KR20180134560A - Surface treating Method of internal/external plastic material and internal/external plastic material comprising surface structure manufactured using the same - Google Patents

Abstract

A surface treating method of an internal/external plastic material according to the present invention comprises a step of heating the surface of an internal/external material to a temperature not higher than the deformation temperature of the internal/external plastic material to form an aluminum-based metal film, a step of forming an anodic oxidation coating layer by anodizing the aluminum-based metal film of an equiaxed crystal structure in an acidic or alkaline electrolytic solution, and a step of coloring and sealing the anodized film layer. The step of forming the aluminum-based metal film of the equiaxed crystal structure is characterized in that an MOCVD (Metal Organic Chemical Vapor Deposition) method using an organoaluminum compound as a precursor under atmospheric pressure or reduced pressure is used. A heat distortion temperature can be lowered by forming a thick aluminum metal film at a high speed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment method for plastic inner and outer materials,

TECHNICAL FIELD The present invention relates to a surface treatment method of plastic inner and outer materials and a plastic inner and outer material having a surface structure surface treated therewith. More specifically, the present invention relates to a method of treating a surface treatment of a plastic inner and outer material at a low process temperature, Plastic inner and outer materials.

Recently, there has been known a surface treatment method of metal interior and exterior materials having an aluminum-based metal film formed on the surface of a metal interior and exterior material, anodizing, coloring and sealing to form various colors and having corrosion resistance.

Korean Patent Registration No. 10-1346014 (a surface treatment method of a metal interior / exterior material and a metal interior / exterior material having a surface structure manufactured thereby), which is related to a surface treatment method of an interior and exterior material, Discloses a method of forming an aluminum material layer by using an ion plating method which is a deposition method, anodizing, coloring and sealing.

In Korean Patent Registration No. 10-1545127 (surface treatment method of metal interior and exterior materials and surface-treated metal interior and exterior materials), a surface layer is formed of a barrier layer made of a valve metal and an aluminum-based metal, (Japanese Patent Application Laid-Open No. 10-1473641) discloses a method of treating a surface of a metal inner and outer material which forms an aluminum isotropic crystal structure through a CVD process, and a surface-treated metal Discloses a method of forming a thin film of an equiaxed crystal structure on a metal inner and outer casing at a temperature of 473-623 K by using an MOCVD method and performing anodizing treatment to perform coloring and sealing treatment.

However, in the case of plastic interior and exterior materials which are vulnerable to heat, paint coating methods are still widely used, and a method of raising a metal film and anodizing the plastic is known, but there is a practical problem.

For example, an attempt has been made to coat titanium with a plastic or titanium compound and to anodize the plastic. However, since the anodic oxidation coating layer of the titanium compound is only less than 1 mu m and an interfering color mixed with various colors is realized, Color is not implemented and corrosion resistance is also problematic.

Further, a method of forming a thick aluminum film on an aluminum plate by a vacuum vapor deposition method and then subjecting it to anodization and coloring and sealing may be devised. However, the vacuum deposition method is performed at a high degree of vacuum and it is difficult to form a thin film uniformly in a complicated shape It is difficult to apply because the adhesion of the thin film is low. Accordingly, a method of depositing an aluminum-based metal film on a plastic by using a sputtering deposition method or an ion plating method has also been devised. However, in the case of high-speed deposition, it is necessary to lower the deposition rate because deformation occurs due to accumulation of a lot of heat energy, which is a low productivity method.

 A metal organic chemical vapor deposition (MOCVD) process has been devised to overcome the drawbacks of the PVD method. The MOCVD process is a method of uniformly and rapidly depositing aluminum organic compounds at low vacuum or atmospheric pressure. However, the MOCVD process using an alkyl-based aluminum organonium compound has a high process temperature of 200 ° C to 350 ° C, so that it can not be applied to a plastic having a low heat distortion temperature and a problem of deformation at a thin thickness Technology is required.

Korean Patent Registration No. 10-1346014 Korean Patent Registration No. 10-1545127 Korean Patent Registration No. 10-1473641

The present invention forms an aluminum metal film at a high speed and at a high thickness by using an MOCVD process at a low process temperature, so that aluminum anodic oxidation treatment of a plastic inner and outer material having a low heat distortion temperature is enabled.

In the present invention, a material capable of induction heating is formed on a plastic inner and outer material which can not be subjected to induction heating, so that an MOCVD process can be applied.

