JP2000001380A - Coating composition for fire protection and sound absorption - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a coating compsn. which exhibits excellent fire resistance and sound absorbing performance in the min. coating thickness by incorporating specified proportions of a lightweight aggregate, a binder, a heat absorbing material, an expanding material and carbonaceous sound absorbing fibers. SOLUTION: The coating compsn. contains 25-60 wt.% lightweight aggregate having 0.01-0.8 g/cc specific gravity such as vermiculite, 20-60 wt.% binder such as Portland cement, <=50 wt.% heat absorbing material such as gypsum plaster, 5-30 wt.% expanding material such as silica and 2-20 wt.% carbonaceous sound absorbing fibers having <=30 mm length such as carbon fibers or further contains <=1.5 wt.% surfactant such as lignin, <=5 wt.% thickener such as CMC, <2 wt.% strength enhancer such as PVA, <2 wt.% retarder such as animal protein and <=1 wt.% antibacterial agent such as pentachlorolaurate. When the compsn. is sprayed, >=60 mm coating thickness is obtd. at a time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire-resistant and sound-absorbing coating composition and, more particularly, to spray coating on the surface of a steel structure of a building so that the steel frame can be heated by high heat during a fire. The present invention relates to a fire-resistant and sound-absorbing coating composition that can prevent deterioration in strength and proof strength, and can also impart acoustic properties by spray coating on walls and ceilings of buildings.

[0002]

2. Description of the Related Art As modern society is urbanized and densely populated areas are increasing, as a measure for a large number of people to live in a small area, buildings are being increased in height and size. Generally, a steel structure is applied.

However, if the steel frame structure is applied to a large-sized high-rise building as it is, there is a danger that human life is injured by fire and toxic gas generated while the interior materials are burning when a building fire occurs, There is a danger that the strength and proof stress of the steel structure will deteriorate and the building will collapse without bearing its own load. Therefore, it is necessary to coat the surface of the steel structure with a refractory material.

[0004] Hereinafter, a conventional refractory coating material will be specifically described.

[0005] The refractory coating material is made of pearlite,
It is classified into vermiculite, rock wool, and a mixture thereof, and its coating method is classified into a method of installing a refractory molded product and a method of spray coating with an aqueous slurry.

Hitherto, fire-resistant coating materials have made great progress in terms of fire resistance performance. In particular, the technical development for improving the heat resistance, that is, the use of a material having an endothermic function at a high temperature greatly improved the fire resistance performance. Here, a material having an endothermic function at a high temperature is one in which its own bond is decomposed (dehydration of combined water or generation of refractory carbon dioxide gas) while taking away the surrounding heat in the event of a fire, and the fire heat is It plays a role in preventing conduction to the outside, thereby improving the fire resistance performance of the fire-resistant coating material. However, a material having an endothermic function removes surrounding heat at a high temperature, but is accompanied by a sharp decrease in volume along with dehydration of bound water or conversion to carbon dioxide gas.
As a result, the coating material undergoes a large crack due to the change in volume and a phenomenon that the coating material separates from the surface to be adhered.Furthermore, the coating material falls off in the event of a fire, and especially the steel frame is exposed to the fire and the strength and proof strength decrease. Bring.

[0007] Due to such problems, some attempts have been made to solve the problem by using inorganic fibers. Among the inorganic fibers, rock wool or glass fiber irritates the skin of the human body and causes serious problems. May cause a rash and may cause sepiolite (sep
iolite) is not completely decomposed at high temperature,
In the event of a fire, a new problem of removing stress that acts on the coating material and causes a change in volume has newly arisen, and this problem has not yet been solved.

[0008] In this connection, a description will be given using an already published application.

Korean Patent Publication No. 94-9412, Korean Patent Publication No. 89-4281, Japanese Patent Application Laid-Open No. 6-326
No. 66, Japanese Unexamined Patent Publication No. 6-32667, Japanese Unexamined Patent Publication No. 6
The coating materials disclosed in JP-80909 and Japanese Patent Publication No. 6-99177 use inorganic fibers (rock wool, glass fiber, etc.), which cause skin irritation and the like and are harmful to the human body. is there.

