JP2008184896A - Refractory member and its construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refractory member and its construction method capable of giving fire protecting and fire resisting abilities to joints of building members by means of an easy construction method. <P>SOLUTION: A refractory member 10 comprises a base material layer 11, a thermally expansive refractory layer 12 and a shock absorbing material layer 13. The thermally expansive refractory layer 12 is formed of a material capable of creating a refractory insulating layer as a result of an expansion of the material caused by heating. The base material layer 11 is preferably comprised of a thin metal sheet or an inorganic fibrous unwoven cloth, and its surface or a part of the surface is desired to be laminated with a pressure sensitive adhesive layer 14. The refractory member 10 is bent twice or more or is made round, and then it is inserted to a joining portion of each exterior wall finishing member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a fireproof member used for fireproofing or fireproofing applications, and in particular, a fireproof member that can be easily inserted into joints such as an outer wall panel of a building constructed in a fireproof district or the like and has stable fireproof performance. And its construction method.

In recent years, fire resistance and fire resistance have been required for members used for the inner and outer walls of general buildings. In connection with this, in addition to the water tightness conventionally required for the connection part (joint part) of the outer wall, fire prevention / fire resistance performance is required.
The fireproof and fireproof performance required for the joints on the outer wall is that there is no penetration of flames on the back surface, there are no cracks and other cracks through which the fire passes, and there are no gaps. The temperature rise at the joints is the highest from the initial temperature. Therefore, it is necessary that the average temperature is 180 ° C. or lower and the average is 140 ° C. or lower.

In general, a method of filling the joint portion with a non-combustible material such as rock wool or a ceramic blanket has been generally used in order to give fireproof / fireproof performance to the connecting portion (joint portion) of the outer wall. And in the method of filling rock wool,
Normally, a back-up material (polyethylene foam) is attached to the joint, and the steel column and beam are welded indoors with the sealant applied to the outside of the back-up material, and then rock wool is applied from the inside of the joint. Filling and filling the joints.

Further, as a conventional fireproof sealing material, 20 to 150 parts by weight of microencapsulated ammonium polyphosphate powder, 100 parts by weight of microencapsulated ammonium polyphosphate powder with respect to 100 parts by weight of a polyalkylene ether having a silicon-containing functional group capable of forming a silanol group by hydrolysis at the terminal, There is a fireproof sealing material containing 50 to 150 parts by weight of calcium powder and 0.1 to 10 parts by weight of a silanol condensation catalyst (see, for example, Patent Document 1).

Further, as the outer wall joint structure, the joint formed between the outer wall panels is sealed 1
A secondary waterproof gasket is attached to a central mounting portion projecting outward in the center of a parallel portion parallel to the outer wall panel of the frame, and a pair of secondary waterproof gaskets that seal between the frame and the inner surface of the outer wall panel There are those that are attached to both side attachment portions that are suspended from the parallel portion of the above (see, for example, Patent Document 2).

Furthermore, there is a fireproof joint material for buildings formed by forming a coating layer that forms a foamed flame retardant layer on heating on the surface of a base material. As the base material of the fireproof joint material, there are a base material made of a rigid material and a base material made of a flexible material. In some cases, the coating material is formed by impregnating a flexible base material (for example, see Patent Document 3).

JP-A-8-81674 (Claims) JP-A-8-209891 (FIG. 3) JP-A-8-158493 (Claims, FIG. 1)

By the way, in the method of filling rock wool, there is a problem that the filling work of rock wool is complicated, the variation of construction is large, and after construction, the filled rock wool is extracted by mischief. Moreover, since these rock wool and ceramic blanket itself are comprised from inorganic fiber, there existed a problem that an inorganic fiber scattered at the time of construction, and it impaired the health of the installer and gave a load to the environment.
In the method of filling rock wool, when welding steel columns and beams before rock wool is filled, the welding sparks enter the joints and the backup material may burn and cause a fire. It was.

In addition, the fireproof sealant described in Patent Document 1 requires a technique for the work, and if the construction is insufficient, the sealant may fall off during a fire and the flame may penetrate, and the sealant itself is very expensive. There was a problem that. Although the outer wall joint structure described in Patent Document 2 can be installed relatively easily, there is a problem that the gasket itself having fire resistance is very expensive.

Furthermore, when the fireproof joint material for construction described in Patent Document 3 uses a metal plate as the base material, the allowable capacity of the dimension with respect to the joint width is low, and the construction is difficult. For this reason, there is a method of press-fitting into the joint part while elastically deforming, but when the base material is a metal plate, a very large force is required to elastically deform in the length direction, so a jig etc. If it was not used, construction could not be performed, and there was a problem in workability. In addition, when the thickness of the metal plate is adjusted to facilitate the construction, when the outer wall material moves due to an earthquake or the like and the joint width becomes narrow, there is a problem that a gap cannot be formed following the deformation. On the other hand, when the base material is formed of a material having flexibility, in order to express its heat insulating performance and flame barrier performance, the coating layer has a slow expansion with respect to heat and is inferior in flame retardancy. If the width and thickness of the refractory joint material is small, the flame will come off, or it will start from the flexible base material, so it is necessary to greatly increase the width and thickness of the refractory joint material to be inserted.
The cost was raised. And since the base material of this refractory joint material does not have a buffering function, it cannot follow the dimensional change of the joint part due to daily temperature change, dimensional change due to earthquakes, etc., dimensional change over time, from the joint part There was also a risk of dropping out.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a fire-resistant member that can impart fire resistance and fire resistance to a joint part and is easy to construct. There is to do. And by providing a buffering function to the refractory member, there is no risk of dropping off even if the dimensions of the joints change, and when the joint spacing is narrowed, the close contact state can be stably maintained by the buffering function. A fire-resistant member can be provided. Another object of the present invention is to provide a construction method for a fire-resistant member that functions as a backup material for sealing the joint portion by inserting the fire-resistant member into the joint portion and is easy to construct.

In order to achieve the above object, a refractory member according to the present invention comprises a base material layer, a thermally expandable refractory material layer and a buffer material layer laminated on the base material layer, and the thermally expandable refractory material layer comprises: It expands by heating and can form a refractory heat insulating layer, and is formed in a flat plate shape. That is, a heat-expandable refractory material layer and a buffer material layer may be sequentially laminated on one surface of the base material layer. A buffer material layer may be laminated, but the base material layer is preferably located on the surface.

The thermally expandable refractory material layer is expanded by heating such as a fire to form a refractory heat insulating layer, and preferably has a volume expansion coefficient of 3 to 100 times after being heated.
The buffer material layer is not particularly limited as long as it has buffer properties, but the resin foam,
What consists of a nonwoven fabric or a woven fabric is preferable. As the base material layer, paper, woven fabric, non-woven fabric, film, wire mesh, metal thin plate, inorganic fiber non-woven fabric and the like are preferably used.

