KR100272624B1 - Fireproofing and sound-absorbing composition - Google Patents

Abstract

PURPOSE: A fire-retardant and sound-absorbent coating composition is provided to prevent releasing of the coating material from the subject substrate with causing no shrinkage, crack and peeling off of the coating material even at extinguishing fire by comprising particular composition of respective constructional materials. CONSTITUTION: The composition comprises 25-60 wt.% of light aggregates, 20-60 wt.% of binder, less than 50 wt.% of heat-absorbent material, 5-30 wt.% of bulky agent and 2-20 wt.% of carbonating sound-absorbing fiber. The composition further is added with at least one of additives, for instance, less than 1.5 wt.% of surfactant, 5 wt.% or less of thickener, less than 2 wt.% of reinforcing agent, 2 wt.% or less of delaying agent and/or less than 1 wt.% of anti-bacterial agent. The coating composition is applied to surface of structural frame of buildings and/or constructional subjects to improve hardness and internal intensity, and/or sound-insulation effects of them.

Description

Fireproof Sound Absorbing Coating Composition

The present invention relates to a coating composition for fire-absorbing sound absorption, and more particularly, spray coating on the surface of the steel structure of the building to prevent the reduction of strength and strength of the steel frame due to high heat in the event of fire and also spray coating on the wall or ceiling of the building The present invention relates to a coating composition for fire-absorbing sound absorption which can provide acoustic insulation. As the modern society is rapidly urbanized and the population density is increasing, high-rise and large-scale buildings are being used as a means for many people to live in small areas, and most of them are steel structures.

However, if the steel structure is applied to a large-scale high-rise building as it is, there is a risk of human injury due to the toxic gas emitted by the flame and the interior material when the building fires, and the strength and strength of the steel structure are degraded due to the high temperature. There is a risk of failure to withstand its own load. Therefore, the fire resistant material is coated on the surface of the steel structure.

Referring to the existing refractory coating materials in detail as follows.

Refractory coating materials may be classified into perlite, vermiculite, rock wool and mixed systems according to the main components, and the coating method may be classified into a method of installing a refractory molding and spray coating of an aqueous paste (slurry). .

In the meantime, fireproof coating materials have made great progress in terms of fire resistance performance. In particular, the technical development mainly to improve the heat resistance, that is, by using materials having an endothermic function at a high temperature, the fire resistance is greatly improved. Here, materials that have an endothermic function at high temperatures decompose their bonds (dehydration of bound water or generation of carbon dioxide gas) while taking away the heat of a fire, which serves to prevent the flame from conducting to steel frame. It will improve the fire resistance performance. However, materials having an endothermic function take away the heat of the surroundings at high temperatures, while accompanied by a drastic decrease in volume along with dehydration of the bound water or conversion to carbon dioxide gas. As a result, the coating material is lifted from the large crack and the adhered surface due to the volume change, and in severe cases, the coating material is dropped during the fire, thereby exposing the adhered surface, especially steel, to the fire, resulting in a decrease in strength and strength.

In order to solve this problem, some use inorganic fiber to solve this problem, but rock wool or glass fiber in the inorganic fiber irritates the skin of the human body and causes rash in severe cases. There is a problem in that it is not possible to completely remove the stress acting on the volume change.

Looking at this through the previously published literature is as follows.

Korean Patent Publication No. 94-9412, Korean Patent Publication No. 89-4281, Japanese Patent Publication No. Hei 6-32666, Japanese Patent Publication No. Hei 6-32667, Japanese Patent Publication No. Hei 6-80909 and Japanese Patent Publication Hei 6-99177 Since the coating | covering material disclosed in this issue uses inorganic fiber (rock wool, glass fiber, etc.), it causes skin irritation, etc., and is harmful to a human body.

The coating materials disclosed in Korean Patent Publication Nos. 92-3227, 6-32666, and 6-32667 contain a large amount of re-emulsified powder resin, which generates a large amount of toxic gas from the coating in case of fire in a building. It is very harmful, when using a small amount of re-emulsified powder resin it is difficult to induce micro cracks, there is a disadvantage that it is easy to generate medium and large cracks. In addition, when using the unbaked vermiculite of Japanese Patent Application Laid-Open No. 6-32666, since it is difficult to control the stress of vermiculite which is expanded during a fire, this may also act as a cause of medium and large cracks.

