JPH0932152A - Fire-resisting insulation method, fire-resisting insulation covering material, fire-resisting insulation covering structure and forming method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve heat-insulating properties and fire resistance by modifying a bond by a flame, forming voids among aggregate and changing a covering material into a porous material. SOLUTION: A covering layer 3 is formed on the surface of an object 2 in a coating manner in a covering material 1. When the surface of the covering layer 3 is exposed to a flame 4, a bond 6 being interposed in the voids of aggregate 5 and mutually joining the aggregate starts its modifying from a surface. The bond 6 is modified and altered as shrinkage, sublimation, etc., at that time. A large number of fine voids are formed among the aggregate 5. The aggregate 5 is joined by the residue, etc., of the bond 6 and changed into a porous shape. When the time when the covering material 1 is exposed in the flame 4 is increased, a modifying region A proceeds into the covering layer 3, and heat-insulating properties are improved. The solid-matter blending rate of the aqueous high molecular substance of the bond is set in 1.5-5wt.% of the covering material and the rate of the high molecular substances of a resin and a rubber in a fire-resistant joining layer in 5-10 wt.%. Accordingly, a fire-resistant insulation effect can be displayed while adhesion to a covering object is left as it is held.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof heat insulating method applicable to a steel frame structure, an outer wall of a general building, etc., a fireproof heat insulating coating material used therefor, a fireproof heat insulating coating structure using the same, and a method for forming the same. .

[0002]

2. Description of the Related Art Materials used as structural members of buildings include steel, concrete and wood. However, when these materials are heated by a flame and their temperature rises, their mechanical performance changes. For this reason, under normal circumstances, various structural members that support the load without trouble may not support the load and may be destroyed.

For example, in a steel frame structure, a fireproof heat insulating coating material such as rock wool is applied to the surface of the structure together with a bonding agent such as cement, or a fireproof plate material is applied to the surface of the object to be coated by nails, rivets or the like. It is often attached to form a fireproof heat insulating layer.

The fire-resistant heat-insulating coating material forming the fire-resistant heat-insulating layer is non-combustible and has a high heat-insulating property, and can prevent the temperature of the object to be coated from rising during a fire and effectively prevent the mechanical strength and the like from lowering. As a nonflammability certifying standard for a fireproof heat insulating coating material, for example, JIS A1321-1975 defines an interior material of a building and a flame retardancy test method of a construction method.

[0005]

However, the conventional fireproof heat insulating coating material and the fireproof heat insulating coating structure formed using the same have the following problems.

The conventional fire-resistant heat-insulating coating material uses a highly heat-insulating and flame-retardant material such as rock wool, etc., and transfers heat to the surface of the object to be coated without changing the fire-resistant heat-insulating coating layer itself. The main focus is on prevention. On the other hand, in order to secure sufficient fire resistance and heat insulation, it is necessary to form a fire resistant heat insulation coating layer having a thickness of several centimeters.

In particular, it is effective to provide bubbles or hollow portions in the fireproof heat insulating coating layer in order to enhance the fireproof heat insulating property, and in order to achieve this, the thickness of the fireproof heat insulating coating layer is further increased. There must be.

However, when bubbles or the like are formed in the fire-resistant heat-insulating coating layer, not only the strength of the fire-resistant heat-insulating layer itself is greatly lowered, but also the adhesive force to the surface of the object to be coated is lowered,
Also difficult to apply.

In the case of forming a fire-resistant heat-insulating coating layer by applying a fire-resistant heat-insulating coating to the surface of an object to be coated, for example, a fire-resistant material such as rock wool is used with a highly heat-resistant bonding agent such as cement. It is often applied to the surface of the object to be coated. An air gun or the like is used to apply the rock wool or the like, and a large number of voids are formed in the fireproof heat insulating coating layer, so that high heat insulating properties can be exhibited.

However, the fire-resistant heat-insulating coating structure formed by applying the rock wool or the like is such that the surface of the object to be coated is covered with cotton, and the fire-resistant heat-insulating coating layer itself has a normal strength. Very low compared to etc. Therefore, there is a problem that the fireproof heat insulating coating material is easily peeled off when a human body, an article or the like comes into contact with the human body.

Moreover, the bonding strength between the cement or the like and the surface of the object to be coated is low, and the problem that the fireproof heat insulating coating layer peels off from the surface of the object to be coated and falls easily occurs.

Particularly, in a steel frame structure, there is a large difference in the physical properties such as the coefficient of thermal expansion between the steel frame and the fireproof heat insulating coating material.
In the event of a fire or with the passage of time, the adhesive strength is reduced, and the fire-resistant heat-insulating coating material often falls in a large lump. Therefore, in a fireproof heat insulating coating structure of a steel tower or a building such as an advertising tower installed on the roof of a building, it is necessary to strictly perform safety management from the viewpoint of preventing falling.

On the other hand, in a fireproof heat insulation coating structure formed by attaching a fireproof heat insulation panel or the like formed in advance by a porous material or the like to the surface of the object to be coated,
Since a reinforcing material or the like can be provided in the panel in the process of manufacturing the fireproof heat insulating panel, there is no problem in strength of the panel itself. Further, since the panel is fixed to the surface of the object to be coated with bolts, rivets, etc., the risk of the fireproof heat insulating coating material peeling off and falling is small.

However, the work for installing the fireproof heat insulating panel becomes a large-scale work, and the cost for the work is extremely high. Moreover, when installing a fireproof panel in a high place, there is also a problem that the danger during construction increases. Further, in a lightweight structure such as a steel tower, it is often difficult to form a fireproof structure with a fireproof heat insulating panel.

In order to solve the above problems, in recent years, a fireproof heat insulating coating material has been developed which foams and expands several tens of times when the temperature rises due to a fire to form a porous layer having excellent heat insulating properties. The foam-type fire-resistant heat-insulating coating structure is epoch-making in that it usually forms a thin coating layer, while the fire-resistant heat-insulating coating layer itself expands and changes in the event of a fire to enhance the fire-resistant insulating performance.

However, the above-mentioned foaming mechanism is complicated, and it is very difficult to accurately control the performance of the foaming mechanism and the fireproof heat insulating coating layer after foaming. For this reason, there is a problem that the construction is troublesome and the work efficiency is deteriorated.

Further, in the foamable fireproof heat insulating coating structure, most of the coating layer foams and expands, so that the adhesive strength between the fireproof heat insulating coating layer and the surface of the object to be coated after foaming expansion is kept constant during a fire. Is difficult to do. Therefore, the problem that the fire-resistant heat-insulating coating layer is peeled off from the object to be coated easily occurs.

