KR101847604B1 - Aqueous, heat reflective, heat insulation and thermal insulation paint with excellent UV blocking capacity and method for production thereof - Google Patents

Abstract

The paint set of the present invention is provided with an undercoating paint excellent in thermal insulation property, an upside paint excellent in stain resistance, weather resistance, and heat insulation property, and has a heat insulation and heat insulation function when the paints are applied together, It has long-term weatherability and is excellent in overall aesthetic effect. In addition, the paint set of the present invention is safe as environment friendly water-soluble emulsion paint, free from contamination, and can be very thin to reduce the load of the building.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-based heat insulating and heat insulating coating material having excellent ultraviolet shielding performance and a method of manufacturing the same,

The present invention relates to a water-based heat insulating and heat insulating coating material excellent in ultraviolet ray shielding performance and a method for producing the same. More specifically, the present invention relates to a waterborne coating material having excellent heat insulating action and a water- And a method of manufacturing the same.

Energy consumption of buildings accounts for more than 30% of total energy consumption in each country. The buildings' protection structures (indoor / outdoor walls, rooftops, doors) in each country are wasting about 2/3 of the heating and cooling energy because of insufficient insulation and insulation performance.

As an exterior wall paint, thermal insulation and heat insulation are important elements of paints. In winter, it needs warming effect. In summer, it needs more heat insulation. If it has only one function of warming or insulation, it can not be an efficient exterior wall paint.

The outer wall paint must have excellent resistance to pollution and weathering as well as thermal insulation and heat insulation. It is good to exhibit pollution and weatherability at the same time. If the weathering resistance is good and the stain resistance is poor, the aesthetic effect on the building can not be satisfied because the paint is aged very quickly even if the paint is not dropped for a long time. In addition, if the paint has a good stain resistance, but weather resistance is poor, even a beautiful outer coat paint will aged and not last long.

Therefore, it is necessary to combine the four elements of warmth, insulation, stain resistance and weatherability as the exterior wall paint of the building, so that the building can save energy and be beautiful and long lasting.

On the other hand, the paint can be divided into a water-soluble paint and an oil-based paint, wherein the water-based paint is diluted with water and the oil-based paint is diluted with oil. Solvent-borne paints are attracting attention as eco-friendly paints because they cause serious environmental problems because they emit volatile organic solvents during painting. The water-soluble paint is used as a paint for interior and wall paints because it is a water diluent and it has no bad smell due to fire, toxicity and solvent, and has high anti-clouding property and high water vapor permeability.

Korean Patent Registration No. 10-1625511 (Registered on Feb. 26, 2014) discloses a process for producing a polyurethane obtained by reacting a polyol, a pozzolan mineral or a blast furnace with a water formed by passing ground water through a powder obtained by pulverizing a nano- 15 to 30% by weight of a pigment comprising at least two substances selected from the group consisting of 55 to 70% by weight of a water-soluble acrylic polymer, iron oxide, talc, barium sulfate, silica, kaolin, rutile, 5 to 10% by weight of a diffusion film forming agent comprising one kind selected from phenylalanine, L-5-hydroxytryptophan, 3-amino-5-phenyl-pentanoic acid and 3-amino- 0.1 to 1% by weight of a viscosity control agent consisting of methyl ethyl ketone or n-butyl acetate, 0.5 to 2% by weight of a flow inhibitor consisting of dimer acid or 1-propanol-2-methyl, % 1 composition; 10 to 18% by weight of a curing agent comprising at least one substance selected from the group consisting of polyisocyanate, 60 to 75% by weight of at least one substance selected from the group consisting of meta-xylene diamine, isophorone diamine and diethylene triamine, 6.3 to 10% A second composition comprising 5.5 to 16% by weight of a viscosity modifier comprising at least one material selected from the group consisting of naphtha, naphtha, methyl naptha, methyl ethyl ketone, and xylene, Water-soluble coating material which is obtained by further mixing 80 to 120 parts by weight of an inorganic zinc powder with respect to 100 parts by weight of a water-soluble organic solvent mixed in a ratio of 1: 1 to 1.2. In Korean Patent No. 10-1296880 (registered on Aug. 31, 2013), silicon acrylic resin: 35 to 37%, titanium dioxide: 19 to 20%, talc: 22 to 24%, vacuum ceramic powder: A flame-retardant heat-resistant function consisting of 10 to 15% of a porous titanium oxide, 2 to 5% of a porous titanium aerogel, 0.05 to 0.1% of a defoaming agent, 0.1 to 0.5% of a dispersant, 0.05 to 0.2% of a preservative, A heat insulating coating composition is described.

An object of the present invention is to develop and provide a coating material which is excellent in warmth, heat insulation, stain resistance and weather resistance, has a good aesthetic effect after application, and is environmentally friendly.