[0010] The coating materials disclosed in Korean Patent Publication No. 92-3227, JP-A-6-32666 and JP-A-6-32667 contain a large amount of re-emulsifying resin powder, and In the event of a fire, a large amount of toxic gas was generated from the coating material,
It is very harmful to the human body, and when a small amount of re-emulsified resin powder is used, there is a problem that a medium-sized crack is generated instead of inducing a micro-crack. Further, in the case of using unburned vermiculite disclosed in Japanese Patent Application Laid-Open No. 6-32666, it is difficult to control the stress of the vermiculite that is expanded during a fire, which also acts as a cause of a medium-large crack. .

The coating material disclosed in Japanese Patent Application Laid-Open No. 3-100243 has a thickness of 30 mm required for one hour of the fire resistance time due to the small amount of the heat absorbing material and the poor fire resistance performance. As very thick, in Japanese Patent Publication No. 5-20375, the heat-resistant performance was improved by increasing the amount of heat-absorbing material, but the density was as high as 0.7, and the shrinkage due to the heat-absorbing material was large at high temperatures. . Also, coated granular sodium silicate is used as the expanding material, but due to excessive use of the expanding material, detachment of the coating material due to expansion and contraction expansion at high temperatures occurs, and the coated granular silicate is used. The production of soda was not easy, and there was a problem in economy.

In Japanese Patent Publication No. 7-13380, glass fiber is used as a covering material in order to improve the problem of Japanese Patent Publication No. 5-20375. Also proposed in the specification, even in the coating composition in the form of manufacturing and using aggregates including bound water, by using 40% or more of cement, bound water is dropped from drying shrinkage and hot. Glass fibers harmful to the human body are used to solve the phenomenon of falling off and / or exfoliation of the coating material caused by inducing shrinkage, but this has a problem that field workers avoid using the glass fibers.

[0013]

As described above, conventional refractory coating materials have attempted to solve the problem by using inorganic fibers such as rock wool or glass fiber as a solution to drying shrinkage and hot shrinkage. Inorganic fibers are harmful to the human body, and when fibers are not used by another method, the expansion material is used to prevent cracks due to shrinkage, but there is a problem that it is not easy to balance them. I was

On the other hand, the sound-absorbing covering material (sound-absorbing material) is classified into a mat type buried in the ceiling, wall and bottom of the building and a spray type which is spray-coated according to the construction form. Further, according to the composition of the material, it is classified into a porous sound absorbing material having an excellent sound absorption coefficient in a high frequency band, a plate vibration type having an excellent sound absorbing coefficient in a low frequency band, and a resonance type sound absorbing material.

The spray type sound absorbing material includes inorganic fibers,
It is manufactured by mixing a binder, a thickener, mineral oil, and other organic additives, or is manufactured using vermiculite or dietary fiber as a main material. But,
These have a constant sound absorbing and heat insulating effect, but the former is not only to be handled with care because the inorganic fiber has the danger of generating dust in the work, but in order to obtain sufficient strength after spraying Has to perform the compaction work.

[0016] Recently, sound absorbing materials for composing a comfortable indoor environment free from various noises have been continuously developed, and the development of such sound absorbing materials also obtains the effects of fire resistance and heat insulation. The direction has been made.

An object of the present invention is to prevent a large crack in a cladding material and detachment from an adhered surface in a fire, to improve the safety of a steel frame against a fire, and to provide an excellent fire resistance and a fire resistance with a minimum coating thickness. An object of the present invention is to provide a fire-resistant and sound-absorbing coating composition capable of exhibiting sound absorbing performance.

[0018]

The refractory and sound absorbing coating composition for achieving the object of the present invention has a lightweight aggregate in the range of 25-60% by weight and a binder in the range of 20-60% by weight. , 50% or less by weight of the heat absorbing material, 5-30% by weight of the expanding material, and 2-20% by weight of the carbonizable sound absorbing fiber.