The present invention has been devised under the above-mentioned circumstances, and by solving the above-mentioned conventional problems and changing the structure of the fire-resistant heat-insulating coating layer by flame, the heat-insulating property and fire-proof property can be improved. While providing a fireproof heat insulating method for improving the, usually, the strength of the fireproof heat insulating coating layer is high, it can also be used as a protective coating material for the coating target, a fire resistant heat insulating coating material, and a fire resistant heat insulating coating structure using the same It is an object to provide a forming method.

[0019]

Means for Solving the Problems To solve the above problems, the present invention takes the following technical means.

That is, the invention described in claim 1 of the present application is a fireproof heat insulating method using a fireproof heat insulating coating material containing a fireproof aggregate and a bonding agent for joining the aggregates to each other. The above-mentioned bonding agent is gradually modified from the surface by a flame to form voids between the aggregates, and the refractory heat-insulating coating changes from its surface side to a porous state.

According to the second aspect of the present invention, the bonding agent in the above method is altered while generating gas to enhance the heat insulating effect.

The invention described in claim 3 of the present application is to achieve the fireproof heat insulating method according to claim 1, and comprises an aggregate having fire resistance and a bonding agent for joining the aggregates to each other. A fire-resistant heat-insulating coating material containing, characterized in that the above-mentioned bonding agent contains a component which is deteriorated by being heated by a flame to generate voids between the aggregates.

The invention as set forth in claim 4 of the present application is characterized in that the bonding agent generates a gas along with the alteration.

In the invention described in claim 5 of the present application, the bonding agent comprises an inorganic bonding agent and / or an organic bonding agent.

In the invention described in claim 6 of the present application, the alteration is carbonization, oxidation, sublimation of the bonding agent or its compounding component,
It is configured to be caused by contraction, release of bound water, or a combination of these.

The invention described in claim 7 of the present application employs, as the inorganic bonding agent, one containing a lime siliceous bonding agent as an essential component.

The invention described in claim 8 of the present application employs ordinary Portland cement or white Portland cement as the lime siliceous cement.

The invention described in claim 9 of the present application employs, as an organic bonding agent, one containing an aqueous polymer substance of resin and / or rubber as an essential component.

In the invention described in claim 10 of the present application, as an aqueous polymer substance of resin and / or rubber, an alkyl acrylate-acrylonitrile-methacrylic acid copolymer, isobutylene-maleic anhydride copolymer, butadiene- Acrylic acid ether-acrylic acid copolymer such as methacrylic acid copolymer, isoprene-acrylic acid copolymer, butyl acrylate-acrylic acid copolymer or 2-ethylhexyl acrylate-methacrylic acid copolymer, acrylic Acid butyl-methacrylic acid copolymer or acrylic acid 2-ethylhexyl-methacrylic acid copolymer acrylic ester-methacrylic acid copolymer, carboxyl polyisobutylene, ethylene-acrylic acid copolymer,
Emulsion of ethylene-methacrylic acid copolymer, butadiene-styrene carboxyl elastomer, butadiene acrylonitrile carboxyl elastomer, butadiene-methacrylonitrile carboxyl elastomer, butadiene-vinylidene chloride carboxyl elastomer, polychloroprene carboxyl elastomer, polyethylene carboxyl elastomer or polyisobutylene carboxyl elastomer. , An aqueous solution or a dispersion is adopted.

In the eleventh aspect of the invention of the present application, the bonding agent contains white Portland cement and the aqueous polymer substance as essential components, and the solid content ratio of the aqueous polymer substance to the refractory insulation coating is It is characterized by being set to 1.5 to 5% by weight.

According to the twelfth aspect of the present invention, as the aggregate, at least one selected from silica sand containing silicon dioxide as a main component, stone powder containing calcium carbonate as a main component, slag, and lightweight aggregate is selected. It is a mixture.

The invention described in claim 13 of the present application is a fire-resistant heat-insulating coating layer formed by applying the fire-resistant heat-insulating coating material according to any one of claims 3 to 12 to the surface of an object to be restored. It is related to.

According to a fourteenth aspect of the present invention, the fire-resistant heat-insulating coating material according to any one of the third to twelfth aspects is used to form a plate-shaped molded article having a shape corresponding to the surface shape of the object to be coated. And the plate-shaped molded body is attached to the surface of the object to be coated.

The invention as set forth in claim 15 of the present application is a fire-resistant heat-insulating coating structure comprising a plurality of fire-resistant heat-insulating coating layers formed by coating on the surface of the object to be coated, wherein the surface of the object to be coated has fire resistance. While forming a fire-resistant bonding layer that is a mixture of an aggregate and a bonding agent component with high adhesiveness to the surface of the object to be coated,
A fire-resistant heat-insulating layer formed by applying the fire-resistant heat-insulating coating material according to any one of claims 3 to 12 to the outermost side of the fire-resistant heat-insulating coating layer.

According to a sixteenth aspect of the present invention, the refractory bonding layer contains cement as a bonding agent and an aqueous polymeric substance of resin and / or rubber. While the blending ratio is set to 5% by weight to 10% by weight, the blending ratio of the polymer substance of resin and / or rubber in the fireproof heat insulating layer is set to 1.5% by weight to 5% by weight.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below.

The present invention is a fireproof heat insulating method characterized in that the fireproof heat insulating coating material is altered by a flame to enhance its fire resistance heat insulating property. This is accomplished by using a fire resistant thermal insulation coating compounded with a bonding agent that bonds to each other.

The most characteristic feature of the method according to the present invention is that the bonding agent for bonding the aggregates to each other is altered by the flame and the refractory heat-insulating coating material is changed into a porous state.
The point is to increase the fireproof heat insulating effect, and in this respect, it provides a completely new fireproof heat insulating method that has never existed before.

That is, in the fire-resistant heat-insulating coating material according to the present invention, the bonding agent is gradually altered from the surface by the flame to form voids between the aggregates, and the fire-resistant heat-insulating coating material is porous from the surface side. Changes to.

In general, when there are air bubbles or hollows inside the fire-resistant heat-insulating coating material, the excellent heat-insulating performance of air suppresses the conduction of heat to the coating object, and the temperature of the coating object rises. Be late.

Therefore, it can be said that the porous structure having innumerable voids between the fireproof aggregates is most suitable as the fireproof heat insulating covering material.

Moreover, in the present invention, the space between the aggregates is usually filled with the bonding agent to form a dense structure in which the aggregates are bonded to each other. For this reason, the coating layer has high mechanical strength and weather resistance under normal conditions, and functions as a protective coating for protecting the object to be coated, such as a waterproof or rust-proof coating.

In the fireproof insulation method according to the present invention,
First, the bonding agent for bonding the aggregates to each other is gradually altered from the surface by the flame to form voids between the aggregates. Usually, the temperature of the flame is 800 ° C to 1200 ° C, and when the flame directly acts on the surface of the fire-resistant heat-insulating coating layer at this temperature, the temperature gradually rises from the surface side. This time,
The aggregate has fire resistance, and there is no change such as deterioration until the melting temperature which is higher than the flame temperature, while the bonding agent that bonds the aggregates to each other is deteriorated and voids are generated between the aggregates. This alteration occurs from the surface of the refractory heat-insulating coating layer and progresses inward with the passage of time.