In order to achieve the above object, the present invention provides a paint set comprising a paint for undergarment and an overlay paint,

Wherein the paint for undercoat is composed of water, an acrylic emulsion, a heat insulating material, a titanium powder, a hard calcium carbonate powder and an auxiliary agent, and the paint for phase conditioning is water, an aqueous fluororesin emulsion, a silicone acrylic emulsion, Powder, a light calcium carbonate powder and an auxiliary agent,

The heat insulating material is any one selected from the group consisting of vacuum glass grains, borosilicate vacuum glass grains, vacuum glass fibers or a mixture of at least one of the foregoing materials,

Wherein the nano-oxide insulating particles are any one selected from the group consisting of nanosized silicon dioxide, rutile-type thermo-nano-dioxide, nano-oxide zinc oxide,

The auxiliary agent is at least one selected from the group consisting of a defoaming agent, a dispersing agent, a wetting agent, a pesticide, a fungicide / fungicide, a pH adjusting agent, a film forming agent, a viscosity controlling agent, Provide a paint set.

On the other hand, in the water-based heat-insulating heat-insulating coating material set of the present invention, the undercoat paint preferably contains 15 to 35% by weight of water, 25 to 40% by weight of acrylic emulsion, 5 to 15% 5 to 15% by weight of a titanium powder, 1 to 20% by weight of a hard calcium carbonate powder and 2 to 10% by weight of an auxiliary agent. The paint prepared as described above has a low heat conduction coefficient and thus has excellent heat retaining performance and is suitable as a paint for undercoats.

The heat insulating material may be selected from vacuum glass grains, vacuum glass grains of borosilicate glass, vacuum glass fibers or a mixture of at least one of them, and preferably has a particle diameter of 20 to 150 탆. The heat conduction coefficient is lowered by adding the heat insulating material.

On the other hand, in the water heat-insulated and heat-insulating, heat-set coating material set of the present invention, the above phase-change coating material preferably contains 25 to 65% by weight of water, 10 to 40% by weight of an aqueous fluororesin emulsion, 10 to 40% by weight of nano-oxide insulating particles, 1 to 15% by weight of nano-oxide insulating particles, 5 to 15% by weight of titanium powder, 1 to 15% by weight of hard calcium carbonate powder and 2 to 10% The paint prepared as described above is excellent in heat insulating performance, stain resistance and weather resistance, and is suitable as a top coat paint. In addition, when contaminants come in contact with the surface, the contaminants are effectively rejected as drops of water fall on the leaves of the lotus leaves, so that the walls can be kept clean and dry for a long period of time.

The aqueous fluororesin emulsion may be any one selected from the group consisting of a Teflon emulsion, a copolymer emulsion of Teflon and hexafluoropropylene, a copolymer emulsion of Teflon and ethylene, or a mixture of at least one thereof, and has a particle size of 50 To 500 m. The aqueous fluororesin emulsion and the silicone acryl emulsion are combined with each other to form a fluorosilicone coating film on the surface of the coating to have good resistance to contamination and long-term weatherability.

On the other hand, in the water-based heat-insulating and heat insulating coating material set of the present invention, the aqueous fluororesin emulsion is preferably a Teflon emulsion, a copolymer emulsion of Teflon and hexafluoropropylene, a copolymer emulsion of Teflon and ethylene, And mixtures thereof.

The main chain of the 'fluorine resin' is a bond such as a polyolefin comprising a C-C bond, which is a synthetic resin having a structure in which a part or all of the hydrogen of the polyolefin is replaced by a fluorine atom. There are eight kinds of fluorine resins available on the market, of which polytetrafluoroethylene (PTFE), which is 70%, is representative. As the aqueous fluororesin, any one selected from a Teflon emulsion, a copolymer emulsion of Teflon and hexafluoropropylene, a copolymer emulsion of Teflon and ethylene, or a mixture of at least one of them is used.

'Teflon' is also called PTFE and is a trade name of polytetrafluoroetylene. It has heat resistance that can withstand long-term use at 260 占 폚, and is excellent in chemical resistance, electrical insulation, high frequency characteristics, non-adhesive property, low friction coefficient and flame retardancy.

'Copolymer of Teflon and Hexafluoropropylene' is also called FEP and can be injection molded, extruded, and has excellent heat resistance, light transmittance and weather resistance.

'Copolymer of Teflon and Ethylene' is also called ETFE and has excellent abrasion resistance, is widely used for chemical applications, and has the highest strength among fluorine resins.