Since the coating material disclosed in Japanese Patent Application Laid-Open No. 3-100243 has a small amount of heat absorbing material, which is inferior in fire resistance performance, the thickness required for one hour of fire resistance is 30 mm, which is very thick, and Japanese Patent Publication No. Hei 5-20375 has a large amount of heat absorbing material. The heat-resistance performance was improved, but the density was high as 0.7 and the shrinkage by the heat absorbing material was high, so that granular sodium silicate coated with the expanding material was used, but the expansion and contraction at high temperature could not be balanced due to the expansion of shrinkage due to the excessive use of the expanding material. Falling of the coating material occurs as well as the production of coated granular sodium silicate is not easy, there is a problem in economic efficiency.

In addition, Japanese Patent Publication No. 7-13380 uses glass fiber as a coating material to improve the problems in Japanese Patent Publication No. 5-20375, and manufactures and uses aggregates including binding water disclosed in European Patent Publication No. 661241. In the coating composition, which is used in the form of cement, more than 40% of cement is used to solve the dropping and / or peeling phenomenon of the coating material which is caused by the dry water shrinkage and the bond water dropping out during the shrinkage and the hot air. There are problems that operators avoid.

As described above, the conventional fireproof coating material is intended to solve the problem by using inorganic fibers such as rock wool or glass fiber as a solution for dry shrinkage and hot export. However, when these inorganic fibers are harmful to the human body and the fiber is not used in any other way, Although an expansion material is used to prevent cracking by shrinkage, there is a problem that the balance is not easy to achieve.

On the other hand, the sound absorbing coating material (absorption material) may be classified into a mat-type and a spray-type coating material for spray coating embedded in the ceiling, wall and floor of the building according to the construction form. In addition, according to the composition of the material can be classified into a porous sound absorbing material having a good sound absorption at high frequency band and a plate vibration type and resonant sound absorbing material having a good sound absorption at low frequency band.

The spray-type sound absorbing material is prepared by mixing inorganic fibers, binders, thickeners, mineral oils and other organic additives, or using vermiculite or vegetable fibers as a main component. However, they all have the effect of constant sound absorption and heat insulation, but the former has to be handled with care because of the risk of dust generation in the inorganic fiber, and it is cumbersome to compact to obtain sufficient strength after spraying. This follows.

Recently, development of sound absorbing materials for creating a pleasant indoor environment from various noises has been made continuously, and the development of such sound absorbing materials has been made in a direction to obtain the effects of fire resistance and heat insulation.

Therefore, the present invention is also intended to solve the problems of the fire-resistant cladding and sound-absorbing cladding appearing in the prior art, the object of which is to prevent the large crack of the cladding or falling off from the adhered surface in the case of fire to maximize the safety of the steel fire to minimize An object of the present invention is to provide a coating composition for fire resistance and sound absorption which can exhibit excellent fire resistance and sound absorption performance as a coating thickness.

The coating composition for fire-absorbing sound absorption for achieving the object of the present invention is 25 to 60% by weight of the lightweight aggregate, 20 to 60% by weight of the binder, 50% by weight or less of the heat absorbing material, 5 to 30% by weight of the expandable material, and carbonizable sound absorbing fiber 2 It is characteristic to contain -20 weight%.

In addition, the coating composition for fire resistance and sound absorption of the present invention optionally has a surfactant for improving physical properties such as dispersibility, air entraining effect, and lubricity of the slurry during spray coating, within 1.5% by weight of the whole, and improving construction yield. Within 5% by weight of the thickener to prevent minor cracks on the surface of the coating layer during drying, and within 2% by weight of the strength reinforcing material for use in places where special strength is required, and sufficient working time Retardants for imparting may be used within 2% by weight of the total, and antimicrobial agents within 1% by weight of the total for the purpose of antibacterial and antibacterial from fungi or fungi.

The coating composition for fire resistance and sound absorption of the present invention thus formed is free from shrinkage, cracking and dropping by drying after spraying, and prevents shrinkage by expanding material in the fire and of course induces micro cracking by the carbonizable sound absorbing fiber. By dispersing stress caused by shrinkage of binder or heat absorber with large heat capacity, it prevents large cracks and prevents the coating from falling off, and maintains the shape of coating even when fire is extinguished.

