JP2017207155A - Fire protection material and fire protection structure for partition penetration part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire protection material capable of readily providing fireproof treatment and blinding for a partition penetration part.SOLUTION: A fire protection material 1 installed in a partition penetration part 12 formed in a partition body 11 of an architectural structure includes: a cushion layer 2 having fireproof property and elasticity; a shape holding tool 3 for imparting shape holding property to the cushion layer 2; and a heat expansion layer 4 having heat expansion property. The fire protection material 1 is provided with a slit 6 extending inside from a peripheral part and has a pair of divided pieces 7 capable of mutually spreading and interposed with a pipe body 13 between them by the slit 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fireproof material inserted into a partition penetrating portion formed in a partition body such as a wall, floor, or ceiling of a building, and a fireproof structure of a partition penetrating portion including the fireproofing material.

  As a fire prevention structure of the partition penetration part, a construction method is known in which a fireproof material having fire resistance is installed in the partition penetration part, and electrical wiring and piping are passed through the inside of the fire prevention material to perform a fire resistance treatment of the partition penetration part. (For example, refer to Patent Document 1). In Patent Document 1, a metal sleeve is installed as a fireproof material in a partition penetrating portion, and piping such as wiring and piping is inserted into the sleeve. Here, when the partition penetration part is formed in the partition body, it is necessary to blind the partition penetration part so that the other side is not normally visible from one side of the partition body by the partition penetration part. Therefore, in patent document 1, the circumference | surroundings of piping in a sleeve are filled with fireproof putty, such as mortar, and the division | segmentation penetration part is obstruct | occluded.

JP 2014-137085 A

  However, as in Patent Document 1, the work of filling the partition penetration part with a fire-resistant putty is complicated, and particularly when the partition penetration part is formed in the corner of the room, near the ceiling, etc., it becomes even more complicated. A huge burden is required. In addition, when filling a section penetration part formed on the floor or ceiling with a fireproof putty, the fireproof putty may hang down due to its own weight. It also takes.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a fireproof material that can easily realize fireproofing and blindfolding of a partition through portion, and a fireproof structure of the partition through portion including the fireproof material. Is to provide.

  The above object of the present invention is a fireproof material that is formed in a partition of a building and is installed in a partition through-portion through which at least one pipe is inserted, and includes a cushion layer having fire resistance and elasticity. The fire-proof material is achieved by a fire-proof material having a pair of pieces that can be expanded from each other, with a notch extending inwardly from a peripheral edge portion, and a tube body sandwiched between the notches.

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

  Moreover, as for the fireproof material of the said structure, it is further more preferable that the aluminum glass cloth is affixed on the surface of the said cushion layer.

  Moreover, as for the fireproof material of the said structure, it is further more preferable that the said shape holder is comprised with the linear material or the board | plate material, and is curving so that the said notch may be pinched | interposed.

  The above object of the present invention includes a partition having a partition penetrating part, at least one tube inserted through the partition penetrating part, and a fireproofing material having the above-described configuration, It is also achieved by a fire prevention structure of a partition penetrating portion that is pushed into the fire prevention material from the cut of the fire prevention material and is sandwiched between the pair of pieces.

  In addition, the above object of the present invention includes a partition body having a partition through portion, at least one pipe inserted through the partition through portion, and a fireproof material having fire resistance and elasticity, and the fireproof material. Is also achieved by the fire prevention structure of the partition through portion that is wound around the tube while being compressed and deformed between the partition through portion and the tube.

  According to the fireproof structure of the present invention, the fireproofing process can be realized by a simple operation of surrounding the tube body with a fireproofing material. For this reason, the complicated operation | work which fills a fire-resistant putty material is not required. Moreover, since the cushion layer has elasticity and is compressed and deformed in conformity with the shape of the outer peripheral surface of the tubular body to be in close contact with the tubular body, the partition through portion can be hidden. Therefore, the other side can be prevented from being seen from one side of the division body by the division penetration part. Moreover, according to the fireproof material of this invention, the circumference | surroundings of a pipe body can be enclosed by the simple operation | work of expanding a pair of slice | interval and pushing a pipe body in between.

