JP3119045U - Fireproof compartment penetration structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for penetrating a fire prevention section that can cope with a wide variety of fire prevention section through holes, has a simple structure, is easy to construct, and can reduce costs.
SOLUTION: A penetration object such as a pipe 10 penetrates a through hole 5 formed in a partition wall 1 which is a partition part defining a fire prevention section A, B such as a building and is wound around the outer periphery of the pipe 10 And a tape-shaped expansion body 20 made of a thermally expandable material, and fillers 30 and 31 that close the gap between the outer periphery of the tape-shaped expansion body and the through hole. A polyethylene plate 35 is further provided as a lid having a shape larger than the diameter of the through-hole 5, and the outside of the filler is closed.
[Selection] Figure 2

Description

  The present invention relates to a structure that closes a through-hole and a pipe that penetrates a partition of a fire prevention compartment such as a building, and in the event of a fire, flames and smoke enter the adjacent compartment. TECHNICAL FIELD The present invention relates to a structure of a fireproof compartment penetrating portion that prevents the fire and a construction method of the fireproof compartment penetrating portion.

  In a conventional building, when a pipe is penetrated through a partition portion such as a floor, a wall, or a partition wall of a building, a through hole for penetrating the pipe is provided, and the pipe is penetrated through the through hole. Examples of pipes include water supply / drainage pipes, electric wire pipes, refrigerant pipes, and duct pipes. When this through-hole penetrates the fire protection compartment partition, a fire-protection method for filling and closing a gap such as a pipe or cable with a filler such as mortar for fire-proofing is performed. The clogging of the gap by the filler is a measure necessary for delaying and preventing the heat, flame, smoke, etc. caused by the fire generated on one side of the partition part from reaching the other side.

  If the pipe that penetrates the through-hole is a pipe that has heat resistance and non-flammability, such as a metal pipe, there is no particular problem even if the conventional fire-protection method is adopted for the penetration part of the fire-proof section, but the pipe is hard. In the case of synthetic resin pipes such as vinyl chloride pipes and cross-linked polyethylene pipes, cables, or heat insulation coated pipes such as heat insulation coated metal pipes and heat insulation coated resin pipes, if the above-mentioned fire protection method is adopted, the piping itself, cables and heat insulation coated pipes Since the covering material such as is inflammable or inferior in heat resistance, the synthetic resin or the covering material is burnt down by combustion or undergoes thermal deformation in the event of a fire, so that a gap is formed in the fire prevention compartment penetration part, and the partition part It is impossible to prevent heat, flame, smoke, etc. generated on one side of the gas from reaching the other side.

  In order to solve these problems, compartment penetration measures kits that use a material that expands when heated to fill the gaps of the through holes caused by a fire are marketed by various companies.

In addition, when a fire occurs, a conventional fire compartment penetrating member that can close a through hole with a material that expands with heat is filled with an elastic sealing material between a pipe (cable) and a thermal expansion material. Therefore, due to the elastic action of this elastic sealing material, even if there are changes in the inner diameter of the thermal expansion material and the outer diameter and shape of the pipe, this change is not absorbed and the sealing performance is not deteriorated. ) Some penetrating members can handle pipes having different diameters, shapes, and numbers (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 10-132147 (FIG. 1)

  By the way, although the section penetration measure kit of the above structure certainly exhibits its effect, because it is a kit, it is necessary to prepare each one according to the diameter of various resin tubes, cables, refrigerant tubes, etc. There is no particular problem at a site where there are few partition penetrations, but at sites where there are a wide variety of partition penetrations, a kit corresponding to each of them is required, which may cause confusion. And since these kits are high in cost, an inexpensive fire protection section measure construction method has been demanded.

  Further, in the fire compartment penetrating member described in Patent Document 1, if a fire occurs, the elastic sealing material is carbonized and extinguished, and the thermal expansion material is thermally expanded to push a pipe such as a metal tube or a synthetic resin tube. It crushes and closes the inside of the metal case, that is, the through-hole, preventing flames, smoke, and toxic gases from entering the adjacent chamber, but a sponge-like elastic sealing material with a high shrinkage rate is placed inside the thermal expansion material. There was a problem that it was difficult to load and construction was complicated.

  When piping or wiring penetrates the through-hole of the fire-blocking section through-hole, the gap may be filled with a filler or non-combustible material such as glass wool, rock wool, or mortar to make it fireproof. When stuffing from one side, it sometimes protrudes from the other side, and there was a problem that it looked bad. In addition, the amount of filling may be insufficient because it is difficult to understand how much it is filled. When a through hole is provided in a wall or floor of concrete or the like, it is common to place a pad or cylindrical filling in the part corresponding to the through hole in advance, then pour the concrete, harden and then remove the filling. Swells and dents often occurred around the holes. When the partition wall that defines the fire prevention section is a hollow wall, the through hole is drilled with a drill or the like, so that a burr is generated at the cut end. If there are burrs, bulges, or dents in the opening, you must set the metal fittings by removing the burrs with a conventional metal fitting fire prevention kit or filling the gap between the metal fitting and the opening with mortar or putty. , Extra materials, man-hours and time. Since screws are used to fix the metal fittings, there are problems in that it takes man-hours and time.

  The present invention has been made in view of such problems, and the object of the present invention is to cope with a wide variety of fire compartment through-holes, which is simple in construction and easy to construct, and also reduces costs. It is providing the fire prevention division penetration part structure which can be performed, and its construction method. In addition, even if there are burrs, bulges and dents around the through hole, it looks good and can be easily installed, materials can be reduced, man-hours can be reduced, construction pipes can be shortened, and fire resistance performance is stabilized. It is in providing the fire prevention division penetration part structure which can be performed, and its construction method.

  The present invention relates to a fire-blocking section through section structure in which a pipe or the like penetrates a through-hole formed in a partition wall having a hollow section in the middle that defines a fire-blocking section of a building. A pipe or the like around which a tape-like expansion body made of an expandable material is wound is penetrated, and a metal foil or a laminate based on the metal foil is laminated on the outer surface of the tape-like expansion body, and the metal foil or metal foil The gap between the outer periphery of the tape-like expansion body on which the laminate having the base material is laminated and the through hole is a fireproof section through-hole structure that is closed from the outside with a sealing material. Wrapping a tape-like expansion body in which a laminate based on metal foil is laminated on the outer periphery of a pipe or the like, and filling the sealing material in the gap with the through-hole, it can be easily blocked. it can.

  In addition, as the to-be-pierced object, there are a resin pipe such as a water supply / drain pipe, an electric pipe, a refrigerant pipe, a duct pipe, a metal pipe, an electric wiring cable, and the like.

  The present invention also defines a fire prevention section of a building. In a fire prevention section penetration structure in which piping or the like penetrates a through hole formed in a partition wall having a hollow portion in the middle, the through hole has an outer periphery. A pipe or the like around which a tape-like expansion body made of a heat-expandable material is wound is penetrated, and a metal foil or a laminate based on the metal foil is laminated on the outer surface of the tape-shaped expansion body. The gap between the outer periphery of the tape-shaped expansion body laminated with a foil-based laminate and the through hole is filled with a non-combustible material, and at least one outer edge of the through hole has an opening through which the pipe or the like passes. A fire prevention device in which a gap between the outer periphery of the tape-like expansion body on which the lid body has a partition wall is in contact with the partition wall and the opening is laminated with a sealing material. It is a partition penetration part structure.