According to an embodiment of the present invention, there is provided a method for surface treatment of a plastic inner and outer material, comprising the steps of: heating a surface of a plastic inner and outer material to a temperature not higher than a deformation temperature of the plastic inner and outer material; Forming an anodic oxidation coating layer by anodic oxidation treatment in an acidic or alkaline electrolytic solution; and coloring and sealing the anodic oxidation coating layer, wherein the step of forming the aluminum- Is characterized by using MOCVD (Metal Organic Chemical Vapor Deposition) in which an organoaluminum compound is used as a precursor under atmospheric pressure or reduced pressure.

In one embodiment, the organoaluminum compound is one of TEAA (trimethylamine alane), TMAA (trimethylamine alane), DMEAA (dimethylamine alane), and MPA (methylpyrrolidone alane).

In one embodiment, an intermediate layer capable of induction heating may be formed on the surface of the plastic inner casing before forming the aluminum-based metal film of the equiaxed crystal structure.

In one embodiment, the surface of the plastic interior / exterior material is heated by the induction heating method.

In one embodiment, the intermediate layer may be formed by using a PVD (Physical Vapor Deposition) method or electroless wet plating.

In one embodiment, the step of forming the anodized film layer includes a step of plasma-electrolytically oxidizing the aluminum-based metal film of the equiaxed texture with an alkaline electrolytic solution to produce a white film.

In one embodiment, the thickness of the anodized film layer is 5 占 퐉 to 100 占 퐉.

In one embodiment, the intermediate layer is formed of at least one of iron, nickel, and cobalt, or a combination of at least one material and other elements.

In one embodiment, the thickness of the intermediate layer is 0.1 to 10 μm.

In one embodiment, the coloring and sealing process is characterized by coloring using a white metal compound pigment reaction product.

The plastic interior and exterior material according to one embodiment of the present invention is characterized by comprising an anodic oxidation coating layer formed by anodic oxidation treatment of an aluminum-based metal film of equiaxed tetragonal structure and an aluminum-based metal film of the equiaxed titanium structure formed on the surface of plastic inner and outer material And the anodized film layer is colored and sealed.

In one embodiment, the aluminum-based metal film of the equiaxed crystal structure is formed by MOCVD using an organoaluminum compound as a precursor under atmospheric pressure or reduced pressure by heating to a temperature lower than the deformation temperature of the plastic inner and outer material.

In one embodiment, the organoaluminum compound is one of TEAA (trimethylamine alane), TMAA (trimethylamine alane), DMEAA (dimethylamine alane), and MPA (methylpyrrolidone alane).

In one embodiment, an intermediate layer capable of induction heating is formed before the aluminum-based metal film of the equiaxed crystal structure is formed.

In one embodiment, the surface of the inside / outside material is heated by the induction heating method.

In one embodiment, the thickness of the anodized film layer is 5 占 퐉 to 100 占 퐉.

In one embodiment, the intermediate layer is characterized in that the intermediate layer is formed of at least one of iron, nickel, and cobalt, or at least one of the materials and a combination of other elements.

In one embodiment, the thickness of the intermediate layer is 0.1 to 10 μm.

In one embodiment, the anodized film layer is a white film formed by plasma electrolytic oxidation of the aluminum-based metal film of the equiaxed texture with an alkaline electrolytic solution.

In one embodiment, the anodic oxide coating layer is colored white by using a white metal compound pigment reaction product.

According to the present invention, the aluminum metal film can be easily deposited at a low temperature through the MOCVD process even in plastic interior and exterior materials having a low heat distortion temperature, and an anodic oxidation coating layer is formed to form a surface of a plastic interior and exterior material of various colors can do.

According to the present invention, a material capable of induction heating can be formed on a plastic inner and outer material which can not be subjected to induction heating, so that the MOCVD process can be easily and economically applied.

1 is a flowchart schematically showing a procedure of a surface treatment method of a plastic internal and external material according to an embodiment of the present invention.
2 is a flowchart schematically showing a procedure of a surface treatment method of a plastic internal and external material according to another embodiment of the present invention.
3 is a cross-sectional view schematically showing a cross section of a surface treated plastic inner and outerwear according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to clarify the technical idea of the present invention. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of a computer system according to an embodiment of the present invention; Fig. For convenience of explanation, the apparatus and method are described together when necessary.