The refractory member of the present invention configured as described above can be easily folded because it can be folded in two and inserted into the joint between the outer wall panels. After insertion, the buffer material layer expands to close the joint. Therefore, since it functions as a backup material, it can be sealed easily by injecting caulking agent from the outside, preventing intrusion of rainwater and the like. When a joint is heated after a fire, etc., the heat-expandable refractory material expands and closes the joint even if the cushioning material layer or the base material layer burns out. It can prevent entering inside.

As another aspect of the fire-resistant member according to the present invention, a shock-absorbing material, a thermally expandable material layer that is laminated on the outer periphery of the shock-absorbing material and can be expanded by heating to form a fire-resistant heat insulating layer,
And a base material layer further laminated on the outer periphery of the thermally expandable material layer, and is formed in a columnar shape. That is, the heat-expandable refractory material layer and the base material layer are sequentially laminated on the outer periphery of the central buffer material. The heat-expandable refractory material layer and the base material layer may be laminated only on a half circumference or partially on the entire circumference of the buffer material.

The fireproof member of the present invention configured as described above can be easily inserted because it can be inserted into the joint between the outer wall panels in a crushed state, for example. Since it functions as a backup material, it can be easily sealed by injecting caulking agent from the outside. When a joint is heated in the event of a fire, etc., even if the cushioning material or base material layer is melted and carbonized and burnt down, the thermally expandable refractory material will thermally expand and close the joint, thus providing fire and fire resistance. Can be demonstrated.

Moreover, as a preferable specific aspect of the refractory member according to the present invention, the base material layer is made of a metal thin plate or an inorganic fiber nonwoven fabric, and metal foil or glass wool is preferable. According to this structure, since a base material layer can be made nonflammable, the fireproof performance of a fireproof member can be improved, and when an inorganic fiber nonwoven fabric is used, adhesiveness with a thermally expansible fireproof material layer can be improved.

Furthermore, as another preferable specific embodiment of the fireproof member according to the present invention, the base material layer is characterized in that an adhesive layer is laminated on the surface or a part of the surface. When the adhesive layer is laminated on the base material layer, when the refractory member is inserted into the joint portion of the outer wall material, the refractory member can be prevented from falling off from the joint portion, and an effect of secondary waterproofing can be expected. Waterproofness is further improved.

And the said heat-expandable refractory material layer contains the inorganic type fiber material in the inside, It is characterized by the above-mentioned. As the inorganic fiber material, glass cloth or the like is preferable,
When an inorganic fiber material is contained in the thermally expandable refractory material layer, the shape retention of the expanded heat insulating layer during heating can be improved, and the strength of the refractory member can be improved.

The construction method of the refractory member according to the present invention is a construction method in which the above refractory member is inserted into the joint portion of the outer wall material, and the refractory member is folded in two or more or rounded and inserted into the joint portion. It is characterized by doing. The construction method of the refractory member of the present invention configured as described above can be inserted into the joint part by folding the refractory member into two or more folds or rounding to a desired thickness, and the joint part intervals are not equal. Even in this case, it can be easily inserted without dropping by bending or rounding to increase the thickness. And construction such as injection of the caulking agent into the joint can be easily performed.

As can be understood from the above description, the fire-resistant member of the present invention expands the heat-expandable refractory material layer in the event of a fire to form a fire-resistant and heat-insulating layer, so that the joint is filled. The heat propagation is suppressed, and the temperature rise on the back surface can be suppressed. In addition, the presence of the base material layer can prevent fire due to welding sparks during construction, and it has been cumbersome until now by inserting it as a back-up material that is usually required when striking caulking. Construction such as rock wool is no longer necessary and construction is greatly facilitated. Furthermore, it is a material with excellent construction stability. And even if the dimension of the space | interval of a joint part changes with the buffering function of a fireproof member, since drop-off can be followed and a dimensional change can be tracked, fireproof performance can be exhibited over a long period of time.

Hereinafter, one embodiment of a fireproof member concerning the present invention is described in detail based on a drawing.
1 is a cross-sectional view of a refractory member according to the present embodiment, a cross-sectional view of a bent state or a rolled state, and FIG. 2 is a cross-sectional view of another embodiment of the refractory member and a cross-sectional view of the bent state 3 is a cross-sectional view of the main part in a state where the fire-resistant member of FIG. 1 is inserted into the joint portion of the outer wall panel, and FIG. 4 is a main part of the state in which the fire-resistant member of FIG. 3 is inverted and inserted into the joint portion. It is sectional drawing.

1 and 2, the refractory member 10 includes a base material layer 11, a heat-expandable refractory material layer 12 and a buffer material layer 13 laminated on the base material layer, and the heat-expandable refractory material layer 12 includes: It is made of a material that can be expanded by heating to form a refractory heat insulating layer. That is, a thermally expandable refractory material layer 12 is laminated on one surface of the base material layer 11, and this thermally expandable refractory material layer 1
It is comprised in the flat form with the laminated body which laminated | stacked the buffer material layer 13 on the surface of 2 further.
The refractory member 10 has a thickness of about 3 mm to about 30 mm, a width of preferably about several tens of mm, a length of several tens of centimeters to several tens of meters, and is stored or transported in a wound state.

And the refractory member 10 can be bent along the long side direction and can be rounded in the short side direction. FIG. 1b shows a folded state along the longitudinal direction, FIG. 1c shows a folded state, FIG. 1d shows a folded state, FIG. 1e.
Indicates a state rounded in the short side direction. Thus, in order to change the number of bends, the width of the refractory member 10 is cut by changing the width as shown by the two-dot line in FIG. 1a.

When the fireproof member 10 is used as a backup material and a secondary waterproof function is expected, it is 2 when the fireproof member 10 is used so that the base material layer 11 contacts the side surface of the joint.
Since it may be inferior to the next waterproof property, in order to improve the waterproof property of the surface of the base material layer 11, you may provide the adhesive layer 14 as shown in FIG. Such an adhesive layer 14 is
It is not necessarily required to be provided on the entire surface of the base material layer 11, and may be provided partially along the long side direction. As the pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive; butyl rubber or the like to which an appropriate tackifier such as petroleum resin is added is suitably used. As for the thickness of the adhesive layer provided in the base material layer 11, 0.1-2 mm is preferable. If it is less than 0.1 mm, it is difficult to obtain sufficient waterproofness. If it exceeds 2 mm, the flame resistance of the refractory member itself decreases.

The order in which the refractory members 10 are laminated is not particularly limited, and is composed of a laminate in which a heat-expandable refractory material layer 12 is laminated on one surface of the base material layer 11 and a buffer material layer 13 is laminated on the other surface. May be. The thermally expandable refractory material constituting the thermally expandable refractory material layer 12 preferably contains an inorganic fiber material to be described later.

The heat-expandable refractory material constituting the heat-expandable refractory material layer 12 is expanded by heating to form a refractory heat-insulating layer. For example, the volume after being heated for 30 minutes under a heating condition of 50 kW / m @ 2. If an expansion coefficient is 3-100 times, there will be no restriction | limiting in particular. If the volume expansion coefficient when the heat-expandable refractory material is heated as described above is less than 3 times, a thick heat-expandable refractory material layer is required to exhibit sufficient fire resistance performance, resulting in an increase in cost. If it exceeds twice, the strength of the refractory heat insulating layer formed by expansion due to heating is lowered, so that it tends to collapse.

