JPH02213462A - Formation of air-cleaning ornamental base material coating layer - Google Patents

Abstract

PURPOSE:To develop a spectacle frame capable of cleaning off stench in the air by photolysis by successively forming a colored coating film of the carbide, oxide, etc., of specified metals and a film of the oxide of a Ti-based metal by PVD on the surface of a spectacle frame base material and forming a noble- metal pattern on the surface by utilizing an org. mask. CONSTITUTION:A colored coating film 2 of the metals such as Ti, V, Zr and Ta or the nitride, carbide carbonitride, etc., of their alloys is formed by PVD on the surface of a spectacle frame 1 made of a lightweight alloy such as a Ti alloy. A coating film 3 of Ti or the oxide of a Ti alloy is formed thereon, the surface is coated with the film of a patterned org. mask 5, a plating layer 4 of at least one kind among the noble metals such as Pt, Pd, Rh, Ir and Rn is further formed on the part uncoated with the org. mask 5, and then the org. mask 5 is released. The malodorous components such as ammonia and amines in the air are decomposed into the odorless components by the photocatalysis of the TiO2 in the spectacles frame, and an ornament such as a frame for spectacles is obtained.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to ornaments such as watches, eyeglass frames, picture frames, etc. The present invention relates to ornaments such as watches, eyeglass frames, picture frames, etc. This is an addition.

[Objective of the Invention] The present invention is directed to decomposing or modifying malodorous substances in odors and converting them into odorless substances using personal accessories and interior decorations. Therefore, it is an object of the present invention to provide a method for forming a film on a decorative article base material, which easily eliminates unpleasant odors, and to provide a decorative article using the same.

[Conventional technology]

Conventionally, in order to eliminate indoor odors, indoor air is refluxed into a column filled with activated carbon, and malodorous components are adsorbed onto the activated carbon. The concentration of malodorous components that cause discomfort is relatively low, and is generally below 1100 PP. In order to remove such trace amounts of malodorous components, the entire indoor air was refluxed into a column filled with activated carbon, which required equipment costs.

(Structure of the Invention) The present invention solves the above-mentioned problems of the prior art, decomposes or modifies the bad IX substance in the odor, and converts it into an odorless substance, thereby making it possible to easily eliminate unpleasant odors. The present invention aims to provide a method for forming a film on a base material and a decorative article thereof.

The present invention is based on the knowledge that the photocatalytic effect of the oxide film of titanium or titanium alloy decomposes or modifies malodorous substances.

For example, titanium oxide obtained by PVD is known to have an anatase-type crystal structure according to X-ray analysis, and this anatase-type titanium oxide exhibits unique optical properties depending on light energy. Specifically, titanium oxide acts as an n-type semiconductor, and a positive space charge layer is generated inside titanium oxide by light energy.

A potential gradient is created. When electrons are excited by light absorption from the electron-filled lower electron band (eutron band) to the upper open electron band (charged conduction band), this potential gradient causes electrons and holes (as if they had a positive charge). Separation occurs, and electrons flow to the surface and holes flow to the surface. Due to this,
It retains the energy of reduction and oxidation. When odor comes into contact with the photocatalyst in this state, it is thought that the malodorous substance is decomposed or reformed by the reduction and oxidation energy of the photocatalyst.

The odor that is the object of the present invention is all malodorous components contained in the air, such as ammonia, amines, thioethers, carbon sulfide, and hydrocarbons.

The ornamental base material to which the present invention is applied is preferably a titanium alloy, but it may be any material that is used for eyeglass frames, such as stainless steel, nickel, chromium alloy, and copper alloy.

By the way, the energy distribution of sunlight is distributed over an extremely wide range centered on the visible region.

A photocatalyst has a narrow energy absorption region centered around a certain single wavelength region, and absorbs only the energy of sunlight that corresponds to the energy absorption region of the photocatalyst. The light absorption wavelength band of titanium oxide is extremely narrow, whereas the wavelength band of sunlight is extremely wide.In order to increase the excitation of titanium oxide, it is necessary to increase the absorption of light energy. The formation of a colored film of nitride or carbide by PvD on a metal selected from titanium, vanadium, chromium, zirconium, tantalum, and aluminum or an alloy of selected metals in the second layer is caused by light transmitted through titanium oxide. This is to increase absorption and reflection of light energy.

A noble metal coating made of one metal or a compound of two or more metals from the group consisting of platinum, baladium, rhodium, iridium, and ruthenium is partially coated on the surface of titanium oxide, and the titanium oxide is brought into contact with air.

