WO2015099498A1 - 발색 처리된 기재 및 이를 위한 기재의 발색 처리방법 - Google Patents
발색 처리된 기재 및 이를 위한 기재의 발색 처리방법 Download PDFInfo
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- WO2015099498A1 WO2015099498A1 PCT/KR2014/012920 KR2014012920W WO2015099498A1 WO 2015099498 A1 WO2015099498 A1 WO 2015099498A1 KR 2014012920 W KR2014012920 W KR 2014012920W WO 2015099498 A1 WO2015099498 A1 WO 2015099498A1
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- 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
- C23C22/64—Treatment of refractory metals or alloys based thereon
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- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/14—Magnesium hydroxide
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- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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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- 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
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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- 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
- C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
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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
- C23C22/60—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
- C23C22/62—Treatment of iron or alloys based thereon
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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
- C23C22/73—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 characterised by the process
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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
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
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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
- C23C22/82—After-treatment
- C23C22/84—Dyeing
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
Definitions
- the present invention relates to a color-treated substrate comprising magnesium and a method for color development of a substrate therefor.
- Magnesium is a metal belonging to an ultra-light metal among practical metals, and has excellent wear resistance, is resistant to sunlight, and is environmentally friendly, but it is difficult to realize texture and various colors of metal.
- the electrochemically extremely low metal is extremely active, if the color development is not performed, it is very quickly corroded in the air or in solution, and thus there are many difficulties in industrial application.
- Patent No. 2011-0134769 proposes an anodic oxidation method in which gloss is applied to a surface of a substrate including magnesium by chemical polishing, and the surface is colored by anodizing the substrate in a basic electrolyte solution in which a pigment is dissolved.
- the metal texture is realized on the surface of the substrate, but the metal texture is not inherent to magnesium, and it is difficult to realize various colors.
- the color treatment is performed using the anodic oxidation method, not only an opaque oxide film is formed on the surface of the substrate, but also there is a problem in that it is not easy to implement a metal texture.
- Another object of the present invention is to provide a method for treating color development of the substrate.
- a matrix comprising magnesium; And a film formed on the matrix and containing a compound represented by the following Chemical Formula 1,
- An average color coordinate deviation difference ( ⁇ L *, ⁇ a *, ⁇ b *) between each point provides a colored substrate that satisfies at least one condition of ⁇ L * ⁇ 0.6, ⁇ a * ⁇ 0.6, and ⁇ b * ⁇ 0.5:
- M comprises one or more selected from the group consisting of Na, K, Mg, Ca and Ba,
- n 1 or 2.
- a method for treating color development of a substrate comprising immersing a matrix containing magnesium in a hydroxide solution.
- the colored substrate according to the present invention can improve the homogeneity and corrosion resistance of the surface of the substrate by forming a film containing the compound represented by the formula (1) on the surface of the matrix containing magnesium, and uniformly color in a short time. Can be implemented. Therefore, the color-treated substrate can be usefully used in the field of electrical and electronic components such as building exterior materials, automobile interiors, especially mobile phone case parts using magnesium material.
- 1 is an image showing a CIE color space.
- FIG. 2 is a cross-sectional view showing the structure of a colored substrate including a film of a pattern structure.
- FIG 3 is a cross-sectional view showing a structure of a substrate including a pattern structure by further performing a step of immersion in a hydroxide solution before patterning on a matrix surface including magnesium.
- A is a substrate having a immersion time of 10 minutes
- B is a substrate having a immersion time of 170 minutes
- C is a substrate having an immersion time of 240 minutes.
- FIG. 5 is a photographic image of a substrate surface according to color development when corrosion resistance is evaluated in one embodiment: where A is a color untreated substrate and B is a color treated substrate.
- FIG. 6 is a graph illustrating a potentiodynamic polarization curve of a substrate according to color development and immersion time in one embodiment.
- the terms "comprise” or “have” are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.
- color coordinates means coordinates in the CIE color space, which is a color value defined by the CIE (Communication International de l'Eclairage), and any position in the CIE color space is L *, a *, b * can be expressed as three coordinate values.
- the a * value indicates whether the color with the corresponding color coordinates is pure red or pure green
- the b * value indicates that the color with the corresponding color coordinates is pure yellow and It indicates which side is pure blue.
- the a * value ranges from -a to + a
- the maximum value of a * (a * max) represents pure magenta
- the minimum value of a * (a * min) is pure green. (pure green).
- the b * value ranges from -b to + b.