As the thermally expandable refractory material, for example, “Fire Barrier” manufactured by 3M (a sheet material made of a resin composition containing chloroprene rubber and vermiculite, volume expansion coefficient: 3 times, thermal conductivity: 0.20 kcal / m · h · ° C.), “Meiji Hi-Cut” manufactured by Mitsui Kinzoku Co., Ltd. (sheet material comprising a resin composition containing polyurethane resin and thermally expandable graphite, volume expansion coefficient: 4 times, thermal conductivity: 0.21 kca1 / m · h) Commercially available products such as ° C) can be used, but those composed of thermoplastic resins or epoxy resins and inorganic fillers are preferred.

Examples of the thermoplastic resin include polyolefin resins such as polyethylene resin, polypropylene resin, poly (1-) butene resin, and polypentene resin; polystyrene resin, ABS resin, polycarbonate resin, polyphenylene ether resin, and acrylic resin. , Polyamide resin, polyvinyl chloride resin, phenol resin, polyurethane resin, polybutene, polychloroprene, polybutadiene, polyisobutylene, nitrile rubber, butyl rubber, petroleum resin and the like.
The resins may be used alone or in combination of two or more.

The epoxy resin is not particularly limited, but basically, an epoxy resin obtained by reacting an epoxy group-containing monomer with a curing agent is used. Examples of the monomer having an epoxy group include monomers such as a bifunctional glycidyl ether type, a glycidyl ester type, and a polyfunctional glycidyl ether type. Examples of the bifunctional glycidyl ether type monomer include polyethylene glycol type, polypropylene glycol type, neopentyl glycol type, 1,6-hexanediol type, trimethylolpropane type, bisphenol A type, bisphenol F type,
Examples of the monomer include propylene oxide-bisphenol A type and hydrogenated bisphenol A type.

Examples of the glycidyl ester type monomer include hexahydrophthalic anhydride type, tetrahydrophthalic anhydride type, dimer acid type, p-oxybenzoic acid type monomer, and the like. Examples of the polyfunctional glycidyl ether type monomers include phenol novolac type, orthocresol novolak type, DPP novolak type, dicyclopentadiene / phenol type monomer, and the like. These monomers having an epoxy group may be used alone or in combination of two or more.

As the curing agent constituting the epoxy resin, a polyaddition type or a catalyst type is used. Examples of polyaddition type curing agents include aliphatic polyamines or modified amines thereof, aromatic polyamines, acid anhydrides, polyphenols, polymercaptans, and the like. Examples of the catalyst-type curing agent include tertiary amines, imidazoles, and Lewis acid complexes. The curing method of the epoxy resin is not particularly limited, and can be performed by a known method. A hardening | curing agent may be used independently and 2 or more types may be used together.

The monomer having an epoxy group and the curing agent may be blended at an arbitrary ratio, but the blending ratio at which the equivalent of the monomer having the epoxy group and the curing agent is equal from the stability of the mechanical properties of the thermally expandable material. desirable. In addition, other resins may be added to the epoxy resin. If the amount of other resin added increases, the effect of the epoxy resin will not be manifested, so the amount of other resin added to the epoxy resin 1 is preferably 5 (weight ratio) or less. Epoxy resin has a flame retardant, as long as it does not impair the physical properties of the thermally expandable refractory material.
Antioxidants, metal damage inhibitors, antistatic agents, stabilizers, crosslinking agents, lubricants, softeners, pigments, tackifying resins, and the like may be added. Furthermore, flexibility may be imparted to the epoxy resin.

Examples of the method for imparting flexibility include the following methods.
(1) Increase the molecular weight between cross-linking points.
(2) Reduce the crosslinking density.
(3) Introducing a soft molecular structure.
(4) A plasticizer is added.
(5) Introducing an interpenetrating network (IPN) structure.
(6) Disperse and introduce rubber-like particles.
(7) Introducing microvoids.

The method (1) is a method in which the distance between the cross-linking points is increased by causing a reaction using an epoxy monomer having a long molecular chain and / or a curing agent in advance, thereby expressing flexibility. For example, polypropylene diamine or the like is used as the curing agent. Said (
The method 2) is a method in which flexibility is exhibited by reducing the cross-linking density in a certain region by reacting with an epoxy monomer and / or a curing agent having few functional groups. As the curing agent, for example, a bifunctional amine, and as an epoxy monomer, for example, a monofunctional epoxy is used.

The method (3) is a method for expressing flexibility by introducing an epoxy monomer having a soft molecular structure and / or a curing agent. Examples of the curing agent include aliphatic amines, heterocyclic diamines, and epoxy monomers such as alkylene diglycol diglycidyl ether. The method (4) is a method in which a non-reactive diluent such as DOP, tar, petroleum resin, or the like is added as a plasticizer. The method (5) is a method of expressing flexibility with an interpenetrating network (IPN) structure in which a resin having another soft structure is introduced into the crosslinked structure of the epoxy resin.

The method (6) is a method in which liquid or granular rubber particles are compounded and dispersed in an epoxy resin matrix. Polyester ether or the like is used as the epoxy resin matrix. The method (7) is a method of expressing flexibility by introducing microvoids of 1 μm or less into the epoxy resin matrix.
A polyether having a molecular weight of 1000 to 5000 is added as an epoxy resin matrix. By adjusting the flexibility of the epoxy resin, a flexible sheet can be formed. Use of an epoxy resin as the resin component is preferable because the thermally expandable refractory material after expansion has a cross-linked structure, so that shape retention is excellent and the thickness of the thermally expandable refractory material layer can be reduced.

As for the compounding quantity of the inorganic filler in a thermally expansible refractory material, 50-500 weight part is preferable with respect to 100 weight part of resin components (thermoplastic resin or epoxy resin). When the blending amount of the inorganic filler is less than 50 parts by weight, the amount of residue after combustion is reduced, so that a sufficient fireproof heat insulating layer is not formed, and the blending ratio of the combustible material is increased, so that the flame retardancy is lowered.
Moreover, when the compounding quantity of an inorganic filler exceeds less than 500 weight part, since the compounding ratio of a resin component will reduce, a moldability will fall.

Among inorganic fillers, it is preferable that 20 to 400 parts by weight of a layered inorganic substance is used. If the amount of layered inorganic material used is less than 20 parts by weight, the expansion ratio will be insufficient, so that sufficient fireproofing / fireproof performance will not be obtained, and if it exceeds 400 parts by weight, the cohesive force will be insufficient. Sufficient strength cannot be obtained. The layered inorganic material is not particularly limited as long as it expands when heated, and examples thereof include vermiculite, kaolin, mica, neutralized thermally expandable graphite, and the like. Among these, neutralizing heat-expandable graphite having a low foaming start temperature is preferable. The heat-expandable graphite subjected to neutralization treatment is obtained by neutralizing heat-expandable graphite, which is a conventionally known substance.

