JP2012102459A - Fireproof and soundproof structure for wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof and soundproof structure for a wall, which is excellent in fire resistance efficiency, is capable of preventing dew condensation on a back surface of a steel plate exterior material and preventing the generation of rust due to infiltration of rainwater from an end part of the steel plate exterior material, is excellent in sound insulation, and is light in weight.SOLUTION: In the fireproof and soundproof structure for a wall, a plurality of recessed and projected steel plate exterior materials 11 are arranged side by side with respective ends 12, 13 overlapped on the front and back, and a sheet-like inorganic fiber heat insulation material 20 is bent along recesses and projection and stuck to the back surface of the steel plate exterior material 11. The inorganic fiber heat insulation material 20 is not interposed between the overlapped ends 12, 13 of the steel plate exterior materials 11, a plaster board 15 with waterproof paper stuck to at least one surface thereof is in abutment with the back side of the inorganic fiber heat insulation material 20, and the steel plate exterior material 11, the inorganic fiber heat insulation material 20 and the plaster board 15 are fixed to a steel column or furring strip 18 by driving a fixing machine screw 19 from the side of the steel plate exterior material 11.

Description

  The present invention relates to a wall structure such as an outer wall or a boundary wall of a building such as a house, a factory, or a warehouse.

  The outer walls of buildings such as houses and walls such as the boundary walls are required to have fireproof performance to stop the spread of fire during a fire and soundproof performance to prevent noise from being transmitted from the outside. For this reason, various wall structures have been proposed.

For example, Patent Document 1 is configured by laminating and bonding a metal reinforcing plate provided with a convex portion and a surface plate having heat resistance performance such as a gypsum board, and between the metal reinforcing plate and the surface plate. A fireproof panel has been proposed in which the formed hollow portion is filled with a fiber assembly or the like.
Patent Document 2 proposes an outer wall structure in which a metal panel material containing an organic core material such as isocyanurate foam is fixed on the outdoor side surface of a gypsum board in which a metal plate such as a steel plate is bonded to the indoor side surface. Has been.
In Patent Document 3, a wall-inside hollow portion between a plaster board or other underlay plate is interposed between a thin steel plate with a heat-resistant sound-absorbing material such as glass wool stretched on both sides of a thin steel plate, and an upper plate is formed using staples. A fire and sound insulation partition wall fixed to an underboard has been proposed.

However, since the fireproof panel of Patent Document 1 is not filled with a fiber assembly or the like between the metal reinforcing plate other than the hollow portion and the surface plate, the metal reinforcing plate and the surface plate are in contact with each other except the hollow portion. Therefore, it is considered that the fireproof performance and soundproof performance are low.
The outer wall structure of Patent Document 2 is considered to have low fire resistance because the isocyanurate foam is carbonized at high temperatures.
The fireproof and sound insulation partition wall of Patent Document 3 uses staples to fix the upper plate to the lower plate, so that the upper plate is weakly fixed and cannot be used particularly for the outer wall.

JP 2004-36328 A JP 2004-3295 A JP-A-8-270115

  Therefore, the present invention has excellent fireproof performance, can prevent condensation on the back surface of the steel sheet exterior material, can prevent the occurrence of rust due to the intrusion of rainwater from the edge of the steel sheet exterior material, is excellent in soundproofing and lightweight wall An object is to provide a fireproof and soundproof structure.

  In order to solve the above-mentioned problem, the fireproof and soundproof structure for a wall according to the present invention has a plurality of uneven steel plate exterior materials arranged side by side with their end portions overlapped on the front and back, and on the back surface of the steel sheet exterior material. A sheet-like inorganic fiber heat insulating material is bent and stuck along the unevenness, and the inorganic fiber heat insulating material is not interposed between the overlapped ends of the steel sheet exterior material, and the inorganic fiber heat insulating material A plaster board with waterproof paper affixed to at least one side is in contact with the back side of the steel plate, and the steel plate exterior material, the inorganic fiber heat insulating material and the plaster board are driven from the steel column or body edge of the fixed screw to the steel plate exterior material side. Is stopped by.

  Moreover, since the soundproof performance of a low frequency band (for example, 500-1000 Hz) improves, it is preferable that the metal sound-absorption sheet | seat is inserted between the inorganic fiber heat insulating body and the plaster board.