- the maximum value of b * (b * max) represents pure yellow, and the minimum value of b * (b * min) represents pure blue.
- a negative b * value means a pure yellow color
- color deviation or “color coordinate deviation” means the distance between two colors in the CIE color space. That is, when the distance is far, the difference in color is great, and the distance is closer, which means that there is little difference in color, which can be expressed by ⁇ E * represented by Equation 5 below:
- the "intentional pattern” means a shape that is deliberately and / or intentionally introduced into the surface according to the use of the substrate, wherein the shape has a form having no regularity and a form having regularity. It can contain everything.
- the "wavelength conversion layer” is a layer for controlling the wavelength of the incident light by adjusting the reflection, refraction, scattering, diffraction, etc. of the light, and the light refracted and / or scattered in the film is additionally refracted in the top coat. And minimizing scattering and inducing light reflection to maintain the color developed by the film.
- the unit “T” represents the thickness of the substrate including magnesium, and may be the same as the unit “mm”.
- the present invention provides a color-treated substrate comprising magnesium and a method for color development of the substrate therefor.
- the present invention proposes a color-treated substrate comprising magnesium according to the present invention and a method of treating the color of the substrate therefor.
- the colored substrate according to the present invention can uniformly form a color within a short time by uniformly forming a film on the surface of the matrix containing magnesium, and can implement various colors according to the thickness of the formed film.
- a matrix comprising magnesium; And a film formed on the matrix and containing a compound represented by the following Chemical Formula 1,
- An average color coordinate deviation difference ( ⁇ L *, ⁇ a *, ⁇ b *) between each point provides a colored substrate that satisfies at least one condition of ⁇ L * ⁇ 0.6, ⁇ a * ⁇ 0.6, and ⁇ b * ⁇ 0.5:
- M comprises one or more selected from the group consisting of Na, K, Mg, Ca and Ba,
- n 1 or 2.
- the color-treated substrate can satisfy two or more of the above conditions, and more specifically, all of the above conditions.
- the color coordinates in the CIE color space for any three points present on the colored substrate according to the present invention were measured.
- the color coordinate deviation satisfies all of the above conditions as ⁇ L * ⁇ 0.06, 0.23 ⁇ ⁇ a * ⁇ 0.31 and 0.01 ⁇ ⁇ b * ⁇ 0.21.
- ⁇ E * derived from the measured values was 0.237 ⁇ ⁇ E * ⁇ 0.375, and it was confirmed that the deviation of the color coordinates was remarkably small. This means that the color of the color-treated magnesium according to the present invention is uniform (see Experimental Example 1).
- the color embodied in the color-treated substrate is based on the principle of scattering and refraction of light incident on the surface, and is controlled on the surface of the substrate by controlling the scattering and refractive index of incident light through controlling the average thickness of the coating film uniformly formed on the surface of the substrate. Colors can be realized uniformly.
- the matrix may be the same as the substrate before the color-treated substrate, and the matrix includes magnesium, and if the matrix can be used as a frame in the field of electrical and electronic products It is not limiting.
- a magnesium substrate composed of magnesium; Stainless steel or titanium (Ti) substrate in the form of magnesium dispersed on the surface can be used.
- the coating is not particularly limited in average thickness, but may be specifically 50 nm to 2 ⁇ m, more specifically 100 nm to 1 ⁇ m.
- the coating may have a pattern structure that implements an intended pattern on a matrix containing magnesium, and the pattern may be implemented by an average thickness variation of the coating.
- the coatings 102 and 202 include patterning regions 103 and 203 and non-patterning regions 104 and 204 of the coating.
- the patterned regions 103 and 203 may have no thickness or a thin thickness on the matrix 101 and 201 to have a constant average thickness deviation from the non-patterned regions 104 and 204.
- the pattern may be implemented due to the scattering and the refractive index difference of the incident light according to the average thickness deviation of the coating (102 and 202).
- the average thickness deviation of the coating may satisfy the condition of Equation 1:
- T 1 represents the film average thickness of the patterning area
- T 2 represents the film average thickness of the non-patterned region.
- the average thickness deviation of the coating may be 5 nm or more and less than 2.0 ⁇ m, more specifically, 5 nm to 100 nm; 50 nm to 0.5 ⁇ m; Or 0.5 ⁇ m or more and less than 2.0 ⁇ m.
- the present invention can implement a pattern more medically by inducing a large color difference between the patterned area and the non-patterned area in the average thickness deviation range.
- the color-treated substrate according to the present invention can be improved in corrosion resistance by including a film on the matrix.