The present invention is also directed to selectively improving the physical properties such as the dispersibility of the slurry, the air entrainment effect and the lubricity during the spray coating operation, by adding a surfactant within 1.5% by weight of the whole. Thickener to improve the construction yield and prevent fine cracks on the coating layer surface during drying.
Within 5% by weight, within 2% by weight of a strength reinforcing material for use in places where the development of special strength is required, and 2% by weight of a retarder to give sufficient working time
The antibacterial agent can be used within 1% by weight, and for the purpose of preventing bacteria and fungi from fungi or fungi.

The fire-resistant and sound-absorbing coating composition of the present invention thus formed is free from shrinkage, cracking and detachment due to drying after spraying, prevents shrinkage due to the expansive material in the event of fire, and provides carbonization. Micro-cracks are induced by the conductive sound absorbing fiber to disperse the stress caused by the shrinkage of the binder and heat absorbing material with a large heat capacity to prevent large cracks, prevent detachment of the covering material, and cover even during fire suppression. The shape of the material is maintained as it is, and sufficient fire resistance can be exhibited.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Raw materials of the fire-resistant and sound-absorbing coating composition according to the present invention and their actions will be described.

Lightweight aggregates are 4-200 mash in size and are made of natural minerals such as expanded or unexpanded perlite, pumice, vermiculite, volcanic disasters, floating stones, etc., and artificially made of glass and minerals. A hollow sphere manufactured so as to include pores in the material, and an organic aggregate made of granular expanded polystyrene and crushed expanded polystyrene alone or
Mix and use more than one species.

The above-mentioned lightweight aggregate has a specific gravity of 0.01-0.8 g / cc.
As a result, the load on the building is reduced. In addition, lightweight aggregates have numerous small pores and low thermal conductivity (0.03-0.04 kcal / mh ° C). As is already known, they are equivalent in sound absorption, heat insulation, and strength. Excellent in fire resistance, heat insulation and sound absorption performance of the covering material. In particular, perlite is more compatible because it is less toxic to the human body than is used as a food additive.

When such a lightweight aggregate is added to the coating composition of the present invention in an amount exceeding 60% by weight, there is an advantage that the density and thermal conductivity of the sprayed coating material are lowered, but the adhesive force and the adhesive strength are reduced. If the strength is inferior and less than 20% by weight, the adhesive strength and strength are excellent, but the density and thermal conductivity of the sprayed coating material will be high, so use in the range of 25-60% by weight based on the whole Is preferred.

[0025] The binder is made of Portland cement, as a material for smoothly bonding between the lightweight aggregates and between the lightweight aggregate and the surface of the steel structure (or the adhered surface such as the ceiling and the wall surface of the building). Blast furnace cement, silica cement, alumina cement or magnesia cement,
Alternatively, gypsum consisting of gypsum dihydrate, hemihydrate gypsum, gypsum plaster, or magnesia or magnesium sulfate is used as a mixture.

When such a binder is added in an amount exceeding 60% by weight based on the composition of the present invention, the adhesive strength and strength of the coating material are excellent, but the density and thermal conductivity are increased and the fire resistance is increased. Is inferior, and in the event of a fire, the stress of the composition is large, and the stress is locally concentrated and acts as a factor for large cracks,
If the content is less than 20% by weight, the density and thermal conductivity of the coating material will be low, but the adhesion and strength will be poor.

Examples of the heat absorbing material include limes such as calcium carbonate, slaked lime and quick lime, gypsums such as gypsum and gypsum plaster, aluminum hydroxide, aluminum sulfate, borax,
Magnesium carbonate, magnesium hydroxide, montmorillonite, bentonite, sodium bicarbonate, sodium silicate, or a gas compound, or a mixture of at least one kind of powdered or aggregated artificial heat absorbing material using the heat absorbing material. To use. The artificial heat absorbing material is for further enhancing the heat absorbing property, and has a function of generating combined water or carbon dioxide gas at a high temperature to absorb external heat.