The raw material of the coating composition for fireproof and sound absorption of this invention, and its action are demonstrated in detail.

Lightweight aggregates of 4 to 200 mesh in size include natural minerals such as expanded or unexpanded perlite, pumice, vermiculite, volcanic ash, pumice and the like; Hollow spheres made by artificially containing pores in glass or mineral materials; And an organic aggregate composed of granular foamed polystyrene and crushed foamed polystyrene, alone or in combination of two or more thereof.

The light weight aggregates listed above are light, with a specific gravity of 0.01 to 0.8 g / cc, reducing the load on buildings. In addition, the lightweight aggregate has a number of small pores are formed to have a low thermal conductivity (0.03-0.04㎉ / mh ℃) and as already well known in terms of sound absorption, heat insulation and strength is very good, improving the fire resistance, insulation and sound absorption performance of the coating material. Perlite, in particular, is more friendly because it is not toxic to the human body as a plant additive.

Such lightweight aggregates have the advantage of lowering the density and thermal conductivity of the sprayed coating material when it is included in the coating composition of the present invention more than 60% by weight, but the adhesion and strength is lowered, when included in less than 25% by weight, the adhesion and strength is excellent Since the density and the thermal conductivity of the coating material sprayed become high, it is preferable to use it in the range of 25 to 60 weight% with respect to the whole.

The binder is a material that allows the lightweight aggregates to be smoothly bonded to each other and to the surface of the steel structure (or the surface of the building or the surface of the building), and cements composed of portland cement, blast furnace cement, silica cement, alumina cement, and magnesia cement. Alternatively, gypsum or magnesia or magnesium sulfate composed of dihydrate gypsum, hemihydrate gypsum and gypsum plaster is used.

When the binder is used in an amount of 60% by weight or more with respect to the composition of the present invention, the adhesion and strength of the coating material are excellent, while the density and thermal conductivity are increased, so that the fire resistance is decreased. When used at 20% by weight or less, the density and thermal conductivity of the coating material decreases while the adhesion and strength decreases, so 20 to 60% by weight of the total is used.

The heat absorbing material includes limes such as calcium carbonate, slaked lime and quicklime; Gypsum such as dihydrate gypsum, hemihydrate gypsum and gypsum plaster; Aluminum hydroxide; Aluminum sulfate; borax; Magnesium carbonate; Magnesium hydroxide; Montmorillonite; Bentonite; Sodium bicarbonate; Sodium silicate; Alternatively, one or more kinds of artificial heat absorbing materials in the form of a powder or aggregate, which are primarily processed using a gas compound or the heat absorbing material, may be used. In the above, the endothermic material is to increase the endothermic ability to absorb the external heat by the generation of the combined water or carbon dioxide gas at a high temperature, specifically, the endothermic amount of each endothermic material is as follows;

Aluminum hydroxide: CaO + H ₂ O ⇔ Ca (OH) ₂ + 15,600 dl / mol

Gypsum: CaSO 4 + H ₂ O ⇔ CaSO 4 · 2H ₂ O + (4,000 ~ 7,000) ㎉ / mol

Magnesium hydroxide: MgO + H ₂ O ⇔ Mg (OH) ₂ + 8840 dl / mol

Borax: Na ₂ B ₄ O ₇ + 10 H ₂ O ⇔ Na ₂ B ₄ O ₇ 10 H ₂ O + (400-3,800) ㎉ / mol

Sodium bicarbonate: Na ₂ CO ₃ + H ₂ O + CO ₂ ⇔ 2NaHCO + 63,000 dl / mol

Aluminum hydroxide: Al ₂ O ₃ + 3H ₂ O ⇔ 2Al (OH) ₃ + 200 ㎉ / mol

Sodium _{silicate: Na2O · nSiO 2 + mH 2} O ⇔ Na 2 O · nSiO 2 · mH 2 O + 1,800㎉ / ㏖

Montmorillonite: It is composed of an expandable three-layered plate and has swelling characteristics. It is a highly plastic clay mineral divided into calcium-based and sodium-based, and emits H ₂ O at around 100 ° C.

Bentonite: Contains 90% or more of montmorillonite, the same as montmorillonite.

Such materials are accompanied by an endothermic reaction due to dehydration of bound water or release of carbon dioxide gas, thereby functionally absorbing heat from the external thermal environment in the fireproof sound absorbing coating composition, thereby increasing the heat capacity of the fireproof sound absorbing coating composition. It serves to improve the fire resistance of the composition. More specifically, the endothermic effect of the decomposition of the gas at 200 ° C. or lower, and the formation of the vapor gas layer, is the gypsum, such as hemihydrate gypsum and gypsum plaster. Existing and containing the weak bonding water is montmorillonite, bentonite, sodium silicate and the like.

In addition, it is decomposed at 500 ° C. or lower, and has an endothermic effect due to the formation of a water vapor gas layer, which is a lime lime, quicklime, or the like, which is present in combination with a compound such as silicic acid in the presence of water during formation of a refractory sound-absorbing coating composition.

Examples of the endothermic effect of the decomposition of the water vapor gas layer and the carbon dioxide gas layer by decomposition at 700 ° C. include sodium hydrogen carbonate, and the endothermic action of the formation of the water vapor gas layer by decomposition of the bound water at 800 ° C. or less. As what is mentioned, aluminum hydroxide and magnesium hydroxide which are hydroxide compounds are mentioned. In addition, examples of decomposing at 1000 ° C. or lower to have an endothermic effect due to the formation of a carbon dioxide gas layer include calcium carbonate and magnesium carbonate, which are carbonates.

As described above, the endothermic action of the endothermic material due to the endothermic action due to the dehydration or release of the combined water and the generation of carbon dioxide gas is the property of the endothermic material.

This heat absorbing material is effective to reduce the rapid rise in temperature of the steel structure or building surface while absorbing heat in the event of fire and absorbing heat in a fire after the fireproof and sound absorption coating composition is coated on the steel or building surface. It works. In other words, the heat absorbing material, together with other raw materials bring a thermal barrier effect on the steel structure, further improving the fire resistance performance of the coating composition.

When the heat absorbing material is used in more than 50% by weight of the entire coating composition, the fire resistance is improved, while the proportion of each coating composition other than the heat absorbing material decreases, causing shrinkage, and further, causing a large linear crack. This can cause peeling and dropping. Therefore, it is preferable to use a heat absorbing material within 50 weight% of the whole coating material composition.

The expansion material compensates for the volume reduction when the coating composition contracts at high temperature, thereby preventing the appearance change of the coating material, thus protecting the adhered surface such as steel frame firmly during the fire, thereby improving the fire resistance performance of the coating material. Specifically, silica, magnesia, expandable unexpanded vermiculite, expandable unexpanded pumice, expandable unexpanded perlite, silica, magnesia, expandable unexpanded vermiculite, expandable unexpanded pumice, expandable unexpanded perlite magnesium carbonate, silimite (silimanite), kyanite, andandalusite, bauxite, pyrophylite, dolomite, ferric oxide, ferro-ferric oxide, Ferrous oxide, illite, talc, orthoclase, agalmatolite, zircon, silicon carbide, expandable Swelling shale (shale) and non-expandable expanded clay or the like by mixing at least one member.

Generally, silica, magnesia, magnesium carbonate, silimite, citrine, red tin, boxite, pyrophyllite dolomite, or talc have thermal expansion properties of 10 to 30 in / in, ℃ 10 ⁶ , ferric oxide, ferro Ferric oxide, ferros oxide, illite, feldspar, lead stone, zircon, silicon carbide, etc., have thermal expansion characteristics of 5 to 10 in: /in.°C×106, and all of the above expandable materials have a high temperature when constructing a fireproof sound absorbing coating composition. When the composition causes the shrinkage to compensate for the reduction in volume by preventing the appearance change of the coating material to protect the adhered surface such as steel firmly during the fire, it is possible to improve the fire resistance performance of the coating material.

The expansion material compensates for the volume reduction when the fire-resistant sound-absorbing coating composition causes shrinkage in a fire, and in particular, shrinkage of the sound-absorbing sound-absorbing composition coated on the surface of steel or building with a volume expansion rate of about 10% of silica at high temperatures. It plays a role in ancestoring volume change. Therefore, the coating material does not cause an appearance change, so that the surface of the steel is firmly protected during the fire, thereby improving the fire resistance performance of the coating material.

