JP6777427B2 - Fire protection material and fire protection structure of compartment penetration - Google Patents

Description

The present invention relates to a fireproof material inserted into a compartment penetrating portion formed in a compartment such as a wall, floor, or ceiling of a building, and a fireproof structure of the compartment penetrating portion provided with the fireproof material.

As a fireproof structure of the compartment penetrating part, a construction method is known in which a fireproof material having fire resistance is installed in the compartment penetrating part, electrical wiring and piping are penetrated inside the fireproof material, and the compartment penetrating part is fireproofed. (See, for example, Patent Document 1). In Patent Document 1, a metal sleeve is installed in a section penetrating portion as a fireproof material, and pipes such as wiring and pipes are inserted into the sleeve. Here, when a compartment penetrating portion is formed in the compartment, it is necessary to blindfold the compartment penetrating portion so that the compartment penetrating portion cannot normally see the other side from one side of the compartment. Therefore, in Patent Document 1, the periphery of the pipes in the sleeve is filled with a refractory putty such as mortar to close the section penetrating portion.

JP-A-2014-137085

However, as in Patent Document 1, the work of filling the compartment penetrating portion with the refractory putty is complicated, and particularly when the compartment penetrating portion is formed in the corner of the room or near the ceiling, it becomes more complicated for the operator. It requires a great burden. In addition, when filling the compartment penetration part formed on the floor or ceiling with a refractory putty, the fireproof putty may hang down due to its own weight, so it is necessary to install an instrument to receive the fireproof putty in the compartment penetration part, which is troublesome for construction. It also costs.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a fireproof material capable of easily realizing fireproof treatment and blindfolding of a compartment penetration portion and a fireproof structure of the compartment penetration portion provided with the fireproof material. Is to provide.

An object of the present invention is a fireproof material formed in a compartment of a building and installed in a compartment penetration portion through which at least one pipe is inserted, and includes a fireproof and elastic cushion layer. The fire protection material is achieved by a fire protection material having a pair of mutually expandable sections that are provided with a notch extending inward from the peripheral edge portion and a tube body is sandwiched between the notches.

It is preferable that the fireproof material having the above structure further includes a shape holder that imparts shape retention to the cushion layer.

Further, it is more preferable that the fireproof material having the above structure has an aluminum glass cloth attached to the surface of the cushion layer.

Further, in the fireproof material having the above structure, it is more preferable that the shape holder is made of a linear material or a plate material and is curved so as to sandwich the notch.

Further, the object of the present invention includes a compartment having a compartment penetrating portion, at least one pipe body inserted through the compartment penetrating portion, and a fireproof material having the above configuration, and the pipe body is said to have the same structure. It is also achieved by the fire protection structure of the compartment penetrating portion that is pushed into the inside of the fire protection material from the notch of the fire protection material and sandwiched between the pair of sections.

Further, the above object of the present invention includes a compartment having a compartment penetrating portion, at least one pipe body inserted through the compartment penetrating portion, and a fireproof material having fire resistance and elasticity, and the fireproof material. Is also achieved by the fireproof structure of the compartment penetrating portion wound around the tubular body while compressing and deforming between the section penetrating portion and the tubular body.

According to the fireproof structure of the present invention, the fireproof treatment can be realized by a simple operation of surrounding the tube body with a fireproof material. Therefore, the complicated work of filling the refractory putty material is not required. Further, since the cushion layer has elasticity and is compressed and deformed according to the shape of the outer peripheral surface of the pipe body to be in close contact with the pipe body, the section penetrating portion can be blindfolded. Therefore, it is possible to hide the other side from one side of the compartment by the compartment penetration portion. Further, according to the fireproof material of the present invention, the circumference of the pipe body can be surrounded by a simple operation of expanding a pair of sections and pushing the pipe body between them.

It is a perspective view of the fire prevention structure which concerns on one Embodiment of this invention. It is a top view of the fire prevention structure which concerns on one Embodiment of this invention. It is sectional drawing of the fire prevention structure which concerns on one Embodiment of this invention. It is a top view of the fire prevention material which concerns on one Embodiment of this invention. It is a front view of FIG. It is a perspective view explaining the method of installing the fire protection material in the section penetration part of a section body. It is a top view of the fire prevention material of a modification. It is a top view of the fire protection structure of a modification. It is a perspective view of the fire prevention structure which concerns on other embodiment of this invention. It is sectional drawing of the fire prevention structure which concerns on other embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The fireproof material of the present invention is installed in a section penetrating portion formed in a section such as a wall, floor, or ceiling of a building, and the inner peripheral surface of the section penetrating portion and a pipe inserted through the section penetrating portion. This is to prevent fire and heat from leaking in the event of a fire from a gap with piping (tube body) such as a cable.