  Here, the aspect of each element of this invention is illustrated below.

1. Steel plate exterior material Although it does not specifically limit as a steel plate used for a steel plate exterior material, A hot dip galvanized steel plate, a Galfan steel plate, a galvalume steel plate, an aluminized steel plate, a stainless steel plate, a vinyl chloride steel plate, a resin coated steel plate etc. can be illustrated. In the case of the outer wall, it is preferable to use a galvalume steel plate because of its high corrosion resistance, and it is more preferable to use a coating with a heat shielding or antifouling function. On the other hand, since it is inexpensive, it is preferable from the viewpoint of cost to use a hot-dip galvanized steel sheet.
Although the thickness of a steel plate is not specifically limited, It is preferable that it is 0.25-2.3 mm. If the thickness is less than 0.25 mm, the strength is small and easily deformed, and if it exceeds 2.3 mm, it becomes heavier and construction is difficult.
The shape of the unevenness of the steel sheet exterior material is not particularly limited, and examples thereof include a round wave shape, a square wave shape, and a rib shape.
The unevenness of the steel sheet exterior material may be applied before the inorganic fiber heat insulating material is adhered to the back surface, or may be applied after the inorganic fiber heat insulating material is adhered to the back surface.

2. Inorganic fiber heat insulating material The form of the inorganic fiber heat insulating material is not particularly limited, and examples thereof include a needle mat formed into a felt shape by needling processing or the like.
The bulk density of the inorganic fiber heat insulating material is not particularly limited, but is preferably 80 to 200 kg / m ³ because it is excellent in sound absorbing performance and heat insulating performance.
Although the thickness of an inorganic fiber heat insulating material is not specifically limited, It is preferable when performing the sticking process to a steel plate exterior material that it is 4-12 mm. More preferably, it is 4-6 mm. When it exceeds 6 mm, the repulsive force becomes large, and it may be difficult to adhere to the uneven steel sheet exterior material.
The inorganic fiber heat insulating material is not particularly limited, but may or may not contain organic fibers or organic substances other than fibrous materials. Moreover, the organic fiber nonwoven fabric may be attached or may not be attached. Moreover, the sealing process may be performed or may not be performed.
The inorganic fiber heat insulating material preferably has an organic substance content of 200 g / m ² or less per unit area, including the organic substance of the sticking material used for sticking to the steel sheet exterior material.

2-1. Inorganic fiber The inorganic fiber of the inorganic fiber heat insulating material is not particularly limited, and examples thereof include glass fiber, silica fiber, rock wool fiber, ceramic fiber, alumina fiber, and basalt fiber. Glass fibers and silica fibers are preferable because of excellent safety. Glass fiber is more preferable because of its excellent cost.
The composition of the glass fiber or silica fiber is not particularly limited, but it is preferable that SiO ₂ (silicon dioxide) is 70% by mass or more and Al ₂ O ₃ (aluminum oxide) is 4% by mass or more. By including 70 mass% or more of SiO ₂ (content ratio is 70 mass% or more), heat resistance is excellent. When Al ₂ O ₃ is contained in an amount of 4% by mass or more (content ratio is 4% by mass or more), the heat shrinkage after heating can be reduced, and it becomes difficult to generate a gap, thereby suppressing a decrease in fireproof performance and soundproof performance. be able to. The upper limit of the SiO ₂ upper, and _Al 2 _{O 3} is not particularly limited, if it to say, SiO ₂ is less 95 mass%, _Al 2 _{O 3} is not more than 12 wt%.
Here, the value of the composition of the glass fiber or silica fiber is the same as that of the glass fiber or silica fiber in the inorganic fiber heat insulating material JIS-R-3101 “analysis method of soda-lime glass” or JIS-R-3105 “borosilicate glass”. This is a value measured by performing a pre-analysis process in accordance with the wet analysis method determined in “Analysis Method of”.
When the inorganic fiber heat insulating material is a needle mat, the inorganic fiber is preferably a long fiber. This is because the fibers tend to become entangled and felt by needling.
Although the fiber length of a long fiber is not specifically limited, It is preferable that it is 25-200 mm. This is because it is likely to be felted by needling.
Although the thickness of an inorganic fiber is not specifically limited, If it says dare, it will be 6-12 micrometers.