Such an expansion material may not be expected to play a sufficient role in the case of fire when used in less than 5% by weight with respect to the composition of the present invention, when used by more than 30% by weight causes stress on the coating material in the event of a fire, the coating material is lifted or peeled off the adhered surface It becomes a cause of becoming. Therefore, it is preferable to use the expansion material at 5-30 weight% with respect to the whole coating composition.

The carbonizable sound-absorbing fibers are used by mixing one or more kinds of pulp, carbon fiber, cotton yarn, polyethylene fiber, polystyrene fiber, polypropylene fiber, chemical pulp and the like.

Carbonized sound-absorbing fibers eliminate the cause of large cracks and droppings due to the shrinkage of fire- and sound-absorbing coating compositions in the case of fire. It acts as a spider web and distributes the stress generated in the coating material in case of fire, so that the coating material is attached to the surface as it is, so that the heat penetrates into the portion caused by large cracks or dropouts and prevents the temperature of the surface such as steel frame from rising. do.

When the carbonizable sound-absorbing fiber is used in an amount of 2 wt% or less with respect to the composition of the present invention, it is difficult to induce sufficient micro cracks, and it is difficult to secure sound absorption performance. Therefore, it is used at 2 to 20% by weight based on the entire coating composition.

If the sound-absorbing fibers are 30 mm or more in length, the coating material is not properly formed during construction, so that the sound absorbing fibers are preferably within 30 mm.

Other additives will be described below.

Surfactant is for improving physical properties such as dispersibility, air entraining effect and lubricity of slurry during spray coating operation of coating composition for fire-absorbing and sound absorption, and one kind from surfactants of sodium, benzene, lignin, melamine, etc. It selects above and uses within 1.5 weight% of the whole coating composition.

Thickeners are used to improve construction yields and to prevent minor cracks on the surface of the coating layer during drying.These thickeners are selected from carboxymethyl cellulose (CMC), methylcellulose, polyethylene oxide, sugars, and swellable clays (bentonite, diatomaceous earth, etc.). Select the above and use within 5% by weight of the whole.

Strength reinforcing materials are intended for use in places where special strength is required. Polyvinyl alcohol (PVA), polyvinylacetate (PVAc), ethylene vinyl acetate (EVA), latex resins, vinyl acetate resins, vinyl acetate resins, Select one or more from acrylic resin, polyurethane, epoxy, phenol resin, etc., and use it within 2% by weight of the whole.

Retardant is to give sufficient working time, and at least one of animal proteins, sugars, etc. is used within 2% by weight of the total.

Antibacterial agents are used for the purpose of preventing fungi and fungi, and are antibacterial.Phenol, organotin, organomercury triadin, quaternary ammonia salts, sulfonylpyridine, pentane, organic copper, organic nitrogen, and iodine Select one or more from silver, chloronaphthalenes, dehydroabiethylamine pentachlorophenol, pentachloro laurate, etc. and use within 1% by weight of the total.

Thus, the fireproof and sound absorption coating composition of this invention can obtain the coating thickness of 60 mm or more at the time of spraying.

Hereinafter, it will be described in detail through an embodiment of the present invention. These examples are intended to suggest preferred compositions of the present invention and not to limit the scope of the present invention. Examples 1-6 and Comparative Examples 1-3 are cases where the coating composition of this invention is used for a fireproof coating material use, and Example 7 is a case where it is used for a sound absorption material use.

EXAMPLES 1-6

In the composition shown in Table 1, perlite, cement, gypsum plaster, silica, pulp and other additives are mixed, and an appropriate amount of water is mixed into a slurry, which is then a specimen of H-shaped steel (300 × 300 × 10 × 20 mm). t, L2000 mm) was coated. The coating material was sprayed with a discharge amount of 2 m 3 / hr with the injector perpendicular to the adhered surface at a distance of 30 cm. The coating material coated on the adherend surface was applied until just before falling, and the thickness of one spray coating was measured. Then, the coating layer coated on the surface of the coating was pushed to the surface of the specimen perpendicularly to the center portion of the specimen, and the thickness was measured twice for each specimen. Specifically, the sliding disk was moved by applying sufficient force so that the surface of the coating material was kept flat when the thickness measuring pin touched the adhered surface, and then the thickness meter was read out from the coating layer to measure the thickness in units of 1 mm. The specimen was left to cure for 4 weeks, and then sufficiently cured. The thickness and density of the coated coating material (coating layer) were measured, and the deflection, peeling, and cracking state of the coating material were visually observed. In addition, in order to determine the fire resistance performance, the specimens were placed in a heating furnace, and the temperature of the coating material coated surface of the specimen was measured while maintaining the internal temperature at 1000 ° C. (heating temperature according to KS F 2257 and ASTM E 119). The temperature measurement was performed by attaching a temperature sensor to the specimen before coating the coating material and measuring the temperature change over time by the sensor. After the fire resistance test was terminated, the length of the crack, the width of the crack, the number of cracks and the crack state were measured. The results are shown in Table 2.