The silicone acrylic emulsion may be prepared by reacting a silicone acrylic resin with an acrylic monomer and using 3-methacryloxy-propyltrimethoxysilane (MPTS) as the silicone acrylic resin, Acrylate such as styrene, n-butyl acrylate (BA), methylmethacrylate (MMA), n-butylmethacrylate (BMA), dimethylaminoethyl methacrylate A copolymer of dimethylaminoethyl methacrylate (DMEMA) and a copolymer of methyl methacrylate and n-butyl methacrylate is preferably used. The silicone acrylic emulsion can be prepared to produce a coating having enhanced high-temperature and high weatherability.

The nano-oxide insulating particles may be any one selected from the group consisting of nanosized silicon dioxide, rutile-based thermo-nano-dioxide, nano-oxide zinc oxide, nano-oxide aluminum oxide and mixtures of at least one thereof. Mu m. By adding the nano-oxide insulating particles to the coating composition, most of ultraviolet rays and infrared rays of the sunlight are reflected and copied to the atmosphere again to perform an insulating action. In addition, since the nano-oxide insulating particles are uniformly arranged on the surface of the fluorine ceramic coating layer, the stain resistance of the coating layer is further strengthened, so that a strong drainage layer can be formed. In addition, it is chemically stable by adding nanometer size additive, and excellent anti-ultraviolet ray performance and moisture-proofing performance, and the hardness and flexibility of the coating film are enhanced by the special function of liquid bubbling, so that aging resistance and stain resistance are improved, As much as possible.

Among the above-mentioned nano-oxide insulating particles, nanosized silicon dioxide has an absorption rate of at least 70% for ultraviolet rays having a wavelength of 400 nm or less and infrared rays having a wavelength of 800 nm or less, and titanium nano dioxide and nano- It can be absorbed to exert an adiabatic action.

The present invention relates to a method for producing a paint set comprising a lower paint and an upper paint,

The undercoating paint comprises,

(A) adding water to a vessel and adding an auxiliary agent while stirring, and dispersing to prepare a mixed liquid; (B) adding and dispersing titanium powder and light calcium carbonate powder to the mixed solution to prepare a paste; And a step (c) of adding and mixing an acrylic emulsion to the paste, stirring the mixture while adding a heat insulating material, adding water, and further stirring the mixture; and (c)

The above-

(A) adding water to a vessel and adding an auxiliary agent while stirring to prepare a mixed liquid; (B) adding and dispersing titanium powder, nano-oxide insulating particles and light calcium carbonate powder to the mixed solution to prepare a paste; And a step (C) of adding and mixing an aqueous fluororesin emulsion and a silicone acrylic emulsion to the paste, followed by addition of water and further stirring (C). A method of manufacturing a heat insulating paint set is provided.

Hereinafter, a description will be made in detail about a paint for undercoating and a method for manufacturing a paint for topcoat.

< Underwater  Method for producing paint>

The coating material for undercoat of the present invention preferably contains 15 to 35% by weight of water, 25 to 40% by weight of acrylic emulsion, 5 to 15% by weight of heat insulating material, 5 to 15% by weight of titanium powder, 1 to 20% by weight and an auxiliary agent in an amount of 2 to 10% by weight, and can be produced through the following steps (a) to (c).

Further, after passing through the following steps (a) to (c), the undercoating paint can be finally produced by filtration.

The conditions for each step are described in detail below.

Step (a): Water is added to the vessel Stirring  Adding an auxiliary agent, and dispersing to prepare a mixed solution

In this step, water is added to the vessel, auxiliary agent is added while stirring, and dispersed to prepare a mixed liquid. Only 70 to 85% by weight of the total amount of water added to the paint for undercoating is added and the auxiliary agent is added And then dispersed at a rotation speed of 500 to 800 times / minute for 10 to 20 minutes to prepare a mixed solution.

The adjuvant is at least one selected from the group consisting of a defoaming agent, a dispersing agent, a wetting agent, a pomegranate, a fungicide / fungicide, a pH adjusting agent, a film forming agent, a viscosity controlling agent or an agitating agent.

Step (b): Titanium powder and light calcium carbonate powder are added to the mixed solution and dispersed Paste  Steps to manufacture

In this step, titanium powder and hard calcium carbonate powder are added to the mixed solution and dispersed to prepare a paste. Titanium powder and hard calcium carbonate powder are added to the mixed solution, and the mixture is stirred at a rotation speed of 1200 to 1500 times / It is advisable to prepare the paste by high-speed dispersion for 20 minutes.

Step (c): In paste  acryl Emulsion  Stirring the mixture while adding a warming material, adding water, and further stirring

In this step, an acrylic emulsion is added to the paste, and the mixture is stirred while a warming material is added. Then, water is added, and the mixture is further stirred. An acryl emulsion is added to the paste, and the mixture is rotated at a speed of 200 to 300 revolutions per minute (15 to 25% by weight of the total amount of water to be added for preparing the undercoat paint) was added thereto while stirring at a low speed, and the mixture was stirred at 200 to 300 times / Min for 10 to 20 minutes.