2-2. Organic fiber The organic fiber contained in the inorganic fiber heat insulating material is not particularly limited, but is a thermoplastic resin fiber such as polyester fiber (for example, polyethylene terephthalate fiber) or polyolefin-based organic fiber (for example, polyethylene fiber or polypropylene fiber). Preferably there is. This is because by including thermoplastic resin fibers in the inorganic fiber heat insulating material, the thermoplastic resin fibers can be fused by heat treatment in post-processing, the surfaces of the fibers can be fixed, and scattering of the fibers can be prevented.
Although the content rate of an organic fiber is not specifically limited, It is preferable that it is 10 mass% or less on fire prevention performance. More preferably, it is 4-10 mass%.
The fiber length and the fineness of the organic fiber are not particularly limited, and if dare to say, the fiber length is 25 to 200 mm and the fineness is 1 to 10 denier.

2-3. Organic fiber non-woven fabric The method for attaching the organic fiber non-woven fabric to the main body of the inorganic fiber heat insulating material is not particularly limited, but the inorganic fiber heat insulating material is laminated on the main body of the inorganic fiber heat insulating material, and the inorganic fiber heat insulating material is formed by needling. Examples thereof include a method in which the inorganic fiber of the main body of the material is entangled with the organic fiber of the nonwoven fabric, and the organic fiber nonwoven fabric is integrally laminated on the inorganic fiber heat insulating material. According to this method, it is possible to reduce the irritation (tingling sensation) to the skin caused by the scattering of the inorganic fibers and the puncture of the skin by the inorganic fibers during construction.
The fiber used for the organic fiber nonwoven fabric is not particularly limited, but is a long fiber made of a resin such as polyester, polyethylene, polypropylene, nylon, acrylic, vinylon, or rayon, or a copolymer resin or mixed resin of these resins. It can be illustrated. Moreover, you may mix and use an aramid fiber, a natural fiber, a polylactic acid fiber, etc. with these long fibers.
Although the fineness of a fiber is not specifically limited, 1-10 denier is preferable, More preferably, it is 2-7 denier.
The length of the fiber is not particularly limited, but it is preferably a continuous long fiber because it tends to be in the form of a cloth.
Basis weight of the organic fiber nonwoven fabric is not particularly limited, is preferably from 15 to 40 g / ^{m 2,} and more preferably 20 to 30 g / ^{m 2.} If it is less than 15 g / m ² , there is little entanglement between fibers, and it is difficult to produce a nonwoven fabric. If it exceeds 40 g / m ² , the total calorific value at the time of fire is remarkably increased, which is not preferable in terms of fire prevention performance.

2-4. Sealing treatment Sealing the surface between fibers by applying sealing treatment to the inorganic fiber insulation material, scattering of the inorganic fibers and skin irritation caused by the inorganic fibers piercing the skin during construction (prickling feeling) Can be reduced. In addition, the surface of the inorganic fiber heat insulating material on the side provided with the organic fiber non-woven fabric is also subjected to sealing treatment to fix the surface between the fibers, and the inorganic fibers scatter on the surface, and the inorganic fibers pierce the skin during construction. The irritation | stimulation to the skin which arises by this can be decreased more.
Here, the fixing substance used for the sealing treatment is not particularly limited, but examples thereof include organic polymers such as acrylic resins and synthetic rubbers, inorganic binders, inorganic organic composite binders, etc., and flexibility of the inorganic fiber heat insulating material. The organic polymer is preferably used because it is less likely to cause powder falling or scattering during molding. In addition, these fixing substances are applied as an emulsion dispersed in a dispersion medium such as water by a coating method such as a roll coater or a spray. Moreover, the application amount is not particularly limited, but is preferably ³ to 10 g / m ² with respect to one surface of the inorganic fiber heat insulating material. If it is less than 3 g / m ² , the surface adhesion between the fibers is poor, and if it exceeds 10 g / m ² , fireproof performance and sound absorption / water absorption performance may be deteriorated.

