阅读说明：本技术 一种无水低成本仿电镀膜及其表面处理方法 (Anhydrous low-cost imitation electroplating film and surface treatment method thereof ) 是由 池松 于 2020-03-31 设计创作，主要内容包括：本发明涉及一种金属或非金属的无水低成本仿电镀膜及其表面处理方法,将成型工件进行碳氢超声清洗除油除蜡,接着在工件喷涂高羟值的UV漆,经流平烘干固化,然后置于真空炉内等离子辉光处理,接着进行真空镀膜处理,再将镀好膜的工件喷涂高羟值的UV漆,之后再次进入真空炉内进行溅射硅靶,并逐渐增加氧气含量。最后将镀有渐层式硅及多氧化硅的工件浸入在低表面能溶液内,低温烘干即得到具有疏水,抗腐蚀的仿电镀镀层。本发明专利方法可广泛应用于五金、家电、卫浴及汽车配件等领域,具有无废水排放、成本低和性能优异等优点。(The invention relates to a metal or nonmetal waterless low-cost imitation electroplating film and a surface treatment method thereof. And finally, immersing the workpiece plated with the gradient silicon and the silicon oxide in a low-surface-energy solution, and drying at a low temperature to obtain the hydrophobic and corrosion-resistant imitation electroplating coating. The method disclosed by the invention can be widely applied to the fields of hardware, household appliances, bathrooms, automobile accessories and the like, and has the advantages of no wastewater discharge, low cost, excellent performance and the like.)

1. An anhydrous low-cost imitation electroplating film is characterized in that: the UV base layer, the alloy paint film layer, the UV middle coating, the wear-resistant layer and the corrosion-resistant hydrophobic layer are sequentially arranged from inside to outside.

2. The waterless, low-cost imitation electroplated film of claim 1, characterized by: the UV bottom layer and the UV middle coating are made of acrylic polyurethane UV paint, the hydroxyl value is 4.5-6.0, the alloy paint film layer is made of one of silicon chromium, nickel silicon chromium or titanium silicon, and the wear-resistant layer is made of gradient silicon and a silicon oxide film.

3. The waterless low-cost imitation plating film and the surface treatment method thereof according to claim 1 or 2, characterized by comprising the steps of:

step 1), performing hydrocarbon ultrasonic cleaning, oil removal and wax removal on a formed workpiece;

step 2), spraying UV paint on the workpiece after cleaning, oil removal and wax removal, leveling, drying and curing;

step 3), placing the film in a vacuum furnace for plasma glow treatment, and performing vacuum coating treatment;

step 4), spraying UV paint on the workpiece subjected to vacuum coating, leveling, drying and curing;

step 5), sputtering the silicon target in the vacuum furnace again to form gradient silicon and a silicon oxide film;

and 6) finally, immersing the workpiece plated with the gradient silicon and the silicon oxide into a low-surface-energy solution, and drying at a low temperature to obtain the hydrophobic and corrosion-resistant imitation electroplating coating.

4. The waterless low-cost plating-imitating film and the surface treatment method thereof as claimed in claim 3, wherein: in the step 3), the plasma glow treatment process conditions are that the ion source current is 0.4-0.7A, the bias voltage is 40-100V, the duty ratio is 50-90%, the argon flow is 20-120SCCM, and the time is 5-10 min.

5. The waterless low-cost plating-imitating film and the surface treatment method thereof as claimed in claim 3, wherein: in the step 3), the vacuum coating treatment process conditions comprise a high-power direct-current power supply, a current of 80-240A, a voltage of 600-800V, a bias voltage of 40-100V, a duty ratio of 50-90%, an argon gas flow rate of 80-220SCCM, and deposition time of 10-30 min.

6. The waterless low-cost plating-imitating film and the surface treatment method thereof as claimed in claim 3, wherein: in the step 3), the target material used for the vacuum coating treatment is a multi-element alloy target, and one of silicon chromium, nickel silicon chromium or titanium silicon is selected.

7. The waterless low-cost plating-imitating film and the surface treatment method thereof as claimed in claim 3, wherein: in the step 2) and the step 4), UV paint with high hydroxyl value is sprayed, the UV paint is acrylic polyurethane, the hydroxyl value is 4.5-6.0, the UV paint is dried for 3-5min at 40-60 ℃ after being leveled for 1-2min, and the UV paint is sprayed at 800-ion 1200mJ/cm²And curing for 20-50 s.

8. The waterless low-cost plating-imitating film and the surface treatment method thereof as claimed in claim 3, wherein: in the step 5), the process conditions for forming the gradient silicon and the silicon oxide film are radio frequency sputtering, 10^-3The pressure is-1 Pa, the voltage is 400-600V, the current is 0.08-0.16A, the argon pressure is 3-8Pa, the distance between the target bases is 40-60mm, the oxygen content is increased at the rate of 20-30SCCM after deposition is carried out for 1-2min, and the deposition is continued for 2-5 min.

