KR100738796B1 - Manufacture method of the alumiumn cooling plate that coated by UV varnish contain metallic nano particles and a coating apparatus - Google Patents

Abstract

The present invention is a urethane-based and acrylic-based nanoparticles of a metal such as platinum (Pt), gold (Au), silver (Ag), and titanium dioxide (TiO ₂ ) having a particle size of 1 to 20 nanometers (nm) It is mixed with UV curing paint (ie UV paint) and continuously coated on the surface of the aluminum coil fin material for the air conditioner heat exchanger. The present invention provides a method and a coating apparatus for producing an antimicrobial aluminum coil fin material for heat exchange of an air conditioner coated with a nano coating of a metal containing nanoparticles of metal to allow hygienic air to be supplied to a room.

Description

Manufacturing method of the alumiumn cooling plate that coated by UV varnish contain metallic nano particles and a coating apparatus}

1 is a schematic perspective view for explaining the interior of the air conditioner to which the antimicrobial aluminum fin material for heat exchange according to the present invention is applied.

Figure 2 is an explanatory view showing a manufacturing process of the antimicrobial aluminum fin material for heat exchange by the coating apparatus according to the present invention.

Figure 3 is an enlarged cross-sectional view showing a roller installed at the end of the coating thickness control bar in the coating apparatus according to the invention shown in FIG.

Figure 4 is a transmission electron microscope (TEM) showing a state in which the particle size of the silver (Ag) used in the antimicrobial aluminum fin material for heat exchange of the air conditioner according to the present invention distributed in an average size of 7 nanometers (nm). Picture.

5 is a TEM photograph showing a state in which the particle size of silver (Ag) used in the antimicrobial aluminum fin material for heat exchange of the air conditioner according to the present invention is distributed in an average of 1 to 2 nanometers (nm).

<Code Description of Main Parts of Drawing>

C: Coating Equipment 10: Aluminum Sheet Roll

20: coating roll 21: support roll

22, 34: UV paint container 23, 32: coating thickness control bar

24: roller 30: top coating roll

31: Support Troll 33: UV paint supply roll

40: ceramic heater drying unit 50: UV lamp irradiation unit

60: punching part 70: cutting part.

The present invention relates to a method and a coating apparatus for manufacturing an antimicrobial aluminum coil fin material for heat exchange of an air conditioner coated with a UV coating containing nanoparticles of metal, and more particularly, a preliminary step of a punching process for manufacturing an aluminum fin material for a heat exchanger. The aluminum coil of urethane-based and acrylic UV-based paints mixed with nanoparticles of metals such as platinum (Pt), gold (Au), silver (Ag) and titanium dioxide (TiO ₂ ) having a size of 1 to 20 nm By continuously coating, drying, and hardening the surface of fin material, it gives strong anti-mildew, sterilization and antibacterial property to aluminum coil fin material for a long time, and removes various bacteria and molds that can inhabit the surface of the aluminum coil fin material. Of metal that allows air to pass through the sanitary aluminum coil fin surface to the room It relates to nanoparticles in the antimicrobial yubeuyi aluminum coil fin material manufacturing method and a coating apparatus for the heat treatment of the coating with a coating material containing the air conditioner is.

In general, the heat exchange coil provided in the air conditioner shown in FIG. 1 is formed of a circular copper tube and aluminum fins, and a heat exchange is performed while a refrigerant flows inside the copper tube and air passes between the surfaces of the aluminum coil fin material. Since the air temperature is higher than the surface temperature of the aluminum coil fin material, the relative humidity becomes high, and water droplets form on the surface of the aluminum coil fin material.

Therefore, since the aluminum coil fin material for heat exchanger applied to the air conditioner is always maintained at high humidity, microorganisms such as molds and various bacteria inhabit, causing unsanitary and various bacterial diseases. However, there is a need for an aluminum coil fin material for heat exchange of an air conditioner having strong and continuous antibacterial activity.

