KR20220164977A - Method for manufacturing infrared reflective pigments and Amusement apparatus coated with infrared-blocking pigment - Google Patents

Abstract

The present invention relates to a method of manufacturing an infrared blocking paint and an amusement ride painted with an infrared blocking paint. A method for manufacturing an infrared blocking paint according to an embodiment of the present invention comprises: a stirring step of dispersing a pigment in a dispersion and then stirring the same to prepare a suspension; a coating step of further dispersing a metal oxide in the suspension and adding a metal salt to the suspension to coat the pigment with the metal oxide; a drying step of dehydrating the suspension, washing, drying, and screen-processing to produce an infrared blocking powder in powder form; and a mixing step of producing an infrared blocking paint by mixing the infrared blocking powder, a binder, a defoaming agent, and a dispersant.

Description

Method for manufacturing infrared blocking paint and play equipment painted with infrared blocking paint {Method for manufacturing infrared reflective pigments and Amusement apparatus coated with infrared-blocking pigment}

The present invention relates to a paint, and relates to a method for manufacturing an infrared blocking paint capable of blocking an infrared region included in sunlight, and a playground equipment painted with the infrared blocking paint.

Recently, as the risk of depletion of natural energy increases, movements to reduce energy consumption are becoming more active. As part of this movement, various attempts have been made to increase cooling and heating efficiency in indoor spaces such as buildings or vehicles.

The movement of heat occurs by one or more of conduction, radiation, and thermal transmission. Among these, radiation is the main cause of the increase in indoor temperature in summer as the directly radiated heat wave hits the surface of an object and causes molecular vibration to generate thermal energy. In fact, it is widely known that when solar radiation energy caused by direct sunlight in summer is blocked, the indoor temperature is lowered compared to the outdoor temperature and the cooling energy efficiency is increased.

Heat blocking means blocking radiant heat from sunlight. In general, a heat blocking member is used to increase cooling efficiency in summer by shielding radiant heat from the sun.

Republic of Korea Patent Publication No. 10-2012-0073753

An object of the present invention is to provide a method for manufacturing an infrared blocking paint capable of effectively blocking infrared rays.

The present invention is to provide a play equipment that can be easily used even in summer by being painted with an infrared blocking paint.

A method for manufacturing an infrared ray blocking paint according to an embodiment of the present invention includes a stirring step of dispersing a pigment in a dispersion and then stirring to prepare a suspension; a coating step of further dispersing a metal oxide in the suspension and adding a metal salt to the suspension to coat the pigment with the metal oxide; A drying step of dehydrating the suspension, washing it with water, drying it, and screening it to prepare a powdery infrared blocking powder; and a mixing step of preparing an infrared blocking paint by mixing the infrared blocking powder, the binder, the antifoaming agent, and the dispersing agent.

Here, the pigment is an infrared ray blocking pigment, and may be at least one of synthetic mica, natural mica, glass flake, iron oxide, titanium oxide, alumina, magnesium oxide, aluminum, calcium oxide, zinc oxide mica, and titanium mica.

Here, in the coating step, the type of the metal oxide may be selected according to a preset color of the infrared blocking paint, and the metal oxide may be titanium dioxide, cobalt, iron oxide, iron-cyanide complex (Fe4(Fe(CN)) 6) It may include at least one of 3), cobalt oxide alumina (CoAl2O4), and chromium oxide. In the coating step, at least one of indium tin oxide, aluminum zinc oxide, antimony tin oxide, and tungsten oxide may be used as the metal oxide. In this case, antimony tin oxide and tungsten oxide may be used as the metal oxide, and the antimony tin oxide and tungsten oxide may be in nanopowder or nanosol type.

Here, the mixing step may be to use a hybrid polyurethane resin as the binder, and the hybrid polyurethane resin includes 60% by weight of an OH group polyol, 25% by weight of isocyanate group MDI (Methylene diphenyl diisocyanate) or TDI (Toluene Diisocyanate), It can be produced by mixing 10% by weight of a solvent and 5% by weight of an amine.

