Mullion, manufacturing method of mullion and glass wall

Abstract

To provide a mullion, a method for manufacturing the mullion, and a glass wall capable of achieving both heat insulation and fire resistance.SOLUTION: A glass wall comprises: an outer mold material 10 that can support one ends 40a, 41a of glasses 40, 41 that are arranged to partition an outside A and an inside B from the outside A side; an inner mold material 20 that can support one ends 40a, 41a from the inside B side and is arranged so as to face the outer mold material 10; and a non-melting organic insulation material 30 arranged in a gap between the outer mold material 10 and the inner mold material 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mullion and a glass wall as components for separating the indoor and outdoor areas of a building. [Background technology]

[0002] In buildings such as mid- to high-rise buildings, curtain walls comprising glass and mullions supporting the glass are used as components separating the indoor and outdoor spaces. Curtain walls with insulating material interposed between the mullions have been proposed to improve thermal insulation for the purpose of improving the indoor living environment (see, for example, Patent Document 1). Curtain walls made up of mullions with insulating material often use organic insulating materials, which are inexpensive and effective as insulating materials. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-65627 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when organic insulation materials are used in mullions, when they ignite, the flames not only spread upward, but can also melt and spread rapidly sideways and downwards, causing greater damage, so there is a need for improved fire resistance. Therefore, an object of the present invention is to provide a mullion that can achieve both heat insulation and fire resistance, a method for manufacturing the mullion, and a glass wall. [Means for solving the problem]

[0005] The present invention has been made to solve the above problems, and the gist of the present invention is as follows. [1] A post comprising an outer molding capable of supporting one end of glass from the outdoor side, the end of which is arranged to separate the indoor and outdoor spaces; an inner molding capable of supporting the end from the indoor side and arranged opposite the outer molding; and a non-melting organic insulating material arranged in the gap between the outer molding and the inner molding. [2] The support structure according to [1], wherein the organic heat insulating material is at least one selected from the group consisting of urethane foam, phenol foam, and styrene foam. [3] The support structure according to [1] or [2], wherein the organic insulating material is a flame-retardant urethane foam. [4] The support according to [3], wherein the flame-retardant urethane foam contains a solid flame retardant. [5] A mullion frame described in any of [1] to [4], in which the outer and inner moldings are arranged to face each other across the gap between a pair of glass panes arranged side by side to separate the indoor and outdoor spaces. [6] A method for manufacturing a post, comprising the steps of preparing an outer molding capable of supporting one end of glass from the outdoor side, which is arranged to separate the indoor and outdoor areas, and an inner molding capable of supporting said one end from the indoor side, and arranging said inner molding so that it faces the outer molding; and arranging a non-melting organic insulating material in the gap between the outer molding and the inner molding. [7] A glass wall comprising glass that separates the indoor and outdoor spaces and a mullion as described in any one of [1] to [5]. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide a mullion, a method for manufacturing a mullion, and a glass wall that can achieve both thermal insulation and fire resistance. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a cross-sectional view of a mullion and glass wall according to an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] The present invention will be described in more detail below using embodiments.

[0009] [Mulliner] As shown in Figure 1, the mullion 2 according to an embodiment of the present invention is a member that supports glass panels 40, 41 arranged to separate an outdoor area A from an indoor area B. The mullion 2 comprises an outer mold member 10, an inner mold member 20, and an organic insulating material 30.

[0010] The outer mold member 10 is capable of supporting one end 40a, 41a of the glass panes 40, 41 from the outdoor side A. The inner mold member 20 is capable of supporting one end 40a, 41a of the glass panes 40, 41 from the indoor side B, and is arranged to face the outer mold member 10. The organic heat insulating material 30 is non-meltable and is arranged in the gap between the outer mold member 10 and the inner mold member 20.

[0011] As will be described later, the glass panes 40 and 41 constitute, for example, a glass wall and are arranged along the surface direction of each pane. The glass panes 40 and 41 may be arranged, for example, one above the other as shown in Fig. 1, and the outer mold member 10 and the inner mold member 20 may each be a member extending along the horizontal direction. In the mullions 2 incorporated into the glass wall, the outer mold member 10 is arranged on the outdoor side A, and the inner mold member 20 is arranged on the indoor side B. The outer mold member 10 and the inner mold member 20 face each other at the outer peripheries of one end 40a, 41a of each glass pane 40, 41. The outer mold member 10 and the inner mold member 20 each support one end 40a, 41a of a pair of glasses 40, 41 arranged side by side. The outer mold member 10 and the inner mold member 20 are arranged to face each other across a gap between the pair of glasses 40, 41, where an organic insulating material 30 will be placed.

