JP2016153588A - Fireproof fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting frame body that has excellent economical efficiency while maintaining fireproof performance, and fittings.SOLUTION: In an opening frame body 10 constituting a fireproof resin sash having the opening frame body 10 with an opening and window glass for closing the opening of the opening frame body 10, a first fire-resisting sheet 15A formed from a first thermally-expansible refractory material, and a second fire-resisting sheet 15B formed from a second thermally-expansible material starting expansion at a temperature lower than that of the first thermally-expansible material are arranged.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a joinery frame and joinery used for an opening of a structure such as a house, and more particularly, to a fireproof joinery frame and joinery constituting window frames of various sash windows, door frames of doors, and the like. .

  One of the performances required for fittings such as windows, shojis, doors (ie doors), doors, brans, and balustrades used in the openings of structures such as houses is to improve fire performance. It has been practiced to install a thermally expandable refractory material on the joinery. Conventionally, a thermally expansible material has been attached to the entire circumference of the frame so that the flame of the joinery installed in the opening of the structure does not penetrate. For example, Patent Document 1 describes that a thermally expandable refractory material is inserted into the entire length of a plurality of cavities inside an opening frame of a fireproof resin sash.

Japanese Patent No. 4691324

  In the past, one type of thermally expandable refractory material was used, but in the event of a fire, the fire goes upward, so the temperature of the lower part of fittings such as sashes and doors hardly rises, and the thermally expandable refractory material expands. Without fire resistance. Also, when fittings such as sashes and doors are in the corners of the room, the corners of the fittings are located at the edges of the space defined by the two walls and the ceiling. I couldn't put it out. Furthermore, once a type of thermally expandable refractory material is expanded by heating due to a fire or the like, it is difficult to additionally expand at another timing. For example, even if the frame of a joinery is deformed by heat, the frame Because it is difficult for the thermally expandable refractory material to expand with the addition of the thermally expandable refractory material in accordance with the deformation of the material, there may be a gap between the thermally expandable refractory material and the joinery, and the fire resistance may be impaired. there were.

  An object of the present invention is to provide a joinery frame and joinery that exhibit better fireproofing performance even in an environment in which the temperature is difficult to rise.

  Another object of the present invention is to provide a joinery frame and joinery in which the timing of expansion is controlled.

  In order to achieve the above object, the present inventors have arranged a plurality of thermally expandable refractory materials around the frame of the joinery with a sense to complete the present invention.

  That is, the present invention is as follows.

  Item 1. An opening frame that constitutes a fitting having an opening frame having an opening, a plate member that closes the opening of the opening frame, and an outer frame that supports the outer periphery of the plate, the opening frame In addition, the first thermally expandable refractory material and the second thermally expandable material that starts expansion at a temperature lower than that of the first thermally expandable material are disposed.

  Item 2. Item 2. The opening frame according to Item 1, wherein a second thermally expandable material is disposed at one corner of the opening frame.

  Item 3. Item 2. The opening frame according to Item 1, wherein the second thermally expandable material is disposed on at least one side of the opening frame.

  Item 4. The opening frame according to claim 3, wherein the second thermally expandable material is disposed on the lower frame.

  Item 5. Item 1 is characterized in that each side of the opening frame has a cavity extending along the longitudinal direction of each side, and a plurality of thermally expandable refractory materials are arranged at intervals in the cavity. The opening frame as described in any one of -4.

  Item 6. An outer peripheral frame constituting a joinery having an opening frame having an opening, a plate member closing the opening of the opening frame, and an outer peripheral frame supporting the outer periphery of the plate, the outer peripheral frame An outer peripheral frame characterized in that a first thermally expandable refractory material and a second thermally expandable material that starts expansion at a lower temperature than the first thermally expandable material are disposed.

  Item 7. Item 7. The outer peripheral frame according to Item 6, wherein the second thermally expandable material is disposed at one corner of the outer peripheral frame.

  Item 8. Item 7. The outer peripheral frame according to Item 6, wherein the second thermally expandable material is disposed on at least one side of the outer peripheral frame.

  Item 9. Item 5 is characterized in that each side of the outer peripheral frame has a cavity extending along the longitudinal direction of each side, and a plurality of thermally expandable refractory materials are arranged at intervals in the cavity. The joinery frame as described in any one of -8.

  Item 10. A joinery comprising at least one of the opening frame according to any one of Items 1 to 4 and the outer peripheral frame according to any one of Items 6 to 9, and a plate member that closes the opening of the frame.

  Item 11. Item 10. The joinery according to Item 10, which is a window or a door.

  ADVANTAGE OF THE INVENTION According to this invention, regardless of the attachment position of joinery, more favorable fireproof performance can be provided and the fire resistance of a structure improves.

The front view of the fireproof sash which concerns on 1st Embodiment of this invention. FIG. 2 is a cross-sectional view of main parts taken along line AA in FIG. 1. The principal part schematic front view explaining arrangement | positioning of the thermally expansible fireproof sheet in an opening frame. The principal part schematic front view explaining arrangement | positioning of the thermally expansible fireproof sheet in a shoji. The principal part schematic front view which shows another example of arrangement | positioning of the thermally expansible fireproof sheet in an opening frame. The principal part schematic front view which shows another example of arrangement | positioning of the thermally expansible fireproof sheet in an opening frame. The principal part schematic front view which shows another example of arrangement | positioning of the thermally expansible fireproof sheet in an opening frame. The principal part schematic front view which shows another example of arrangement | positioning of the thermally expansible fireproof sheet in an opening frame. The principal part schematic front view which shows another example of arrangement | positioning of the thermally expansible fireproof sheet in an opening frame. The principal part sectional drawing which shows another example of arrangement | positioning of a thermally expansible fireproof sheet. The front view of the door which concerns on 2nd Embodiment of this invention. (A) The principal part cross-sectional view in the BB line of FIG. 11, (B) The rough sectional view which shows the fireproof performance of the fireproof sheet 15 of FIG. 12 (A) at the time of fire. The schematic front view which shows arrangement | positioning of the thermally expansible fireproof sheet in the opening frame of the comparative example 1. FIG.

(First embodiment)
A first embodiment in which the present invention is embodied in a sash will be described with reference to FIGS.

  FIG. 1 is a front view of a sliding sash as a fireproof resin sash according to the present embodiment, and FIG. 2 is a cross-sectional view of an essential part taken along line AA of FIG. 1 and 2, a fireproof resin sash 1 is fixed to a rectangular opening formed in a structure such as a house, and has a rectangular opening frame 10 having an opening on the outer periphery, and its Two sliding shojis 20 and 20 that are movable in the horizontal direction are provided inside.