1 to 3 show a fire prevention structure (hereinafter, simply referred to as “fire prevention structure”) 10 in a compartment penetration portion 12 of a building compartment 11 using the fire prevention material 1 according to the embodiment of the present invention. There is. The compartment 11 plays a role of partitioning adjacent fire protection compartments A and B such as a room. In the present embodiment, the fire-prevention structure 10 in which the fire-prevention material 1 is installed on the floor or ceiling that horizontally partitions the adjacent fire-prevention compartments A and B is described as the compartment 11, but the scope of the present invention is the scope of the present invention. It is needless to say that the present invention is not limited to this embodiment, and a fire prevention structure in which the fire prevention material 1 is installed on a wall that vertically partitions adjacent fire prevention sections is also included in the scope of the present invention.

The floor / ceiling structure and wall structure of the compartment 11 are not particularly limited. For example, in addition to a solid structure having a predetermined thickness such as a reinforced concrete structure (RC) or a lightweight cellular concrete structure (ALC), if it is a ceiling / floor, the floor material constituting the upper floor and the lower floor Examples thereof include a hollow structure in which the ceiling materials constituting the ceiling are arranged at intervals, and in the case of a wall, a pair of wall materials are fixed so as to sandwich a wooden or steel inter-column.

A compartment penetrating portion 12 is formed in the compartment 11, and adjacent fireproof compartments A and B are communicated with each other by the compartment penetrating portion 12. When the ceiling / floor or wall has a solid structure, the partition penetrating portion 12 is formed by a through hole formed for inserting the pipe body 13, and when the ceiling / floor or wall has a hollow structure, the floor The partition penetration portion 12 is formed by two through holes formed for inserting a pipe body into a material, a ceiling material, or a pair of wall materials, and a hollow space between the through holes. The shape of the compartment penetrating portion 12 may be various shapes such as a circular shape in a plan view and a rectangular shape in a plan view.

Examples of the pipe body 13 inserted into the compartment penetration portion 12 include various pipes such as a refrigerant pipe, a heat medium pipe, a water pipe, a sewage pipe, a water injection / drainage pipe, a gas pipe, a heating / cooling medium transfer pipe, and a ventilation pipe. In addition, cables such as electric wire cables and optical fiber cables can be mentioned.

As shown in FIGS. 4 and 5, the fireproof material 1 has a flat plate shape having a predetermined thickness, and in the present embodiment, has a rectangular shape in a plan view. The fireproof material 1 includes at least a cushion layer 2 having fire resistance and elasticity.

The material of the cushion layer 2 is not particularly limited as long as it has fire resistance (heat resistance and flame retardancy) and can be elastically deformed to form a compressible layer. The cushion layer 2 includes, for example, a felt made of glass wool, rock wool, ceramic wool or the like; a flame-resistant fiber non-woven fabric; an inorganic fiber material such as glass fiber or ceramic fiber; a sponge or foam made of a thermosetting resin or a rubber material, or thermal expansion. Sponges and foams containing fire-resistant materials; fire-resistant putty materials and coking materials made by blending fillers and flame-retardant agents with rubber such as building sealants, joint treatment materials for gypsum board, rubber such as mortar or chloroprene rubber, and silicones. Can be preferably used in the form of a plate. Examples of the thermosetting resin include a thermosetting resin (polyurethane, phenol resin, etc.) used for the thermal expansion layer 3 described later. Examples of the rubber substance include those having fire resistance such as chloroprene rubber and urethane rubber among the rubber substances used for the thermal expansion layer 3 described later. Examples of the heat-expandable refractory material include those used for the heat-expandable layer 3 described later. The cushion layer 2 may be composed of one of these materials alone, or a combination of two or more of these materials.

The thickness of the cushion layer 2 is not particularly limited, but is preferably 10 mm or more and 100 mm or less. The size of the cushion layer 2 is larger than that of the compartment penetrating portion 12 of the compartment 11, and is large enough to cover the compartment penetrating portion 12.