[0012] The outer form member 10 is equipped with insulation support portions 11 and 12 that support the organic insulation material 30. The insulation support portion 11 supports the upper surface of the organic insulation material 30, and the insulation support portion 12 supports the lower surface of the organic insulation material 30. The insulation support portions 11 and 12 are preferably provided so as to protrude from the plate-shaped outer form member base portion 10a of the outer form member 10 toward the indoor B side. As shown in FIG. 1, the insulation support portion 12 preferably has a hook-shaped end portion to make it easier to support the lower surface of the organic insulation material 30. The outer profile 10 also includes outer glass support members 13a, 13b and outer glass support members 14a, 14b that support the outdoor A side of one end 40a, 41a of each of a pair of panes 40, 41 arranged side by side to separate the outdoor A and indoor B. The outer glass support members 13a, 13b support the one end 40a, which is the lower end side of the upper pane 40 of the pair of panes 40, 41 arranged side by side. The outer glass support members 14a, 14b support the one end 41a, which is the upper end side of the lower pane 41 of the pair of panes 40, 41 arranged side by side. The outer glass support members 13a, 13b and the outer glass support members 14a, 14b are provided to protrude from the plate-shaped outer profile base member 10a of the outer profile 10 toward the indoor B side, for example, but may have various shapes as long as they are capable of supporting the panes.

[0013] The inner form member 20 has insulation support portions 21 and 22 that support the organic insulation material 30. The insulation support portion 21 supports the upper surface of the organic insulation material 30, and the insulation support portion 22 supports the lower surface of the organic insulation material 30. The insulation support portions 21 and 22 are preferably provided to protrude from the plate-shaped inner form member base portion 20a of the inner form member 20 toward the indoor A side. As shown in FIG. 1, the insulation support portion 22 preferably has a hook-shaped end to make it easier to support the lower surface of the organic insulation material 30. The inner mold member 20 also includes inner glass support portions 23a, 23b and inner glass support portions 24a, 24b that support the indoor B side of one end portion 40a, 41a of each of a pair of panes 40, 41 arranged side by side to separate the outdoor A from the indoor B. The inner glass support portions 23a, 23b support the one end portion 40a, which is the lower end side of the upper pane 40 of the pair of panes 40, 41 arranged side by side. The inner glass support portions 24a, 24b support the one end portion 41a, which is the upper end side of the lower pane 41 of the pair of panes 40, 41 arranged side by side. The inner glass support portions 23a, 23b and the inner glass support portions 24a, 24b are provided to protrude from the plate-shaped inner mold member base portion 20a of the inner mold member 20 toward the indoor A side, for example, but may have various shapes as long as they are capable of supporting the panes.

[0014] The inner mold member 20 has a closed section 50. The closed section 50 is a section that is closed and filled with air, and provides heat insulation. The closed section 50 is preferably provided on the inner surface side of the inner mold member base portion 20a of the inner mold member 20, and is preferably positioned at the same height as the organic heat insulating material 30. The upper surface 50a of the closed section 50 may be configured to include a panel material support portion 26. The lower surface 50b of the closed section 50 may be configured to include panel material support portions 25a, 25b. The panel material support portions 25a, 25b, 26 may have various shapes as long as they are capable of supporting a portion of the panel material to be supported. In this way, by providing the panel material support portions 25a, 25b, 26 on a portion of the inner mold member 20, the panel material can be supported. Examples of panel materials include fire-resistant panels such as aluminum panels, steel panels, glass panels, concrete panels, lightweight aerated concrete (ALC) panels, extruded cement panels (ECP), and ceramic siding, as well as decorative panels such as gypsum boards, calcium silicate boards, and wood boards. Examples of gypsum boards include ordinary gypsum boards (GB-R) specified in JIS A 6901, decorative gypsum boards (GB-D) specified in JIS A 6911, waterproof gypsum boards (GB-S) specified in JIS A 6912, reinforced gypsum boards (GB-F) specified in JIS A 6913, and sound-absorbing gypsum boards (GB-P) specified in JIS A 6301.