Thermally expandable graphite is a powder of natural scale graphite, pyrolytic graphite, quiche graphite, etc., inorganic acid such as concentrated sulfuric acid, nitric acid, selenic acid, concentrated nitric acid, perchloric acid,
Graphite intercalation compound produced by treatment with a strong oxidizing agent such as perchlorate, permanganate, dichromate, hydrogen peroxide, etc., and a crystalline compound that maintains the layered structure of carbon . The thermally expandable graphite obtained by acid treatment as described above is further neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound, etc. Graphite is used.

The aliphatic lower amine is not particularly limited, and examples thereof include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, and butylamine. The alkali metal compound and the alkaline earth metal compound are not particularly limited, and examples thereof include hydroxides such as potassium, sodium, calcium, barium, and magnesium, oxides, carbonates, sulfates, and organic acid salts. It is done.

The particle size of the neutralized thermally expandable graphite is preferably 20 to 200 mesh. If the particle size is smaller than 200 mesh, the degree of expansion of graphite is small and a predetermined fireproof heat insulating layer cannot be obtained. If the particle size is larger than 20 mesh, there is an advantage that the degree of expansion of graphite is large, but it is kneaded with a resin binder. In this case, dispersibility deteriorates, and physical properties are inevitably lowered. Commercially available products of neutralized thermally expandable graphite include, for example, “GREP-EG” manufactured by Tosoh Corporation and “GRAFGUAR” manufactured by UCAR CARBOON
D "and the like.

Examples of inorganic fillers other than layered inorganic materials include silica, diatomaceous earth, alumina,
Zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide,
Antimony oxide, ferrites, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, barium carbonate, dosonite, hydrotalcite, calcium sulfate, barium sulfate, gypsum fiber, Calcium silicate, talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite, imogolite, sericite, glass fiber, glass beads, silica-based balun, aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon fiber , Carbon balun, charcoal powder, various metal powders, potassium titanate, magnesium sulfate, lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless fiber, zinc borate, each Magnetic powder, slag fibers, fly ash, and the like. These may be used independently and 2 or more types may be used together.

Among the inorganic fillers, metal carbonates such as calcium carbonate and zinc carbonate that play an aggregate role in particular; water-containing inorganic substances such as aluminum hydroxide and magnesium hydroxide that give an endothermic effect when heated in addition to the aggregate role preferable. The combined use of the hydrous inorganic substance and the metal carbonate is considered to greatly contribute to the improvement of the strength of the combustion residue and the increase of the heat capacity. Furthermore, the water-containing inorganic substance is endothermic because of the water produced by the dehydration reaction during heating, the temperature rise is reduced and high heat resistance is obtained, and the oxide remains as a heating residue, which is an aggregate. It is particularly preferable in that the residual strength is improved by working as follows. Among them, magnesium hydroxide and aluminum hydroxide have different temperature ranges that exhibit dehydration effects, so when used together, the temperature range that exhibits dehydration effects becomes wider, and more effective temperature rise suppression effects can be obtained. It is preferable to do.

Furthermore, in order to improve the flame retardancy of the thermally expandable refractory material, a phosphorus compound may be used in combination with the inorganic filler. Metal carbonates such as calcium carbonate and zinc carbonate are considered to promote expansion by reaction with a phosphorus compound. In particular, when ammonium polyphosphate is used as the phosphorus compound, a high expansion effect is obtained. It also acts as an effective aggregate and forms a highly shape-retaining residue after combustion.

As a particle size of an inorganic filler, 0.5-100 micrometers is preferable, More preferably, it is about 1-50 micrometers. In addition, it is more preferable to use a combination of an inorganic filler having a large particle size and an inorganic filler having a small particle size. By using the combination, a high filling is achieved while maintaining the mechanical performance of the thermally expandable refractory material layer. Can be realized.

As a commercial product of a hydrous inorganic substance, for example, as aluminum hydroxide, a particle size of 1 μm
m “Heidilite H-42M” (manufactured by Showa Denko KK), “Heidilite H-31” (manufactured by Showa Denko KK) having a particle size of 18 μm and the like. Moreover, as a commercial item of calcium carbonate, for example, “Whiteon SB red” having a particle size of 1.8 μm (manufactured by Shiraishi Calcium Co., Ltd.), “Whiteon BF300” having a particle size of 8 μm (manufactured by Bihoku Flour Chemical Co., Ltd.), etc. It is done.

Examples of phosphorus compounds include red phosphorus; sodium phosphate, potassium phosphate,
Examples thereof include metal phosphates such as magnesium phosphate; ammonium polyphosphates such as ammonium polyphosphate and melamine-modified ammonium polyphosphate. Examples of commercially available products of ammonium polyphosphate include “Exolit 422” and “Exolit 462” manufactured by Clariant Co., Ltd .; “Sumisafe P” manufactured by Sumitomo Chemical Co., Ltd .;
“Terrage C60”, “Terrage C70”, “Terrage C80” manufactured by Chisso Corporation
Or the like.

As a method for producing the above-mentioned thermally expandable material, after preparing a kneaded product of an epoxy resin composition, it may be integrated with a net or mat made of a non-combustible (inorganic) fibrous material at the stage of molding. By improving the fire resistance, fire resistance is improved. The kneaded product of the epoxy resin composition is obtained by kneading each of the above components using a known apparatus such as a single-screw extruder, a twin-screw extruder, a Banbury mixer, a kneader mixer, a kneading roll, a reiki machine, and a planetary stirrer. Can be obtained. In addition, kneaded products of epoxy group-containing monomer or curing agent filler are prepared separately by the above method, and each kneaded product is supplied with a plunger pump, a snake pump, a gear pump, etc. Mixing may be performed with a mixer or the like.

As the molding method, for example, a net or mat made of an epoxy resin kneaded material and a non-combustible fiber material is impregnated or laminated on the epoxy resin by press molding, roll molding, coater molding, etc., and then the epoxy resin is cured. The method of letting it be mentioned. Examples of the method by press molding include a method in which a net or mat made of a non-combustible fibrous material and an epoxy resin composition are put into a mold using a pressure press machine, and the molding is performed by pressurization. Examples of the method by roll forming include a method of simultaneously inserting and molding a net or mat made of an epoxy resin and a non-combustible fibrous material between rolls using SMC.

The method by the coater molding is, for example, a method in which a roll or blade coater is used to simultaneously insert and form a net or mat made of an epoxy resin and a non-combustible fibrous material in the gap between the roll or blade and the roll or base. Is mentioned. The curing method of the epoxy resin is not particularly limited, heating with a press or roll,
Or it can carry out by well-known methods, such as the method of performing shaping | molding and hardening | curing etc. in a heating furnace in a molding line continuously, or the method of throwing into a heating furnace after shaping | molding.