9. The waterless low-cost plating-imitating film and the surface treatment method thereof as claimed in claim 3, wherein: in the step 6), the low surface energy solution is synthesized by stirring perfluorotridecanoic acid and tris (hydroxymethyl) aminomethane according to a molar ratio of 1:1.1-1:1.3 at 0-5 ℃ for reaction for 1-3h, performing rotary evaporation at 60-65 ℃ after the reaction is finished, and diluting the obtained distillation product and a hydrofluoroether solvent according to a volume ratio of 1:10-1:15 for later use.

Technical Field

The invention relates to an anhydrous low-cost imitation electroplating film and a surface treatment method thereof.

Background

Metal or plastic surface products require functions such as enhancing corrosion resistance, increasing hardness, preventing abrasion, improving conductivity, lubricity, heat resistance, and surface beauty, and are often subjected to plating treatment. The electroplating process is developed to the present, is an important processing technology at present, and has a great proportion in the purposes of protection, decoration and the like. In particular, functional electroplating techniques are widely used in the fields of electronic industry, communication, military industry, aerospace, and the like. Although the application of electroplating is very wide, electroplating is one of three polluted industries, and brings great harm to human health.

With the improvement of environmental protection requirements, various imitation electroplating technologies are developed in recent years, and a chinese invention patent No. CN201611153733.4 discloses an imitation electroplating processing technology for the surface of a hardware workpiece, which sequentially comprises the following steps: spraying a primer, namely uniformly spraying a UV primer on the surface of the workpiece and curing the UV primer to form a film; vacuum coating, namely placing the workpiece sprayed with the primer in a vacuum environment, and uniformly covering a coating layer on the workpiece in a distillation or sputtering mode; spraying finish paint, namely uniformly spraying high-temperature bright paint on the coating layer; coloring, namely completely soaking the workpiece in a coloring agent to color the surface of the workpiece. Although the metal layer of imitation electroplating can be obtained, the process comprises vacuum coating, two-time finish coating spraying and dip dyeing coloring, the process is complex, the processing cost is high, and a coloring agent used for coloring is toxic organic matters, which can cause certain harm to human bodies and the environment.

Chinese patent CN201711418487.5 discloses a hardware surface treatment process, which comprises the steps of baking and heating a to-be-processed hardware, adding PA11 nylon powder into the heated hardware, spraying primer, uniformly spraying UV primer on the surface of the hardware, curing the UV primer to form a film, vacuum coating, placing a workpiece sprayed with the primer in a vacuum environment, uniformly covering a coating layer on the hardware in a distillation or sputtering mode, dyeing, and completely soaking the workpiece in a dyeing agent to uniformly color the surface of the workpiece.

The invention Chinese patent CN201510487319.6 discloses an imitation electroplating coating, which comprises the following components in parts by weight: 10-15 parts of polyurethane elastomer, 3-9 parts of closed isocyanate polymer, 14-33 parts of trimethoxy silane, 3-10 parts of polyether modified polydimethylsiloxane, 4-10 parts of acrylic resin, 5-13 parts of butyl acetate, 5-12 parts of polyaspartic acid and 12-18 parts of cellulose acetate butyrate. Although the above techniques can give a plating-like appearance, they cannot give a strong metallic feeling, and are greatly limited in many application fields.

The invention discloses a corrosion-resistant coating method imitating the appearance of hexavalent chromium by electroplating, and relates to a metal and nonmetal surface coating. The process comprises the following steps: cleaning; ultraviolet light curing priming coat; evaporating a metal aluminum film; evaporating a polymer film; and (5) ultraviolet curing the surface coating. The aluminum film is isolated from contacting with the outside by the aluminum film to form a totally-enclosed structure, and then the color of the finish paint is adjusted to obtain the high-corrosion-resistant coating imitating the appearance of the electroplated hexavalent chromium. Although the imitation electroplated coating with strong metal feeling can be obtained by the above technology, because a large number of irregular discontinuous film holes exist on the surface of the paint film, water vapor and corrosive media easily permeate into the metal evaporation coating and easily corrode the metal layer, thereby affecting the appearance and the use function.

Therefore, the development of an environment-friendly low-cost corrosion-resistant electroplating-imitated surface treatment method is a problem to be solved urgently.

Disclosure of Invention

The invention aims to solve the technical problem of providing an anhydrous low-cost imitation electroplating film and a surface treatment method thereof so as to solve the problems in the background art.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an anhydrous low-cost imitation electroplating film is characterized in that: the UV base layer, the alloy paint film layer, the UV middle coating, the wear-resistant layer and the corrosion-resistant hydrophobic layer are sequentially arranged from inside to outside.