  The opening frame 10 as a joinery frame is composed of left and right vertical frame members 11 and 12 and upper and lower horizontal frame members 13 and 14, and the inside surrounded by the frame members 11 to 14 is an opening. . The two shojis 20 serving as the joinery frame close the opening and have substantially the same structure. From the left and right vertical members 21, 22 and the upper and lower horizontal members 23, 24, It is formed in a rectangular shape, and the vertical gutters on the center side overlap each other to form a summing part. The opening frame 10 and the shojis 20 and 20 are configured by combining vertical and horizontal frame members 11 to 14 and vertical and horizontal frame members 21 to 24, which are synthetic resin members, respectively.

  As described above, the fireproof resin sash 1 is configured such that the two shojis 20 and 20 are slidably supported by the opening frame 10, and the vertical and horizontal saddles constituting the outer frame of the shojis 20 and 20. 21-24 supports the window glass 25 which consists of iron netted glass located inside. The window glass 25 constitutes a fire-resistant plate material, and constitutes a partition surface that partitions the outside of the fire-proof resin sash 1 from the inside. In addition, as a fireproof board | plate material, not only the window glass which has translucency but what has light-shielding property like a metal plate material and a silicate board may be used.

  The configuration of the fireproof resin sash 1 of the present embodiment is not particularly limited, and the upper, lower, left, and right frame members 11 to 14 and the eaves members 21 to 24 constituting the sash are formed of a synthetic resin extrusion material. As long as it has a cavity extending along the longitudinal direction and the cross-sectional shape orthogonal to the longitudinal direction has one or a plurality of cavity spaces, any known form may be used. In addition, the synthetic resin used for each frame member and each brazing material constituting the sash may be any of hard polyvinyl chloride and ABS resin, but hard vinyl chloride is preferable from the viewpoint of advantageous fire prevention performance.

  The vertical frame members 11 and 12 constituting the opening frame body 10 are formed by cutting a long material obtained by extrusion molding a synthetic resin such as hard vinyl chloride, and penetrate the vertical frame members 11 and 12 in the longitudinal direction. Cavities 11a and 12a extending in this manner are provided. Further, the horizontal frame members 13 and 14 constituting the opening frame body 10 are also provided with cavities extending through the horizontal frame members 13 and 14 in the longitudinal direction, though not shown.

  The left and right vertical rods 21 and 22 constituting the shoji 20 are formed by cutting a long material obtained by extruding a synthetic resin in the same manner. 22a, respectively. Further, the reed members 23 and 24 constituting the shoji 20 are also provided with cavities extending in the longitudinal direction in the same manner, although not shown. And the window glass 25 which consists of iron netted glass is engage | inserted by the internal space of the vertical and horizontal brazing material. The window glass 25 is located at a stepped portion of the vertical gutters 21 and 22 and is fixed by a rubber sealant or a sealing agent 26.

  The fireproof resin sash 1 shown in the present embodiment is thermally expansible in the cavity of each frame material 11 to 14 and each frame material 21 to 24 which are synthetic resin members constituting the opening frame 10 and the shoji 20. A refractory sheet made of a refractory material is inserted. That is, a fire-resistant sheet 15 obtained by cutting a sheet of a heat-expandable fire-resistant material into a strip shape is inserted into the cavities 11 a and 12 a of the vertical frame member 11 along the longitudinal direction of the vertical frame member 11. The refractory sheet 15 has an adhesive layer on one side, and is inserted into two cavities of the vertical frame member 11 and attached by the adhesive layer. In addition, although not shown in figure, the fire-resistant sheet | seat is similarly inserted in the cavity extended through the longitudinal direction also to the horizontal frame materials 13 and 14. FIG.

  Further, a fireproof sheet 16 obtained by cutting a sheet of a heat-expandable fireproof material into a strip shape is also inserted into the cavities 21a and 22a of the vertical fences 21 and 22 of the shoji 20. The refractory sheet 16 has a flat plate shape and is inserted in contact with a wall surface parallel to the hollow glass surface. And although not shown in figure, the fireproof sheet | seat is inserted also in the upper and lower horizontal members 23 and 24 of the shoji 20 in the cavity extended through in a longitudinal direction.

  Thus, in the cavity of the opening frame 10 and the cavity of the shoji 20, 20, a large number of fireproof sheets 15, 16 are arranged in parallel along the surface of the window glass 25, and are adhered to the inner wall surface of the cavity. The layers are in close contact and form a refractory surface.

  The fireproof sheets 15 and 16 are formed by cutting a sheet material having a thickness of several millimeters of a thermally expandable fireproof material into a strip shape, and inserting the fireproof sheet along a wall surface parallel to the surface of the hollow window glass 25. Yes. Since the heat-expandable refractory material is inserted into the cavity of the synthetic resin member, it may be a molded body that matches the shape and dimensions of the cavity, and can be inserted regardless of the shape and dimensions of the cavity. Or a tape-shaped molded body is preferable. The details (composition, etc.) of the thermally expandable refractory material constituting the refractory sheets 15 and 16 will be described later.

  The thermally expansive refractory material constituting the refractory sheets 15 and 16 used in the present embodiment is a material that expands in volume and forms an insulative heat insulating layer when exposed to a high temperature such as a fire. A material that prevents the penetration of the flame by filling the portions where the synthetic resin members such as the frame members 11 to 14 and the brim members 21 to 24 are burned and burned with the expansion heat insulating layer of the thermally expandable refractory material. If it is, it will not be specifically limited. Examples of the heat-expandable refractory material include a molded body prepared from a resin composition in which a heat-expandable graphite is contained in a resin component described later.

The thermally expansive refractory material constituting the refractory sheets 15 and 16 is not particularly limited as long as it is a material in which the expansion component fills the portion burned and burned out of the synthetic resin member as described above, but preferably 50 kW / m ^2. The material has a volume expansion coefficient of 3 to 50 times after being heated for 30 minutes under the above heating conditions. When the volume expansion coefficient is 3 times or more, the expansion component fills the burned portion of the synthetic resin, and fire prevention performance is exhibited. Moreover, since the intensity | strength of an expansion | swelling heat insulation layer is maintained as the volume expansion rate is 50 times or less, and the effect which prevents the penetration of a flame is exhibited, the said range is preferable. More preferably, the volume expansion coefficient is 5 to 40 times, and more preferably 8 to 35 times.