Furthermore, a laminate of a net or mat made of a non-combustible fibrous material and a base material layer,
You may laminate | stack on the sheet | seat surface which consists of an epoxy resin composition. As a laminated body, the laminated body of an aluminum glass cloth or a poly film and a glass cloth etc. are mentioned, for example. The net or mat made of non-combustible fibrous material is preferably made of inorganic fiber or metal fibrous material. For example, glass fiber woven fabric (glass cloth, roving cloth, continuous strand mat, etc.) or non-woven fabric ( A chopped strand mat or the like), a woven fabric (ceramic cloth or the like) or non-woven fabric (ceramic mat or the like) of a ceramic fiber, a woven or non-woven fabric of carbon fiber, a net or a mat formed from a lath or a wire mesh is preferably used.

Of these nets or mats, a glass fiber woven or non-woven fabric is preferred from the viewpoint of ease and cost when producing a heat-expandable material, and a glass cloth is more preferred because glass is not scattered at the time of production. . Furthermore, the glass cloth may be treated with a melamine resin, an acrylic resin, or the like because the handleability is improved and the adhesion with the epoxy resin is improved. The net or mat made of a non-combustible fibrous material may be impregnated in a sheet made of an epoxy resin composition or may be laminated on the surface. A net or mat made of a non-combustible fibrous material remarkably improves the shape retention after expansion of the thermally expandable material, and exhibits the effect of preventing the expansion layer from falling off or being lost during a fire.

Net or mat made of non-combustible fibrous material has a weight of 5 to 2
000 g. When the weight per 1 m 2 is less than 5 g, the effect of improving the shape retention of the expanded heat insulating layer is lowered, and when it exceeds 2000 g, the sheet becomes heavy and the construction becomes difficult. More preferably, it is 10 to 1000 g. The thickness of the net or mat made of non-combustible fibrous material is preferably 0.05 to 6 mm. 0.0 thickness
When the thickness is 5 mm or less, the thermally expandable material cannot withstand the expansion pressure when it expands. On the other hand, when the thickness exceeds 6 mm, deformation such as notch or bending becomes difficult when the thermally expandable material is applied. More preferably, it is 0.1-4 mm.

In the case of a net made of noncombustible fibrous material, the opening is 0.1 to 50 mm.
It is preferable that When the opening is less than 0.1 mm, the thermal expansion material cannot withstand the expansion pressure when it expands. Moreover, when it exceeds 50 mm, the effect which improves the shape retainability of an expansion | swelling heat insulation layer will become low. More preferably, 0.2-30 mm
It is. When the epoxy resin composition is impregnated with a net or mat made of a non-combustible fibrous material, the position of the net or mat may be any position in the thickness direction of the thermally expandable material, but the shape of the expanded layer is maintained. In order to further improve the property, the surface side exposed to a fire is preferable.

As the base material layer 11, commonly used materials are used, such as paper, woven fabric, non-woven fabric,
A film, a wire net, especially a metal thin plate or an inorganic fiber nonwoven fabric is suitably used.
As the paper, known materials such as kraft paper, Japanese paper, K liner paper, release substrate, etc. can be used. Non-combustible paper highly filled with aluminum hydroxide or calcium carbonate;
A flame retardant paper containing a flame retardant or having a flame retardant applied to the surface can improve the non-flammability and can be used more suitably.

As the non-woven fabric, wet non-woven fabric, long-fiber non-woven fabric made of polypropylene, polyester, nylon, cellulose fiber or the like can be used. Among these, inorganic fiber nonwoven fabrics are preferably used because they have high flame retardancy and contribute to fire resistance. As the inorganic fiber nonwoven fabric, rock wool, ceramic blanket, ceramic sheet, ceramic paper, ceramic wool, glass wool, glass wool mat, inorganic fiber paper using glass fiber, carbon fiber paper and the like are preferably used.

As the film, resin films such as polyethylene, polypropylene, polyamide, polyester, nylon, and acrylic can be used. As the wire mesh, a metal lath or the like can be used in addition to a commonly used wire mesh. Moreover, the base material layer 11 may use the laminated body of these base materials, for example, a polyethylene film laminated nonwoven fabric, a polypropylene laminated nonwoven fabric, an aluminum foil laminated paper, an aluminum glass cloth etc. are mentioned.

Examples of the metal thin plate include metal foil such as iron plate, stainless steel plate, galvanized steel plate, aluminum zinc alloy plated steel plate, aluminum plate, aluminum glass cloth, aluminum craft, copper foil, and gold foil. The thickness of the metal sheet is 0.003 to 1m
m can be preferably used. When the thickness is 1 mm or more, the workability and workability are remarkably lowered as a fireproof member. Among the laminated materials, aluminum foil and laminated materials such as glass cloth, glass mat, and carbon fiber are advantageous in terms of fire resistance because of excellent heat reflectivity of aluminum, and heat resistance of glass cloth, glass mat, and carbon fiber. Thus, the heat-expandable refractory material can be protected and can be used particularly preferably.

The thickness of the aluminum foil of the aluminum glass cloth is preferably 5 μm or more in consideration of handling. Further, glass cloth, glass mat, carbon fiber, etc. preferably have a weight per unit area of 5 g / m @ 2, and if it exceeds 5 g / m @ 2, it is inferior in terms of protecting the heat-expandable refractory material. The aluminum foil, the glass cloth, the glass mat, and the carbon fiber are heat-laminated with polyethylene or laminated using a conventionally known adhesive.

The heat-expandable refractory material layer 12 is formed by molding a resin composition containing a resin component such as an epoxy resin or a thermoplastic resin and an inorganic filler into a sheet shape by calendar molding, extrusion molding, press molding, or the like. Obtainable.

The buffer material constituting the buffer material layer 13 is not particularly limited as long as it has buffer properties, but is preferably made of a resin foam, a nonwoven fabric or a woven fabric. Examples of the resin foam include closed-cell foams such as polyethylene foams, polyolefin foams such as polypropylene foams, polystyrene foams, polyurethane foams, phenol resin foams, and isocyanurate foams. The body is preferably used. The expansion ratio is preferably in the range of 5 to 100 times. These foams may be subjected to a flame retardant treatment. Two or more kinds of materials may be laminated.

As the nonwoven fabric, for example, an organic fiber nonwoven fabric such as a polyester nonwoven fabric, a polypropylene nonwoven fabric, a polyethylene nonwoven fabric, and an acrylic resin nonwoven fabric; and an inorganic fiber nonwoven fabric such as ceramic blanket, rock wool, and glass wool are preferably used.
The inorganic fiber non-woven fabric may be wrapped with a resin film such as polyethylene in order to enhance the adhesion with the thermally expandable refractory material having a watertight elastic material. Examples of the woven fabric include organic fiber woven fabrics such as polyester woven fabrics, polypropylene woven fabrics, and acrylic woven fabrics, and inorganic fiber woven fabrics made of ceramic fibers, rock wool fibers, glass fibers, and the like.

In the refractory member 10, a conventionally known method can be used as a method of laminating the heat-expandable refractory material layer 12 and the buffer material layer 13. For example, a heat-expandable refractory material is extrusion-coated on a buffer material. And a method of laminating using an adhesive, and the like. Further, the lamination of the heat-expandable refractory material layer 12 and the base material layer 11 is the heat-expandable refractory material layer 1.
And a method of laminating 2 by extrusion coating on the base material layer 11 and a method of laminating using an adhesive. Among these, if a thermally expandable refractory material having tackiness is used, it can be laminated without using an adhesive, so that it is particularly preferably used.