- the colored substrate may satisfy the following Equation 2 when evaluating corrosion resistance:
- Corrosion Rate indicates the degree of corrosion of the color-treated substrate, measured by coincidence polarization test, at room temperature, 0.5 wt% saline, in mm / year.
- the room temperature may be 25 ⁇ 2 °C.
- the corrosion resistance of the substrate was evaluated by performing a polarization test at room temperature, 0.5% by weight saline on the colored substrate and the uncolored substrate.
- the corrosion rate (Corr. Rate) was found to be 0.0004 to 0.0013 mm / year, while the corrosion degree of the untreated substrate was 0.4322 mm / year. From these results, it can be seen that the color-treated substrate according to the present invention has excellent corrosion resistance as compared with the color-untreated substrate by forming a film on the surface (see Experimental Examples 3 and 4).
- the coating is not particularly limited as long as it can scatter and refract light incident on the surface.
- the film is any one of sodium hydroxide (NaOH), potassium hydroxide (KOH), magnesium hydroxide (Mg (OH) 2 ), calcium hydroxide (Ca (OH) 2 ) and barium hydroxide (Ba (OH) 2 ). It may be more than, and more specifically may be magnesium hydroxide (Mg (OH) 2 ).
- the film was found to have a 18.5 ⁇ 1.0 °, 38.0 ⁇ 1.0 °, 50.5 ⁇ 1.0 °, 58.5 ⁇ 1.0 °, a diffraction peak value of 62.0 ⁇ 1.0 ° and 68.5 ⁇ 1.0 ° is represented by 2 ⁇ .
- the film formed on the surface of the substrate is composed of magnesium hydroxide (Mg (OH) 2 ) having a brucite crystal form. From these results, it can be seen that the colored substrate according to the present invention contains magnesium hydroxide (Mg (OH) 2 ) (see Experimental Example 2).
- the colored substrate according to the present invention may further include a wavelength conversion layer and a top coat formed on the coating.
- the wavelength converting layer may further minimize the refraction and scattering of the light refracted and / or scattered in the film, and may maintain the color developed by the film by inducing light reflection.
- the wavelength conversion layer is aluminum (Al), chromium (Cr), titanium (Ti), gold (Au), molybdenum (Mo), silver (Ag), manganese (Mn), zirconium (Zr), palladium (Pd) ), Platinum (Pt), cobalt (Co), cadmium (Cd) or copper (Cu) may include one or more selected from the group consisting of metals and ions of the metal, specifically metal It may include chromium (Cr).
- the metal may be in the form of metal particles, and may include various types of metal nitrides, metal oxides, metal carbides, and the like by reacting with nitrogen gas, ethane gas, oxygen gas, etc. during the wavelength conversion layer forming process.
- the metal may be a continuous layer that is densely stacked on the film to completely cover the surface, or a discontinuous layer in which the metals are scattered on the film, but is not limited thereto.
- the top coat may further include to improve scratch resistance and durability of the substrate surface including magnesium.
- the clear coating agent forming the top coat is not particularly limited as long as it is a clear coating agent applicable to the metal coating. More specifically, a matte clear coating agent or a gloss / matte clear coating agent applicable to a metal coating is mentioned.
- the color-treated substrate including the top coat may have a top coat peeling rate of 5% or less when evaluated at 35 ° C., 5 wt% saline spray treatment, and after 72 hours of adhesion evaluation.
- a cross-cut tape test method was performed at 35 ° C., 5% saline, 72 hours later, on a colored treated substrate having a matt or glossy / matt topcoat.
- the area of the peeled top coat was found to be 5% or less compared to the total area of the specimen. From these results, it can be seen that the substrate on which the top coat according to the present invention is formed has excellent adhesion between the color-treated substrate and the top coat (see Experimental Example 5).
- a method for treating color development of a substrate comprising immersing a matrix containing magnesium in a hydroxide solution.
- color can be realized by immersing a matrix containing magnesium in a hydroxide solution to uniformly form a film on the surface.
- the hydroxide solution is not particularly limited as long as it is a solution containing a hydroxyl group (—OH group).
- a solution in which one or more selected from the group consisting of NaOH, KOH, Mg (OH) 2 , Ca (OH) 2 and Ba (OH) 2 is dissolved can be used.
- the color development rate, color development and color uniformity according to the type of hydroxide solution was evaluated for the matrix containing magnesium.
- the color development rate of the color is four times faster than in the case of using distilled water.