  FIG. 3 is a schematic front view of a main part for explaining the arrangement of the heat-expandable fireproof sheet for explaining the arrangement of the fireproof sheet 15 in the opening frame 10, and shows only the fireproof sheet 15 arranged on the lower side in FIG. Show. In the present embodiment, the refractory sheet 15 is a first refractory sheet formed from a first thermally expansible material including a synthetic resin, thermally expandable graphite having a first expansion start temperature, and an inorganic filler. 15A, a synthetic resin, a second thermally expansive graphite having a second expansion start temperature lower than the first expansion start temperature, and a second thermally expandable material including an inorganic filler. It consists of two types of fireproof sheets 15 with the second fireproof sheet 15B. The second thermally expansible material constituting the second refractory sheet 15B starts expanding at a lower temperature than the first thermally expansible material constituting the first refractory sheet 15A.

  More specifically, the second refractory sheet 15B that starts to expand even at a low temperature is disposed at one corner of the opening frame 10, and the second refractory sheet 15B is disposed at the other part of the opening frame 10. A first refractory sheet 15A that starts expansion at a higher temperature is disposed. Specifically, the second refractory sheet 15B is disposed at the upper part of the left vertical frame member 11 and the left part of the upper horizontal frame member 13, and the remaining of the left frame member 11 and the upper horizontal frame member 13 A first second refractory sheet 15A is disposed on the right frame member 12 and the lower frame member 14 on the right side. The first fireproof sheet 15 </ b> A and the second fireproof sheet 15 </ b> B are continuously arranged on the four sides of the opening frame body 10, that is, the frame members 11 to 14.

  When the upper left of FIG. 3 corresponds to the upper side and the outside of the building, heat is not easily transmitted to one corner of the opening frame 10, but in the event of a fire, the second refractory sheet 15B is more than the first refractory sheet 15A. Because the second fireproof sheet 15B starts to expand at a lower temperature than the case where the first fireproof sheet 15A is used at the same location, the fireproof sheets 15A and 15B expand, The continuous fire prevention performance is exhibited on the opening frame 10. Such an opening frame 10 exhibits better fireproofing performance even in an environment in which the temperature is difficult to rise, and the expansion timing can be controlled by selecting the first fireproof sheet 15A and the second fireproof sheet 15B.

  As shown in FIG. 4, also in the shoji 20 (only one is shown), the fireproof sheets 15 and 16 are arrange | positioned in the cavity of the vertical and horizontal anchors 21-24 which comprise an outer periphery frame. The refractory sheet 16 may be a refractory sheet formed from one kind of thermal expansion material including synthetic resin, thermally expandable graphite, and an inorganic filler. A first refractory sheet 16A formed from a first thermal expansion material containing a thermal expansion graphite having an expansion start temperature of 1 and an inorganic filler; a synthetic resin; and a first lower than the first expansion start temperature. And a second refractory sheet 16B which is formed from a thermally expansible material containing an expansion start temperature of 2 and an inorganic filler, and starts expansion at a lower temperature than the first refractory sheet. May be. Even with such a shoji 20, it is possible to exhibit better fireproofing performance even in an environment where the temperature is difficult to rise, and the timing of expansion can be controlled by selecting the first fireproof sheet 16A and the second fireproof sheet 16B.

  The widths of the refractory sheets 15 and 16 may be equal to each other, whether shorter or longer than the width of the cavity. Further, the thickness of the fireproof sheets 15 and 16 may be thin or thick as long as the fireproof performance is satisfied.

  In the case of a strip-shaped or tape-shaped molded body, the fireproof sheets 15 and 16 are fixed in the cavity by a method using an adhesive or an adhesive, a method of fixing with a screw, and a foam such as a round shape in the space between the cavity and the sheet. And the like, or a method of injecting a foam material and then fixing it by foaming. Further, in the case of a molded body that matches the shape and size of the cavity, it may be inserted as it is, or the fixing method described above may be used.

  The heat-expandable refractory material constituting the refractory sheets 15 and 16 is preferably a rigid material from the viewpoint of ease of insertion and fixation into the cavity. For example, when the durometer hardness of the material forming the heat-expandable refractory material is measured by type A in accordance with JIS K7215, 65 or more is preferable. 75 or more is more preferable, and 80 or more is more preferable. The greater the durometer hardness, the more rigid the heat-expandable refractory material, and not only is it easier to insert into the cavity, but it can also be easily fixed in the cavity, making it a fireproof resin sash. Can be simplified.

  Next, the heat-expandable refractory material constituting the fireproof sheets 15 and 16 will be described in detail. The heat-expandable refractory material is a material that expands by heating, such as a synthetic resin kneaded with expandable graphite, and is usually a synthetic resin such as a thermoplastic resin, a rubber substance, or a thermosetting resin, and expandable graphite. And an inorganic filler.

  Examples of the thermoplastic resin include polypropylene resins, polyethylene resins, polybutene resins, polypentene resins and other polyolefin resins, polystyrene resins, acrylonitrile-butadiene-styrene resins, polycarbonate resins, polyphenylene ether resins, (Meth) acrylic resins, polyamide resins, polyvinyl chloride resins and the like can be mentioned.

  Examples of rubber materials include natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), 1,2-polybutadiene rubber (1,2-BR), styrene-butadiene rubber (SBR), chloroprene rubber ( CR), nitrile rubber (NBR), butyl rubber (IIR), ethylene-propylene rubber (EPR, EPDM), chlorosulfonated polyethylene (CSM), acrylic rubber (ACM, ANM), epichlorohydrin rubber (CO, ECO), polyvulcanized Examples thereof include rubber (T), silicone rubber (Q), fluorine rubber (FKM, FZ), urethane rubber (U) and the like.

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

  These resins may be used alone or in combination of two or more. Among these resins, when blending thermally expandable graphite described later, a polyolefin resin or a rubber substance is preferable from the viewpoint that molding is possible at or below the expansion temperature, and among them, a polyethylene resin is preferable.

  Moreover, in order to improve fireproof performance more, the above-mentioned rubber substance is preferable from the viewpoint that a large amount of filler can be blended.

  Further, as described above, in order to fix the fireproof sheets 15 and 16 made of a heat-expandable fireproof material in the cavity of the synthetic resin member or to be bonded to a die steel member to be described later, it adheres to the resin composition itself. As the method, for example, a tackifier resin, a plasticizer, an oil or fat, a low molecular weight compound or the like is added to the rubber substance. The tackifying resin is not particularly limited. For example, rosin, rosin derivative, dammar resin, copal, coumarone-indene resin, polyterpene, non-reactive phenol resin, alkyd resin, petroleum hydrocarbon resin, xylene resin, epoxy resin, etc. Is mentioned.

  Although it is difficult for a plasticizer that imparts tackiness to exhibit tackiness alone, it is possible to improve tackiness in combination with the tackifier resin. Examples of the plasticizer include phthalate ester plasticizers, phosphate ester plasticizers, adipic acid ester plasticizers, sebacic acid ester plasticizers, ricinoleic acid ester plasticizers, polyester plasticizers, and epoxy plasticizers. Agents, chlorinated paraffin, and the like.