Preferably, the UV bottom layer and the UV middle coating are made of acrylic polyurethane UV paint, the hydroxyl value is 4.5-6.0, the alloy paint film layer is made of one of silicon chromium, nickel silicon chromium or titanium silicon, and the wear-resistant layer is made of gradient silicon and a silicon oxide film.

The waterless low-cost imitation electroplating film and the surface treatment method thereof are characterized by comprising the following steps of:

step 1), performing hydrocarbon ultrasonic cleaning, oil removal and wax removal on a formed workpiece;

step 2), spraying UV paint on the workpiece after cleaning, oil removal and wax removal, leveling, drying and curing;

step 3), placing the film in a vacuum furnace for plasma glow treatment, and performing vacuum coating treatment;

step 4), spraying UV paint on the workpiece subjected to vacuum coating, leveling, drying and curing;

step 5), sputtering the silicon target in the vacuum furnace again to form gradient silicon and a silicon oxide film;

and 6) finally, immersing the workpiece plated with the gradient silicon and the silicon oxide into a low-surface-energy solution, and drying at a low temperature to obtain the hydrophobic and corrosion-resistant imitation electroplating coating.

Preferably, in the step 3), the plasma glow treatment process conditions are ion source current of 0.4-0.7A, bias voltage of 40-100V, duty ratio of 50-90%, argon flow of 20-120SCCM, and time of 5-10 min.

Preferably, in the step 3), the vacuum coating treatment process conditions include a high-power direct-current power supply, a current of 80-240A, a voltage of 600-800V, a bias voltage of 40-100V, a duty ratio of 50-90%, an argon gas flow rate of 80-220SCCM, and a deposition time of 10-30 min;

preferably, in the step 3), the target material used for the vacuum coating treatment is a multi-element alloy target, and one of silicon chromium, nickel silicon chromium and titanium silicon is selected.

Preferably, in the step 2) and the step 4), UV paint with high hydroxyl value is sprayed, the UV paint is acrylic polyurethane, the hydroxyl value is 4.5-6.0, the UV paint is dried for 3-5min at 40-60 ℃ after being leveled for 1-2min, and the UV paint is cured for 20-50s at 800-1200mJ/cm 2.

Preferably, in the step 5), the process conditions for forming the gradient silicon and silicon oxide film are radio frequency sputtering, 10-3-1Pa pressure, 400V voltage, 0.08-0.16A current, 3-8Pa argon pressure, 40-60mm target base distance, increasing oxygen content at 20-30SCCM rate after deposition for 1-2min, and continuing deposition for 2-5 min.

Preferably, in the step 6), the low surface energy solution is synthesized by stirring perfluorotridecanoic acid and tris (hydroxymethyl) aminomethane at a molar ratio of 1:1.1-1:1.3 at 0-5 ℃ in an ice-water bath for 1-3h, performing rotary evaporation at 60-65 ℃ after the reaction is finished, and diluting the obtained distillation product and hydrofluoroether solvent at a volume ratio of 1:10-1:15 for later use.

As can be seen from the above description, the waterless low-cost imitation plating film and the surface treatment method thereof provided by the invention have the following advantages compared with the existing imitation plating surface treatment process:

the processing method has the advantages that the processing workpiece is subjected to hydrocarbon ultrasonic oil removal, wax removal and cleaning, the carbon hydrogen can be recycled in the processing process for zero discharge, the traditional alkaline water-soluble treatment can be replaced, and the problem of wastewater is avoided.

And secondly, an alloy paint film layer with water electroplating texture can be obtained by adopting a vacuum plating technology, so that the traditional water electroplating high-concentration acid-base, chromic acid and other heavy pollution raw materials are replaced, and the problems of wastewater treatment and discharge are avoided.

And thirdly, the inorganic wear-resistant layer of the silicon oxide is plated on the alloy paint film layer, so that the surface of the alloy paint film is more wear-resistant than the surface of the traditional paint film organic layer.

And fourthly, a low surface energy substance is impregnated on the surface of the gradient-type silicon film wear-resistant layer, so that a corrosive medium and water vapor are effectively prevented from penetrating into the product, and the service life of the product can be greatly prolonged.

And fifthly, the waterless low-sediment corrosion-resistant imitation electroplating layer can completely replace water electroplating and even exceed the corrosion resistance of the water electroplating.

Drawings

FIG. 1 is a schematic view of the structure of an electroless low-cost plating film according to the present invention.

Detailed Description

The invention is further described below by means of specific embodiments.