According to one embodiment of the present invention, the amusement equipment can be manufactured by painting the surface with the infrared blocking paint manufactured according to the method for manufacturing the infrared blocking paint described above.

In addition, the solution to the above problem does not enumerate all the features of the present invention. Various features of the present invention and the advantages and effects thereof will be understood in more detail with reference to specific embodiments below.

According to the infrared blocking paint manufacturing method and the play equipment painted with the infrared blocking paint according to the embodiment of the present invention, it is possible to provide an infrared blocking paint with excellent aesthetics while providing an improved infrared blocking function.

According to the manufacturing method of the infrared blocking paint and the amusement equipment painted with the infrared blocking paint according to the embodiment of the present invention, since the infrared blocking paint is applied to the amusement equipment, it is possible to suppress the temperature rise of the amusement equipment even in summer. That is, it is possible for users to easily use the play equipment even in summer.

According to the manufacturing method of the infrared blocking paint and the amusement equipment painted with the infrared blocking paint according to the embodiment of the present invention, since the hybrid polyurethane resin is used as a binder, the adhesive strength, strength, durability, etc. can be improved compared to the prior art.

However, the effects that can be achieved by the infrared blocking paint manufacturing method and the amusement equipment painted with the infrared blocking paint according to embodiments of the present invention are not limited to those mentioned above, and other effects not mentioned are as follows From the description, it will be clear to those skilled in the art to which the present invention belongs.

1 is a flow chart showing a method for manufacturing an infrared ray blocking paint according to an embodiment of the present invention.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves.

In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes included in the spirit and technical scope of the present invention , it should be understood to include equivalents or substitutes.

1 is a flowchart showing a method for manufacturing an infrared blocking paint according to an embodiment of the present invention.

Referring to FIG. 1 , the method for manufacturing an infrared blocking paint according to an embodiment of the present invention may include a stirring step (S10), a coating step (S20), a drying step (S30), and a mixing step (S40).

Hereinafter, a method for manufacturing an infrared blocking paint according to an embodiment of the present invention will be described with reference to FIG. 1.

In the stirring step (S10), a suspension may be prepared by dispersing the pigment in the dispersion and then stirring. For example, a suspension may be prepared by dispersing an infrared ray blocking pigment in a dispersion in a mixing vessel and then stirring at 200 to 400 rpm at a temperature of 10 to 30 °C. Here, the pigment may have a preset color, and depending on the embodiment, an infrared ray blocking pigment may be used as the pigment or a mixture of the pigment and the infrared ray blocking pigment may be used.

The infrared blocking pigment included in the pigment may be synthetic mica (mica), natural mica, glass flake, iron oxide, titanium oxide, alumina, magnesium oxide, aluminum, calcium oxide, zinc oxide mica, titanium mica, etc. In this case, infrared blocking The pigment may have a color of black, blue or green.

On the other hand, if the size of the particle size of the pigment is too small, the same color with the same refractive index cannot be displayed by scattering, etc., and if the size of the particle size is too large, the surface area to be coated increases, making it difficult to form a coating layer for color implementation. have. Therefore, the diameter or thickness of the pigment can be limited. For example, the diameter of the pigment may be limited to 1 to 40 μm and the thickness to be limited to 0.1 μm to 10 μm.

In the coating step (S20), the metal oxide may be further dispersed in the suspension, and a metal salt may be added to the suspension to coat the pigment with the metal oxide. That is, in order to increase the infrared ray blocking performance of the pigment, an inorganic pigment having a refractive index of 1.5 or more may be coated on the pigment. For example, a metal oxide with a high refractive index can be coated on a low refractive index infrared blocking pigment. it is possible to implement

Specifically, the metal oxide coated on the pigment may be titanium dioxide, iron oxide, cobalt, cobalt oxide alumina, iron-cyanate (Fe4(Fe(CN)6)3), aluminum cobalt oxide (CoAl2O4), chromium oxide, and the like.

Here, the type of metal oxide may be selected according to the preset color of the infrared blocking paint. For example, cobalt oxide alumina can implement blue, chromium oxide can implement green, and iron oxide and cobalt can implement black, respectively.