FIG. 1 is a flowchart schematically showing a procedure of a surface treatment method of a plastic inner and outerwear according to an embodiment of the present invention, and FIG. 3 is a view schematically showing a cross section of a surface treated plastic inner and outerwear according to an embodiment of the present invention . 1 and 3, the surface of the plastic innerwear material 10 is heated to a temperature not lower than the deformation temperature of the plastic inner and outerwear material, that is, the plastic deformation temperature to form an aluminum-based metal film 20 having an equiaxed texture (S110 ).

Methods for forming a metal film can be classified into physical vapor deposition (PVD) and chemical vapor deposition (CVD). The PVD method is a kind of line of sight process because of the long average free path and high adhesion coefficient because it works at higher vacuum than CVD method. That is, there is a high variation in the thickness between the source-facing region and the source-facing region, and the thickness uniformity is improved by the rotation of the object to be processed and the jig using the jig. On the other hand, the CVD method is a process which can deposit even at low vacuum and atmospheric pressure, and the average free path is shorter than the PVD method, so that the precursor is injected into the reaction path and causes many collisions before reaching the surface. In addition to this collision phenomenon, the low adhesion coefficient of the molecules and the enhanced surface diffusion by the heated base material enable coating with a more uniform film thickness.

According to the embodiment, the aluminum-based metal film 20 may be at least 5 탆 thick to realize various colors. Initially, a vacuum deposition method capable of forming at low temperature and high speed was used. However, in the vacuum deposition method, the temperature does not substantially increase even when the thickness is increased. In the case of the three-dimensional inner and outer casing 10, the difference in thickness of the metal film between the inner and outer casing 10 and the metal film is low.

For this purpose, a sputtering method and an ion plating method in a range of 1-20 mTorr, which is a vacuum degree lower than 0.01-0.1 mTorr which is a working vacuum degree of the vacuum vapor deposition method, were examined. However, in the case of a workpiece having a low strain temperature, the workpiece is deformed due to heat accumulation due to the kinetic energy of the metal particles to be deposited. In order to solve such a problem, deposition can be carried out several times to secure a desired thickness and to prevent deformation of the object to be processed. However, this method is not economical.

Accordingly, in the present invention, when a metal film is formed on a three-dimensional object using a MOCVD process, which is a CVD method, a thin film having a uniform thickness can be formed in all portions of the CVD method than in the PVD method.

In one embodiment, a MOCVD process is used that uses one or more organoaluminum compounds as precursors under atmospheric or reduced pressure conditions. Conventionally, a mixture of alkyl aluminum TMA (trimethyl aluminum), TEA (triethyl aluminum), TIBA (triisobutyl aluminum) and DIBAH (diisobutyl aluminum hydride) or alkyl aluminum and heptane was used as an organoaluminum compound precursor. However, the aluminum-based metal film is not well formed at a temperature of 250 ° C or less, and it is difficult to use due to explosive reaction in contact with air.

As the precursor of the organoaluminum compound, an aluminum-based film can be formed at a temperature of 145 ° C or lower. The amine-based precursor can be an amine-amine precursor such as triethylamine alane, trimethylamine aluminum (TMAA), dimethylamine alane (DMEAA), or methylpyrrolidone alane and alane-based compounds. Here, alane refers to a complex of aluminum hydrate with an aluminum hydride.

According to the embodiment, a process of depositing TMAA on an aluminum-based film on a substrate will be described. TMAA diffused into the substrate without pyrolysis is adsorbed on the substrate surface, . This process is a rate determining step. When the separated trimethylamine is easily desorbed and the hydrogen is also released from the alane (AlH ₃ ) due to the surface reaction, H ₂ molecules are desorbed to form a metal crystal on the substrate. The crystal growth mechanism of all amine-alane compounds is similar, and the stability of the reaction with air is improved compared with the conventional alkyl aluminum compound, and the aluminum-based film of the equiaxed crystal structure can be easily deposited at a low reaction temperature.