[0015] There are no particular limitations on the material of the outer mold member 10 and the inner mold member 20 as long as it is fire-resistant, lightweight, and durable. Examples of materials for the outer mold member 10 and the inner mold member 20 include metal materials such as aluminum, and resin materials such as polyvinyl chloride resin.

[0016] The outer form material 10 and the inner form material 20 may be separate members that are connected together via the organic heat insulating material 30. The outer form material 10 and the inner form material 20 may also be connected together to form one unit, for example, the heat insulating material support part 12 and the heat insulating material support part 22 may be connected. When the heat insulating material support part 12 and the heat insulating material support part 22 are connected, it is preferable that a portion of the outer form material 10 and the inner form material 20 be connected in the longitudinal direction from the viewpoint of heat insulation.

[0017] The organic thermal insulating material 30 is non-melting, and will not melt even when heated by a fire or the like. In this specification, "non-melting" refers to a property of not melting when heated to 350°C. Melting can be determined by common scientific methods; for example, the presence or absence of melting can be determined from changes in thermal history using differential scanning calorimetry (DSC). Since the organic heat insulating material 30 is non-melting, it will not melt in the event of a fire or the like, and damage caused by the spread of fire can be suppressed.

[0018] The organic heat insulating material 30 preferably has excellent flame retardancy, and is preferably quasi-noncombustible or noncombustible. By having quasi-noncombustible or noncombustible properties, the organic heat insulating material 30 itself can be prevented from burning and causing a fire to spread. In addition, the organic heat insulating material 30 can be easily made non-meltable. The organic heat insulating material 30 is preferably semi-non-combustible. Specifically, in a heat generation test, a test piece (organic heat insulating material 30) having a thickness of 50 mm is tested to have a total heat generation amount of 8 MJ / m for 10 minutes. 2 Preferably, it is 5MJ / m or less. 2 More preferably, it is 3MJ / m or less. 2 It is even more preferable that: Furthermore, it is more preferable that the organic heat insulating material 30 is non-flammable. Specifically, in a heat generation test, a test piece (organic heat insulating material 30) having a thickness of 50 mm is tested to have a total heat generation amount of 8 MJ / m for 20 minutes. 2 Preferably, it is 5MJ / m or less. 2 More preferably, it is 3MJ / m or less. 2 It is even more preferable that: On the other hand, the lower the total calorific value of each of the above, the better. 2 Although it is good if it is more than this, practically it is 0.5MJ / m 2 That's all. In the heat generation test, it is preferable that the test specimen does not come into contact with the ignition for 10 minutes or 20 minutes and does not ignite. The heat generation test was conducted by setting the test specimen at a distance of 13 mm from the ignition, and in accordance with the ISO-5660 test method, the radiant heat intensity was 50 kW / m 2 This test uses a cone calorimeter that heats the specimen at a temperature of 100°C. The distance between the specimen and the ignition after the 10-minute or 20-minute heating period is sufficient as long as it is greater than 0 mm.

[0019] The thickness of the organic heat insulating material 30 is preferably 3 mm or more and 50 mm or less, more preferably 4 mm or more and 25 mm or less, and even more preferably 5 mm or more and 10 mm or less. When the thickness of the organic heat insulating material 30 is within the above range, it can have high heat insulating properties and fire resistance, and can be lightweight. Note that the thickness of the organic heat insulating material 30 is the length in the vertical direction in the embodiment of Figure 1.

[0020] The density of the organic heat insulating material 30 is 20 kg / m 3 More than 90kg / m 3 It is preferable that the density is 25 kg / m or less. 3 More than 75kg / m 3 More preferably, it is 30 kg / m or less. 3 More than 60kg / m 3 It is more preferable that the density of the organic heat insulating material 30 is within the above range. When the density of the organic heat insulating material 30 is within the above range, the organic heat insulating material 30 can have high heat insulating properties and fire resistance, and can also be lightweight.