Titanium oxide has platinum, palladium,
The photo-oxidation ability of titanium oxide is promoted by supporting a metal of one of the group consisting of rhodium, iridium, and ruthenium or a noble metal consisting of two or more metal compounds. A noble metal coating made of one metal or a compound of two or more metals from the group consisting of platinum, baladium, rhodium, iridium, and ruthenium is considered to have a catalytic function for photoreduction. Titanium oxide itself has a photocatalyst 1llR,
By contacting with air, malodorous substances in the air are decomposed or modified. Photocatalytic function is promoted by contacting with noble metals made of metal compounds.

The noble metal film formation method may be PVD or wet plating.

Film buttering methods include lift-off, masking, and masking methods. The lift-off method generally uses a resist. Masking methods commonly use organic masks.

For this purpose, an organic mask is applied to the surface of the second layer according to a predetermined pattern, and the third layer is made of one of the metals from the group consisting of platinum, baladium, rhodium, iridium, and ruthenium. After forming a third layer of a noble metal coating made of more than one type of metal compound on the surface of the second layer, the mask is peeled off to partially form a noble metal coating on the second layer.

Generally, the following methods are known for forming IW4.

1. Vacuum deposition method 2. Sputtering 3. Ion blating 4. Gas phase reaction method 5. Liquid phase reaction method ur Deposltlon (hereinafter abbreviated as PVD). In the sputtering method, -10-8 to 10-
'After evacuation to a vacuum of Torr, introduce a gas containing nitrogen, oxygen, or acetylene into argon, and reduce the pressure to 1
0″”-10-'Torr! A discharge is carried out in an electrode configuration with one electrode made of titanium, and a TIN, or TIC or T is deposited on a metal or alloy substrate.
A film of lO2 is formed. A film of TIN, TIC, or TiO2 is formed by sputtering titanium from a target, depositing it on a substrate, and reacting with nitrogen, oxygen, or acetylene in the atmosphere to form a film.

In the ion blating method, -110-5 to 10-
``After evacuation to a vacuum of T o r, r, a gas containing argon, nitrogen, oxygen, or acetylene is introduced,
Pressure 10-? ~10-' Torr, evaporate titanium from an electron beam evaporation source, generate plasma using DC high pressure or high frequency power, and activate titanium and/or gas (nitrogen, oxygen, or methane). ,
It reacts in the atmosphere and forms a film on the substrate.

Function and Effect of the Invention Titanium oxide obtained by PVA is known to have anatase crystal ellipse according to X-ray analysis.
This anatase-type titanium oxide has photoheavy properties when exposed to light energy. Specifically, titanium oxide is an n-type semiconductor, and when exposed to light energy, a positive space charge layer is created inside titanium oxide. occurs, creating a potential gradient.

When electrons are excited by light absorption from the lower electron-filled electron band (electronic band) to the upper open electron band (charged conduction band), this potential gradient causes electrons and holes (as if they had a positive charge). Separation occurs, and electrons flow to the surface and holes flow to the surface. This allows reduction and oxidation energy to be retained. In this situation, when odor comes into contact with a photocatalyst, it is thought that the malodorous substance is decomposed or reformed by the reduction and oxidation energy of the photocatalyst.

The present invention is particularly effective if there is a solar barrier, but it is also effective if the illumination light has a wavelength range that includes the energy absorption region of the photocatalyst.

In particular, it can be used for a wide variety of purposes, including vehicle interiors, guest rooms, and conference rooms.

Next, it will be explained using figures.

The first T3 shows an eyeglass frame 6 as an example.

FIG. 2 is an enlarged view of part 7 of the eyeglass frame, showing the appearance of the coating layer. The present invention is not limited to the pattern shown in this figure with respect to patterns such as partial distribution, shape, and color in which the noble metal coating 4 is partially formed on the oxidizing liquid Ia3 according to a predetermined pattern. No, the pattern can be dotted, linear, or planar. The pattern arrangement is flat tissue type,
Any of the twill texture type, satin texture type, lattice type, braided type, and variations thereof can be used. FIG. 3 shows the coating layers in each step. A in FIG. 3 shows a third layer of titanium, vanadium, and zirconium on the spectacle frame base material 1.
Colored PVD or carbide coatings on metals selected from tantalum or alloys of selected metals 2
This shows that the formation of B in FIG. 3 shows that a second layer of oxide film 3 of titanium or titanium alloy is formed by PVD on the colored film of the -th layer.

C in FIG. 3 shows that a die-cut organic mask 5 is applied according to a predetermined pattern to form a noble metal coating 4 in a predetermined pattern on the second layer oxide film 3. If precious metal plating is performed after applying the organic mask 5, the precious metal will be buried in the cut-out part of the ILR machine mask 5, as shown in E in FIG. 3, but by peeling off the unnecessary organic mask, As shown in FIG. 3F, a layer iEl[4 is formed partially on the surface of the oxide film 3. Precious metal plating is PV
D or wet plating or PVD can be used in the present invention. D in FIG. 3 shows the method of engraving an organic mask. Oxidize the precious metal coating 3! After forming on the entire surface of [3], a die-carved organic mask is applied to the noble metal coating according to a predetermined pattern, and the unmasked noble metal coating is dissolved and removed. After forming the film, an unnecessary organic mask is removed to partially form an adhesive film 4 on the surface of the oxide film 3, as shown in FIG. 3F.