According to the embodiment, the method of manufacturing the aluminum metal film 20 of the equiaxed crystal structure can be manufactured by a PVD (Physical Vapor Deposition) process and a CVD (Chemical Vapor Deposition) process. It is generally known that the thin film structure changes with the temperature during the coating in the PVD process. Coatings at low temperatures are formed into columnar structures and are formed into equiaxed crystals when the temperature is coated at 2/3 or more of the melting point of the coating material. In this case, since the micropores exist in the columnar structure, there is a problem that the anodic oxidation liquid contacts with the intermediate layer through the pores in the anodic oxidation step, which is the next step in the case of forming the intermediate layer described later on the exterior material. Therefore, it is preferable to form an aluminum thin film layer with an equilibrium structure having a relatively dense structure rather than a columnar structure. Aluminum has a melting point of 660 ° C, 933 ° K in terms of Kelvin temperature, 622 ° K in 2/3 temperature and 349 ° C in terms of Kelvin temperature, so it is 350 ° C (623 ° K ), The thin film may be formed in an equiaxed crystal structure. In the PVD process, sputtering or an anode vacuum arc method can be exemplified in view of the adhesion of the formed product. However, these examples correspond to a high-temperature process performed under a temperature condition of 350 ° C or higher, and therefore, there is a problem such as melting of a plastic inner and outerwear material having a low heat distortion temperature. However, when MOCVD process is used as an amine-alane-based organic compound such as TEAA, TMAA, DMEAA, MPA, the aluminum film shows an equiaxed crystal structure below the plastic deformation temperature.

Depending on the embodiment, the process temperature range may be 80-250 占 폚. When the temperature of the process exceeds 250 ° C., not only the polycarbonate of the present invention but also other heat resistant plastics are deformed. If the temperature of the process is lower than 80 ° C., the reaction temperature is lower than the volatilization temperature of the organic aluminum precursor. Since the volatilization temperature of MPA is 65-80 ° C, if the temperature is kept below 50 ° C, the reaction does not occur on its surface. Therefore, if the cooling line is installed outside the reactor, the inner wall of the reactor is not coated.

According to an embodiment, the form of the precursor material may be injected into the vapor phase or fogged using a fine spray nozzle.

In one embodiment, the aluminum-based metal film is formed and the surface of the internal and external material 10 is subjected to a processing process using any one of electrolytic polishing, chemical polishing, mechanical polishing, and surface processing before forming the anodic oxide coating layer can do. Here, the surface machining includes sanding and hair line.

The aluminum-based metal film 20 is formed, and all or a part of the aluminum-based metal film 20 is anodized to form an anodic oxide coating layer 21 (S120). Anodizing is one of electrochemical film forming methods. In general, an acidic electrolytic solution such as sulfuric acid, hydrochloric acid, chromic acid or a mixture thereof is used, and an alkaline electrolytic solution may be used depending on the type of anodic oxidation. Aluminum is polarized in a certain electrolytic solution as an anode to form a porous aluminum oxide coating layer having excellent mechanical, electrical and chemical properties. The coating layer formed by such anodizing treatment is extremely hard, has high corrosion resistance, and can be dyed in various colors.

In one embodiment, the thickness of the anodized coating layer 21 may range from 5 占 퐉 to 100 占 퐉. If the thickness is less than 5 탆, various colors can not be formed in the subsequent coloring step. If the thickness is more than 100 탆, the process time becomes excessively long, which lowers the productivity and may cause problems in assembly with other assemblies It is because.

When the color is realized by coloring, a color which can be implemented can be determined according to the depth of the aluminum anodized coating layer 21. When the anodized coating layer 21 is thin, the black layer is not realized and only the color of the ivory- The color can not be realized.

When the anodized film layer 21 is formed, the dye is colored and sealed (S130). The process of the coloring and sealing process may be the same process as the coloring and sealing arrangement of general aluminum. Dyes, pigments, food colors and the like may be colored in the porous layer existing inside the anodic oxide coating layer 21 to make various colors. Various colors can be realized by this coloration, and the thickness of the anodized film layer 21 required in order of pink, blue, green, gold, red, and black is increased in the order of 5-30 mu m. As a method for coloring the dye, organic material coloring, inorganic coloring, electrolytic coloring method and the like can be used. It is possible to perform a sealing process for closing the hole after coloring, and it is possible to prevent the coloring from flowing through the sealing process and improve the durability and chemical corrosion resistance of the coloring. According to the embodiment, the sealing process may be a known method such as a hydration seal, a metallic seal, an organic seal, or a low-temperature seal.

