is treated using the surface treatment solution of the present invention, the surface may be degreased in a general manner, and the cleansed metal material may be brought into contact with the surface treatment solution for 1 second to 10 minutes. .
It is possible to use the treatment time, but the preferred time is 1 minute before and after that, a film is deposited on the surface of the metal material, and a film having good adhesion and corrosion resistance is formed. The contact treatment is spray treatment, immersion treatment and pour pouring treatment. Processes can also be used and contact methods do not affect performance, but the recommended method is immersion treatment.
In the present invention, the temperature condition of the treatment solution for the surface treatment is between 10 and 60 ° C., but if the temperature is too low, borax precipitates in the treatment solution for the surface treatment and sinks to the bottom. It should be noted that Borax) has a solubility in water of 3.7% at 20 ° C, 51.2% at 100 ° C and generates hydrogen gas when in contact with alkali metals.
In addition, the concentration of the treatment solution for the surface treatment can be freely changed in combination with the treatment temperature and the reactivity of the treatment bath, and the non-ionic surfactant, the anionic surfactant, and the cation are added to the surface treatment solution. One or more surfactants may be added to the surface treatment from a surfactant of the system.
In the case of surface treatment of a metal material using the surface treatment liquid, a good film can be formed without degreasing and purifying the metal material to be treated in advance. That is, the surface treatment agent can be used as a surface treatment agent for degreasing. Because.
In the treatment of the surface of the metal using the treatment solution for surface treatment of the present invention, it is also possible to employ a method of performing electrolysis in the treatment solution for surface treatment using the metal material to be treated as a cathode.
Further, the metal material to be treated is selected from the group consisting of cobalt, nickel, tin, copper, titanium and zirconium, with or without washing after contact with the surface treatment liquid or electrolytic treatment in the surface treatment liquid. And contact with a treatment solution containing at least one high molecular compound selected from an acidic aqueous solution of a compound containing at least one element or a water-soluble high molecular compound and a water dispersible high molecular compound.
Although the surface treated coating layer obtained by the present invention shows excellent coating performance in the thin film, cobalt, nickel, tin, copper, titanium, and zirconium may be present because fine defects may exist in the surface treated coating layer depending on the surface state of the metal material to be treated. The above fine defects are covered by contact with an acidic aqueous solution of a compound containing at least one element selected from the group consisting of or a treatment solution containing at least one polymer compound selected from a water-soluble polymer compound and a water-dispersible polymer compound. This is even higher.
A compound containing at least one element selected from the group consisting of cobalt, nickel, tin, copper, titanium and zirconium described above. Although not particularly limited, oxides, hydroxides, fluorides, complex fluorides, chlorides, nitrates, oxynitrates, sulfates, oxysulfates, carbonates, oxycarbonates, phosphates, oxyphosphates, oxalates and oxyoxalates of the above-described metal elements And organometallic compounds.
It is preferable that pH of the acidic aqueous solution containing the said metal element is 6-8, and acid, such as phosphoric acid, nitric acid, sulfuric acid, hydrofluoric acid, hydrochloric acid, organic acid, etc., sodium hydroxide, potassium hydroxide, lithium hydroxide, ammonium salt, amines, etc. It can be adjusted with alkali.
Examples of the at least one polymer compound selected from the above-described water-soluble polymer compounds and water-dispersible polymer compounds include polyvinyl alcohol, poly (meth) acrylic acid, copolymers of acrylic acid and methacrylic acid, ethylene and (meth) acrylates. copolymers of acrylic monomers such as (acrylate), copolymers of ethylene and vinyl acetate, polyurethanes, amino-modified phenolic resins, tannins and tannic acids and salts thereof, and bitinic acids.
[Example 1]
In order to select stainless steel from iron, zinc, aluminum, magnesium, stainless steel, copper, silver, platinum, rhodium, and palladium, and to surface-treat it, borax, citric acid and nanoparticles of sodium borate decahydrate, distilled water and inorganic salts Sodium boric acid as an inorganic salt in 90 to 97 weight ratio (wt /%) of distilled water in the weighing (second step) for each material to be mixed into the surface treatment by securing the surface treatment liquid manufacturing material (first step) to secure alkaline earth metals Salt decahydrate 1 to 10 weight ratio of borax (wt /%), citric acid 0.5 to 5 weight ratio (wt /%) and nanoparticles of alkaline earth metal 0.001 to 3 weight ratio (wt /%) and pH of 6 After the preparation of the metal surface treatment solution, the mixture was mixed with distilled water for preparing the surface treatment solution (Step 3) and the alkaline earth rapid addition (Step 4) was completed. Ash to be treated in the surface treatment liquid That a satisfactory check by checking a precipitation (the fifth step) treatment for one minute, and the precipitated treatment material between the stainless steel chosen from room temperature 10~60 ℃ result (sixth step) carried out was confirmed in the experiment itself.
Borax is made by artificially adding sodium carbonate to boric acid to neutralize it. It is characterized by a lot of foam, and it also plays a role in removing the time when the pores of the skin are wide open in the human body.
In addition to the above-mentioned ratio of 1 wt ratio (wt /%) of natural mica nanoparticles to alkaline earth metals, the citric acid addition was made 2.5 weight ratio (wt /%) and sufficient plating was performed to obtain corrosion resistance. In order to maintain the pH of the surface treatment solution at 7 to 8, and to add a water-soluble polymer compound to the surface-treated metal material to have sufficient corrosion resistance, while modifying the physical properties of the coating, the surface treatment solution is a gel (gel) The amount of addition was adjusted in small amounts so as not to become paint.
1 is a process chart of the surface treatment solution preparation and surface treatment process of the present invention,
2 is an example mixing ratio of the metal or plating metal surface treatment solution of the present invention,
<Short description of code>
First step: securing the material to prepare the surface treatment liquid,
Second step: weighing for each material to be mixed into the surface treatment liquid,
Step 3: mixing with distilled water for the preparation of surface treatment liquid,
Step 4: adding alkaline earth metal to the prepared surface treatment liquid
Step 5: depositing the material to be treated into the prepared surface treatment solution,
Step 6: check the processing result of the processed fee,
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090041944A KR20090057954A (en) | 2009-05-12 | 2009-05-12 | The dispositional solution for a kind of metal surface, thereof its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090041944A KR20090057954A (en) | 2009-05-12 | 2009-05-12 | The dispositional solution for a kind of metal surface, thereof its processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20090057954A true KR20090057954A (en) | 2009-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020090041944A KR20090057954A (en) | 2009-05-12 | 2009-05-12 | The dispositional solution for a kind of metal surface, thereof its processing method |
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| Country | Link |
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| KR (1) | KR20090057954A (en) |
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2009
- 2009-05-12 KR KR1020090041944A patent/KR20090057954A/en not_active Application Discontinuation
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