  A lid having a shape larger than the diameter of the through hole is brought into contact with one side or both sides so as to close the through hole of the partition wall. The lid body preferably has an opening through which piping or the like passes, and a gap between the opening and the piping or the like is preferably sealed with a sealing material. According to this configuration, the incombustible material is surely pushed into the gap by the lid body so that no gap is formed, and the fire resistance performance can be improved. When the lid body is an incombustible material, the fire resistance performance can be further improved. Moreover, the sealing material can be pushed into the gap by providing the lid.

  The present invention also relates to a fire-blocking section through section structure in which a pipe or the like passes through a through-hole formed in a partition wall having a hollow section in the middle, which defines a fire-blocking section of a building. Is inserted into the sleeve, and the inside of the sleeve has a fire-blocking section penetration structure in which a pipe or the like around which a tape-like expansion body made of a thermally expandable material is wound is provided. Since the tape-like expansion body is located inside the sleeve and thermally expands between the sleeve and the piping, the expansion state of the tape-like expansion body is stable and the gap is maintained even with a partition wall having a hollow portion in the middle. Can be reliably blocked.

  The sleeve is a cylindrical body and is preferably made of metal or ceramic. It may be opened when piping or the like is passed along an axial cutting line, or a flat plate rounded and partially overlapped. The sleeve can be easily applied to existing pipes and the like by rounding a plate-like body such as a metal plate, inserting it into the through hole, expanding it, and bringing it into close contact with the inner periphery of the through hole.

  It is preferable that the length of the sleeve is equal to the thickness of the partition wall.

  Further, the present invention provides a fire prevention compartment penetration structure in which piping or the like penetrates a through hole formed in a partition wall having a hollow portion in the middle, which defines a fire prevention compartment of a building. A sleeve having a length equal to the thickness of the partition wall is inserted, and a pipe or the like around which a tape-like expansion body made of a heat-expandable material is wound is penetrated inside the sleeve. A non-combustible material is filled in the gap between the outer periphery of the sleeve and the sleeve, and at least one outer edge of the through-hole has a fire compartment penetrating portion structure in which a lid body having an opening through which the pipe or the like passes is in contact with the partition wall. is there.

The sleeve is in close contact with the through-hole, and the non-combustible material and the tape-shaped expansion body are positioned inside the sleeve, so that the tape-shaped expansion body and the filler on the inner side of the sleeve, even if the partition wall has a hollow portion in the middle. Stable and thermal expansion with piping. In addition, by providing a lid that closes the gap between the pipe and the like and the through hole, the incombustible material can be reliably pushed into the gap. Moreover, it can prevent that a nonflammable material is pushed in too much from one side and protrudes to the opposite side. Moreover, fireproof performance can be reliably exhibited by filling with a nonflammable material.
According to this configuration, the filler is surely pushed into the gap by the lid body so that no gap is formed, and the fire resistance can be improved. When the lid is a non-combustible material, the fire resistance can be further improved. Further, it is possible to prevent the tape-like expansion body, the sleeve and the filler from being displaced.

  The piping or the like includes a coated copper pipe and a cable in which a heat insulating material is wound around a copper pipe, and two of the coated copper pipe and one cable may be bundled and a tape-shaped expansion body may be wound around the outer periphery thereof. .

  Further, the present invention is a fire-blocking section penetration structure in which a pipe or the like penetrates a through-hole formed in a partition wall that defines a fire-proof section of a building, and a heat insulating material is wrapped around a copper pipe in the pipe or the like A copper pipe and a cable are included, and the through-hole is penetrated by a pipe or the like in which one of the copper pipe and one cable are bundled and a tape-like expansion body is wound around the outer periphery. It is a fire prevention compartment penetration structure in which the nonflammable material is filled in the gap between the outer periphery of the tape-like expansion body and the through hole.

  As can be understood from the above description, the fireproof compartment penetration structure of the present invention is such that the resin pipe, cable, or insulation sheath pipe inserted through the through-hole is subject to thermal deformation or burnt down in the event of a fire. Even if a void is generated in the through-hole, the tape-like expansion body wound around the penetration object is thermally expanded to form a fireproof heat insulating layer and close the void, thereby closing the through-hole of the fireproof compartment. Heat, flame, smoke, etc. generated on one side of the penetration portion can be prevented from reaching the other side.

  In addition, by positioning the sleeve on the outer periphery of the tape-shaped expansion body, the tape-shaped expansion body can reliably close the gap generated by heat even when the partition portion has a hollow portion. When a lid with a shape larger than the diameter of the through-hole is brought into contact with one or both sides so as to block the through-hole of the partition part, the tape-like expansion body, sleeve and filler are prevented from being displaced, and fireproof over a long period of time. Performance can be maintained and appearance can be improved. According to the construction method of the fire prevention compartment penetrating part according to the present invention, the construction is easy, and the heat, flame, smoke, etc. generated in one fire prevention compartment is reliably prevented from reaching the other compartment. This prevents the expansion of the tape-like expansion body, the sleeve and the filler, maintains the fire resistance for a long time, and improves the appearance by improving the appearance.

  Hereinafter, an embodiment of a fireproof compartment penetration structure according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a main part perspective view showing a relationship between a partition wall and piping as a partition part defining a fire prevention compartment, FIG. 2 is a principal part sectional view of a fire prevention compartment penetration part structure according to the present embodiment, and FIG. It is a principal part perspective view of the other example of a partition part.

  1 and 2, a partition wall 1 as a partition part that defines fire prevention sections A and B is obtained by fixing two gypsum boards 3 on both sides of a steel stud 2, for a total of four sheets. A cavity 4 is formed in the middle of the gypsum board 3. The partition wall 1 is formed with a through hole 5 that penetrates the adjacent fire prevention sections A and B in the horizontal direction. The through-hole 5 communicates between adjacent fire prevention compartments, and a pipe 10 or a cable is inserted as an object to be penetrated to connect the adjacent compartments.

  A partition wall 1A as a partition part shown in FIG. 3 is formed of a solid lightweight foam concrete plate (ALC plate) or mortar, and has a thickness of about 100 mm. Moreover, although not shown in figure, the slab floor formed by placing concrete on the deck floor board formed with the folded plate steel plate is also an example of the partition part which divides | segments the fire prevention division of an upper floor and a lower floor. In the case of a slab floor, a penetration object such as a pipe penetrates the slab floor as a partition portion in the vertical direction.

  The pipe-shaped expansion body 20 is wound around the outer periphery of the pipe 10 as the penetration object inserted through the through-hole 5 corresponding to the through-hole. When the tape-shaped expansion body 20 itself has adhesiveness, it fixes to the outer periphery of the piping 10 using the adhesiveness. If it is not sticky or low, fix it to the pipe using adhesive, adhesive, adhesive tape, etc. The tape-shaped expansion body 20 may be fixed to the pipe 10 using a tucker or the like.

  When the pipe 10 has already been passed through the through hole 5, the tape-like expansion body 20 made of a thermally expandable material is wound around a portion other than the through hole and is slid to the through hole 5 portion. In this case, when the tape-shaped expansion body itself has adhesive force, wind the tape-shaped expansion body with the release substrate laminated on at least one side at least one turn around the pipe so that the release substrate surface side is on the inside. After that, the release substrate at the overlapping portion of the tape-like expansion body is peeled to form a ring shape, and is slid to the through hole 5 portion. After the ring-shaped tape-shaped expansion body is slid, the release substrate is peeled off and fixed to the pipe. And the clearance gap between the through-hole 5 and the outer periphery of the tape-shaped expansion body 20 is closed by the filler 30 etc. which are mentioned later.