As the demand for white anodizing increases, the aluminum-based metal film 20 can be deposited on the plastic inner and outer casing 10 by the MOCVD process to produce a white film. In one embodiment, an anodic oxidation process is performed to form a porous alumina layer using an acidic electrolyte, and the porous alumina layer formed is sequentially immersed in a first electrolyte and a second electrolyte solution to form a white metal compound pigment reaction product, A coating film can be produced. According to an embodiment, the white metal compound pigment reaction product may be selected from the group consisting of aluminum hydroxide, aluminum phosphate, aluminum silicate, antimony, barium hydroxide, barium carbonate, barium oxalate, barium sulfate, barium titanate, calcium carbonate, calcium oxalate, calcium sulfate, Magnesium silicate, magnesium carbonate, magnesium hydroxide, silver chloride, silver oxalic acid, tin oxide, zinc oxide, zinc phosphate, and zinc sulfide. Also, the first reactant is one of chloride, nitrate and sulfate of the metal component of the white metal compound pigment reaction product, and the second reactant includes hydroxide, phosphate, carbonate and silicate of the metal component of the white metal compound pigment reaction product Or oxalate.

In one embodiment, the aluminum-based metal film 20 is deposited on the plastic inner and outer casing 10 by an MOCVD process, and oxidized by an electrolytic oxidation method using an alkaline electrolyte to form a white film. The electrolytic solution used in the plasma electrolytic oxidation method may contain at least one of potassium hydroxide, sodium silicate, potassium fluoride, sodium aluminate, sodium borate, lithium fluoride, sodium aluminate, calcium perphosphate, potassium hydroxide and calcium perphosphate.

2 is a flowchart schematically showing a procedure of a surface treatment method of a plastic internal and external material according to another embodiment of the present invention. Referring to FIG. 2, when the surface of the plastic inner and outer casing 10 is to be heated by induction heating, an intermediate layer capable of induction heating is formed (S200).

According to the embodiment, in order to use the MOCVD process, the surface of the plastic inner casing member 10 is heated to a temperature lower than the deformation temperature of the plastic, and various methods can be applied to the method of heating the surface of the plastic inner casing member 10.

For example, when a sheath heater is used inside, it is possible to keep the inner wall of the reactor under a certain temperature by cooling the outside of the reactor, but since the sheath heater itself can not be cooled, Many coatings are made on the surface. Therefore, it is necessary to periodically remove the aluminum coated on the surface, and a complicated confronting motion is required to solve the temperature uniformity difference according to the spatial relative positions of the heater and the object to be processed.

When a halogen heater is used inside, it is difficult to use because it is coated with aluminum on the surface of the halogen heater, and when it is used outside, it is necessary to use a transparent reaction furnace through which infrared rays are transmitted, but it is difficult to cool a transparent reaction furnace.

Internal heating using microwaves is possible on plastic surfaces, but when a metal film is formed, an arc phenomenon occurs on the surface, which is unusable.

Even when a general resistance heater is used inside, aluminum is deposited on the surface of the heater to change the voltage and current characteristics, so it is not easy to adjust the process temperature consistently and aluminum of the heater surface must be removed periodically.

Generally, there is no problem even if the above-described heating method is used to use the MOCVD process. However, when a large amount of the inner and outer materials having a three-dimensional shape is desired to form a deposition film of several tens of micrometers, another heating method is required.

In one embodiment, the surface of the inner and outer material 10 may be heated using an induction heating method after forming an intermediate layer capable of induction heating. For this purpose, the reaction furnace is made of a material such as aluminum, SUS304, copper, glass, etc., which is incapable of induction heating, and a copper tube coil is provided inside and outside the reaction furnace. When induction heating is performed while cooling with water, Only the in-situ heatable material can be heated. Therefore, when the organoaluminum compound is added in the MOCVD process, deposition may be performed only on the object to be treated which has reached the reaction temperature, and deposition may not be performed on the inner wall of the reaction furnace

In one embodiment, the intermediate layer may be a ferromagnetic material such as iron, nickel, cobalt, or an alloy consisting of a combination of at least one of iron, nickel, and cobalt with other elements.

In one embodiment, the intermediate layer may be formed by a PVD (Physical Vapor Deposition) method, or may be formed by electrolytic plating or electroless plating. In terms of economy, wet plating such as electrolytic plating and electroless plating may be advantageous. In the case of electroless plating using nickel, unlike electrolytic plating, it is preferable to be formed so as to have magnetism in the form of an alloy with phosphorus or boron instead of pure nickel.

According to the embodiment, when the intermediate layer is formed by the PVD method, a substance capable of improving adhesion can be deposited on the bottom of the substance capable of induction heating, and a substance capable of further preventing oxidation Can be deposited.

