Inorganic fiber fabric for building membrane material and building membrane material

Abstract

The present invention provides an inorganic fiber fabric for building membrane materials and a building membrane material. The inorganic fiber fabric for building membrane materials and the like have excellent heat damage resistance and excellent weaving properties and have high applicability to building membrane material applications. The average Al2O3 content rate At of the warp yarns constituting the inorganic fiber fabric and the average Al2O3 content rate Ay of the weft yarns constituting the inorganic fiber fabric are each 17.5 mass% or more, the mass per unit length of the warp yarns Tt and the mass per unit length of the weft yarns Ty are in the range of 100 to 600 g / 1000 m, the weaving density of the warp yarns Wt and the weaving density of the weft yarns Wy are in the range of 10.0 to 55.0 ends / 25 mm, the ratio of Tt to Ty (Tt / Ty) is in the range of 0.66 to 1.50, and At, Ay, Tt, Ty, Wt, and Wy satisfy the following formula (1-1): 316.5 ≤ Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100) ≤ 550.0 … (1-1).

Description

Technical Field

[0001] This invention relates to an inorganic fiber fabric for use in architectural membrane materials and architectural membrane materials. Background Technology

[0002] Conventionally, as a membrane material for buildings or structures (hereinafter referred to as architectural membrane material), there are known non-combustible sheets comprising a glass fiber fabric and a resin coating covering both sides of the glass fiber fabric (for example, see Patent Document 1).

[0003] However, even if the aforementioned conventional non-combustible sheets are deemed non-combustible from the perspective of calorific value, the fiberglass fabric within them may break under prolonged heating at high temperatures. Therefore, especially when these non-combustible sheets are used as ceiling materials, in the event of a fire, the damaged fiberglass fabric could cause the non-combustible sheets to fall, thus they cannot be considered to possess sufficient fire resistance.

[0004] On the other hand, refractory materials containing alumina fiber fabrics are known (for example, see Patent Document 2).

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2018-84097

[0008] Patent Document 2: Japanese Patent Application Publication No. 2000-331546 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] Therefore, it can be considered that by using the above-mentioned alumina fiber fabric to replace the above-mentioned conventional non-combustible sheet glass fiber fabric, a building membrane material with sufficient fire resistance can be obtained.

[0011] However, the above-mentioned materials have the following problems: the alumina fiber fabric has poor weavability compared to glass fiber fabric, and the sheet containing the alumina fiber fabric and the resin coating covering both sides of the alumina fiber fabric cannot have sufficient strength when used as a building membrane material.

[0012] The purpose of this invention is to eliminate the above-mentioned problems and provide an inorganic fiber fabric for architectural membrane materials that has excellent heat resistance and excellent weavability and is highly applicable to architectural membrane material applications, as well as an architectural membrane material using the inorganic fiber fabric for architectural membrane materials.

[0013] Methods for solving problems

[0014] To achieve the above object, the present application relates to an inorganic fiber fabric for building membrane materials, characterized in that the average Al2O3 content At of the warp yarns constituting the inorganic fiber fabric and the average Al2O3 content Ay of the weft yarns constituting the inorganic fiber fabric are each in the range of 17.5 mass% or more, the mass per unit length of the warp yarns constituting the inorganic fiber fabric Tt and the mass per unit length of the weft yarns constituting the inorganic fiber fabric Ty are each in the range of 100 to 600 g / 1000 m, the weft density of the warp yarns constituting the inorganic fiber fabric Wt and the weft density of the weft yarns constituting the inorganic fiber fabric Wy are each in the range of 10.0 to 55.0 ends / 25 mm, the ratio of Tt to Ty (Tt / Ty) is in the range of 0.66 to 1.50, and the At, Ay, Tt, Ty, Wt, and Wy satisfy the following formula (1-1).

[0015] 316.5 ≤ Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100) ≤ 550.0 … (1-1).

[0016] By having the At, Ay, Tt, Ty, Wt, and Wy of the inorganic fiber fabric for building membrane materials of the present application in the above ranges and satisfying the formula (1-1), it is possible to provide an inorganic fiber fabric for building membrane materials having excellent heat damage resistance, excellent weaving properties, and high applicability to building membrane materials.

[0017] Here, the inorganic fiber fabric for building membrane materials having excellent heat damage resistance means that a test sample on which a 10-kg plummet with a diameter of 100 mm is placed is set in a muffle furnace, the temperature in the furnace is raised to 800°C in a manner that the temperature in the furnace becomes the standard heating temperature curve of ISO834, and after the temperature is lowered for a time that is three times the time taken to raise the temperature, the test sample is not damaged. In addition, the inorganic fiber fabric for building membrane materials having excellent weaving properties means that no yarn slackening, fuzzing, or cutting occurs when warping and weft weaving are performed. In addition, the inorganic fiber fabric for building membrane materials having high applicability to building membrane materials means that when a test piece cut to a width of 25 mm and a length of 150 mm is produced and evaluated in accordance with the tensile test of JIS (Japanese Industrial Standards) L 1096:2010, the tensile strength in the longitudinal direction and the transverse direction are each 2000 N / 25 mm or more.

[0018] In addition, the inorganic fiber fabric for building membrane materials of the present application is preferably one in which the At, Ay, Tt, Ty, Wt, and Wy satisfy the following formula (1-2).

[0019] 346.0 ≤ Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100) ≤ 464.0 (1-2).