Depending on embodiments, transparent metal oxides such as indium tin oxide, aluminum zinc oxide, antimony tin oxide, and tungsten oxide may be used as the metal oxide, and at this time, antimony tin oxide and tungsten oxide may be mixed and used in a certain ratio. That is, by coating the pigment with a transparent metal oxide having an infrared blocking function, an infrared blocking paint having various colors may be produced. Here, the transparent metal oxides may be nanopowder having a diameter of 10 nm to 1 μm, or may have a nanosol type.

Thereafter, a metal salt may be added to the suspension in which the metal oxide is dumped to coat the pigment with the metal oxide, and at this time, the coating of the metal oxide may be induced by adjusting the pH in the suspension. Here, the metal salt to be added may be a compound containing at least one of calcium (Ca), aluminum (Al), zinc (Zn), barium (Ba), and magnesium (Mg).

The pH in the suspension can be adjusted using dilute hydrochloric acid (HCl) or sodium hydroxide (NaOH). That is, by adding a diluent into the suspension, the pH of the suspension can be maintained in the range of 1 to 9. At this time, when the pH value is less than 1, it is difficult for the metal oxide particles to be coated on the pigment, and when the pH value exceeds 9, the coating layer of the pigment is not uniform due to excessive aggregation of the metal and may have an irregular size and shape.

In addition, when the thickness of the metal oxide is thin, it is difficult to coat it, and when the thickness is thick, the efficiency improvement of total solar reflectance (TSR) due to light scattering may not be greatly affected. Therefore, when the metal oxide is coated on the pigment, the coating may be performed so that the thickness of the metal oxide is 0.05 to 5 when the thickness of the pigment is 100.

In the drying step (S30), the suspension is dehydrated, washed with water, dried, and screened to prepare an infrared blocking powder in powder form. For example, it can be washed with water using primary purified water or an alcohol-based solution, dried at a temperature of 80 to 150 degrees for 4 to 8 hours, and then screened with a mesh to produce powdery infrared blocking powder. can do. In this case, it is possible to finally manufacture an infrared ray blocking powder coated with a metal oxide.

This infrared blocking powder has an infrared ray blocking function with a solar reflectance of at least 40%, including infrared rays having a wavelength range of 280 to 2500 nm in sunlight, and has various colors such as black, blue, and green depending on the material of the coated metal oxide. may have interference colors. Here, the white infrared blocking powder may include a metal oxide layer made of titanium oxide, and the red infrared blocking powder may include a metal oxide layer made of iron oxide.

In the mixing step (S40), an infrared blocking paint may be prepared by mixing an infrared blocking powder, a binder, an antifoaming agent, and a dispersing agent.

Here, the binder may be an acrylic resin, an acrylic-silicone copolymer, a silicone resin, a water-soluble polyurethane resin, an acrylic-urethane copolymer, an acrylic-silicone-urethane copolymer, or the like. Depending on the embodiment, it is also possible to use a hybrid polyurethane resin as a binder. In this case, the hybrid polyurethane resin may be prepared by mixing 60% by weight of OH group polyol, 25% by weight of isocyanate group MDI (Methylene diphenyl diisocyanate) or TDI (Toluene Diisocyanate), 10% by weight solvent, and 5% by weight of amine. . Here, the hybrid polyurethane resin is produced by combining a urethane reaction with a urea reaction, and can improve adhesion, strength, durability, and the like compared to conventional binders.

The antifoaming agent may be a commonly used antifoaming agent such as a mineral oil-based or silicone-based antifoaming agent, and the antifoaming agent may perform a function of removing unnecessary or harmful air bubbles in the paint.

The dispersant may be a general dispersant used in preparing paints, and is a group consisting of formalin condensate of naphthalene sulfonate, formalin condensate of melamine sulfonate, polycarboxylic acid compound, polycarboxylic acid ether, aromatic amino sulfonic acid polymer and metal salt of lignin sulfonic acid It may be one or more materials selected from

In addition, additives such as freeze stabilizers, thickeners, pH adjusters, and antisettling agents used in conventional paints may be added to improve paint properties.

