KR101746739B1 - Environmentally friendly fire retardant coatings and methods for their preparation - Google Patents

Abstract

Because the difficulty of developing the technology, the present invention applies the coating solution using a small amount of the inorganic flame retardant, which is safe to human body, by application of the surface coating technology, which had been reluctant to develop in the developed countries so far, so that the human body safety and environmental pollution can be minimized And a method for manufacturing the same.
In order to achieve the above object, the present invention provides a flame-retardant coating composition comprising a urethane emulsion resin, an ethylene vinyl acetate emulsion resin, an acrylic silicone emulsion resin, an acrylic emulsion resin, 39 to 49% by weight of an aqueous resin composed of at least one selected from the group consisting of an acrylic emulsion resin, a vinyl acrylic resin and a potassium silicate inorganic resin, or a mixture of two or more thereof; a styrene precursor, Diethylbenzene, acetophenone, ethylanthraquinone, ethylbenzene sulfonic acid, propylene oxide, alpha-methylbenzyl alcohol, and the like. 16 to 20% by weight of ethylbenzene used as a chemical intermediate for production; a group in which two methyl groups are bonded to a benzene ring 9 to 11% by weight of xylene, which is an aromatic hydrocarbon and is composed of an isomer of ortho-xylene, meta-xylene and para-xylene; hydrogen of benzene 0.1 to 0.3% by weight of toluene which is a compound in which one atom is substituted with a methyl group; aluminum hydroxide, magnesium hydroxide, cerium oxide, antimony oxide, And 25 to 30% by weight of an inorganic flame retardant composed of at least one selected from the group consisting of silicon oxide, tartaric acid zinc, molybdates, guanidine compounds and zirconium, the inorganic flame retardant to 100 parts by weight of titanium dioxide (TiO ₂₎ 50% by weight, silicon dioxide (SiO ₂₎ 40 wt%, zinc oxide (ZnO), and the photocatalyst 5 parts by weight was added consisting of 10% by weight of oxide with respect to, the number of modulus resin The glass transition temperature is -5 And ~30 ℃, the film forming temperature is characterized by consisting of a 0 ℃ ~25 ℃.
According to another aspect of the present invention, there is provided a method for manufacturing a flame-retardant paint, comprising the steps of: preparing an emulsion resin, an ethylene vinyl acetate emulsion resin, an acrylic silicone emulsion resin, 39 to 49% by weight of an aqueous resin composed of at least one selected from the group consisting of acrylic emulsion resin, vinyl acrylic resin, and potassium silicate inorganic resin or a mixture of two or more thereof; , Resin solvents, diethylbenzene, acetophenone, ethylanthraquinone, ethylbenzene sulfonic acid, propylene oxide, alpha-methylbenzyl alcohol (alpha-methylbenzyl alcohol) methylbenzyl alcohol); 16 to 20% by weight of ethylbenzene which is used as a chemical intermediate in the production of two methyl groups 9 to 11% by weight of xylene, which is an aromatic hydrocarbon having a combined structure and is composed of an isomer of ortho-xylene, meta-xylene and para-xylene; 0.1 to 0.3% by weight of toluene which is a compound in which one hydrogen atom of benzene is substituted with a methyl group; aluminum hydroxide, magnesium hydroxide, cerium oxide, antimony oxide, 25 to 30% by weight of an inorganic flame retardant composed of at least one or two or more selected from silicon oxide, tartaric acid zinc, molybdates, guanidine compounds and zirconium And 5 parts by weight of a photocatalyst composed of 50% by weight of titanium dioxide (TiO ₂ ), 40% by weight of silicon dioxide (SiO ₂ ) and 10% by weight of zinc oxide (ZnO) is added to 100 parts by weight of the inorganic flame- Glass of sexual resin The transition temperature is in the range of -5 占 폚 to 30 占 폚, and the film forming temperature is 0 占 폚 to 25 占 폚.