The heat-absorbing material is a fire-resistant and sound-absorbing coating composition coated on a steel frame and an adhered surface of a building, and absorbs heat in the event of a fire to release crystallization water or carbon dioxide gas. It works effectively to reduce the rapid rise in temperature of the building attachment surface. That is, the heat-absorbing material, together with another raw material, provides a heat-blocking effect on the steel structure, so that the fire resistance of the coating composition is further improved.

[0029] Such a heat absorbing material is used for the entire coating composition.
Addition of more than 10% by weight improves fire resistance,
The proportion of each of the coating compositions other than the heat absorbing material decreases, causing shrinkage, directly causing large cracks, and causing peeling and falling off of the coating material. Therefore,
The heat absorbing material is preferably used in an amount of 50% by weight or less based on the total weight of the coating composition.

The expanding material may be silica, magnesia, expandable unexpanded vermiculite, expandable unexpanded pumice, expandable unexpanded perlite, magnesium carbonate, sillima.
nite), kyanite (kyanite), andalusite (andal
usite), bauxite, pyrophyllite (py
rophyllite), dolomite, ferric oxide, ferro-ferric oxide, ferrous oxide,
Illite (illite), talc (talc), feldspar (orthoclase),
A mixture of at least one of agalmatolite, zircon, silicon carbide, intumescent unexpanded shale or intumescent unexpanded clay is used.

When the fire-resistant and sound-absorbing coating composition shrinks in the event of a fire, the expanding material compensates for the decrease in volume, and follows the shrinkage of the fire-resistant and sound-absorbing composition coated on the adhered surface of the steel frame and the building. Suppress volume change. In particular, in the case of silica, the volume expansion coefficient at a high temperature is about 20%.

Therefore, the coating material protects the adhered surface such as a steel frame firmly during a fire without causing a change in external shape, and thus improves the fire resistance performance of the coating material.

When the amount of the expanding material is less than 5% by weight based on the composition of the present invention, it cannot be expected to play a sufficient role in a fire. This causes a stress on the coating material and acts as a cause for the coating material to separate or peel off from the adherend surface. Therefore, it is preferable to use 5-30% by weight of the expanding material based on the whole coating composition.

The carbonizable sound absorbing fiber may be pulp, carbon fiber, natural fiber (eg, cotton yarn), synthetic fiber (eg, polyethylene fiber, polystyrene fiber, polypropylene fiber, polyvinyl alcohol fiber, etc.), chemical fiber (eg, rayon, etc.), chemical pulp. And the like.

The carbonizable sound-absorbing fiber is intended to eliminate the cause of large cracks and falling off due to shrinkage of the fire-resistant and sound-absorbing coating composition during a fire. The carbonization causes fine micro-cracks in the coating along the carbonized space, like spider threads, and plays a role in dispersing the stress generated in the coating during a fire. Is attached to the adherend surface as it is, preventing heat from penetrating into gaps formed by the large cracks and falling off and increasing the temperature of the adherend surface such as a steel frame.

When such a carbonizable sound absorbing fiber is used in an amount of less than 2% by weight based on the composition of the present invention, it is difficult to induce sufficient microcracks, it is difficult to secure sound absorbing performance, and If the amount exceeds 20% by weight, the strength of the product is remarkably deteriorated.
Use in the range of 20% by weight.

If the length of the sound-absorbing fiber is more than 30 mm, the covering material is not preferably formed at the time of construction.
The length is preferably equal to or less than mm.

Hereinafter, other additives will be described.

The surfactant is used to improve the physical properties such as the dispersibility of the slurry, the effect of entrained air (entrained flow) and the lubricity during the spray coating operation of the fire-resistant and sound-absorbing coating composition. One or more of sodium, benzene, lignin and melamine surfactants are selected and used in an amount of not more than 1.5% by weight of the whole coating composition.

The thickener is used to improve the work yield and prevent fine cracks on the surface of the coating layer during drying. Carboxymethyl cellulose (CMC), methyl cellulose,
One or more selected from polyethylene oxide, sugars, and swellable clays (bentonite, diatomaceous earth, etc.) are used in an amount of 5% by weight or less.