Next, an example will be explained.

Example 1 A spectacle frame as shown in FIG. 1 was used.

The base material is a titanium alloy. FIG. 4 shows an ion blating device. In the vacuum chamber 8, an eyeglass frame 6 suspended by a cathode electrode 9 and an evaporation source board 9 equipped with heating means on the opposing lower side are arranged, and both are connected to a DC power source 11.

The board 10 is heated to a required temperature by a heating power source 12. Using Ti as the evaporation source and W element and acetylene as the reaction gas, T was evaporated by an electron beam.
I is evaporated and reacted with the reaction gas, and the precipitation rate is reduced to approximately 0.0.
Controlled at 1-0.02 μ/min, 10-2-10
-'Torr Ion blating was performed for about 20 minutes under vacuum to form a blackish colored film with a thickness of 0.3 μm on the eyeglass frame base. This film is made of TIN and Ti.
It was assumed that it was a mixed film of C.

Next, T1 is evaporated by an electron beam using a gas mixture of 95% argon and 5% oxygen under a 10-2 to 10-' Torr vacuum to reduce the deposition rate to about 0.01-002μ/
Ion blating was performed for about 20 minutes under a vacuum of 10-2 to 10-' Torr, and a thickness of 0.0-1. A 3μ clear Oxide III coating was formed.

Next, a cutout-shaped organic mask 5 with a fine line pattern is applied, and 10
-t~10-'Torr Using argon gas under vacuum, PT is heated and evaporated by electrical resistance, and the unmasked portion of the titanium oxide film is coated with a thickness of 0. A 5μ to 3μ PT film was formed. Thereafter, the mask was peeled off. An enlarged view of the appearance of the coating on the portion 7 of the eyeglass frame shown in FIG. 1 is shown in FIG. A fine line of Pt4 was seen on the titanium oxide coating 3, and the blackish colored liquid 11 [2 passed through the titanium oxide coating 3 to obtain an elegant appearance.

Next, consider gasoline-powered vehicles (displacement 1) that are exposed to sunlight.
300CC1 mileage 7,000 KM, no air conditioning, 30 minutes of driving just before the experiment, temperature of 33 degrees, driving time of 1 hour, weather at the time of driving was clear).

As shown in Table 1, the degree of pleasure and displeasure was measured on a nine-level scale.

Dermal strength was measured on a six-level scale as shown in Table 2.

At the beginning of the experiment, the comfort and discomfort level was -2.5 and the production strength was 2.3, but at the end of the wearing experiment, the comfort and discomfort level was 0.1 and the dermal strength was 0.1, indicating that it has the ability to decompose or modify bad odors. Ta.

Table 1

[Brief explanation of the drawing]

1; Glasses frame, 2: Colored coating, 3. Oxide coating, 4:
Precious metal coating, 9: Cathode electrode, 10. Evaporation source, Figure 2 is an enlarged view of part 7 of the eyeglass frame in Figure 1 Procedural amendment June 27, 1989

Claims (4)

[Claims] (1) After forming a colored film of nitride, carbide, or a combination of nitride, carbide, and oxide on the surface of the base material by PVD, and forming an oxide film of titanium or titanium alloy by PVD on the colored film, A method for forming an air-purifying decorative article substrate coating layer, which comprises applying an organic mask according to a predetermined pattern, forming a noble metal coating, and peeling off the organic mask. (2) Titanium, vanadium, zirconium, tantalum,
For metals selected from or alloys of selected metals,
The method according to claim 1, comprising a colored coating of nitride or carbide. (3) The method according to claim 1, which comprises a noble metal coating made of one metal or a compound of two or more metals from the group consisting of platinum, palladinium, rhodium, iridium, and ruthenium. (4) When the first coating layer on the surface of the base material is a metal selected from titanium, vanadium, zirconium, and tantalum or an alloy of selected metals, a nitride, carbide, or nitride/carbide/oxide is formed by PVD. A second layer of an oxide film of titanium or titanium alloy formed by PVD on the first layer of a colored film, and platinum, palladium, and palladium formed according to a predetermined pattern on the second layer of oxide film. An ornament characterized by being composed of a third layer composed of a noble metal coating made of one metal or a compound of two or more metals from the group consisting of rhodium, iridium, and ruthenium.