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. FIG. 5 is a front view of FIG. 4. It is a perspective view explaining the method of installing a fireproof material in the division penetration part of a division body. It is a top view of the fireproof material of a modification. It is a top view of the fire prevention 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.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The fireproof material of the present invention is installed in a partition penetration part formed in a partition body such as a wall, floor, or ceiling of a building, and an inner peripheral surface of the partition penetration part and a pipe inserted through the partition penetration part, This is to prevent fire and heat from leaking in the event of a fire through a gap with piping such as cables.

  1 to 3 show a fire prevention structure 10 (hereinafter simply referred to as “fire prevention structure”) 10 in a partition penetration portion 12 of a partition body 11 of a building using a fire prevention material 1 according to an embodiment of the present invention. Yes. The partition 11 plays a role of partitioning adjacent fire protection sections A and B such as a room. In addition, in this embodiment, although the fire prevention structure 10 which installed the fire prevention material 1 in the floor and ceiling which partition the adjacent fire prevention sections A and B horizontally as an example is demonstrated as the division body 11, the scope of the present invention is 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 the wall structure as the partition 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), the floor material constituting the upper floor and the floor of the lower floor may be ceiling / floor. A hollow structure such as a structure in which a ceiling material constituting the ceiling is arranged at an interval, or a structure in which a pair of wall materials are fixed so as to sandwich a wooden or steel stud is used for a wall.

  A partition through portion 12 is formed in the partition body 11, and the adjacent fire prevention sections A and B communicate with each other through the partition through portion 12. In addition, when the ceiling / floor or wall has a solid structure, the partition through portion 12 is configured by a through-hole formed to pass through the tubular body 13, and when the ceiling / floor or wall has a hollow structure, The partition through portion 12 is configured by two through holes formed to insert the pipe body through the material, the ceiling material, and the pair of wall materials, and a hollow space between the two through holes. The shape of the partition penetrating portion 12 may be various shapes such as a circular shape in plan view and a rectangular shape in plan view.

  Examples of the pipe body 13 inserted into the partition through portion 12 include various pipes such as a refrigerant pipe, a heat medium pipe, a water pipe, a sewage pipe, a pouring / draining 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 used.

  As shown in FIGS. 4 and 5, the fireproof material 1 has a flat plate shape having a predetermined thickness, and is rectangular in a plan view in the present embodiment. 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 the cushion layer 2 has fire resistance (heat resistance and flame retardancy) and can form a compressible layer by elastic deformation. As the cushion layer 2, for example, felt made of glass wool, rock wool, ceramic wool or the like; flame-resistant nonwoven fabric; inorganic fiber material such as glass fiber or ceramic fiber; sponge or foam made of thermosetting resin or rubber substance, or thermal expansion Sponges and foams that contain fire-resistant materials; Architectural sealing materials, joint materials for gypsum boards, rubbers such as mortar or chloroprene rubber, silicone, etc., and fire-resistant putty and caulking materials What formed this in plate shape can be used suitably. As a thermosetting resin, the thermosetting resin (a polyurethane, a phenol resin, etc.) used for the thermal expansion layer 3 mentioned later can be mentioned. Examples of the rubber substance include those having fire resistance such as chloroprene rubber and urethane rubber among rubber substances used for the thermal expansion layer 3 described later. As a thermally expansible refractory material, what is used for the thermal expansion layer 3 mentioned later can be mentioned. The cushion layer 2 may be composed of these materials alone or in combination of two or more.

  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 the partition penetrating portion 12 of the partition body 11, and is a size that can cover and hide the partition penetrating portion 12.

  Although the fireproof material 1 may be comprised only by the cushion layer 2 mentioned above, the aluminum glass cloth 5 affixed on the surface of the thermal expansion layer 4 and / or cushion layer 2 which have thermal expansion property and fire resistance further. Or a laminate having a two-layer structure in which the aluminum glass cloth 5 or the thermal expansion layer 4 is laminated on the cushion layer 2, or the aluminum glass cloth 5, the cushion layer 2 and the thermal expansion layer 4 in this order. You may be comprised with the laminated body of the laminated | stacked 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 resin component include thermoplastic resins, thermosetting resins, rubber substances, and combinations thereof. Examples of the thermoplastic resin include polypropylene resins, polyethylene resins, poly (1-) butene resins, polyolefin resins such as polypentene resins, polystyrene resins, acrylonitrile-butadiene-styrene (ABS) resins, and polycarbonates. And synthetic resins such as polyresin, polyphenylene ether resin, (meth) acrylic resin, polyamide resin, polyvinyl chloride resin, phenol resin, polyurethane resin, and polyisobutylene.