  Furthermore, a phenol resin and an epoxy resin are preferable from the viewpoint of increasing the flame retardancy of the resin itself and improving the fire prevention performance. In particular, an epoxy resin is preferable because the selection of the molecular structure is wide and it is easy to adjust the fireproof performance and mechanical properties of the resin composition. The epoxy resin is not particularly limited, but is basically a resin obtained by reacting a monomer having an epoxy group with a curing agent. Examples of the monomer having an epoxy group include a bifunctional glycidyl ether type, a bifunctional glycidyl ester type, and a polyfunctional glycidyl ether type.

  In addition, other resins may be added to the epoxy resin. As described in US Pat. No. 4,691,324, the epoxy resin may be flexible so that it can be inserted into cavities of various shapes or dimensions. The method is described in US Pat. No. 4,691,324. By adjusting the flexibility of the epoxy resin, a flexible molded body can be obtained from a hard plate-like material, and fireproof sheets 15 and 16 can be inserted according to the shape and dimensions of various cavities. It becomes.

  The expandable graphite contained in the thermally expandable refractory material constituting the refractory sheets 15 and 16 is a conventionally known substance, and powders such as natural scaly graphite, pyrolytic graphite, and quiche graphite are concentrated sulfuric acid, nitric acid, and selenic acid. The graphite intercalation compound is produced by treating with an inorganic acid such as concentrated nitric acid, perchloric acid, perchlorate, permanganate, dichromate, hydrogen peroxide, etc. It is a crystalline compound that maintains the layered structure of carbon. It is preferable to use the heat-expandable graphite obtained by the acid treatment as described above, further neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound, or the like.

  Examples of the aliphatic lower amine include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, and butylamine. Examples of the alkali metal compound and the alkaline earth metal compound include hydroxides such as potassium, sodium, calcium, barium, and magnesium, oxides, carbonates, sulfates, and organic acid salts.

  The expansion start temperature of the expandable graphite differs depending on the material, and the first expansion start that forms the second expandable sheet 15B and the thermally expandable graphite having the first expansion start temperature that forms the first fireproof sheet 15A. Those skilled in the art can appropriately select a thermally expandable graphite having a second expansion start temperature lower than the temperature. For example, as the thermally expandable graphite constituting the first fireproof sheet 15A, CA-60 (expansion start temperature 210 ° C.) manufactured by Air Water Co., Ltd. can be mentioned, and the heat expandability constituting the second fireproof sheet 15B. As graphite, Air Water Co., Ltd. 50LTE-UN (expansion start temperature 170 degreeC) is mentioned.

  The particle size of the thermally expandable graphite is preferably 20 to 200 mesh. When the particle size is 200 mesh or larger, the degree of expansion of graphite is sufficient to obtain an expanded heat insulating layer, and when the particle size is 20 mesh or smaller, the dispersibility when blended into the resin is good and the physical properties are It is good. Examples of commercially available products of thermally expandable graphite include “GREP-EG” manufactured by Tosoh Corporation, “GRAFGUARD” manufactured by GRAFTECH, and the like.

  It is preferable to add an inorganic filler to the resin composition constituting the thermally expandable refractory material. 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. Among the inorganic fillers, hydrous inorganic substances and / or metal carbonates are preferable. Among water-containing inorganic substances, metal hydroxides such as calcium hydroxide, magnesium hydroxide, and aluminum hydroxide are particularly preferable because they produce a large amount of water and exhibit more fireproof performance. Among metal carbonates, metal carbonates belonging to Group II of the periodic table, such as calcium carbonate, magnesium carbonate, zinc carbonate, and strontium carbonate, are particularly preferable because carbonation reaction easily occurs.

  As a particle size of an inorganic filler, 0.5-100 micrometers is preferable, More preferably, it is 1-50 micrometers. When the amount of the inorganic filler added is small, the dispersibility greatly affects the performance, so that the particle size is preferably small, but if it is 0.5 μm or more, the dispersibility is good. When the addition amount is large, the viscosity of the resin composition increases and moldability decreases as the high filling progresses, but the viscosity of the resin composition can be decreased by increasing the particle size. Although a thing with a large diameter is preferable, the particle size of 100 micrometers or less is desirable at the point of the surface property of a molded object, and the mechanical property of a resin composition.

  As the inorganic filler, for example, for aluminum hydroxide, “Hijilite H-31” (manufactured by Showa Denko) having a particle size of 18 μm, “B325” (manufactured by ALCOA) having a particle size of 25 μm, and calcium carbonate, Examples include 1.8 μm “Whiteon SB Red” (manufactured by Bihoku Powdered Industries Co., Ltd.), “BF300” (manufactured by Bihoku Powdered Industries Co., Ltd.) having a particle size of 8 μm, and the like.

  In the resin composition constituting the heat-expandable refractory material, a phosphorus compound may be further added in addition to the above components in order to increase the strength of the expansion 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; melamine polyphosphate; compounds represented by the following chemical formula (1). 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 the chemical formula (1), R1 and R3 represent hydrogen, a linear or branched alkyl group having 1 to 16 carbon atoms, or an aryl group having 6 to 16 carbon atoms. R2 is a hydroxyl group, a linear or branched alkyl group having 1 to 16 carbon atoms, a linear or branched alkoxyl group having 1 to 16 carbon atoms, an aryl group having 6 to 16 carbon atoms, or a carbon number 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.

  When the phosphorus compound is exposed to a high temperature such as a fire, it changes to a polyphosphoric acid compound, which acts as an inorganic binder and exhibits the effect of improving the strength of the expanded heat insulating layer. Among the above metal carbonates, metal carbonates belonging to Group II of the Periodic Table, for example, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate, when used in combination with the phosphorus compound, particularly ammonium polyphosphate, Since the temperature of the decarboxylation reaction is reduced, the formation of the expanded heat insulating layer is promoted. Furthermore, by using the said compound together, the change to the polyphosphoric acid type compound of a phosphorus compound is accelerated | stimulated, and the effect which further improves the intensity | strength of an expansion | swelling heat insulation layer is exhibited. In particular, the combined use of ammonium polyphosphate and calcium carbonate is preferable because both of the above effects are most exhibited.

  In the resin composition constituting the thermally expandable refractory material, the amount of thermally expandable graphite is preferably 10 to 300 parts by weight with respect to 100 parts by weight of the resin component. When the blending amount is 10 parts by weight or more, a fireproof performance is exerted so as to fill the burned-out portion of the synthetic resin member constituting the resin sash with a low volume expansion coefficient, and when it is 300 parts by weight or less, the mechanical strength is maintained. . More preferably, it is 20-250 weight part.