3. Adhesive Material The adhesive material for adhering the inorganic fiber heat insulating material to the back surface of the steel sheet exterior material is not particularly limited, and examples thereof include an adhesive, an adhesive film, and an adhesive film that can be bonded by heating.
Although it does not specifically limit as an adhesive agent, A synthetic rubber type hot melt adhesive agent etc. can be illustrated.
The use mode in the case of using an adhesive as a sticking material is not particularly limited, but it is possible to bond an inorganic fiber heat insulating material by applying the adhesive to the inorganic fiber heat insulating material by a coating method such as roll coating or spraying. An embodiment in which an adhesive layer is provided on the surface can be exemplified. In this case, it is preferable to protect the adhesive surface of the adhesive layer until construction by attaching release paper to the adhesive layer.
The coating amount of the adhesive is not particularly limited, is preferably from 10 to 40 g / ^{m 2,} and more preferably 15 to 30 g / ^{m 2.} Is less than 10 g / m ^2, when the inorganic fiber insulation is water, not obtained sufficient adhesive strength, there is a risk that peeling of the inorganic fiber insulation occurs exceeds 40 g / m ^2, reduced fire performance There is a risk.

4). Plaster board Although a plaster board is not specifically limited, Since fire resistance and toughness improve, it is preferable that 0.4-20 mass% of reinforcing fibers are contained, and a moisture content is 5 mass% or less. Moreover, it can use also for the curved-surface outer wall which has a curve by containing 0.4-20 mass% of reinforcement fibers, and a moisture content is 5 mass% or less. For example, by using two or more plaster boards with a thickness of 5 mm, a fireproof / soundproof structure for a wall that can be curved is obtained.
The reinforcing fiber is not particularly limited, and examples thereof include inorganic fibers such as crow fibers.
The thickness of the plaster board is not particularly limited, but it is 5 to 15 mm. It is preferable in terms of fire prevention performance that a thin layer (for example, a thickness of less than 12 mm) is laminated (stacked) to have a thickness of 12 mm or more.

5). Metal sound-absorbing sheet The metal sound-absorbing sheet is not particularly limited, but is a metal mesh sheet (wire mesh), expanded metal, punching metal with an aperture ratio of 20% or more, and metal plate with a hole with an aperture ratio of 20% or more. Etc. can be illustrated. A metal mesh sheet is preferable because it has a higher sound absorption performance than a polymer mesh sheet (especially in a frequency band of 500 to 1000 Hz) and excellent heat resistance.
The mesh sheet is not particularly limited, and examples thereof include a mesh structure having a mesh structure of 30 to 200 mesh, a wire diameter of 0.1 to 0.4 mm, and an opening ratio of 10 to 50%.
Although it does not specifically limit as a metal used for a metal sound-absorbing sheet, Stainless steel, aluminum, etc. can be illustrated.

  According to the present invention, it has excellent fireproof performance, can prevent condensation on the back surface of the steel sheet exterior material, can prevent the occurrence of rust due to the intrusion of rainwater from the end of the steel sheet exterior material, is excellent in soundproofing and lightweight wall A fireproof and soundproof structure can be provided.

It is a one part perspective view of the fire-proof sound insulation structure for walls of Example 1. FIG. It is a partial exploded perspective view of the fireproof soundproof structure for the walls. It is a top view near the edge part of the steel plate exterior material of the fireproof soundproof structure for the walls. It is a partial top view of the fireproof soundproof structure for the walls. It is a cross-sectional schematic diagram of a part of the needle mat of the fireproof and soundproof structure for the wall. It is a one part perspective view of the fire-proof sound insulation structure for walls of Example 5. FIG. It is a top view of the steel plate exterior material and inorganic fiber heat insulating material of the fireproof soundproof structure for walls of the other example of this invention.

  A wall fireproof and soundproof structure 10 according to a first embodiment of the present invention will be described with reference to FIGS. The wall fireproof and soundproof structure 10 is used as an outer wall of a building.

  The wall fireproof and soundproof structure 10 is provided with a sheet-like inorganic fiber heat insulating material having a plurality of steel plate sheathing materials 11 provided with angular wave-shaped projections and recesses, and the projections and depressions extending in the vertical direction. The material 20 includes a plaster board 15 provided behind the steel plate exterior material 11 and in contact with the back surface of the inorganic fiber heat insulating material 20, and a trunk edge 18 provided behind the plaster board 15. The steel plate exterior material 11, the inorganic fiber heat insulating material 20, and the plaster board 15 are fixed to the trunk edge 18 by a fixing screw 19 driven from the steel plate exterior material 11 side. Therefore, the steel plate exterior material 11, the inorganic fiber heat insulating material 20, and the plaster board 15 are fixed to the trunk edge 18 by driving the fixing screws 19 from the steel plate exterior material 11 side.