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

  Rubber materials 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, acrylic Examples thereof include rubber, epichlorohydrin rubber, polyvulcanized rubber, non-vulcanized rubber, silicon rubber, fluorine rubber, and urethane rubber.

  These synthetic resins and / or rubber substances can be used alone or in combination of two or more. Among these synthetic resins and / or rubber substances, those having flexible and rubbery properties are preferable. Those having such properties can be highly filled with an inorganic filler, and the resulting resin composition is flexible and easy to handle. In order to obtain a resin composition that is more flexible and easy to handle, a non-vulcanized rubber such as butyl or a polyethylene resin is preferably used. Instead, an epoxy resin is preferable from the viewpoint of improving the fire resistance by increasing the flame retardancy of the resin itself.

  Next, the heat-expandable layered inorganic material expands when heated, but the heat-expandable layered inorganic material is not particularly limited, and examples thereof include vermiculite, kaolin, mica, and heat-expandable graphite. Thermally expandable graphite is a conventionally known substance, and powders such as natural scaly graphite, pyrolytic graphite, and quiche graphite are mixed with inorganic acids such as concentrated sulfuric acid, nitric acid, and selenic acid, concentrated nitric acid, perchloric acid, A graphite intercalation compound was produced by treatment with a strong oxidant such as chlorate, permanganate, dichromate, dichromate, hydrogen peroxide, etc., and the layered structure of carbon was maintained. It is a kind of crystalline compound as it is.

  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 thermally expandable graphite is preferably 20 to 200 mesh. Examples of commercially available products of thermally expandable graphite include “GREP-EG” manufactured by Tosoh Corporation, “GRAFGUARD” manufactured by GRAFTECH, and the like.

  Next, when the expanded heat insulating layer is formed, the inorganic filler increases the heat capacity and suppresses heat transfer, and works as an aggregate to improve the strength of the expanded heat insulating layer. The inorganic filler is not particularly limited, and examples thereof include 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 And water-containing inorganic 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.

  In addition to these, inorganic fillers include calcium salts such as calcium sulfate, gypsum fiber, calcium silicate; silica, diatomaceous earth, dosonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite. , Imogolite, sericite, glass fiber, glass beads, silica 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 steel fiber, zinc borate, various magnetic powders, slag fiber, fly ash, dehydrated sludge, etc. Cited That. These inorganic fillers may be used alone or in combination of two or more.

  As a particle size of an inorganic filler, 0.5-100 micrometers is preferable, More preferably, it is 1-50 micrometers. When the addition amount of the inorganic filler is small, the dispersibility greatly affects the performance, so that a small particle size is preferable, and if it is 0.5 μm or more, the dispersibility is good. 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 proceeds, but the viscosity of the resin composition is decreased by increasing the particle size. However, a particle size of 100 μm or less is desirable in terms of the surface properties of the molded body and the mechanical properties of the resin composition. Commercially available inorganic fillers include, for example, aluminum hydroxide with “Hijilite H-31” (Showa Denko) having a particle size of 18 μm, “B325” (ALCOA) with a particle size of 25 μm, and calcium carbonate "Whiten SB red" (manufactured by Bihoku Powder Chemical Co., Ltd.) having a particle diameter of 1.8 µm, "BF300" (manufactured by Bihoku Powder Chemical Co., Ltd.) having a particle diameter of 8 µm, and the like.

  Furthermore, the resin composition constituting the thermally expandable refractory material may further contain a phosphorus compound in addition to the above-described components in order to increase the strength of the expanded heat insulating layer and improve the fireproof performance. The phosphorus compound is not particularly limited. For example, red phosphorus; various phosphate esters such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate; sodium phosphate, Examples thereof include metal phosphates such as potassium phosphate and magnesium phosphate; ammonium polyphosphates; compounds represented by the following chemical formula (1), and the like. Among these, from the viewpoint of fire prevention performance, red phosphorus, ammonium polyphosphates, and compounds represented by the following chemical formula (1) are preferable, and ammonium phosphates are more preferable in terms of performance, safety, cost, and the like. .