As shown in figure 1, the waterless low-cost imitation electroplating film provided by the invention takes the surface of a substrate 6 (workpiece) as an inner layer, and sequentially comprises a UV bottom layer 1, an alloy paint film layer 2, a UV middle coating layer 3, an abrasion-resistant layer 4 and an anti-corrosion hydrophobic layer 5 from inside to outside.

The UV bottom layer 1 and the UV middle coating 3 are made of acrylic polyurethane UV paint, the hydroxyl value is 4.5-6.0, the alloy paint film layer 2 is made of one of silicon chromium, nickel silicon chromium or titanium silicon, and the wear-resistant layer 4 is made of gradient silicon and a silicon oxide film.

According to the anhydrous low-cost imitation electroplating film and the surface treatment method thereof, the method comprises the following steps:

step 1), performing hydrocarbon ultrasonic cleaning, oil removal and wax removal on a formed workpiece;

step 2), spraying UV paint on the workpiece after cleaning, oil removal and wax removal, leveling, drying and curing;

step 3), placing the film in a vacuum furnace for plasma glow treatment, and performing vacuum coating treatment;

step 4), spraying UV paint on the workpiece subjected to vacuum coating, leveling, drying and curing;

step 5), sputtering the silicon target in the vacuum furnace again to form gradient silicon and a silicon oxide film;

and 6) finally, immersing the workpiece plated with the gradient silicon and the silicon oxide into a low-surface-energy solution, and drying at a low temperature to obtain the hydrophobic and corrosion-resistant imitation electroplating coating.

In the step 3), the plasma glow treatment process conditions are that the ion source current is 0.4-0.7A, the bias voltage is 40-100V, the duty ratio is 50-90%, the argon flow is 20-120SCCM, and the time is 5-10 min.

In the step 3), the vacuum coating treatment process conditions comprise a high-power direct-current power supply, a current of 80-240A, a voltage of 600-800V, a bias voltage of 40-100V, a duty ratio of 50-90%, an argon gas flow rate of 80-220SCCM, and deposition time of 10-30 min;

in the step 3), the target material used for the vacuum coating treatment is a multi-element alloy target, and one of silicon chromium, nickel silicon chromium or titanium silicon is selected.

And in the step 2) and the step 4), spraying UV paint with a high hydroxyl value, wherein the UV paint is acrylic polyurethane, the hydroxyl value is 4.5-6.0, drying for 3-5min at 40-60 ℃ after leveling for 1-2min, and curing for 20-50s at 800-1200mJ/cm 2.

In the step 5), the process conditions for forming the gradient silicon and the silicon oxide film are radio frequency sputtering, 10-3-1Pa pressure, 400V voltage, 0.08-0.16A current, 3-8Pa argon pressure and 40-60mm target base distance, the oxygen content is increased at the rate of 20-30SCCM after deposition for 1-2min, and deposition is continued for 2-5 min.

In the step 6), the low surface energy solution is synthesized by stirring perfluorotridecanoic acid and tris (hydroxymethyl) aminomethane according to a molar ratio of 1:1.1-1:1.3 at 0-5 ℃ for reaction for 1-3h, performing rotary evaporation at 60-65 ℃ after the reaction is finished, and diluting the obtained distillation product and a hydrofluoroether solvent according to a volume ratio of 1:10-1:15 for later use.

Compared with the prior imitation electroplating surface treatment process, the waterless low-cost imitation electroplating film and the surface treatment method thereof provided by the invention have the following advantages:

the processing method has the advantages that the processing workpiece is subjected to hydrocarbon ultrasonic oil removal, wax removal and cleaning, the carbon hydrogen can be recycled in the processing process for zero discharge, the traditional alkaline water-soluble treatment can be replaced, and the problem of wastewater is avoided.

And secondly, an alloy paint film layer with water electroplating texture can be obtained by adopting a vacuum plating technology, so that the traditional water electroplating high-concentration acid-base, chromic acid and other heavy pollution raw materials are replaced, and the problems of wastewater treatment and discharge are avoided.

And thirdly, the inorganic wear-resistant layer of the silicon oxide is plated on the alloy paint film layer, so that the surface of the alloy paint film is more wear-resistant than the surface of the traditional paint film organic layer.

And fourthly, a low surface energy substance is impregnated on the surface of the gradient-type silicon film wear-resistant layer, so that a corrosive medium and water vapor are effectively prevented from penetrating into the product, and the service life of the product can be greatly prolonged.

And fifthly, the waterless low-sediment corrosion-resistant imitation electroplating layer can completely replace water electroplating and even exceed the corrosion resistance of the water electroplating.

The following describes the green coating surface treatment method with the bionic lotus leaf bead effect through a specific implementation mode.