  The method of winding the tape-shaped expansion body is not particularly limited as long as it can be reliably fixed according to the material, such as an adhesive, a pressure-sensitive adhesive, a pressure-sensitive adhesive tape, a screw, a nail, and a tucker. You may fix the tape-shaped expansion body wound around piping etc. with a wire. The width of the tape-like expansion body (the width along the axial direction of the pipe or the like) is not particularly limited, but when the width is shorter than the thickness of the through hole, the tape-like expansion body is arranged so as to be substantially uniform in the thickness direction of the through hole. Is preferable, but it may be biased to either side. Moreover, when the said width | variety is longer than the thickness of a through-hole, it is preferable to arrange | position so that the protrusion length to the both sides of a through-hole may become substantially equal. It is desirable that the center of the penetration object and the center of the through hole substantially coincide.

  When the tape-shaped expansion body is wound around the penetration object, a tape-shaped one having a thickness of 0.3 to 6 mm is preferable, and volume expansion occurs when heat is applied. When the thickness is less than 0.3 mm, it is necessary to wind many times in order to obtain the necessary winding thickness. When the thickness exceeds 6 mm, it is difficult to wind to a predetermined thickness. It is preferable that the winding thickness of the tape-shaped expansion body is set to 0.5 to 30% of the outer diameter of the penetrated object such as a pipe passing therethrough. When the wrapping thickness is less than 0.5%, a sufficient fireproof heat insulating layer is not formed at the time of fire, and when it exceeds 30%, it is necessary to increase the opening area of the through hole.

  The width of the tape-like expansion body is preferably set to 25 to 150% of the thickness of the partition part in which the through hole is formed. If it is less than 25% of the thickness, a sufficient fireproof insulation layer cannot be obtained in the event of a fire, and if it exceeds 150%, the performance of closing the through hole is not improved, and the pipe can be bent in the vicinity of the through hole. The degree of freedom in piping design is reduced. More preferably, it is set to 50 to 130%.

  When there is a gap between the tape-shaped expansion body 20 and the through hole 5, the gap is closed with the filler 30. When the gap is large, as shown in FIG. 2A, the outside of the gap is closed with a filler 30 such as a sealing material to close the gap. When the gap is large, as shown in FIG. 2B, a filler 31 such as mortar is backfilled between the inside of the gypsum board 3 and the tape-like expansion body 20 to close the gap. Thereafter, the lids 35, 35 having a shape larger than the diameter of the through hole 5 can be fixed in contact with the surface of the partition wall 1. Moreover, it is preferable that the opening through which the central pipe 10 of the lid 35 passes and the outside thereof are filled with a filler 30 such as a sealing material to close the opening.

  As said filler 30, nonflammable materials, such as mortar, rock wool, ceramic wool, and glass wool, are suitable. Further, as a sealing material as a filler for closing the gap, an architectural sealing material specified in JIS A 5758, an injectable epoxy resin for building repair specified in JIS A 6024, and a plaster specified in JIS A 6914 are used. In addition to the joint material for board, mortar, putty and the like can be used.

  Examples of the lid 35 include polyethylene, polypropylene, polybutene, vinyl chloride, polyethylene terephthalate, polyacetal, nylon, ABS resin, phenol, polycarbonate, acrylic, EPT, NBR, butyl rubber, CR, fluoro rubber, silicone rubber, urethane rubber, In addition to a plate-like material formed of neoprene rubber, EPDM, or the like, a metal plate, a wooden plate, a calcium plate, a plaster board, or the like can be used. Moreover, the laminated body of said each material, an aluminum tape, etc. can be used.

  These lids 35 can be of a suitable shape such as a single circular shape, a piece that is divided and connected without gaps, or a piece that can be cut to allow the material to pass therethrough. It is preferable that the diameter is larger than the diameter of the through hole 5 and is in contact with the surface of the partition wall 1 having the through hole. The fixing to the partition wall 1 is not particularly limited as long as it can be fixed according to the material, such as an adhesive, a pressure-sensitive adhesive, a pressure-sensitive adhesive tape, a screw, a nail, and a tucker. Moreover, it may be formed from a thick plate, and the outer peripheral surface may be tapered so as to gradually increase in diameter toward the outside, and the through hole 5 may be press-fitted and fitted like a plug to be covered. In this case, a rubber stopper is preferable.

The tape-shaped expansion body 20 can be expanded by heating to form a refractory heat insulating layer, and has a volume expansion coefficient of 1.1 to 100 times after heating for 30 minutes under a heating condition of 50 kW / m ^2. Can be suitably used. For example, when the pipe 10 has a large diameter and a gap between the through hole 5 is small as a material to be penetrated, a tape-like expansion body 20 having a small volume expansion coefficient can be used. When the gap is large, the gap generated by fire or the like cannot be reliably closed unless the tape-like expansion body 20 has a large volume expansion coefficient. Thus, it is preferable to select a volume expansion coefficient according to the pipe diameter or the through-hole diameter.

  The tape-shaped expansion body 20 wound around piping etc. is formed from a thermally expansible material. Examples of the heat-expandable material include epoxy resin, phosphorus compound, neutralized heat-expandable graphite, and resin composition (A) containing an inorganic filler, thermoplastic resin and / or rubber substance, phosphorus compound, medium The heat-expandable graphite subjected to the sum treatment and the resin composition (B) containing an inorganic filler are used.

  First, the resin composition (A) will be described. Although it does not specifically limit as an epoxy resin, Basically, it can obtain by making the monomer and epoxy resin which have an epoxy group react. The curing method of the epoxy resin is not particularly limited, and can be performed by a known method. As the monomer having an epoxy group, for example, a bifunctional glycidyl ether type, glycidyl ester type, or polyfunctional glycidyl ether type monomer is used.

  Examples of the bifunctional glycidyl ether type monomer include polyethylene glycol type, polypropylene glycol type, neopentyl glycol type, 1,6-hexanediol type, trimethylolpropane type, propylene oxide-bisphenol A type, and hydrogenated bisphenol A. Monomers such as molds are used. Examples of the glycidyl ether type monomer include hexahydrophthalic anhydride type, tetrahydrophthalic anhydride type, dimer acid type, and p-oxybenzoic acid type monomer. As the polyfunctional glycidyl ether type monomer, for example, a phenol novolak type, an orthocresol novolak type, a DPP novolak type, a dicyclopentadiene / phenol type monomer or the like is used. These monomers having an epoxy group may be used alone or in combination of two or more.

  As the above-mentioned curing agent, a polyaddition type or a catalyst type is used. As the polyaddition type curing agent, for example, polyamine, acid anhydride, polyphenol, polymercaptan and the like are used. Examples of the catalyst-type curing agent include tertiary amines, imidazoles, Lewis acids, Lewis bases, and the like. The epoxy resin is excellent in shape maintenance after thermal expansion because the carbonized layer (combustion residue) formed during heating functions as a fireproof heat insulating layer and has a crosslinked structure.

  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, Metal phosphates such as potassium phosphate and magnesium phosphate; ammonium polyphosphates; compounds represented by the following chemical formula (Formula 1) are used. Among these, from the viewpoint of fire resistance, red phosphorus, ammonium polyphosphates, and compounds represented by the chemical formula (Chemical Formula 1) are preferable, and ammonium polyphosphates are more preferable in terms of performance, safety, cost, and the like.