However, the thicker the layer changed to be porous, the higher the adiabatic efficiency and the lower the heat transfer rate. Therefore, the amount of heat transferred to the surface of the object to be coated can be suppressed low.

In conventional foamable fireproof insulation coatings,
The coating layer itself expands several tens of times to form a fireproof heat insulating layer. However, since the coating layer itself is largely deformed, there is a problem in the followability with respect to the surface shape of the object to be coated and the adhesiveness to the surface of the object to be coated.

On the other hand, in the fireproof heat insulating method according to the present invention, the bonding agent is denatured and transitions to a porous state with almost no change in the thickness of the fireproof heat insulating coating layer.

That is, the bonding agent existing so as to fill the voids between the aggregates is altered with almost no movement of the aggregates to form voids between the aggregates. Therefore, the refractory heat insulating coating layer itself is not significantly deformed.
Therefore, a large force does not act between the object to be coated and the fireproof heat-insulating coating layer, and the adhesive force at the interface between them does not significantly decrease in the event of a fire.

On the other hand, the refractory heat insulating coating used in the method of the present invention is not porous in the normal state. Therefore, the fire-resistant heat-insulating coating layer can be easily formed by painting or the like as in the case of a normal paint. Further, even if there is some variation in the thickness of the fireproof heat-insulating coating layer, there is no great variation in the fireproof heat-insulating performance as in the foamable fireproof heat-insulating coating material.

According to the second aspect of the present invention, the heat insulating property is further enhanced by generating gas from the bonding agent when the bonding agent is denatured.

That is, as described above, the bonding agent is denatured by the flame and gradually made porous from the surface of the fireproof heat-insulating coating material, but the bonding agent is degenerated while generating gas.

When the alteration is in the vicinity of the surface layer of the refractory heat-insulating coating layer, the gas generated from the bonding agent is directly discharged from the surface to the atmosphere. On the other hand, as the deterioration of the bonding agent progresses to the inside of the refractory heat insulating coating layer, the gas reaches the surface by weaving the voids formed between the aggregates.

That is, the gas generated from the bonding agent flows in the direction opposite to the heat conduction direction. The temperature at which the bonding agent is deteriorated and gas is generated varies depending on the bonding agent used, but it is desirable to set the temperature below the dangerous temperature of the object to be coated.

By the above method, the flow of gas hinders the progress of heat to the inside, and the heat insulation efficiency is remarkably improved.

In particular, when cement is mixed as a bonding agent, the bound water accumulated in the cement hydrate vaporizes while removing the latent heat of vaporization during free evaporation.
The heat insulation efficiency is further enhanced.

A fire-resistant heat-insulating coating material for achieving the above-mentioned fire-resistant heat-insulating method is a fire-resistant heat-insulating coating material containing a fire-resistant aggregate and a bonding agent for bonding the aggregates to each other. Various forms can be adopted as long as they are blended with a component that is deteriorated by being heated in (2) to generate voids between the aggregates.

For example, when a polymer material such as resin and / or rubber is included in the bonding agent, the polymer material is melted by the temperature rise, sublimates, carbonizes, or oxidizes to reduce the volume, resulting in bone loss. Voids can be created between the materials.

Generally, the polymer component is flammable, and if the proportion of the polymer component is large, the component itself burns and cannot exhibit the required fire resistance. However, by suppressing the compounding ratio of the polymer component to be low, it is possible to construct a fireproof heat insulating coating material having sufficient performance. Furthermore, by adding together a refractory inorganic bonding agent such as cement, it is possible to exhibit sufficient refractory insulation performance even at high temperatures.

Although the substance of the alteration phenomenon that occurs when the above polymeric substance is exposed to a high temperature in a minute film-like space between aggregates has not been clarified, it is generally from 150 ° C to 200 ° C.
When the temperature reaches, the heat resistance limit of the polymer substance is exceeded and thermal decomposition begins. In the process of thermal decomposition, there are those such as cellulose that directly become a gas with a carbon residue left behind, and those such as plastic that decompose once after being dissolved. further,
Some of the decomposition gasses are flammable such as hydrogen, carbon monoxide, and hydrocarbons, and some are nonflammable such as water vapor and carbon dioxide.

Generally, when a combustible gas is generated from a polymer substance, the gas is mixed with air and burns only.

However, in the fire-resistant heat-insulating coating material according to the present invention, since the polymer substance is blended as a binder for the aggregate, the blending ratio thereof is low. For this reason, self-combustion cannot be performed, and combustion can be performed only when the flame is reached. Therefore, even a bonding agent containing a component that generates a flammable gas can exhibit high fire resistance.

In addition, when an inorganic binder such as cement is blended with a polymeric substance such as resin, the cement is altered to release bound water and generate incombustible water vapor. Is even higher.

Moreover, since it is considered that the surface of the fire-resistant heat-insulating coating layer is exposed to a flame and becomes extremely high in temperature, even if a toxic gas is generated from a polymer substance, etc. Completely oxidatively burned by the flame,
It is thought that it can be converted into a non-toxic gas.

As the bonding agent that can be used in the present invention, an inorganic bonding agent and an organic bonding agent can be considered. It is preferable to use a mixture of these two kinds of bonding agents in order to improve the fire insulation performance.

The process by which the binder including the inorganic binder and the organic binder is altered has not been clarified in detail, but in addition to the above-mentioned alteration of the polymer substance, carbonization, oxidation, sublimation, It is considered to be contraction, release of bound water, or a combination of these. The quality of the bonding agent is not limited to the above, as long as voids are generated between the aggregates.

As the inorganic binder, an inorganic binder containing a lime silicate binder as an essential component, such as cement, is considered.

Examples of the lime siliceous cement include ordinary Portland cement or white Portland cement.

White Portland Senmento contains very little iron and manganese in its components, and it is not necessary to frequently add a viscosity modifier such as water or a solvent to the coating material during coating work, etc. Therefore, not only various colors and patterns can be easily formed, but also changes can be easily made. Therefore, it is possible to perform a beautiful appearance finish.

From the above viewpoint, it is particularly preferable to use white Portland cement in the present invention.

Examples of the organic binder include those containing an aqueous polymer substance of resin and / or rubber as an essential component.