The strength reinforcing material is used in a place where the development of special strength is required, and includes polyvinyl alcohol (PVA), polyvinyl acetate (PVAc), ethylene vinyl acetate (EVA), redox resin, and vinyl nitrate resin. , A vinyl nitrate chloride resin, an acrylic resin, a polyurethane, an epoxy, a phenol resin, etc., to be used within 2% by weight of the total.

The retarder is used to provide a sufficient working time, and one or more of animal proteins, sugars and the like are selected and used within 2% by weight of the whole.

The antibacterial agent is used for the purpose of preventing bacteria and fungi from fungi and fungi, and includes phenol-based, organotin-based, organic mercury-based, triazine-based, quaternary ammonium salt-based, sulfonylpyridine halide-based, Captan type,
Select at least one from organocopper, organic nitrogen, iodine, silver, chloronaphthalenes, dehydroabiethylamine pentachlorophenol, and pentachlorolaurate to 1% by weight or less of the total use.

The refractory and sound-absorbing coating composition of the present invention thus formed can provide a coating thickness of 60 mm or more at a time during spraying.

[0045]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail through embodiments. These examples are intended to illustrate preferred compositions of the invention and do not limit the scope of the invention. Example 1-6 and Comparative Example 1-3 are cases where the coating composition according to the present invention is used for a fireproof coating material, and Example 7 is a case where the coating composition is used for a sound absorbing material.

[0046]

Example 1-6 Perlite, cement, gypsum plaster, silica, pulp and other additives were mixed with the composition shown in Table 1, and an appropriate amount of water was mixed therewith to form a slurry. Specimen H-beam (300 × 300 × 10 × 20mmt, L2000
mm). The coating material should be
To distance of 30 cm, discharge the injectors in the vertical amount 2m ³ / hr
Spray coating. The coating material coated on the surface to be adhered was painted, and the thickness of one-time spray painting was measured. Then, the thickness of the coating layer coated on the adhered surface was pushed into the specimen perpendicular to the center of the specimen to the adhered surface of the specimen, and the thickness was measured twice for each specimen. . Specifically, when the thickness measuring pin hits the surface to be adhered, after applying a sufficient force so that the surface of the coating material becomes the surface and operating the sliding disk, the measuring instrument is detached from the coating layer. Reading the thickness indicator, the thickness was measured in 1 mm units. After leaving the manufactured specimens for 4 weeks and cultivating them sufficiently, the coated coating material (coating layer)
Of the coating material was visually observed for dripping, peeling and cracking of the coating material. In addition, in order to know the fire resistance performance, the test pieces were each placed in a heating furnace, and the temperature of the coating surface of the coating material of the test pieces was measured while maintaining the internal temperature at 1000 ° C. (heating temperature according to KS F 2257 and ASTM E 119). . In the temperature measurement, a temperature sensor was attached to the specimen before coating the coating material, and the temperature change over time was measured by the sensor.
After the fire resistance test was completed, the test pieces were taken out in a heating furnace to measure the length, width, number and state of the cracks, and the results are shown in Table 2.

[0047]

Comparative Example 1-3 Perlite, cement, gypsum plaster, silica, pulp and other additives were mixed in accordance with the composition shown in Table 1, and an appropriate amount of water was mixed into the slurry to prepare a slurry. The surface of each H-section steel (300 × 300 × 10 × 15 mmt) was coated, and curing and measurement of physical properties were performed in the same manner as in Example 1-6. The results are shown in Table 2.

[0048]

[Table 1]

[0049]

[Table 2]

As can be seen from Table 2, when the fire-resistant and sound-absorbing coating composition of the present invention is used as a fire-resistant coating material for steel structures, the fire resistance performance required by the Korean Building Law (1000) is required. (1 hour at 350 ° C .: 350 ° C. or less), and it was confirmed that cracking, peeling and sagging of the coating material after the application did not occur.