Description

FIELD OF THE INVENTION [0001] The present invention relates to fire retardant coatings and methods for their preparation,

The present invention relates to a flame-retardant paint and a method for producing the same, and more particularly, to a flame-retardant paint and a method for producing the same, which are applied to a coating solution containing a small amount of an inorganic flame retardant and a photocatalyst.

Since the late 1960s, research on the development of flame retardant coatings has been initiated to protect building materials from fire accompanied by a large-scale construction boom, centered on developed countries.

Early studies of this period focused on the development of materials with excellent flame retardancy that do not take into account environmental pollution or human health hazards.

However, recent data on the severity of environmental pollution and human health due to the use of flame retardant materials by environmental protection groups have been frequently announced, and the use range and use regulation of flame retardant materials have been strengthened around the world.

For this reason, recent studies on the development of flame retardant coatings in advanced countries focus on developing products that emphasize the environmental aspects such as low flammability, low toxicity, low corrosiveness and low flammability and human stability. In order to enhance competitiveness in developed countries, it is necessary to develop environmentally friendly and human-resistant flame-retardant coatings and flame-retardant coatings that can respond to such a trend in the domestic market.

Accordingly, the present invention aims at the development of environmentally friendly flame retardant coatings based on inorganic flame retardants devoid of a bromine-based / halogen-based flame retardant which has a low emission of volatile organic compounds and whose use regulations are strengthened globally, , Wood, various plastics, electric wires, etc. It is expected that it can be applied for environmental improvement by mixing with photocatalyst paint.

In other words, the flame retardant coating technology that coats flame retardant material on the surface of the material is a flame retardant coating technology that gives flame retardancy by coating the surface of the material with a flame retardant material coated with a coating liquid after the processing of the material is completed. .

In addition, this flame retardant coating technique uses a small amount of flame-retardant material (10 to 20% of the amount of the material when the coating liquid is added) compared with the compounding technique of adding a large amount of flame-retardant material, Environment-friendly clean technology.

For this reason, some advanced countries such as the United States, Europe, and Japan, which have severe environmental regulations, use surface coating technology. However, due to the difficulty of technology development, they have not succeeded in commercialization until now.

Patent No. 10-0446558 (Registered: Aug. 23, 2004) Patent No. 10-0880524 (Registered on Jan. 09, 2009.)

Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it has been found out that, due to the difficulty of technology development, the coating solution using a small amount of inorganic flame retardant, which is safe to human body, The present invention provides a flame-retardant paint and a method for manufacturing the flame-retardant paint, which can ensure human safety and minimize environmental pollution by applying a photocatalyst to a coating and coating.

In order to achieve the above object, the present invention provides a flame-retardant coating composition comprising a urethane emulsion resin, an ethylene vinyl acetate emulsion resin, an acrylic silicone emulsion resin, an acrylic emulsion resin, 39 to 49% by weight of an aqueous resin composed of at least one selected from the group consisting of an acrylic emulsion resin, a vinyl acrylic resin and a potassium silicate inorganic resin, or a mixture of two or more thereof; a styrene precursor, Diethylbenzene, acetophenone, ethylanthraquinone, ethylbenzene sulfonic acid, propylene oxide, alpha-methylbenzyl alcohol, and the like. 16 to 20% by weight of ethylbenzene used as a chemical intermediate for production; a group in which two methyl groups are bonded to a benzene ring 9 to 11% by weight of xylene, which is an aromatic hydrocarbon and is composed of an isomer of ortho-xylene, meta-xylene and para-xylene; hydrogen of benzene 0.1 to 0.3% by weight of toluene which is a compound in which one atom is substituted with a methyl group; aluminum hydroxide, magnesium hydroxide, cerium oxide, antimony oxide, And 25 to 30% by weight of an inorganic flame retardant composed of at least one selected from the group consisting of silicon oxide, tartaric acid zinc, molybdates, guanidine compounds and zirconium, the inorganic flame retardant to 100 parts by weight of titanium dioxide (TiO ₂₎ 50% by weight, silicon dioxide (SiO ₂₎ 40 wt%, zinc oxide (ZnO), and the photocatalyst 5 parts by weight was added consisting of 10% by weight of oxide with respect to, the number of modulus resin The glass transition temperature is -5 And ~30 ℃, the film forming temperature is characterized by consisting of a 0 ℃ ~25 ℃.