The fireproof material 1 may be composed of only the cushion layer 2 described above, but further, an aluminum glass cloth 5 attached to the surface of the thermal expansion layer 4 and / or the cushion layer 2 having thermal expansion and fire resistance. A two-layer structure in which an aluminum glass cloth 5 or a thermal expansion layer 4 is laminated on a cushion layer 2, or an aluminum glass cloth 5, a cushion layer 2 and a thermal expansion layer 4 in this order. It may be composed of a laminated body having a three-layer structure.

The thermal expansion layer 4 can be composed of, for example, a thermal expansion refractory material in which a resin component contains a thermal expansion layered inorganic substance and an inorganic filler.

Examples of the above resin components include thermoplastic resins, thermosetting resins, rubber substances, and combinations thereof. Examples of the thermoplastic resin include polyolefin resins such as polypropylene resins, polyethylene resins, poly (1-) butene resins, and polypentene resins, polystyrene resins, acrylonitrile-butadiene-styrene (ABS) resins, and polycarbonates. Examples thereof include synthetic resins such as based resins, polyphenylene ether-based resins, (meth) acrylic resins, polyamide-based resins, polyvinyl chloride-based resins, phenol-based resins, polyurethane-based resins, and polyisobutylene.

Examples of the thermosetting resin include polyurethane, polyisocyanate, polyisocyanurate, phenol resin, epoxy resin, urea resin, melamine resin, unsaturated polyester resin, and polyimide.

The rubber substances include natural rubber, isoprene rubber, butadiene rubber, 1,2-polybutadiene rubber, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, chlorinated butyl rubber, ethylene-propylene rubber, chlorosulfonated polyethylene rubber, and acrylic. Examples thereof include rubber, epichlorohydrin rubber, polyvulture rubber, non-vulture rubber, silicon rubber, fluororubber, urethane rubber and the like.

As these synthetic resins and / or rubber substances, one kind or two or more kinds can be used. Among these synthetic resins and / or rubber substances, those having flexible and rubber-like properties are preferable. Those having such properties can be highly filled with an inorganic filler, and the obtained resin composition becomes flexible and easy to handle. In order to obtain a more flexible and easy-to-handle resin composition, a non-vulcanized rubber such as butyl or a polyethylene-based resin is preferably used. Instead, an epoxy resin is preferable from the viewpoint of increasing the flame retardancy of the resin itself and improving the fireproof performance.

Next, the thermally expandable layered inorganic substance expands when heated, but the thermally expandable layered inorganic substance is not particularly limited, and examples thereof include vermiculite, kaolin, mica, and thermally expandable graphite. Thermally expandable graphite is a conventionally known substance, in which powders such as natural scaly graphite, thermally decomposed graphite, and kiss graphite are mixed with inorganic acids such as concentrated nitric acid, nitric acid, and selenic acid, and concentrated nitric acid, perchloric acid, and excess. A graphite interlayer compound was produced by treatment with a strong oxidizing agent such as chlorate, permanganate, dichromate, dichromate, hydrogen peroxide, etc., and the layered structure of carbon was maintained. It is a kind of raw crystalline compound.

The heat-expandable graphite obtained by acid treatment as described above may be further neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound or the like. The particle size of the heat-expandable graphite is preferably 20 to 200 mesh. Examples of commercially available products of heat-expandable graphite include "GREP-EG" manufactured by Tosoh Corporation and "GRAFGUARD" manufactured by GRAFTECH.

Next, when the expanded heat insulating layer is formed, the inorganic filler increases the heat capacity and suppresses heat transfer, and also acts as an aggregate to improve the strength of the expanded heat insulating layer. The inorganic filler is not particularly limited, and for example, metal oxides such as alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, and ferrites; calcium hydroxide, magnesium hydroxide. , Hydroinorganic substances such as aluminum hydroxide and hydrotalcite; metal carbonates such as basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate and barium carbonate can be mentioned.

In addition to these, as inorganic fillers, calcium salts such as calcium sulfate, gypsum fiber, calcium silicate; silica, diatomaceous earth, dosonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, active white 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 " MOS ”(trade name), lead zirconate titanate, zinc stearate, calcium stearate, aluminum borate, molybdenum sulfide, silicon carbide, stainless fiber, zinc borate, various magnetic powders, slag fibers, fly ash, dehydrated sludge, etc. Can be mentioned. These inorganic fillers may be used alone or in combination of two or more.