In another embodiment, when the interior and exterior materials are polycarbonate, it is possible to use a sheath heater, not induction heating, to heat up to 140 占 폚 and use a CVD process. Thereafter, only the organoaluminum precursor may be added or an unreactive gas may be simultaneously introduced at a constant flow rate to form an aluminum metal film.

According to the embodiment, it is possible to use a heating method other than induction heating to form a material capable of induction heating, but this is not economical due to the above-described problems. Therefore, if a material capable of induction heating is formed, it is preferable that the surface of the plastic inner and outer material is heated by induction heating.

The steps S210 - S230 of processing the plastic inner and outer material after forming the intermediate layer are the same as those described above with reference to FIG. 1, and thus will not be described.

Hereinafter, the surface treatment method of the plastic inner and outerwear according to the present invention and examples of the plastic inner and outer material surface-treated using the method will be described. Although polycarbonate is described in the examples, this is only an example showing that it is applicable to materials having a low strain temperature, and is not limited to polycarbonate.

[Example 1]

The surface of the injected polycarbonate material is washed with nucleic acid. While maintaining the pressure of 200 mTorr under a reduced pressure condition with an argon gas and a pump, the temperature of the object to be treated is kept at 135 DEG C, which is 145 DEG C or less, which is the polycarbonate deformation temperature, using a sheath heater. The supply of argon gas is stopped and at the same time the pressure is maintained while MPA is volatilized and supplied. And an aluminum-based film having an equiaxed texture of 40 mu m was deposited at a deposition time of 50 minutes.

Chemical polishing is performed to increase the gloss of the surface, and anodic oxidation of sulfuric acid with an electrolytic solution is performed.

The anodic oxidation coat layer of 5-30 mu m could be formed depending on the anodization time, and the color of the ivory-type was easily colored even in the anodic oxide coating layer of 5 mu m, and in the case of black, it was easily colored in the anodic oxide coating layer of 20 mu m or more.

The anodic oxide coating layer was immersed in order using the barium chloride solution as the first reactant and sodium sulfate as the first reactant to form a white compound of barium sulphate in the pores and a white coating was obtained by sealing with water vapor.

[Example 2]

The surface of the injected polycarbonate material is washed with nucleic acid. The temperature is kept at 135 DEG C, which is 145 DEG C or lower, which is the deformation temperature of the polycarbonate using a sheath heater under atmospheric pressure conditions. 15 g of MPA per minute and 10 L / min of non-reactive nitrogen gas are injected into the reactor while fogging them by using a flow meter and a fine spray device. And an aluminum-based film having an equiaxed texture of 40 mu m was deposited at a deposition time of 30 minutes.

Chemical polishing is performed to increase the gloss of the surface, and anodic oxidation of sulfuric acid with an electrolytic solution is performed.

The anodic oxidation layer of 30 μm could be formed according to the anodization time, and dyeing was performed, and all colors ranging from pink, blue, green, gold, red and black were realized through the sealing process.

A white coating was prepared by the PEO method in an alkaline solution containing an alkaline hydroxide using one of phosphoric acid, phosphate and ammonia instead of sulfuric acid to obtain white, and having a pH value of 7 to 10. The alkaline hydroxide is selected from lithium hydroxide, sodium hydroxide, and potassium hydroxide. The concentration of ammonia and alkali hydroxide is preferably 45 to 60 g / l, and the phosphoric acid is preferably a concentration of 15 to 20 g / l.

[Example 3]

An electroless nickel plating was formed on the surface of the polycarbonate inner and outer casing material to be 3 탆 and attached to the magnet to obtain a magnetic body.

The temperature of the object to be treated is heated by induction heating while keeping the reduced pressure atmosphere of 300 mTorr with argon gas and pump, and maintained at 140 캜. Only the MPA is volatilized and supplied to the reactor while the supply of argon gas is stopped and the pressure is maintained. An aluminum-based metal film having a thickness of 36 탆 was formed at a deposition time of 40 minutes, and chemical polishing was performed to increase the gloss of the surface, and sulfuric acid was anodized with an electrolytic solution.

The anodic oxidation layer of 20 μm could be formed according to the anodization time, and dyeing was performed and the color was completed by the sealing process, and all the colors ranging from pink, blue, green, gold, red and black were realized.