  In the formula, R 1 and R 3 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 6 carbon atoms. -16 aryloxy groups are shown.

  Red phosphorus improves the flame retardant effect by adding a small amount. As red phosphorus, commercially available red phosphorus can also 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 “EXOLIT AP422”, “EXOLIT AP462” manufactured by Clariant, “Sumisafe P” manufactured by Sumitomo Chemical Co., “Terrage C60”, “Terrage C70”, “Terrage C80” manufactured by Chisso. It is done.

  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, methylnitylphosphinic acid, methylpropylphosphinic acid, diethylphosphinic acid, dioctylphosphinic acid, Examples include phenylphosphinic acid, diethylphenylphosphidic acid, diphenylphosphinic acid, and bis (4-methoxyphenyl) phosphinic acid. Of these, 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 above-mentioned thermally expandable graphite includes powders such as natural scaly graphite, pyrolytic graphite, and quiche graphite, inorganic acids such as concentrated sulfuric acid, nitric acid, and selenic acid, concentrated nitric acid, perchloric acid, perchlorate, and permanganese. It is a graphite intercalation compound produced by treatment with a strong oxidizing agent such as acid salt, dichromate, hydrogen peroxide, etc., and is a crystalline compound that maintains the layered structure of carbon. The heat-expandable graphite treated with acid as described above is further neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound, etc. To do.

  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 diameter of the neutralized thermally expandable graphite is preferably 20 to 200 mesh. When 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. When the particle size is larger than 20 mesh, there is an advantage that the degree of expansion of graphite is large. When kneading, the dispersibility deteriorates, and the deterioration of physical properties is inevitable. As a commercial item of the heat-expandable graphite neutralized, for example, “Frame Cut GREP-EG” manufactured by Tosoh Corporation, “GRAFGUARD” manufactured by UCAR Carbon Corporation, and the like can be given.

  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, water Hydrous minerals such as magnesium oxide, aluminum hydroxide, hydrotalcite; metal carbonates such as basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate, barium carbonate; calcium sulfate, gypsum fiber, calcium silicate, etc. Calcium salt: 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, nitrogen nitride Silicon, carbon black, graphite, carbon fiber, carbon balun, charcoal powder, various metal powders, potassium titanate, magnesium sulfate “MOS” (trade name), lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel Examples thereof include fibers, zinc borate, various magnetic powders, slag fibers, and fly ash.

  The said inorganic filler may be used independently or may use 2 or more types together. Among the above inorganic fillers, the combined use of a hydrous inorganic substance and a metal carbonate is particularly preferable. The hydrous inorganic substance and the metal carbonate are considered to contribute to the improvement of the strength of the combustion residue and the increase of the heat capacity because they function as aggregates.

  The above-mentioned water-containing inorganic substances such as magnesium hydroxide and aluminum hydroxide are endothermic due to the water produced by the dehydration reaction during heating, the temperature rise is reduced, and high heat resistance is obtained, and as a heating residue The oxide remains, and this is particularly preferable in that the residual strength is improved by acting as an aggregate. Magnesium hydroxide and aluminum hydroxide differ in the temperature range where the dehydration effect is exerted. Therefore, when used together, the temperature range where the dehydration effect is exhibited widens, and a more effective temperature rise suppressing effect can be obtained. preferable.

  The metal carbonates such as calcium carbonate and zinc carbonate are considered to promote expansion by reaction with the 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 the said inorganic filler, 0.5-100 micrometers is preferable, More preferably, it is 1-50 micrometers. And when this inorganic filler is added in a small amount, it is preferable that the particle size is small because the dispersibility greatly affects the performance. However, when the amount is less than 0.5 μm, secondary aggregation occurs and the dispersibility deteriorates. . When the amount of the inorganic filler added is large, the viscosity of the resin composition increases and moldability decreases as the high filling proceeds, but the viscosity of the resin composition can be decreased by increasing the particle size. From the point of view, those having a large particle size are preferred. Moreover, when a particle size exceeds 100 micrometers, the surface property of a tape-shaped expansion body and the mechanical physical property of a resin composition will fall.

  In addition, the inorganic filler is more preferably used in combination of a large particle size and a small particle size, and by using in combination, while maintaining the mechanical performance of the thermally expandable refractory layer, Filling is possible. As the inorganic filler, for example, “Hijilite H-42M” (made by Showa Denko) having a particle diameter of 1 μm, which is aluminum hydroxide, “Heidilite H-31” (made by Showa Denko) having a particle diameter of 18 μm, and “Whiteon SB red” (made by Shiraishi Calcium Co., Ltd.) having a particle size of 1.8 μm, which is calcium carbonate, “BF300” (made by Bihoku Flour Chemical Co., Ltd.) having a particle size of 8 μm, and the like.

  In the resin composition (A), the compounding amount of the phosphorus compound is preferably 50 to 150 parts by weight with respect to 100 parts by weight of the epoxy resin. When the blending amount is less than 50 parts by weight, sufficient shape retention cannot be obtained for the combustion residue, and when the blending amount is large, the mechanical properties are greatly deteriorated and cannot be used.

  In the resin composition (A), the blending amount of the heat-expandable graphite subjected to neutralization treatment is preferably 15 to 100 parts by weight with respect to 100 parts by weight of the epoxy resin. When the blending amount is less than 15 parts by weight, a fireproof heat insulating layer having a sufficient thickness is not formed, so that the fireproof performance is lowered. When the blending amount is more than 100 parts by weight, the mechanical strength is greatly lowered and cannot be used.

  In the resin composition (A), the blending amount of the inorganic filler is preferably 30 to 500 parts by weight with respect to 100 parts by weight of the epoxy resin. When the blending amount is less than 30 parts by weight, sufficient fire resistance cannot be obtained with a decrease in heat capacity. When the blending amount exceeds 500 parts by weight, the mechanical strength is greatly decreased and cannot be used.

  As said resin composition (B), what contains a thermoplastic resin and / or a rubber substance, a phosphorus compound, the heat-expandable graphite neutralized, and an inorganic filler is used. The thermoplastic resin and / or rubber substance is not particularly limited. For example, polyolefin resin such as polypropylene resin, polyethylene resin, poly (1-) butene resin, polypentene resin; polystyrene resin, acrylonitrile-butadiene -Styrene resin, polycarbonate resin, polyphenylene ether resin, acrylic resin, polyamide resin, polyvinyl chloride resin, phenol resin, polyurethane resin, polybutene, polychloroprene, polybutadiene, polyisobutylene, butyl rubber, nitrile rubber And hydrogenated petroleum resin.

  The said thermoplastic resin and / or rubber substance may be used independently, and 2 or more types may be used together. Further, in order to adjust the melt viscosity, flexibility, adhesiveness, etc. of the thermoplastic resin and / or rubber substance, a blend of two or more kinds may be used as the base resin.

  The thermoplastic resin and / or rubber substance may be subjected to crosslinking or modification within a range that does not impair performance. There is no particular limitation on the timing of crosslinking and modification of the thermoplastic resin and / or rubber substance, and a thermoplastic resin and / or rubber substance that has been previously crosslinked and modified may be used. When other components are blended, they may be crosslinked or modified at the same time. Moreover, after mix | blending another component with a thermoplastic resin and / or a rubber substance, you may bridge | crosslink and modify | denature, and this bridge | crosslinking and modification | denaturation may be performed in any step.