The thickness of the thermally expandable refractory material layer 12 is set according to the width of the joint portion of the outer wall material, and is preferably about 1 to 50% of the width of the joint portion. When it becomes less than 1% of the width of the joint part, the fire resistance performance for preventing the penetration of the flame to the back surface of the refractory member 10 is lowered, and when it exceeds 50% of the width of the joint part, the waterproof performance and fire resistance performance are Although good, it causes an increase in cost.
The thickness of the buffer material layer 13 is set according to the width of the joint portion, and is 10 to 10% of the width of the joint portion.
About 300% is preferable. When it becomes less than 10% of the width of the joint portion, the buffering function when filling the joint portion is lowered, and when it exceeds 300% of the width of the joint portion, workability when filling the joint portion is lowered.

Regarding the construction method of the fireproof member 10 of the present embodiment configured as described above, FIG.
, 4 will be described. A building 1 such as a house is provided with a square steel pipe 2 as a casing, and a plurality of ALC plates 3 are fixed as outer wall materials on the outside thereof, and adjacent ALC
A joint portion 4 having a gap of about 20 mm is formed between the plates 3. The ALC plate 3 is fixed with a bolt 7 using an Inazuma plate 6 through an L angle 5 welded to the square steel pipe 2. The fireproof member 10 of the present invention is inserted into the joint portion 4 of the outer wall material. Of course, H-shaped steel or other shapes of steel may be used instead of the square steel pipe. Reference numeral 9 between the joint portion 4 and the square steel pipe 2 is a temperature measurement position in a fire resistance test described later.

When inserting and constructing the refractory member 10 into the joint portion 4 formed by two adjacent ALC plates 3, the base material layer 11 is bent in a U shape with the base material layer 11 as the outside, and the base material layer 11 is made of the ALC plate 3. By inserting and filling the joint portion 4 so as to contact the side surface, excellent waterproofness and fire resistance are exhibited. When the pressure-sensitive adhesive layer 14 is provided on the surface of the base material layer 11, if the refractory member 10 is pasted on one ALC plate 3 that forms the joint portion 4 in advance, the construction becomes easier.

When inserting the refractory member 10 into the joint part 4, as shown in FIGS. 1a to d, the refractory member is folded in two or more or rolled up as shown in FIG. 1e. By bending or rolling in this way, the repulsive force of the cushioning material layer 13 is utilized, so that no deviation occurs after the construction, and the insertion is easy and the refractory member itself is manufactured. It becomes easy and leads to cost reduction. Further, even if the width of the joint portion 4 is not constant, the thickness of the refractory member 10 can be easily changed, so that it can be reliably inserted into the joint portion 4 and can be prevented from falling off. In addition, when inserting and constructing the refractory member 10 in the joint part 4, as shown in FIG. After inserting the refractory member 10 into the joint portion 4, using this as a backup material, the caulking agent 8 is injected into the surface side to complete the construction of the joint portion 4.

The refractory member 10 of the present embodiment is a heat-expandable refractory material even if the buffer material layer 13 or joint material (sealing material, gasket, etc.) contracts due to heat or burns out to form a gap during a fire. The layer 12 expands to form a fire-resistant and heat-insulating layer and fills the gap, thereby preventing flame and smoke from entering from the joint portion 4 and exhibiting excellent fire and fire resistance performance.

Another embodiment of the present invention will be described in detail with reference to FIGS. FIG. 5 is a cross-sectional view of another embodiment of the refractory member according to the present invention, and FIG. 6 is a cross-sectional view of the refractory member of FIG. 5 attached to the outer wall panel. In addition, this embodiment is different from the above-described embodiment in that the refractory member includes a central buffer material, a thermally expandable refractory material layer laminated on the outer periphery thereof, and a base material layer further laminated on the outer periphery thereof. It has a cylindrical shape or a round bar shape. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

In FIG. 5a, the refractory member 20 comprises a central cushioning material 21, a thermally expandable refractory material layer 22 laminated on the outer periphery thereof, and a base material layer 23 further laminated on the outer periphery thereof. It has a round bar shape, buffer material 21, thermal expansion refractory material layer 22,
And the same thing as the above-mentioned embodiment is used for substrate layer 23. That is, the buffer material 21 has a buffer property, the thermally expandable refractory material layer 22 expands about 3 to 100 times by heating such as a fire to form a refractory heat insulation layer, the base material layer 23 is paper, A woven fabric, a nonwoven fabric, a film, a wire mesh, a metal thin plate, an inorganic fiber nonwoven fabric, etc. are used.

The refractory member 20 configured as described above is obtained by extruding a polyethylene foam having a substantially circular cross section to obtain a cushioning material 21 at the center, and the foam cushioning material 2 thus obtained is obtained.
After laminating a thermally expandable refractory material layer 22 in which a thermally expandable refractory material is extrusion-coated around 1,
Further, it has a three-layer structure in which a base material layer 23 such as an aluminum glass cloth is laminated on its surface by self-adhesiveness, and has a columnar or round bar shape with a diameter of about 10 to 30 mm.

Thus, in the fire resistant member 20 of the present embodiment, the lamination method of the buffer material 21 and the thermally expandable refractory material layer 22 is, for example, the central buffer material 21 and the outer peripheral thermally expandable refractory material layer 22. Is preferable to coat the surface of the buffer material with a thermally expandable refractory material. Moreover, the lamination | stacking with the heat | fever expansible refractory material layer 22 and the base material layer 23 includes the method of carrying out extrusion coating of the heat expansible refractory material on a base material layer, the method of laminating | stacking using an adhesive agent, etc. . The fire-resistant member 20 has a cylindrical shape of a thermally expandable refractory material layer 22 and a base material layer 23 filled with the buffer material 21 so that the manufacturing and construction are easily performed. be able to.

Moreover, as shown in FIG. 5 b, the thermally expandable refractory material layer 22 </ b> A and the base material layer 23 </ b> A may be formed on the lower half of the buffer material instead of being laminated on the entire outer periphery of the buffer material 21. This fire-resistant member 20A was obtained by press-bonding a heat-expandable fire-resistant material obtained by previously laminating a heat-expandable fire-resistant material layer 22A and a base material layer 23A to the central buffer material 21 by roll forming. Not only roll forming, but also buffer material 21 by adhesion
The heat-expandable refractory material layer 22A and the base material layer 23A may be fixed to the lower half.
This method can also be used to obtain the refractory member of FIG. 5a.

In this embodiment, the fireproof members 20, 20 </ b> A are flattened according to the width of the joint part 4 of the ALC plate 3 that is the outer wall material to be inserted, and are inserted into the joint part 4.
In this way, the refractory member 2 so that the base material layers 23, 23 </ b> A are in contact with the side surface of the joint portion 4.
By filling 0, 20A, excellent waterproof properties are expressed. And joint part 4
The caulking agent 8 is injected into the surface side using the refractory members 20 and 20A supported on the surface as a backup material, and the construction of the joint portion 4 is completed. Thereby, the joint part 4 becomes waterproof and can prevent intrusion of rainwater or the like.