As these aqueous polymers of resins and / or rubbers, acrylic acid alkyl ester-acrylonitrile-methacrylic acid copolymer, isobutylene-maleic anhydride copolymer, butadiene-methacrylic acid copolymer, isoprene-acrylic are used. Acrylic acid ester-acrylic acid copolymer such as acid copolymer, butyl acrylate-acrylic acid copolymer or acrylic acid 2-ethylhexyl-methacrylic acid copolymer, butyl acrylate-methacrylic acid copolymer or acrylic acid Acrylic ester-methacrylic acid copolymer such as 2-ethylhexyl-methacrylic acid copolymer, carboxyl polyisobutylene, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, butadiene-styrene carboxyl elastomer, butadiene acryl Acrylonitrile carboxylated elastomer, butadiene - methacrylonitrile carboxyl elastomers, butadiene - vinylidene carboxyl chloride elastomer, polychloroprene carboxyl elastomers, emulsions such as polyethylene carboxyl elastomer or polyisobutylene carboxyl elastomers, aqueous solutions or dispersion and the like.

Further, not only the liquid polymer or the rubber-based aqueous polymer substance can be adopted from the beginning,
For example, a powdery polymer substance can be adopted.

For example, by adopting a vinyl acetate / veova copolymer resin or the like which is easily emulsified by adding water, it is possible to obtain a fireproof heat insulating coating having good workability.

Further, in the present invention, a functional group can be contained in the aqueous polymer material of resin and / or rubber.

As the functional group in the invention of the present application, a group which easily forms a ionic bond with a lime siliceous bonding agent or a cation or anion generated by a hydraulic reaction thereof, a group which easily forms a coordinate bond, or a hydrogen bond, A group such as a hydroxyl group that attracts and bonds with a cation due to an unpaired electron of oxygen is considered.

For example, at least one selected from a carboxyl group, a hydroxyl group, a methylol group, an acid amide group, a hydroxyethyl group, a hydroxypropyl group or an epoxy group.
Seeds can be adopted.

Specifically, for example, when the functional group is a carboxyl group (-COOH), this (-COOH) is ionized in water, and two hydrogen ions generated from two (-COOH) are 1 Since it replaces individual calcium ions and chemically crosslinks, heat resistance and watertightness are remarkably improved.

By adding a functional group to an aqueous polymer substance of resin and / or rubber, calcium silicate water produced by reacting metal ions in the lime siliceous bonding agent and the lime siliceous bonding agent with water. The aqueous polymeric substance and the lime siliceous binder are bound to each other by causing a cross-linking reaction with the calcium ion derived from the union and the calcium ion from the calcium hydroxide. As a result, this crosslinked product exerts a function as a relaxing agent between aggregates, and as compared with the conventional one, prevents cracking of the fire-resistant heat-insulating coating layer and serves as a coating agent not only for heat resistance but also for watertightness. The performance of is greatly improved.

When the cement is hardened, volume contraction occurs due to a hydration reaction and water evaporation. It is said that this volume shrinkage is about 8%, but the resin and / or rubber containing a functional group causes the metal ions in the lime siliceous bonding agent and the lime siliceous bonding agent to undergo a hardening reaction with water. The cured product has elasticity by causing a cross-linking reaction with the calcium ion derived from the calcium silicate hydrate thus produced and further with the calcium ion from the calcium hydroxide. Further, a film of a polymer substance is formed so as to cover the aggregate. As a result, the stress of shrinkage caused by the hydraulic reaction is relieved, and the occurrence of cracks during painting or when the temperature rises is prevented.

As a result, even under the severe conditions of being directly exposed to the flame, the refractory heat-insulating coating can be transformed into a porous state without cracking or cracking.

For example, a bonding agent containing an inorganic bonding agent (A) containing a lime siliceous bonding agent as an essential component and an organic bonding agent (B) such as an aqueous polymer substance of resin and / or rubber as an essential component. When adopting, the blending ratio of the bonding material (A + B) is 20 to 4 with respect to the weight of the fireproof heat insulating coating material.
It is desirable to set it to 0% by weight, preferably 25 to 35% by weight. If the content of the bonding material is less than 20% by weight, the strength of the fire-resistant heat-insulating coating layer decreases, and the waterproof property and the like decrease. On the other hand, if it exceeds 40% by weight, cracks and the like may occur during construction.

In this case, the blending ratio of the organic bonding material (B) such as the resin and / or rubber aqueous polymer substance varies depending on the type of the resin and / or rubber water polymer substance, but the fireproof heat insulating coating is used. The amount is preferably 1.5 to 5% by weight based on the total weight of the material.

If (B) is less than 1.5% by weight, sufficient voids cannot be formed between the aggregates. Further, it is impossible to secure the bonding strength between the aggregates, the adhesive strength to the object to be coated, and the strength of the coating layer itself.

On the other hand, if the content of (B) exceeds 5% by weight, the heat resistance is impaired, and the covering material shrinks greatly when it changes into a porous state, and the strength of the fireproof heat insulating coating layer in the event of a fire. Can't be maintained.

As the aggregate according to the present invention, various materials can be adopted as long as they have fire resistance. For example, it is preferable to mix at least one selected from silica sand containing silicon dioxide as a main component, stone powder containing calcium carbonate as a main component, slag, and lightweight aggregate.

In this case, the compounding ratio of at least one kind (C) selected from the above-mentioned aggregate is 45 to 70% by weight, preferably 50 to 65% by weight based on the total weight of the fireproof heat insulating coating material.
% By weight is desirable. If the content of (C) is less than 45% by weight, the coating layer may shrink significantly due to the temperature rise due to the flame. On the other hand, if the content of (C) exceeds 70% by weight, the voids when the binder is denatured become small, and the desired fireproof heat insulation performance may not be obtained, which is not desirable.

As described above, when silica sand or stone powder is added as an aggregate, calcium ions produced by the hydraulic reaction of the lime siliceous binder are adsorbed on silica to produce calcium disilicate. The disilicate layer and the aqueous polymer material of resin and / or rubber are silica sand,
It firmly bonds with at least one selected from stone powder, slag, or cement gel, is dense, has less volume shrinkage, and has less cracks during coating work.

Examples of the silica sand used in the present invention include natural silica sand, frog sand and artificial silica sand. However, artificial silica sand having a high purity of silicon dioxide and a small variation in particle size is desirable.

The above-mentioned natural silica sand is quartz sand having a particle size of about several tens to 100 mesh, and contains a small amount of feldspar, chert sand,
Furthermore, kaolin or the like may be mixed.

The above-mentioned frog-eyed silica sand contains quartz grains, feldspar, and kaolin minerals having a grain size of several tens of meshes or less as main components, and is accompanied by mica and a trace amount of heavy minerals.

The artificial silica sand is silica sand produced by crushing and classifying white silica stone or silicified rock and has a particle size of 0.01 m.
Mainly consists of fine quartz particles of m or less, with a trace amount of alum, kaolin, rutile, etc.

In the present invention, it is preferable that the maximum particle size of the silica sand used is such that it does not repel when it is spray-painted on a standing construction base material with an air gun or the like. Depending on the thickness and the relationship with other components, it is possible to mix up to several mm.