The particle size of the inorganic filler is preferably 0.5 to 100 μm, more preferably 1 to 50 μm. When the amount of the inorganic filler added is small, the dispersibility greatly affects the performance. Therefore, those having a small particle size are preferable, and those having a particle size of 0.5 μm or more have good dispersibility. On the other hand, when the amount of the inorganic filler added is large, the viscosity of the resin composition increases and the moldability decreases as the high filling progresses, but the viscosity of the resin composition decreases by increasing the particle size. However, a particle size of 100 μm or less is preferable in terms of the surface properties of the molded product and the mechanical properties of the resin composition. Examples of commercially available inorganic fillers include "Heidilite H-31" (manufactured by Showa Denko) with a particle size of 18 μm, "B325" (manufactured by ALCOA) with a particle size of 25 μm, and calcium carbonate. , "Whiten SB Red" (manufactured by Bikita Powder Industry Co., Ltd.) with a particle size of 1.8 μm, "BF300" (manufactured by Bikita Powder Industry Co., Ltd.) with a particle size of 8 μm, and the like.

Further, the resin composition constituting the heat-expandable refractory material may further contain a phosphorus compound in addition to the above-mentioned components in order to increase the strength of the expansion heat insulating layer and improve the fire protection performance. The phosphorus compound is not particularly limited, and for example, various phosphate esters such as red phosphorus; triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresil diphenyl phosphate, xylenyl diphenyl phosphate; sodium phosphate, Metal phosphates such as potassium phosphate and magnesium phosphate; ammonium polyphosphates; compounds represented by the following chemical formula (1) can be mentioned. Of these, red phosphorus, ammonium polyphosphate, and the compound represented by the following chemical formula (1) are preferable from the viewpoint of fire prevention performance, and ammonium polyphosphate is more preferable from the viewpoint of performance, safety, cost, and the like. ..

In the chemical formula (1), R1 and R3 represent hydrogen, a linear or branched alkyl group having 1 to 16 carbon atoms, or an aryl group having 6 to 16 carbon atoms. R2 is a hydroxyl group, a linear or branched alkyl group having 1 to 16 carbon atoms, a linear or branched alkoxyl group having 1 to 16 carbon atoms, an aryl group having 6 to 16 carbon atoms, or a carbon number of carbon atoms. Represents 6 to 16 aryloxy groups.

As the red phosphorus, commercially available red phosphorus can be used, but from the viewpoint of moisture resistance and safety such as not spontaneously igniting during kneading, those in which the surface of the red phosphorus particles is coated with a resin are preferably used. The ammonium polyphosphates are not particularly limited, and examples thereof include ammonium polyphosphate and melamine-modified ammonium polyphosphate. Ammonium polyphosphate is preferably used from the viewpoint of handleability and the like. Examples of commercially available products include "AP422" and "AP462" manufactured by Clariant AG, "FR CROS 484" and "FR CROS 487" manufactured by Budenheim Ibica.

The compound represented by the chemical formula (1) is not particularly limited, and for example, methylphosphonate, dimethyl methylphosphonate, diethylmethylphosphonate, ethylphosphonate, propylphosphonate, butylphosphonic acid, 2-methylpropylphosphonate, t- Butylphosphonic acid, 2,3-dimethyl-butylphosphonate, octylphosphonic acid, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphonic acid, methylethylphosphonate, methylpropylphosphinic acid, diethylphosphonic acid, dioctylphosphonic acid, phenylphosphinate Examples thereof include acids, diethylphenylphosphonates, diphenylphosphonates, and bis (4-methoxyphenyl) phosphonates. Among them, t-butylphosphonic acid is preferable in terms of high flame retardancy, although it is expensive. The phosphorus compounds may be used alone or in combination of two or more.

The resin composition contains 10 to 350 parts by weight of a heat-expandable layered inorganic substance and 30 to 400 parts by weight of the inorganic filler with respect to 100 parts by weight of a resin component such as the above-mentioned thermoplastic resin or epoxy resin. Is preferable.

The total amount of the heat-expandable layered inorganic substance and the inorganic filler is preferably in the range of 50 to 600 parts by weight with respect to 100 parts by weight of the resin component.