  In the resin composition, the blending amount of the inorganic filler is preferably 30 to 400 parts by weight with respect to 100 parts by weight of the resin component. When the blending amount is 30 parts by weight or more, the heat capacity is high and sufficient fireproof performance is obtained, and when it is 400 parts by weight or less, the mechanical strength is maintained. More preferably, it is 40-350 weight part.

  In a resin composition, when adding a phosphorus compound, the compounding quantity of a phosphorus compound is 30-300 weight part with respect to 100 weight part of resin components. When the blending amount is 30 parts by weight or more, the effect of improving the strength of the expanded heat insulating layer is exhibited, and when it is 300 parts by weight or less, the mechanical strength is maintained. More preferably, it is 40-250 weight part.

  The total amount of thermally expandable graphite and inorganic filler is preferably 40 to 500 parts by weight with respect to 100 parts by weight of the resin component. When the total amount is 40 parts by weight or more, a sufficient expanded heat insulating layer is obtained, and when it is 500 parts by weight or less, the mechanical strength is maintained. More preferably, it is 70-400 weight part.

  Furthermore, when adding a phosphorus compound, 70-500 weight part is preferable with respect to 100 weight part of resin components for the total amount of a phosphorus compound, thermally expansible graphite, and an inorganic filler. When the total amount is 70 parts by weight or more, a sufficient expanded heat insulating layer is obtained, and when it is 500 parts by weight or less, the mechanical strength is maintained. More preferably, it is 100-400 weight part.

  In addition, the resin composition has a phenolic, amine-based, sulfur-based antioxidant, metal harm-preventing agent, antistatic agent, stabilizer, cross-linking agent, lubricant, softener as long as its physical properties are not impaired. A pigment or the like may be added. Moreover, a general flame retardant may be added and fire prevention performance can be improved by the combustion suppression effect by a flame retardant.

  The molded body of the resin composition constituting the heat-expandable refractory material is prepared by preparing a kneaded product of the resin composition and then molding, thereby forming a molded body that matches the shape and size of the cavity, or a sheet or roll. A strip-shaped or tape-shaped molded body can be obtained by cutting after producing a shaped molded body. Further, a method of adding a solvent at the time of kneading and then volatilizing the solvent after molding may be used.

  In the case of a kneaded product of the resin composition, each of the above-mentioned components is an extruder, a hanbury mixer, a kneader mixer, a kneading roll, etc. It can be obtained by using a known kneading apparatus. In the case of a two-component thermosetting resin, particularly an epoxy resin, a kneaded mixture of each of the two components and the filler is prepared separately by the kneading method, and is used with a plunger pump, a snake pump, a gear pump, etc. Each kneaded product may be supplied and mixed with a static mixer, a dynamic mixer or the like to produce a kneaded product.

  As a molding method of the resin composition, the kneaded material can be molded using a known method such as press molding, calender molding, extrusion molding, injection molding, or the like. In addition, as a method for molding a two-component thermosetting resin, particularly an epoxy resin, a known method may be used depending on the shape as appropriate, such as roll molding with SMC (Sheet Molding Compound) or the like, or coater molding with a roll coater or blade coater. Can be used.

  The curing method of the thermosetting resin, particularly the epoxy resin, is not particularly limited, and it is heated in the press or roll, or a heating furnace in the molding line, etc., or a molding and curing method is continuously performed, or it is put into a heating furnace after molding. It can carry out by well-known methods, such as a method to do. Moreover, when shape | molding using a solvent, a solvent can be volatilized by the method similar to the above.

  As a method for forming the sheet-shaped or roll-shaped molded body formed by the above-described forming method into a strip shape or a tape shape, a known method such as a cutting process, a slit process, or a ring cutting process can be used. As for the thickness in case the molded object of a resin composition is strip shape or tape shape, 0.1-6 mm is preferable. When the thickness is 0.1 mm or more, sufficient fireproof performance can be exhibited by the thickness of the expanded heat insulating layer formed by heating. Moreover, if it is 6 mm or less, the insertion into a cavity may be easy. More preferably, the thickness is 0.3 to 4 mm.

  In the resin composition, a net or a mat made of a noncombustible fibrous material may be laminated in order to further improve the strength of the expanded heat insulating layer. The net or mat made of non-combustible fibrous material is preferably made of inorganic fiber or metal fibrous material. For example, glass fiber woven fabric (glass cloth, roving cloth, continuous strand mat, etc.) or non-woven fabric ( A chopped strand mat or the like), a ceramic fiber woven fabric (ceramic cloth or the like) or a non-woven fabric (ceramic mat or the like), a carbon fiber woven or non-woven fabric, a net or a mat formed from a lath or a wire mesh is preferably used.

  Of these nets or mats, a glass fiber woven or non-woven fabric is preferred from the viewpoint of ease and cost when producing a heat-expandable refractory material. preferable. Furthermore, the glass cloth may be treated with a melamine resin, an acrylic resin, or the like because the handleability is improved and the adhesion with the resin is improved. In the case of a thermosetting resin, particularly an epoxy resin, the net or mat may be impregnated in the resin composition.

The net or mat made of non-combustible fibrous material has a weight per 1 m ² of 5 to 2000 g. When the weight per 1 m ² is less than 5 g, the effect of improving the shape retention of the expanded heat insulating layer is lowered, and when it exceeds 2000 g, the sheet becomes heavy and the construction becomes difficult. More preferably, it is 10-1000 g. The thickness of the net or mat made of this incombustible fibrous material is preferably 0.05 to 6 mm. When the thickness is 0.05 mm or more, when the thermally expandable refractory material expands, it can withstand the expansion pressure. Further, when the thickness is 6 mm or less, it is easy to insert the heat-expandable refractory material in a folded or rounded state. More preferably, it is 0.1-4 mm.

  In the thermally expandable refractory material, a base material layer may be laminated on one side or both sides of the molded body of the resin composition for the purpose of improving workability and strength of the expanded layer. Examples of the material used for the base material layer include cloth, nonwoven fabric made of polyester, polypropylene, and the like, paper, plastic film, split cloth, glass cloth, aluminum glass cloth, aluminum foil, aluminum vapor deposition film, aluminum foil laminated paper, and And a laminate of these materials. Among these base material layers, an aluminum foil laminated paper and an aluminum glass cloth are preferable because the polyethylene laminated polyester nonwoven fabric works advantageously in fireproof performance because it is easy to apply and apply a pressure-sensitive adhesive or an adhesive. Further, the thickness of the base material layer may be any as long as it does not affect fireproof performance or construction, but is preferably 0.25 mm or less.