Comparative Examples 1-3

According to the composition of Table 1, perlite, cement, gypsum plaster, silica, pulp, and other additives are mixed, and an appropriate amount of water is mixed into a slurry, and the specimen is H-shaped steel (300 × 300 × 10 × 15 mmt). The surface of each was coated, and curing and physical properties were measured in the same manner as in Examples 1 to 3. The results are shown in Table 2.

As confirmed in Table 2, the fireproof and sound absorbing coating composition of the present invention satisfies the fire resistance performance required by the Korean Building Law (1 hour at 1000 ℃; 350 ℃ or less) when used as a fireproof coating material for the structure, In addition, it was found that cracking, peeling and sagging of the coating material did not occur after construction.

In the case of coating the coating layer with a thickness of about 20 mm, when the specimen prepared in Examples 1 to 6, that is, the coating composition according to the present invention is used, the back surface of the specimen left in a heating furnace at 1000 ° C. for 1 hour. While the temperature is generally 200 ° C. or less, in the case of using a known coating composition, it can be seen that the back temperature is impossible to measure or 500 ° C. or more under the same conditions. This is because the composition itself satisfies the fire resistance in the conventional case, but it seems to be due to the occurrence of large and large cracks and dropping of the coating material in the event of fire and heat directly penetrating the coating material.

In addition, in the case of using the existing coating composition, since the coating layer thickness is within 20 mm, spray coating is performed two to five times to coat the steel structure at a thickness having sufficient fire resistance for 1 hour, 2 hours and 3 hours. And it can be seen that the process of curing the coated coating material. On the other hand it can be seen that the coating layer of sufficient thickness can be formed by one spray coating operation by the present invention. In addition, it is possible to increase the spray amount of the coating material per hour up to about 2 times or more than conventional, it is possible to improve the economics of the coating material construction.

Example 7

In the same composition as in Example 1, a mixture of perlite, cement, gypsum plaster, silica, pulp, and additives was mixed with an appropriate amount of water to form a slurry, and the unit specimens were 10 mm thick and 1.2 m × 1.2 m in size. The coating composition was coated thereon using a (stamp) material and a foamed styrene foam having a thickness of 50 mm and a size of 1.2 m x 1.2 m as a base material.

The coating composition was spray-coated with a thickness of 10 mm (Sample 1), 20 mm (Sample 2), 30 mm (Sample 3), and 50 mm (Sample 4), respectively, on the night light (base material). The ash was spray coated with the coating composition to a thickness of 10 mm (Sample 5) and 20 mm (Sample 6), respectively. The prepared specimens had a density ranging from 320 to 370 kg / m 3.

The specimens 1 to 6 were transported to the sound absorbing chamber, and the unit specimens were combined to measure the sound absorbing performance. After installing in the center of the room, the four sides were surrounded by an iron frame and the gap was sealed with tape and building sealant, and then the sound absorption rate was measured. At this time, the unit specimen was filled with the same material, and the NRC (Noise Reduction Cofficient) measured by the reverberation chamber method is shown in Table 3 below.

The experimental result of Table 3 is not a value measured by making the specimen integrally. Therefore, if the specimen is manufactured in one piece without bonding, the seam is eliminated and the average sound absorption will be better.