[0021] The organic insulating material 30 may be an organic insulating material having fire resistance and heat insulation properties, but a foam is preferably used. Using a foam facilitates achieving excellent heat insulation. Furthermore, it is preferable that the organic insulating material 30 is one that forms a carbonized layer when heated in the event of a fire. By forming a carbonized layer when heated, the organic insulating material 30 exhibits non-damage, heat-shielding, and flame-shielding properties, and the carbonized layer can suppress a decrease in heat insulation properties even in the event of a fire, etc., thereby maintaining the fire resistance of the mullion 2. Furthermore, it is easier to make the organic insulating material 30 non-meltable. The foam used as the organic heat insulating material 30 is preferably at least one selected from the group consisting of urethane foam, phenol foam, and styrene foam, and more preferably urethane foam. As the urethane foam, it is preferable to use a flame-retardant urethane foam, and a specific example of a commercially available product is "Paxflame" (manufactured by Sekisui Chemical Co., Ltd.).

[0022] The flame-retardant urethane foam used as the organic thermal insulation material 30 is a reaction product obtained by reacting and foaming a flame-retardant urethane resin composition. The flame-retardant urethane foam is preferably a filled flame-retardant urethane foam. The use of a filled flame-retardant urethane foam makes it easier to position the organic thermal insulation material 30 between the outer mold member 10 and the inner mold member 20. The flame-retardant urethane resin composition contains a polyol compound, a polyisocyanate compound, a blowing agent, and a catalyst. As described below, flame-retardant urethane foam can be easily imparted with flame retardancy and non-melting properties by adjusting the isocyanate index to a certain value or more or by incorporating a flame retardant into the flame-retardant urethane resin composition. From the viewpoint of flame retardancy and non-melting properties, the flame-retardant urethane resin composition preferably has an isocyanate index of a certain value or more and contains a flame retardant.

[0023] <Polyol compounds> The polyol compound contained in the flame-retardant urethane resin composition is not particularly limited, but polyether polyols, polyester polyols, and bromine-containing polyols are preferred. Among them, aromatic polyester polyols are preferred from the viewpoint of improving the flame retardancy of the resulting flame-retardant urethane foam and easily imparting semi-nonflammable and nonflammable properties to the flame-retardant urethane foam.

[0024] <Polyisocyanate compounds> As the polyisocyanate compound contained in the flame-retardant urethane resin composition, various polyisocyanate compounds having two or more isocyanate groups, such as aromatic, alicyclic, and aliphatic polyisocyanate compounds, can be used.

[0025] [Isocyanate Index] The isocyanate index of the flame-retardant urethane resin composition is preferably in the range of 130 to 1,000, more preferably 150 to 700, and even more preferably 230 to 500. When the isocyanate index is in this range, the nurate conversion rate is high, improving flame retardancy and facilitating the formation of a charred layer. In addition, it is easy to impart quasi-nonflammable and nonflammable properties to the flame-retardant urethane foam, and it is also easy to make it non-meltable.

[0026] The isocyanate index (INDEX) is calculated by the following method. INDEX = number of equivalents of isocyanate ÷ (number of equivalents of polyol + number of equivalents of water) × 100 where: Isocyanate equivalents = number of parts of polyisocyanate used x NCO content (%) x 100 / NCO molecular weight Polyol equivalents = OHV x parts of polyol used ÷ molecular weight of KOH, where OHV is the hydroxyl value of the polyol (mgKOH / g). Equivalents of water = parts of water used x number of OH groups in water / molecular weight of water In the above formula, the unit of parts used is weight (g), the molecular weight of the NCO group is 42, the NCO content is the proportion of NCO groups in the polyisocyanate compound expressed as mass %, and for the convenience of unit conversion in the above formula, the molecular weight of KOH is set to 56,100, the molecular weight of water is 18, and the number of OH groups in water is 2.

[0027] <Flame retardant> The flame-retardant urethane resin composition preferably contains a flame retardant. By including a flame retardant, the flame-retardant urethane resin composition can impart flame retardancy to the organic heat insulating material 30 and also facilitate the formation of a charred layer when heated. Examples of the flame retardant used in the present invention include phosphate ester-based flame retardants and solid flame retardants other than phosphate ester-based flame retardants. The flame-retardant urethane resin composition preferably contains a solid flame retardant as a flame retardant, and more preferably contains a phosphate ester-based flame retardant in addition to the solid flame retardant. The use of a solid flame retardant as a flame retardant makes it easier to achieve non-melting properties and also makes it easier to impart non-flammable or quasi-non-flammable properties.

