KR102314445B1 - Health friendly coating composition having excellent performance of preventing condensation and thermal insulation - Google Patents

Abstract

Disclosed is a health-friendly coating composition that prevents dew condensation occurring in an indoor living room, bedroom, etc. and can be manufactured from inexpensive raw materials as a coating composition having excellent thermal insulation performance. The present invention relates to 25 to 45 parts by weight of a binder resin, 1 to 15 parts by weight of a pigment, 1 to 15 parts by weight of a filler, 1 to 10 parts by weight of water, 10 to 30 parts by weight of hollow silica, 5 to 20 parts by weight of ceramic powder, and 0.1 parts by weight of airgel. To provide a coating composition comprising 5 parts by weight.

Description

Health friendly coating composition having excellent performance of preventing condensation and thermal insulation

The present invention relates to a coating composition, and more particularly, to a coating composition used in a building interior.

Recently, awareness of the importance of indoor air quality is increasing. Indoor air pollutants are more dangerous than outdoor pollutants because the probability of air pollutants reaching the lungs is 1,000 times higher than outdoors. In addition, in the case of an old building, cracks appear on the walls as the cement oxidizes, and through the cracks, various harmful substances such as mold are generated. Accordingly, indoor air quality management is being strengthened, and indoor air quality management is more important for the underprivileged.

On the other hand, due to the dew condensation occurring indoors, mold and bacteria are inhabited, which is a factor that deteriorates indoor air quality. In particular, it is necessary to prevent condensation and mold, citing mold 27.9%, moisture 15%, and odor 7.3% as inconvenience factors for basement residents.

Conventional products for preventing condensation and mold are mainly coating agents or paints for verandas, which have space limitations, and since they were mainly developed for verandas, it is impossible to finish the wallpaper on the surface. unsuitable In particular, condensation and mold occurring in vulnerable residential facilities such as basement floors occur a lot in indoor bedrooms, so it is necessary to develop a product made of inexpensive material as a health-friendly product suitable for this.

Korea Patent No. 1504098 discloses a coating for preventing condensation and mold composed of ceramic, resin, cypress, etc., but does not mention the exact construction method or specific effects of improving condensation and mold, so there are doubts about its practicality.

Korean Patent Registration No. 1742918 discloses an eco-friendly diatomaceous earth finishing material composition, but there is a problem of being vulnerable to dew condensation when a thickness of over a certain level is not secured with the diatomaceous earth finishing material.

Korea Patent No. 1450265 discloses a coating for anti-condensation composed of ceramic powder, calcium carbonate, and the like, but as an anti-condensation agent, the particle size is excessive, so it is particularly unsuitable for indoor bedroom use.

Korean Patent No. 1243163 discloses a coating-type insulation composition including an emulsion, glass hollow beads, etc., but has a problem of being unsuitable for indoor bedrooms using wallpaper.

An object of the present invention is to provide a health-friendly coating composition that can be manufactured from inexpensive raw materials as a coating composition that prevents dew condensation occurring in an indoor living room, bedroom, etc. and has excellent thermal insulation performance.

In order to solve the above problems, the present invention provides 25 to 45 parts by weight of a binder resin, 1 to 15 parts by weight of a pigment, 1 to 15 parts by weight of a filler, 1 to 10 parts by weight of water, 10 to 30 parts by weight of hollow silica, 5 parts by weight of ceramic powder. To provide a coating composition comprising 20 parts by weight and 0.1 to 5 parts by weight of airgel.

In addition, the ceramic powder should have a particle size of 1,000 to 9,000 mesh, and the form in the powder should be hollow, 50 to 80% by weight of illite, 10 to 40% by weight of sericite, 1 to 10% by weight of germanium, and guiyang It provides a coating composition characterized in that 1 to 10% by weight of stone is mixed.

In addition, the binder resin is a polyacrylic water dispersion resin, the pigment is titanium dioxide, the filler is aluminum hydroxide, the airgel provides a coating composition, characterized in that the airgel silica.

In addition, the composition provides a coating composition, characterized in that it further comprises 0.5 to 10 parts by weight of silica.

In addition, the composition further comprises 0.05 to 3 parts by weight of a wetting agent, 2 to 20 parts by weight of a drying retardant, 0.1 to 5 parts by weight of a dispersant, 0.1 to 5 parts by weight of an antifoaming agent, and 0.1 to 5 parts by weight of a pH adjuster. A coating composition is provided.

According to the present invention, as a coating composition that can be used in an indoor living room, bedroom, etc., hollow silica, ceramic powder of a specific composition, and airgel are included in a certain amount to prevent dew condensation while using inexpensive raw materials and to provide a coating composition having excellent thermal insulation performance. can

1 is a photograph showing the thermal insulation performance test process in a test example of the present invention;
2 is an official test report showing the condensation performance test result in the test example of the present invention;
3 and 4 are official test reports showing test results of heavy metals, VOCs and VACs in the test example of the present invention.

Hereinafter, the present invention will be described in detail through preferred embodiments. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, since the configuration of the embodiments described in the present specification is only the most preferred embodiment of the present invention and does not represent all the technical spirit of the present invention, various equivalents and modifications that can be substituted for them at the time of the present application It should be understood that there may be

As a result of repeated research to develop a health-friendly coating composition that can be manufactured from inexpensive raw materials as a coating composition that prevents dew condensation from occurring in indoor living rooms, bedrooms, etc. , it has been found that the above problems can be solved when the ceramic powder and airgel of a specific composition are included in a certain amount, and the present invention has been reached.

Accordingly, the present invention provides 25 to 45 parts by weight of a binder resin, 1 to 15 parts by weight of a pigment, 1 to 15 parts by weight of a filler, 1 to 10 parts by weight of water, 10 to 30 parts by weight of hollow silica, 5 to 20 parts by weight of ceramic powder, and Disclosed is a coating composition comprising 0.1 to 5 parts by weight of airgel.

The binder resin serves to prevent detachment of the powder raw material during coating using the final coating composition, and in the present invention, an aqueous acrylic emulsion type resin or an aqueous polyurethane resin may be used as a non-toxic resin.

The aqueous acrylic emulsion type resin is not particularly limited, and a polyacrylic water dispersion resin or an aqueous polyurethane resin generally used in the art may be used. The polyacrylic water-dispersion resin and the aqueous polyurethane resin may be water-dispersible resins containing 10 to 50% by weight or more, preferably 10 to 50% by weight of the acrylic copolymer and polyurethane, respectively, in terms of solid content.

The binder resin content is included in a relative relationship with other components 25 to 45 parts by weight, preferably 30 to 40 parts by weight may be included. When the content of the binder resin is less than 25 parts by weight, it is difficult to prevent desorption of the powder raw material, and when it exceeds 45 parts by weight, the anti-condensation and thermal insulation performance is deteriorated.

The pigment is a component for maintaining the color of the coating composition, and can be used without limitation as long as it is a material used as a pigment component in the art, but in the present invention, titanium dioxide in terms of anti-condensation and heat insulation performance through combination with other components (TiO ₂ ) may be preferably selected.

The titanium dioxide gives hiding and serves as a white pigment, and the particle size of titanium dioxide having an average diameter of 0.1 to 100 μm, preferably 1 to 10 μm may be used.

The pigment content may be included in 1 to 15 parts by weight in a relative relationship with other components, preferably 4 to 10 parts by weight. When the content of the pigment is less than 1 part by weight, it is difficult to realize the original function of the pigment, and when it exceeds 15 parts by weight, the dispersibility is lowered due to the specific gravity of the pigment.

The filler serves to fill the coating agent of the coating composition, and is a component that fills the pores of the pigment such as titanium dioxide.

As such a filler, a component used in the art may be used without limitation, for example, silver (Ag), copper (Cu), aluminum (Al), magnesium (Mg), silica (Si), zirconium (Zr), aluminum hydroxide. (Al(OH) ₃ ), magnesium oxide (MgO), aluminum oxide (Al ₂ O ₃ ), tin oxide (SnO), silicon carbide (SiC), nitride (Si ₃ N ₄ , AlN, BN), graphite, graphene Fins, CNTs, etc. may be used, and in the present invention, spherical aluminum hydroxide (Al(OH) ₃ ) may be preferably selected in terms of anti-condensation and thermal insulation performance through combination with other components.

In addition, the particle size of the filler may preferably be used in an average diameter of 0.05 to 50 μm, preferably 0.1 to 5 μm in terms of preventing condensation and insulating performance through uniform filling.

The filler content may be included in 1 to 15 parts by weight in a relative relationship with other components, preferably 4 to 10 parts by weight. When the filler content is less than 1 part by weight, uniform filling is difficult, and when it exceeds 15 parts by weight, the particles protrude on the surface after coating of the coating composition, thereby reducing thermal insulation properties.

The hollow silica is a spherical silica with an empty interior for improving thermal insulation performance in the final coating composition, and serves as a matting agent to reduce the gloss of the coating material surface with improved thermal insulation performance.

The particle size of the hollow silica may have an average diameter of 10 to 500 µm, preferably 50 to 200 µm, in terms of maximizing thermal insulation performance.

The hollow silica content may be included in 10 to 30 parts by weight in a relative relationship with other components, preferably 15 to 25 parts by weight. When the content of the hollow silica is less than 10 parts by weight, the degree of improvement in thermal insulation performance is insignificant, and when it exceeds 30 parts by weight, coatability and dryness of the final coating composition may be deteriorated.

The ceramic powder is a component for imparting an antibacterial function as well as improving the insulation performance of the final coating composition. In the present invention, a mixture composition of specific inorganic particles having a certain size is used from the viewpoint of maximizing the heat reflection effect, the heat insulation effect and the antibacterial effect. can That is, the mixed composition has a particle size of 1,000 to 9,000 mesh, and a ceramic powder in which 50 to 80% by weight of illite, 10 to 40% by weight of sericite, 1 to 10% by weight of germanium and 1 to 10% by weight of Guiyangseok are mixed. In this case, the ceramic powder of the mixed composition is pulverized during the manufacturing process, and at least one of the illite, sericite, germanium, and guiyangseok powder is preferably hollow. .

The preparation of the ceramic powder of the mixed composition is described in detail in Korean Patent Registration No. 1584789, and the present invention refers to the above patent only for the preparation of the ceramic powder of the mixed composition.

The ceramic powder content may be included in 5 to 20 parts by weight, preferably 8 to 17 parts by weight in a relative relationship with other components. When the content of the ceramic powder is less than 5 parts by weight, the degree of improvement in thermal insulation performance and antibacterial performance is insignificant, and when it exceeds 20 parts by weight, coatability and dryness of the final coating composition may be deteriorated.

The airgel is a component serving as a modifier for improving thermal insulation performance and controlling the adsorption and release of moisture in the final coating composition, and a hydrophilic airgel may be used.

As the airgel, for example, silica airgel, fumed silica, etc. may be used, but in the present invention, fine powder silica airgel may be used in terms of maximizing thermal insulation performance. The airgel may be prepared by a known method, for example, a sol-gel method.

The airgel content may be included in 0.1 to 5 parts by weight, preferably 0.3 to 3 parts by weight in a relative relationship with other components. When the airgel content is less than 0.1 parts by weight, the degree of improvement in thermal insulation performance is insignificant, and when it exceeds 5 parts by weight, the coatability and dryness of the final coating composition may be deteriorated.

In the present invention, in addition to the above components, silica may be further included to prevent dew condensation of the final coating composition and aid in thermal insulation performance.

The silica assists in anti-condensation performance by controlling moisture adsorption and release along with fluidity control of the coating composition, and also serves as a matting agent, and the particle size has an average particle diameter of 0.1 to 100 μm, preferably in terms of maximizing the anti-condensation performance. A thickness of 1 to 10 μm may be used.

The silica may be included in 0.5 to 10 parts by weight in a relative relationship with other components, preferably 1 to 7 parts by weight. When the silica content is less than 0.5 parts by weight, the degree of improvement in anti-condensation performance is insignificant, and when it exceeds 10 parts by weight, coatability and drying properties of the final coating composition may be deteriorated.

In the present invention, a wetting agent, a drying retardant, a dispersing agent, an antifoaming agent, and a pH adjusting agent may be further included as components other than the silica.

The wetting agent is a component that helps the coating agent settle and smoothes the coating agent through improvement of wettability and smoothness, and components commonly used in the art may be used, for example, polyether-modified polysiloxane-based wetting agent. Alternatively, an acetylene alcohol type wetting agent may be used.

The wetting agent may be included in a relative relationship with other components from 0.05 to 3 parts by weight, preferably from 0.1 to 1 part by weight, and when included within the content range, anti-condensation and heat insulation according to the purpose of the present invention It is advantageous for improving wettability and smoothness while maintaining performance.

The drying retarder is a component serving to facilitate workability by controlling the drying rate of the coating composition, and components commonly used in the art may be used, for example, propylene glycol may be used.