Such a resin composition expands by heating to form a refractory heat insulating layer. According to this composition, the heat-expandable refractory material expands by heating such as a fire to obtain a required coefficient of thermal expansion, and after expansion, a residue having a predetermined heat insulating performance and a predetermined strength is formed. It is also possible to achieve stable fire protection performance.

When the total amount of the heat-expandable layered inorganic substance and the inorganic filler in the resin composition is 50 parts by weight or more, sufficient fire resistance is obtained by satisfying the residual amount after combustion, and when it is 600 parts by weight or less, the mechanical properties Is maintained.

Further, the resin composition contains, if necessary, phenolic, amine, sulfur and other antioxidants, as well as metal damage inhibitors, antistatic agents, stabilizers, cross-linking agents, lubricants, softeners, pigments and adhesives. Additives such as imparting resin and molding aid, and antistatic agents such as polybutene and petroleum resin can be included.

The resin composition is obtained by kneading each component of the above resin composition using a known device such as a single-screw extruder, a twin-screw extruder, a Banbury mixer, a kneader mixer, a kneading roll, a Raikai machine, and a planetary stirrer. Can be obtained.

The heat-expandable refractory material can also be obtained as a commercial product. For example, a fire barrier manufactured by Sumitomo 3M Co., Ltd. (a heat-expandable refractory material composed of a resin composition containing chloroprene rubber and vermiculite, expansion coefficient: 3) Double, thermal conductivity: 0.20 kcal / m · h · ° C), Mitsui Kinzoku Co., Ltd.'s Medihicut (coefficient of thermal expansion made of resin composition containing polyurethane resin and heat-expandable graphite, expansion coefficient: 4 times , Thermal conductivity: 0.21 kcal / m · h · ° C), thermal expansion refractory materials such as Fiblock manufactured by Sekisui Chemical Industry Co., Ltd. can also be mentioned.

The heat-expandable refractory material is not particularly limited as long as it is insulated by the expansion layer when exposed to a high temperature such as in a fire and has the strength of the expansion layer, but the heating condition of 50 kW / m ² It is preferable that the volume expansion coefficient after heating for 30 minutes is 3 to 50 times. When the volume expansion coefficient is 3 times or more, the expansion volume can sufficiently fill the burned portion of the resin component, and when the expansion volume is 50 times or less, the strength of the expansion layer is maintained and the penetration of flame is prevented. The effect is maintained.

The fireproof material 1 composed of a laminated body of the cushion layer 2, the thermal expansion layer 4, and the aluminum glass cloth 5 is provided with a notch 6 extending inward from the peripheral edge portion. In the present embodiment, the notch 6 extends from the central position of one edge portion to the vicinity of the opposite edge portion among the four edge portions constituting the peripheral edge portion of the fireproof material 1. Due to this notch 6, the fireproof material 1 has a pair of sections 7 that can be expanded from each other, and as shown in FIG. 6, by separating the pair of sections 7 from each other, the inside of the fireproof material 1 is separated from the notch 6. The tube body 13 can be pushed into the body. Then, by sandwiching the tube body 13 pushed into the fireproof material 1 between the pair of sections 7, the pair of sections 7 are brought into close contact with the outer peripheral surface of the tube body 13 while being compressed and deformed, so that the tube body 13 is surrounded. The fireproof material 1 can be arranged. In the present embodiment, the notch 6 extends from one edge portion of the peripheral edge portion of the fireproof material 1, but may extend from the corner portion of the peripheral edge portion to the vicinity of the opposite corner portion.

Further, the fireproof material 1 may further include a shape holder 3 that imparts shape retention to the cushion layer 2. The shape holder 3 is made of, for example, a linear material or a plate material made of resin, rubber, or metal (including alloy). In the present embodiment, the shape holder 3 is a ring-shaped (C-shaped) curved plate material that can be expanded, and is built in the cushion layer 2. The shape holder 3 is provided in the cushion layer 2 so that the notch 6 is located between both ends separated from each other, and a part of the notch 6 is sandwiched between them. Both ends of the shape holder 3 are separated and expanded as the pair of sections 7 are expanded, but after that, both ends are brought closer due to the shape retention (restoring force), and the shape holder 3 is originally Restore to a ring shape (C shape). Therefore, in the fireproof material 1, after the pair of sections 7 are expanded and the pipe body 13 is pushed into the inside through the notch 6, the pair of sections 7 are automatically set based on the shape retention (restoring force) of the shape holder 3. By being close to each other, the fireproof material 1 (cushion layer 2) is held in its original shape (rectangular shape), whereby the fireproof material 1 is maintained in a state of surrounding the pipe body 13.