As an example of commercially available silica sand, powdery silica sand (# 100, # 200, # 25, manufactured by Chunichi Project Co., Ltd.) is used.
No. 0, # 300) and granular silica sand (Nos. 5 to 8).

In the present invention, the slag (slag) used as an aggregate refers to a non-metallic substance produced by melting a raw material for a mineral substance, and includes those produced by non-ferrous refining and those produced by iron refining, Examples include silicic acid slag and non-silicic acid slag. Of these, blast furnace slag suitable for mixing with silica sand is preferably used.

Recently, man-made slags are manufactured and sold, but these have high dispersibility because their components and particle size are adjusted, they have high strength, and they are excellent in fluidity. . Therefore, watertightness and durability are improved, and the quality is stable. In the present invention, any slag commercially available from any manufacturer can be used. The particle size used as the aggregate is the same as that of the silica sand.

Further, as an aggregate for further increasing the mechanical strength of the fireproof heat-insulating coating layer, an aggregate containing calcium carbonate as a main component can be an essential component. Although various aggregates are sold as the aggregate, any manufacturer's commercially available aggregate can be used in the present invention.

Here, the aggregate containing calcium carbonate as a main component means an aggregate containing 50% by weight or more of calcium carbonate, and not only consists of calcium carbonate but also other components generally mixed with cement. 50% by weight of aggregate
It is possible to include less than.

As a commercially available product of this calcium carbonate, stone powder (LW300, which is handled by Chunichi Project Co., Ltd.)
0), granular cold water stone, powdery cold water stone, and the like.

Although it is not clear why preferable results are obtained by using calcium carbonate as the aggregate as described above, calcium carbonate has a divalent calcium ion (cation) and a divalent carbonate ion (cation) on the particle surface. (Anions) are adsorbed, and the divalent cations and anions are ionically bonded to a resin and / or rubber containing a calcium disilicate or a functional group produced by a hydraulic reaction of a lime siliceous binder. As a result, it is understood that calcium carbonate serves as a nucleus to bond more strongly with the inorganic bonding agent.

Further, in the present invention, as the admixture of the lime siliceous binder, at least one selected from gypsum, magnesia cement, alumina cement, fine powder slag, fly ash, silica fume, pozzolan, or zeolite is contained. Can be made.

By adding these admixtures, the properties of the bonding agent can be adjusted.

Gypsum functions as a condensation retardant for Portland cement, and also expands after hardening to function as a filler.

Magnesia cement and alumina cement can be added as PH adjusters in order to adjust the reactivity and curability of the composition. In this case, water tightness,
The blending amount is determined in consideration of durability, crack prevention and heat resistance.

Fine powder slag, fly ash, silica fume, pozzolan, or zeolite does not react by itself with water and hardens, but when it is combined with a substance or the like generated by the hydration reaction of cement, A substance that does not easily dissolve in water is generated and the gaps in the aggregate are filled to improve the strength, durability, heat resistance and watertightness of the coating film.

The fine powder slag is obtained by quenching and crushing the molten slag coming out of the blast furnace, and has the property of solidifying by the stimulus when the surrounding is alkaline, improving the strength,
The effect of lowering the heat of hydration when cement is effective, improving chemical resistance, and suppressing alkali-aggregate reaction can be expected. In particular, in order to exert the above effects, it is preferable to use one having an average particle size of about 0.5 to 10 μm.

Examples of commercially available products of this fine powder slag include Essent and Essent Super 60 manufactured by Nippon Steel Chemical Co., Ltd.

Fly ash is fine particles of ash produced when pulverized coal is burned in a thermal power plant or the like, and has a smooth glassy spherical surface. Fly ash
By combining with the substance produced by the hydration reaction of cement,
Make a substance that is difficult to dissolve in water. Also, long-term strength, water tightness,
It contributes to the improvement of chemical resistance.

Silica fume is ultrafine particles produced during the production of silicon and, like fly ash, combines with a substance produced by the hydration reaction of cement to produce a substance which is hardly soluble in water. Since the particles are very fine, it is possible to obtain a dense structure, which contributes to the improvement of strength and durability.

Pozzolan and zeolite powder also reduce the heat of hydration and contribute to the improvement of strength.

In particular, by blending the above-mentioned fine-grained admixture, the adhesive strength of the fire-resistant heat-insulating coating to the object to be coated can be markedly improved.

Although the reason for this is not clear, the presence of fine particles having a size that is approximately similar to the mean free radius of the inorganic binder and / or the aqueous polymer substance makes it possible to use the inorganic binder and / or the aqueous polymer. As a result of restraining the degree of freedom of part of the main chain of the substance, the movement of the entire main chain is suppressed, and the acting force with adjacent molecules becomes the same relationship as the action between low molecules. It can be considered to further promote binding. In particular, the addition of a fine powder admixture containing particles having a particle size of 1 μm or less can markedly increase the adhesive strength. In addition, the fine powder additive material having a particle size of 1 μm or less is added to the fireproof heat insulating coating material in an amount of 5 to 1
By adding 0% by weight, the adhesiveness to the object to be coated, the shrinkage resistance when changing to a porous state, the crack resistance, etc. are significantly improved.

In addition, by incorporating the above-mentioned finely divided admixture, not only the structure of the coating layer itself becomes dense but also the amount of bound water held by these fine powders increases, as described above. By increasing the amount of water vapor generated when the quality is changed by a flame, the fire insulation is further improved.

Further, in the present invention, not only can the strength and crack resistance of the coating film itself be improved by blending two or more kinds of aggregates having different particle sizes, but also the fire insulation property can be greatly improved. Can be improved.

By mixing two or more kinds of aggregates having different particle sizes, the above effect can be obtained because the packing density of the aggregates becomes high and the gaps formed between the aggregates become small.
It is considered that this is because the strength of the coating film as a whole is increased as a result of the thickness of the film between the aggregates of the bonding agent being reduced. Further, by interposing the membrane of the polymer substance between the adjacent aggregates, a proper cushioning effect is given,
It is considered to impart elasticity to the coating film.

Moreover, since the density of the aggregate increases,
The mixing ratio of the above aqueous polymer substance is lowered as a whole,
Fire resistance is improved. Further, since the packing density of the aggregate can be significantly increased, it is possible to minimize the movement of the aggregate when the cement is altered and contracts. That is, it is possible to prevent the deterioration layer from shrinking, cracking, etc., and prevent the fireproof heat insulating coating layer from peeling off.

Further, since the packing density of the aggregate is increased, a complicated and fine continuous void extending from the deepest part of the altered layer to the surface of the coating layer is formed, and high heat insulation performance can be exhibited. Also,
It is considered that the passage of the gas generated by the deterioration of the bonding agent from the inside of the coating layer to the surface becomes fine, and the heat insulating effect is enhanced.