[0028] [Phosphate ester flame retardant] The phosphate ester-based flame retardant is not particularly limited, but it is preferable to use monophosphate ester, condensed phosphate ester, etc. Monophosphate ester is a compound having one phosphorus atom in the molecule. It is preferable to use a phosphate ester-based flame retardant that is liquid at room temperature (23°C) and normal pressure (1 atmosphere). The monophosphate ester is not particularly limited, and examples thereof include trimethyl phosphate, triethyl phosphate, tributyl phosphate, tri(2-ethylhexyl) phosphate, tributoxyethyl phosphate, triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, tris(isopropylphenyl) phosphate, tris(phenylphenyl) phosphate, trinaphthyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate, diphenyl phosphate, Examples of the acryloyloxyethyl phosphate include diphenyl(2-ethylhexyl)phosphate, di(isopropylphenyl)phenyl phosphate, monoisodecyl phosphate, 2-acryloyloxyethyl acid phosphate, 2-methacryloyloxyethyl acid phosphate, diphenyl-2-acryloyloxyethyl phosphate, diphenyl-2-methacryloyloxyethyl phosphate, melamine phosphate, dimelamine phosphate, melamine pyrophosphate, and tris(β-chloropropyl)phosphate. The condensed phosphate ester is not particularly limited, but examples thereof include condensed phosphate esters such as trialkyl polyphosphate, resorcinol polyphenyl phosphate, resorcinol poly(di-2,6-xylyl) phosphate, hydroquinone poly(2,6-xylyl) phosphate, and condensates thereof. Among the above, it is preferable to use monophosphate esters, and it is more preferable to use tris(β-chloropropyl)phosphate. The phosphate esters may be used singly or in combination of two or more.

[0029] The amount of the phosphate ester blended is preferably in the range of 1 to 70 parts by mass, more preferably 3 to 40 parts by mass, and more preferably 5 to 30 parts by mass, per 100 parts by mass of the urethane resin. Note that, in the flame-retardant urethane resin composition, 100 parts by mass of the urethane resin means 100 parts by mass of the total amount of the polyol compound and the polyisocyanate compound.

[0030] [Solid flame retardant] The solid flame retardant is preferably selected from red phosphorus, phosphate-containing flame retardants, bromine-containing flame retardants, chlorine-containing flame retardants, boron-containing flame retardants, antimony-containing flame retardants, and metal hydroxides. The solid flame retardant is a flame retardant that becomes solid at normal pressure (1 atmosphere) and normal temperature (23°C).

[0031] Red Phosphorus There is no limitation on the red phosphorus used in the present invention, and commercially available products can be appropriately selected and used. The red phosphorus does not need to be blended as simple red phosphorus, and may be subjected to appropriate surface treatment, etc. Use of red phosphorus as a solid flame retardant facilitates the formation of a carbonized layer, making it easier to impart properties such as semi-non-flammable, non-flammable, and non-melting properties.

[0032] <Phosphate-containing flame retardants> Examples of phosphate-containing flame retardants include phosphates formed from salts of the above-mentioned various phosphoric acids with at least one metal or compound selected from metals of Groups IA to IVB of the periodic table, ammonia, aliphatic amines, and aromatic amines. The phosphoric acid is not particularly limited, and examples thereof include various phosphoric acids such as monophosphoric acid, pyrophosphoric acid, and polyphosphoric acid. Examples of metals in Groups IA to IVB of the periodic table include lithium, sodium, calcium, barium, iron (II), iron (III), aluminum, etc. Examples of the aliphatic amines include methylamine, ethylamine, diethylamine, triethylamine, ethylenediamine, piperazine, etc. Examples of the aromatic amines include pyridine, triazine, melamine, ammonium, etc. The phosphate-containing flame retardant may be subjected to a known treatment for improving water resistance, such as treatment with a silane coupling agent or coating with a melamine resin. Specific examples of phosphate-containing flame retardants include monophosphates, pyrophosphates, and polyphosphates.