- the color of the color developed on the surface is excellent, and the color to be implemented is uniform. From these results, it can be seen that when a solution in which a metal hydroxide such as NaOH is dissolved is used as a hydroxide solution, a film is formed on the surface of the matrix quickly and uniformly to realize color with excellent color development (see Experimental Example 1).
- the manufacturing method according to the present invention can control the thickness of the film formed on the surface of the matrix according to the immersion conditions.
- the matrix since the matrix has a different thermal conductivity according to the thickness, even if the thickness of the matrix is different, even if the matrix is immersed under the same conditions, the thickness of the film formed on the surface may be different. Therefore, it is preferable to control the thickness of the film by adjusting the immersion conditions according to the thickness of the matrix containing magnesium.
- the concentration of the hydroxide solution is 1% to 80% by weight, more specifically 1% to 70% by weight; 5 wt% to 50 wt%; 10 wt% to 20 wt%; 1 wt% to 40 wt%; 30 wt% to 60 wt%; 15% to 45% by weight; 5 wt% to 20 wt%; Or 1% to 15% by weight.
- the temperature of the hydroxide solution may be 90 °C to 200 °C, more specifically 100 °C to 150 °C, even more specifically 95 °C to 110 °C.
- the immersion time may be 1 minute to 500 minutes, specifically 10 minutes to 90 minutes.
- the present invention can implement various colors economically on the surface of the substrate in the above range, it is possible to prevent the reduction of the gloss inherent in the substrate due to the excessive increase in the film thickness.
- the average thickness of the film formed on the surface of the substrate is increased, thereby changing the color developed on the surface.
- the color implemented on the surface is switched according to the thickness of the film. Therefore, it can be seen that the color embodied on the surface of the substrate can be controlled by controlling the formation rate and average thickness of the coating film by adjusting the concentration, temperature and immersion time of the hydroxide solution immersing the matrix. (See Experimental Example 2) .
- the concentration of the hydroxide solution satisfies the following Equations 3 and 4 independently of each other, and n may be performed by a method of an integer of 2 or more and 6 or less:
- N 1 and N n refer to the concentration of the hydroxide solution in each step, and the unit is weight%.
- the step of immersing in the hydroxide solution is a step of implementing a color by forming a film on the surface of the substrate containing magnesium, it is possible to adjust the color developed by controlling the thickness of the formed film.
- the concentration of the hydroxide solution to immerse the matrix N 1 to N n specifically N 1 to N 6 ; N 1 to N 5 ; N 1 to N 4 ; N 1 to N 3 ;
- the concentration of the hydroxide solution to immerse the matrix N 1 to N n specifically N 1 to N 6 ; N 1 to N 5 ; N 1 to N 4 ; N 1 to N 3 ;
- fine color differences of colors implemented on the surface may be adjusted.
- the step of immersing in the hydroxide solution may further comprise any one or more of the step of rinsing.
- the surface pretreatment is a step of removing the contaminants remaining on the surface or polishing by treating the surface with an alkaline cleaning liquid before forming a film on the matrix.
- the alkali cleaning liquid is not particularly limited as long as it is commonly used in the art for cleaning the surface of the metal, metal oxide or metal hydroxide.
- the polishing may be performed by buffing, polishing, blasting or electropolishing, but is not limited thereto.
- the film formation rate can be controlled by changing the surface energy and / or surface state of the surface, specifically, the microstructure of the surface. . That is, in the case of the matrix in which polishing has been performed, even if the coating is formed under the same conditions as the matrix in which polishing is not performed, the thickness of the coating formed on the surface of the matrix may be different, and thus, the color developed on the surface may be different. Can be.
- the patterning is a step of inducing a patterned film to be formed when the hydroxide solution is immersed by patterning the matrix surface with a masking film before immersing the matrix in the hydroxide solution.
- the patterning region 103 patterned with the masking film according to the patterning step does not form a film when the hydroxide solution is immersed, and the non-patterning region 104 is not patterned with the masking film. Since a silver film is formed and an average thickness deviation of the film is generated between them, a pattern can be realized due to a color difference generated on the surface.
- the 'patterning region 203' also relatively compared to the 'non-patterning region 204'
- a thin film may form a color by forming a film.
- the color developed in the 'patterned region 203' may be different from the color of the 'non-patterned region 204'.
- the masking film is not particularly limited as long as it is a masking film that can be patterned on the surface of the matrix, and specifically, when performing the step of dipping in a hydroxide solution, a releaseable heat-dissipating film having resistance to heat applied may be used.