On the other hand, according to one embodiment of the present invention, it is possible to perform painting on amusement equipment using the infrared blocking paint manufactured according to the manufacturing method of the infrared blocking paint. Here, the play equipment may be installed in a playground, such as a slide, a swing, or a seesaw.

First, each frame constituting the play equipment can be manufactured, where the frame can be made of a material such as wood or steel. Here, in the case of a frame made of steel, it may be powder coated with an infrared blocking paint or the like. For example, by using the electrostatic painting technique, powder powder such as infrared blocking paint can be retained at around 180 to 220 degrees for 20 minutes. In this case, the first painting is performed on the surface of the frame through a dissolution process in which the powder is gradually melted and the phase is changed to a liquid. Thereafter, the second painting may be performed by curing the first painted frame in the atmosphere. When powder coating is applied, corrosion resistance, adhesiveness, durability, etc. can be improved compared to liquid paint, and a coating film with a uniform thickness can be obtained. When the powder coating is completed, the frame can be assembled to complete the play equipment, and it can be installed in an installation location such as a playground. Depending on the embodiment, it is also possible to pre-specify an area that the user's body frequently touches, such as a handle held by the user's hand, in the amusement equipment, and to paint the corresponding area with an infrared blocking paint.

The present invention is not limited by the foregoing embodiments and accompanying drawings. It will be clear to those skilled in the art that the components according to the present invention can be substituted, modified, and changed without departing from the technical spirit of the present invention.

S10: stirring step S20: coating step
S30: Drying step S40: Mixing step

Claims (9)

A stirring step of dispersing the pigment in the dispersion and then stirring to prepare a suspension;
a coating step of further dispersing a metal oxide in the suspension and adding a metal salt to the suspension to coat the pigment with the metal oxide;
A drying step of dehydrating the suspension, washing it with water, drying it, and screening it to prepare a powdery infrared blocking powder; and
A method for manufacturing an infrared blocking paint comprising a mixing step of preparing an infrared blocking paint by mixing the infrared blocking powder, a binder, an antifoaming agent and a dispersant.
The method of claim 1, wherein the pigment
Preparation of infrared ray blocking paint, characterized in that it is at least one of synthetic mica, natural mica, glass flakes, iron oxide, titanium oxide, alumina, magnesium oxide, aluminum, calcium oxide, zinc oxide mica, and titanium mica as an infrared ray blocking pigment Way.
The method of claim 1, wherein the coating step
Infrared blocking paint manufacturing method characterized in that the type of the metal oxide is selected according to the color of the infrared blocking paint set in advance.
The method of claim 3, wherein the metal oxide
A method for producing an infrared ray blocking paint comprising at least one of titanium dioxide, cobalt, iron oxide, iron-cyan complex salt (Fe4(Fe(CN)6)3), cobalt alumina oxide (CoAl2O4) and chromium oxide.
The method of claim 1, wherein the coating step
Infrared blocking paint manufacturing method, characterized in that using at least one of indium tin oxide, aluminum zinc oxide, antimony tin oxide and tungsten oxide as the metal oxide.
The method of claim 5, wherein the coating step
Antimony tin oxide and tungsten oxide are used as the metal oxide, and the antimony tin oxide and tungsten oxide are in the form of nanopowder or nanosol type.
The method of claim 1, wherein the mixing step
Infrared blocking paint manufacturing method, characterized in that using a hybrid polyurethane resin as the binder.
The method of claim 7, wherein the hybrid polyurethane resin
OH group polyol 60% by weight, isocyanate group MDI (Methylene diphenyl diisocyanate) or TDI (Toluene Diisocyanate) 25% by weight, solvent 10% by weight and amine 5% by weight characterized in that produced by mixing infrared ray blocking paint manufacturing method.
An amusement device manufactured by painting the surface with the infrared blocking paint manufactured according to the manufacturing method of any one of claims 1 to 8.

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