[0020] By causing the At, Ay, Tt, Ty, Wt, and Wy to satisfy the formula (1-2), the inorganic fiber fabric for a building membrane material of the present application can have more excellent heat damage resistance and more excellent weaving property and higher building membrane material applicability.

[0021] Here, the inorganic fiber fabric for a building membrane material having more excellent heat damage resistance means that a test piece on which a 10 kg, 100 mm diameter weight is placed is set in a muffle furnace, the temperature in the furnace is raised to 800°C in a manner that the temperature in the furnace becomes the standard heating temperature curve of ISO834, and after the temperature is lowered for a time that is three times the time taken to raise the temperature, the test piece is not damaged; when a test piece cut to a width of 25 mm and a length of 150 mm is produced and evaluated according to the tensile test of JIS L 1096:2010, the tensile strength in the longitudinal direction and the transverse direction are each 450 N / 25 mm or more. In addition, the inorganic fiber fabric for a building membrane material having higher applicability to a building membrane material means that when a test piece cut to a width of 25 mm and a length of 150 mm is produced and evaluated according to the tensile test of JIS L 1096:2010, the tensile strength in the longitudinal direction and the transverse direction are each 3000 N / 25 mm or more.

[0022] In addition, the inorganic fiber fabric for a building membrane material of the present application is more preferably that the At, Ay, Tt, Ty, Wt, and Wy satisfy the following formula (2-1),

[0023] 316.5 ≤ (Tt / Ty) {Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100)} ≤ 550.0 (2-1).

[0024] By causing the At, Ay, Tt, Ty, Wt, and Wy to satisfy the formula (2-1), the inorganic fiber fabric for a building membrane material of the present application can have excellent heat damage resistance and excellent weaving property and high applicability to a building membrane material.

[0025] In addition, the inorganic fiber fabric for a building membrane material of the present application is more preferably that the At, Ay, Tt, Ty, Wt, and Wy satisfy the following formula (2-1),

[0026] 346.0 ≤ (Tt / Ty) {Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100) ≤ 464.0 … (2-2).

[0027] By satisfying the At, Ay, Tt, Ty, Wt, and Wy with the formula (2-2), the inorganic fiber fabric for a building membrane material of the present application can have more excellent heat damage resistance, more excellent weaving property, and higher building membrane material applicability.

[0028] Further, the building membrane material of the present application is characterized by comprising any one of the above inorganic fiber fabric for a building membrane material and a coating resin coating both surfaces of the inorganic fiber fabric for a building membrane material. DETAILED DESCRIPTION

[0029] Next, the embodiments of the present application are explained in further detail.

[0030] In the inorganic fiber fabric for a building membrane material of the present embodiment, the average Al2O3 content rate At of the warp yarns constituting the above inorganic fiber fabric and the average Al2O3 content rate Ay of the weft yarns constituting the above inorganic fiber fabric are each in the range of 17.5 mass% or more, the mass per unit length Tt of the warp yarns constituting the above inorganic fiber fabric and the mass per unit length Ty of the weft yarns constituting the above inorganic fiber fabric are each in the range of 100 to 600 g / 1000 m, the weaving density Wt of the warp yarns constituting the above inorganic fiber fabric and the weaving density Wy of the weft yarns constituting the above inorganic fiber fabric are each in the range of 10.0 to 55.0 ends / 25 mm, the ratio (Tt / Ty) of the above Tt to the above Ty is in the range of 0.66 to 1.50, and the above At, Ay, Tt, Ty, Wt, and Wy satisfy the following formula (1-1).

[0031] 316.5 ≤ Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100) ≤ 550.0 … (1-1).

[0032] The average Al2O3 content At of the warp yarns constituting the inorganic fiber fabric and the average Al2O3 content Ay of the weft yarns constituting the inorganic fiber fabric can be obtained, for example, by the following method: in the case where the warp yarns are constituted by n kinds of inorganic fiber yarns having different Al2O3 contents being gathered together or twisted, the Al2O3 content (mass %) of the i-th inorganic fiber yarn is set as Ati, and the mass per unit length (g / 1000 m) thereof is set as Tti, and the average Al2O3 content of the warp yarns can be obtained by At = Σ Ati x Tti / Σ Tti (where i and n are integers of 1 or more, i ≤ n).

[0033] The mass percentage of the above At and Ay with respect to the total amount of the inorganic fiber yarns is preferably in the range of 17.5 to 35.0 mass %, more preferably in the range of 20.5 to 30.0 mass %, and further preferably in the range of 23.5 to 28.0 mass %.

[0034] The inorganic fiber yarns can contain, in addition to Al2O3, SiO2 in the range of 40.0 to 80.0 mass % with respect to the total amount of the inorganic fiber yarns, preferably SiO2 in the range of 50.0 to 75.0 mass %, more preferably SiO2 in the range of 60.0 to 70.0 mass %, further preferably SiO2 in the range of 61.0 to 69.0 mass %, and particularly preferably SiO2 in the range of 63.5 to 66.5 mass %. In addition, the inorganic fiber yarns can contain CaO and MgO in the range of 5.0 to 20.0 mass % in total, preferably in the range of 7.5 to 15.0 mass %, and more preferably in the range of 8.5 to 11.5 mass %.

[0035] The content of each component contained in the inorganic fiber yarns can be measured using a wavelength dispersive fluorescent X-ray analysis device.