The heat insulating material is any one selected from the group consisting of vacuum glass grains, vacuum glass grains of borosilicate glass, vacuum glass fibers or a mixture of at least one of them, and preferably has a particle diameter of 20 to 150 탆.

< Award  Method for producing paint>

The phase-change coating material of the present invention comprises 25 to 65% by weight of water, 10 to 40% by weight of an aqueous fluororesin emulsion, 10 to 40% by weight of a silicone acryl emulsion, 1 to 15% by weight of a nano- 5 to 15% by weight of a titanium powder, 1 to 15% by weight of a hard calcium carbonate powder and 2 to 10% by weight of an auxiliary agent and can be produced through the following steps (A) to (C).

Further, after performing the following steps (A) to (C), the undercoating paint can be finally produced by filtration.

The conditions for each step are described in detail below.

Step (A): Water is added to the vessel Stirring  Adding an auxiliary agent to prepare a mixed solution

In this step, water is added to the vessel and the auxiliary agent is added thereto while stirring to prepare a mixed solution. Water is added to the vessel in an amount of 80 to 90% by weight based on the total amount of water added to the coating film for application to the vessel, And then dispersed at a rotation speed of 500 to 800 times / minute for 10 to 20 minutes to prepare a mixed solution.

The adjuvant is at least one selected from the group consisting of a defoaming agent, a dispersing agent, a wetting agent, a pessarying agent, a fungicide / fungicide, a pH adjusting agent, a film forming agent, a viscosity adjusting agent or a rheological agent.

Step (B): Titanium powder, nano-oxide insulating particles and light calcium carbonate powder are added to and dispersed in the mixed solution Paste  Steps to manufacture

In this step, titanium powder, nano-oxide adiabatic particles and hard calcium carbonate powder are added to the mixed solution to prepare a paste, and titanium powder, nano-oxide adiabatic particles and hard calcium carbonate powder are added to the mixture, The paste is preferably dispersed at a high speed for 10 to 20 minutes at a speed of 1,500 revolutions per minute.

Wherein the nano-oxide insulating particles are any one selected from the group consisting of nanosized silicon dioxide, rutile-based thermo-nano-dioxide, nano-oxide zinc oxide, nano-oxide aluminum oxide and mixtures of at least one thereof, It is good to use.

Step (C): In paste  Mercury Fluorine resin emulsion , Silicone acryl Emulsion  After adding and mixing, water was added Stirring  step

In this step, an aqueous fluororesin emulsion and a silicone acrylic emulsion are added to the paste, followed by mixing with water, followed by further stirring. An aqueous fluororesin emulsion and a silicone acrylic emulsion are added to the paste, (Water of 10 to 20% by weight based on the total amount of water added to the paint for phase-in) is added to the mixture and the mixture is stirred at a rotation rate of 200 to 300 times / It is better to further stir at low speed for 20 minutes.

The aqueous fluororesin emulsion may be selected from the group consisting of a Teflon emulsion, a copolymer emulsion of Teflon and hexafluoropropylene, a copolymer emulsion of Teflon and ethylene, or a mixture of at least one thereof, Mu m.

The silicone acrylic emulsion is obtained by reacting a silicone acrylic resin with an acrylic monomer and using 3-methacryloxy-propyltrimethoxysilane (MPTS) as the silicone acrylic resin, (Meth) acrylates, such as styrene, n-butyl acrylate, methyl methacrylate (MMA), n-butyl methacrylate (BMA), dimethylaminoethyl methacrylate dimethylaminoethyl methacrylate, DMEMA) and a copolymer of methyl methacrylate and n-butyl methacrylate.

Meanwhile, in the present invention, 'emulsion' is an oil-in-water emulsion (O / W), which is well diluted in water.

The antifoaming agent, dispersing agent, wetting agent, pessary agent, antifungal / fungicide, pH adjusting agent, film forming agent, viscosity controlling agent and agitator used in the present invention can be used in the present invention.

In the meantime, the water-based heat-insulating heat-insulating coating material set of the present invention is composed of an undercoat paint and an overcoat paint, and the undercoat paint and topcoat paint of the present invention must be used together, , Pollution resistance and long-term weatherability can be expected. That is, use of a paint for top coat having excellent stain resistance, weather resistance, and heat insulation on a paint for undergarment excellent in thermal insulation can be used to further maximize the effects of the present invention.