As can be seen from Table 3, when the foamed styrene foam was used as a base material, the sound absorption rate was shown to be slightly superior, and the composition of the present invention was averaged when 50 mm was applied even if the foamed styrene foam was not used as the base material. The sound absorption rate was 0.72 or more, which was superior to the normal sound absorption material. However, at low frequencies, sound absorption is low, as is the case for all porous sound absorbing materials, so it is preferable to use plate vibration-type sound absorbing materials such as plywood, chestnut, gypsum board, etc., in particular, styropol such as foamed styrene foam. Seems to be.

As described in detail above, the fireproof sound-absorbing coating composition of the present invention has a thickness (1 hour) for exhibiting the fire resistance performance (350 ° C. or less) under the Korean Building Law in fire resistance performance, and is sufficient to provide a conventional fireproof coating material. Better fire resistance than used. In other words, various fire resistance mechanisms such as heat shielding effect due to numerous pores of lightweight aggregates could minimize the thickness to maintain the limit of the reference temperature as the fire resistance standard of the Korean Building Law. In addition, by preventing the coating material from falling off from the coating, substantial fire resistance is ensured, the sound absorption effect is excellent, and the workability is improved as well as the adverse effect on the surrounding environment can be minimized. In particular, the present invention induces micro-cracks in the coating material in case of fire so that sufficient fire resistance can be maintained on the surface of the coating material until the fire is extinguished, thereby substantially maximizing safety for fire.

Claims (7)

Natural mineral minerals consisting of expanded or unexpanded perlite, pumice, vermiculite, volcanic ash and pumice; Hollow spheres artificially formed innumerable micropores in glass or minerals; And 25 to 60% by weight of at least one lightweight aggregate selected from organic aggregates consisting of granular phospholipids and crushed polyphospholipids; 20 to 60% by weight of at least one binder selected from Portland cement, blast furnace cement, silica cement, alumina cement, magnesia cement, gypsum, gypsum plaster, magnesia and magnesium sulfate; Lime, hydrated lime, quicklime, dihydrate gypsum, hemihydrate gypsum, gypsum plaster, aluminum hydroxide, magnesium hydroxide, magnesium carbonate, calcium carbonate, aluminum sulfate, borax, monlorilonite, bentonite, sodium bicarbonate, sodium silicate Up to 50% by weight of heat absorbing material; Expandable Unexpanded Vermiculite, Expandable Unexpanded Pumice, Expandable Unexpanded Perlite, Expandable Unexpanded Blood (shale), Expandable Unexpanded Clay, Silica, Magnesia, Magnesium Carbonate, Silimanite, Kyanite, Scarlet (andalusite) 5-30% by weight of at least one expandable material selected from the group consisting of boxite, pyrophylite, dolomite and talc; And 2 to 20% by weight of at least one carbonizable sound absorbing fiber selected from pulp, cotton yarn, and chemical pulp. The method of claim 1, wherein the additive comprises at least one surfactant selected from sodium, benzene, lignin and melamine based; One or more thickeners selected from carboxymethylcellulose, methylcellulose, polyethylene oxide, sugars and swellable clays (bentonite, diatomaceous earth, etc.); At least one strength reinforcing material selected from polyvinyl alcohol, polyvinylacetate, ethylene vinyl acetate, latex resin, vinyl acetate resin, vinyl acetate resin, acrylic resin, polyurethane, epoxy and phenol resin; One or more retardants selected from animal proteins or sugars; And phenolic, organotin, organomercury, triadine, quaternary ammonia salts, halogenated sulfonylpyridine, pentane, organic copper, organonitrogen, iodine, silver, chloronaphthalenes, dehydroabiethylamine pentachloro A coating composition for fire-absorbing sound absorption, characterized in that the composition further comprises at least one compound selected from the group consisting of at least one antimicrobial agent selected from phenol (dehydroabiethylamine pentachlorophenol) and pentachloro laurate. The coating composition for fire-absorbing sound absorption according to claim 2, wherein the surfactant is added in an amount of 1.5 wt% or less. The coating composition for fire-absorbing sound absorption according to claim 2, wherein the thickener is added at 5% by weight or less. The fire-retardant sound-absorbing coating composition according to claim 2, wherein the strength reinforcing material is added at 2% by weight or less. 3. The fireproof sound-absorbing coating composition according to claim 2, wherein the retardant is added in an amount of 2 wt% or less. The fireproof sound-absorbing coating composition according to claim 2, wherein the antimicrobial agent is added in an amount of 1 wt% or less.