  The plurality of steel plate exterior members 11 are arranged side by side with their left and right end portions 12 and 13 superimposed on the front and back. Specifically, the right end portion 12 is overlapped with the front side of the left end portion 13R of the steel plate exterior material 11R adjacent to the right side, and the left end portion 13 is overlapped with the back side of the right end portion 12L of the steel plate exterior material 11L adjacent to the left side. The steel sheet exterior material 11R adjacent to the right side and the steel sheet exterior material 11L adjacent to the left side are juxtaposed. In addition, the steel plate exterior material 11 has the reverse relationship of the front and back of the right end portion 12 and the left end portion 13, that is, the right end portion 12 is superimposed on the back side of the left end portion 13R of the steel sheet exterior material 11R adjacent to the right side. The left end portion 13 may be overlapped with the front side of the right end portion 12L of the steel sheet exterior material 11L adjacent to the left side.

  The inorganic fiber heat insulating material 20 is bent along the unevenness of the steel plate exterior material 11 and is adhered to the entire back surface of the steel plate exterior material 11 with an adhesive so as to have substantially the same thickness. However, the inorganic fiber heat insulating material 20 is not attached to the back surface of the right end portion 12. Therefore, the inorganic fiber heat insulating material is not interposed between the right end portion 12 and the left end portion 13R where the right end portion 12 is superimposed on the front side. In addition, the inorganic fiber heat insulating material 20 is stuck on the back surface of the left end portion 13.

  The plaster boards 15 are provided so that adjacent ones do not overlap each other and the fore edges are in contact with each other.

  The trunk edge 18 is a steel C-type channel installed between steel frames (not shown).

  Next, each material of the steel plate exterior material 11, the inorganic fiber heat insulating material 20, and the plaster board 15 will be described.

  As the steel sheet exterior material 11, a product name “TK wide angular wave 800 F type shape” of Tanakaya Co., Ltd., which is a hot-dip galvanized steel sheet having a thickness of 0.5 mm formed in an angular wave shape, was used.

The inorganic fiber heat insulating material 20 includes 95% by mass of silica fibers having an average fiber diameter of 9 μm and an average fiber length of 100 mm, and 5% by mass of PET (polyethylene terephthalate) fibers having a fiber length of 50 mm and a fineness of 3 denier. The needle mat 21 provided with the main body portion 22 and the PET fiber nonwoven fabric 23 on the plaster board 15 side of the main body portion 22 was used.
The needle mat 21 had a thickness of 5 mm and a bulk density of 120 kg / m ³ .
The composition of silica fiber was 95% by mass for SiO ₂ (silicon dioxide), 4% by mass for Al ₂ O ₃ (aluminum oxide), and 6% by mass for others such as CaO (calcium oxide).
The PET fiber nonwoven fabric 23 is made of PET continuous long fibers having a fineness of 2 denier and has a basis weight of 30 g / m ^2. By needle punching from the PET fiber nonwoven fabric 23 side, as shown in FIG. 23 fibers were entangled and integrated with fibers (silica fibers, etc.) of the main body 22.
In addition, acrylic resin was applied to both surfaces of the needle mat so that the coating amount of each surface was 5 g / m ² (10 g / m ^{2 on} both surfaces), and a sealing treatment was performed.
A chloroprene rubber adhesive was used for adhering to the steel sheet exterior material 11, and the coating amount was 40 g / m ² .

The amount of silica fibers such as SiO ₂ , Al ₂ O _3, and CaO is analyzed based on the wet analysis method determined by JIS-R-3101 or JIS-R-3105 for inorganic fibers of the inorganic fiber heat insulating material 20. Pretreatment is performed, SiO ₂ is a value measured by a silica aggregation method, Al ₂ O ₃ is a plasma emission analysis method, and CaO and the like are values measured by a plasma emission analysis method or a flame spectroscopy method. In addition, the amount of SiO ₂ or the like of the silica fiber and glass fiber described below is a value measured in the same manner.