Further, the water-based heat insulating and heat insulating coating material set of the present invention can be used not only for buildings but also for all structures requiring insulation such as water tanks, oil tanks, thermal energy transportation conduits, refrigerated warehouses, containers, and the like.

It is preferable that the water-based heat-reflective heat-insulating and heat-insulating paint set of the present invention is applied under the conditions of not less than 5 degrees Celsius and not more than 85% of humidity, and not applied before rain or rain. In addition, it is possible to apply both spray, roller, and brush, but spraying method provides the best construction effect.

The paint set of the present invention is composed of an undercoat paint and an overcoat paint, and has a thermal insulation and heat insulation function when the paints are applied together, and also has excellent paint resistance and long-term weatherability, thus providing a total aesthetic effect. In addition, the paint set of the present invention is safe as environment friendly water-soluble emulsion paint, free from contamination, and can be very thin to reduce the load of the building.

1 is a test result of the heat insulating performance of the paint for phase-in painting among the paint set of the present invention. The right side is the box painted with the topcoat paint of the present invention, and the left side is the untreated box.
2 is a far infrared ray test report of a paint for in-phase painting in the paint set of the present invention.
Fig. 3 shows the far infrared ray emissivity test results of the paint for in-phase painting among the paint sets of the present invention.
4 is a result of far infrared ray radiant energy test of the paint for phase in the paint set of the present invention.
FIG. 5 is a VOC emission test report of a paint for use in a paint set of the present invention. FIG.

Hereinafter, the present invention will be described in more detail in the following Examples. However, the scope of the present invention is not limited to the following embodiments, and includes modifications of equivalent technical ideas.

[ Example  1: Preparation of the paint set of the present invention]

(1) Manufacture of paints for undercoats

5% by weight of an adjuvant consisting of defoamer, dispersant, wetting agent, oil spreader, fungicide / fungicide, pH adjuster, film-forming agent, viscosity regulator and agitation agent was added to the production container at 21 wt% And the mixture was dispersed at a rotation speed of revolutions per minute for 15 minutes to prepare a mixed solution.

Thereafter, 10% by weight of titanium powder and 13% by weight of hard calcium carbonate powder were added to the mixed solution, and the paste was dispersed at a high speed for 15 minutes at a rotation speed of 1300 revolutions / minute to prepare a paste.

Thereafter, 32% by weight of an acrylic emulsion was added to the paste, and the mixture was uniformly mixed at a low speed of rotation at a speed of 250 revolutions / min. Thereafter, a heat insulating material 10 9 wt.% Of water was added while gradually stirring the mixture at a low speed, and the mixture was stirred at a low speed for 15 minutes at a rotation speed of 250 revolutions / minute to prepare an undercoat.

(2) Manufacture of paint for top coat

28 wt% of water was added to a production container and 5 wt% of an adjuvant composed of a defoaming agent, a dispersing agent, a wetting agent, a pessary agent, a fungicide / fungicide, a pH adjusting agent, a film forming agent, And dispersed at a rotation speed of 600 rpm for 15 minutes to prepare a mixed solution.

Thereafter, 5 wt% of nano-oxide insulating particles as a mixture of 10 wt% of titanium powder, silicon nano-dioxide, a mixture of rutile titanium oxide, nano-oxide zinc oxide and nano-aluminum oxide, 5 wt% of hard calcium carbonate powder By weight was added and the paste was dispersed at a high speed of 1400 revolutions / minute for 15 minutes to prepare a paste.

Thereafter, 20% by weight of an aqueous fluororesin emulsion and 20% by weight of a silicone acryl emulsion, which are a mixture of a Teflon emulsion, a copolymer emulsion of Teflon and hexafluoropropylene, a copolymer emulsion of Teflon and ethylene, The mixture was homogeneously mixed at a rotation speed of revolutions per minute and uniformly mixed. Then, 7% by weight of water was added and the mixture was further stirred at a low speed for 15 minutes at a rotation speed of 250 revolutions / minute to prepare a phase change coating material.

The silicone acrylic emulsion may be prepared by mixing 3-methacryloxy-propyltrimethoxysilane (MPTS), methyl methacrylate (MMA), n-butyl methacrylate (BMA) Were mixed at a molar ratio of 1: 1 and then reacted with an acrylic monomer prepared by synthesis at 30 ° C.

[ Comparative Example  1: Manufacture of paint set]

A paint set was prepared in the same manner as in Example 1, except that the nano-oxide insulating particles were not used in the paint for phase in the paint set of Example 1 above.

[ Comparative Example  2: Manufacture of paint set]

A paint set was prepared in the same manner as in Example 1, except that the aqueous fluororesin emulsion was not used in the paint for phase in the paint set of Example 1 above.