The drying retardant may be included in 2 to 20 parts by weight in a relative relationship with other components, preferably 5 to 15 parts by weight, and when included in the content range, preventing condensation and preventing condensation according to the purpose of the present invention It is advantageous for improving drying speed control performance while maintaining thermal insulation performance.

The dispersant is a component for improving the dispersibility by lowering the ionic polarity of the powder component in the coating composition, and a component commonly used in the art may be used, for example, an acrylic aqueous anionic salt may be used as the acrylic salt-based dispersant.

The dispersant may be included in 0.1 to 5 parts by weight in a relative relationship with other components, preferably 0.3 to 3 parts by weight, and when included in the content range, anti-condensation and heat insulation performance according to the purpose of the present invention It is advantageous to improve dispersion performance while maintaining

The antifoaming agent is a component that removes air bubbles in the coating agent before and after dispersion in the coating composition to keep the surface of the coating agent clean, and a component commonly used in the art may be used, for example, a silicone-based antifoaming agent may be used.

The antifoaming agent may be included in 0.1 to 5 parts by weight in a relative relationship with other components, preferably 0.3 to 3 parts by weight, and when included in the content range, anti-condensation and heat insulation performance according to the purpose of the present invention It is advantageous to improve the defoaming performance while maintaining the

The pH adjusting agent is a component for improving the dispersion performance by adjusting the pH when dispersing the pigment in the coating composition, and a component commonly used in the art may be used, for example, an amine-based pH adjusting agent may be used.

The pH adjusting agent may be included in 0.1 to 5 parts by weight in a relative relationship with other components, preferably 0.2 to 2 parts by weight, and when included in the content range, condensation prevention and insulation according to the purpose of the present invention It is advantageous for improving pH control performance while maintaining performance.

In the present invention, water may be included in an amount of 1 to 10 parts by weight, preferably 2 to 8 parts by weight, together with the above components.

The coating composition according to the present invention may be prepared using a commonly used method, for example, may be prepared by mixing the components in a predetermined content ratio and then stirring.

Hereinafter, the present invention will be described in more detail through specific examples.

Example

Binder resin (polyacrylic water dispersion resin, acrylic copolymer solid content 30 to 60 wt%) 1,131.8 g, pigment (titanium dioxide) 223.4 g, filler (spherical aluminum hydroxide, average diameter 1 to 3 μm) 239.3 g, water 133.6 g, hollow silica (average diameter 50 to 100 μm) 567.4 g, ceramic powder (65% by weight of illite, 25% by weight of sericite, 5% by weight of germanium and 5% by weight of Guiyangseok), particle size 5,000 to 7,500 mesh, hollow 399.0 g of ceramic powder component), airgel (silica airgel) 27.2 g, silica 104.1 g, wetting agent (polyether-modified polysiloxane, BYK) 9.6 g, drying retardant (propylene glycol) 300.6 g, dispersant (acrylic-based water-based) Anion salt, 44S, San Nofco) 30.2 g, antifoaming agent (silicone-based anti-foaming agent, NXZ, San Nofco) 23.3 g and pH adjuster (amine-based pH adjuster, H PLUS, Heerae) 17.7 g were mixed, and then, using a stirrer A final coating composition was prepared by stirring so that the powder components were sufficiently dispersed in the liquid phase.

test example

Condensation performance test, heavy metal, volatile organic compounds (VOCs) and volatile aromatic hydrocarbons (VOCs) tests, and thermal insulation performance tests were performed on the prepared coating composition by the following method, and the results are shown below. Tables 1 to 3 are shown.

[Test Methods]

(1) Condensation performance test

A dew condensation performance test was performed on the prepared coating composition according to the method specified in LH Professional Specification (32700):2011.

(2) Heavy metals, VOCs and VACs testing

For the prepared coating composition, Pb and Cd component content is measured based on IEC 62321-5:2013 standard, and Hg component content is measured based on IEC 62321-4:2013 standard, KS C IEC 62321:2009 Measure the content of Cr6+ components according to the standard, measure the VOCs content in accordance with KS M ISO 11890-2:2014 standard, and measure VACs-Toluene, VACs-Ethylbenzene, VACs-p according to ASTM D 3257:2006 standard -xylene, VACs-Isopropylbenzene, VACs-1,2,4-trimethylbenzene and VACs-1,2,4,5-tetramethylbenzene contents were measured.