- the rinsing step is a step of removing the hydroxide solution remaining on the surface by rinsing the surface of the matrix after forming the film on the matrix, specifically after immersing the matrix in the hydroxide solution. In this step, it is possible to prevent the formation of additional film by the residual hydroxide solution by removing the hydroxide solution remaining on the matrix surface.
- Specimens containing 1 cm ⁇ 1 cm ⁇ 0.4 T of magnesium were degreased by dipping in an alkaline cleaning solution, and the degreased specimens were immersed in 100 ° C., 10 wt.% NaOH solution for 40 minutes. Thereafter, the specimen was rinsed with distilled water and dried in a drying oven to prepare a color treated specimen.
- Example 1 except that the magnesium specimen was immersed in 100 ° C., 10 wt.% NaOH solution for 40 minutes instead of 40 minutes, the same procedure as in Example 1 was carried out to prepare a yellow colored specimen. .
- Example 1 Except for immersing the magnesium specimen in 100 °C, 10% by weight NaOH solution for 40 minutes in Example 1 was carried out in the same manner as in Example 1 except for immersing for 55 minutes to prepare a purple colored specimen .
- Example 1 Except for immersing the magnesium specimen in 100 °C, 10 wt% NaOH solution for 40 minutes in Example 1 was carried out in the same manner as in Example 1 except for immersing for 80 minutes to prepare a green color-treated specimen .
- a specimen containing 4 cm ⁇ 7 cm ⁇ 0.4 T of magnesium was degreased by dipping in an alkaline cleaning solution, and a masking film was attached to the degreased specimen. Thereafter, it was immersed in 100 ° C, 10 wt% NaOH solution for 20 minutes, rinsed with distilled water, and then dried in a drying oven to prepare a patterned color specimen. When the specimen was visually observed, it could be seen that the pattern was patterned on the surface.
- Specimens containing 1 cm ⁇ 1 cm ⁇ 0.4 T of magnesium were degreased by dipping in an alkaline cleaning solution, and the degreased specimens were immersed in 100 ° C. and 10 wt.% NaOH solution for 50 minutes. Thereafter, the specimen was rinsed with distilled water, dried, coated with a liquid matt clear paint on the dried specimen, and dried at 120 ° C.-150 ° C. to prepare a matte clear coated specimen. At this time, the thickness of the coated matt clear is 5 ⁇ m or less.
- Example 6 Except for immersing the magnesium specimen in 100 °C, 10% by weight NaOH solution for 50 minutes in Example 6 was carried out in the same manner as in Example 6 to prepare a matte clear coated color development specimen .
- Example 6 Except for using the matte clear coating in Example 6, except that the glossy / matte clear coating was carried out in the same manner as in Example 6 to prepare a glossy / matte clear coated color specimens.
- Example 1 instead of immersing the magnesium specimen in 100 °C, 10 wt% NaOH solution for 40 minutes in Example 1 was carried out in the same manner as in Example 1 except for immersing in 100 °C, distilled water for the time shown in Table 1 To prepare a color-treated specimen.
- Example 1 The color development power of the color-treated specimens prepared in Example 1 and Comparative Examples 1 to 3 was visually evaluated. Further, for the specimens of Examples 2 to 4 and Comparative Example 3, an arbitrary three point A to C present on each surface is selected, and the color coordinates in the CIE color space for the selected point are measured and averaged. The color coordinate deviation was calculated. In this case, the color coordinate deviation ⁇ E * was derived using Equation 5 below, and the results are shown in Table 2 below.
- the specimens treated with NaOH aqueous solution as the hydroxide solution was the specimen using distilled water as the hydroxide solution.
- the color development speed of the specimens was high. More specifically, the specimen of Example 1 treated with aqueous NaOH solution maintained the silver color, which is the color of the specimen, after 10 minutes of soaking, but after 30 minutes, it was found that yellow color developed.
- the specimen of Comparative Example 1 which had an elapsed time of 40 minutes in the specimens of Comparative Examples 1 to 3 treated with distilled water, showed a slight difference in color compared to the untreated substrate due to a slight amount of color change on the surface.