One example of the conventional manufacturing method of antimicrobial aluminum coil fin material for heat exchange proposed in accordance with such a request is to produce an aluminum sheet for manufacturing aluminum coil fin material with a width of 1 m or more in a specialized aluminum processing factory, and to produce the antibacterial agent required for hydrophilic paint. B. It is a method of mixing both rust-preventive coatings and coating both sides, and cutting the coated plate-shaped aluminum raw material into a width of about 300 mm and winding a length of 1,000 m or more in a rolled state. Although it provides the advantage of mass production of antimicrobial aluminum coil pin material by double-coated plate-shaped aluminum raw material mixed in the air conditioner, the air conditioner manufacturer has to secure the anti-bacterial plate-shaped aluminum raw material in advance. Burden is a problem.

In general, UV curing paints (UV paints) are mainly used in production processes requiring a relatively short drying time, and typically UV paints maintain a solid content of about 40% and a thickness of about 10 to 20 μm. In general, the present invention, which will be described later, minimizes the solids content of the UV coating and minimizes the thickness of the coating to further shorten the drying time of the UV coating. Nanoparticles are used in sizes of 1 to 20 nm, so that the coating / drying process can be performed in a short time at a process flow rate of 1.5 meters per minute prior to the punching process of aluminum coil fins without disrupting existing work processes. To show the desired antimicrobial activity).
In addition, conventional organic and chemical preservatives (e.g., Japanese Patent Laid-Open No. 1-240688 for forming a hydrophilic coating of a benzimidazole compound), and Japanese Patent Laid-Open No. 2-101395 using fast-acting and slow-release antimicrobial agents in a hydrophilic coating. Or the like, or an organic arsenic compound (e.g., U.S. Patent No. 4,683,080 using 10,10-oxybisphenoxy irsin (OBPA)) or tributyl tin, copper dioxide, powdered copper, or the like And antimicrobial and / or antifungal properties are obtained by mixing and coating the anti-corrosive coating, but in such a method, it is related to the method of uniformly antimicrobial treatment in a specialized aluminum processing company in terms of processing process.

Recently, the tendency to use silver (Ag) particles or silver ions (Ag ⁺ ) as an antimicrobial agent has spread, but the method of selecting and using the silver (Ag) particles or silver ions (Ag ⁺ ) and the material of the aluminum fin material There is a problem in that the method is insufficient economic efficiency or lack of strong antibacterial and bactericidal effect or persistence in a short time.

For example, in the case of Korean Patent Publication No. 10-2004-0095581, 300 nanometers (nm) or less, which is 10 times larger than the size (up to 20 nm) of the nanoparticles of the metal to be used in the present invention, is the upper limit. Silver (Ag) nanoparticles are used, and the amount is also used up to 35wt% of the weight of the electrodeposition paint to be used for the aluminum fin material, and especially when preparing silver particles from the silver compound (AgNO ₃ ) is difficult to maintain the excellent durability because it does not cause the removal of the oxide film surface material is an aluminum ^fin-+) counter ion of the ion "nO _3" having a "nitrate" on.

In addition, Korean Patent Publication No. 10-2004-0068489 discloses a method for producing an antimicrobial hydrophilic coating for aluminum fin material using silver (Ag) particles prepared by ion reduction of silver nitrate (AgNO ₃ ) in a surfactant acceptor. It is disclosed that even in this case, silver (Ag) particles having a size of 20 nanometers (nm) are preferably used, but the maximum value thereof is assumed to be 500 nm, and the amount of use is based on 30,000 ppm, the lowest concentration specified. When the maximum weight of the composition is 10wt%, the actual use concentration is 3,000ppm, so it is a criterion that is heavily used.

In addition, in this method, an isothiazoline-based antifungal agent can be added to supplement the antimicrobial activity, but in this case, it is used without removing nitrate ions (NO ₃ ⁻ ). in a high possibility of the corrosion, the nitrate-based ion (nO ₃ ^-) in this case access to the state of the silver (Ag) particles are not removed mixed with a UV coating material is likely to have an aluminum fin material coating color appears yellow changes to brown .
In addition, the Korean Patent Publication No. 10-2002-0086762 discloses that a polymerized polymer film is deposited by plasma treatment on a surface of a metal material, and an antimicrobial layer is formed therebetween. Expensive equipment cost for performing plasma treatment on the surface is disadvantageous.

In addition, Korean Patent Publication Nos. 10-2005-0018918 and 10-2005-0012202 disclose coating a silver nano dispersion colloidal sol solution on a cooling coil or manufacturing an air conditioner coil in which nanosilver is deposited. in the method according to the method or a plasma deposition by oxidation treatment "nO ₃ ^-" due to use of an ion is not removed, silver (Ag) colloid solutions are likely the coil surface to be corroded, in the case of plasma deposition, the unit ratio Not only does it take a lot, but there is a problem that productivity is lowered.

In addition, as the conventional antimicrobial agent does not exhibit a strong sterilizing power of 99% or more within 1 hour, and after approximately 24 hours have elapsed, the antimicrobial power can be maintained. Therefore, in order to shorten the time for maintaining the antimicrobial power, Had to be increased.
In addition, since the uniform distribution of the nanoparticles of the metal contained in the hydrophilic paint or rust preventive paint is not made, the effect on the whole paint is slow.
In addition, the preservatives may be toxic or particularly resistant to microorganisms in the case of chemicals, have a long term effect or persistence, and may cause contamination of air or water due to environmental pollution during disposal. There is a high problem.

Accordingly, the present invention has been made in view of the above-described problems of the prior art, and even if the nano-particles of the metal are used, the effects are difficult to obtain unless they exhibit strong anti-fungi and bactericidal and antibacterial properties. In consideration of this point, 1 to 20 nanometers (nm) selected from platinum (Pt), gold (Au), silver (Ag), copper (Cu), and titanium dioxide (TiO ₂ ), preferably 1 to 2 nm in size By mixing the nanoparticles of the metal with urethane-based or acrylic UV-coating to continuously coat, dry and cure the surface of the aluminum sheet prior to the punching / cutting process of the aluminum sheet for producing the aluminum coil fin material. Strong anti-mildew, bactericidal and antimicrobial properties are imparted to the aluminum coil fin produced by the aluminum sheet in the long term and can be inhabited on the surface of the aluminum coil fin. The species provide a heat exchange coil antibacterial aluminum fin material manufacturing method and a coating apparatus for the coating process of the air conditioner as bacteria and yubeuyi the coating containing the nano-particles of a metal so as to fundamentally remove the fungi it is an object.
That is, according to the present invention to form a film at a rate of about 1.5 meters per minute (M) per minute so that the flow of the punching / cutting process of the aluminum sheet for manufacturing the aluminum coil fin material, and fast drying UV drying type so that drying is finished In addition to the use of paint, the thickness of the coating is minimized to shorten the drying speed and to not interfere with the heat transfer efficiency.

In addition, in the case of using silver (Ag) particles as the nanoparticles of the metal, in particular, in the case of using nanonized silver (Ag) particles of the metal prepared using silver nitrate (AgNO ₃ ), silver generated in the manufacturing process in the colloidal solution. By removing nitrate ions (NO ₃ ⁻ ), which are the counter ions of ions (Ag ⁺ ), they maintain antimicrobial activity without corrosiveness and yellowing, and maintain excellent durability.

In order to achieve the above object, according to a preferred embodiment of the present invention, an aluminum sheet is punched to form an aluminum coil fin material, and the antibacterial aluminum fin for heat exchange of an air conditioner that performs antibacterial treatment on the surface of the aluminum coil fin material. In the method of manufacturing ash, one or more metal nanoparticles selected from platinum (Pt), gold (Au), silver (Ag), copper (Cu), titanium dioxide (TiO ₂ ) or a mixture of two or more selected from the group consisting of urethane or acrylic After mixing the UV coating and the metal nanoparticles mixed UV coating (UV) coating on the surface of the aluminum sheet by a coating apparatus prior to the punching of the aluminum sheet to be dried and cured, Nano metal of the metal to be punched to form the aluminum coil fin material by coating the aluminum sheet coated with UV coating mixed with the metal nanoparticles Provided is a method for producing an antimicrobial aluminum coil fin material for heat exchange of an air conditioner coated with particle-containing UV coating.
The UV coating applied to the aluminum sheet has a solid content in the range of 5 to 30 wt% and a film thickness of 0.5 to 1.2 μm.
The composition ratio of the UV (UV) paint is 5 to 10 wt% of urethane acrylate, 35 to 40 wt% of ethyl acetate, 5 to 10 wt% of acryl-monomer, 25 to 30 wt% of toluene, It consists of 15-20 wt% of N-butyl acetate and 2-5 wt% of acryl-oligomer.
One or more metal nanoparticles selected from platinum (Pt), gold (Au), silver (Ag), copper (Cu), titanium dioxide (TiO ₂ ) or a mixture of two or more selected from the concentration of 1,000 ppm to 10,000 ppm When the particle size is 1 to 20 nm, and the particle size of the metal nanoparticle is assumed to be 1 to 2 nm, the concentration of the aluminum sheet is 10 ppm to 50 ppm and 100 ppm to 200 ppm. It is used in any one of ranges.
As metal nanoparticles mixed in the UV coating, the metals of platinum (Pt), gold (Au), silver (Ag), copper (Cu) and titanium dioxide (TiO ₂ ) may be physically crushed or electrically exploded. Prepared by pulverization by, ions or atoms produced by plasma treatment of a metal particle in a mass (target: target), platinum (Pt), gold (Au), silver (Ag) ), Metal salts and compounds containing copper (Cu) or those prepared by purifying, dissociating and ion reducing metal oxide salts of titanium dioxide (TiO ₂ ).
Among the nanoparticles of the metal, the silver (Ag) nanoparticles include silver nitrate (AgNO ₃ ), silver perchlorate (AgClO ₄ ), silver chlorate (AgClo ₃ ), silver sulfate (Ag2SO ₄ ), silver acetate ( CH3COOAg) is used.
In addition, the silver (Ag) nanoparticles are those prepared by extracting silver (Ag) of metals by dissociating and ion-reducing the metal salts and compounds containing silver (Ag) as a surfactant as a receptor, and silver (Ag). ) Is prepared by dissociating and ion-reducing metal salts and compounds containing) to extract silver (Ag) of the metal and stabilizing with silica, zeolite or zirconium phosphate as a carrier, and containing silver (Ag) The polymer stabilizer of the metal salt and the compound is dissolved in water or a non-aqueous solvent, and further prepared by irradiating gamma rays after purging with nitrogen.
In addition, the silver nanoparticles as the metal nanoparticles compound If (AgNO ₃₎ is produced in that a compound (AgNO ₃₎ in the silver (Ag), a counter ion of a silver ion (Ag ⁺⁾ are generated in the case of producing the particles in "nitric acid group" ion is "NO ₃ ^-" having a colloid on the pass and removed by vacuum distillation of the ion exchange resin is said to (Ag) particles are mixed in yubeuyi (UV paint) is coated on the surface material is the aluminum fin It prevents oxidation, corrosion and yellowing of the finished film.
The coating apparatus for coating on the surface of the aluminum sheet for aluminum fin material according to the invention is to punch and cut the aluminum sheet supplied from the aluminum sheet roll to form the aluminum coil fin material for heat exchange prior to the punching process of the aluminum sheet In the coating device for coating a UV coating on the surface, the lower coating roll and the supporter is installed to be symmetrical with each other so that the aluminum sheet supplied from the aluminum sheet roll is passed, the lower portion of the lower coating roll (UV) UV paint container containing the paint is installed so that a part of the lower coating roll is locked, and only a certain amount of UV coating (UV) paint on the lower coating roll on the side of the lower coating roll of the aluminum sheet A coating thickness control bar is installed to be coated on the lower surface, and behind the lower coating roll The upper coating roll and the support roll through which the aluminum sheet passed between the lower coating roll and the support trolley are installed, and a coating thickness adjusting bar is installed at the side of the upper coating roll, and the upper coating roll is connected to the upper coating roll. Rotating UV paint supply roll is installed, the UV paint supply is installed on the upper side of the UV paint supply roll UV coating (UV) paint supplied from the bottom of the UV paint supply to the UV paint supply roll and the upper coating roll Buried in order to form a UV coating film on the upper surface of the aluminum sheet, the UV (UV) paint is one selected from platinum (Pt), gold (Au), silver (Ag), titanium dioxide (TiO ₂ ) Or it is any one of the urethane-based UV (UV) paint and acrylic-based UV (UV) paint mixed with a mixture of two or more selected metal nanoparticles, the coating thickness adjustment bar is attached to the end of the cylindrical The wires of metal or polymer composites with a diameter of 0.5 to 1.2 μm are wound on the rollers at regular intervals, or the surface of the cylindrical rollers is processed to have a height of 0.5 to 1.2 μm at relief at regular intervals. It is constructed so that the paint is buried as much as the height.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

First, the UV paint coating apparatus (C) for manufacturing the antimicrobial aluminum coil fin material for heat exchange of the air conditioner according to the present invention and the manufacturing process of the aluminum fin material for heat exchange using the coating device (C) will be described.

As shown in FIG. 3, an aluminum sheet roll 10 is wound around an aluminum sheet for manufacturing an aluminum fin material for heat exchange, and a lower coating roll (coating roll) is formed in the unwinding direction of the aluminum sheet roll 10 ( 20 and the support rolls 21 are symmetrically installed so that the aluminum sheet passes between the lower coating roll 20 and the support rolls 21.
The UV coating container 22 is installed below the lower coating roll 20, and the UV coating container 22 is installed so that the lower portion of the lower coating roll 20 is locked, and the lower coating roll ( At the side of 20), the coating thickness adjusting bar 23 is installed so that only a predetermined amount of UV paint is buried on the lower coating roll 20.

The upper coating roll 30 and the support trolley 31 are installed at the rear of the lower coating roll 20 so that the aluminum sheet passed between the lower coating roll 20 and the support trolley 21 is the upper coating roll 30. And pass through between the support and the support 31, and the coating thickness adjustment bar 32 is installed on the side of the upper coating roll (30).
On the upper side of the upper coating roll is installed a UV paint supply roll 33 which is in contact with the upper coating roll 30, the UV paint supply roll 33 is installed on the upper side of the UV paint barrel 34 When the UV paint supplied from the lower part of the UV paint container 34 is buried in the UV paint supply roll 33, the UV paint is buried in the upper coating roll 30 again to form a UV coating film on the upper surface of the aluminum sheet. To form. At this time, only a predetermined amount of UV paint is buried by the coating thickness adjusting bar 32 on the upper coating roll 30.

Here, the coating thickness adjusting bar (23) 32 is a metal or polymer having a desired diameter of 0.5 to 1.2㎛ thickness on the cylindrical roller (24) attached to the ends of the adjusting bar (23) (32) The wires of synthetic components are wound at regular intervals, or the surface of the cylindrical roller 24 is processed to have a height of 0.5 to 1.2 占 퐉 at reliefs at regular intervals, so that the paint is buried as much as the gap or the relief of the diameter thereof. The aluminum sheet for aluminum coil fin material is to be coated.

The ceramic heater drying unit 40 using far infrared rays is installed at the rear of the upper coating roll 30 to remove volatile substances of UV paint by radiant heat through a ceramic heater, and then the ceramic heater drying unit ( After the UV paint is completely dried and cured through the UV lamp irradiation unit 50 installed at the rear of 40), a plurality of perforations are formed in the aluminum sheet at the punching unit 60 installed at the rear of the UV lamp irradiation unit 50. After forming the aluminum sheet product is cut to a predetermined size through the cut portion 70 installed in the rear of the punching portion 60 is produced.

The urethane-based or acrylic-based UV paint applied to the heat exchanger aluminum fin material of the air conditioner has a solid content in the range of 5 to 30 wt% and the film thickness is 0.5 to 1.2 μm to minimize the thickness thereof, thereby shortening the drying time thereof. The composition ratio of UV paint for this is 5 to 10 wt% of urethane acrylate, 35 to 40 wt% of ethyl acetate, 5 to 10 wt% of acryl-monomer, 25 to 30 wt% of toluene, enbutyl 15-20 wt% of acetate (N-butyl acetate) and 2-5 wt% of acryl-oligomer.

In addition, one selected from platinum (Pt), gold (Au), silver (Ag), copper (Cu), titanium dioxide (TiO ₂ ), or two selected from among the UV paints used for coating treatment The metal nanoparticles of the above-mentioned mixtures have a concentration of 1,000 ppm to 10,000 ppm, and a particle size of 1 to 20 nm.
In particular, in order to maintain a stronger sterilizing power, in order to increase the surface energy (that is, the surface area) of the nanoparticles of the metal, the size of 1 to 2 nm is used, and the amount of use is in the range of 100 ppm to 200 ppm, while the simple If antimicrobial activity is required, the concentration is optionally adjusted to a concentration of 10ppm to 50ppm and mixed with the UV paint.

Nanoparticles of the metal, that is, nanoparticles selected from platinum (Pt), gold (Au), silver (Ag), copper (Cu), and titanium dioxide (TiO ₂ ) are physically ground by grinding the corresponding metal. Produced by a method of pulverizing by an electrical explosion, or by a method of separating ions or atoms from a target object (target) in a lump state by plasma treatment. Or dissociation, ions of metal salts and compounds containing platinum (Pt), gold (Au), silver (Ag), copper (Cu) or metal oxide salts of titanium dioxide (TiO ₂ ) What is produced by reduction is used.

In particular, among the nanoparticles of metal, silver (Ag) nanoparticles are metal salts and compounds such as silver nitrate (AgNO ₃ ), silver perchlorate (AgClO ₄ ), silver chlorate (AgClo ₃ ), silver sulfate (Ag2SO ₄ ), silver acetate ( CH ₃ COOAg) to use the nanoparticles of the metal prepared by using.

In addition, the silver (Ag) nanoparticles are prepared by extracting silver (Ag) of the metal by dissociating and ion-reducing the metal salts and compounds containing the surfactant as a receptor and the silver (Ag), or silver ( Prepared by dissociating metal salts and compounds containing Ag) and ion reduction to extract silver (Ag) of the metal and stabilizing with silica, zeolite or zirconium phosphate as a carrier, or silver (Ag) The polymer stabilizer of the metal salts and compounds contained therein is dissolved in water or a non-aqueous solvent, purged with nitrogen, and then prepared by irradiating gamma rays.

Here, the above silver ions (Ag ⁺ is a metal produced by silver nitrate (AgNO ₃₎ as a raw material in a compound of silver (Ag) is necessarily generated in a case in that silver nitrate (AgNO ₃₎ are for producing a (Ag) particles ) ion is "NO ₃ ^-" having a counter ion of "nitric acid group" of the pass to the ion exchange resin to remove it because it provides a cause of the oxidation and corrosion of the coated film on the surface material is an aluminum fin or vacuum distillation Colloidal silver (Ag) particles removed by a method or the like is mixed with a UV paint (urethane or acrylic UV dry paint) and coated on an aluminum fin material.

At this time, in the present invention, it is possible to obtain a uniform dispersion state as shown in Figs.

Hereinafter, the present invention will be described with reference to Examples in order to explain the present invention more clearly. However, it turns out that this invention is not limited only to this Example.

EXAMPLE

In the process of coating a urethane or acrylic UV paint on the surface of an aluminum sheet for manufacturing an aluminum fin material for heat exchange of an air conditioner, when nano silver (Ag) is mixed with the UV paint, the particle size specification is 7 nm on average. Diluted silver (Ag) particles were diluted to 200ppm concentration and tested for sterilizing power against Staphylococcusaureus ATCC 6538P and Pseudomonas aeruginosa ATCC 27853 using coated specimens. The bactericidal power of the above (more than log4 by JIS Japanese Industrial Standards test) was shown.

1. Test Result: Sterilization (applicable method of client-JIS Z 2801)-1 hour, 3 hours after

2. Test method

JIS Z 2801

Standard cloth film: Stomacher 400 poly-bag

-Test conditions: Test bacteria after 35 hours at 35 ± 1 ℃, RH 90 ± 5% for 3 hours

Antibacterial activity value (S): log (Ma / Mb), reduction rate (%): [(Mb-Mc) / Mb] × 100

Ma: Average of the number of live bacteria immediately after inoculation of the test bacteria of the standard sample (3 samples)

Mb: Average number of viable cells after culturing for a certain time (1 hour, 3 hours) of a standard sample (3 samples)

Mc: Average number of viable cells (3 samples) after incubation for a certain time (1 hour, 3 hours) of standard processed samples.

As described above, according to the method and the coating apparatus of the antimicrobial aluminum coil fin material for heat exchange of the air conditioner coated with the UV coating containing the nanoparticles of the metal according to the present invention, UV to the aluminum sheet for manufacturing the aluminum coil fin material One or more selected from fine platinum (Pt), gold (Au), silver (Ag), copper (Cu), titanium dioxide (TiO ₂ ) having a size of 1 to 20 nm in the coating process By mixing the mixed metal nanoparticles with the UV paint in a constant ratio, there is no need for a separate antimicrobial coating process.
In addition, the air conditioner manufacturer can reduce the inventory burden due to the need to prepare a large amount of antimicrobial aluminum sheet prepared in advance as conventional, because it can be produced in a flexible amount required for the antimicrobial aluminum sheet.
In particular, by controlling the amount of the nanoparticles of the metal mixed in the UV paint, it is possible to control the degree of antimicrobial, bactericidal, and antifungal efficacy of the aluminum coil fin material, thereby attaining economic and appropriate antimicrobial effects simultaneously. In particular, it has the advantage of producing a small amount of single product.

In addition, the antimicrobial aluminum fin material according to the present invention obtains a uniform distribution of nanoparticles of metal and can effectively remove various bacteria and fungi that can inhabit the surface of the fin material very effectively throughout the paint, and It can be sterilized strongly within 1 hour.

In addition, in the case of using silver (Ag) particles of metals prepared from silver nitrate (AgNO ₃ ), the nitrate group ions (NO ₃ ⁻ ), which are relative ions of silver ions (Ag ⁺ ) generated during the manufacturing process, in the colloidal solution are removed. Because of the use, it is not corrosive to aluminum fin material and yellowing, which is a color change of UV paint, does not appear and at the same time maintains excellent durability.

In addition, the product can be economically and efficiently by adding only the process of surface coating by mixing UV coating and a small amount of metal nanoparticles into the punching process for forming a conventional aluminum sheet into an aluminum coil fin without changing a special process. Various effects can be obtained including production.

Claims (8)