  The method for crosslinking the thermoplastic resin and / or the rubber substance is not particularly limited, and there are a conventional crosslinking method such as a crosslinking method using various crosslinking agents and peroxides, a crosslinking method by electron beam irradiation, and the like. Can be mentioned. The phosphorus compound, neutralized thermally expandable graphite and inorganic filler used in the resin composition (B) are the same as those used in the resin composition (A).

  In the resin composition (B), the blending amount of the phosphorus compound and neutralized thermally expandable graphite (the total amount of both) is 20 to 500 with respect to 100 parts by weight of the thermoplastic resin and / or rubber substance. Part by weight is preferred. When the total amount of both is less than 20 parts by weight, sufficient thermal expansion cannot be obtained, and when it exceeds 500 parts by weight, uniform dispersion becomes difficult, and it becomes difficult to form a uniform thickness.

  The weight ratio of the phosphorus compound to the neutralized thermally expandable graphite (thermally expandable graphite / phosphorus compound) is preferably 0.01 to 9. If the ratio of thermally expandable graphite increases, the graphite expanded during combustion will scatter and it will become difficult to form a sufficient refractory heat insulating layer, and if the ratio of phosphorus compound increases, a sufficient refractory heat insulating layer will not be formed. Heat insulation cannot be obtained.

  In the resin composition (B), the blending amount of the inorganic filler is preferably 50 to 500 parts by weight with respect to 100 parts by weight of the thermoplastic resin and / or rubber substance. When the blending amount is less than 50 parts by weight, sufficient fire resistance cannot be obtained, and when it exceeds 500 parts by weight, the mechanical strength is lowered. When the resin composition (B) is insufficient in tackiness, the tackiness can be imparted, for example, by adding a tackifier to the thermoplastic resin and / or rubber substance. It does not specifically limit as a tackifier, For example, tackifying resin, a plasticizer, fats and oils, a polymer low polymer, etc. are mentioned.

  The resin compositions (A) and (B) have flame retardants, antioxidants, metal damage inhibitors, antistatic agents, stabilizers, cross-linking agents, lubricants, softeners, and pigments as long as the physical properties are not impaired. A tackifying resin or the like may be added. In addition, the resin compositions (A) and (B) can be obtained by melt-kneading the respective components using a known kneading apparatus such as an extruder, a kneader mixer, a two-roller, a Banbury mixer, and the like. it can. These resin compositions can be formed into a tape-like expanded body by molding by a known method.

  The tape-shaped expansion body 20 may be in the form of a roll, or may be cut in advance according to the length of the tape-shaped expansion body 20 that is wound around a resin pipe, a cable, or a heat-insulated cladding tube. A base material or a release base material may be laminated on the tape-shaped expansion body 20 as long as the heat expansion performance is not impaired. It does not specifically limit as a base material, For example, paper, a woven fabric, a nonwoven fabric, a film, metal foil, a wire mesh, the laminated body of these base materials, etc. are used. By printing a grid pattern or band on the base material, mold release base material, or tape-like expansion body itself, the insertion depth into the through hole can be confirmed, and variation in fire resistance performance due to construction is reduced. be able to.

  As the paper, known paper such as kraft paper, Japanese paper, K liner paper or the like can be used. Non-combustible paper highly filled with aluminum hydroxide or calcium carbonate; Flame retardant paper containing flame retardant or coated with flame retardant; Rock wool, ceramic wool, inorganic fiber paper using glass fiber, carbon fiber paper, etc. Using can improve fire resistance.

  As the non-woven fabric, wet non-woven fabric made of polypropylene, polyester, nylon, cellulose fiber or the like, long-fiber non-woven fabric, or the like can be used. As the film, resin films such as polyethylene, polypropylene, polyamide, polyester, nylon, and acrylic can be used. As the metal foil, aluminum foil, stainless steel foil or the like 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, you 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. There is no restriction | limiting in particular in a mold release base material, The thing by which normal mold release processes, such as a silicone process, are mentioned, What was mold-released to these base materials may be used. A base material or a mold release base material may be laminated | stacked on the single side | surface or both surfaces of a tape-shaped expansion body, and a base material may be laminated | stacked on one side, and a mold release base material may be laminated | stacked on the other side. Further, the substrate may be used by being sandwiched between two tape-like expansion bodies.

When using the tape-shaped expansion body on which the release base material is laminated as described above, the release base material may be peeled off and then wound around a resin pipe, a cable, or a heat-insulated cladding tube. When laminating a base material on a tape-like expanded body, it is preferable that information is described on the base material. Moreover, when the tape-shaped expansion body is a scroll, it is preferable that information is described inside the core material. Information is information about applicable pipes, parts to be used, etc., and by describing them, confusion during construction can be prevented.

  In the fireproof compartment penetrating portion structure of the present embodiment configured as described above, the penetration object such as the pipe 10 around which the tape-like expansion body 20 is wound may be thermally deformed or burnt out by heating during a fire. Even if a void is generated in the through hole 5, the tape-like expansion body 20 expands due to the heat of the fire to form a fireproof heat insulating layer and closes the void in the through hole 5. Prevents generated heat, flame, smoke, etc. from reaching the other side.

  Since the tape-like expansion body 20 is cut and wound in accordance with the outer diameter of the resin pipe, cable, or heat-insulated coated tube at the time of construction, it is not necessary to prepare each member suitable for the outer diameter of the pipe. Confusion can be prevented. Moreover, when the tape-shaped expansion body 20 has adhesiveness, the winding | wrapping operation | work to resin piping, a cable, or a heat insulation cladding tube becomes easy, and construction can be simplified.

  In the embodiment shown in FIG. 4, the partition wall 1 is a steel stud 2 (50 × 40 × 0.00 mm) made by stretching two plaster boards 3 (Yoshino gypsum: GB-R, 12.5 mm thickness). A partition wall (thickness t = 100 mm in FIG. 4) was secured by screws on both sides of a 5t prism.

The tape-like expanded body 21 is composed of 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.), hydrogenated petroleum resin (“Escolets # manufactured by Tonex Co., Ltd.). 5320 ") 8 parts by weight, ammonium polyphosphate (" EXOLT AP422 "manufactured by Clariant) 100 parts by weight, neutralized heat-expandable graphite (" Frame Cut GREP-EG "manufactured by Tosoh Corporation), 30 parts by weight, hydroxylated A resin composition obtained after kneading 50 parts by weight of aluminum (“Hijilite H-31” manufactured by Showa Denko KK) and 100 parts by weight of calcium carbonate (“BF300” manufactured by Bihoku Powder) using a kneader. The aluminum foil release paper is laminated on one side by calendering, and a 6m long, 1000mm wide, 0.5mm thick A raw roll was prepared, and the obtained roll roll was cut into a width of 60 mm with a ring cutter. The volume expansion coefficient when heated for 30 minutes under an irradiation heat amount of 50 kW / m ² was 15 times.

  This tape-like expanded body 21 is wound around the outer surface of a polyethylene sheath 11 (corrugated tube) having an outer diameter of 42 mm (nominal diameter 36) for one turn so that the aluminum foil release paper is on the outer side (winding thickness 0.5 mm). A test specimen was prepared by inserting a cross-linked polyethylene pipe having an outer diameter of 27 mm (nominal diameter 20) as the inner pipe 12 into the sheath pipe 11. This test body was placed in a circular through-hole 5 (in the figure, through-hole diameter D = 50 mm) as a fire-protection section penetrating portion provided in the partition wall 1, and the winding portion of the tape-shaped expansion body 21 was on the left fire-protection section A. After passing through the wall so that it protrudes 10 mm, acrylic caulking material 30 (“Acrylic Coke” manufactured by Konishi Bond Co., Ltd.) is injected and fixed as a sealing material as a filler that closes the gap between the specimen and the through hole 5. did.