According to another aspect of the present invention, there is provided a method for manufacturing a flame-retardant paint, comprising the steps of: preparing an emulsion resin, an ethylene vinyl acetate emulsion resin, an acrylic silicone emulsion resin, 39 to 49% by weight of an aqueous resin composed of at least one selected from the group consisting of acrylic emulsion resin, vinyl acrylic resin, and potassium silicate inorganic resin or a mixture of two or more thereof; , Resin solvents, diethylbenzene, acetophenone, ethylanthraquinone, ethylbenzene sulfonic acid, propylene oxide, alpha-methylbenzyl alcohol (alpha-methylbenzyl alcohol) methylbenzyl alcohol); 16 to 20% by weight of ethylbenzene which is used as a chemical intermediate in the production of two methyl groups 9 to 11% by weight of xylene, which is an aromatic hydrocarbon having a combined structure and is composed of an isomer of ortho-xylene, meta-xylene and para-xylene; 0.1 to 0.3% by weight of toluene which is a compound in which one hydrogen atom of benzene is substituted with a methyl group; aluminum hydroxide, magnesium hydroxide, cerium oxide, antimony oxide, 25 to 30% by weight of an inorganic flame retardant composed of at least one or two or more selected from silicon oxide, tartaric acid zinc, molybdates, guanidine compounds and zirconium And 5 parts by weight of a photocatalyst composed of 50% by weight of titanium dioxide (TiO ₂ ), 40% by weight of silicon dioxide (SiO ₂ ) and 10% by weight of zinc oxide (ZnO) is added to 100 parts by weight of the inorganic flame- Glass of sexual resin The transition temperature is in the range of -5 占 폚 to 30 占 폚, and the film forming temperature is 0 占 폚 to 25 占 폚.

INDUSTRIAL APPLICABILITY As described above, the flame-retardant paint and the method for producing the same according to the present invention have the following effects.

First, since the present invention is composed of an aqueous resin, ethylbenzene, xylene, toluene and an inorganic flame retardant, it is excellent in water resistance, excellent in adhesion to a synthetic resin and in flexibility, prevents fire of a structure against sudden fire in a facility By delays, various facilities can be safely protected and the damage can be minimized.

Second, by using an aqueous resin, the present invention can be used as an environment-friendly paint by reducing the odor-free good working environment and environmental pollution.

Third, since the present invention does not include a halogen compound by using an inorganic flame retardant, it can protect human life from toxic gas and dioxin in case of fire.

Fourth, the present invention has an excellent effect in removing NOx and SOx toxic gases generated in a fire by using a photocatalyst.

Hereinafter, the present invention will be described in detail.

The flame retardant coating according to the present invention comprises 39 to 49% by weight of an aqueous resin; 16 to 20% by weight of ethylbenzene; 9 to 11% by weight of xylene; 0.1 to 0.3% by weight of toluene (Toluene); And 25 to 30% by weight of an inorganic flame retardant.

That is, the flame retardant paint according to the present invention is composed of an aqueous resin, ethylbenzene, xylene, toluene and an inorganic flame retardant.

Here, the aqueous resin may be selected from the group consisting of a urethane emulsion resin, an ethylene vinyl acetate emulsion resin, an acrylic silicone emulsion resin, an acrylic emulsion resin, Acrylic resin (Vinyl acrylic resin), and potassium silicate inorganic resin (Potassium silic).

That is, the aqueous resin may be selected from the group consisting of a urethane emulsion resin, an ethylene vinyl acetate emulsion resin, an acrylic silicone emulsion resin, an acrylic emulsion resin, Acrylic resin (Vinyl acrylic resin), potassium silicate inorganic resin (Potassium silic), and the aqueous resin is excellent in durability such as chemical resistance, weather resistance, flexibility and excellent water resistance do.