[0036] The following method shown below can be used as the measurement method. First, the inorganic fiber yarn is placed in a platinum crucible. Here, in the case where organic matter is attached to the surface of the inorganic fiber yarn or in the case where the inorganic fiber yarn is contained in the resin, the inorganic fiber yarn is used after the organic matter is removed by, for example, heating in a muffle furnace at 300 to 650°C for about 0.5 to 24 hours or the like. Next, the inorganic fiber yarn in the platinum crucible is placed in an electric furnace and is kept at a temperature of 1650°C for 6 hours while being stirred to be melted, thereby obtaining a homogeneous melt. Next, the obtained melt is poured onto a carbon plate to be made into a crushed glass, which is then pulverized to be powdered to be made into a powder for measurement. The powder for measurement is molded into a disc shape by a press, and then quantitative analysis is performed using a wavelength dispersion type fluorescent X-ray analysis device. The quantitative analysis using the wavelength dispersion type fluorescent X-ray analysis device can be specifically performed by the following method: a standard curve sample is prepared based on the results measured by the fundamental parameter method, and analysis is performed by the standard curve method. Note that the content of each component in the standard curve sample can be quantitatively analyzed by an ICP emission spectrometer. These quantitative analysis results are converted into the amount of oxide, the content and the total amount of each component are calculated, and the content of each component is calculated from these values.

[0037] The mass per unit length of the warp yarns Tt and the mass per unit length of the weft yarns Ty of the inorganic fiber fabric are preferably in the range of 136 to 540 g / 1000 m, more preferably in the range of 180 to 450 g / 1000 m, further preferably in the range of 226 to 425 g / 1000 m, particularly preferably in the range of 250 to 420 g / 1000 m, and most preferably in the range of 256 to 350 g / 1000 m.

[0038] Here, the Tt or Ty can be measured according to JIS R 3420:2013. Note that in the case where organic matter is attached to the inorganic fiber fabric or in the case where the inorganic fiber fabric is contained in the building membrane material, the Tt or Ty can be measured using the inorganic fiber fabric after the organic matter is removed by, for example, heating in a muffle furnace at 300 to 650°C for about 0.5 to 24 hours or the like. In the case where the inorganic fiber fabric is a glass fiber fabric and is contained in the building membrane material, the mass of the warp yarns and the weft yarns can be calculated based on the fiber diameter of the glass filaments constituting the warp yarns and the weft yarns, the number of bundles of the glass filaments, and the specific gravity of the glass constituting the warp yarns and the weft yarns, which are measured by the method described later. Note that the specific gravity of the glass constituting the warp yarns and the weft yarns can be calculated by the following method: the composition of the glass constituting the glass fiber fabric is measured, a glass batch is prepared so as to have the same composition, the glass batch is melted and cooled to prepare a glass block, and the specific gravity of the glass block is measured.

[0039] The specific gravity of the above glass can be measured, for example, by the following method. First, the building membrane material containing the glass fiber fabric is heated, for example, in a muffle furnace at 300 to 650°C for about 0.5 to 24 hours or the like to decompose the organic matter. Next, the remaining glass fiber is put into a platinum crucible and is melted in an electric furnace at a temperature of 1650°C for 6 hours while stirring, whereby a homogeneous molten glass is obtained. Next, the platinum crucible containing the molten glass is taken out of the electric furnace and the molten glass is cooled. Next, after knocking out the molten glass from the platinum crucible, the glass is heated at a strain removal temperature (660 to 780°C) for 2 hours to remove the strain, and is cooled to room temperature (20 to 25°C) over 8 hours, whereby a glass block is obtained.

[0040] The weight A of the glass block in air (density pi) and the weight B in ion-exchange water (density po) as a displacement liquid are measured by a specific gravity meter, and the specific gravity (p) is calculated according to the following formula (a), whereby the density of the glass fiber can be measured.

[0041] p = pi + A (po - pi) / (A - B) (a)

[0042] The weft density Wt of the above inorganic fiber fabric is preferably in the range of 12.0 to 36.0 ends / 25 mm, more preferably in the range of 15.0 to 30.0 ends / 25 mm, further preferably in the range of 17.0 to 25.0 ends / 25 mm, particularly preferably in the range of 18.3 to 24.7 ends / 25 mm. In addition, the weft density Wy of the above inorganic fiber fabric is preferably in the range of 12.0 to 36.0 ends / 25 mm, more preferably in the range of 15.0 to 30.0 ends / 25 mm, further preferably in the range of 17.0 to 25.0 ends / 25 mm, particularly preferably in the range of 18.3 to 24.7 ends / 25 mm, most preferably in the range of 18.4 to 19.9 ends / 25 mm.

[0043] Here, the above Wt or Wy can be calculated by counting the number of ends of the weft or weft per 25 mm width of the above inorganic fiber fabric using a fabric resolution microscope according to JIS R 3420:2013. Note that in the case where the above inorganic fiber fabric is attached with organic matter or in the case where the above inorganic fiber fabric is contained in the building membrane material, the organic matter is removed by heating, for example, in a muffle furnace at 300 to 650°C for about 0.5 to 24 hours or the like, and then the above Wt or Wy can be measured using the inorganic fiber fabric.

[0044] The ratio of Tt to Ty (Tt / Ty) is preferably in the range of 0.75 to 1.34, more preferably in the range of 0.80 to 1.25, and further preferably in the range of 0.90 to 1.12.