  The test specimen fixed to the partition wall 1 was heated from the fire prevention section B on the right side in FIG. 4 and subjected to a one-hour fire resistance test for the wall based on ISO 834. As a result, the sheath pipe 11 and the internal pipe 12 were almost melted. Although burnt out and voids were formed, the voids were filled with the expansion heat insulating layer of the tape-like expansion body 21 to suppress heat conduction, and no flame penetration was observed in the fire prevention section A on the non-heated surface side. In addition, if the tape-shaped expansion body 21 is formed so as to protrude from both wall surfaces of the partition wall 1, the effect is further improved.

Example 2 shown in FIG. 5 has 42 parts by weight of butyl rubber, 50 parts by weight of polybutene, 8 parts by weight of hydrogenated petroleum resin, 100 parts by weight of ammonium polyphosphate, and 30 parts by weight of neutralized thermally expandable graphite. Parts, 50 parts by weight of aluminum hydroxide, and 100 parts by weight of calcium carbonate were kneaded using a kneading roll in Example 2, and then a sheet having a thickness of 2 mm was produced by press molding the obtained resin composition. An aluminum glass cloth having a black grid pattern printed at intervals of 5 mm parallel to the length direction was bonded to one side of the obtained sheet, and cut into a width of 80 mm to produce a tape-like expansion body 22. The volume expansion coefficient when heated for 30 minutes under an irradiation heat amount of 50 kW / m ² was 17 times.

  The tape-like expanded body 22 was wound around the outer surface of a hard vinyl chloride tube 13 having an outer diameter of 114 mm (nominal diameter 100) so that the aluminum glass cloth was on the outer side (winding thickness: 2 mm) to prepare a test body. .

  As shown in FIG. 5, this test body was formed into a circular through hole 5 (in the figure, through hole diameter D = 125 mm) as a fireproof section penetrating portion provided in the same partition wall 1 as in Example 1. Insert the winding part of the tape-like expansion body 22 so that it protrudes 10 mm from the wall on the side of the fire protection section A, using the line on the glass cloth as a guide, and then insert acrylic caulking as a filler into the gap between the test body and the partition wall 1 Material 30 (“Acrylic Coke” manufactured by Konishi Bond Co., Ltd.) was injected and fixed.

  The specimen fixed to the partition wall 1 was heated from the right fire prevention section B and subjected to a one-hour fire resistance test for the wall as described above. As a result, the hard vinyl chloride tube 13 was almost melted and burned out. 5, voids were formed, but the voids were filled with the expansion heat insulating layer of the tape-like expansion body 22 to suppress heat conduction, and no flame penetration was observed in the fire prevention section A on the non-heated surface side. Also in this case, if the tape-like expansion body 22 is formed so as to protrude from both wall surfaces of the partition wall 1, the effect is further improved.

  Example 3 shown in FIG. 6 uses the same tape-like expansion body 22 as Example 2, and the aluminum glass cloth is placed on the outer surface of the hard polyvinyl chloride tube 13 having an outer diameter of 114 mm (nominal diameter 100). A sample was prepared by winding the sample around one turn (winding thickness: 2 mm).

As shown in FIG. 6, this test specimen was attached to a circular through hole 5 (in the drawing, the diameter D of the through hole D = 170 mm) as a fireproof compartment penetration provided in the same partition wall 1 as in Example 1. The wound portion of the cylindrical expansion body 22 is inserted so that it protrudes 10 mm from the wall surface on the fire prevention section A side, and then filled with 25 mm thick rock wool 31 (40 kg / m ³ ) and backfilled. The polyethylene plate 35 having a diameter of 230 mm and a thickness of 1.5 mm (with a hole having a diameter of 120 mm) as a lid is brought into contact with the partition wall 1 and fixed with double-sided tape. Acrylic caulking material 30 (“Acrylic coke” manufactured by Konishi Bond Co., Ltd.) was applied and fixed in the gap.

  The test body fixed to the hollow partition wall 1 was heated from the fire prevention section B on the right side and subjected to a one-hour fire resistance test for the wall, as described above. As a result, the hard vinyl chloride pipe 13 and the polyethylene plate of the lid 35 was almost melted and burned out, and a void was formed in the through-hole 5. However, the thermal insulation was suppressed by the expansion heat insulating layer of the tape-shaped expansion body, and heat conduction was suppressed. Was not. In addition, if the tape-shaped expansion body 22 is formed so as to protrude from both wall surfaces of the partition wall 1, the effect is further improved.

  Example 4 shown in FIG. 7 uses the same tape-like inflatable body 21 as in Example 1 so that the aluminum foil release paper is on the outer surface of the polybutene tube 14 having an outer diameter of 42 mm (nominal diameter 30). The test body was produced by winding 1 turn (winding thickness 0.5 mm).

  This test body is fire-proof section through-hole provided in ALC wall 1A (thickness: 100 mm) as a circular through-hole 5A (through-hole diameter D = 50 mm in the figure), and the winding portion of the tape-like expansion body 21 is fire-proof. After passing through 10 mm from the wall surface of section A, acrylic caulking material 30 (“Acrylic Coke” manufactured by Konishi Bond Co., Ltd.) is installed in the gap between the specimen and ALC wall 1A, and the specimen is fixed by closing the gap. did.

  The specimen fixed to the ALC wall 1A was heated from the fire prevention section B on the right side and subjected to a one-hour fire resistance test for the wall as described above. As a result, the polybutene pipe 14 as a pipe was almost melted and burned out. Although a space was generated in 5A, the space was closed by the expansion heat insulating layer of the tape-like expansion body 21, and heat conduction was suppressed, and no penetration of flame was observed in the fire prevention section B on the non-heated surface side. The width of the tape-like expansion body 21 in this example is about 50% of the depth of the through-hole 5, but the effect is further increased when the width is increased.

  Another embodiment of the present invention will be described in detail with reference to FIG. FIG. 8 is a perspective view of a main part showing a relationship between a partition wall and a pipe showing another embodiment of the structure for penetrating a fire prevention compartment according to the present invention. In addition, this embodiment is characterized in that a sleeve is located between the penetration object and the through hole as compared with the above-described embodiment. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 8, the sleeve 40 is made of metal or ceramic, and the sleeve 40 is inserted into the through hole 5, the tape-shaped expansion body is located inside the sleeve 40, and the pipe 10 is located further inside. The tape-shaped expansion body 20 may be wound around the pipe 10 or may be affixed to the inside of the sleeve 40. The non-combustible material such as mortar is provided in the gap between the pipe 10 and the sleeve 40 or the gap between the sleeve 40 and the through hole 5. The material is backfilled and the gap is closed. The length of the sleeve 40 is preferably equal to or greater than the thickness of the partition wall 1.

  In this embodiment, since the tape-like expansion body 20 expands along the inside of the sleeve 40, it is particularly effective when the partition wall 1 in which the through hole 5 is formed has the cavity 4. That is, when the tape-like expansion body 20 expands in volume by heating, if the air expands toward the cavity 4, the void where the pipes and the like are burned out cannot be reliably closed. Therefore, the air gap is reliably closed.