In addition, the aqueous resin is well dried in a humid place such as an underground cavity, and there is no cracking or peeling of the coating film due to moisture even after drying, and the inner surface of the cable made of PVC material has good adhesion and excellent flexibility .

The glass transition temperature of such an aqueous resin is from -5 ° C to 30 ° C and the film forming temperature is from 0 ° C to 25 ° C.

In particular, the content of the aqueous resin is preferably 39 wt% to 49 wt% with respect to the entire flame retardant paint, and when the content of the aqueous resin is less than 39 wt%, the water resistance, bending property, When the content of the resin is more than 49% by weight, the flame retardant performance deteriorates.

On the other hand, the ethylbenzene is an aromatic hydrocarbon organic matter.

In particular, the ethylbenzene is used for the production of synthetic rubbers, solvents, constituents of automobiles and aviation fuels, and cellulose acetate.

The ethylbenzene is mainly used as a precursor of styrene, a resin solvent, diethylbenzene, acetophenone, ethylanthraquinone, ethylbenzene sulfonic acid, propylene oxide, , And alpha-methylbenzyl alcohol. It is also a component of gasoline that can not be recovered.

In particular, the content of ethylbenzene is preferably 16 to 20% by weight based on the entire flame-retardant paint.

The xylene is an aromatic hydrocarbon having a structure in which two methyl groups are bonded to a benzene ring. Xylene is a colorless liquid with a sweet smell and very high flammability. There are three isomers: ortho-xylene, meta-xylene, and para-xylene.

On the other hand, the above toluene is a colorless liquid of a compound in which one hydrogen atom of benzene is substituted with a methyl group.

It is made by washing the diesel oil obtained by carbonizing the coal with sulfuric acid and then rectifying it or by removing hydrogen from methylcyclohexane. It is an important compound in organic synthetic chemistry.

Also known as methylbenzene. The formula C ₇ H ₈ . It is a colorless liquid with a peculiar smell and has a molecular weight of 92.14, a melting point of -95 ° C, a boiling point of 110.8 ° C and a specific gravity of 0.87 (15 ° C). It does not dissolve in water, but it mixes with most organic solvent such as ethanol, ether, benzene at an arbitrary ratio.

It is an important compound in organic synthetic chemistry. It is used as a raw material for synthesis of many materials and has a wide range of uses as a solvent. In particular, toluene is preferably used in an amount of 0.1 to 0.3% by weight based on the total amount of the flame-retardant paint.

The inorganic flame retardant may be selected from the group consisting of aluminum hydroxide, magnesium hydroxide, cerium oxide, antimony oxide, silicon oxide, tartaric acid zinc, One or two or more inorganic flame retardants selected from molybdates, guanidine compounds, and zirconium are used.

The above-mentioned inorganic flame retardant is a mixture of a flammable gas diluted by an inert gas during combustion and a by-product generated by decomposition of an inorganic compound by heat to react with the resin to form a film on the surface of the resin, Together with cooling of the material and generation of pyrolysis products by endothermic reaction, and stability at high temperature.

The content of the inorganic flame retardant is preferably 25 to 30% by weight based on the entire flame retardant paint. When the content of the inorganic flame retardant is less than 25% by weight, the flame retardant performance is deteriorated. When the content of the inorganic flame retardant is more than 30% The workability is deteriorated and the flexibility is poor.

On the other hand, 5 parts by weight of the photocatalyst is added to 100 parts by weight of the inorganic flame retardant.

The reason for adding the photocatalyst to the inorganic flame retardant is that the removal efficiency of the photocatalyst is high in volatile organic compounds (VOCs), nitrogen oxides (NOx), sulfur oxides (SOx), fine dusts,

Here, the photocatalyst is composed of at least one selected from the group consisting of titanium dioxide (TiO ₂ ), zinc oxide (ZnO), cadmium sulfide (CdS), and zirconium (ZrO ₂ )

In particular, the photocatalyst is titanium dioxide (TiO _2), zinc oxide (ZnO), cadmium sulfide (CdS), zirconium (ZrO _2), vanadium oxide (V ₂ O _3), tungsten (WO ₃₎ as perop Perovskite - Type Composite Metal Oxide (SrTiO ₃ ), and the like.