  The plasterboard 15 contains 10% by mass of glass fiber as a reinforcing fiber, has a moisture content of 2% by mass, has waterproof paper pasted on both sides, and has a thickness of 12.5 mm. Tiger board "was used.

  The wall fireproof and soundproof structure 32 of Example 2 of the present invention was the same as that of Example 1 except that the needle mat used for the inorganic fiber heat insulating material 20 was different from the wall fireproof and soundproof structure 10 of Example 1.

The needle mat of Example 2 has an average fiber diameter of 9 μm and an average fiber length of 75 mm. The composition is 70 mass% for SiO ₂ , 12 mass% for Al ₂ O _3, 18 mass% for CaO and others. It consisted of 95% by mass of certain glass fibers and 5% by mass of PET fibers. The other configuration such as thickness was the same as that of the needle mat of Example 1. The PET fiber was the same as that of the needle mat of Example 1.

  The wall fireproof and soundproof structure 33 of Example 3 of the present invention was the same as that of Example 1 except that the needle mat used for the inorganic fiber heat insulating material 20 was different from the wall fireproof and soundproof structure 10 of Example 1.

The needle mat of Example 3 has an average fiber diameter of 9 μm and an average fiber length of 75 mm. The composition is 70 mass% for SiO ₂ , 4 mass% for Al ₂ O _{3, and} 26 mass% for CaO and others. It consisted of 90% by mass of certain glass fibers and 10% by mass of PET fibers. The other configuration such as thickness was the same as that of the needle mat of Example 1. The PET fiber was the same as that of the needle mat of Example 1.

  The wall fireproof and soundproof structure 34 of Example 4 of the present invention is the same as that of Example 1 except that the needle mat and plaster board 15 used for the inorganic fiber heat insulating material 20 are different from the wall fireproof and soundproof structure 10 of Example 1. It was.

The needle mat of Example 4 has an average fiber diameter of 9 μm and an average fiber length of 100 mm. The composition is 92% by mass of SiO ₂ , 4% by mass of Al ₂ O ₃ , and 4% by mass of others such as CaO. It consisted of 100% by weight of certain glass fibers. Moreover, although the bulk density was the same as the needle mat of Example 1, thickness was 8 mm, there was no PET fiber nonwoven fabric, and the sealing process was not performed. Moreover, the coating amount of the chloroprene rubber adhesive was 20 g / m ² .

  The plasterboard 15 is a product of Yoshino Gypsum Co., Ltd., which contains 0.4% by mass or more of glass fiber as a reinforcing fiber, has a moisture content of 2% by mass, has waterproof paper pasted on both sides, and has a thickness of 15.0 mm. The name was “Tiger board type Z”.

  As shown in FIG. 6, the wall fireproof and soundproof structure 40 of Example 5 of the present invention is provided between the steel plate exterior member 11 having the inorganic fiber heat insulating material 20 adhered to the back surface and the plaster board 15 (inorganic fiber heat insulating material). 20 and the plaster board 15) is different from the wall fireproof and soundproof structure 32 of the second embodiment in that a metal sound absorbing sheet 44 is inserted, and the other points are the same as the second embodiment. . In FIG. 6, the same members as those in the first embodiment are denoted by the same reference numerals.

A 30-mesh stainless mesh sheet (480 g / m ² ) obtained by plain weaving of stainless steel (SUS304) wire having a wire diameter of 0.22 mm was used for the metal sound-absorbing sheet 44. Further, the stainless mesh sheet is fixed between the inorganic fiber heat insulating material 20 and the plaster board 15 by a fixing screw 19.

  The wall fireproof and soundproof structure 36 of Example 6 of the present invention was the same as Example 1 except that the needle mat used for the inorganic fiber heat insulating material 20 was different from the wall fireproof and soundproof structure 10 of Example 1.

The needle mat of Example 6 has an average fiber diameter of 9 μm and an average fiber length of 75 mm, and the composition is 55.3 mass% for SiO ₂ , 15.1 mass% for Al ₂ O ₃ , CaO, etc. It consisted of 95% by mass of 29.6% by mass of glass fiber (E glass fiber) and 5% by mass of PET fiber. The thickness and other configurations were the same as those of the needle mat of Example 1, but the application amount of the acrylic resin for the sealing treatment was 3 g / m ² (6 g / m ^{2 on} both sides). It was. The PET fiber was the same as that of the needle mat of Example 1.