In Example 5 shown in FIG. 9, the same tape-like inflatable body 22 as in Example 2 is used, and an aluminum glass cloth is attached inside an iron sleeve 40 having an outer diameter of 120 mm, an inner diameter of 118 mm, and a length of 100 mm. An attached cylindrical molded body was obtained. This cylindrical molded body was attached to a hard vinyl chloride tube 13 having an outer diameter of 114 mm (nominal diameter 100) in an externally fitted state, thereby preparing a test body.
This test specimen was inserted into a circular through hole 5 (in the figure, through hole diameter D1 = 145 mm) as a fireproof compartment penetrating portion provided in the same partition wall 1 as in Example 1, and then the steel sleeve 40 and the partition were separated. A caulking material 30 similar to that in Example 3 was backfilled in the gap between the wall 1 and the through hole 5 to close the gap, and the test specimen was fixed.

  About the test body fixed to the said hollow partition wall 1, as a result of heating from the fire prevention zone B on the right side and performing the 1-hour fire resistance test for the wall, as a result, the hard polyvinyl chloride pipe 13 which is a pipe is almost melted. Although burnt out and voids were formed in the through holes 5, the voids were closed by the expansion heat insulating layer of the tape-like expansion body 22 to suppress heat conduction, and no penetration of flame was observed on the non-heated surface side. In the sleeve 40 of this embodiment, when the partition wall 1 has the cavity 4, the tape-like expansion body is prevented from expanding into the cavity, and the inside of the sleeve can be reliably closed.

In Example 6 shown in FIG. 10, bisphenol F type epoxy monomer (“E807” manufactured by Yuka Shell Co., Ltd.) 60 parts by weight, diamine-based curing agent (“EKFL052” manufactured by Yuka Shell Co., Ltd.) 40 parts by weight, 50 parts by weight of neutralized thermally expandable graphite (“Frame Cut GREP-EG” manufactured by Tosoh Corporation), 100 parts by weight of ammonium polyphosphate (“EXOLIT AP422” manufactured by Clariant), aluminum hydroxide (Showa Denko) 50 parts by weight of “Hijilite H-31” manufactured by the company and 100 parts by weight of calcium carbonate (“BF300” manufactured by Bihoku Flour Chemical Co., Ltd.) were kneaded with a kneading roll to obtain a resin composition. The resin composition is put into a press mold and heated at 100 ° C. for 30 minutes to be cured to produce a 1 mm thick plate-like expanded body, cut into a width of 110 mm, and A ring-shaped expansion body 23 was produced, and the volume expansion coefficient when heated for 30 minutes under an irradiation heat amount of 50 kW / m ² was 28 times.

  This tape-like expanded body 23 was wound around the outer surface of a rigid polyvinyl chloride tube 13 having an outer diameter of 114 mm (nominal diameter 100) by two turns (winding thickness 2 mm) and fixed with an adhesive tape to prepare a test body.

  As shown in FIG. 10, as shown in FIG. 10, as a fireproof compartment penetration provided in the same partition wall 1 as in Example 1, a circular through hole 5 (in the drawing, the diameter D2 of the through hole is 158 mm), After the sleeve 41 was brought into close contact so that the wound portion of the tape-like expansion body 23 protruded 10 mm from the non-heated surface, the gap between the tape-like expansion body 23 and the sleeve 41 was filled with mortar 32 as a filler and fixed.

  The sleeve 41 used in Example 6 may be formed by rounding an iron plate 42 (width 100 mm, length 500 mm, thickness 0.3 mm) as shown in FIG. 8B. The iron plate 42 is rounded and inserted into the through hole 5, and the iron plate 42 spreads due to its elasticity and adheres closely to the inner surface of the through hole 5, and the end portions overlap to form a sleeve 41. The width of the iron plate 42 is equal to or slightly larger than the depth of the through hole 5 (the above-mentioned t), and its length is slightly larger than the value obtained by multiplying the diameter of the through hole 5 by the circumference ratio. Ends can be stacked. The sleeve 41 is suitable when the pipe 10 is already installed and the pipe-shaped sleeve 40 cannot be passed therethrough. In addition, you may use not only an iron plate but another metal plate material.

  About the test body fixed to the said hollow partition wall 1, as a result of heating from the fire prevention zone B on the right side and performing the 1-hour fire resistance test for the wall, as a result, the hard polyvinyl chloride pipe 13 which is a pipe is almost melted. Although burnt out and voids were formed in the through holes 5, the voids were closed by the expansion heat insulating layer of the tape-like expansion body 23 to suppress heat conduction, and no flame penetration was observed on the non-heated surface side. Thus, when there is a sleeve on the outer periphery of the tape-shaped expansion body, the tape-shaped expansion body does not expand into the cavity portion 4 of the partition wall 1 when it expands, and when the pipe or the like is burnt out, the gap is surely formed. Can be blocked.

  In Example 7 shown in FIGS. 11 to 13, 42 parts by weight of butyl rubber, 50 parts by weight of polybutene, 8 parts by weight of hydrogenated petroleum resin, 100 parts by weight of ammonium polyphosphate, and heat-expandable graphite neutralized. 30 parts by weight, 50 parts by weight of aluminum hydroxide, and 100 parts by weight of calcium carbonate were kneaded using a kneader, and the resulting resin composition was calendered to form aluminum foil laminated paper on the surface and polyethylene resin on the back Films were laminated to produce a roll original having a length of 10 m, a width of 650 mm, and a thickness of 4 mm. The obtained roll material was cut into a width of 120 mm with a ring cutter to produce a tape-like expanded body 24.

The tape-like expanded body 24 is wound around the outer periphery of a coated copper tube in which a heat insulating material 16 having a thickness of 20 mm is wound around a copper tube 15 having an outer diameter of 50.8 mm so that the aluminum foil laminated paper is on the outer side. Then, the specimen C was prepared by fixing with an adhesive tape. In addition, the tape-like inflatable body 24 is coated with a copper tube 17 having an outer diameter of 25.4 mm and a heat insulating material 16 having a thickness of 20 mm wrapped around it, and a cable (CV 3.5 mm ² × 4C) 18 having an outer diameter of 13.5 mm. The test piece D was prepared by winding the two pieces around the outer periphery of the wire and winding it one turn so that the aluminum foil laminated paper was on the outside.

The test bodies C and D are formed in a circular through-hole 5 (diameter D = 182 mm in the figure) provided in the partition wall 1 and an iron plate 42 (width 100 mm, length 500 mm, thickness 0.3 mm) in a cylindrical shape. After being installed and inserted so that the wound portion of the tape-shaped expansion body protrudes 20 mm from the surface of the wall, an aluminum foil-clad polyethylene foam was fixed to one surface of the partition wall 1 as a lid 36 in contact. The aluminum foil-clad polyethylene foam as the lid 36 is formed by laminating a 0.08 mm thick aluminum foil, an adhesive layer (60 g / m ² ), a 30-fold expanded polyethylene foam, and an adhesive layer (60 g / m ² ). The one having a shape larger than the diameter of the through-hole 5 having a total thickness of 3 mm was used.