[ Experimental Example  1: Confirmation of insulation performance of the paint set of the present invention]

In this Experimental Example, the heat insulating performance of the paint for phase in the paint set of Example 1 was confirmed.

The temperature was compared between the adiabatic test box coated with the topcoat paint of the present invention and the adiabatic test box not heated for a certain period of time with far infrared rays. The reason why the far-infrared ray is shining is to test the adiabatic effect under the same condition as the natural condition of the sun ray because the sun ray radiates heat and raises the temperature because it is a far-infrared ray of the sun ray.

As a result of the test, as shown in FIG. 1, after 9 minutes, the box (right side) painted with the painting paint of the present invention was 31.3 ° C, whereas the box (left side) painted with the painting paint of the present invention was 47.2 ° C, The temperature difference was found to be 15.9 ° C (Fig. 1). Also, the temperature difference was kept constant after 9 minutes. 1 is a test result of the heat insulating performance of the paint for phase-in painting among the paint set of the present invention. The right side is the box painted with the topcoat paint of the present invention, and the left side is the untreated box.

From the above results, it can be confirmed that the heat-curing paint of the present invention has excellent heat insulation performance.

[ Experimental Example  2: Confirmation of weatherability and stain resistance of the paint set of the present invention]

In this experimental example, the weather resistance and stain resistance of the paint set prepared in Example 1 and Comparative Examples 1 and 2 were confirmed.

 The undercoat paint was first applied to both steel plates, and then an overcoating paint was applied thereon and cured to prepare a coating film having a thickness of 200 μm.

The flexural resistance, heat resistance, water resistance, solvent resistance, alkali resistance, acid resistance and stain resistance of the coating films prepared in Example 1 and Comparative Examples 1 and 2 were measured and the results are shown in Table 1 below.

The flexural resistance was measured according to JIS K 5600-5-1.

The coating film was heated for 3 hours in a hot-air circulating heating furnace where the heat resistance was maintained at 180 占 폚, and the yellowing degree of the coating film was visually observed.

The water resistance was evaluated by observing the state of the coating film after immersing the coating film in water at 20 캜 for 7 days.

The solvent resistance was evaluated by observing the appearance such as gloss drop and occurrence of blister after immersing in xylene solution for 24 hours.

The sample of the coating film was immersed for 120 hours in an alkaline aqueous 5% NaOH solution and visually observed for gloss, blister, and the like.

The acid resistance was evaluated by observing the appearance such as gloss, blister and the like after immersing the specimen of the coating film for 120 hours by using 5% H ₂ SO ₄ aqueous solution.

The stain resistance was evaluated by using the oil magic, scraping the specimen of the coating film, leaving it at room temperature for 1 day, washing it with soapy water, and then observing its appearance.

division Example 1 Comparative Example 1 Comparative Example 2 Flexibility Good usually Bad Heat resistance Good Bad Bad Water resistance Good Bad Bad Solvent resistance Good usually usually Alkali resistance Good Good usually Acid resistance Good Good usually Salt resistance No trace Residual occurrence Residual occurrence

As shown in Table 1, it was confirmed that the paint set of the present invention is more excellent in flex resistance, heat resistance, water resistance, solvent resistance, alkali resistance, acid resistance and stain resistance than the paint sets of Comparative Examples 1 and 2.

[ Experimental Example  3: Confirmation of far-infrared emission of the paint set of the present invention]

In this Experimental Example, the degree of far-infrared emission of the paint for phase-in of the paint set of the present invention prepared in Example 1 was confirmed.

The results were as shown in Figs. 2 to 4 and Table 2 as a result of commissioning by Korea Institute of Construction & Living Environment Test.

Test Items unit Test Methods Test result Remarks Far-infrared emissivity
(Measurement temperature: 40 占 폚, measurement wavelength: 5 占 퐉 to 20 占 퐉) - KCL-FIR-1005: 2011 0.888
(22.3 ± 0.1) ° C
(24.6 ± 0.3)% RH Far-infrared radiation energy
(Measurement temperature: 40 占 폚, measurement wavelength: 5 占 퐉 to 20 占 퐉) W / m ² KCL-FIR-1005: 2011 3.58 × 10 ² (22.3 ± 0.1) ° C
(24.6 ± 0.3)% RH

As a result of the confirmation, it was confirmed that the paint for phase-inversion of the present invention emitted far-infrared rays. FIG. 2 is a far infrared ray test report of a paint for phase in the paint set of the present invention, FIG. 3 is a result of far infrared ray emissivity test of the paint for phase in the paint set of the present invention, This is the result of far infrared radiation energy test.

[ Experimental Example  4: Confirmation of the reflectance of solar radiation of the paint set of the present invention]

 In this Experimental Example, the degree of reflectance of solar radiation of the painting paint for phase in the paint set of the present invention prepared in Example 1 was confirmed.

Test methods and results are shown in Table 3 below.

Test Items unit Test Methods Test result Remarks Solar reflectance
(300 nm to 780 nm) % JIS K 5602: 2008 93.4
Solar reflectance
(780 nm to 2500 nm ^% JIS K 5602: 2008 87.8 Solar reflectance
(300 nm to 2500 nm ^% JIS K 5602: 2008 90.8

As can be seen from the above Table 3, it can be confirmed that the phase coating paint of the present invention has excellent solar radiation reflectance at a wide wavelength of 300 to 2500 nm.

[ Experimental Example  5: The paint set of the present invention Volatile organic compounds ( VOCs ) Release confirmation]

 In this Experimental Example, the degree of emission of volatile organic compounds (VOCs) from the paint of the present invention in the paint set of the present invention prepared in Example 1 was confirmed.

The results were as shown in Table 4 and FIG. 5 below.

Test Items unit Sample classification Results Test Methods Quantification of VOCs g / L - 0.53 KS M ISO 11890-2: 2014 (GC / FID)

* GC / FID: Gas chromatograph flame ionization detector

As described above, the paint for in-phase painting of the present invention was measured to be 0.53 g / L, which is 35 g / L or less, which is the VOCs standard value, and it was confirmed that it is a very environmentally friendly paint (FIG.

FIG. 5 is a VOC emission test report of a paint for use in a paint set of the present invention. FIG.

[ Experimental Example  6: Confirmation of insulation and insulation performance of the paint set of the present invention]

In this experimental example, the thermal insulation and thermal insulation performance of the paint set of the present invention prepared in Example 1 was examined.

In the case of application example 1, only the paint for undercoating was applied, for application example 2, only thermal paint was applied, and in case of application example 3, thermal insulation and insulation performance were confirmed by applying paint for undercoating and paint for topcoat.

The insulation performance was evaluated in the same manner as in Experimental Example 1, except that a coating was applied to a general cup according to Application Examples 1 to 3, and then water was immersed in water at 100 ° C for 1 hour. The results are shown in Table 5 below.

division
Insulation performance Insulation performance After 1 hour After 9 minutes Regular cup 20 ℃ 48 ° C Construction example 1
(Paints for undercoating only) 70 ℃ 42 ° C Construction example 2
(Paints for top coat only) 50 ℃ 31 C Construction example 3
(Paint + paint for painting) 72 ℃ 31.5 DEG C

As a result, in the case of Application Example 3 in which all of the undercoating and topcoating paints of the present invention were excellently exerted, both the insulating performance and the heat insulating performance were excellently exhibited. However, in the case of Example 1 coated with only the undercoating paint, And it was confirmed that the heat insulation performance was normal although the construction example 2 in which only the paint for phase coating was applied was excellent.

As described above, it was found that both the undercoating paint and the topcoating paint of the present invention should be used, but both the heat retaining performance and the heat insulating performance can be exerted after the application.

Claims (16)