- the color of the specimen treated with NaOH aqueous solution color is uniform. More specifically, the specimen of Example 2, which was treated with NaOH aqueous solution, had color coordinate deviations of ⁇ L * ⁇ 0.06, 0.23 ⁇ ⁇ a * ⁇ 0.31, 0.01 ⁇ ⁇ b * ⁇ 0.21, and 0.237 for any three points present on the specimen. It was found that ⁇ E * ⁇ 0.375. In addition, the specimens of Examples 3 and 4 also had a color coordinate deviation of 0.02 ⁇ L * ⁇ 0.24, 0.09 ⁇ a * ⁇ 0.44, 0.03 ⁇ b * ⁇ 0.47 and 0.271 ⁇ E * ⁇ 0.630. Confirmed. However, in the specimen of Comparative Example 3, the color coordinate deviation was 2.25 ⁇ L * ⁇ 2.88, 0.79 ⁇ a * ⁇ 1.01, 3.11 ⁇ b * ⁇ 3.23 and 3.919 ⁇ E * ⁇ 4.40.
- the color development of the substrate containing magnesium is not only effective in immersing it in a hydroxide solution containing NaOH, KOH, Mg (OH) 2 , Ca (OH) 2 , Ba (OH) 2, etc. It can be seen that the color developed is also uniform.
- Specimens containing 1 cm ⁇ 1 cm ⁇ 0.4 T of magnesium were degreased by dipping in an alkaline cleaning solution, and the degreased specimens were immersed in 100 ° C. and 10% by weight aqueous NaOH solution for 240 minutes. At this time, immediately after the specimen was immersed in an aqueous NaOH solution, the color developed at intervals of 5 to 10 minutes was visually evaluated. In addition, X-ray diffraction analysis and transmission electron microscopy (TEM) of the coating were performed on the specimen at 10, 170, and 240 minutes after immersion to confirm the composition and thickness of the coating formed on the surface of the specimen. It was. The results are shown in FIG.
- the colored substrate according to the present invention was found to have a different color to develop depending on the time of immersion in the hydroxide solution. More specifically, when the uncolored silver specimen is immersed in the hydroxide solution, the color develops sequentially yellow, orange, red, purple, indigo and green after 30 minutes, and the color change is constant over time. It was found to have a cycle and repeat.
- the average thickness of the film increases to about 200 nm, 600 nm and 900 nm, respectively, as the immersion time elapses.
- the colored substrate according to the present invention is colored by including a film containing magnesium hydroxide (Mg (OH) 2 ).
- Mg (OH) 2 magnesium hydroxide
- the color-treated substrate according to the present invention is significantly improved corrosion resistance. More specifically, the untreated specimen was deteriorated due to salt corrosion and the specimen surface was not uniform even with the naked eye. On the other hand, in the color-treated test sample of Example 4 having a film formed on the surface, only a slight degree of discoloration proceeded, it was confirmed that surface deformation of the test piece was not generated but uniform.
- the base material treated with the color development according to the present invention improves corrosion resistance by forming a film on the surface.
- the density is 1.738 g / cm 3 .
- the colored substrate according to the present invention is excellent in corrosion resistance.
- the colored specimens had a corrosion degree of about 0.0004 to 0.0013 mm / yr. (Corr. Rate) and the corrosion degree gradually decreased as the color development time increased.
- the corrosion degree was about 0.4322 mm / yr, and the corrosion degree was about 330 times higher than that of the color treated specimens.
- the film formed on the surface of the color-treated substrate not only realizes color on the surface, but also plays a role in preventing corrosion of the matrix including magnesium.
- Example 6 and Example 8 the experiment was performed under the same conditions as in Experimental Example 3 on the top coat-formed colored specimens, but after 72 hours of saline spraying, the surface corrosion resistance of the specimen; And the adhesion between the colored substrate and the top coat formed on the surface.
- the adhesion was evaluated by the cross-cut tape test method. More specifically, after cutting the horizontal and vertical lines of 1 mm intervals cross each other using a knife on the coated top coat, the tape is firmly attached to the intersection of the horizontal and vertical lines, and the entire specimen is quickly peeled off. The adhesion was evaluated by measuring the area of the peeled top coat with respect to the area.
- the color coated substrate having the top coat formed according to the present invention has excellent corrosion resistance and excellent adhesion between the color coated substrate and the top coat. More specifically, the specimens of Examples 6 and 8, in which matt or glossy / matt topcoats were formed, did not show surface deformation due to corrosion even after 72 hours of salt-free water. In addition, as a result of evaluation of adhesion to the specimens subjected to the corrosion resistance test, it was confirmed that the area of the top coat peeled off the tape is 5% or less of the total area of the top coat.
- the color coated substrate having the top coat formed according to the present invention not only has excellent corrosion resistance, but also has excellent adhesion between the color treated substrate and the top coat.