Further, at the interface with the object to be coated on which the coating film is formed, the film thickness of the bonding agent becomes thin and the amount of shrinkage upon curing becomes small. As a result, the adhesive strength with the object to be coated increases. It is supposed to do. Of course, it is considered that the particulate admixture described above also greatly contributes to the increase in the adhesive force.

As aggregates having different particle sizes, different aggregates having different particle sizes such as silica sand and calcium carbonate having different particle sizes can be adopted, or aggregates of the same kind but different in particle size can be used. It can also be adopted.

Particularly, considering the packing density between aggregates, it is preferable to mix two kinds of aggregates having an average particle size ratio of 8 to 12. When the ratio of the average particle size is 5 or less, the particles close to the order increase, and the packing density of the aggregate decreases. Therefore, it is not possible to expect an increase in the adhesive strength or the like with respect to the object to be coated, but also the contraction becomes large when the material becomes porous, and cracks or the like may occur.

The particle size of the aggregate is determined by the thickness of the coating film to be formed, the surface properties, the type of the base material, etc., but the maximum particle size of 500 μm or less provides a smooth surface. It becomes possible to form a thin coating film. Particularly, it is preferable to set the maximum particle size to 300 μm or less.

The fire-resistant heat-insulating coating material according to the present invention can be easily applied to the surface of the object to be restored by using an air gun or the like, and the fire-resistant heat-insulating coating layer can be easily formed.

Further, using the fire-resistant heat-insulating coating material according to the present invention, a plate-shaped molded body having a shape corresponding to the surface shape of the coated object is formed, and the plate-shaped molded body is attached to the surface of the coated object. You can also

Specifically, it is conceivable to form a plate-shaped structure having a desired shape by using another material and apply the fire-resistant heat insulating coating material according to the present invention to the surface thereof. Further, the plate-shaped structure can be formed by the fireproof heat insulating coating material itself according to the present invention. In this case, it is preferable to provide a reinforcing material inside for increasing the mechanical strength.

In order to improve the adhesiveness to the surface of the object to be coated, it is possible to construct a fireproof heat insulating coating composed of a plurality of layers in which the components of the bonding agent are changed.

For example, on the surface of the object to be coated, a fire-resistant joint layer containing a fire-resistant aggregate and a binder component having high adhesiveness to the surface of the object to be coated is formed by coating, while the outermost layer of the fire-resistant heat-insulating coating layer By forming the fireproof heat insulating layer by applying the above-mentioned fireproof heat insulating coating material to the above, it is possible to provide a fireproof heat insulating coating structure having high adhesive strength to the object to be coated.

The refractory bonding layer contains cement as a bonding agent and an aqueous polymeric substance of resin and / or rubber, and the blending ratio of the polymeric substance of resin and / or rubber is 5% by weight.
By setting the content to 10% by weight, it is possible to secure higher adhesive strength with respect to the surface of the steel frame or the like.

On the other hand, the refractory bonding layer and the refractory heat insulating layer are
Since only the blending ratio of the polymer substance is different, the affinity between these layers is extremely high. Therefore, the adhesion of the fireproof heat insulating coating layer to the object to be coated is improved.

Of course, the number of layers according to the present invention is not limited, and the compounding components are further changed between the refractory bonding layer and the refractory heat insulating layer according to the required fire resistance performance and the like. It is also possible to provide different layers.

The fireproof heat insulating coating material according to the present invention is
Since it can be easily applied by using an air gun or the like, it is possible to continuously change the compounding ingredients to form a fireproof heat insulating coating layer having desired characteristics.

For example, a layer using the fire-resistant heat-insulating coating material according to the present invention is formed on the surface layer, a layer having high waterproof performance and weather resistance is formed on the intermediate layer, and a layer having high adhesiveness is formed on the surface of the object to be coated. By forming and continuously changing these compounding components, not only the fire-resistant heat-insulating coating layer, but also waterproof,
It is possible to form a protective film having both weather resistance and chemical resistance.

The fire-resistant heat-insulating coating layer using the fire-resistant heat-insulating coating material according to the present invention does not necessarily have to be formed on the outermost side, and may be provided on the intermediate layer as necessary.

[0131]

The operation of the fireproof heat insulating method according to the present invention will be specifically described below with reference to FIGS. 1 and 2.

1 and 2 schematically show the structure and action of the fireproof heat insulating coating material according to the present invention, and FIG. 2 is an enlarged view of the main part of FIG.

As shown in FIG. 1, the fire-resistant heat-insulating coating material 1 according to the present invention forms a fire-resistant heat-insulating coating layer 3 on the surface of an object 2 to be coated.

When the surface of the fire-resistant heat-insulating coating layer 3 is exposed to the flame 4, as shown in the figure, the bonding agent 6 intervenes in the gap between the aggregates 5 having high heat resistance and joins these aggregates 5 together. Degradation starts from the surface area (hatched area).

At this time, as shown in FIG.
However, by undergoing alteration changes such as shrinkage and sublimation, the aggregate 5
Many fine voids 7 are formed therebetween. Then, these aggregates 5 are in a state of being joined by the residue 8 of the above-mentioned bonding agent and the like, and are porous.

Further, in FIG. 2, it can be seen that aggregates having different grain sizes are adopted. In this figure, in order to explain the action in an easy-to-understand manner, the aggregate 5 with a large grain size and the aggregate 5
The aggregate 5a having a particle diameter of about one fifth of the above is shown.

The portion indicated by symbol A is a porous altered region, and the portion indicated by symbol B is a non-altered region.

When the time of exposure to the flame 4 increases, the porous altered region A gradually advances to the inside of the refractory heat insulating coating layer 3 and the thickness increases by that amount, but the heat insulating property also increases accordingly. become. For this reason, the traveling speed of the porous alteration region A gradually decreases. Therefore, even when the fire-resistant heat-insulating coating layer 3 is directly exposed to the flame 4, high fire resistance and heat-insulating properties can be exhibited.

Further, considering the case where gas is generated when the bonding agent 6 is modified, the gas generated at the deepest part of the porous modified region A, that is, the boundary with the non-modified region is The surface of the refractory heat insulating coating layer is reached by wiping the voids 7 in the quality-altered area A. This flow of gas is in the opposite direction to the progress of heat by the flame 4, and delays the transfer of heat to the inside. Therefore, it is possible to exhibit even higher fire resistance insulation.

In particular, when a cement containing, as an essential component, a cement that reacts with water to form a hydrate is added as a binder, the bound water released when the hydrate is altered and decomposed is improved. It is considered that the latent heat of vaporization to become vapor is taken away and a large amount of water vapor flows toward the surface, so that the heat insulating property is further enhanced.