  The wall fireproof and soundproof structure 37 of Example 7 of the present invention was the same as Example 1 except that the needle mat used for the inorganic fiber heat insulating material 20 was different from the wall fireproof and soundproof structure 10 of Example 1.

The needle mat of Example 7 has an average fiber diameter of 9 μm and an average fiber length of 100 mm. The composition is 92.4 mass% for SiO ₂ , 3.4 mass% for Al ₂ O ₃ , CaO, etc. It was composed of 95% by mass of silica fiber, which is 4.2% by mass, and 5% by mass of PET fiber. Moreover, although the thickness, the bulk density, and the application amount of the adhesive were the same as those of the needle mat of Example 1, there was no PET fiber nonwoven fabric and no sealing treatment was applied. The PET fiber was the same as that of the needle mat of Example 1.

  The wall fireproof and soundproof structure 38 of Example 8 of the present invention was the same as Example 1 except that the needle mat used for the inorganic fiber heat insulating material 20 was different from the wall fireproof and soundproof structure 10 of Example 1.

The needle mat of Example 8 has an average fiber diameter of 9 μm and an average fiber length of 50 mm. The composition is 66 mass% for SiO ₂ , 12 mass% for Al ₂ O _{3, and} 22 mass% for CaO and others. It consisted of 100% by weight of a certain glass fiber. The other configuration such as thickness was the same as that of the needle mat of Example 1.

  Next, while performing the fireproof test with respect to the fireproof soundproof structure for walls of said Examples 1-8, about the fireproof soundproof structure for walls of Examples 2 and 5, the sound absorption coefficient was measured. Table 1 shows the evaluation results of the fireproof test and the measurement results of the sound absorption coefficient. In addition, it shows in Table 1 also about the structure of each fireproof soundproof structure for walls.

(1) Fire test ○ Test method The fire test was conducted as follows.
The test was conducted by heating a range of 0.54 m in length and 0.79 m in width with a burner provided 80 cm away from the surface of each test sample. Heated according to ISO 834 standard heating temperature curve. The heating time was 30 minutes except for Example 4, and Example 4 was 60 minutes.

○ Evaluation method In the fire test, the heat shielding property, flame shielding property and non-damage property were evaluated as follows.
-The heat shielding property is good when the back surface temperature of the specimen (the temperature of the surface of the plaster board 15 that is not on the steel plate exterior material 11 side) is 140 ° C. or less on average and 180 ° C. or less at the maximum. Was evaluated as ◯, △ when it was almost met, and × when it was not possible.
-Flame-shielding properties are good for the standard that there is no flame eruption or flame that continues for more than 10 seconds on the non-heated side of the specimen, and no damage such as cracks through which the flame passes. In the case of ◯, the case was evaluated as △, and in the case of impossibility, it was evaluated as ×.
-The non-damage property was evaluated as “good” when the heat shrinkage amount did not exceed 1%, “△” when it was satisfactory, and “poor” when it was impossible.

(2) Sound absorption rate ○ Measuring method The sound absorption rate was measured as follows.
A disk-shaped test piece defined in JIS-A-1405 was punched out with a blade, and the sound absorption coefficient at each frequency (125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz) was measured according to the normal incident sound absorption coefficient measurement method by the in-tube method.