  Furthermore, the heat-expandable refractory material may be formed by laminating a laminate of a net or mat made of a non-combustible fibrous material and a base material layer on a sheet surface made of a resin composition. As a laminated body, the laminated body of an aluminum glass cloth or a poly film and a glass cloth etc. are mentioned, for example. Examples of the method of laminating or impregnating a base layer or a net or mat made of a non-combustible fibrous material include a method of integrating at the stage of molding the resin composition.

  When a pressure-sensitive adhesive or adhesive is previously applied or applied to a heat-expandable refractory material and fixed in a cavity of a synthetic resin member, the pressure-sensitive adhesive or adhesive used is a resin of a synthetic resin member. Any one can be used as long as it adheres or adheres, and examples thereof include acrylic, epoxy, and rubber. In addition, when a base material having a pressure-sensitive adhesive or an adhesive layer is previously laminated on the molded body, it may be laminated at the time of molding, or a base material having a pressure-sensitive adhesive or an adhesive on both sides may be laminated on the molded body. .

  Since the heat-expandable refractory material is excellent in fireproofing performance as described above, it is possible to reduce the heat-expandable material necessary to exhibit fireproof performance, so the weight and weight of the fireproof resin sash can be reduced. Cost can be reduced. In addition, as described above, a strip-shaped or tape-shaped molded body can be easily manufactured using a known technique, and can be easily inserted regardless of the shape and size in the cavity, and can easily be fire-resistant resin. It becomes possible to manufacture a sash.

  The fireproof resin sash 1 of the present embodiment configured as described above is configured in such a manner that fireproof sheets 15 and 16 made of a thermally expanded fireproof material are placed in a cavity of a resin member made of a synthetic resin along a surface of a window glass or the like. By selecting and inserting so that a refractory surface is formed, the portion of the resin part of the synthetic resin that burns and burns out in the event of a fire is buried by the expansion insulation layer of the refractory sheet and the penetration of the flame or heat Can be prevented from entering.

  When a fire occurs on the indoor side or the outdoor side of the fireproof resin sash 1, the heat of the fire heats the fireproof sheets 15 and 16 inserted into the cavity of the synthetic resin member. All sides of the fireproof sheet are arranged in parallel along the window glass 25, and when the fireproof resin sash 1 is viewed from a direction perpendicular to the window glass 25, for example, most of the area is occupied by the fireproof sheets 15 and 16. Therefore, the fireproof heat insulating layer formed by thermal expansion is formed almost entirely without any gap, and there is no partial weak point, and the fireproof performance is stabilized.

  Further, since the fireproof sheets 15 and 16 face the heat source of the fire on a wide surface, the heat is transmitted efficiently and expands quickly. For this reason, when a fire occurs, fire prevention performance can be exhibited quickly. That is, when the refractory sheet is arranged perpendicular to the partition surface, heat such as fire is transmitted only from the end face of the refractory sheet, the thermal expansion is slow, and the fire prevention performance cannot be exhibited quickly. Then, rapid thermal expansion becomes possible.

  Further, the fireproof sheets 15 and 16 that are heat-expandable fireproof materials and the window glass 25 made of iron netted glass that is a fireproof plate material are configured to cover the opening of the fireproof resin sash 1, and the opening Is covered with a refractory surface, it is possible to remove local weak points at the time of a fire and improve fire prevention performance. If the fireproof sheet 15 itself has adhesiveness or is coated with an adhesive on one side, it can adhere to the inner wall surface of the cavity when it is inserted into the cavity of the synthetic resin member, and the construction becomes easy. .

  Further, by using a heat-expandable refractory material having a high volume expansion coefficient and strength of a heat-insulating expansion layer, it is possible to reduce the number of heat-expandable refractory materials to be inserted, thereby further reducing the cost. Further, by using a fire-resistant sheet of a molded body made of a resin composition, a strip-shaped or tape-shaped molded body can be easily manufactured using a known technique, and can be easily inserted regardless of the shape and size in the cavity. It is possible to easily manufacture a fireproof resin sash.