Although the alteration process of the above-mentioned bonding agent has not been clarified, it can be considered to be carbonization, oxidation, sublimation, shrinkage of resin components or the like, or a combination thereof, in addition to the release of bound water such as cement.

[0142]

Embodiments of the present invention will be specifically described below.

Table 1 shows the compounding components of the fire-resistant heat-insulating coating material according to the present invention adopted in the following examples.

[0144]

[Table 1]

Example 1

In this example, first, a fireproof performance test was conducted in order to show the basic performance of the fireproof heat insulating coating material according to the present invention. As a fireproof performance test, as shown in FIG. 3, the fire-resistant heat-insulating coating material 1 composed of the compounding components shown in Table 1 was applied to the asbestos slate material 10 with a thickness of 3 mm, and the JIS A1321
A surface flame retardant performance test based on 6-1975 was conducted.

In Table 1, calcium carbonate used as an aggregate has an average particle size of about 300 μm and 30 μm.
The same amount of stone powder of m was mixed and used. Silica sand was used as the silicon dioxide, and the average particle size was about 8 μm.

Finely powdered slag was used as an additive. The specific surface area of this fine powder slag is about 6000 square cm / g. The fine powder slag contained about 6% of particles having a particle size of 1 μm or less.

The flame-retardant performance test according to this example was carried out by applying about 40 to the surface of the fire-resistant heat-insulating coating material 1 according to the present invention applied to a base material.
A temperature load of 0 ° C. is applied to evaluate smoke resistance, afterflame, generation of toxic gas, melting cracks of the coating material, and the like to evaluate flame resistance.

Test results

Regarding the judgment items of JIS A13216-1975, almost no smoke was generated (smoke coefficient of 1.5 _{C A} or less), the afterflame time was 0, there was no harmful deformation in fire prevention, there was no melting over the entire thickness, and cracks occurred. There wasn't.

From the above test results, JISA13216-
In the surface flame retardancy performance test based on 1975, flame retardancy 1
It has been found that it has a grade, that is, performance recognized as an incombustible material.

Example 2

Next, a waterproof performance test was carried out to evaluate the basic performance of the fire-resistant heat-insulating coating material comprising the compounding ingredients shown in Table 1 as a protective coating.

A fireproof heat insulating coating material containing the components shown in Table 1 was used in a cardboard box (length 250 mm, width 250 mm, height 35).
(0 mm) was applied to the inner surface with a thickness of about 5 mm, and after 1 hour, water was injected to a depth of 30 cm. As a result of observing the sample outdoors for about 5 months, no water leakage was found.

Test results

From the above test results, it can be seen that it has a very high waterproof performance and has sufficient performance as a rust-preventive coating for coating objects such as steel frames.

Example 3

In Example 3, a practical test was conducted on the assumption that the surface of the coating layer of the fireproof heat insulating coating material 1 was directly exposed to a high temperature flame. That is, in an actual fire, the surface temperature of the fire-resistant heat-insulating coating may be 1000 ° C. or higher. The purpose of this example is to prove that it functions sufficiently as a fireproof heat insulating coating even in such a case.

In this example, a refractory heat-insulating coating material composed of the compounding ingredients shown in Table 1 was formed to a thickness of 2 as shown in FIG.
A 10 mm thick iron plate 2 was applied and the surface thereof was directly exposed to the flame 4 of the gas burner.

The flame 4 of the gas burner has a temperature of about 800.degree.
It is considered to reach 1200 ° C or higher, and is a severe fireproof insulation performance test more than an actual fire.

After being exposed to the flame for about 5 minutes, the state of the fireproof heat insulating coating layer 3 was observed.

Test results

While the surface turned gray black and the surface became rough, the refractory insulation coating layer 3 melted,
There were no cracks, afterflame, or smoke. The temperature of the iron plate is about 100 ℃
Up.

After cooling, the particles of the aggregate 5 could be separated from the coating layer by scratching the surface that had been altered with a stainless steel spoon. From this, it can be seen that the surface-altered layer has been altered to be porous. The deteriorated layer, that is, the peelable depth was about 2 mm from the surface.

As is clear from this example, it is proved that the fireproof heat insulating coating material according to the present invention can sufficiently exhibit the fireproof heat insulating performance even when exposed to high temperature. In particular, the portion exposed to the flame is altered, but the altered layer does not spontaneously peel off from the fire-resistant heat-insulating coating layer, but is changed to a porous state. Moreover, the amount of shrinkage of the deteriorated layer is very small (0.5 mm in the thickness direction), and the surface is recessed into a substantially spherical shape without any cracks or the like. Moreover, no change is observed in the coating layers other than the above.

From the above test results, it can be seen that the fireproof heat insulating coating material according to the present invention exhibits fireproof heat insulating performance by a completely new mechanism.

Example 4

In this embodiment, as shown in FIG. 4, a fire-resistant bonding layer 15 having a strong adhesive force is formed by coating on the surface of the object 2 to be coated, and the fire-resistant bonding layer 15 is superposed on the fire-resistant bonding layer 15 to provide high fire resistance and heat insulation. The fire-resistant heat-insulating layer 3 provided is applied and formed. In addition, in the embodiment, the thickness of the refractory bonding layer is set to 3 mm and the thickness of the refractory heat insulating layer is set to 7 mm, and the coating target 2
An iron plate with a thickness of 5 mm was adopted.

The refractory joining layer 15 is formed of a refractory aggregate and a joining agent for joining the aggregates to each other. While the same aggregate as that used in the above-described embodiment is adopted, an aggregate having a large amount of resin component is adopted as the bonding agent.

In the examples, the adhesive strength to the surface of the object to be coated (iron plate) is increased by increasing the mixing ratio of the resin component in the refractory bonding layer 15 to 10%.

On the other hand, the refractory heat insulating layer 3 is the same as in the first embodiment.
And the fireproof heat insulating coating material described in Example 2 is adopted. In the two-layer structure in this embodiment, the refractory bonding layer 15 has at least the above-mentioned JISA1321-197.
It has the flame retardant heat insulation property of the flame retardant of the second grade. .

As shown in FIG. 3, even if the fireproof heat insulating layer is heated by the flame and the alteration reaches the inside of the fireproof bonding layer 15, the heat insulating performance of the fireproof heat insulating layer is high. The adhesive force to 2 is retained.
Therefore, it is possible to prevent the entire refractory heat insulating coating layer from peeling off for a long time.

Moreover, since the fireproof heat insulating layer 3 is applied to the coating object 2 through the fireproof bonding layer 15, the adhesive strength of the entire fireproof heat insulating coating is high. Therefore, the fireproof insulation coating does not peel off due to aging. Further, the high adhesive strength of the fireproof heat insulating layer 15 means that the fireproof heat insulating layer 15 has a high function as another coating layer such as waterproof performance, and also sufficiently functions as a waterproof coating layer and a weather resistant coating layer.

[0175]

[Effect] As is apparent from the above-described examples, the fire-resistant heat-insulating coating material according to the present invention is porous from the surface even if the fire-resistant heat-insulating coating material is directly exposed to a flame at a temperature higher than 1000 ° C. By changing into a shape, the fireproof heat insulating effect is exhibited while maintaining the adhesive force to the object to be coated.

That is, in addition to sufficiently solving the problem of the conventional fire-resistant heat-insulating coating material, such as peeling-off of the coating material during a fire, a fire-resistant heat-insulating method and a fire-resistant heat-insulating coating material which have never been provided are provided. It is a thing.

Moreover, since the strength of the coating layer itself is high and the adhesive strength to the object to be coated is high even after thick coating, the surface of the object to be coated can be coated by applying it in the same manner as a conventional paint. A high performance refractory insulation coating structure can be formed.

Further, the fireproof heat insulating coating material according to the present invention can be used to form a plate-shaped molded article such as a fireproof panel. In particular, a fire-resistant heat-insulating coating layer having a thickness of several mm can be formed on the surface of the panel to form a fire-resistant heat-insulating panel with high performance, and the surface texture can be made smooth, and the color etc. Since it can be easily added,
It can be easily applied not only to outer wall surfaces of building structures but also to fittings such as partitions and doors.

Further, the fireproof heat insulating coating material according to the present invention can be used not only as a surface coating material for a building structure, but also in a portion requiring various fireproof heat insulating functions.

For example, it can be widely used as a coating for exhaust gas or the like for exhausting high temperature gas in a factory or the like, a protective coating for a casing or the like for housing an internal combustion engine or the like.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an outline of a fireproof heat insulating method and a fireproof heat insulating coating material according to the present invention.

FIG. 2 is an enlarged view showing a main part of FIG. 1, and is a schematic cross-sectional view showing the operation of the fireproof heat insulating method and the fireproof heat insulating coating material according to the present invention.

FIG. 3 is a sectional view showing an embodiment according to the present invention.

FIG. 4 is a sectional view showing an embodiment according to the present invention.

[Explanation of symbols]

 1 Fireproof heat insulating coating 4 Flame 5 Aggregate 6 Bonding agent

Claims (16)

[Claims] 1. A fireproof heat insulating method using a fireproof heat insulating coating material, which comprises a fireproof aggregate and a bonding agent for joining the aggregates to each other. A refractory heat insulating method in which a void is formed between aggregates and the fire resistant heat insulating covering changes from its surface side to a porous state. 2. The refractory heat insulating method according to claim 1, wherein the bonding agent changes in quality while generating gas. 3. A fire-resistant heat-insulating coating material comprising a fire-resistant aggregate and a bonding agent for bonding the aggregates to each other, wherein the bonding agent is altered by being heated by a flame and is an aggregate. A fire-resistant heat-insulating coating material, characterized in that a component that creates voids between them is mixed. 4. The fire-resistant heat-insulating coating material according to claim 3, wherein the bonding agent generates a gas as it deteriorates. 5. The fire-resistant heat insulating coating material according to claim 3, wherein the bonding agent contains an inorganic bonding agent and / or an organic bonding agent. 6. The fire-resistant heat-insulating coating material according to claim 1, wherein the alteration is carbonization, oxidation, sublimation, shrinkage, release of bound water of the bonding agent or its compounding component, or a combination thereof. . 7. The fire resistant heat insulating coating material according to claim 3, wherein the inorganic bonding agent is an inorganic bonding agent containing a lime siliceous bonding agent as an essential component. 8. The refractory heat insulating coating material according to claim 7, wherein the lime siliceous cement is ordinary Portland cement or white Portland cement. 9. The fire resistant heat insulating coating material according to claim 3, wherein the organic bonding agent contains an aqueous polymer material of resin and / or rubber as an essential component. 10. An aqueous polymer of a resin and / or a rubber is an acrylic acid alkyl ester-acrylonitrile-methacrylic acid copolymer, isobutylene-maleic anhydride copolymer, butadiene-methacrylic acid copolymer, isoprene-acrylic acid. Acrylic ester-acrylic acid copolymer such as copolymer, butyl acrylate-acrylic acid copolymer or 2-ethylhexyl acrylate-methacrylic acid copolymer, butyl acrylate-methacrylic acid copolymer or acrylic acid 2 -Acrylic ester-methacrylic acid copolymer such as ethylhexyl-methacrylic acid copolymer, carboxyl polyisobutylene, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, butadiene-styrene carboxyl elastomer, butadiene acrylonitrile Carboxyl elastomer, butadiene-methacrylonitrile carboxyl elastomer,
The coating material according to claim 9, which is an emulsion, an aqueous solution or a dispersion of a butadiene-vinylidene chloride carboxyl elastomer, a polychloroprene carboxyl elastomer, a polyethylene carboxyl elastomer or a polyisobutylene carboxyl elastomer. 11. The binder comprises a white Portland cement and an aqueous polymer substance as essential components, and the solid content ratio of the aqueous polymer substance is 1.5 to 5 of the fireproof heat insulating coating material.
The fireproof heat-insulating coating material according to any one of claims 3 to 10, characterized in that it is set to a weight percentage. 12. An aggregate comprising at least one selected from silica sand containing silicon dioxide as a main component, stone powder containing calcium carbonate as a main component, a slag, and a lightweight aggregate. Item 12. A fireproof heat insulating coating material according to any one of items 11. 13. A fire-resistant heat-insulating coating layer is formed by applying the fire-resistant heat-insulating coating material according to any one of claims 3 to 12 to the surface of an object to be restored. Coating structure. 14. A plate-shaped molded body having a shape corresponding to the surface shape of an object to be coated is formed using the fire-resistant heat-insulating coating material according to any one of claims 3 to 12, and the plate-shaped molded body is formed. Is attached to the surface of the object to be coated, which is a refractory insulation coating structure. 15. A fire-resistant heat-insulating coating structure comprising a plurality of fire-resistant heat-insulating coating layers formed on a surface of a coated object, the fire-resistant aggregate being adhered to the surface of the coated object and the surface of the coated object. A fire-resistant heat-insulating coating, wherein a fire-resistant heat-insulating coating layer containing a highly adhesive binder component is formed by coating, and the fire-resistant heat-insulating coating material according to any one of claims 3 to 12 is applied on the outermost side of the fire-resistant heat-insulating coating layer. A refractory insulation coating structure characterized by having layers formed. 16. The refractory bonding layer comprises cement as a bonding agent and an aqueous polymeric substance of resin and / or rubber as essential components, and the blending ratio of the polymeric substance of resin and / or rubber is 5% by weight. A refractory insulation coating structure in which the blending ratio of the polymer substance of resin and / or rubber in the refractory insulation layer is set to 1.5 to 5% by weight while being set to 10% by weight.