When the coating layer is applied at a thickness of about 20 mm, the sample manufactured in Example 1-6, that is, when the coating composition according to the present invention is used, a heating furnace of 1000 ° C. The temperature of the back side of the specimen left for 1 hour at approximately 200 ° C or less (185
On the other hand, when a coating composition known in the art is used, the backside temperature under the same conditions cannot be measured or is 100 ° C or higher. This is considered because the conventional composition itself satisfies the fire resistance performance, however, in the event of a fire, medium-sized cracks and falling off of the coating material occur, and heat penetrates directly into the coating.

Further, when the existing coating composition is used, the thickness of the coating layer is within 20 mm, so that it has a sufficient fire resistance performance corresponding to 1 hour, 2 hours and 3 hours, It can be seen that in order to coat the steel structure, 2-5 spray coating operations and a curing process of the coated coating should be performed. On the other hand, it is understood that a coating layer having a sufficient thickness can be formed by a single spray coating operation according to the present invention. Further, the spraying amount of the coating material per hour can be increased to about twice or more as compared with the related art, and the economical efficiency of the coating material application can be improved.

Example 7 Perlite, cement, gypsum plaster, silica, pulp and an additive mixture having the same composition as in Example 1 were mixed with an appropriate amount of water to form a slurry. 1.2m x 1.2m asbestos cement board and 50mm thickness,
The coating composition was coated thereon using 1.2 mx 1.2 m expanded styrene as a substrate.

10 mm each of asbestos cement (sample 1),
The coating composition was spray-coated at a thickness of 20 mm (sample 2), 30 mm (sample 3) and 50 mm (sample 4), and 10 mm (sample 5) and 20 mm (sample The coating composition was spray-coated at the thickness of piece 6).
Density of the fabricated specimens ranged from 320-370kg / m ^3.

The test piece 1-6 was transported to the sound absorbing chamber, and the unit test pieces were combined for sound absorption performance measurement. During the sound absorption coefficient measurement method, the sample size specified in KS F 2805 of the reverberation chamber method was used. to fit, 2.93m × 3.63m, after placing the whole area 10.64M ² in the center of the acoustic chamber, winding the four sides with iron frame, then the gap is sealed with a sealant for buildings and tape, measuring the sound absorption rate did. At this time, the unit specimens were filled with the same material, and NRC (Noise Reduction Cofficien
t: average sound absorption coefficient) is shown in Table 3 below.

[0056]

[Table 3]

The experimental results in Table 3 are not values measured by integrally preparing test pieces. Therefore, when the test pieces are integrally manufactured without being joined, the seams are eliminated and the average sound absorption coefficient is further improved.

As can be seen from Table 3, when foamed styrene was used as the base material, the sound absorption coefficient was slightly superior, and even when foamed styrene was not used as the base material, the composition of the present invention could be used.
When applied to 50 mm, the average sound absorption coefficient is 0.72 or more, which is superior to ordinary sound absorbing materials. However, the sound absorption coefficient in the low frequency band is, like all porous sound absorbing materials, it is preferable to use a plate vibration type sound absorbing material as a base material, for example, plywood, asbestos cement board, gypsum board, etc. It is more preferable to use a foamed styrene resin as described above.

[0059]

As described above, the fire-resistant and sound-absorbing coating composition according to the present invention has a thickness (1) in order to satisfy the fire resistance (350 ° C. or less) according to the Korean Building Law in fire resistance. A time of 20 mm is sufficient, and the fire resistance is superior to that of a conventional fire-resistant coating material. That is, the thickness that can maintain the reference temperature limit in accordance with the fire resistance standard in the Republic of Korea can be minimized by various fire resistance mechanisms such as the heat blocking effect by the countless pores of the lightweight aggregate. With it,
By preventing the coating material from falling off the coating, substantial fire resistance performance is ensured, the sound absorbing effect is excellent, and the adverse effect on the surrounding environment including workability can be minimized. In particular, the present invention provides a method for inducing micro-cracks in a cladding material during a fire so that sufficient fire resistance is maintained so that the cladding material adheres to an adherend surface until the time of fire suppression. Is substantially improved.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) E04B 1/76 E04B 1/76 E 1/94 1/94 E (72) Inventor Jun Sang-ok Korea, 780-130 Citi, Hwangsan-dong, 101-1206, Themic Apartment