So far, the present invention has been described by taking the first embodiment as an example. However, the present invention is not limited to this, and various modifications as described below are possible.
In the embodiment of FIG. 3, the second fireproof sheet 15B is disposed on the upper part of the left vertical frame member 11 and the left part of the upper horizontal frame member 13, but only one of them is the second fireproof sheet. The sheet 15B is disposed, and the other one may be the first fireproof sheet 15A. Also in this case, it can be said that the fireproof sheet 15 </ b> B is disposed at one corner of the opening frame 10.
In the embodiment of FIG. 3, the first refractory sheet 15 </ b> A and the second refractory sheet 15 </ b> B are continuously disposed on the frame members 11 to 14 on the four sides of the opening frame 10, but are illustrated in FIG. 5. As described above, the fireproof sheets 15A and 15B may be configured to be arranged at intervals in the longitudinal direction of the frame members 11 to 14 on each side. In this case, the interval between the two adjacent refractory sheets 15A and 15B is such that if the interval is too large, the fire passes through in the event of a fire and the fire protection performance is impaired, but the refractory sheets 15A and 15B preferably expand during heating. The space between two adjacent fireproof sheets is filled, and the fireproof sheets are set to contact each other. However, since the opening frame 10 itself has fire resistance, it is included in the scope of the present invention even when the interval between two adjacent fireproof sheets cannot be filled. As one embodiment, the total length of a plurality of thermally expandable fireproof sheets arranged on each side or each frame member of the frame is 40% or more, 50% or more, 60% or more of the total length of the frame. , 70% or more, or 80% or more.
In the embodiment of FIG. 3, the second refractory sheet 15 </ b> B is arranged at the upper part of the left vertical frame member 11 and the left part of the upper horizontal frame member 13, but another frame of the opening frame body 10. The second fireproof sheet 15B may be disposed at the position of the material. For example, as shown in FIG. 6, the second refractory sheet 15B is disposed on the upper horizontal frame member 13 and the lower horizontal frame member 14, and the first refractory sheet 15A is disposed on the left and right vertical frame members 11 and 12. May be. The first refractory sheet 15A on the frame members 11 and 12 and the second refractory sheet 15B on the frame members 13 and 14 are continuously arranged in an annular shape. When a fire occurs, the fire goes upward, so even if the temperature on the lower side of the sash is low, the second fireproof sheet 15B on the lower lateral frame member 14 is at a lower temperature than the first fireproof sheet 15A. Starts expansion and exhibits better fire protection performance. Further, the second refractory sheet 15B of the upper horizontal frame member 13 may be changed to the first refractory sheet 15A, and a plurality of the refractory sheets 15A and 15B are provided on one frame member as shown in FIG. The refractory sheets may be spaced apart. Such an opening frame 10 also exhibits better fireproof performance even in an environment in which the temperature is difficult to rise, and the expansion timing can be controlled by selecting the first fireproof sheet 15A and the second fireproof sheet 15B. .
As shown in FIG. 7, the second fireproof sheet 15B is arranged on the lower horizontal frame member 14, and the first fireproof sheet is placed on the three sides of the upper horizontal frame member 13 and the left and right vertical frame members 11, 12. A sheet 15A may be disposed. In this figure, one continuous fire-resistant sheet 15A, 15B is arranged on each of the upper and lower horizontal frame members 13, 14, and a plurality of fire-resistant sheets 15A are arranged on the left and right vertical frame members 11, 12 at intervals. The refractory sheet 15 on each of the left and right vertical frame members 11 and 12 is shown to be continuous with the refractory sheet on the horizontal frame members 13 and 14 and spaced apart in the vertical direction. One continuous refractory sheet 15A may be arranged on the materials 11 and 12, or a plurality of discontinuous refractory sheets 15A and 15B are arranged at intervals on the upper and lower horizontal frame members 13 and 14, respectively. May be. The length of the fireproof sheet 15 on the upper and lower horizontal frame members 13 and 14 is 40% or more, 50% or more, 60% or more, 70% or more, or 80% or more of the total length of the frame member. Is preferred. As one embodiment, the total length of the plurality of thermally expandable fireproof sheets arranged on the vertical frame members 11 and 12 is 40% or more, 50% or more, 60% or more, 70% or more of the total length of the frame member, Alternatively, the length is 80% or more, but is not limited thereto. Even if the surfaces of all the frame members are not covered with the expansion material in the event of a fire, the frame itself has some fire resistance, so at least a fireproof sheet should be attached to the weak parts such as the horizontal frame members 13 and 14 and the missing parts. If pasted, fire resistance is demonstrated. Moreover, heat dissipation is also securable.
As shown in FIG. 8, in addition to the lower horizontal frame member 14, a second fireproof sheet 15 </ b> B may be further disposed below the left and right vertical frame members 11 and 12.
As shown in FIG. 9, the second refractory sheet 15 </ b> B is provided on the upper part of the left vertical frame member 11, the left part of the upper horizontal frame member 13, and the lower horizontal frame member 14. 15B may be arranged.
-As for the fireproof sheet 15 on each of the frame materials 11-14, the one fireproof sheet 15 may be arrange | positioned continuously and the some fireproof sheet 15 may be arrange | positioned at intervals. Moreover, the fireproof sheet 15 on a certain side may or may not be continuous with the fireproof sheet 15 on the adjacent side.
The arrangement of the fireproof sheet 15 and the arrangement of the fireproof sheet 16 may be the same or different.
-The position where the fireproof sheet 15 is arrange | positioned is not limited to the thing extended in the longitudinal direction of the frame materials 11-14 in the cavity of the frame materials 11-14. For example, portions where resin parts (piece members) are provided on the frame members 11 to 14 of the sash 1, or missing portions of the frame members 11 to 14 when the sash 1 is an aluminum sash (holes with screws). Since fire is easy to pass through the open portion and the cutout portion), it is desirable to preferentially place the refractory sheet 15 around 15 cm above and below it. Furthermore, the fireproof sheet 15 may be disposed on the outer surfaces of the frame members 11 to 14. If it sticks to the outer surface of the frame materials 11-14 in the position which fills the space between the opening frame 10 and the shoji 20 at the time of a heating, fireproof performance is provided to joinery.
The arrangement pattern of the refractory sheet 16 is not limited to that shown in FIG. 4, and is similar to the refractory sheet 15, such as another example of the refractory sheet 15 in FIG. 5. A plurality of refractory sheets 16 may be arranged on at least one side, that is, on the frame material constituting at least one side of the four frame members 21 to 24 constituting the shoji 10.
The position where the refractory sheet 16 is arranged is not limited to the one extending in the longitudinal direction of the frame members 21 to 24 in the cavities of the collar members 21 to 24. For example, a fire-resistant sheet is placed around 15 cm above and below the cracked portion (for example) of the shoji 20 such as a key (crescent) or a screw hole for attaching a handle portion because fire easily passes through it. It is desirable to place 16 preferentially.
Each of the refractory sheets 15 may not have the same shape and the same size, and may have different shapes and / or different same sizes.
As shown in FIG. 10, instead of or in addition to the fireproof sheet 15 shown in FIG. 2, the cavities 11a and 12a of the vertical frame members 11 and 12 and the cavities of the horizontal frame members 13 and 14 (not shown) A fireproof sheet 15 ′ may be inserted into a wall surface perpendicular to the glass surface of the window glass 25. Similarly to the refractory sheet 15, the refractory sheet 15 ′ includes a first refractory sheet 15A formed from the first thermally expandable material and a second refractory sheet 15B formed from the second thermally expandable material. It is a flat thermal expansion refractory material. The fireproof sheet 15 ′ can be disposed on at least one side of the opening frame 10 made of the frame members 11 to 14. For example, the fireproof sheet 15 ′ is disposed on the frame members 11 to 14, the fireproof sheet 15 B is disposed on at least one of the upper and lower horizontal frame members 13 and 14, and the first fireproof sheet 15 A is disposed on the left and right vertical frame members 11 and 12. Is placed.
The present invention is not only a fireproof resin sash, but also a sash, a shoji, a door (that is, a door), a door formed from metal, wood, or a composite material made of at least two of metal, wood, and resin. It also applies to joinery such as bran and bran.
(Second Embodiment)
11 and 12 show a second embodiment in which the present invention is embodied in a fire door. 11 is a schematic view showing an example of a fire door, FIG. 11 (A) is a cross-sectional view of the main part taken along line BB in FIG. 11, and FIG. 12 (B) is a view of FIG. 11 (A) when a fire occurs. 2 is a schematic cross-sectional view showing fireproof performance of a fireproof sheet 15. FIG.

  In FIG. 11, the fire door 2 includes a rectangular frame 30 having an opening, and a door main body 40 as a fire-resistant plate member that rotates via a hinge 35 therein. The door body 40 has a handle 42. In FIG. 11, the upper left corresponds to the upper side and the outside of the building.

  The frame body 30 as a joinery frame body is composed of left and right vertical frame members 31 and 32 and upper and lower horizontal frame members 33 and 34, and the inside surrounded by the frame members 31 to 34 is an opening. Referring to FIGS. 11 and 12A, the fireproof sheet 15 is disposed along the longitudinal direction of the frame members 31, 32, 33, and 34 in each of the frame members 31, 32, 33, and 34 of the frame body 30, respectively. ing. The arrangement of the plurality of fireproof sheets 15 is as described in the first embodiment.

  As shown in FIG. 12B, when a fire occurs from the direction of the arrow, the refractory sheet 15 expands due to heat and closes the gap 36. Thereby, the fire and smoke intrusion from between the door body 40 and the frame body 30 are reduced or prevented, and the fire resistance is greatly improved.

  In the second embodiment, the arrangement of the refractory sheets 15A and 15B can be modified in various manners as described in another example of the first embodiment.

  The disclosures of all patent applications and documents cited herein are hereby incorporated by reference in their entirety.

  Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited thereto.

1. Production of heat-expandable refractory sheet, bisphenol F type epoxy monomer ("E807" manufactured by Yuka Shell Co.) or urethane-modified bisphenol A type epoxy monomer ("E292" manufactured by Yuka Shell Co., Ltd.) having the blending amounts shown in Table 1. Diamine-based curing agent ("EKFL052" manufactured by Yuka Shell Co., Ltd.), thermally expandable graphite ("GREP-EG" manufactured by Tosoh Corporation), ammonium polyphosphate (Sumisafe P, manufactured by Sumitomo Chemical Co., Ltd.), melamine polyphosphate (MPP-A) , Sanwa Chemical Co., Ltd.) and calcium carbonate (“Whiteon BF-300” manufactured by Bihoku Flour & Chemical Co., Ltd.) were kneaded with a kneading roll to obtain a fire resistant resin composition. The obtained fire resistant resin composition was pressed and cured at 150 ° C. for 15 minutes by press molding to obtain a 1.6 mm thick thermally expandable fire resistant sheet used for fire resistance evaluation and shape retention evaluation (No. 1 1 fireproof sheet 15A).

  Next, a heat-expandable fireproof sheet having a thickness of 1.6 mm was obtained in the same manner except that 50LTE-UN manufactured by Air Water Co., Ltd. was changed to GREP-EG and the press conditions were changed to 120 ° C. (No. 2nd fireproof sheet 15B) whose thermal expansion start temperature is lower than 1 fireproof sheet 15A).

2. Fire resistance test For iron doors (height 2500 mm x width 850 mm, door thickness 40 mm, door core paper honeycomb structure (1.2 kg / m ² ), thickness of each iron plate on both sides of the core material 0.6 mm) The fireproof sheet prepared in “1. Production of heat-expandable fireproof sheet” having a width of 15 mm was attached as shown in the figure.

  In the first embodiment, as shown in FIG. 13, the second refractory sheet 15 </ b> B is attached to the upper side of the horizontal frame member 33 on the upper side of the door frame 30 and the left and right vertical frame members 31, 32, The first refractory sheet 15 </ b> A was affixed to the lower end portions of the frame members 31 and 32 and the lower horizontal frame member 34.

  In Example 2, as shown in FIG. 7, the first fire-resistant sheet 15 </ b> A is attached to the upper side of the horizontal frame member 33 on the upper side of the door frame 30 and the left and right vertical frame members 31, 32. The second refractory sheet 15B was affixed to the lateral frame member 34 on the side.

  Furthermore, in Comparative Example 1 (positive control), the first refractory sheet 15A was pasted around the four sides of the frame without any gaps.

A 60-minute heating test based on the ISO834 curve was performed on both sides of each door. The following 1. ~ 3. Those that conformed to all three judgments were evaluated as ◯ (passed). 1. At the upper end of the horizontal frame member 33 on the upper side of the door frame 30 and the left and right vertical frame members 31 and 32. 1. No continuous flame for 10 seconds or longer on the heated back side 2. No continuous flame squirting for 10 seconds or longer on the heated back side As a result, cracks, damage, gaps, and the like did not occur. As a result, in both Examples 1 and 2 and Comparative Example 1, the doors met the fireproof acceptance criteria after 60 minutes in both outdoor and indoor heating tests (Table 2). Moreover, since the expansion | swelling of the 2nd fireproof sheet 15B was quick compared with the comparative example 1 in Example 1, 2, deformation | transformation, such as the curvature of the door which is a test body, was suppressed.

  DESCRIPTION OF SYMBOLS 1 ... Fireproof resin sash as joinery, 2 ... Fireproof door as joinery, 10, 30 ... Opening frame body as frame, 20 ... Outer frame as frame, 11a , 12a, 21a, 22a ... hollow, 15, 15 '... fire-resistant sheet as a thermally expandable fire-resistant material, 15A, 16A ... first fire-resistant sheet, 15B, 16B ... second fire-resistant Sheet, 25 ... window glass as plate material, 40 ... door body as plate material, 11, 12, 13, 14, 21, 22, 23, 24, 31, 32, 33, 34 ... frame .

Claims (11)

An opening frame that constitutes a fitting having an opening frame having an opening, a plate member that closes the opening of the opening frame, and an outer frame that supports the outer periphery of the plate, the opening frame In addition, the first thermally expandable refractory material and the second thermally expandable material that starts expansion at a temperature lower than that of the first thermally expandable material are disposed. The opening frame according to claim 1, wherein a second thermally expandable material is disposed at one corner of the opening frame. 2. The opening frame according to claim 1, wherein the second thermally expandable material is disposed on at least one side of the opening frame. The opening frame according to claim 3, wherein the second thermally expandable material is disposed on the lower frame. Each side of the opening frame has a cavity extending along the longitudinal direction of each side, and a plurality of thermally expandable refractory materials are arranged at intervals in the cavity. The opening frame as described in any one of 1-4. An outer peripheral frame constituting a joinery having an opening frame having an opening, a plate member closing the opening of the opening frame, and an outer peripheral frame supporting the outer periphery of the plate, the outer peripheral frame An outer peripheral frame characterized in that a first thermally expandable refractory material and a second thermally expandable material that starts expansion at a lower temperature than the first thermally expandable material are disposed. The outer peripheral frame according to claim 6, wherein a second thermally expandable material is disposed at one corner of the outer peripheral frame. The outer peripheral frame according to claim 6, wherein a second thermally expandable material is disposed on at least one side of the outer peripheral frame. Each side of the outer peripheral frame has a cavity extending along the longitudinal direction of each side, and a plurality of thermally expandable refractory materials are arranged at intervals in the cavity. The joinery frame as described in any one of 5-8. A fitting having at least one of the opening frame body according to any one of claims 1 to 5 and the outer peripheral frame body according to any one of claims 6 to 9, and a plate member that closes the opening of the frame body. . The joinery according to claim 10 which is a window or a door.