[0045] In the above formula (1-1), the larger the value of Wt or Wy, the more the heat damage resistance of the inorganic fiber fabric for building membrane materials is improved, but there is a tendency that the weaving property of the inorganic fiber fabric for building membrane materials is reduced. In addition, the larger the value of Tt or Ty, the more the heat damage resistance is improved, but there is a tendency that the weaving property is reduced. On the other hand, there is a tendency that the smaller the value of At or Ay, the more the weaving property is improved. It is inferred that the above formula (1-1) comprehensively reflects the above tendencies, and embodies the balance between the heat damage resistance and the weaving property of the inorganic fiber fabric for building membrane materials.

[0046] The inorganic fiber yarn constituting the inorganic fiber fabric for building membrane materials of the present embodiment is preferably a cabled yarn twisted by 2 to 120 of the same inorganic fiber yarn, more preferably a cabled yarn twisted by 5 to 90 of the same inorganic fiber yarn, further preferably a cabled yarn twisted by 8 to 50 of the same inorganic fiber yarn, and particularly preferably a cabled yarn twisted by 10 to 20 of the same inorganic fiber yarn.

[0047] In addition, the inorganic fiber yarn constituting the inorganic fiber fabric is preferably not subjected to bulk processing.

[0048] As the inorganic fiber yarn constituting the inorganic fiber fabric for building membrane materials of the present embodiment, there are, for example, a glass fiber yarn, a glass fiber cabled yarn (a cabled yarn twisted by the same glass fiber yarn), a ceramic fiber yarn, a ceramic fiber cabled yarn, a cabled yarn of a plurality of glass fiber yarns, a cabled yarn of a plurality of ceramic fiber yarns, a cabled yarn of a glass fiber yarn and a ceramic fiber yarn, a cabled yarn of a glass fiber yarn and an alumina fiber yarn, a cabled yarn of a ceramic fiber yarn and an alumina fiber yarn, and the like. However, in view of the weaving property, the inorganic fiber fabric for building membrane materials of the present embodiment is preferably a glass fiber yarn or a glass fiber cabled yarn, and from the viewpoint of having excellent tensile strength and high applicability to the building membrane material use, a glass fiber cabled yarn is more preferable.

[0049] In the case where the inorganic fiber yarn constituting the inorganic fiber fabric is a glass fiber yarn or a glass fiber cabled yarn, the filament diameter of the glass filaments constituting the glass fiber yarn or the glass fiber cabled yarn is, for example, in the range of 2.5 to 21.0 μm, and is preferably in the range of 3.0 to 13.0 μm, and more preferably in the range of 3.0 to 9.0 μm.

[0050] In addition, in the case where the inorganic fiber yarn constituting the inorganic fiber fabric is a glass fiber yarn or a glass fiber cabled yarn, the number of filaments of the glass filaments constituting the glass fiber yarn or the glass fiber cabled yarn is, for example, in the range of 150 to 20,000, and is preferably in the range of 600 to 18,000, more preferably in the range of 1,000 to 15,000, further preferably in the range of 1,500 to 10,000, particularly preferably in the range of 1,800 to 9,000, especially preferably in the range of 2,000 to 8,000, and most preferably in the range of 2,200 to 7,500.

[0051] The fiber diameter of the glass filaments can be obtained, for example, by first polishing a cross section of the building membrane material including the inorganic fiber fabric, then observing the cross section of the building membrane material using an electron microscope, and measuring the diameters of the glass filaments of 100 or more glass filaments exposed on the cross section, and obtaining the average of these diameters as the fiber diameter. In addition, the number of bundles of the glass filaments can be obtained by counting the number of filaments constituting the warp yarn and the weft yarn exposed on the cross section.

[0052] The mass per unit area of the inorganic fiber fabric for a building membrane material of the present embodiment is, for example, in the range of 310 to 750 g / m 2 , and is preferably in the range of 410 to 650 g / m 2 , further preferably in the range of 420 to 550 g / m 2 , particularly preferably in the range of 425 to 490 g / m 2 .

[0053] Here, the mass per unit area of the inorganic fiber fabric can be obtained by, for example, using a balance according to JIS R 3420:2013, measuring the mass of the inorganic fiber fabric cut to 200 mm x 200 mm three times, converting each to the mass per 1 m 2 , and obtaining the average. Note that in the case where organic matter is attached to the surface of the inorganic fiber fabric or in the case where the inorganic fiber fabric is included in the building membrane material, for example, by heating in a muffle furnace at 300 to 650°C for 0.5 to 24 hours or the like, the organic matter is removed, and the inorganic fiber fabric from which the organic matter has been removed is used, and the mass per unit area can be measured.

[0054] As the fabric organization of the inorganic fiber fabric, plain weave, twill weave, satin weave, diagonal weave, and raised plain weave (Japanese: nade weave) can be given.

[0055] The above At, Ay, Tt, Ty, Wt, and Wy of the inorganic fiber fabric for building membrane materials of the present embodiment are preferably satisfied with the following formula (1-2), and more preferably satisfied with the following formula (1-3).

[0056] 346.0 ≤ Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100) ≤ 464.0 … (1-2).

[0057] 358.0 ≤ Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100) ≤ 418.0 … (1-3).

[0058] Further, the inorganic fiber fabric for building membrane materials of the present embodiment is further preferably that the above At, Ay, Tt, Ty, Wt, and Wy satisfy the following formula (2-1), particularly preferably satisfy the following formula (2-2), and most preferably satisfy the following formula (2-3).

[0059] 316.5 ≤ (Tt / Ty) {Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100)} ≤ 550.0 … (2-1).

[0060] 346.0 ≤ (Tt / Ty) {Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100)} ≤ 464.0 … (2-2).