The fireproof and soundproofing structures for walls of Examples 1 to 8 of the present invention are excellent in fireproof performance because the inorganic fiber heat insulating material 20 is adhered to the back surface of the steel sheet exterior material 11 along the unevenness of the steel sheet exterior material 11. It was. In particular, Examples 1 to 5 using a needle mat made of glass long fibers or silica long fibers having a composition of 70 to 92% by mass of SiO _{2 and} 4 to 12% by mass of Al ₂ O ₃ as the inorganic fiber heat insulating material 20. The fireproof and soundproof structure for the wall was excellent in fireproof performance.
Since the inorganic fiber heat insulating material 20 was stuck on the back surface, the wall fireproof and soundproof structures of Examples 1 to 8 of the present invention were able to prevent condensation on the back surface of the steel sheet exterior material 11.
In the fireproof and soundproofing structures for walls of Examples 1 to 8 of the present invention, since the inorganic fiber heat insulating material 20 is not adhered to the back surface of the right end portion 12, the inorganic fiber heat insulating material is interposed between the left and right ends overlapped. 20 did not intervene, rainwater did not enter, and generation of rust on the steel sheet exterior material 11 (particularly the back surface) could be prevented.
The wall fireproof and soundproof structures of Examples 1 to 8 of the present invention were excellent in soundproofing performance because the inorganic fiber heat insulating material 20 was adhered to the back surface of the steel sheet exterior material 11. In particular, the wall fireproof and soundproof structure of Example 5 in which the stainless steel mesh sheet 44 is inserted between the inorganic fiber heat insulating material 20 and the plaster board 15 has a large low frequency (125 to 500 Hz) sound absorption coefficient and a low frequency band. The soundproofing performance was excellent.
The fireproof and soundproof structures for walls of Examples 1 to 8 of the present invention were lightweight because they consisted of the steel plate exterior material 11, the inorganic fiber heat insulating material 20, and the plaster board 15.
Since the fireproof and soundproofing structure for walls of Examples 1 to 8 of the present invention uses the plaster board 15 containing 0.4% by mass or more or 10% by mass of reinforcing fibers and having a moisture content of 2% by mass, the curved outer wall Could also be constructed.

  In addition, this invention is not limited to the said Example, In the range which does not deviate from the meaning of invention, it can change suitably and can be actualized. For example, as shown in FIG. 7, after attaching an inorganic fiber heat insulating material 52 to the back surface of a flat steel plate 51 (a in FIG. 7), an uneven shape is integrally attached to the steel plate 51 and the inorganic fiber heat insulating material 52. What is used (b of FIG. 7) is used as a steel sheet exterior material and an inorganic fiber heat insulating material of the fireproof and soundproof structure for walls of the present invention.

10 Fireproof and soundproof structure for walls (Example 1)
DESCRIPTION OF SYMBOLS 11 Steel plate exterior material 12 Right end part 13 Left end part 15 Plaster board 18 Trunk edge 19 Fixing screw 20 Inorganic fiber heat insulating material 21 Needle mat 32 Fireproof soundproof structure for walls (Example 2)
33 Fire and soundproof structure for walls (Example 3)
34 Fireproof and soundproof structure for walls (Example 4)
36 Fireproof and soundproof structure for walls (Example 6)
37 Fire and soundproof structure for walls (Example 7)
38 Fireproof and soundproof structure for walls (Example 8)
40 Fire and soundproof structure for walls (Example 5)
44 Sound absorbing sheet

Claims (4)

  A plurality of steel plate exterior materials (11) with irregularities are arranged side by side with their end portions (12, 13) overlapped on the front and back, and a sheet-like inorganic fiber heat insulating material on the back surface of the steel plate exterior material (11) (20) is bent and stuck along the unevenness, and the inorganic fiber heat insulating material (20) is interposed between the overlapping end portions (12, 13) of the steel sheet exterior material (11). The plaster board (15) with waterproof paper affixed to at least one side is in contact with the back side of the inorganic fiber heat insulating material (20), and the steel plate exterior material (11), the inorganic fiber heat insulating material (20), and the plaster board ( 15) A fireproof and soundproof structure for a wall, wherein 15) is stopped by driving a fixed screw (19) from the steel plate exterior (11) side to a steel column or trunk edge (18). The inorganic fiber heat insulating material (20) is a needle mat having a bulk density of 80 to 200 kg / m ³ ,
The inorganic fiber of the inorganic fiber heat insulating material (20) is glass fiber or silica fiber,
_{2. The} fireproof and soundproof structure for walls according to claim 1, wherein the composition of the glass fiber or the silica fiber is such that SiO ₂ is 70% by mass or more and Al ₂ O ₃ is 4% by mass or more.   The fireproof / soundproof structure for walls according to claim 1 or 2, wherein the plaster board (15) contains 0.4 to 20% by mass of reinforcing fibers and has a moisture content of 5% by mass or less.   The fireproof and soundproof structure for walls according to any one of claims 1 to 3, wherein a metal sound absorbing sheet (44) is inserted between the inorganic fiber heat insulating material (20) and the plaster board (15).

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