The distance between joints changes due to temperature changes, earthquakes, etc., and when the dimensions increase, the cushioning material swells to ensure a close contact, and when the dimension decreases, the cushioning material shrinks to accommodate The fire resistant member is prevented from falling off from the joint.
As a result, fire resistance can be maintained over a long period of time. A fire broke out
When the joint portion 4 is heated, the combustible portion is melted and carbonized and burned out. However, since the heat-expandable refractory material layer 22 is thermally expanded to form a refractory heat insulating layer, flame and heat enter from the joint portion 4. Can be prevented.

(Adjustment of thermally expandable refractory material A)
42 parts by weight of butyl rubber (“Butyl # 065” manufactured by Exxon), 50 parts by weight of polybutene (“Polybutene # 100R” manufactured by Idemitsu Petrochemical Co., Ltd.), 8 parts by weight of hydrogenated petroleum resin (“Escollets # 5320” manufactured by Tonex) 100 parts by weight of ammonium polyphosphate (“EXOLIT AP422” manufactured by Clariant), 30 parts by weight of neutralized thermally expandable graphite (“Frame Cut GREP-EG” manufactured by Tosoh Corporation), aluminum hydroxide (manufactured by Showa Denko “ Hydilite H-31 ") 50 parts by weight and 100 parts by weight of calcium carbonate (" BF300 "manufactured by Bihoku Powder Co., Ltd.) were kneaded using a kneading roll, and the resulting resin composition was 1 mm thick by press molding. A sheet-like thermally expandable refractory material A was produced.

(Adjustment of heat-expandable refractory material B)
40 parts by weight of an epoxy resin (“E807” manufactured by Yuka Shell Chemical Co., Ltd.), 60 parts by weight of a diamine-based curing agent (“EKFL052” manufactured by Yuka Shell Chemical Co., Ltd.), neutralized heat-expandable graphite (“manufactured by Tosoh Corporation” "Frame cut GREP-EG") 100 parts by weight, calcium carbonate ("Baiton BF300" manufactured by Bihoku Flourishing Co., Ltd.) 100 parts by weight, and
Ammonium polyphosphate (Clariant “EXOLIT AP422”) 1
After the resin composition consisting of 00 parts by weight is agitated with a planetary stirrer, it is coated with a roll coater and heat-cured to obtain a heat-expandable refractory material B formed into a 0.7 mm thick sheet. It was.

(Adjustment of thermally expandable refractory material C)
In addition to the heat-expandable refractory material B, glass cloth fiber (C11A1-68V5, manufactured by Unitika Glass Fiber Co., Ltd.) (mass 16 g / m @ 2) is impregnated and cured.
A thermally expandable refractory material molded into a 5 mm thick sheet was obtained.

(Thermal expansion refractory material D)
“Meiji Hi-Cut” (sheet material made of a resin composition containing polyurethane resin and thermally expandable graphite) manufactured by Mitsui Kinzoku Co., Ltd. was used.

(Thermal expansion refractory material E)
A “fire barrier” manufactured by 3M (a sheet material made of a resin composition containing chloroprene rubber and vermiculite) was used.

(Measurement of volume expansion coefficient)
100 mm × 100 mm of the sheets of the heat-expandable refractory materials A, B, C, D and E
A sample cut to the size of ATLAS corn calorimeter “CON”
Using E2 ", a heat amount of 50 kW / m @ 2 was irradiated for 30 minutes to burn and expand to form a refractory heat insulating layer. The expansion ratio in the thickness direction was calculated from the thickness of the obtained fireproof heat insulating layer by the following formula, and is shown in FIG. Expansion ratio in the thickness direction (times) = t / t0, where t
Indicates the thickness after expansion, and t0 indicates the thickness before expansion. The expansion ratio in the thickness direction is regarded as the volume expansion coefficient. When the expansion ratio in the thickness direction exceeds 20 times, an iron or aluminum foil box having an inner dimension of 100 mm × 100 mm × height 30 mm is prepared,
A sample was placed under the box and measured.
Examples 1 to 10 will be described below.

(Example 1)
Thermally expandable refractory material A (thickness 1 mm), polyethylene foam (manufactured by Sekisui Chemical Co., Ltd.)
, Softlon (thickness 6mm), aluminum glass cloth (Iwao company, thickness 0.16m)
m), the laminate was laminated, and the polyethylene foam was provided as a buffer material layer 13 on one surface of the thermally expandable refractory material layer 12, and the base layer 11 of aluminum glass cloth was provided on the other surface. The obtained laminate was cut into a width of 40 mm to produce a long refractory member 10. In FIG. 1, 13 indicates a polyethylene foam (buffer material layer), 12 indicates a thermally expandable refractory material layer, and 11 indicates an aluminum glass cloth (base material layer).

(Example 2)
Thermally expandable refractory material A (thickness 1 mm), polyethylene foam (manufactured by Sekisui Chemical Co., Ltd.)
, Softlon (thickness 6 mm), laminated with polyethylene film (thickness 0.16 mm) sandwiched between the heat-expandable refractory material layer 12 and buffer material layer 1
3 is a polyethylene foam, and the other layer is a polyethylene film substrate layer 11.
It was set as the structure provided with. The obtained laminate was cut into a width of 80 mm to produce a long refractory member 10.

(Example 3)
Extruded cylindrical polyethylene foam as a buffer material with a diameter of 20 mm,
A fire-resistant member 20 having a diameter of about 22 mm and having a three-layer structure shown in FIG. 5b is formed by laminating an aluminum glass cloth (manufactured by Iwao Co., Ltd.) having a thickness of 0.16 mm around the obtained foam.
A was produced. In FIG. 5b, 21 indicates a polyethylene foam (buffer material), 22A indicates a thermally expandable refractory material layer, and 23A indicates an aluminum glass cloth (base material layer).

Example 4
In the same manner as in Example 1, a fire-resistant member 10 having a configuration in which a polyethylene foam as a buffer material layer 13 is provided on one surface of a thermally expandable fire-resistant material layer 12 and an aluminum glass cloth base material layer 11 is provided on the other surface. As shown in FIG. 2, an adhesive layer 14 having a width of about 6 mm of a butyl rubber tape was formed along both sides in the longitudinal direction.

(Example 5)
Thermally expandable refractory material layer 1 using the aforementioned thermally expandable refractory material layer B (thickness 0.7 mm)
A fireproof member 10 was prepared by laminating a polyethylene foam (thickness 6 mm) as the buffer material layer 13 on one surface 2 and an aluminum foil (thickness 0.07 mm) as the base material layer 11 on the other surface.