[0061] 358.0 ≤ (Tt / Ty) {Wt 1 / 3 × Tt 1 / 2 / (At / 100) + Wy 1 / 3 × Ty 1 / 2 / (Ay / 100)} ≤ 418.0 … (2-3).

[0062] In the above formula (2-1), the closer Tt / Ty is to 1.00, the more the inorganic fiber fabric for building membrane materials tends to improve the building membrane material applicability. It can be inferred that the above formula (2-1) integrates the tendencies indicated by Tt, Ty, Wt, Wy, At, and Ay and the tendency indicated by Tt / Ty, and embodies the balance of the heat resistance, the weaving property, and the building membrane material applicability of the inorganic fiber fabric for building membrane materials.

[0063] On the surface of the inorganic fiber fabric for building membrane materials of the present embodiment, a surface treatment agent such as a silane coupling agent, starch, lubricant, or the like can be attached, and the surface treatment agent is 0 to 0.3 to 2.5 mass% relative to the mass of the inorganic fiber fabric for building membrane materials of the present embodiment containing the surface treatment agent.

[0064] As the silane coupling agent, amino silane, chlorosilane, epoxy silane, mercapto silane, vinyl silane, acrylic silane, cationic silane can be given.

[0065] As the amino silane, γ-aminopropyltriethoxysilane, N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane, N-β-(aminoethyl)-N'-β-(aminoethyl)-γ-aminopropyltrimethoxysilane, γ-anilinopropyltrimethoxysilane, and the like can be given.

[0066] As the chlorosilane, γ-chloropropyltrimethoxysilane, and the like can be given.

[0067] As the epoxy silane, γ-glycidoxypropyltrimethoxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, and the like can be given.

[0068] As the mercapto silane, γ-mercaptopropyltrimethoxysilane, and the like can be given.

[0069] As the vinyl silane, vinyltrimethoxysilane, N-β-(N-vinylbenzylaminoethyl)-γ-aminopropyltrimethoxysilane, and the like can be given.

[0070] As the acrylic silane, γ-methacryloyloxypropyltrimethoxysilane, and the like can be given.

[0071] As the cationic silane, N-(vinylbenzyl)-2-aminoethyl-3-aminopropyltrimethoxysilane hydrochloride, N-phenyl-3-aminopropyltrimethoxysilane hydrochloride, and the like can be given.

[0072] The above silane coupling agent can be used alone with these compounds, or two or more of the above compounds can be used in combination.

[0073] As the starch, corn starch, potato starch, rice starch, tapioca starch, wheat starch, sweet potato starch, high-amylose corn starch, sago starch, starches subjected to etherification, esterification, grafting, crosslinking, and the like can be given. The above-mentioned starches can be used alone or in combination of two or more of the above-mentioned compounds.

[0074] As the lubricant, modified silicone oil, animal oil and hydrogenated additives thereof, vegetable oil and hydrogenated additives thereof, animal wax, vegetable wax, mineral wax, condensates of higher saturated fatty acid and higher saturated alcohol, polyethylene imine, polyalkyl polyamine alkyl amide derivative, fatty acid amide, quaternary ammonium salt can be given.

[0075] As the animal oil, beef tallow and the like can be given.

[0076] As the vegetable oil, soybean oil, coconut oil, rapeseed oil, palm oil, castor oil, and the like can be given.

[0077] As the animal wax, beeswax, lanolin, and the like can be given.

[0078] As the vegetable wax, candelilla wax, carnauba wax, and the like can be given.

[0079] As the mineral wax, paraffin wax, montan wax, and the like can be given.

[0080] As the condensate of higher saturated fatty acid and higher saturated alcohol, lauryl stearate, and the like can be given.

[0081] As the fatty acid amide, polyethylene polyamine such as diethylene triamine, triethylene tetramine, tetraethylene pentamine, and fatty acid such as lauric acid, myristic acid, palmitic acid, stearic acid, and the like can be given.

[0082] As the quaternary ammonium salt, alkyl trimethyl ammonium salt such as lauryl trimethyl ammonium chloride, and the like can be given.

[0083] The above-mentioned lubricant can be used alone or in combination of two or more of the above-mentioned lubricants.

[0084] The building membrane material of the present embodiment contains any one of the above-mentioned inorganic fiber fabric for building membrane material, and a coating resin that coats both surfaces of the inorganic fiber fabric for building membrane material.

[0085] As the above-mentioned coating resin, a fluorine-based resin or a silicone resin can be given. As the above-mentioned fluorine-based resin, polytetrafluoroethylene (PTFE), perfluoroalkoxy alkane (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-ethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), polychlorotrifluoroethylene (PCTFE), tetrafluoroethylene-perfluorodioxole polymer (TFE / PDD), polyvinyl fluoride (PVF), and the like can be given.

[0086] The above-mentioned coating resin can be a resin composition containing an additive such as a coating agent, in addition to the resin. Also, a part of the above-mentioned coating resin can be impregnated in the above-mentioned inorganic fiber fabric.

[0087] As the use of the building membrane material of the present embodiment, for example, a membrane ceiling, a tent warehouse, a roof of a fire-resistant building can be given.

[0088] Next, an example and a comparative example of the present application are shown.

[0089] Example

[0090] [Example 1]

[0091] The inorganic fiber fabric of Example 1 was produced in the following manner. The inorganic fiber fabric was produced by weaving a glass fiber twisted yarn as a warp yarn and a weft yarn in a manner that the warp yarn weaving density became 24.6 threads / 25 mm and the weft yarn weaving density became 19.7 threads / 25 mm, and then weaving a plain weave. The glass fiber twisted yarn had a composition containing Al203at a content rate of 25.0 mass%, Si02at a content rate of 65.0 mass%, and MgO and CaO at a total content rate of 10.0 mass%, and was composed of 2400 glass filaments having a filament diameter of 7.4 μm, and had a mass of 270 g / 1000 m.