Claims (12)

[Claims] 1. Light weight aggregate in the range of 25-60% by weight, binder 20-
A fire and sound absorbing coating composition comprising 60% by weight, 50% by weight or less of heat absorbing material, 5-30% by weight of intumescent material, and 2-20% by weight of carbonizable sound absorbing fiber. 2. The lightweight aggregate has at least one natural mineral mineral selected from expanded or unexpanded pearlite, pumice, vermiculite, volcanic disaster and spar, artificially glass or mineral, and has numerous micropores. 2. The fire-resistant and sound-absorbing coating composition according to claim 1, wherein the coating composition is at least one selected from a formed hollow sphere and an organic aggregate made of a granular polystyrene resin or a crushed polystyrene resin. 3. The binder according to claim 1, wherein the binder is at least one selected from Portland cement, blast furnace cement, silica cement, alumina cement, magnesia cement, gypsum, gypsum plaster, magnesia and magnesium sulfate. Item 4. The coating composition for refractory and sound absorption according to Item 1. 4. The heat absorbing material includes lime, slaked lime, quicklime, gypsum dihydrate, hemihydrate gypsum, gypsum plaster, aluminum hydroxide, magnesium hydroxide, magnesium carbonate, calcium carbonate, aluminum sulfate, borax, montmorillonite, bentonite, The fire-resistant and sound-absorbing coating composition according to claim 1, wherein the coating composition is at least one selected from sodium hydrogen carbonate and sodium silicate. 5. The expanding material is silica, magnesia, expandable unexpanded vermiculite, expandable unexpanded pumice, expandable unexpanded perlite, magnesium carbonate, sillimanite.
manite), kyanite, andalusite (and
alusite), bauxite, pyrophyllite
(pyrophyllite), dolomite, ferric oxide,
Ferro-ferric oxide, ferrous oxide, illite, talc, talc, orthoclas
e), algite, zircon, silicon carbide, intumescent unexpanded shale, and intumescent unexpanded clay, at least one selected from the group consisting of fireproof and refractory clays according to claim 1, wherein A coating composition for sound absorption. 6. The carbonizable sound absorbing fiber is pulp, carbon fiber,
2. The method according to claim 1, wherein the fiber is at least one selected from natural fibers, synthetic fibers, chemical fibers and chemical pulp.
4. The coating composition for refractory and sound absorption according to claim 1. 7. The fire-resistant and sound-absorbing composition according to claim 1, wherein the additive comprises at least one of a surfactant, a thickener, a strength reinforcing agent, a retarder and an antibacterial agent. Coating composition. 8. The method according to claim 7, wherein the surfactant contains at least 1.5% by weight of at least one selected from sodium, benzene, lignin and melamine. Fire resistant and sound absorbing coating compositions. 9. The thickener according to claim 1, wherein at least one selected from carboxymethylcellulose, methylcellulose, polyethylene oxide, saccharides and swellable clays is added in an amount of 5% by weight or less. 7
4. The coating composition for refractory and sound absorption according to claim 1. 10. The strength reinforcing material may be at least one selected from polyvinyl alcohol, polyvinyl acetate, ethylene vinyl acetate, redox resin, vinyl nitrate resin, vinyl nitrate resin, acrylic resin, polyurethane, epoxy and phenol resin. The fire-resistant and sound-absorbing coating composition according to claim 7, which is added in an amount of 2% by weight or less. 11. The fire-resistant and sound-absorbing coating composition according to claim 7, wherein at least one selected from animal proteins or sugars is added to the retarder in an amount of 2% by weight or less. . 12. Antibacterial agents include phenol-based, organotin-based, organic mercury-based, triazine-based, quaternary ammonium salt-based, halogenated sulfonylpyridine-based, captan-based,
One or more selected from organocopper, organic nitrogen, iodine, silver, chloronaphthalenes, dehydroabiethylamine pentachlorophenols and pentachlorolaurate in an amount of 1% by weight or less. The coating composition for fireproof and sound absorbing according to claim 7, characterized in that: