JP5453336B2 - Fireproof reinforcement method for building components - Google Patents

Description

  The present invention relates to a fireproof reinforcing building member and a fireproof reinforcing method for a building member, and more particularly to a fireproof reinforcing building member such as a door and a sash installed in an opening of a structure such as a house and a fireproof reinforcing method for a building member.

Conventionally, a door, a sash, etc. are used as a building member installed in an opening of a structure such as a house.
When a fire occurs inside or outside a structure such as a house, it is necessary to prevent the fire from spreading. Increasing the fire resistance of building members such as doors and sashes is an important issue so that fire flames and the like do not penetrate through the building members such as doors and sashes.
In connection with this problem, a technique for improving the fire resistance of a sash has been proposed.
Specifically, a sash having a frame material made of synthetic resin and a fire-resistant plate material is provided with a plurality of cavities in the longitudinal direction of the frame material used for the sash, and thermal expansion is performed in the cavities. A fireproof resin sash having a fireproof member and a wood member inserted therein has been proposed (Patent Document 1).
Since this fireproof resin sash has a heat-expandable fireproof member inserted in the longitudinal direction of the frame material, even if the frame material made of synthetic resin melts and burns out, the thermal expansion residue from the heat-expandable fireproof member is a fire flame. And cut off heat. Thereby, the fire resistance of a sash can be improved.

Japanese Patent Laying-Open No. 2005-9305

As described above, when a thermally expandable refractory member is inserted in advance into the cavity of the frame member used for the sash, the fire resistance of the sash can be enhanced by the above prior art.
However, if the heat-expandable refractory member is not inserted into the frame material used in the sash, the heat-expandable refractory member must be inserted into the frame material used in the sash afterwards. .
Since the cavity inside the frame member used for the sash is usually in a position that cannot be seen from the outside, when inserting a thermally expandable fireproof member inside the frame member cavity, the sash must be a structure such as a house. It is necessary to disassemble the frame material by removing it from the opening of the object.
However, when the opening faces the outside of a structure such as a house, if the sash is removed from the opening, there is no separation between the inside and the outside of the structure such as a house. There is a problem that the temperature control inside the structure becomes difficult.
In addition, when it rains outside and wind is blowing, there is a problem that these rain and wind enter into a structure such as a house.
These problems become more serious when the house is a high-rise apartment, a high-rise building, or the like, when the season is heavy, such as rainy season, or when there is a lot of winter snow.
In order to deal with this problem, a means for closing the opening with the closing plate while preparing a separate closing plate and removing the sash from the opening of a structure such as a house may be considered.
However, since the sash shapes at the actual construction site are diverse, it is necessary to prepare a large number of closing plates according to the sash shape at each construction site, which complicates the work of improving the fire resistance of the sash. There was a problem that took time.

  An object of the present invention is to provide a fireproof reinforcing building member such as a door and a sash, and a fireproof reinforcing method for a building member, which are easy to improve the fire resistance.

  As a result of intensive studies by the present inventors in order to solve the above-mentioned problems, a fireproof reinforced building member having a hollow portion, in which a thermally expandable fireproof material is injected into the building member, is an object of the present invention. As a result, the present invention has been completed.

That is, the present invention
[1] A building member having a hollow portion,
Thermally expandable refractory material is injected into the building member,
The viscosity at 25 ° C. of the thermally expandable refractory material before being injected into the building member is in the range of 1000 to 100,000 mPa · s,
After the said heat-expandable refractory material is inject | poured in the inside of the said building member, it loses fluidity | liquidity inside the said building member in 25 degreeC, The fireproof reinforcement building member characterized by the above-mentioned is provided.

One of the present invention is
[2] The building member has at least a frame member in which a cavity is formed inside along the longitudinal direction, and a plate material having fire resistance,
The fire-resistant plate material is supported by the frame material,
The fire-resistant reinforced building material according to the above [1], wherein the thermally expandable refractory material is injected into a cavity inside the frame member.

One of the present invention is
[3] The building member includes two or more plate materials,
The fire-resistant reinforced building material according to the above [1] or [2], in which the thermally expandable refractory material is injected into a space formed between plate members facing each other.

One of the present invention is
[4] The fire-resistant reinforced building material according to any one of [1] to [3], wherein the thermally expandable refractory material includes at least a reactive curable resin component, a thermally expandable component, and an inorganic filler. It is.

One of the present invention is
[5] The reaction curable resin component contained in the thermally expandable refractory material is urethane resin foam, isocyanurate resin foam, epoxy resin foam, phenol resin foam, urea resin foam, unsaturated polyester resin foam, alkyd resin foam, The fireproof reinforcing building member according to any one of the above [1] to [4], which is at least one selected from the group consisting of a melamine resin foam, a diallyl phthalate resin foam, and a silicone resin foam.

One of the present invention is
[6] Any of the above-mentioned [1] to [5], wherein the thermal expansion component contained in the thermally expandable refractory material includes at least one of thermally expandable graphite and a molded product pulverized product of the thermally expandable resin composition. The fireproof reinforcement building member as described in 1. is provided.

One of the present invention is
[7] The fire-resistant reinforced building material according to any one of [1] to [6], wherein the thermally expandable refractory material includes a phosphorus compound.

One of the present invention is
[8] The fireproof reinforced building member according to any one of [1] to [7], wherein the inorganic filler contained in the thermally expandable refractory material contains calcium carbonate.

One of the present invention is
[9] The thermally expandable refractory material is
Injected in contact with at least one of the inner surface of the outermost cavity among the cavities inside the frame member and the inner surface of the outermost space among the spaces formed between the plate members, [1 ]-[8] The fireproof reinforcement building member in any one is provided.

One of the present invention is
[10] The fireproof reinforced building member according to any one of [1] to [9], wherein the building member is at least one of a sash and a door.

One of the present invention is
[11] The fireproof reinforcing building member according to [10], wherein the sash or the door is made of at least one selected from the group consisting of a synthetic resin material, a metal material, a wood material, and an inorganic material. is there.

The present invention also provides
[12] A fireproof reinforcement method for a building member installed in an opening of a structure,
The building member has at least a frame material in which a cavity is formed along the longitudinal direction, and a plate material having fire resistance,
The plate material having the fire resistance is supported by the frame material,
Opening the hole reaching the cavity in the frame member;
Injecting a thermally expandable refractory material having a viscosity at 25 ° C. in the range of 1000 to 100,000 mPa · s from the hole reaching the cavity into the cavity inside the frame member ;
Reacting in the internal cavity of the frame material to lose the fluidity of the thermally expandable refractory material;
A fireproof reinforcement method for a building member, characterized by comprising at least

One of the present invention is
[ 13 ] The building member includes two or more plate members,
Injecting the thermally expandable refractory material into a space formed between the plate members facing each other;
Reacting the thermally expandable refractory material within the space to lose the fluidity of the thermally expandable refractory material;
The fireproof reinforcement method for a building member according to the above [ 12 ] is provided.

One of the present invention is
[ 14 ] The fire-resistant reinforcing method for building members according to [12] or [13] above, wherein the thermally expandable refractory material includes at least a reactive curable resin component, a thermally expandable component, and an inorganic filler. is there.

One of the present invention is
[15] The reaction curable resin component contained in the thermally expandable refractory material is urethane resin foam, isocyanurate resin foam, epoxy resin foam, phenol resin foam, urea resin foam, unsaturated polyester resin foam, alkyd resin foam, The fireproof reinforcement method for a building member according to any one of the above [12] to [ 14 ], which is at least one selected from the group consisting of melamine resin foam, diallyl phthalate resin foam, and silicone resin foam. .

The fireproof reinforced building material according to the present invention is obtained by injecting a thermally expandable fireproof material into the building member.
When it is found that the fire resistance of a building member already installed in the opening of a structure such as a house is low, the building member is removed from the opening, and then a thermally expandable fire-resistant member is inserted therein. There is a need to. As described above, the conventional building member takes time and labor for fireproof reinforcement.
On the other hand, since the fireproof reinforcement building member of this invention is obtained by inject | pouring a thermally expansible fireproof material into the inside of a building member, it is excellent in productivity per unit time.

  Moreover, the heat-expandable refractory material used in the present invention has a fluidity in which the viscosity at 25 ° C. before being injected into the building member is in the range of 1000 to 100,000 mPa · s. Due to this fluidity, the thermally expandable refractory material can be easily injected into the building member without depending on the shape and size of the building member. For this reason, the fireproof reinforcement building member of this invention can be obtained easily.

Moreover, since the heat-expandable refractory material used in the present invention loses fluidity inside the building member, the heat-expandable refractory material can be prevented from leaking from the inside of the building member to the outside.
Furthermore, it is possible to prevent the thermal expansion component contained in the thermally expandable refractory material from being unevenly distributed within the building member. Thereby, the fireproof reinforcement building member of this invention can exhibit the stable fireproof performance, without depending on the shape of the said building member, a magnitude | size, etc.

Moreover, when the fireproof reinforcement building member which concerns on this invention is exposed to flames, such as a fire, the thermally expansible fireproof material contained in the said fireproof reinforcement building member expands, and forms a thermal expansion residue.
Since this thermal expansion residue serves as a heat insulating layer, it is possible to delay the transfer of heat such as fire flames from the side where the fire is generated to the side where the fire is not generated through the fireproof reinforcing building member. .

  In addition, even if a part of the frame material or plate material included in the fireproof reinforcement building member is deformed, melted, or burnt out due to heat from a fire or the like and a gap or the like is generated in the fireproof reinforcement building member, the internal thermally expandable fireproof material Expands to form a thermal expansion residue. Since this thermal expansion residue closes the gap generated in the fireproof reinforcing building member, it is possible to prevent the spread of fire in a structure such as a house.

  In addition, when a foamed material such as urethane resin foam is used as the reaction curable resin component of the thermally expandable refractory material used in the present invention, the heat expandable refractory material injected into the interior of the building member is used. Bubbles can be included. Thereby, the fireproof reinforcement building member excellent in heat insulation can be obtained.

Moreover, since the fireproof reinforcement method which concerns on this invention can be implemented by inject | pouring a thermally expansible fireproof material into the inside of the said building member, it is excellent in workability | operativity.
Furthermore, according to the fireproof reinforcing method of the present invention, the fireproofness of the building member can be easily increased without depending on the shape, size, etc. of the building member.

It is a model front view for illustrating the 1st fireproof reinforcement building member which concerns on this invention. It is principal part sectional drawing in alignment with the AA of FIG. 1 before inject | pouring a thermally expansible refractory material. It is principal part sectional drawing in alignment with the AA of FIG. 1 after inject | pouring a thermally expansible refractory material. 1 is a schematic front view illustrating a first embodiment according to the invention. It is a model front view for illustrating the 2nd fireproof reinforcement building member which concerns on this invention. It is principal part sectional drawing in alignment with the AA of FIG. It is a model partial front view which illustrates 2nd embodiment which concerns on this invention. It is a model front view for demonstrating the structure of the fireproof reinforcement building member which concerns on Example 1 of this invention. FIG. 9 is a cross-sectional view of an essential part taken along the line AA of FIG. FIG. 9 is a cross-sectional view of a main part taken along line AA of FIG. FIG. 9 is a cross-sectional view of a main part taken along line AA of FIG.

The present invention relates to a fireproof reinforced building member. First, a building member used in the present invention will be described.
As a building member used in the present invention, for example, a structure such as a detached house, an apartment house, a high-rise house, a high-rise building, a commercial facility, a public facility, a ship such as a passenger ship, a transport ship, a ferry Hereinafter, it is referred to as “a structure such as a house”).
For example, sashes such as open / close windows and fixed windows, doors, sliding doors, shutters, doors such as revolving doors, and the like are exemplified, but the present invention is not limited thereto.

  The fireproof reinforcing building member according to the present invention is formed by injecting a heat-expandable fireproof material into the building member. The first embodiment according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic front view for illustrating a first fireproof reinforcing building member according to the present invention. 2 is a cross-sectional view of the main part taken along the line AA of FIG. 1 before injecting the thermally expandable refractory material, and FIG. 3 is a cross sectional view of FIG. It is principal part sectional drawing which follows a line.
As an example of the fireproof reinforcing building member, a sliding sash is illustrated in FIGS.

1 to 3, the fireproof reinforcing building member 1 is fixed to a rectangular opening formed in a structure such as a house, and has an opening frame 10 as an outer peripheral frame member, and a horizontal inside thereof. It is provided with two plate members 20, 20 that are movable in the direction of the difference.
By injecting a thermally expandable refractory material into the inside of the opening frame 10 or the like, the fireproof reinforced building member 1 according to the first embodiment is obtained.

The opening frame body 10 is composed of left and right vertical frame bodies 11 and 12 and upper and lower horizontal frame bodies 13 and 14, and the inside surrounded by the frame members 11 to 14 is an opening. The two plate members 20 and 20 close the opening and have substantially the same structure. The plate members 20 and 20 are formed in a rectangular shape by the vertical frames 21 and 22 as the left and right frame members and the horizontal frame members 23 and 24 as the upper and lower frame members, and the vertical frame on the center side overlaps the front and rear. The gap between the front and rear plates 20 and 20 can be closed.
The opening frame 10 and the plate members 20 and 20 are configured by combining aluminum metals including frame bodies 11 to 14 as vertical and horizontal frame members and casings 21 to 24 as vertical and horizontal frame members.

Examples of materials used for the opening frame 10 and the plate materials 20 and 20 include synthetic resin materials, metal materials, inorganic materials, and wood.
Examples of the synthetic resin include chlorine-containing resins such as polyvinyl chloride, polyolefin resins such as polyethylene and polypropylene, and polyester resins such as polyethylene terephthalate and polybutylene terephthalate.
Examples of the metal material include an aluminum material, a stainless material, a steel material, and an alloy material.
Examples of the inorganic material include glass, gypsum, ceramic, cement, calcium silicate, pearlite, and the like.
Examples of the wood include natural wood, molded wood obtained by curing a wood piece, a wood sheet, and the like with a resin.

  The said raw material can use 1 type, or 2 or more types.

As described above, the fireproof reinforcing building member 11 is supported by the opening frame 10 so that the two plates 20 and 20 are slidable.
A window glass 25 made of iron netted glass located on the inner peripheral side is supported by vertical and horizontal casings 21 to 24 which are frame members of the plate member 20.
The window glass 25 constitutes a fire-resistant plate material, and constitutes a partition surface that partitions the outdoor and indoor areas of the fire-proof reinforcing building member 1.
In addition, as a partition surface, not only a translucent window glass but what has light-shielding properties, such as a metal plate material and a calcium-silicate board, may be sufficient.

  The structure of the fireproof reinforcing building member 1 of the first embodiment is not particularly limited, and the frame used in the present invention is the upper and lower frames 11 to 14 and the casings 21 to 21 constituting the sash. Each of 24 is formed of an aluminum metal molding material and has a plurality of cavities penetrating along the longitudinal direction.

  As long as the cross-sectional shape orthogonal to the longitudinal direction has one or a plurality of cavities, any known form may be used.

In addition, when using a synthetic resin such as polyvinyl chloride resin instead of aluminum metal or together with aluminum metal as each frame and each frame which are sash frame materials, it is hard chloride from the viewpoint of improving fire resistance. It is preferred to use vinyl.
Each frame and each housing can be formed by extrusion molding, injection molding or the like using a synthetic resin such as hard vinyl chloride.

First, the vertical frame bodies 11 and 12 constituting the opening frame body 10 will be described in detail.
The vertical frame bodies 11 and 12 are formed by cutting a long material obtained by casting aluminum metal, and have a cavity penetrating along the longitudinal direction.
The vertical frame bodies 11 and 12 have two large rectangular cavities 11a and 12a having two cross-sectional shapes, and two small cavities 11b and 12b extending from the ends of the inner and outer wall surfaces forming the cavity to the opening side. And.
Moreover, although not shown in figure, the horizontal frame bodies 13 and 14 which comprise the opening frame body 10 are similarly formed with a plurality of cavities penetrating in the longitudinal direction.

  The left and right vertical casings 21 and 22 that are the frame material of the plate material 20 are formed by cutting a long material that is similarly formed by casting aluminum metal, and penetrates in the longitudinal direction in the cross section. Six cavities 21a and 22a are provided. Also, the horizontal casings 23 and 24 that are the frame members of the plate member 20 are also formed with a plurality of cavities penetrating in the longitudinal direction, 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 step portion of the vertical casings 21 and 22 and is fixed by a rubber seal material or a sealing agent 26.

The fireproof and reinforced building member 1 exemplified in the first embodiment includes cavities of aluminum metal frames 11 to 14 constituting the opening frame body 10, and aluminum metal housings 21 serving as a frame material of the plate member 20. Thermally expandable refractory material 15 is injected into ˜24 cavities.
Specifically, after the thermally expandable refractory material 15 is injected into the large cavities 11a and 12a of the vertical frame 11, the thermally expandable refractory material 15 loses fluidity inside the cavities 11a and 12a. .

  Although not shown, after the thermally expandable refractory material 15 is injected into the cavities penetrating in the longitudinal direction in the horizontal frames 13 and 14 as well, the interiors of the cavities of the horizontal frames 13 and 14 are the same. The heat-expandable refractory material 15 has lost its fluidity.

  After the thermally expandable refractory material 15 is injected also into the cavities 21a and 22a of the vertical casings 21 and 22 of the plate member 20, the thermally expandable refractory material 15 loses fluidity inside the cavities 21a and 22a.

  Then, after the thermally expandable refractory material 15 is injected into the upper and lower horizontal bodies 23, 24 of the plate member 20 into a cavity penetrating in the longitudinal direction (not shown), The heat-expandable refractory material 15 has lost its fluidity.

As described above, the thermally expandable refractory material 15 is injected into the cavity of the opening frame 10 and the cavities of the plate members 20 and 20 in the direction along the surface of the window glass 25 and is in contact with the inner wall surface of the cavity to be fluid. Have lost.
These thermally expandable refractory materials 15 are arranged in a parallel state along the surface of the window glass 25 constituting the fire-resistant plate, and form a fire-resistant surface together with the window glass 25. The refractory surface thus formed fills almost the entire surface along the window glass except for each frame in the direction perpendicular to the glass surface and the thick portion of each brazing material.

  In the case where there are a plurality of cavities inside the frame material used in the present invention, the first step is to inject a thermally expandable refractory material into the cavities in contact with the inside of the cavities that are perpendicular to the refractory plate material in the vertical direction. It is preferable from a viewpoint of improving the fire resistance of the fireproof reinforcement building member which concerns on this embodiment.

  When the fireproof reinforcing building member 1 is viewed from the outdoor side or the front side of the indoor side, that is, the direction perpendicular to the direction along the glass surface, the vertical casings 21 and 22 and the side walls surrounding the outer peripheries of the central window glasses 25 and 25 are seen. A thermally expandable refractory material 15 is located in front of the cavities of the bodies 23 and 24. The thermally expandable refractory material 15 is also located in front of the cavities of the vertical frames 11 and 12 and the horizontal frames 13 and 14 of the opening frame 10 that supports the plate members 20 and 20, and all the thermally expandable refractory materials. 15 is injected along the surface of the window glass 25 to form a refractory surface.

  The composition of the thermally expandable refractory material 15 will be described later.

  The heat-expandable refractory material 15 used in the first embodiment is a material that expands in volume and forms a thermal expansion residue when exposed to a high temperature during a fire or the like. And the thermal expansion residue of the heat-expandable refractory material 15 is buried in the portion where the aluminum metal such as the brazing materials 21 to 24 is heated and deformed and dropped, thereby preventing the penetration of the flame.

Next, a method for fireproofing a building member by injecting the thermally expandable fireproof material 15 into the cavity will be described.
FIG. 4 is a schematic front view illustrating the first embodiment according to the invention.
First, a plurality of holes 30 are formed in the upper portions of the vertical frame bodies 11 and 12 constituting the opening frame body 10 using an opening means such as an electric drill.

Similarly, a hole 31 is formed in the horizontal frame 13 constituting the opening frame 10.
Next, a thermally expandable refractory material is injected from the holes 30 and 31. Since the plurality of holes 30 and 31 are formed in the vertical frame bodies 11 and 12 and the horizontal frame body 13 that constitute the opening frame body 10, respectively, when the thermally expandable refractory material 15 is injected, the opening frame body 10. The air inside the vertical frame bodies 11 and 12 and the horizontal frame body 13 is discharged to the outside through a hole different from the hole into which the holes are injected. Thereby, the said heat-expandable refractory material can be smoothly inject | poured into the cavity inside the vertical frame bodies 11 and 12 which comprise the opening frame body 10, and the cavity inside the horizontal frame body 13. FIG.

In FIG. 4, each hole is provided on the front surface of the fireproof reinforcing building member 1 according to the first embodiment, but is appropriately provided on the side surface, back surface, top surface, and the like of the fireproof reinforcing building member 1 according to the first embodiment. be able to.
When injecting the thermally expandable refractory material 15 into the cavity inside the opening frame 10 from the front, in addition to the holes provided on the front, the holes provided on the side of the opening frame 10 and the back Air inside the opening frame 10 can be discharged from at least one of the holes provided and the holes provided on the upper surface.
A pipe is inserted into a hole provided in at least one of the front, side, back and top surfaces of the opening frame 10, and the inside of the opening frame 10 is thermally expanded while decompressing the inside of the opening frame 10. The refractory material 15 can be injected.
Further, the thermal expansibility is provided by a pressure injection means provided with a piston, a cylinder and the like into the inside of the opening frame body 10 from a hole provided in at least one of the front surface, side surface, back surface and top surface of the opening frame body 10. It is also possible to inject the refractory material 15 without applying pressure.
For convenience of explanation, in FIG. 4, each hole is provided on the front surface of the fireproof reinforcing building member 1 according to the first embodiment. It is preferable to provide a hole in.

  The positions, shapes, sizes, etc. of the plurality of holes 30, 31 formed in the vertical frame bodies 11, 12 and the horizontal frame body 13 constituting the opening frame body 10 take into account the efficiency of injecting the thermally expandable refractory material 15. And can be selected as appropriate.

  Further, when the cavity inside the horizontal frame body 14 constituting the opening frame body 10 is not connected to the cavity inside the vertical frame bodies 11, 12, the horizontal frame body 14 constituting the opening frame body 10 is appropriately arranged. It is also possible to make a hole using an opening means such as an electric drill and inject the thermally expandable refractory material 15 from this hole.

  Similarly, a plurality of holes 32 and 33 are formed in the left and right vertical casings 21 and 22 and the horizontal casings 23 and 24, which are the frames of the plate member 20, using an opening means such as an electric drill. From this hole, the thermally expandable refractory material can be injected into the cavities inside the left and right vertical casings 21 and 22 and the cavities inside the horizontal casings 23 and 24.

  You may install obturators, such as a resin cap and a metal screw, in the said holes 30-33 as needed after construction work.

  The vertical frame bodies 11 and 12 and the horizontal frame bodies 13 and 14 constituting the opening frame body 10, and the left and right vertical frame bodies 21 and 22 and the horizontal frame bodies 23 and 24 that form the frame body of the plate member 20 The heat-expandable resin refractory material 15 injected therein undergoes a curing reaction with time, and loses fluidity inside the cavity.

  For this reason, the thermally expansible resin refractory material 15 injected into the respective cavities becomes the frame bodies of the vertical frame bodies 11 and 12 and the horizontal frame bodies 13 and 14 constituting the opening frame body 10 and the plate member 20. It can be kept inside without leaking from the left and right vertical casings 21 and 22 and the horizontal casings 23 and 24.

  Moreover, the heat insulation of the fire-resistant reinforced building member 1 which concerns on 1st embodiment can be improved by using the foam containing a bubble as the said thermally expansible refractory material 15. FIG.

The fireproof reinforcing building member 1 according to the first embodiment is obtained by injecting a thermally expandable fireproof material into an internal cavity of the opening frame 10 or the like.
For this reason, since fireproof reinforcement can be performed without removing the two plate members 20, 20, etc. from the opening frame 10, fire resistance can be easily increased.

Next, a second embodiment of the present invention will be described.
FIG. 5 is a schematic front view for illustrating a second fireproof reinforcing building member according to the present invention. FIG. 6 is a cross-sectional view of a main part taken along line AA in FIG.
As an example of the fireproof reinforcing building member 1, an opening / closing door is illustrated in FIGS. 5 and 6.

5 and 6, a fireproof reinforced building member 100 is fixed to a rectangular opening formed at the entrance of a structure such as a house by a movable fixing means such as a hinge, and can be opened and closed. And two plate members 60 and 60 that cover the opening frame 50 from both sides.
By injecting a heat-expandable refractory material into the space formed between the two plate members 60, 60 facing each other, the fire-proof reinforced building member 100 according to the second embodiment is obtained.

The opening frame 50 includes left and right vertical frames 51 and 52 and upper and lower horizontal frames 53 and 54. The two plate members 60, 60 close the opening frame 50.
In addition, a heat insulating material 70 made of inorganic fibers such as glass wool and an aluminum foil covering the inorganic fibers is installed as a heat insulating material between the two plate members 60 and 60.

The fireproof reinforcing building member 100 is configured by combining wooden frame members 11 to 14 as vertical and horizontal frame members and wooden plate members 60 and 60.
The fireproof reinforcing building member 100 includes a door knob 80 as an opening / closing means. The structure of the opening / closing means is well known, and a commercially available one can be appropriately selected and used.
As in the case of the first embodiment, the material constituting the fireproof reinforcing building member 100 according to the second embodiment can be appropriately selected according to the purpose and application.

The fireproof reinforcing building member 100 exemplified in the second embodiment includes the heat insulating material 70 and the wooden plate material 60 in the space formed between the wooden plate materials 60 and 60 constituting the opening frame 50. A thermally expandable refractory material 15 is injected into a space formed between the two.
After the heat-expandable refractory material 15 is injected, the heat-expandable refractory material 15 loses fluidity inside the space 80.

  The heat-expandable refractory material 15 used in the second embodiment is a material that forms a thermal expansion residue by volume expansion when exposed to a high temperature such as in a fire, and constitutes the opening frame 50 in the event of a fire. When the left and right vertical frame bodies 51 and 52 of the opening frame body 50 and the upper and lower horizontal frame bodies 53 and 54 are heated, the left and right vertical frame bodies 51 of the wooden plate material 60 and the opening frame body 50 are heated. , 52, the carbonization of the contact surface between the upper and lower horizontal frame bodies 53, 54 and the thermal expansion residue due to the thermally expandable refractory material 15 can be suppressed, and fire resistance performance can be ensured.

Next, a method for fireproofing a building member by injecting the thermally expandable refractory material 15 into the space will be described.
FIG. 7 is a schematic front view illustrating the second embodiment according to the invention.
First, a plurality of holes 30 are opened using an opening means such as an electric drill in the upper part of the wooden plate material 60.

Next, a thermally expandable refractory material is injected from the hole 30. Since a plurality of holes 30 are formed in the wooden plate member 60, when the thermally expandable refractory material is injected, the air inside the opening frame member 50 and the wooden plate member 60 constituting the opening frame member 50 is It is discharged to the outside through a hole other than the hole being injected. Thereby, the said thermally expansible fireproof material can be inject | poured into the space inside the wooden board | plate material 60 and the heat insulating material 70 which comprise the fire-proof reinforcement building member 100 smoothly.
The position, shape, size, and the like of the plurality of holes 30 formed in the wooden plate material 60 can be appropriately selected and determined in consideration of the efficiency of injecting the thermally expandable refractory material.
For convenience of explanation, in FIG. 7, each hole is provided on the front surface of the fireproof reinforcing building member 100 according to the second embodiment. It is preferable to provide a hole in.

  After the construction work, an obturator such as a resin cap or a metal screw may be installed in the hole 30 as necessary.

The heat-expandable resin refractory material injected into the space of the wooden plate member 60 and the heat insulating material 70 undergoes a curing reaction with time and loses fluidity inside the space.
For this reason, the heat-expandable resin refractory material injected into the space can be kept inside without leaking from the opening frame member 50 and the wooden plate member 60.

  Moreover, the heat insulation of the fire-proof reinforcement building member 100 which concerns on 1st embodiment can be improved by using the foam containing a bubble as said heat-expandable fireproof material.

The fireproof reinforcing building member 2 according to the second embodiment is also obtained by injecting a thermally expansive fireproof material into the internal space of the wooden plate materials 60, 60 and the like.
For this reason, since fireproof reinforcement can be performed without removing the open / close door from the entrance / exit of a structure such as a house, fire resistance can be easily increased.

  Next, the thermally expandable refractory material used in the present invention will be described.

  Specific examples of the heat-expandable refractory material include those made of a resin composition containing a reactive curable resin component, a heat-expandable component, an inorganic filler, and the like.

Of the components of the thermally expandable refractory material, the reaction curable resin component will be described first.
As the reactive curable resin component, for example, the viscosity increases as the reaction of the constituent components contained in the reactive curable resin component progresses over time, and the fluidity is initially fluid but the fluidity over time. There is no particular limitation as long as it loses.
Specific examples of the reaction curable resin component include urethane resin, isocyanurate resin, epoxy resin, phenol resin, urea resin, unsaturated polyester resin, alkyd resin, melamine resin, diallyl phthalate resin, A silicone resin etc. are mentioned.

As said urethane resin, what contains the polyisocyanate compound as a main ingredient, the polyol compound as a hardening | curing agent, a catalyst, etc. is mentioned, for example.
Examples of the polyisocyanate compound that is the main component of the urethane resin include aromatic polyisocyanates, alicyclic polyisocyanates, and aliphatic polyisocyanates.

Examples of the aromatic polyisocyanate include phenylene diisocyanate, tolylene diisocyanate, xylylene diisocyanate, diphenylmethane diisocyanate, diphenylmethane diisocyanate, dimethyldiphenylmethane diisocyanate, triphenylmethane triisocyanate, naphthalene diisocyanate, polymethylene polyphenyl polyisocyanate, and the like. .
Examples of the alicyclic polyisocyanate include cyclohexylene diisocyanate, methylcyclohexylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, dimethyldisicyclohexylmethane diisocyanate, and the like.

Examples of the aliphatic polyisocyanate include methylene diisocyanate, ethylene diisocyanate, propylene diisocyanate, tetramethylene diisocyanate, and hexamethylene diisocyanate.
The said polyisocyanate compound can use 1 type, or 2 or more types.
The main component of the urethane resin is preferably diphenylmethane diisocyanate for reasons such as ease of use and availability.

  Examples of the polyol compound that is a curing agent for the urethane resin include aromatic polyols, alicyclic polyols, aliphatic polyols, polyester-based polyols, and polymer polyols.

Examples of the aromatic polyol include bisphenol A, bisphenol F, phenol novolak, and cresol novolak.
Examples of the alicyclic polyol include cyclohexanediol, methylcyclohexanediol, isophoronediol, dicyclohexylmethanediol, dimethyldisicyclohexylmethanediol, and the like.
Examples of the aliphatic polyol include ethylene glycol, propylene glycol, butanediol, pentanediol, and hexanediol.
Examples of the polyester-based polyol include a polymer obtained by dehydration condensation of a polybasic acid and a polyhydric alcohol, and a polymer obtained by ring-opening polymerization of a lactone such as ε-caprolactone and α-methyl-ε-caprolactone. Examples thereof include condensates, and condensates of hydroxycarboxylic acids with the above polyhydric alcohols.

Specific examples of the polybasic acid include adipic acid, azelaic acid, sebacic acid, terephthalic acid, isophthalic acid, and succinic acid.
Specific examples of the polyhydric alcohol include bisphenol A, ethylene glycol, 1,2-propylene glycol, 1,4-butanediol, diethylene glycol, 1,6-hexane glycol, and neopentyl glycol. It is done.
Specific examples of the hydroxycarboxylic acid include castor oil, a reaction product of castor oil and ethylene glycol, and the like.

  Examples of the polymer polyol include a polymer obtained by graft polymerization of an ethylenically unsaturated compound such as acrylonitrile, styrene, methyl acrylate, and methacrylate on the aromatic polyol, alicyclic polyol, aliphatic polyol, polyester polyol, and the like. Coalesced, polybutadiene polyol, or hydrogenated products thereof.

The ratio of the active hydrogen group (OH) in the polyol compound and the active isocyanate group (NCO) in the polyisocyanate compound (NCO / OH) is determined by combining the polyisocyanate compound as the main component of the urethane resin and the polyol compound as the curing agent. It is preferable to mix so that it may become 1.2-15 in equivalent ratio. More preferably, it is the range of 1.2-12.
If the equivalent ratio is 1.2 or more, the viscosity of the urethane resin can be prevented from becoming too high, and if it is 15 or less, good adhesive strength can be maintained.

  Examples of the urethane resin catalyst include triethylamine, N-methylmorpholine bis (2-dimethylaminoethyl) ether, N, N, N ′, N ″, N ″ -pentamethyldiethylenetriamine, N, N, N′— Amino such as trimethylaminoethyl-ethanolamine, bis (2-dimethylaminoethyl) ether, N-methyl, N′-dimethylaminoethylpiperazine, imidazole compounds in which the secondary amine functional group in the imidazole ring is substituted with a cyanoethyl group And system catalysts.

  Next, as the isocyanurate resin, for example, using the polyurethane resin described above, the isocyanate group contained in the polyisocyanate compound which is the main component of the polyurethane resin was reacted to trimerize, thereby promoting the generation of the isocyanurate ring. The thing etc. can be mentioned.

In order to promote the formation of an isocyanurate ring, for example, as a catalyst, tris (dimethylaminomethyl) phenol, 2,4-bis (dimethylaminomethyl) phenol, 2,4,6-tris (dialkylaminoalkyl) hexahydro Aromatic compounds such as -S-triazine, carboxylic acid alkali metal salts such as potassium acetate, potassium 2-ethylhexanoate and potassium octylate, quaternary ammonium salts of carboxylic acids, and the like may be used.
The main component and curing agent of the isocyanurate resin are the same as those of the previous polyurethane resin.

  Next, examples of the epoxy resin include a resin obtained by reacting a monomer having an epoxy group as a main component with a curing agent.

  Examples of the monomer having an epoxy group include, as a bifunctional glycidyl ether type, a polyethylene glycol type, a polypropylene glycol type, a neopentyl glycol type, a 1,6-hexanediol type, a trimethylolpropane type, and a propylene oxide-bisphenol A. And monomers such as hydrogenated bisphenol A type, bisphenol A type, and bisphenol F type.

  Examples of the glycidyl ester type include monomers such as hexahydrophthalic anhydride type, tetrahydrophthalic anhydride type, dimer acid type, and p-oxybenzoic acid type.

  Further, examples of the polyfunctional glycidyl ether type include monomers such as phenol novolac type, orthocresol type, DPP novolac type, dicyclopentadiene, and phenol type.

  These can use 1 type, or 2 or more types.

Examples of the curing agent include a polyaddition type curing agent and a catalyst type curing agent.
Examples of the polyaddition type curing agent include polyamines, acid anhydrides, polyphenols, polymercaptans, and the like.
Examples of the catalyst-type curing agent include tertiary amines, imidazoles, and Lewis acid complexes.
The method for curing these epoxy resins is not particularly limited, and can be performed by a known method.

  In addition, what adjusted the melt viscosity of the said resin component, a softness | flexibility, adhesiveness, etc. can use what mixed 2 or more types of resin components.

Next, as said phenol resin, a resol type phenol resin composition etc. are mentioned, for example.
The resol type phenol resin composition includes, for example, a resol type phenol resin as a main agent, a curing agent, and the like.

As the main component of the phenol resin, for example, phenols, cresol, xylenol, paraalkylphenol, paraphenylphenol, resorcin and other phenols and modified products thereof, and aldehydes such as formaldehyde, paraformaldehyde, furfural, and acetaldehyde are used as catalysts. Although what is obtained by making it react in presence of alkalis, such as quantity of sodium hydroxide, potassium hydroxide, calcium hydroxide, is mention | raise | lifted, it is not limited to this.
The mixing ratio of phenols and aldehydes is not particularly limited, but is usually in the range of 1.0: 1.5 to 1.0: 3.0 in terms of molar ratio. The mixing ratio is preferably in the range of 1.0: 1.8 to 1.0: 2.5.

  Examples of the phenol resin curing agent include inorganic acids such as sulfuric acid and phosphoric acid, and organic acids such as benzenesulfonic acid, ethylbenzenesulfonic acid, paratoluenesulfonic acid, xylenesulfonic acid, naphtholsulfonic acid, and phenolsulfonic acid. It is done.

Next, examples of the urea resin include urea as a main agent, formaldehyde as a curing agent, a basic compound as a catalyst, and a composition containing an acidic compound.
The urea and formaldehyde form a urea resin by a polymerization reaction.

Next, as unsaturated polyester resin, the composition etc. which contain the unsaturated polybasic acid as a main ingredient, the polyol compound as a hardening | curing agent, a catalyst, etc. are mentioned.
Specific examples of the main component of the unsaturated polyester resin include maleic anhydride and fumaric acid.

Specific examples of the curing agent for the unsaturated polyester resin include a polyol compound used for the urethane resin described above.
The unsaturated polyester resin may be used in combination with a saturated polybasic acid such as phthalic anhydride or isophthalic acid, if necessary.

Further, a crosslinking vinyl monomer such as styrene, vinyl toluene, methyl methacrylate or the like which is polymerized with the main component of the unsaturated polyester resin can be added.
Specific examples of the unsaturated polyester resin catalyst include t-butyl peroxybenzoate, t-butyl peroxy-2-ethylhexanoate, t-butyl peroxy octoate, and t-butyl peroxy. Examples thereof include organic peroxides such as isopropyl carbonate and 1,1-di-t-butylperoxy-3,3,5-trimethylcyclohexanone.

Next, as an alkyd resin, the composition containing the polybasic acid as a main ingredient, the polyol compound as a hardening | curing agent, fats and oils, etc. are mentioned, for example.
Specific examples of the main component of the alkyd resin include maleic anhydride, phthalic anhydride, and adipic acid.

Specific examples of the curing agent for the alkyd resin include a polyol compound used for the urethane resin described above.
Examples of the fats and oils include soybean oil, coconut oil, and linseed oil.

Next, as a melamine resin, the composition containing the melamine as a main ingredient, formaldehyde as a hardening | curing agent, etc. are mentioned, for example.
A benzoguanamine etc. can also be added to the said composition as needed.

Next, examples of the diallyl phthalate resin include a composition containing a polybasic acid such as phthalic anhydride as a main agent, allyl alcohol as a curing agent, and a crosslinking agent.
Examples of the crosslinking agent include styrene and vinyl acetate.

  Next, as the silicone resin, for example, a composition containing a platinum compound such as chloroplatinic acid as a curing agent, etc. Can be mentioned.

Specific examples of the dialkylsilyl dichloride include dimethylsilyl dichloride, diethylsilyl dichloride, dipropylsilyl dichloride, and the like.
Specific examples of the dialkylsilyldiol include dimethylsilyldiol, diethylsilyldiol, and dipropylsilyldiol.
Specific examples of the trialkylsilyl chloride include trimethylsilyl chloride, triethylsilyl chloride, tripropylsilyl chloride, and the like.
Specific examples of the trialkylsilyldiol include trimethylsilylol, triethylsilylol, tripropylsilylol, and the like.
The reaction inhibitor is bonded to the terminal of the polysiloxane main chain and plays a role in controlling the reaction and controlling the degree of polymerization of the polysiloxane main chain.

The reaction curable resin component used in the present invention is preferably a thermosetting resin in order to prevent melting easily even when exposed to heat such as a fire.
The reaction curable resin component used in the present invention is more preferably an epoxy resin, a urethane resin, a phenol resin or the like from the viewpoint of handleability.

  The reactive curable resin component used in the present invention can also be used after preliminary reaction between the main agent and the curing agent.

  The main component, curing agent, catalyst, and the like of the reactive curable resin component contained in the thermally expandable refractory material used in the present invention can be used alone or in combination of two or more.

  By using a foaming agent and a foam stabilizer in combination with the reaction curable resin component contained in the thermally expandable refractory material used in the present invention, the thermally expandable refractory material can be cured in a foamed state.

  Examples of the blowing agent include low-boiling hydrocarbons such as propane, butane, pentane, hexane, heptane, cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, dichloroethane, propyl chloride, isopropyl chloride, butyl chloride, and isobutyl. Organic physical foaming such as chlorinated aliphatic hydrocarbon compounds such as chloride, pentyl chloride, isopentyl chloride, fluorine compounds such as trichloromonofluoromethane and trichlorotrifluoroethane, ethers such as diisopropyl ether, or mixtures of these compounds Agents, inorganic physical foaming agents such as nitrogen gas, oxygen gas, argon gas and carbon dioxide gas, water and the like.

  Although the usage-amount of the foaming agent with respect to the said reaction curable resin component is suitably set with the said reaction curable resin component to be used, if an example is shown, for example with respect to 100 weight part of the said reaction curable resin components The range is usually from 1 to 20 parts by weight, and preferably from 5 to 10 parts by weight.

Examples of the foam stabilizer include organosilicon surfactants.
The amount of the foam stabilizer used with respect to the reactive curable resin component is appropriately set depending on the reactive curable resin component to be used. For example, with respect to 100 parts by weight of the resin component, 0 is used. A range of 0.01 to 5 parts by weight is preferable.

  One or two or more foaming agents and foam stabilizers can be used.

  The reaction curable resin component used in the present invention preferably has a foaming function in order to cure the thermally expanded refractory material in a foamed state. Specifically, a urethane resin foam, an isocyanurate resin foam, It is preferable to use one or more of epoxy resin foam, phenol resin foam, urea resin foam, unsaturated polyester resin foam, alkyd resin foam, melamine resin foam, diallyl phthalate resin foam, silicone resin foam and the like.

  By curing the thermally expanded refractory material in a foamed state, it is possible to provide a thermal insulation effect of bubbles to the cured thermally expanded refractory material, such as a door installed in an opening of a structure, a sash, etc. The heat insulating property of the building member into which the heat-expandable refractory material is injected can be improved.

Next, among the components of the thermal expansion refractory material, thermal expansion components will be described.
The thermal expansion component expands upon heating. Specific examples of the thermal expansion component include inorganic expansion components such as vermiculite, kaolin, mica, and thermally expandable graphite, and a thermally expandable resin composition. The molded product pulverized product can be listed.

  The heat-expandable graphite is a conventionally known substance, and powders such as natural scaly graphite, pyrolytic graphite, and quiche graphite are mixed with an inorganic acid such as concentrated sulfuric acid, nitric acid, and selenic acid, and concentrated nitric acid, perchloric acid, peroxygen, and the like. A graphite intercalation compound was produced by treatment with a strong oxidant such as chlorate, permanganate, dichromate, dichromate, hydrogen peroxide, etc., and the layered structure of carbon was maintained. It is a kind of crystalline compound as it is.

  The heat-expandable graphite obtained by acid treatment as described above is preferably 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 thermal expandable graphite preferably has a particle size in the range of 20 to 200 mesh.

  When the particle size is 20 mesh or more, the dispersibility is improved, so that kneading with a resin component or the like is facilitated. On the other hand, when the particle size is 200 mesh or less, since the degree of expansion of graphite is large, it becomes easy to obtain a sufficient fireproof heat insulating layer.

  Examples of commercially available neutralized thermally expandable graphite include “GRAFGUARD # 160”, “GRAFGUARD # 220” manufactured by UCAR CARBON, and “GREP-EG” manufactured by Tosoh Corporation.

Examples of the pulverized molded product of the heat-expandable resin composition include a product obtained by pulverizing a commercially available heat-expandable fireproof sheet.
Specific examples of the heat-expandable fireproof sheet used in the pulverized molded article include, for example, Fibro (registered trademark) manufactured by Sekisui Chemical Co., Ltd., resin components such as epoxy resin and rubber resin, and heat-expandable graphite Molded product of thermally expandable resin composition containing thermal expansion component, phosphorus compound, inorganic filler, etc.), Sumitomo 3M Fire Barrier (sheet material consisting of resin composition containing chloroprene rubber and verculite, expansion coefficient) : 3 times, thermal conductivity: 0.20 kcal / m · h · ° C., Mitsui Metal Paint Chemical Co., Ltd. medhi-cut (sheet material consisting of a resin composition containing polyurethane resin and thermally expandable graphite, expansion rate: 4 times) , Thermal conductivity: 0.21 kcal / m · h · ° C.) and the like.

Molded product of thermally expandable resin composition by a method such as finely cutting a commercially available heat-expandable fireproof sheet with a cutter, etc., or a method of grinding a commercially available heat-expandable fireproof sheet etc. through a grinding roll A pulverized product can be obtained.
The compact of the thermally expandable resin composition is preferably in the range of 5 to 20 mesh.

  When the particle size of the pulverized molded product of the heat-expandable resin composition is 5 mesh or more, dispersibility is improved, so that kneading with a resin component or the like is facilitated. On the other hand, if the particle size is 20 mesh or less, the expansion of graphite is large, so that a sufficient fire-resistant heat insulating layer can be easily obtained.

  Next, among the components of the above-mentioned thermally expandable refractory material, the inorganic filler will be described.

  The inorganic filler is not particularly limited. For example, silica, diatomaceous earth, alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, ferrites, calcium hydroxide, hydroxide Magnesium, aluminum hydroxide, basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, barium carbonate, dawsonite, hydrotalcite, calcium sulfate, barium sulfate, gypsum fiber, potassium salt of calcium silicate, vermiculite, kaolin, Mica, talc, clay, mica, montmorillonite, bentonite, activated clay, ceviolite, imogolite, sericite, glass fiber, glass beads, silica-based balun, aluminum nitride, boron nitride, silicon nitride, carbon black , Graphite, carbon fiber, carbon balun, charcoal powder, various metal powders, potassium titanate, magnesium sulfate, lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powders, slag Examples thereof include fibers, fly ash, inorganic phosphorus compounds, silica alumina fibers, alumina fibers, silica fibers, and zirconia fibers.

  These can use 1 type, or 2 or more types.

  The said inorganic filler plays the role of an aggregate and contributes to the improvement of the expansion | swelling heat insulation layer produced | generated after a heating, and the increase in a heat capacity.

  For this reason, a calcium carbonate, a metal carbonate represented by zinc carbonate, an aluminum hydroxide that gives an endothermic effect during heating in addition to an aggregate role, and a water-containing inorganic material represented by magnesium hydroxide are preferred. An earth metal and a metal carbonate of the periodic table IIb or a mixture of these with the water-containing inorganic substance are preferable.

Moreover, a phosphorus compound can also be added as a flame retardant to the thermally expandable refractory material used in the present invention.
The phosphorus compound is used to improve flame retardancy or to exhibit a thermal expansion function in combination with nitrogen compounds, alcohols, and the like.

The phosphorus compound is not particularly limited, and examples thereof include red phosphorus,
Various phosphate esters such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate,
Metal phosphates such as sodium phosphate, potassium phosphate, magnesium phosphate; ammonium polyphosphates,
The compound etc. which are represented by following Chemical formula 1 are mentioned.

  These phosphorus compounds can be used alone or in combination of two or more.

Among these, from the viewpoint of fire resistance, red phosphorus, a compound represented by the following chemical formula, and ammonium polyphosphates are preferable, and ammonium polyphosphates are more preferable in terms of performance, safety, cost, and the like.

In the above chemical 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.

R ² 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 carbon. The aryloxy group of Formula 6-16 is represented.

  Examples of the compound represented by the chemical formula include 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, phenylphosphinic 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 ammonium polyphosphates are not particularly limited, and examples include ammonium polyphosphate and melamine-modified ammonium polyphosphate. Ammonium polyphosphate is preferred from the viewpoint of flame retardancy, safety, cost, and handleability. Used.

  Examples of commercially available products include “trade name: EXOLIT AP422” and “trade name: EXOLIT AP462” manufactured by Clariant.

  It is considered that the phosphorus compound reacts with metal carbonates such as calcium carbonate and zinc carbonate to promote the expansion of the metal carbonate. In particular, when ammonium polyphosphate is used as the phosphorus compound, a high expansion effect is obtained. can get.

  It also acts as an effective aggregate and forms a highly shape-retaining residue after combustion.

  The nitrogen compound is not particularly limited, but is preferably a melamine compound or the like. The alcohols are not particularly limited, but polyhydric alcohols such as pentaerythritol are preferable.

  When the inorganic filler used in the present invention is granular, the particle size is preferably in the range of 0.5 to 200 μm, more preferably in the range of 1 to 50 μm.

When the amount of the inorganic filler added is small, the dispersibility greatly affects the performance, so a small particle size is preferable. However, when the particle size is 0.5 μm or more, secondary aggregation can be prevented and the dispersibility is good. It becomes.

  In addition, when the amount of inorganic filler added is large, the viscosity of the resin composition increases and moldability decreases as high filling proceeds, but the viscosity of the resin composition is decreased by increasing the particle size. From the point of being able to do, the thing with a large particle size is preferable among the said range.

  In addition, when a particle size is 200 micrometers or less, it can suppress that the surface property of a molded object and the mechanical physical property of a resin composition fall.

  Among the above inorganic fillers, metal carbonates such as calcium carbonate and zinc carbonate that play an aggregate role in particular; water-containing inorganic substances such as aluminum hydroxide and magnesium hydroxide that give an endothermic effect when heated in addition to the role as an aggregate Is preferred.

  It is considered that the combined use of the hydrated inorganic substance and the metal carbonate greatly contributes to improving the strength of the combustion residue and increasing the heat capacity.

  Among the inorganic fillers, in particular, water-containing inorganic substances such as aluminum hydroxide and magnesium hydroxide are endothermic due to the water generated by the dehydration reaction during heating, and the temperature rise is reduced and high heat resistance is obtained. This is preferable in that the oxide remains as a combustion residue and this acts as an aggregate to improve the strength of the combustion residue.

  Magnesium hydroxide and aluminum hydroxide have different temperature ranges that exhibit dehydration effects, so when used together, the temperature range that exhibits dehydration effects becomes wider, and more effective temperature rise suppression effects can be obtained. It is preferable to do.

  When the particle size of the water-containing inorganic substance is small, the bulk increases and it becomes difficult to achieve high filling. Therefore, in order to increase the dehydration effect, a large particle size is preferable.

  Specifically, it is known that when the particle size is 18 μm, the filling limit amount is improved by about 1.5 times compared to the particle size of 1.5 μm.

  Further, by combining a large particle size and a small particle size, higher packing can be achieved.

  As a commercial item of the said water-containing inorganic substance, for example, as aluminum hydroxide, “trade name: Hygielite H-42M” (manufactured by Showa Denko) with a particle diameter of 1 μm, “trade name: Hygilite H-31 with a particle diameter of 18 μm”. (Made by Showa Denko KK) and the like.

  Examples of commercially available calcium carbonate include “trade name: Whiten SB red” (manufactured by Shiraishi Calcium Co., Ltd.) having a particle size of 1.8 μm, and “trade name: BF300” (manufactured by Bihoku Flour & Chemical Co., Ltd.) having a particle size of 8 μm. Etc.

  As explained at the beginning, as the heat-expandable refractory material used in the present invention, the resin composition containing the above-described reaction-curable resin resin component, heat-expandable component, inorganic filler, etc., and the above-mentioned phosphorus compound Examples of these compounds are described below.

  The heat-expandable refractory material preferably contains 10 to 150 parts by weight of the reaction-curable thermal expansion component and 50 to 300 parts by weight of the inorganic filler with respect to 100 parts by weight of the reaction-curable resin component. .

  The total of the reactive curable thermal expansion component and the inorganic filler is preferably in the range of 200 to 600 parts by weight.

  Such a thermally expandable refractory material expands due to heat from a fire or the like to form a thermally expanded residue. According to this composition, the heat-expandable material is expanded by heat such as a fire, and a necessary volume expansion coefficient can be obtained, and after expansion, a thermal expansion residue having a predetermined heat insulation performance and a predetermined strength. Can be formed, and stable fire resistance can be achieved.

If the amount of the reactive curable thermal expansion component is 10 parts by weight or more, the necessary expansion ratio can be obtained, so that sufficient fire resistance and fire prevention performance can be obtained.
On the other hand, the fluidity | liquidity in 25 degreeC of the said thermally expansible refractory material can be ensured as the quantity of the said thermal expansion component is 150 weight part or less.

Further, when the amount of the inorganic filler is 50 parts by weight or more, there is little volume reduction of the thermal expansion residue after combustion, and a thermal expansion residue for fireproof insulation is obtained.
Furthermore, since the ratio of combustible material increases, flame retardancy may decrease.

  On the other hand, the fluidity | liquidity in 25 degreeC of the said thermally expansible refractory material can be ensured as the quantity of an inorganic filler is 300 weight part or less.

  When the total amount of the thermal expansion component and the inorganic filler in the thermally expandable refractory material is 60 parts by weight or more, the amount of the thermal expansion residue after combustion is not insufficient, and sufficient fire resistance can be easily obtained. Deterioration of physical properties is small and suitable for actual use.

  Furthermore, the thermally expandable refractory material used in the present invention is a plasticizer such as phthalic acid ester, adipic acid ester, phosphoric acid ester, phenolic, amine, etc., as long as the object of the present invention is not impaired. -Based, sulfur-based antioxidants, heat stabilizers, metal damage inhibitors, antistatic agents, stabilizers, cross-linking agents, lubricants, softeners, pigments, tackifier resins, additives, polybutene, petroleum resins Or the like.

The viscosity at 25 ° C. of the thermally expandable refractory material used in the present invention is in the range of 1000 to 100,000 mPa · s based on the value before being injected into the building member.
When the viscosity is 1000 mPa · s or more, the thermally expandable refractory material can be easily filled even in a narrow gap inside the building member. Further, the pressure for injecting the heat-expandable refractory material into the building member, the pressure of the injection device, and the like are not increased more than necessary, and the injection can be performed easily.
Moreover, if the said viscosity is 100,000 mPa * s or less, when inject | pouring the said heat | fever expansible refractory material into a building member, it will become easy to inject | pour a desired filling amount with difficulty in entraining air. In addition, the components of the thermally expandable refractory material are difficult to separate during injection, and can be prevented from becoming nonuniform, so that the composition of the thermally expandable refractory material can be kept uniform within the building member. And can exhibit desired fire resistance.
The viscosity is preferably in the range of 2000 to 600000 mPa · s, and more preferably in the range of 3000 to 400000 mPa · s.

  Adjustment of the viscosity of the said thermally expansible refractory material can be adjusted by selecting the kind etc. of the reaction curable resin component of the thermally expansible refractory material used for this invention. By selecting a liquid reaction curable resin component having a low viscosity at 25 ° C., the viscosity of the thermally expandable refractory material at 25 ° C. can be reduced. Conversely, by selecting a liquid reactive curable resin component having a high viscosity at 25 ° C., the viscosity of the thermally expandable refractory material at 25 ° C. can be increased.

The viscosity of the thermally expandable refractory material can also be adjusted by changing the weight ratio of the thermal expansion component and the inorganic filler contained in the thermally expandable refractory material.
For example, the viscosity of the thermally expandable refractory material at 25 ° C. can be reduced by reducing the weight ratio of the thermally expandable component, inorganic filler, etc. contained in the thermally expandable refractory material. In addition, the viscosity can be reduced by appropriately selecting a liquid inorganic filler at a temperature of 25 ° C.
Conversely, increasing the weight ratio of the thermal expansion component, inorganic filler, and the like contained in the thermally expandable refractory material can increase the viscosity of the thermally expandable refractory material at 25 ° C.

Next, the manufacturing method of the said thermally expansible refractory material is demonstrated.
The method for producing the thermally expandable refractory material is not particularly limited. For example, a method of suspending the thermally expandable refractory material in an organic solvent, or heating and melting it to form a paint, a solvent In the case where a component that is a solid at 25 ° C. is included in the reaction curable resin component contained in the thermally expandable refractory material, such as a method of preparing a slurry by dispersing, the thermally expandable refractory material is used. The resin composition can be obtained by a method such as melting under heating.

  For the thermally expandable refractory material, each component of the thermally expandable refractory material is a known apparatus such as a single-screw extruder, a twin-screw extruder, a Banbury mixer, a kneader mixer, a kneading roll, a raikai machine, and a planetary stirrer. And kneading.

In addition, the main agent having a reactive functional group such as isocyanate group and epoxy group and the curing agent may be kneaded separately together with a filler, and kneaded with a static mixer, a dynamic mixer or the like immediately before injection. .
Further, the components of the heat-expandable refractory material excluding the catalyst and the catalyst can be kneaded in the same manner immediately before injection.

  By the method described above, the thermally expandable refractory material used in the present invention can be obtained.

Since the reaction-curable thermally expandable resin composition obtained as described above has fluidity at a temperature of 25 ° C., it can be injected into the building member.
Here, having fluidity means that the thermally expandable refractory material does not have a certain shape when left standing, and has no fluidity, means that the thermally expandable refractory material is left standing. A case having a certain shape.

The heat-expandable refractory resin member is not particularly limited as long as it is thermally insulated by the expansion layer when exposed to a high temperature such as a fire, and has the strength of the expansion layer, but heating of 50 kW / m ² It is preferable if the volume expansion coefficient after heating for 30 minutes under the conditions is 1.1 to 6 times.
If the volume expansion coefficient is less than 1.1 times, the expansion volume may not be able to fully fill the burned-out portion of the resin component, and fireproof performance may be reduced. On the other hand, if it exceeds 6 times, the strength of the expanded layer is lowered, and the effect of preventing the penetration of the flame may be lowered. More preferably, the volume expansion coefficient is in the range of 1.2 to 5 times, and more preferably in the range of 1.3 to 4 times.

In order for the expansion layer to be self-supporting, the expansion layer needs to have a high strength. As the strength, the sample of the expansion layer is set to 0 using a 0.25 cm ² indenter in a compression tester. It is preferable that the stress at break when measured at a compression speed of 0.1 m / s is 0.05 kgf / cm ² or more. If the stress at break is less than 0.05 kgf / cm ² , the adiabatic expansion layer may not be self-supporting and the fireproof performance may be reduced. More preferably, it is 0.1 kgf / cm ² or more.

  EXAMPLES Next, although an Example demonstrates this invention based on drawing, this invention is not limited at all by these Examples.

  In Example 1, the fireproof reinforcement building member 200 was produced and the fireproof test was implemented. This test and its results will be described.

  FIG. 8 is a schematic front view for explaining the structure of the fireproof reinforcing building member 200 according to the first embodiment of the present invention. Moreover, FIG. 9 is principal part sectional drawing in alignment with the AA line of FIG. 8 before inject | pouring Example thermally expansible refractory material 15, FIG. 10 after inject | pouring Example thermally expansible refractory material 15 It is principal part sectional drawing in alignment with the AA of FIG.

As shown in FIG. 8, a fire-resistant plate material 201 made of a calcium silicate plate is supported by a frame material 202 made of hard vinyl chloride in which a cavity is formed along the longitudinal direction.
A casing 203 is installed between the plate members 201 and 201 along the outer periphery of the plate member 201.

Further, in order to reproduce the opening of a structure such as a house for a fire resistance test, a concrete molded body 204 surrounds the fire resistant plate member 201 and the frame member 202 without a gap.
As shown in FIG. 9, a plurality of cavities 210 to 218 are provided inside the frame member 202 of the fireproof reinforcing building member 200 along the longitudinal direction.

Next, according to the composition shown in Table 1, the thermally expandable refractory material 15 was divided into A component and B component, and each component was stirred using a planetary stirrer.
Specifically, a polyurethane resin was used as the thermally expandable refractory material. A polyether polyol was used as a curing agent for the polyurethane resin as the resin component of the A component, and a polyisocyanate compound was used as the main component of the polyurethane resin as the resin component of the B component.
The ratio of the active hydrogen group (OH) in the polyol compound to the active isocyanate group (NCO) in the polyisocyanate compound (NCO / OH) is obtained by combining the polyisocyanate compound as the main component of the urethane resin and the polyether polyol as the curing agent. Was adjusted to an equivalent ratio of 1.64: 1.

Next, as shown in FIG. 9 and FIG. 10, the outermost cavities 210, 211, 212, among the cavities of the frame material 202 made of hard vinyl chloride having cavities formed along the lengthwise direction, The components A and B were injected into the components 213, 214, and 215 while maintaining the above mixing ratio.
The injected heat-expandable refractory material 15 was cured while foaming inside the cavities 210, 211, 212, 213, 214, 215 and lost its fluidity to form a urethane resin foam.
Next, a fireproof test was performed on the fireproof reinforcing building member 200 in accordance with the conditions of ISO834. The fire resistance test was conducted until the flame penetrated the fireproof reinforcing building member 200.

  As a result of this fire resistance test, a case where no flame leakage was observed for 20 minutes or more from the surface opposite to the heating surface was evaluated as ◯, and a case where flame leakage was observed in less than 20 minutes was evaluated as x. The results are also shown in Table 1.

  With the start of the fire resistance test, the thermally expandable refractory material 15 on the heating surface side expanded to form a thermal expansion residue. Even after 20 minutes, no flame leakage was observed in the fireproof reinforcing building member 200 of Example 1. Flame leakage was observed after 30 minutes.

In the case of Example 1, the amount of the inorganic filler, the thermal expansion component, and the phosphorus compound was changed to the amounts shown in Table 1, and as shown in FIG. 11, the hard in which a cavity was formed along the longitudinal direction A fire resistance test was performed in exactly the same manner as in Example 1 except that the thermally expandable fire resistant material 15 was injected into all the cavities 210 to 218 of the frame member 202 made of vinyl chloride.
With the start of the fire resistance test, the thermally expandable refractory material 15 on the heating surface side expanded to form a thermal expansion residue. Even after 20 minutes, no flame leakage was observed in the fireproof reinforcing building member 220 of Example 2. Flame leakage was observed after 28 minutes.

In the case of Example 1, a fire resistance test was performed in the same manner as in Example 1 except that the amounts of the inorganic filler, the thermal expansion component and the phosphorus compound were changed to the amounts shown in Table 1.
With the start of the fire resistance test, the thermally expandable refractory material 15 on the heating surface side expanded to form a thermal expansion residue. Even after 20 minutes, no flame leakage was observed in the fireproof reinforcing building member 220 of Example 2. Flame leakage was observed after 23 minutes.

In the case of Example 1, the amount of the inorganic filler, the thermal expansion component, and the phosphorus compound was changed to the amounts shown in Table 1, and as shown in FIG. 11, the hard in which a cavity was formed along the longitudinal direction A fire resistance test was performed in exactly the same manner as in Example 1 except that the thermally expandable fire resistant material 15 was injected into all the cavities 210 to 218 of the frame member 202 made of vinyl chloride.
With the start of the fire resistance test, the thermally expandable refractory material 15 on the heating surface side expanded to form a thermal expansion residue. Even after 20 minutes, no flame leakage was observed in the fireproof reinforcing building member 220 of Example 2. Flame leakage was observed after 25 minutes.

[Comparative Example 1]
In the case of Example 1, the thermal expansion component was not used, and as shown in FIG. 11, the cavities 210 to 218 of the frame member 202 made of hard vinyl chloride having cavities formed therein along the longitudinal direction. A fire resistance test was performed in the same manner as in Example 1 except that the thermally expandable fire resistant material 15 was injected into all of them.
At the start of the fire resistance test, the thermally expandable refractory material 15 on the heating surface side maintained its shape, but gradually contracted to form a thermal expansion residue. Flame leakage could be observed after 15 minutes.

[Comparative Example 2]
In the case of Example 1, the phosphorus compound was not used, and as shown in FIG. 11, all of the cavities 210 to 218 of the frame member 202 made of hard vinyl chloride in which cavities are formed along the longitudinal direction. A fire resistance test was performed in the same manner as in Example 1 except that the thermally expandable fire resistant material 15 was injected.
The thermal expansion refractory material 15 on the heating surface side expanded and a thermal expansion residue was formed with the start of the fire resistance test. However, since the shape retention of the thermal expansion residue was low, scattering of the thermal expansion residue was observed. After 14 minutes, flame leakage could be observed.

DESCRIPTION OF SYMBOLS 1,100,200,220 Fireproof reinforcement building member 10,50 Opening frame 11,12,53,54 Vertical frame 11a, 12a, 11b, 12b, 21a, 22a, 210-218 Cavity 13,14,51,52 Horizontal frame 15 Heat-expandable refractory material 20, 60, 201 Plate material 21, 22 Vertical frame 23, 24 Horizontal frame 25 Window glass 26 Rubber seal material, sealing agent 30-33 Hole 30a, 30b Steel material with a cross-section of H-shape 40 Stud 41, 42 Calcium silicate plate 50, 51 Polyvinyl chloride resin frame material 70 Heat insulation material 80 Door knob 202, 203 Frame material 204 Concrete molded body

Claims (4)

A fireproof reinforcement method for building members installed in an opening of a structure,
Before SL building member includes a frame member cavities formed therein along a longitudinal direction, a plate material having a fire resistance, at least,
The plate material having the fire resistance is supported by the frame material,
Opening the hole reaching the cavity in the frame member;
Injecting a thermally expandable refractory material having a viscosity at 25 ° C. in the range of 1000 to 100,000 mPa · s from the hole reaching the cavity into the cavity inside the frame member ;
Reacting in the internal cavity of the frame material to lose the fluidity of the thermally expandable refractory material;
A fireproof reinforcement method for building members, characterized by comprising: The building member comprises two or more plate members;
Injecting the thermally expandable refractory material into a space formed between the plate members facing each other;
Reacting the thermally expandable refractory material within the space to lose the fluidity of the thermally expandable refractory material;
The a refractory reinforcing method of building element according to claim 1. The fireproof reinforcement method for building members according to claim 1 or 2 , wherein the thermally expandable refractory material includes at least a reactive curable resin component, a thermally expandable component, and an inorganic filler. The reaction curable resin component contained in the thermally expandable refractory material is urethane resin foam, isocyanurate resin foam, epoxy resin foam, phenol resin foam, urea resin foam, unsaturated polyester resin foam, alkyd resin foam, melamine resin foam. The fireproof reinforcement method for building members according to any one of claims 1 to 3 , wherein the method is at least one selected from the group consisting of diallyl phthalate resin foam and silicone resin foam.