[0092] [Example 2]

[0093] The inorganic fiber fabric of Example 2 was produced in the following manner. The inorganic fiber fabric was produced by weaving a glass fiber twisted yarn as a warp yarn and a weft yarn in a manner that the warp yarn weaving density became 18.5 threads / 25 mm and the weft yarn weaving density became 19.0 threads / 25 mm, and then weaving a plain weave. The glass fiber twisted yarn had a composition containing Al203at a content rate of 25.0 mass%, Si02at a content rate of 65.0 mass%, and MgO and CaO at a total content rate of 10.0 mass%, and was composed of 3600 glass filaments having a filament diameter of 7.4 μm, and had a mass of 405 g / 1000 m.

[0094] [Example 3]

[0095] The inorganic fiber fabric of Example 3 was produced in the following manner. Plain weave was carried out in such a manner that the warp yarn and the weft yarn were made of glass fiber twisted yarn so that the warp density became 24.5 threads / 25 mm and the weft density became 21.0 threads / 25 mm. The glass fiber twisted yarn had a composition containing Al203at a rate of 25.0 mass%, Si02at a rate of 65.0 mass%, and MgO and CaO at a total rate of 10.0 mass%, and was composed of 1800 glass filaments each having a filament diameter of 7.4 μm, and had a mass of 202 g / 1000 m.

[0096] [Example 4]

[0097] The inorganic fiber fabric of Example 4 was produced in the following manner. Plain weave was carried out in such a manner that the warp yarn and the weft yarn were made of a twisted yarn of a first glass fiber twisted yarn and a second glass fiber twisted yarn so that the warp density became 18.5 threads / 25 mm and the weft density became 19.0 threads / 25 mm. The first glass fiber twisted yarn had a composition containing Al203at a rate of 25.0 mass%, Si02at a rate of 65.0 mass%, and MgO and CaO at a total rate of 10.0 mass%, and was composed of 2400 glass filaments each having a filament diameter of 7.4 μm, and had a mass of 270 g / 1000 m. The second glass fiber twisted yarn had a composition containing Al203at a rate of 14.0 mass%, Si02at a rate of 54.5 mass%, MgO and CaO at a total rate of 23.5 mass%, and other components at a total rate of 8.0 mass%, and was composed of 1200 glass filaments each having a filament diameter of 7.4 μm, and had a mass of 135 g / 1000 m.

[0098] [Comparative Example 1]

[0099] The inorganic fiber fabric of Comparative Example 1 was produced in the following manner. Plain weave was carried out in such a manner that the warp yarn and the weft yarn were made of alumina fiber yarn so that the warp density became 19.8 threads / 25 mm and the weft density became 16.8 threads / 25 mm. The alumina fiber yarn had a composition containing Al203at a rate of 72.0 mass% and Si02at a rate of 28.0 mass%, and had a mass of 100 g / 1000 m.

[0100] [Comparative Example 2]

[0101] The inorganic fiber fabric of Comparative Example 2 was produced in the following manner. Plain weave was performed using an alumina fiber yarn for the warp and weft so that the warp density was 19.8 ends / 25 mm and the weft density was 16.8 ends / 25 mm, the alumina fiber yarn having a composition containing 62.5 mass% of Al2O3, 24.5 mass% of SiO2, and 13.0 mass% of the total of other components, and having a mass of 100 g / 1000 m.

[0102] [Comparative Example 3]

[0103] The inorganic fiber fabric of Comparative Example 3 was produced in the following manner. Plain weave was performed using a cabled yarn of an alumina fiber cabled yarn and a glass fiber cabled yarn for the warp and weft so that the warp density was 17.5 ends / 25 mm and the weft density was 16.5 ends / 25 mm, to produce the above inorganic fiber fabric. The alumina fiber cabled yarn had a composition containing 72.0 mass% of Al2O3 and 28.0 mass% of SiO2, and had a mass of 300 g / 1000 m; the glass fiber cabled yarn had a glass composition containing 14.0 mass% of Al2O3, 54.5 mass% of SiO2, 23.5 mass% of the total of MgO and CaO, and 8.0 mass% of the total of other components, and was composed of 1200 glass filaments having a filament diameter of 7.4 μm, and had a mass of 135 g / 1000 m.

[0104] [Comparative Example 4]

[0105] The inorganic fiber fabric of Comparative Example 4 was produced in the following manner. Plain weave was performed using a cabled yarn of an alumina fiber cabled yarn and a glass fiber cabled yarn for the warp and weft so that the warp density was 17.5 ends / 25 mm and the weft density was 16.5 ends / 25 mm, to produce the above inorganic fiber fabric. The alumina fiber cabled yarn had a composition containing 62.5 mass% of Al2O3, 24.5 mass% of SiO2, and 13.0 mass% of the total of other components, and had a mass of 300 g / 1000 m; the glass fiber cabled yarn had a glass composition containing 14.0 mass% of Al2O3, 54.5 mass% of SiO2, 23.5 mass% of the total of MgO and CaO, and 8.0 mass% of the total of other components, and was composed of 1200 glass filaments having a filament diameter of 7.4 μm, and had a mass of 135 g / 1000 m.