In the manufacturing method of the antibacterial aluminum fin material for heat exchange of an air conditioner which punches an aluminum sheet and forms it from an aluminum coil fin material, and performs an antibacterial treatment on the surface of the aluminum coil fin material, One or more metal nanoparticles selected from platinum (Pt), gold (Au), silver (Ag), copper (Cu), titanium dioxide (TiO ₂ ) or a mixture thereof may be urethane-based or acrylic UV coatings. Mix in, The UV coating of the metal nanoparticles is coated on the surface of the aluminum sheet by a coating apparatus prior to the punching of the aluminum sheet to be dried and cured, and then the UV nanoparticles mixed with the metal nanoparticles ( UV) A method for producing an antimicrobial aluminum coil fin material for heat exchange of an air conditioner coated with a nano-vein coating containing metal nanoparticles, characterized in that the punching of the aluminum sheet coated with paint to form the aluminum coil fin material. The UV coating applied to the aluminum sheet has a solid content in the range of 5 to 30 wt% and a film thickness of 0.5 to 1.2 μm. The composition ratio of the UV (UV) paint is 5 to 10 wt% of urethane acrylate, 35 to 40 wt% of ethyl acetate, 5 to 10 wt% of acryl-monomer, 25 to 30 wt% of toluene, Antibacterial aluminum for heat exchange of air conditioner coated with UV coating containing nanoparticles of metals, characterized in that it consists of 15-20 wt% of N-butyl acetate and 2-5wt% of acryl-oligomer. Method for manufacturing coil fin material. The method of claim 1, wherein the platinum (Pt), gold (Au), silver (Ag), copper (Cu), titanium dioxide (TiO ₂ ) one or more selected from the metal nanoparticles of two or more selected from the concentration of the Is 1,000ppm to 10,000ppm, the particle size is 1-20nm, When the particle size of the metal nanoparticles is assumed to be 1 to 2 nm in the particle size of the metal nanoparticles, the concentration of the aluminum sheet may be used in any one of 10 ppm to 50 ppm and 100 ppm to 200 ppm. A method for producing an antibacterial aluminum coil fin material for heat exchange of an air conditioner coated with a UV coating containing nanoparticles of metal. The metal nanoparticles of claim 1 or 3, wherein the metal nanoparticles are mixed with the UV coating (Pt), gold (Au), silver (Ag), copper (Cu), and titanium dioxide (TiO _2). Prepared by physically pulverizing the metal of the metal or by electrical explosion, by separating ions or atoms through plasma treatment of the metal particles in a bulk target (target), and platinum (Pt) ), Metal salts and compounds containing gold (Au), silver (Ag), copper (Cu) or metal oxide salts of titanium dioxide (TiO ₂ ), including those prepared by purification, dissociation and ion reduction A method for producing an antimicrobial aluminum coil fin material for heat exchange of an air conditioner coated with a UV coating containing nanoparticles of metal. The method of claim 4, wherein the silver (Ag) nanoparticles of the metal nanoparticles of the metal salts and compounds as silver nitrate (AgNO ₃ ), silver perchlorate (AgClO ₄ ), silver chlorate (AgClo ₃ ), silver sulfate (Ag2SO ₄ ), A method for producing an antimicrobial aluminum coil fin material for heat exchange of an air conditioner coated with a UV coating containing nanoparticles of metal, characterized in that it is produced using silver acetate (CH3COOAg). The method of claim 4, wherein the silver (Ag) nanoparticles are prepared by extracting silver (Ag) of a metal by dissociating and ion-reducing metal salts and compounds containing a surfactant as a receptor and containing silver (Ag). , Prepared by dissociating metal salts and compounds containing silver (Ig) and ion-reducing to extract silver (Ag) of the metal and stabilizing with silica, zeolite or zirconium phosphate as a carrier. Metal nanoparticles, characterized in that the metal salt and the compound stabilizer of the compound is dissolved in water or non-aqueous solvent and purged with nitrogen and then irradiated with gamma rays. Method for manufacturing antibacterial aluminum coil fin material for heat exchange of air conditioner coated with UV coating. 5. The method of claim 4, which as said metal nanoparticles are silver nanoparticles are generated in the case of producing them are silver (Ag) from the compound (AgNO ₃₎ particles, if produced in compound (AgNO ₃₎ silver ions (Ag ⁺ ) counter ion is "nitrate group" ion "NO ₃ ^-" having the colloid on the pass and removed by vacuum distillation of the ion exchange resin is said to (Ag) particles are mixed in yubeuyi (UV coating) the aluminum fin A method of manufacturing an antimicrobial aluminum coil fin material for heat exchange of an air conditioner coated with a UV coating containing nanoparticles of metal, characterized by preventing oxidation, corrosion and yellowing of the coating coated on the surface of the ash. In the coating apparatus for coating a UV coating on the surface of the aluminum sheet prior to the punching process to form and cut the aluminum sheet supplied from the aluminum sheet roll to form an aluminum coil fin material for heat exchange, The lower coating roll and the support trolley are symmetrically installed so that the aluminum sheet supplied from the aluminum sheet roll passes. Under the lower coating roll UV coating container containing the UV (UV) paint is installed so that a part of the lower coating roll is locked, On the side of the lower coating roll is coated with a coating thickness adjustment bar to be coated on the lower surface of the aluminum sheet is buried only a certain amount of UV (UV) paint on the lower coating roll, At the rear of the lower coating roll, the upper coating roll and the support trolley through which the aluminum sheet passed between the lower coating roll and the support trolley are passed are installed. A coating thickness adjusting bar is installed at the side of the upper coating roll, and a UV paint supply roll connected to the upper coating roll is installed at an upper side thereof. A UV paint container is installed on the upper side of the UV paint supply roll, and UV coatings supplied from the lower part of the UV paint container are sequentially buried in the UV paint supply roll and the upper coating roll, and then on the upper surface of the aluminum sheet. Configured to form a UV paint coating, The UV (UV) paint is mixed with one or more metal nanoparticles selected from platinum (Pt), gold (Au), silver (Ag), copper (Cu), and titanium dioxide (TiO ₂ ). One of the urethane-based UV coating and acrylic UV coating, The coating thickness adjusting bar may be wound around a cylindrical roller attached to the end of the metal or polymer composite wire having a diameter of 0.5 to 1.2 μm at regular intervals, or 0.5 to 1.2 μm at a predetermined interval on the surface of the cylindrical roller. Coating device for coating the surface of the aluminum sheet for aluminum coil fin material for heat exchange with UV coating containing metal nanoparticles, characterized in that it is processed to have a height to bury the paint as much as the gap or embossed height of the diameter .

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