In contrast, zinc oxide (ZnO) and cadmium sulfide (CdS), which have excellent effects on the decomposition of trichlorethylene and tetrachlorethylene, can be used as a substitute for titanium dioxide (TiO2) The catalyst itself is decomposed by light to generate harmful zinc (Zn) and cadmium (Cd) ions.

In addition, the titanium dioxide (TiO2) is decomposed by oxidation of all organic matter into carbon dioxide and water, but tungsten (WO ₃₎ has good efficiency as a photocatalyst for a specific material, otherwise efficiency of titanium dioxide (TiO ₂₎ is not as good as for The area that can be used is very limited.

Particularly, the photocatalyst is composed of 50% by weight of titanium dioxide (TiO ₂ ), 40% by weight of silicon dioxide (SiO ₂ ) and 10% by weight of zinc oxide (ZnO).

That is, a photocatalyst that exhibits a complex function such as antibacterial, deodorization, decomposition of air and water pollutants, far-infrared radiation, and ultraviolet ray shielding is manufactured into fine particles having a size of several tens of nanometers, It can be applied to the industrial field and real life to improve the function sustainability, heat resistance and stability.

The flame retardant paint according to the present invention having the above-described constitution is composed of an aqueous resin, ethylbenzene, xylene, toluene, and an inorganic flame retardant so that it has good water resistance, excellent adhesion to synthetic resin and flexibility, By preventing or delaying the fire of structures against fire, various facilities can be safely protected and minimized, and by using water-based resin, it is possible to reduce the odor-free working environment and environmental pollution, By using an inorganic flame retardant and a photocatalyst, it does not contain a halogen compound, so it can protect human life from toxic gas and dioxin in case of fire. Particularly, by using the photocatalyst, there is an excellent effect in removing NOx and SOx poisonous gas generated in a fire.

Hereinafter, the test for the flame-retardant paint according to the present invention having the above-described constitution will be described.

* Test Evaluation 1

The flame retardant paint of the present invention was applied to a GFRC panel stiffener developed by the present inventor once, and the flame retardant paint was once applied to it, and this test report was obtained by asking the ordering party to the test certificate.

Test items: GFRC panel reinforcement

Testability: Performance evaluation according to flame retardancy

Test method: Flame retardant materials (KS F ISO 5560-1, KS F 2271) Notification No. 2015-744 of Ministry of Land,

Test environment: Temperature (23 ± 2) ℃, Humidity (50 ± 5)% R.H.

Test result: Below the standard value

Test Item Test No. One 2 3 Judgment standard Remarks I
year
ashes
Ryo Ten
room
Out
Rate Total heat released (MJ / ㎡) 0.9 0.7 0.9 fitness 8 MJ / ㎡



Time (s) in excess of 200 kW / 0 0 0 fitness Not to exceed 200kW / m2 continuously for more than 10s Test specimens (including core materials for composite materials) Through-going cracks, holes and melting

none

none

none

fitness

Not to be gas
Hazard The average behavioral downtime of the rat (min: s)
14:06
13:30
fitness
9 min or more

* Test configuration: Flame retardant paint (applied once) + GFRC panel (glass fiber, epoxy) 3mm + epoxy + concrete plate

As shown in Table 1, when the flame-retardant paint according to the present invention was applied to an existing panel, it can be confirmed that good flame-retardant results were passed through the reference value.

* Test Evaluation 2

The flame retardant paint of the present invention was applied to a GFRC panel stiffener developed by the present inventor once, and the flame retardant paint was once applied to it, and this test report was obtained by asking the ordering party to the test certificate.