- the colored substrate according to the present invention the matrix containing magnesium is immersed in the hydroxide solution containing NaOH, KOH, Mg (OH) 2 , Ca (OH) 2 , Ba (OH) 2 and the like on the surface
- the hydroxide solution containing NaOH, KOH, Mg (OH) 2 , Ca (OH) 2 , Ba (OH) 2 and the like on the surface
- the color-treated substrate can be usefully used in the field of electrical and electronic components such as building exterior materials, automobile interiors, especially mobile phone case parts using magnesium material.
- the colored substrate according to the present invention can improve the homogeneity and corrosion resistance of the surface of the substrate by forming a film containing the compound represented by the formula (1) on the surface of the matrix containing magnesium, and uniformly color in a short time. Can be implemented. Therefore, the color-treated substrate can be usefully used in the field of electrical and electronic components such as building exterior materials, automobile interiors, especially mobile phone case parts using magnesium material.
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Abstract
Description
침지시간 | |
비교예 1 | 40분 |
비교예 2 | 1시간 |
비교예 3 | 2시간 |
3 점 | L* | a* | b* | ΔL* | Δa* | Δb* | ΔE* | |
실시예 2 | A | 66.92 | 6.04 | 28.96 | - | - | - | - |
B | 66.98 | 5.81 | 58.97 | -0.06 | 0.23 | -0.01 | 0.237908 | |
C | 66.92 | 5.73 | 59.17 | 0 | 0.31 | -0.21 | 0.374433 | |
실시예 3 | A | 47.66 | 7.67 | -1.88 | - | - | - | - |
B | 47.61 | 8.02 | -1.42 | 0.05 | -0.35 | -0.47 | 0.58547227 | |
C | 47.59 | 8.11 | -1.43 | 0.07 | -0.44 | -0.45 | 0.6296476 | |
실시예 4 | A | 57.82 | -5.44 | 25.18 | - | - | - | - |
B | 57.84 | -5.35 | 25.56 | -0.02 | -0.09 | -0.38 | 0.391024 | |
C | 57.58 | -5.17 | 25.15 | 0.24 | -0.27 | 0.03 | 0.271662 | |
비교예 3 | A | 44.58 | 7.46 | 20.13 | - | - | - | - |
B | 42.33 | 8.47 | 17.02 | 2.25 | -1.01 | 3.11 | 3.919018 | |
C | 41.70 | 8.25 | 16.9 | 2.88 | -0.79 | 3.23 | 4.399023 |
발색 미처리된 시편 | 발색 처리된 시편 | |||
75분 | 150분 | 230분 | ||
Icorr (μA/cm2) | 19.298 | 0.055 | 0.025 | 0.019 |
Ecorr (VSCE) | -1.492 | -1.328 | -1.318 | -1.481 |
Epit (VSCE) | - | -1.135 | -1.180 | -1.437 |
Ecorr- Epit (V) | - | 0.193 | 0.138 | 0.044 |
부식도 (mm/yr) | 0.4322 | 0.0013 | 0.0006 | 0.0004 |
Claims (16)
- 마그네슘을 포함하는 매트릭스; 및 상기 매트릭스 상에 형성되고, 하기 화학식 1로 나타내는 화합물을 함유하는 피막을 포함하며,상기 피막 상에 존재하는 임의의 영역(가로 1 cm 및 세로 1 cm)에 포함되는 임의의 3점은,각 점들간의 평균 색좌표 편차차(ΔL*, Δa*, Δb*)가 ΔL*<0.6, Δa*<0.6 및 Δb*<0.5 중 하나 이상의 조건을 만족하는 발색 처리된 기재:[화학식 1]M(OH)m상기 화학식 1에서,M은 Na, K, Mg, Ca 및 Ba으로 이루어진 군으로부터 선택되는 1종 이상을 포함하고,m은 1 또는 2이다.
- 제 1 항에 있어서,피막의 평균 두께는, 1 내지 2 μm인 발색 처리된 기재.
- 제 1 항에 있어서,피막은, 마그네슘을 포함하는 매트릭스 상에 의도된 문양을 구현하는 패턴 구조를 갖는 발색 처리된 기재.
- 제 3 항에 있어서,문양은, 하기 수학식 1의 조건을 만족하는 피막의 평균 두께 편차에 의해 구현되는 발색 처리된 기재:[수학식 1]5 nm ≤|T1-T2|〈 2.0 μm상기 수학식 1에서,T1은 패터닝 영역의 피막 평균 두께를 나타내고,T2는 비패터닝 영역의 피막 평균 두께를 나타낸다.