[0106] [Comparative Example 5]

[0107] The inorganic fiber fabric of Comparative Example 5 was produced in the following manner. A first glass fiber ply yarn and a second glass fiber ply yarn were used to make the warp and weft yarns to weave a plain weave such that the warp yarn density was 18.5 ends / 25 mm and the weft yarn density was 19.0 ends / 25 mm, thereby producing the inorganic fiber fabric. The first glass fiber ply yarn had a composition containing 25.0 mass% Al203, 65.0 mass% Si02, and 10.0 mass% in total of MgO and CaO, and was composed of 1200 glass filaments having a filament diameter of 7.4 μm and had a mass of 135 g / 1000 m. The second glass fiber ply yarn had a composition containing 14.0 mass% Al203, 54.5 mass% Si02, and 23.5 mass% in total of MgO and CaO, and 8.0 mass% in total of other components, and was composed of 2400 glass filaments having a filament diameter of 7.4 μm and had a mass of 270 g / 1000 m.

[0108] [Comparative Example 6]

[0109] The inorganic fiber fabric of Comparative Example 6 was produced in the following manner. A glass fiber ply yarn was used to make the warp and weft yarns to weave a plain weave such that the warp yarn density was 19.0 ends / 25 mm and the weft yarn density was 18.5 ends / 25 mm. The glass fiber ply yarn had a composition containing 25.0 mass% Al203, 65.0 mass% Si02, and 10.0 mass% in total of MgO and CaO, and was composed of 1200 glass filaments having a filament diameter of 7.4 μm and had a mass of 135 g / 1000 m.

[0110] [Comparative Example 7]

[0111] The inorganic fiber fabric of Comparative Example 7 was produced in the following manner. A glass fiber ply yarn having a composition containing Al203at a content rate of 25.0 mass%, Si02at a content rate of 65.0 mass%, MgO and CaO at a total content rate of 10.0 mass%, and other components at a total content rate of 8.0 mass%, which was composed of 1200 glass filaments each having a filament diameter of 7.4 μm and had a mass of 135 g / 1000 m, was used as the warp yarn, and another glass fiber ply yarn having a composition containing Al203at a content rate of 25.0 mass%, Si02at a content rate of 65.0 mass%, MgO and CaO at a total content rate of 10.0 mass%, which was composed of 3600 glass filaments each having a filament diameter of 7.4 μm and had a mass of 405 g / 1000 m, was used as the weft yarn. Plain weaving was performed so that the warp density was 49.2 ends / 25 mm and the weft density was 19.7 ends / 25 mm, to produce the inorganic fiber fabric.

[0112] [Comparative Example 8]

[0113] The inorganic fiber fabric of Comparative Example 8 was produced in the following manner. A glass fiber ply yarn was used as the warp yarn and the weft yarn, and plain weaving was performed so that the warp density was 19.8 ends / 25 mm and the weft density was 19.7 ends / 25 mm, to produce the inorganic fiber fabric. The glass fiber ply yarn had a composition containing Al203at a content rate of 14.0 mass%, Si02at a content rate of 54.5 mass%, MgO and CaO at a total content rate of 23.5 mass%, and other components at a total content rate of 8.0 mass%, was composed of 1780 glass filaments each having a filament diameter of 7.4 μm, and had a mass of 200 g / 1000 m.

[0114] The values of the mass per unit area, Wt 1 / 3 x Tt 1 / 2 / (At / 100) + Wy 1 / 3 x Ty 1 / 2 / (Ay / 100) and the values of (Tt / Ty) {Wt 1 / 3 x Tt 1 / 2 / (At / 100) + Wy 1 / 3 x Ty 1 / 2 / (Ay / 100) of the inorganic fiber fabrics of each of the examples and each of the comparative examples are shown in Table 1.

[0115] In addition, the heat resistance, the building membrane material applicability, and the weaving property of the inorganic fiber fabrics of each of the examples and each of the comparative examples were evaluated in the following manner. The results of Examples 1 to 4 are shown in Table 1, the results of Comparative Examples 1 to 4 are shown in Table 2, and the results of Comparative Examples 5 to 8 are shown in Table 3.

[0116] Heat resistance

[0117] A test sample on which a 10 kg weight having a diameter of 100 mm was placed was set in a muffle furnace, and the temperature in the furnace was increased to 800°C in a manner that the temperature in the furnace became a standard heating temperature curve of ISO834, and after the temperature was decreased for a time of 3 times the time taken for the temperature to increase, the test sample was taken out, and it was confirmed whether or not the test sample was damaged. Next, a test piece cut to a width of 25 mm and a length of 150 mm was produced, and evaluation was performed in the longitudinal direction and the transverse direction according to the tensile test of JIS L 1096:2010. A case where there was no damage and the tensile strength was 450 N / 25 mm or more was evaluated as "A"; a case where there was no damage and the tensile strength was less than 450 N / 25 mm was evaluated as "B"; and a case where there was damage was evaluated as "C".

[0118] 〔Building membrane material applicability〕

[0119] A test piece cut to a width of 25 mm and a length of 150 mm was produced, and evaluation was performed in the longitudinal direction and the transverse direction according to the tensile test of JIS L 1096:2010. A case where the tensile strength was 3000 N / 25 mm or more was evaluated as "A", a case where the tensile strength was 2000 N / 25 mm or more and less than 3000 N / 25 mm was evaluated as "B", and a case where the tensile strength was less than 2000 N / 25 mm was evaluated as "C".