(Example 6)
Extruded cylindrical polyethylene foam as buffer material (diameter 20mm)
Then, after the heat-expandable refractory material C was extrusion coated and laminated at a thickness of 0.5 mm around the obtained foam, a polyethylene film having a thickness of 0.07 mm was further laminated on the surface, and FIG. A refractory member 20 having a diameter of about 22 mm having the three-layer structure shown in FIG. In FIG. 5a, 21 indicates a polyethylene foam (buffer material), 22 indicates a thermally expandable refractory material layer, and 23 indicates a polyethylene film (base material layer).

(Example 7)
A polyethylene foam (thickness 6 mm) is laminated as a buffer material layer 13 on one surface of the heat-expandable refractory material layer 12 using the heat-expandable refractory material layer D (thickness 2 mm),
An iron plate (thickness: 0.2 mm) was laminated as the base material layer 11 on the other surface to produce a fireproof member 10.

(Example 8)
Thermally expandable refractory material layer 1 using the aforementioned thermally expandable refractory material layer E (thickness 2.5 mm)
A fireproof member 10 was prepared by laminating a polyethylene foam (thickness 6 mm) as the buffer material layer 13 on one surface 2 and a ceramic sheet (thickness 0.5 mm) as the base material layer 11 on the other surface.

Example 9
Thermally expandable refractory material layer 1 using the above thermally expandable refractory material layer A (thickness 0.7 mm)
A ceramic blanket (thickness: 6 mm) was laminated as one of the buffer material layers 13 on one surface of the sheet 2 and an aluminum glass cloth (thickness: 0.16 mm) was laminated as the base material layer 11 on the other surface to produce the fireproof member 10.

(Example 10)
A polyethylene foam (thickness 6 mm) is laminated as a buffer material layer 13 on one surface of the heat-expandable refractory material layer 12 using the heat-expandable refractory material layer A (thickness 1 mm),
An aluminum glass cloth (thickness: 0.16 mm) was laminated as the base material layer 11 on the other surface to produce a refractory member 10, and two were inserted into the joint portion 4.

(Comparative Example 1)
A polyethylene foam (thickness 6 mm) is laminated as a buffer material layer on one surface of the heat-expandable refractory material layer D using the heat-expandable refractory material layer D (thickness 2 mm), and there is no base material layer on the other surface. A refractory member was prepared.

(Comparative Example 2)
Without using a thermally expandable refractory material layer, a ceramic blanket (thickness 6 mm) and an aluminum glass cloth (thickness 0.16 mm) as a base material layer were laminated to produce a refractory member.

As shown in FIGS. 3, 4, and 6, two ALC plates 3 (“Clion Panel” manufactured by Clion Corporation, size: length 1200 mm × width 600 mm × thickness 75 mm) are connected to a square steel pipe 2 (size: 150 mm square, Through the L angle 5 welded to a thickness of 6 mm)
The joint plate 4 having a width of 20 mm was fixed by using the Inazuma plate 6. After the base material layer 11 of the refractory member 10 is folded in two so as to be in contact with the side surface of the ALC plate 3 to close the joint portion 4, the caulking agent 8 ( Sealed with an acrylic caulking agent (manufactured by Konishi Co., Ltd.) to obtain a fireproof test specimen.

(Fire resistance test)
For the fire resistance test bodies of Examples 1 to 10 and Comparative Examples 1 and 2, ISO 83
4, the back surface temperature when heated for 1 hour (measured at the measurement position 9 below the joint 4 in the figure, measured from above) is measured and shown in FIG. Test results were obtained. In FIG. 7, the increase in the back surface temperature is indicated by ○ when the maximum temperature is 180 ° C. or less and the average is 140 ° C. or less from the test start temperature, and the above is indicated by ×.

In FIG. 7, in Examples 1 to 10, the buffer material portion was melted or carbonized in the fire resistance test, but the thermally expandable refractory material layers 12 and 22 were expanded and the joint portion 4 was filled. Met. On the other hand, in Comparative Example 1, the refractory member dropped and the flame penetrated after 48 minutes, and in Comparative Example 2, the caulking agent melted or carbonized after 20 minutes, the refractory member dropped and the flame penetrated, and the back surface The temperature greatly exceeded 180 ° C.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention described in the claims. Design changes can be made. For example, the cushioning material at the center of the refractory member 20 is a cylindrical material, but may be formed of an elliptical columnar shape or a polygonal columnar cross section.

1 shows an embodiment of a refractory member according to the present invention, wherein (a) is a cross-sectional view, (b) is a cross-sectional view in a folded state, (c) is a cross-sectional view in a three-folded state, and (d) is 4 Sectional drawing of the folded state, (e) is a sectional view of the rolled state. The other embodiment of the fireproof member which concerns on this invention is shown, (a) is sectional drawing, (b) is sectional drawing of the state folded in half. Sectional drawing of the state which attached and constructed the fireproof member of FIGS. Sectional drawing of the state which reversed and attached the fireproof member of FIGS. (A), (b) is sectional drawing which shows other embodiment of the fireproof member which concerns on this invention, respectively. Sectional drawing of the state which attached and constructed the fireproof member of FIG. 5 to the outer wall panel. The table | surface which shows the result of having done the fire resistance test of Examples 1-10 and Comparative Examples 1 and 2. FIG.

Explanation of symbols

3 ... ALC plate (outer wall material), 4 ... joint part,
10, 20, 20A ... fire resistant member,
11, 23, 23A ... base material layer,
12, 22, 22A ... a thermally expandable refractory material layer,
13 ... Buffer material layer, 14 ... Adhesive layer 21 ... Buffer material

Claims (4)

A substrate layer formed by laminating at least one selected from glass cloth, glass mat, and carbon fiber, and an aluminum foil, and a thermally expandable refractory material layer and a buffer material layer laminated on the substrate layer, The thermally expandable refractory material layer is a construction method for inserting a refractory member formed of a material that can be expanded by heating to form a refractory heat insulating layer into a joint portion of an outer wall material,
Bending the refractory member into two or more so that the opposing surfaces are in contact with each other and inserting the refractory member into the joint portion;
Injecting a caulking agent from the outside of the outer wall material using the refractory member as a backup material;
The construction method of the fireproof member characterized by having. A buffer material, a thermally expandable material layer that is laminated on the outer periphery of the buffer material and expands by heating to form a fireproof heat insulating layer, and a base material layer further laminated on the outer periphery of the thermally expandable material layer The base material layer is a construction method for inserting a fireproof member formed by laminating at least one selected from glass cloth, glass mat and carbon fiber and an aluminum foil into the joint portion of the outer wall material,
Bending the refractory member into two or more so that the opposing surfaces are in contact with each other and inserting the refractory member into the joint portion;
Injecting a caulking agent from the outside of the outer wall material using the refractory member as a backup material;
The construction method of the fireproof member characterized by having.   The fire resistance according to claim 1 or 2, wherein the base material layer is formed by laminating an adhesive layer on a surface opposite to the surface on which the thermally expandable refractory material layer is laminated or on a part of the opposite surface. Construction method of members.   The construction method for a refractory member according to any one of claims 1 to 3, wherein the thermally expandable refractory material layer contains an inorganic fiber material therein.

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