Sample name: GFRC panel (t = 3mm) + paint

Test Methods

(1) KS F 2271: 2006

(2) KS F ISO 5660-1: 2008

Test result

Test Items
result Criteria
Test Methods
1 time Episode 2 3rd time Heat release test

Total heat released (MJ / ㎡) 0.7 0.9 0.5 8MJ / ㎡ or less

KS F ISO 5560-1: 2008 The time (s) at which the heat release rate exceeds 200 kW / 0 0 0 Harmful cracks, holes and melting (all melting of core material, disappearance), etc. none none none Not to be Gas hazard Stop time (min: s) 14:57 13:39 - 9min or more KS F 2271: 2006

* Complies with the Ministry of Land, Infrastructure and Transport Notice No. 2015-744 Flame retardant materials.

* Specimen composition GFRC panel (glass fiber 70% + epoxy 30%, 3mm) + paint

As shown in Table 2, when the flame-retardant paint according to the present invention was applied to an existing panel, it was confirmed that good flame-retardant results passed through the reference value.

Hereinafter, the production of the flame-retardant paint according to the present invention having the above-described constitution will be described.

The method for producing a flame-retardant paint according to the present invention comprises: 39 to 49% by weight of an aqueous resin; 16 to 20% by weight of ethylbenzene; 9 to 11% by weight of xylene; 0.1 to 0.3% by weight of toluene (Toluene); And 25 to 30% by weight of an inorganic flame retardant.

The aqueous resin may be selected from the group consisting of a urethane emulsion resin, an ethylene vinyl acetate emulsion resin, an acrylic silicone emulsion resin, an acrylic emulsion resin, a vinyl acrylic resin (Vinyl acrylic resin), and potassium silicate inorganic resin (Potassium silic).

The inorganic flame retardant may be selected from the group consisting of aluminum hydroxide, magnesium hydroxide, cerium oxide, antimony oxide, silicon oxide, tartaric acid zinc, molybdate Molybdates), a guanidine compound, and zirconium (zirconium).

5 parts by weight of a photocatalyst is added to 100 parts by weight of the inorganic flame retardant.

The photocatalyst is composed of at least one selected from the group consisting of titanium dioxide (TiO ₂ ), zinc oxide (ZnO), cadmium sulfide (CdS), and zirconium (ZrO ₂ )

The photocatalyst is composed of 50 wt% of titanium dioxide (TiO ₂ ), 40 wt% of silicon dioxide (SiO ₂ ), and 10 wt% of zinc oxide (ZnO).

That is, the method for producing a flame-retardant paint according to the present invention is a method for producing a flame-retardant paint, comprising the steps of: preparing an emulsion resin containing a urethane emulsion, an ethylene vinyl acetate emulsion resin, an acrylic silicone emulsion resin, 39 to 49% by weight of an aqueous resin composed of at least one selected from a resin, a vinyl acrylic resin and a potassium silicate inorganic resin, and 16 to 20% by weight of ethylbenzene, (Xylene), 0.1 to 0.3% by weight of toluene, and at least one selected from the group consisting of aluminum hydroxide, magnesium hydroxide, cerium oxide, antimony oxide, At least one or two selected from the group consisting of silicon oxide, tartaric acid zinc, molybdates, guanidine compounds, and zirconium. Mixing the inorganic flame retardant 25-30% by weight of over mixing to prepare a flame-retardant coating.

On the other hand, titanium dioxide (TiO2), zinc oxide (ZnO), cadmium sulfide (CdS), based on 100% by weight of the inorganic flame retardants, as needed, zirconium (ZrO ₂₎ composed of at least one or two or mixture of two or more selected from, or dioxide 5 wt% of a photocatalyst composed of 50 wt% of titanium (TiO ₂ ), 40 wt% of silicon dioxide (SiO ₂ ) and 10 wt% of zinc oxide (ZnO) can be added to prepare a flame retardant coating.