In the present embodiment, the shape holder 3 has a ring shape (C shape) that can be expanded, but may be a plate material curved in a U shape as shown in FIG. 7. In this case, the shape holder 3 is provided on the cushion layer 2 so as to sandwich the entire portion of the notch 6. When the shape holder 3 is made of a linear material, it may be attached to the upper and lower surfaces of the cushion layer 2 in addition to being built in the cushion layer 2. The size of the shape holder 3 is not particularly limited, and can be appropriately set to a size capable of exhibiting its shape retention.

Next, a method of installing the above-mentioned fireproof material 1 on the compartment penetrating portion 12 of the compartment 11 will be described.

First, the pipe body 13 is passed through the section penetrating portion 12 of the section body 11. Next, as shown in FIG. 6, the pair of sections 7 of the fireproof material 1 are separated from each other, and the pipe body 13 is pushed into the fireproof material 1 from the side of the fireproof compartment A through the notch 6, for example. Then, the fireproof material 1 is arranged so as to surround the pipe body 13 by sandwiching the pipe body 13 pushed into the inside of the fireproof material 1 by a pair of sections 7 and bringing the pipe body 13 into close contact with the outer peripheral surface of the pipe body 13. Then, by fixing the fireproof material 1 to the outer surface of the compartment 11 using an adhesive, an adhesive, an adhesive tape, or the like, the fireproof material 1 is fixed to the compartment 11 and installed in the compartment penetration portion 12. As a result, the fireproof structure 10 of the section penetrating portion 12 is constructed.

In the fire prevention structure 10 in which the above-mentioned fire prevention material 1 is used, even if a fire occurs in the fire prevention section A or the fire prevention section B, the fire prevention material 1 closes the section penetrating portion 12 of the section 11 and the outer peripheral surface of the pipe body 13. It is possible to prevent flames and heat from leaking from the compartment penetrating portion 12 to the adjacent fire protection compartment because it is in close contact with the compartment. Further, since the thermal expansion layer 4 expands due to the heat of the fire and fills the partition penetrating portion 12, even if the tubular body 13 is melted or burnt down in the event of a fire to create a space, the thermal expansion of the thermal expansion layer 4 causes the space to be created. The space created by melting or burning the tube 13 is filled. As a result, the compartment penetrating portion 12 of the compartment 11 can be completely closed, so that it is possible to prevent flames and heat from leaking from the compartment penetrating portion 12 to the adjacent fire prevention compartment.

As described above, according to the present embodiment, the fire prevention treatment can be realized by a simple operation of installing the fire prevention material 1 in the section penetration portion 12 of the section body 11. Therefore, the complicated work of filling the refractory putty material is not required.

Further, since the fireproof material 1 closes the partition penetrating portion 12 of the compartment 11 and is in close contact with the outer peripheral surface of the pipe body 13, the compartment penetrating portion 12 visually recognizes the other side from one side of the fireproof compartments A and B. Can be prevented.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, the shape of the fireproof material 1 in a plan view is rectangular, but the pipe body 13 can be surrounded by a polygonal shape such as a circular shape or a hexagonal shape, and the compartment penetrating portion 12 of the compartment 11 is formed. It may have various shapes as long as it can be closed.

Further, in the above embodiment, the fireproof material 1 is composed of a laminated body of the cushion layer 2, the thermal expansion layer 4, and the aluminum glass cloth 5, but the fireproof material 1 may include at least the cushion layer 2.

Further, in the above embodiment, the form holder 3 is composed of a C-shaped or U-shaped linear material or a plate material, but the fireproof material 1 is provided with shape-retaining property (restoring force) to provide a notch 6 As long as it functions to automatically close the pair of sections 7 of the fireproof material 1 expanded by the above, various forms can be adopted.

Further, one fireproof material 1 may be installed from one side and one from the other side with respect to the compartment penetrating portion 12 of the compartment 11.