[0033] Bromine-containing flame retardants The bromine-containing flame retardant is not particularly limited as long as it is a compound containing bromine in its molecular structure, and examples thereof include aromatic brominated compounds. Specific examples of aromatic brominated compounds include monomeric organic bromine compounds such as hexabromobenzene, pentabromotoluene, hexabromobiphenyl, decabromobiphenyl, hexabromocyclodecane, decabromodiphenyl ether, octabromodiphenyl ether, hexabromodiphenyl ether, bis(pentabromophenoxy)ethane, ethylene-bis(tetrabromophthalimide), and tetrabromobisphenol A. Other examples include brominated polycarbonates such as polycarbonate oligomers produced using brominated bisphenol A as a raw material and copolymers of polycarbonate oligomers and bisphenol A; brominated epoxy compounds such as diepoxy compounds produced by reacting brominated bisphenol A with epichlorohydrin and monoepoxy compounds obtained by reacting brominated phenols with epichlorohydrin; halogenated bromine compound polymers such as poly(brominated benzyl acrylate), brominated polyphenylene ether, brominated bisphenol A, condensates of cyanuric chloride and brominated phenol, brominated (polystyrene), poly(brominated styrene), brominated polystyrenes such as crosslinked brominated polystyrene, and crosslinked or non-crosslinked brominated poly(methylstyrene).

[0034] <Chlorine-containing flame retardants> Chlorine-containing flame retardants include those commonly used in flame-retardant resin compositions, such as polychlorinated naphthalene, chlorendic acid, and dodecachlorododecahydrodimethanodibenzocyclooctene, which is sold under the trade name "Dechlorane Plus."

[0035] <Boron-containing flame retardants> Examples of boron-containing flame retardants include borax, boron oxide, boric acid, and borate salts. Examples of boron oxide include diboron trioxide, boron trioxide, diboron dioxide, tetraboron trioxide, and tetraboron pentoxide. Examples of borates include borates of alkali metals, alkaline earth metals, elements of Groups 4, 12 and 13 of the periodic table, and ammonium. Specific examples include alkali metal borates such as lithium borate, sodium borate, potassium borate, and cesium borate; alkaline earth metal borates such as magnesium borate, calcium borate, and barium borate; zirconium borate, zinc borate, aluminum borate, and ammonium borate. Preferably, the boron-containing flame retardant is a borate, more preferably zinc borate. The boron-containing flame retardants may be used alone or in combination of two or more.

[0036] Antimony-containing flame retardants Examples of antimony-containing flame retardants include antimony oxide, antimonates, and pyroantimonates. Examples of antimony oxides include antimony trioxide and antimony pentoxide. Examples of antimonate salts include sodium antimonate and potassium antimonate. Examples of pyroantimonate salts include sodium pyroantimonate and potassium pyroantimonate. Preferably, the antimony-containing flame retardant is antimony oxide.

[0037] 《Metal hydroxide》 Examples of metal hydroxides include magnesium hydroxide, calcium hydroxide, aluminum hydroxide, iron hydroxide, nickel hydroxide, zirconium hydroxide, titanium hydroxide, zinc hydroxide, copper hydroxide, vanadium hydroxide, and tin hydroxide.

[0038] The solid flame retardants may be used alone or in combination of two or more. The amount of solid flame retardant added is preferably in the range of 1 to 70 parts by mass, more preferably in the range of 3 to 50 parts by mass, and even more preferably in the range of 4 to 40 parts by mass, per 100 parts by mass of urethane resin, from the viewpoint of imparting flame retardancy, non-melting properties, etc. In addition, from the viewpoint of imparting flame retardancy, the total amount of flame retardant to be added is preferably in the range of 3 to 100 parts by mass, more preferably in the range of 4 to 50 parts by mass, and even more preferably in the range of 5 to 40 parts by mass, per 100 parts by mass of the urethane resin.

[0039] <Foaming agent> The flame-retardant urethane resin composition contains a blowing agent. Specific examples of the blowing agent include water, low-boiling hydrocarbons, chlorinated aliphatic hydrocarbon compounds, fluorine compounds, hydrochlorofluorocarbon compounds, hydrofluorocarbons, ether compounds, and hydrofluoroolefins. Further examples of the blowing agent include organic physical blowing agents such as mixtures of these compounds, and inorganic physical blowing agents such as nitrogen gas, oxygen gas, argon gas, and carbon dioxide gas. Among these, it is preferable to use hydrofluoroolefins, and it is also preferable to use hydrofluoroolefins in combination with water.