[0120] 〔Weavability〕

[0121] When warping and weft weaving were performed, a case where there was no occurrence of yarn slackening, fuzzing, or cutting was evaluated as "OK", and a case where there was an occurrence of yarn slackening, fuzzing, or cutting was evaluated as "NG".

[0122] [Table 1]

[0123]

[0124] [Table 2]

[0125]

[0126] [Table 3]

[0127]

[0128] As shown in Table 1, the inorganic fiber fabric according to Embodiments 1 to 4 had excellent heat resistance, excellent weavability, and high applicability to building membrane materials.

[0129] On the other hand, as is apparent from Table 2, in the inorganic fiber fabric according to Comparative Example 1 and Comparative Example 2, i.e., in which the average Al2O3 content At of the warp yarns constituting the inorganic fiber fabric and the average Al2O3 content Ay of the weft yarns constituting the inorganic fiber fabric are higher than the values in Examples 1 to 4, and the value of Wt 1 / 3 x Tt 1 / 2 / (At / 100) + Wy 1 / 3 x Ty 1 / 2 / (Ay / 100) is less than 316.5, the building membrane material applicability is low, and the weavability is poor.

[0130] Further, as is apparent, in the inorganic fiber fabric according to Comparative Example 3 and Comparative Example 4, i.e., in which the average Al2O3 content At of the warp yarns constituting the inorganic fiber fabric and the average Al2O3 content Ay of the weft yarns constituting the inorganic fiber fabric are lower than the values in Comparative Example 1 and Comparative Example 2, and the value of Wt 1 / 3 x Tt 1 / 2 / (At / 100) + Wy 1 / 3 x Ty 1 / 2 / (Ay / 100) is less than 316.5, the weavability is poor.

[0131] Further, as is apparent from Table 3, in the inorganic fiber fabric according to Comparative Example 5, in which the value of Wt 1 / 3 x Tt 1 / 2 / (At / 100) + Wy 1 / 3 x Ty 1 / 2 / (Ay / 100) exceeds 550.0, the heat resistance to breakage is low; and in the inorganic fiber fabric according to Comparative Example 6, in which the value of Wt 1 / 3 x Tt 1 / 2 / (At / 100) + Wy 1 / 3 x Ty 1 / 2 / (Ay / 100) is less than 316.5 and is lower than in the inorganic fiber fabric according to Comparative Example 3 and Comparative Example 4, the heat resistance to breakage and the building membrane material applicability are low.

[0132] Further, as is apparent, in the inorganic fiber fabric according to Comparative Example 7, in which the ratio (Tt / Ty) of the above Tt to the above Ty is less than 0.66, the weavability is poor; and further, as is apparent, in the inorganic fiber fabric according to Comparative Example 8, in which the average Al2O3 content At of the warp yarns constituting the inorganic fiber fabric and the average Al2O3 content Ay of the weft yarns constituting the inorganic fiber fabric are less than 17.0 mass%, the heat resistance to breakage is low.

Claims

1. An inorganic fiber fabric for architectural membrane materials, characterized in that, The inorganic fiber yarns constituting the inorganic fiber fabric have not undergone bulking processing. The average Al2O3 content At of the warp yarns constituting the inorganic fiber fabric and the average Al2O3 content Ay of the weft yarns constituting the inorganic fiber fabric are both in the range of 20.5% by mass or more. The mass Tt per unit length of the warp yarn constituting the inorganic fiber fabric and the mass Ty per unit length of the weft yarn constituting the inorganic fiber fabric are both in the range of 100 to 600 g / 1000 m. The warp density Wt and the weft density Wy of the inorganic fiber fabric are respectively in the range of 10.0 to 55.0 yarns / 25mm. The ratio of Tt to Ty, Tt / Ty, is in the range of 0.66 to 1.

50. The given At, Ay, Tt, Ty, Wt, and Wy satisfy the following equation (1-1): 346.0≤Wt 1 / 3 ×Tt 1 / 2 / (At / 100)+Wy 1 / 3 ×Ty 1 / 2 / (Ay / 100)≤550.0…(1-1)。 2. The inorganic fiber fabric for architectural membrane materials according to claim 1, characterized in that, The given At, Ay, Tt, Ty, Wt, and Wy satisfy the following equation (1-2): 346.0≤Wt 1 / 3 ×Tt 1 / 2 / (At / 100)+Wy 1 / 3 ×Ty 1 / 2 / (Ay / 100)≤464.0…(1-2)。 3. The inorganic fiber fabric for architectural membrane materials according to claim 1 or 2, characterized in that, The given At, Ay, Tt, Ty, Wt, and Wy satisfy the following equation (2-1): 316.5≤(Tt / Ty){Wt 1 / 3 ×Tt 1 / 2 / (At / 100)+Wy 1 / 3 ×You 1 / 2 / (Ay / 100)}≤550.0…(2-1)。 4. The inorganic fiber fabric for architectural membrane materials according to claim 1 or 2, characterized in that, The given At, Ay, Tt, Ty, Wt, and Wy satisfy the following equation (2-2): 346.0≤(Tt / Ty){Wt 1 / 3 ×Tt 1 / 2 / (At / 100)+Wy 1 / 3 ×You 1 / 2 / (Ay / 100)}≤464.0…(2-2)。 5. A building membrane material, characterized in that, The invention comprises an inorganic fiber fabric for building membrane material according to any one of claims 1 to 4, and a covering resin covering both sides of the inorganic fiber fabric for building membrane material.

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