The flame retardant paint prepared by the above-described production method is composed of an aqueous resin, ethylbenzene, xylene, toluene and an inorganic flame retardant. Thus, the flame retardant paint has good water resistance, excellent adhesion to synthetic resin and bending property, , It is possible to safely protect various facilities and to minimize the damage thereof, and can be used as an environmentally friendly paint by reducing a good working environment and environmental pollution free from odor, and using an inorganic flame retardant This makes it possible to protect people from toxic gases and dioxins in case of fire because they do not contain halogen compounds. By using photocatalyst, it has an excellent action effect for removing NOx and SOx poisonous gas generated in a fire.

The preferred embodiments described in the specification of the present invention are intended to be illustrative, not limiting, and the scope of the present invention is indicated by the appended claims, and all modifications that come within the meaning of the claims are included in the present invention. .

Claims (12)

Acrylic resin emulsion resin, acrylic emulsion resin, vinyl acrylic resin, polyvinyl alcohol resin, polyvinyl alcohol resin, polyvinyl alcohol resin, 39 to 49% by weight of an aqueous resin composed of at least one selected from potassium silicate inorganic resin (Potassium silic), a styrene precursor, a resin solvent, diethylbenzene, acetophenone, ethyl 16-20 weight percent of ethylbenzene used as a chemical intermediate for the production of ethylanthraquinone, ethylbenzene sulfonic acid, propylene oxide, and alpha-methylbenzyl alcohol. %, An aromatic hydrocarbon having a structure in which two methyl groups are bonded to a benzene ring, and ortho-xylene, 9 to 11% by weight of xylene consisting of isomers of meta-xylene and para-xylene, 0.1 to 10% by weight of toluene, which is a compound in which one hydrogen atom of benzene is substituted with a methyl group, 0.3% by weight of at least one selected from the group consisting of aluminum hydroxide, magnesium hydroxide, cerium oxide, antimony oxide, silicon oxide, tartaric acid zinc, molybdate Molybdates), guanidine-based compounds, and zirconium (zirconium) at least one or two species consists of an inorganic flame retardant 25-30% by weight of a mixture composed of at least titanium dioxide (TiO _2), based on 100 parts by weight of the inorganic flame retardant selected from the group consisting of 50 parts by weight , 5 wt% of a photocatalyst composed of 40 wt% of silicon dioxide (SiO ₂ ) and 10 wt% of zinc oxide (ZnO), the glass transition temperature of the aqueous resin is -5 ° C to 30 ° C, Features from 0 ℃ to 25 ℃ Retardant coatings that. delete delete delete delete delete Acrylic resin emulsion resin, acrylic emulsion resin, vinyl acrylic resin, polyvinyl alcohol resin, polyvinyl alcohol resin, polyvinyl alcohol resin, 39 to 49% by weight of an aqueous resin composed of at least one selected from potassium silicate inorganic resin (Potassium silic), a styrene precursor, a resin solvent, diethylbenzene, acetophenone, ethyl 16-20 weight percent of ethylbenzene used as a chemical intermediate for the production of ethylanthraquinone, ethylbenzene sulfonic acid, propylene oxide, and alpha-methylbenzyl alcohol. %, An aromatic hydrocarbon having a structure in which two methyl groups are bonded to a benzene ring, and ortho-xylene, 9 to 11% by weight of xylene consisting of isomers of meta-xylene and para-xylene, 0.1 to 10% by weight of toluene, which is a compound in which one hydrogen atom of benzene is substituted with a methyl group, 0.3% by weight of at least one selected from the group consisting of aluminum hydroxide, magnesium hydroxide, cerium oxide, antimony oxide, silicon oxide, tartaric acid zinc, molybdate Molybdates), guanidine-based compounds, and zirconium (zirconium) at least one or two species consists of an inorganic flame retardant 25-30% by weight of a mixture composed of at least titanium dioxide (TiO _2), based on 100 parts by weight of the inorganic flame retardant selected from the group consisting of 50 parts by weight , 5 wt% of a photocatalyst composed of 40 wt% of silicon dioxide (SiO ₂ ) and 10 wt% of zinc oxide (ZnO), the glass transition temperature of the aqueous resin is -5 ° C to 30 ° C, 0 ° C to 25 ° C Retardant coating method, characterized in that the prepared by mixing.
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