[0040] <Catalyst> The flame-retardant urethane resin composition contains a catalyst. The catalyst may contain, for example, one or both of a urethanization catalyst and a trimerization catalyst, and preferably contains both.

[0041] <Filler> The flame-retardant urethane resin composition may contain a filler (inorganic filler) other than the solid flame retardant. In addition, examples of inorganic fillers other than solid flame retardants include silica, diatomaceous earth, alumina, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, ferrites, basic magnesium carbonate, calcium carbonate, magnesium carbonate, barium carbonate, dawsonite, hydrotalcite, calcium sulfate, barium sulfate, potassium salts of calcium silicate, talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite, imogolite, sericite, glass beads, silica powder, aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon powder, charcoal powder, various metal powders, potassium titanate, magnesium sulfate, lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, various magnetic powders, and fly ash.

[0042] <Foam stabilizer> The flame-retardant urethane resin composition optionally contains a foam stabilizer. Examples of foam stabilizers include surfactants such as polyoxyalkylene foam stabilizers (e.g., polyoxyalkylene alkyl ethers) and silicone foam stabilizers (e.g., organopolysiloxanes). However, the surfactant effect can be achieved as long as the foam stabilizer has a structure containing polar and non-polar moieties within the molecule, so the foam stabilizer is not limited to the above types. Furthermore, the silicone foam stabilizer may contain a graft copolymer of polydimethylsiloxane and polyethylene glycol. The foam stabilizers may be used alone or in combination of two or more.

[0043] <Other additives> The flame-retardant urethane resin composition may contain additives such as phenolic, amine, or sulfur-based antioxidants, heat stabilizers, light stabilizers, metal inhibitors, antistatic agents, crosslinking agents, lubricants, softeners, pigments, dyes, and tackifying resins, as long as the effects of the present invention are not impaired.

[0044] [Manufacturing method of mullions] A method for manufacturing a mullion according to one embodiment of the present invention includes the following steps. (I) A process of preparing an outer mold member 10 capable of supporting one end 40 a, 41 a of glass 40, 41 arranged to separate outdoor A from indoor B from the outdoor side, and an inner mold member 20 capable of supporting one end 40 a, 41 a from the indoor side, and arranging the inner mold member 20 so that it faces the outer mold member 10. (II) Step of placing a non-melting organic heat insulating material 30 in the gap between the outer mold material 10 and the inner mold material 20

[0045] Specifically, in the method of manufacturing the mullions, first, an outer mold member 10 and an inner mold member 20 are prepared, and the inner mold member 20 is arranged so as to face the outer mold member 10 . Next, a flame-retardant urethane resin composition is injected into the gap between the outer mold material 10 and the inner mold material 20, for example from the top surface of the gap, and after the flame-retardant urethane resin composition is foamed, the gap between the outer mold material 10 and the inner mold material 20 is filled with flame-retardant urethane foam, resulting in a support structure 2 in which the outer mold material 10 and the inner mold material 20 are integrated by the flame-retardant urethane foam (organic insulating material 30). If there is a gap on the underside of the gap between the outer mold member 10 and the inner mold member 20 and the flame-retardant urethane resin composition leaks out when it is injected into the gap, a leakage prevention film can be placed on the underside of the gap before the flame-retardant urethane resin composition is injected.

[0046] The outer mold member 10 and the inner mold member 20 prepared in step (I) may be separate members. However, as described above, the outer mold member 10 and the inner mold member 20 may be connected to form a single unit. In this case, the outer mold member 10 and the inner mold member 20 may be connected, for example, between the insulation support portion 12 and the insulation support portion 22, as described above. In this case, after filling with flame-retardant urethane foam, part or all of the connecting portion may be cut off. By cutting off part or all of the connecting portion, it becomes easier to ensure thermal insulation.

[0047] In manufacturing the mullions 2, the organic heat insulating material 30 may be placed on the outer and inner form materials 10 and 20 that are incorporated into the glass wall or the like in step (II). Furthermore, before being incorporated into a glass wall or the like, an organic heat insulating material 30 may be placed between the outer formwork 10 and the inner formwork 20 in step (II). In this case, glass 40, 41 may be attached to the mullion 2 manufactured through steps (I) and (II) and then incorporated into a glass wall or the like. In this case, the mullion 2 may be incorporated into the glass wall or the like upside down.