(3) Thermal insulation performance test

A coated aluminum plate having a final thickness of 1.48 mm and 1.74 mm, respectively, was prepared by applying the prepared coating composition and a commercially available insulating paint (white paint) to an aluminum plate (thickness 0.97 mm), respectively. The coated aluminum plate is mounted on the upper surface of a cube chamber with a size of 30*30*30 cm in which a 200W light bulb is installed, and then the light bulb is heated for 7 minutes. The thermal insulation performance was tested by measuring the initial temperature and the temperature after 7 minutes (see FIG. 1).

Test Items Test result Test Methods Condensation Performance Test clear LH Professional Specifications (32700): 2011

Test Items unit Test result Test Methods Lead (Pb) mg/kg Non-detection (Detection Limit: 5) IEC 62321-5:2013 Cadmium (Cd) mg/kg Detection Limit: 1 IEC 62321-5:2013 Chromium (Cr ⁶⁺ ) mg/kg Detection Limit: 1 IEC 62321:2009 Mercury (Hg) mg/kg Detection Limit: 1 IEC 62321-4:2013 VOCs g/L 1.42 KS M ISO 11890-2:2014 VACs-Toluene % Non-detection (Detection Limit: 0.01) ASTM D 3257:2006 VACs-Ethylbenzene % Non-detection (Detection Limit: 0.01) ASTM D 3257:2006 VACs-p-xylene % Non-detection (Detection Limit: 0.01) ASTM D 3257:2006 VACs-Isopropylbenzene % Non-detection (Detection Limit: 0.01) ASTM D 3257:2006 VACs-1,2,4-trimethylbenzene % Non-detection (Detection Limit: 0.01) ASTM D 3257:2006 VACs-1,2,4,5-tetramethylbenzene % Non-detection (Detection Limit: 0.01) ASTM D 3257:2006

division Example Third-party insulation paint Initial temperature (℃) 26.5 26.5 After 7 minutes (°C) 55.6 55.4

Referring to Tables 1 to 3, as a cheap raw material according to the present invention as a coating composition, when hollow silica, ceramic powder of a specific composition, and airgel are included in a certain amount in binder resin, pigment and filler, there is no problem in dew condensation performance, It can be seen that it is possible to implement an equivalent level of thermal insulation compared to existing other companies' thermal insulation paints, and furthermore, it is possible to provide a health-friendly coating composition that does not cause problems with heavy metals, VOCs and VACs.

Among the test results, the condensation performance test result and the heavy metal, VOCs and VACs test results are results based on the official test report, and the condensation performance test results are shown in FIG. 2, and the heavy metal, VOCs and VACs test results are shown in FIGS. 3 and 4 shown in

A preferred embodiment of the present invention has been described in detail above. The description of the present invention is for illustrative purposes, and those skilled in the art to which the present invention pertains will understand that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention.

Accordingly, the scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning, scope, and equivalent concept of the claims are included in the scope of the present invention. should be interpreted

Claims (5)

30 to 40 parts by weight of binder resin, 4 to 10 parts by weight of pigment, 4 to 10 parts by weight of filler, 1 to 10 parts by weight of water, 15 to 25 parts by weight of hollow silica, 8 to 17 parts by weight of ceramic powder, and 0.3 to 3 parts by weight of airgel including wealth,
The ceramic powder has a particle size of 5,000 to 7,500 mesh, and 50 to 80% by weight of illite, 10 to 40% by weight of sericite, 1 to 10% by weight of germanium and 1 to 10% by weight of guiyangseok are mixed,
The binder resin is a polyacrylic water dispersion resin having an acrylic copolymer solid content of 30 to 60% by weight, the pigment is titanium dioxide, the filler is aluminum hydroxide having an average diameter of 1 to 3 μm, and the airgel is a silica airgel and the hollow silica has an average diameter of 50 to 100 μm,
The composition comprises 1 to 7 parts by weight of silica having an average particle size of 1 to 10 μm, 0.1 to 1 parts by weight of polyether-modified polysiloxane as a wetting agent, 5 to 15 parts by weight of propylene glycol as a drying retardant, and 0.3 parts by weight of an acrylic aqueous anionic salt as a dispersant. to 3 parts by weight, 0.3 to 3 parts by weight of a silicone-based anti-foaming agent as an antifoaming agent, and 0.2 to 2 parts by weight of an amine-based pH adjusting agent as a pH adjuster. delete delete delete delete

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