A paint set comprising a lower paint and an upper paint,
The undercoating paint is composed of water, an acrylic emulsion, a heat insulating material, a titanium powder, a hard calcium carbonate powder and an auxiliary agent,
The phase change coating material is composed of water, an aqueous fluororesin emulsion, a silicone acryl emulsion, a nano-oxide heat insulating particle, a titanium powder, a hard calcium carbonate powder and an auxiliary agent,
The heat insulating material is any one selected from the group consisting of vacuum glass grains, borosilicate vacuum glass grains, vacuum glass fibers or a mixture of at least one of the foregoing materials,
Wherein the nano-oxide insulating particles are any one selected from the group consisting of nanosized silicon dioxide, rutile-type thermo-nano-dioxide, nano-oxide zinc oxide,
The adjuvant may be at least one selected from the group consisting of a defoaming agent, a dispersing agent, a wetting agent, a pomegranate, a fungicide / fungicide, a pH adjusting agent, a film forming agent,
Wherein said aqueous fluororesin emulsion is any one selected from the group consisting of Teflon emulsion, copolymer emulsion of Teflon and hexafluoropropylene, copolymer emulsion of Teflon and ethylene, or a mixture of at least one of these. Water-repellent, heat-resistant thermal insulation paint set with excellent performance.
The method according to claim 1,
The undercoating paint comprises,
15 to 35% by weight of water, 25 to 40% by weight of acrylic emulsion, 5 to 15% by weight of heat insulating material, 5 to 15% by weight of titanium powder, 1 to 20% by weight of hard calcium carbonate powder, To 10% by weight based on the total weight of the composition.
The method according to claim 1,
The above-
Wherein the water-based fluororesin emulsion is 10 to 40% by weight, the silicone acrylic emulsion is 10 to 40% by weight, the nano-oxide insulating particles are 1 to 15% by weight, the titanium powder is 5 to 15% by weight, 1 to 15% by weight of a hard calcium carbonate powder and 2 to 10% by weight of an auxiliary agent.
delete The method according to claim 1,
The silicone acryl emulsion may contain,
3-methacryloxy-propyltrimethoxysilane (MPTS), which is a silicone acrylic resin, and 3-methacryloxypropyltrimethoxysilane
(Meth) acrylates, such as styrene, n-butyl acrylate, methyl methacrylate (MMA), n-butyl methacrylate (BMA), dimethylaminoethyl methacrylate dimethylaminoethyl methacrylate (DMEMA), and a copolymer of methyl methacrylate and n-butyl methacrylate. The water-based heat-reflective insulating and heat-insulating coating material set.
The method according to claim 1,
The heat-
And having a particle diameter of 20 to 150 占 퐉.
The method according to claim 1,
The aqueous fluororesin emulsion may contain,
And a particle size of 50 to 500 占 퐉.
The method according to claim 1,
The nano-
And a particle diameter of 1 to 100 占 퐉.
A method for producing a paint set comprising a lower paint and an upper paint,
The undercoating paint comprises,
(A) adding water to a vessel and adding an auxiliary agent while stirring, and dispersing to prepare a mixed liquid;
(B) adding and dispersing titanium powder and light calcium carbonate powder to the mixed solution to prepare a paste; And
(C) adding and stirring an acrylic emulsion to the paste, stirring the mixture while adding a thermal insulating material, and then adding water and further stirring the mixture; and
The above-
(A) adding water to a vessel and adding an auxiliary agent while stirring to prepare a mixed liquid;
(B) adding and dispersing titanium powder, nano-oxide insulating particles and light calcium carbonate powder to the mixed solution to prepare a paste; And
(C) adding and mixing an aqueous fluororesin emulsion and a silicone acrylic emulsion to the paste, and then adding water and further stirring;
Wherein the aqueous fluororesin emulsion of step (C) is selected from the group consisting of a Teflon emulsion, a copolymer emulsion of Teflon and hexafluoropropylene, a copolymer emulsion of Teflon and ethylene, or a mixture of at least one thereof Wherein the water-insoluble heat-insulating and heat-insulating coating material is a thermosetting resin.
10. The method of claim 9,
The heat insulating material of step (c)
Wherein the waterproofing material is one selected from the group consisting of vacuum glass grains, vacuum glass grains of borosilicate glass, vacuum glass fibers or a mixture of at least one of the foregoing.
10. The method of claim 9,
The nano-oxide insulating particles of the step (B)
Wherein the waterproofing material is any one selected from the group consisting of silicon dioxide, silicon dioxide, silicon dioxide, silicon dioxide, silicon dioxide, silicon dioxide, silicon dioxide, silicon dioxide, &Lt; / RTI &gt;
delete 10. The method of claim 9,
The silicone acryl emulsion may contain,
3-methacryloxy-propyltrimethoxysilane (MPTS), which is a silicone acrylic resin, and 3-methacryloxypropyltrimethoxysilane
(Meth) acrylates, such as styrene, n-butyl acrylate, methyl methacrylate (MMA), n-butyl methacrylate (BMA), dimethylaminoethyl methacrylate dimethylaminoethyl methacrylate (DMEMA), and a copolymer of methyl methacrylate and n-butyl methacrylate. The water-based heat-reflective insulating and heat-insulating coating material &Lt; / RTI &gt;
10. The method of claim 9,
The adjuvant of step (a) or step (A)
Wherein at least one selected from the group consisting of an antifoaming agent, a dispersing agent, a wetting agent, a pest controlling agent, a fungicide / fungicide, a pH adjusting agent, a film forming agent, a viscosity controlling agent or an anti- Way.
10. The method of claim 9,
The undercoating paint comprises,
15 to 35% by weight of water, 25 to 40% by weight of acrylic emulsion, 5 to 15% by weight of heat insulating material, 5 to 15% by weight of titanium powder, 1 to 20% by weight of hard calcium carbonate powder, To 10% by weight based on 100% by weight of the total amount of the thermosetting resin.
10. The method of claim 9,
The above-
Wherein the water-based fluororesin emulsion is 10 to 40% by weight, the silicone acrylic emulsion is 10 to 40% by weight, the nano-oxide insulating particles are 1 to 15% by weight, the titanium powder is 5 to 15% by weight, 1 to 15% by weight of hard calcium carbonate powder, and 2 to 10% by weight of an auxiliary agent, based on the total weight of the water-based thermal insulation insulating coating composition.

Images