  In 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 Represents 6 to 16 aryloxy groups.

  As red phosphorus, commercially available red phosphorus can be used, but from the viewpoint of safety such as moisture resistance and not spontaneously igniting during kneading, a material in which the surface of red phosphorus particles is coated with a resin is 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, “FR CROS 484” and “FR CROS 487” manufactured by Budenheim Iberica.

  The compound represented by the chemical formula (1) is not particularly limited. For example, methylphosphonic acid, dimethyl methylphosphonate, diethyl methylphosphonate, ethylphosphonic acid, propylphosphonic acid, butylphosphonic acid, 2-methylpropylphosphonic acid, t- Butylphosphonic acid, 2,3-dimethyl-butylphosphonic acid, octylphosphonic acid, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphinic acid, methylethylphosphinic acid, methylpropylphosphinic acid, diethylphosphinic acid, dioctylphosphinic acid, phenylphosphine Examples include acid, diethylphenylphosphinic acid, diphenylphosphinic acid, bis (4-methoxyphenyl) phosphinic acid and the like. Among them, t-butylphosphonic acid is preferable in terms of high flame retardancy although it is expensive. The above phosphorus compounds may be used alone or in combination of two or more.

  The resin composition contains 10 to 350 parts by weight of the thermally expandable layered inorganic material and 30 to 400 parts by weight of the inorganic filler with respect to 100 parts by weight of the resin component such as the thermoplastic resin or epoxy resin. Is preferred.

  Moreover, the sum total of a thermally expansible layered inorganic substance and an inorganic filler has the preferable range of 50-600 weight part with respect to 100 weight part of resin components.

  Such a resin composition expands by heating to form a refractory heat insulating layer. According to this composition, the thermally expandable refractory material expands by heating such as a fire, and can obtain a necessary volume expansion coefficient. After expansion, a residue having a predetermined heat insulation performance and a predetermined strength is formed. It is also possible to achieve stable fireproof performance.

  When the total amount of the thermally expandable layered inorganic substance and 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 mechanical properties are 600 parts by weight or less. Is maintained.

  In addition to phenolic, amine-based, sulfur-based and other antioxidants, the resin composition can be used as a metal hazard inhibitor, antistatic agent, stabilizer, cross-linking agent, lubricant, softener, pigment, adhesive. Additives such as imparting resins and molding aids, and tackifiers such as polybutene and petroleum resins can be included.

  By kneading each component of the above resin composition 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, a planetary stirrer, etc., the resin composition Can be obtained.

  The thermally expandable refractory material can be obtained as a commercial product. For example, a fire barrier manufactured by Sumitomo 3M Limited (a thermally 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 Metal Paint Co., Ltd., medium-cut (thermally expandable refractory material comprising a resin composition containing polyurethane resin and thermally expandable graphite, expansion coefficient: 4 times , Thermal conductivity: 0.21 kcal / m · h · ° C.), and heat-expandable refractory materials such as Sekisui Chemical Co., Ltd. Fiblock.

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 a fire, and has the strength of the expansion layer, but it is heated under a 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-out portion of the resin component, and when it is 50 times or less, the strength of the expansion layer is maintained and flame penetration is prevented. Effect is maintained.

  The fireproof material 1 made of a laminate of the cushion layer 2, the thermal expansion layer 4 and the aluminum glass cloth 5 is provided with a cut 6 extending inwardly from the peripheral edge. In this embodiment, the notch 6 extends from the center position of one edge part to the vicinity of the opposing edge part among the four edge parts constituting the peripheral edge of the fireproof material 1. Due to the cuts 6, the fireproof material 1 has a pair of sections 7 that can be expanded from each other. As shown in FIG. 6, by separating the pair of sections 7 from each other, The tube 13 can be pushed into the tube. And by sandwiching the tube body 13 pushed into the fireproof material 1 between the pair of sections 7, the pair of sections 7 are in close contact with the outer peripheral surface of the tube body 13 while compressively deforming, so that the tube body 13 is surrounded. Fireproof material 1 can be arranged. In the present embodiment, the cut 6 extends from one edge portion of the peripheral portion of the fireproof material 1, but may extend from the corner portion of the peripheral portion to the vicinity of the opposing corner portion.

  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 a linear material or a plate material made of, for example, resin, rubber, or metal (including an alloy). In this embodiment, the shape holder 3 is a plate material curved in an expandable ring shape (C shape) 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 positioned between both end portions that are separated from each other, and a part of the notch 6 is sandwiched therebetween. Both ends of the shape holder 3 are separated and expanded together with the expansion of the pair of sections 7, but thereafter, both ends approach each other due to its shape retaining property (restoring force), and the shape holder 3 is restored to its original shape. Restore to ring shape (C shape). Therefore, after the pair of pieces 7 are expanded and the tube 13 is pushed into the inside from the notch 6, the fireproof material 1 is automatically turned on by the pair of pieces 7 based on the shape retainability (restoring force) of the shape holder 3. As a result, the fireproof material 1 (cushion layer 2) is held in its original shape (rectangular shape), so that the fireproof material 1 is maintained in a state of surrounding the tubular body 13.

  In addition, in this embodiment, the shape holder 3 is a ring shape (C shape) that can be expanded, but may be a plate material that is curved in a U shape as shown in FIG. In this case, the shape holder 3 is provided on the cushion layer 2 so as to sandwich all the portions of the cuts 6 therebetween. Further, when the shape holder 3 is 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 dimension of the shape holder 3 is not particularly limited, and can be appropriately set to a dimension that can exhibit the shape retainability.

  Next, a method for installing the fireproof material 1 described above with respect to the partition through portion 12 of the partition body 11 will be described.

  First, the tube body 13 is passed through the partition through portion 12 of the partition body 11. Next, as shown in FIG. 6, the pair of pieces 7 of the fireproof material 1 are separated from each other, and the tubular body 13 is pushed into the fireproof material 1 through the notch 6 from the fireproof section A side, for example. And the fire prevention material 1 is arrange | positioned so that the tubular body 13 may be enclosed by pinching | interposing the tubular body 13 pushed in the inside of the fire prevention material 1 between the pair of slices 7, and making it closely_contact | adhere to the outer peripheral surface of the tubular body 13. Then, the fireproof material 1 is fixed to the partition body 11 by fixing the fireproof material 1 to the outer surface of the partition body 11 using an adhesive, an adhesive, an adhesive tape, or the like, and is installed in the partition through portion 12. Thereby, the fire prevention structure 10 of the partition penetration part 12 is constructed | assembled.

  In the fire prevention structure 10 using the fire prevention material 1 described above, even if a fire occurs in the fire prevention section A or the fire prevention section B, the fire prevention material 1 closes the partition through portion 12 of the partition body 11 and the outer peripheral surface of the tube body 13. Therefore, it is possible to prevent the flame and heat from leaking from the partition through portion 12 to the adjacent fire prevention section. Moreover, even if the tubular body 13 is melted or burnt down in the event of a fire and the space is created by the thermal expansion layer 4 expanding due to the heat of the fire and filling the partition through portion 12, the thermal expansion layer 4 can A space formed by melting or burning the tube 13 is filled. Thereby, since the division penetration part 12 of the division body 11 can be obstruct | occluded completely, it can prevent that a flame and heat leak from the division penetration part 12 to the adjacent fire prevention division.

  As described above, according to the present embodiment, the fireproofing process can be realized by a simple operation of installing the fireproofing material 1 in the partitioning penetration part 12 of the partitioning body 11. For this reason, the complicated operation | work which fills a fire-resistant putty material is not required.

  Further, since the fireproof material 1 closes the partition through portion 12 of the partition body 11 and is in close contact with the outer peripheral surface of the tube body 13, the other side is visually recognized from one side of the fire protection sections A and B by the partition through portion 12. Can be prevented.

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

  Moreover, in the said embodiment, although the fireproof material 1 is comprised from the laminated body of the cushion layer 2, the thermal expansion layer 4, and the aluminum glass cloth 5, the fireproof material 1 should just be provided with the cushion layer 2 at least.

  Moreover, in the said embodiment, although the form holder 3 is comprised from the linear material or board | plate material which makes a C-shape or U-shape, shape retention property (restoring force) is given to the fire prevention material 1, and the notch | incision 6 If it functions so as to automatically close the pair of pieces 7 of the fireproof material 1 expanded by the above, those in various forms can be adopted.

  Moreover, you may install the fire prevention material 1 one each from the one side and the other side with respect to the division penetration part 12 of the division body 11. FIG.

  Further, in the above embodiment, it has been described that the work load can be reduced because the work of filling the fire-resistant putty material can be omitted, but the present invention does not deny the use of the fire-resistant putty material, and fire prevention as necessary. A gap or the like that may occur between the material 1 and the tube body 13 may be filled with a refractory putty. For example, as shown in FIG. 8, when a plurality (two in the illustrated example) of the pipe bodies 13 are surrounded by the fireproof material 1, a gap is generated between the fireproof material 1 and the pipe body 13. The fireproof performance of the fireproof structure 10 can be improved by burying the fireproof putty material 14 on the surface.

  In the above embodiment, the pair of pieces 7 of the fireproof material 1 are separated from each other and the tube body 13 is pushed into the fireproof material 1 from the notch 6, and then the tube body 13 is sandwiched between the pair of pieces 7. The fireproof material 1 is disposed so as to surround the tubular body 13 by being in close contact with the outer peripheral surface of the tube. However, as shown in FIG. 9 and FIG. 10, without providing the notch 6 in the fireproof material 1, the fireproof material 1 is simply wrapped around the tube body 13, and is compressed and deformed between the section through portion 12 and the tube body 13. It is arranged so as to surround the tubular body 13 by being sandwiched between them, and thereby, the fire prevention structure 10 of the partition through portion 12 may be constructed. Also by this, since the fireproof material 1 is in close contact with the outer peripheral surface of the tube body 13, the partition through portion 12 of the partition body 11 can be completely closed, so that flame or heat leaks from the partition through portion 12 to the adjacent fireproof section. This can be prevented, and the compartment penetration part 12 can prevent the other side from being seen from one side of the fire prevention compartments A and B. Moreover, the fireproof material 1 can be fixed to the partition 11 without using fixing means such as an adhesive, a pressure sensitive adhesive, and a pressure sensitive adhesive tape.

  9 and 10, the fireproof material 1 may be composed of only the cushion layer 2 described above, and has a two-layer structure in which the thermal expansion layer 4 is laminated on the cushion layer 2. You may be comprised with the laminated body. Furthermore, you may be comprised by the laminated body by which the aluminum glass cloth 5 was laminated | stacked on the laminated body of the cushion layer 2 or the cushion layer 2 and the thermal expansion layer 4. FIG.

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

Claims (6)

A fire prevention material that is formed in a partition of a building and is installed in a partition penetration through which at least one pipe is inserted,
With a cushion layer that has fire resistance and elasticity,
The fireproof material is provided with a notch extending inward from a peripheral portion, and has a pair of sections that can be expanded from each other, with a tubular body sandwiched between the notches.   The fireproof material according to claim 1, further comprising a shape holder that imparts shape retention to the cushion layer.   The fireproof material according to claim 1 or 2, wherein an aluminum glass cloth is attached to the surface of the cushion layer.   The fireproof material according to any one of claims 1 to 3, wherein the shape holder is made of a linear material or a plate material, and is curved so as to sandwich the cut. A compartment having a compartment penetration;
At least one tube inserted through the partition through-portion;
A fireproofing material according to any one of claims 1 to 4,
The pipe body is pushed into the fireproof material from the notch of the fireproof material, and is a fire prevention structure of a partition penetrating portion sandwiched between the pair of pieces. A compartment having a compartment penetration;
At least one tube inserted through the partition through-portion;
A fireproof material having fire resistance and elasticity,
The fireproof material is a fire prevention structure of a partition through portion that is wound around the tube while being compressed and deformed between the section through portion and the tube.