[0048] In the above manufacturing method, typically, the upper surface of the gap into which the flame-retardant urethane resin composition is injected is formed by the insulation supporting parts 11 and 21, and the lower surface of the gap is formed by the insulation supporting parts 12 and 22, and the flame-retardant urethane resin composition is injected through the gap between the insulation supporting parts 11 and 21. However, when assembling the components upside down as described above, the upper surface of the gap into which the flame-retardant urethane resin composition is injected may be formed by the insulation supporting parts 12 and 22, and the lower surface of the gap may be formed by the insulation supporting parts 11 and 21, and the flame-retardant urethane resin composition may be injected through the gap between the insulation supporting parts 12 and 22.

[0049] Furthermore, although the above describes an example in which a filled-type flame-retardant urethane foam is used, when using other filled-type foams, the organic heat insulating material 30 can be placed in the gap between the outer mold member 10 and the inner mold member 20 in the same manner as above. Furthermore, when using foams other than filled-type foams, the organic heat insulating material 30 can also be placed in the gap between the outer mold member 10 and the inner mold member 20 in a known manner.

[0050] [Glass Wall] As shown in FIG. 1, the glass wall 1 according to the embodiment of the present invention comprises glass panels 40 and 41 that separate the outdoor area A from the indoor area B, and the mullions 2 described above.

[0051] According to the configuration of this embodiment described above, the organic insulating material 30 does not melt when heated, so it will not melt due to a fire or the like, and damage caused by the spread of fire can be suppressed, thereby achieving both the insulating properties and fire resistance of the glass wall 1 and the mullion 2.

[0052] [Other embodiments] The present invention is not limited to the configurations of the above-described embodiments, and any improvements and modifications may be made without departing from the technical concept of the present invention. For example, in the above embodiment, the organic heat insulating material 30 is shown as being made of a single substance, but it may be made of a combination of multiple substances. Although the outer frame member 10 and the inner frame member 20 are described as members extending horizontally, they may be members extending vertically. In this case, the outer frame member 10 and the inner frame member 20 should each be positioned so as to support a pair of glass panes arranged horizontally. [Explanation of symbols]

[0053] 1. Glass Wall 2 mullions 10 Outer profile 10a Outer mold base part 11,12 Insulation support section 13a, 13b Outer glass support 14a, 14b Outer glass support parts 20 Inner profile 20a Inner mold base 21, 22 Insulation support section 23a, 23b Inner glass support 24a, 24b Inner glass support 30 Organic insulation materials 50 Closed Compartment

Claims

1. an outer mold member capable of supporting, from the outdoor side, one end of glass arranged to separate the indoor and outdoor spaces; an inner form member whose one end can be supported from the indoor side and which is arranged to face the outer form member; a non-melting organic heat insulating material disposed in the gap between the outer mold member and the inner mold member, The organic heat insulating material is at least one selected from the group consisting of urethane foam, phenol foam, and styrene foam.

2. 2. The support structure according to claim 1, wherein the organic insulating material is a flame-retardant urethane foam.

3. 3. The support of claim 2, wherein the flame-retardant urethane foam contains a solid flame retardant.

4. The mullion described in any one of claims 1 to 3, wherein the outer molding material and the inner molding material are arranged to face each other across the gap between a pair of glass panes arranged side by side to separate the indoor and outdoor areas.

5. A support structure described in any one of claims 1 to 4, wherein the outer form material and the inner form material are connected only via the organic insulating material.

6. a step of preparing an outer mold member capable of supporting, from the outdoor side, one end of a glass pane that is to be arranged so as to separate an indoor space from an outdoor space, and an inner mold member capable of supporting the one end of the glass pane from the indoor side, and arranging the inner mold member so that the inner mold member faces the outer mold member; and placing a non-melting organic heat insulating material in the gap between the outer mold member and the inner mold member. The method for manufacturing a mullion, wherein the organic heat insulating material is at least one selected from the group consisting of urethane foam, phenol foam, and styrene foam.

7. Glass separating the indoors and outdoors, A glass wall comprising a mullion according to any one of claims 1 to 5.

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