- 제 1 항에 있어서,내부식성 평가 시, 하기 수학식 2의 조건을 만족하는 발색 처리된 기재:[수학식 2]부식도(Corr. Rate) ≤ 0.01상기 수학식 2에서,부식도(Corr. Rate)는 0.5 중량% 염수에서 동전위분극실험으로 측정된 발색 처리된 기재의 부식 정도를 나타내고, 단위는 mm/year이다.
- 제 1 항에 있어서,피막은, 마그네슘 수산화물(Mg(OH)2)을 포함하는 발색 처리된 기재.
- 제 1 항에 있어서,매트릭스는, 스테인레스강 또는 티타늄(Ti)을 더 포함하는 발색 처리된 기재.
- 제 1 항에 있어서,피막 상에 형성된 탑코트를 더 포함하는 발색 처리된 기재.
- 마그네슘을 포함하는 매트릭스를 수산화 용액에 침지하는 단계를 포함하는 기재의 발색 처리방법.
- 제 9 항에 있어서,수산화 용액은, NaOH, KOH, Mg(OH)2, Ca(OH)2 및 Ba(OH)2로 이루어진 군으로부터 선택되는 1종 이상을 포함하는 기재의 발색 처리방법.
- 제 9 항에 있어서,수산화 용액의 농도는, 1 중량% 내지 80 중량%인 기재의 발색 처리방법.
- 제 9 항에 있어서,수산화 용액에 침지하는 단계는, 수산화 용액의 온도가 90℃ 내지 200℃인 범위에서, 1분 내지 500분 동안 수행하는 기재의 발색 처리방법.
- 제 9 항에 있어서,수산화 용액에 침지하는 단계 이전에, 표면을 전처리하는 단계;수산화 용액에 침지하는 단계 이전에, 매트릭스 표면을 마스킹 필름으로 패터닝하는 단계; 및수산화 용액에 침지하는 단계 이후에, 린싱하는 단계 중 어느 하나 이상의 단계를 더 포함하는 기재의 발색 처리방법.
- 제 13 항에 있어서,마스킹 필름으로 패터닝하는 단계 이전에,마그네슘을 포함하는 매트릭스를 수산화 용액에 침지하는 단계를 더 포함하는 기재의 발색 처리방법.
- 제 13 항에 있어서,마스킹 필름은, 이형 가능한 방열 필름인 기재의 발색 처리방법.
- 제 9 항에 있어서,수산화 용액에 침지하는 단계는,N1 농도의 수산화 용액에서 침지하는 제1 침지 단계; 및Nn 농도의 수산화 용액에서 침지하는 제n 침지 단계를 포함하며,제1 및 제n 침지단계에서, 수산화 용액의 농도는 서로 독립적으로 하기 수학식 3 및 4를 만족하고, n은 2 이상 6 이하의 정수인 기재의 발색 처리방법:[수학식 3]8 ≤ N1 ≤ 25[수학식 4]|Nn-1-Nn| > 3상기 수학식 3 및 4에서,N1 및 Nn은 각 단계별 수산화 용액의 농도를 의미하며, 단위는 중량%이다.
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JP6240788B2 (ja) | 2017-11-29 |
US20160326656A1 (en) | 2016-11-10 |
JP6286561B2 (ja) | 2018-02-28 |
JP2017503077A (ja) | 2017-01-26 |
JP2017501305A (ja) | 2017-01-12 |
JP2017503076A (ja) | 2017-01-26 |
US20160326654A1 (en) | 2016-11-10 |
WO2015099501A1 (ko) | 2015-07-02 |
JP6286562B2 (ja) | 2018-02-28 |
CN105874100B (zh) | 2018-09-21 |
CN105849316B (zh) | 2018-06-12 |
WO2015099496A1 (ko) | 2015-07-02 |
JP2017505381A (ja) | 2017-02-16 |
US20160319437A1 (en) | 2016-11-03 |
US20160326655A1 (en) | 2016-11-10 |
WO2015099503A1 (ko) | 2015-07-02 |
JP6349402B2 (ja) | 2018-06-27 |
CN105849316A (zh) | 2016-08-10 |
CN105874100A (zh) | 2016-08-17 |
US20160319438A1 (en) | 2016-11-03 |
JP6286560B2 (ja) | 2018-02-28 |
JP2017508070A (ja) | 2017-03-23 |
WO2015099505A1 (ko) | 2015-07-02 |
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