The lid body 36 has through holes 15a, 17a, 18a as notches through which the test bodies C, D are passed, and vertical cuts L are made from the outer periphery to these through holes, and the drilling size is set to an effective diameter such as piping. It is preferable to set substantially the same so that there is no gap around the test bodies C and D. In this way, after the lid body 36 is brought into contact with one surface of the partition wall 1 and the through hole 5 is closed, the density of the rock wool 31 is 60 kg / m ³ in the gap between the test body and the through hole. The lid 36 having the same shape made of aluminum foil-clad polyethylene foam was fixed to the partition wall 1 on the opposite surface of the partition wall 1 to close the through hole 5. In FIG. 13 a, the wall was heated from the fire prevention section B on the right side and subjected to a one-hour fire resistance test for walls based on ISO 834. As a result, the heat insulating material 16 was almost melted and burned out. The conduction was suppressed, and no flame penetration was observed in the fire prevention section A on the non-heated surface side. In the seventh embodiment, since the filling material 31 is closed by the lid body 36, the appearance is improved, and the filling material can be reliably filled, and variation in fire resistance is prevented and stabilized.

In Example 8 shown in FIG. 14, the test bodies C and D are placed in a circular through hole 5A (in the drawing, diameter D = 182 mm) provided in the ALC wall 1A, and the winding portion of the tape-like expansion body 24 is a wall. After being inserted so as to protrude 20 mm from the surface, the rock wool 31 was filled in the gap between the test body and the through hole 5A so as to have a density of 60 kg / m ³ and fixed. The specimens C and D fixed to the ALC wall 1A were heated from the fire prevention section B on the right side in FIG. 14 and subjected to a wall fire resistance test for 1 hour based on ISO 834. As a result, the heat insulating material 16 was almost melted and burned out. However, heat conduction was suppressed by the expansion heat insulation layer of the tape-shaped expansion body 24, and no penetration of flame was observed in the fire prevention section A on the non-heated surface side.

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 are possible without departing from the spirit of the present invention described in the claims. Design changes can be made. For example, although the example of the partition wall which partitions off adjacent fire prevention compartments as a partition part was shown, it is needless to say that this invention is applicable also to partition floors, such as a concrete slab which partitions over the upper and lower floors.
Moreover, although the example of piping was mainly demonstrated as a to-be-pierced object which penetrates the through-hole of a partition part, signal lines, such as wiring of an electrical installation, cables, telephone wiring, and television, may be used as a to-be-pierced object. Then, various wirings and cables may be bundled and penetrated.

The principal part perspective view which shows the relationship between the partition wall which shows one Embodiment of this invention, and piping. (A) is principal part sectional drawing of the fire prevention division penetration part structure which shows one Embodiment of this invention, (b) is principal part sectional drawing of the fire prevention division penetration part structure which shows other embodiment. The principal part perspective view of the other example of a partition part. The principal part sectional drawing of the 1st Example of the fire prevention division penetration part structure which concerns on this invention. Sectional drawing of the principal part of 2nd Example of the fire prevention division penetration part structure which concerns on this invention. Sectional drawing of the principal part of 3rd Example of the fire prevention division penetration part structure which concerns on this invention. Sectional drawing of the principal part of 4th Example of the fire prevention division penetration part structure which concerns on this invention. (A) is a principal part perspective view which shows the relationship between the partition wall which shows other embodiment of this invention, and piping, (b) is a perspective view which shows the other example of a sleeve. Sectional drawing of the principal part of 5th Example of the fire prevention division penetration part structure which concerns on this invention. Sectional drawing of the principal part of 6th Example of the fire prevention division penetration part structure which concerns on this invention. The principal part perspective view of 7th Example of the fire prevention division penetration part structure which concerns on this invention. The perspective view of the cover body used for the fire prevention division structure of FIG. (A) is a longitudinal cross-sectional view of the through-hole part of FIG. 11, (b) is a principal part side view. Sectional drawing of the principal part of 8th Example of the fire prevention division penetration part structure which concerns on this invention.

Explanation of symbols

A, B Fire prevention compartment 1 Partition wall (partition part),
1A ALC wall (partition),
5 through holes,
10,12 Piping (penetrated object),
11 sheath pipe (piping),
13 Hard vinyl chloride pipe (pipe),
14 Polybutene pipe (pipe),
20, 21, 22, 23, 24 tape-like expansion body,
30 Caulking material (filler),
31 Rock wool (filler),
32 mortar (filler),
35 Polyethylene plate (lid),
36 Aluminum foil-clad polyethylene foam (lid),
40,41 sleeve,
42 Iron plate

Claims (7)

In the structure of the fire-blocking section penetrating portion that defines the fire-blocking section of the building and through which the pipes penetrate the through-hole formed in the partition wall having a hollow portion in the middle,
In the through hole, a pipe or the like around which a tape-like expansion body made of a thermally expandable material is wound is penetrated.
A laminated body based on metal foil or metal foil is laminated on the outer surface of the tape-shaped expansion body,
A structure for penetrating a fire compartment, wherein a gap between the outer periphery of the tape-like expansion body on which the metal foil or a laminate based on the metal foil is laminated and the through hole is closed from the outside with a sealing material . In the structure of the fire-blocking section penetrating portion that defines the fire-blocking section of the building and through which the pipes penetrate the through-hole formed in the partition wall having a hollow portion in the middle,
In the through hole, a pipe or the like around which a tape-like expansion body made of a thermally expandable material is wound is penetrated.
A laminated body based on metal foil or metal foil is laminated on the outer surface of the tape-shaped expansion body,
The gap between the outer periphery and the through hole of the tape-shaped expansion body in which the metal foil or a laminate based on the metal foil is laminated is filled with a non-combustible material,
On the outer edge of at least one of the through holes, a lid having an opening through which the pipe or the like passes is in contact with the partition wall,
A fireproof compartment penetration structure characterized in that a gap between the outer periphery of the tape-like expansion body on which the metal foil or a laminate based on the metal foil is laminated and the opening is closed with a sealing material. In the structure of the fire-blocking section penetrating portion that defines the fire-blocking section of the building and through which the pipes penetrate the through-hole formed in the partition wall having a hollow portion in the middle,
A sleeve is inserted into the through hole,
A fireproof compartment penetration structure, wherein a pipe or the like around which a tape-like expansion body made of a thermally expandable material is wound is passed through the inside of the sleeve.   The length of the said sleeve is equivalent to the thickness of the said partition wall, The fire prevention division penetration part structure of Claim 3 characterized by the above-mentioned. In the structure of the fire-blocking section penetrating portion that defines the fire-blocking section of the building and through which the pipes penetrate the through-hole formed in the partition wall having a hollow portion in the middle,
In the through hole, a sleeve having a length equivalent to the thickness of the partition wall is inserted,
Inside the sleeve, a pipe or the like in which a tape-like expansion body made of a thermally expandable material is wound around the outer periphery is penetrated,
Incombustible material is filled in the gap between the outer periphery of the tape-like expansion body and the sleeve,
A fire-blocking section penetration structure, wherein a lid having an opening through which the pipe or the like passes is at least one outer edge of the through-hole, and is in contact with a partition wall. The piping and the like include a coated copper tube and a cable in which a heat insulating material is wound around a copper tube,
6. The fireproof compartment penetration structure according to any one of claims 3 to 5, wherein a tape-like expansion body is wound around the outer periphery of the one coated copper tube and two cables. . A fire zone penetrating structure in which piping or the like penetrates a through hole formed in a partition wall defining a fire zone of a building,
The piping and the like include a coated copper pipe and a cable in which a heat insulating material is wound around a copper pipe,
In the through hole, a pipe or the like in which a tape-like expansion body is wound around the outer periphery of the one coated copper tube and two cables is penetrated,
A fireproof compartment penetrating portion structure in which a nonflammable material is filled in a gap between an outer periphery of the tape-like expansion body and a through hole.