Further, in the above embodiment, it has been stated that the work of burying the refractory putty material can be omitted, so that the work load can be reduced. However, the present invention does not deny the use of the refractory putty material, and fire protection is required. The gap or the like that may occur between the material 1 and the pipe body 13 may be filled with a refractory putty. For example, as shown in FIG. 8, when a plurality of pipe bodies 13 (two in the illustrated example) are surrounded by the fireproof material 1, a gap is generated between the fireproof material 1 and the pipe body 13, and this gap By burying the fireproof putty material 14 in the fireproof structure 10, the fireproof performance of the fireproof structure 10 can be improved.

Further, in the above embodiment, the pair of sections 7 of the fireproof material 1 are separated from each other, the pipe body 13 is pushed into the fireproof material 1 from the notch 6, and then the pipe body 13 is sandwiched between the pair of sections 7 to form the pipe body 13. The fireproof material 1 is arranged so as to surround the pipe body 13 by bringing it into close contact with the outer peripheral surface of the pipe body 13. However, as shown in FIGS. 9 and 10, the fireproof material 1 is simply wound around the pipe body 13 without providing a notch 6 in the fireproof material 1, and is compressed and deformed between the section penetrating portion 12 and the pipe body 13. By sandwiching the pipe body 13, the pipe body 13 may be arranged so as to surround the pipe body 13, whereby the fire prevention structure 10 of the compartment penetrating portion 12 may be constructed. Even with this, since the fireproof material 1 is in close contact with the outer peripheral surface of the pipe body 13, the compartment penetrating portion 12 of the compartment 11 can be completely closed, so that flames and heat leak from the compartment penetrating portion 12 to the adjacent fireproof compartment. In addition to being able to prevent this, the compartment penetrating portion 12 can prevent the other side from being visually recognized from one side of the fire prevention compartments A and B. Further, the fireproof material 1 can be fixed to the compartment 11 without using fixing means such as an adhesive, an adhesive, and an adhesive tape.

In the embodiment of FIGS. 9 and 10, the fireproof material 1 may be composed of only the cushion layer 2 described above, or has a two-layer structure in which the thermal expansion layer 4 is laminated on the cushion layer 2. It may be composed of a laminated body. Further, the cushion layer 2 or the laminated body of the cushion layer 2 and the thermal expansion layer 4 may be composed of a laminated body in which the aluminum glass cloth 5 is laminated.

1 Fireproof material 2 Cushion layer 3 Shape holder 4 Thermal expansion layer 5 Aluminum glass cloth 6 Notch 7 Section 10 Fireproof structure 11 Section body 12 Section penetration part 13 Tube body 14 Fireproof putty material

Claims (5)

A fireproof material that is formed in a building compartment and is installed in a compartment penetration where at least one pipe is inserted.
A cushion layer that is fire resistant and elastic,
The thermal expansion layer laminated on one surface side of the cushion layer and
With
-Proof fire material, cuts extend therein provided from a peripheral portion, have a mutually expandable pair of sections tube is sandwiched between the said cuts,
A shape holder that imparts shape retention to the cushion layer is further provided.
Fireproof material. A fireproof material that is formed in a building compartment and is installed in a compartment penetration where at least one pipe is inserted.
A cushion layer that is fire resistant and elastic,
The thermal expansion layer laminated on one surface side of the cushion layer and
With
The fireproof material has a pair of mutually expandable sections that are provided with a notch extending inward from the peripheral edge and the tube is sandwiched between the notches.
Aluminum glass cloth is laminated on the surface of the cushion layer opposite to the surface on which the thermal expansion layer is laminated.
Fireproof material. A fireproof material that is formed in a building compartment and is installed in a compartment penetration where at least one pipe is inserted.
A cushion layer that is fire resistant and elastic,
The thermal expansion layer laminated on one surface side of the cushion layer and
A shape holder that imparts shape retention to the cushion layer, and
With
The fireproof material has a pair of mutually expandable sections that are provided with a notch extending inward from the peripheral edge and the tube is sandwiched between the notches.
The shape holder is made of a linear material or a plate material, and is curved so as to sandwich the notch.
Fireproof material. A compartment having a compartment penetration and a compartment
With at least one tube inserted through the compartment penetration
The fireproof material according to any one of claims 1 to 3 and
With
The pipe body is pushed into the inside of the fireproof material through the notch of the fireproof material, and is sandwiched between the pair of sections.
Fire protection structure for the section penetration. The thermal expansion layer of the fireproof material is arranged so as to be in contact with the compartment.
The fireproof structure of the compartment penetrating portion according to claim 4 .