The present invention has been described in detail with reference to the preferred embodiments shown in the drawings. These embodiments are to be considered as illustrative rather than limiting, and should be considered in an illustrative rather than a restrictive sense. The true scope of protection of the present invention should be determined by the technical idea of the appended claims rather than the above description. Although specific terms are used herein, they are used for the purpose of describing the concept of the present invention only and are not used to limit the scope of the present invention described in the claims or the claims. Each step of the present invention need not necessarily be performed in the order described, but may be performed in parallel, selectively, or individually. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that the equivalents include all components that are invented in order to perform the same function irrespective of the currently known equivalents as well as the equivalents to be developed in the future.

10: plastic interior and exterior material
20: Aluminum based metal film
21: Anodic oxidation coating layer

Claims (20)

Heating the surface of the plastic internal and external material to a temperature not higher than the deformation temperature of the plastic internal and external material to form an aluminum based metal film of equiaxed crystal structure;
Forming an anodic oxidation coating layer by anodizing the aluminum-based metal film of the equiaxed crystal structure in an acidic or alkaline electrolytic solution; And
And coloring and sealing the anodized film layer,
Wherein the step of forming the aluminum-based metal film of the equiaxed crystal structure comprises using a metal organic chemical vapor deposition (MOCVD) method in which an organoaluminum compound is used as a precursor under atmospheric pressure or reduced pressure, . The method according to claim 1,
Wherein the organoaluminum compound is one selected from the group consisting of TEAA (trimethylamine alane), TMAA (trimethylamine alane), DMEAA (dimethylamine alane), and MPA (methylpyrrolidone alane). The method according to claim 1,
Before the step of forming the aluminum-based metal film of the equiaxed texture,
And forming an intermediate layer capable of induction heating on the surface of the plastic internal and external material. The method of claim 3,
Wherein the surface of the plastic inner and outer casing is heated by the induction heating method. The method of claim 3,
Wherein forming the intermediate layer comprises:
Wherein the intermediate layer is formed using a PVD (Physical Vapor Deposition) method or electroless wet plating. The method according to claim 1,
Wherein the step of forming the anodic oxide coating layer comprises:
And subjecting the aluminum-based metal film of the equiaxed texture to a plasma electrolytic oxidation treatment in an alkaline electrolytic solution to produce a white coating film. The method according to claim 1,
Wherein the thickness of the anodized film layer is 5 占 퐉 to 100 占 퐉. The method of claim 3,
Wherein the intermediate layer comprises at least one of iron, nickel, and cobalt, or a combination of at least one substance and other elements. The method of claim 3, wherein
Wherein the intermediate layer has a thickness of 0.1 占 퐉 to 10 占 퐉. The method according to claim 1,
The coloring and sealing process may comprise:
Wherein the pigment is colored using a white metal compound pigment reaction product. An aluminum-based metal film of an equiaxed texture formed on the surface of a plastic inner and outer material; And
And an anodic oxidation coating layer formed by subjecting the aluminum-based metal film of the equiaxed crystal structure to an anodic oxidation treatment in an acidic or alkaline electrolytic solution,
Wherein the anodized film layer is colored and sealed. 12. The method of claim 11,
Wherein the aluminum-based metal film of the equiaxed crystal structure is formed by MOCVD using an organoaluminum compound as a precursor under atmospheric pressure or reduced pressure by heating at a temperature not higher than the deformation temperature of the plastic innerwear. 12. The method of claim 11,
Wherein the organoaluminum compound is any one of TEAA (triethylamine alane), TMAA (trimethylamine alane), DMEAA (dimethylamine alane), and MPA (methylpyrrolidone alane). 12. The method of claim 11,
Wherein an intermediate layer capable of induction heating is formed before the aluminum-based metal film of the equiaxed crystal structure is formed. 15. The method of claim 14,
Wherein the surface of the inside / outside material is heated by the induction heating method. 12. The method of claim 11,
Wherein the thickness of the anodized film layer is 5 占 퐉 to 100 占 퐉. 15. The method of claim 14,
Wherein the intermediate layer comprises at least one of iron, nickel, and cobalt, or at least one substance and the other element. 15. The method of claim 14,
Wherein the thickness of the intermediate layer is 0.1 占 퐉 to 10 占 퐉. 12. The method of claim 11,
The anodic oxide coating layer may be formed,
Wherein the coating film is a white coating film formed by plasma electrolytic oxidation treatment of the aluminum-based metal film of the equiaxed crystal structure with an alkaline electrolytic solution. 12. The method of claim 11,
The anodic oxide coating layer may be formed,
Wherein the pigment is colored white by using a white metal compound pigment reaction product.

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