JP2004044132A - Fireproof heat insulation bed material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fireproof heat insulation bed material, used for a bed material of a roof, a wall or the like, and having both excellent heat insulation performance and fireproof performance. <P>SOLUTION: This fireproof heat insulation bed material 18 is formed by stacking a plate-like inorganic foam 15 and a fitting plate 14 serving as a support in fitting the bed material to a construction place with an inorganic adhesive 16. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a base material such as a roof and a wall having excellent fire resistance and heat insulation performance.
[0002]
[Prior art]
Generally, the following functions (1) to (5) are required as functions required for a roof base material.
(1) Function to support underlaying materials such as roofing material, heat insulating material, roofing material, perlite mortar, roofing material, etc. (2) Function to support snow load and wind load (3) Tighten with roofing material Function 4) Fire protection, heat insulation, dew prevention, sound insulation, and sound absorption functions 5) Function as a scaffold for construction
In addition, viewing field and the auditorium floor area of more than 2000m ^2, in the building of public property has increased as gymnasium or the like of the floor area of a total of 2000m ² or more of the school, as the performance of the roof base material, on ▲ 4 ▼ of fire Fire resistance is absolutely necessary.
[0004]
For example, as shown in FIG. 5, a roof structure of a steel frame building is provided at a certain interval in a direction intersecting rafters 2 on a purlin 1 arranged at a predetermined interval, and a wool cement board 3 is laid on the rafters 2. After that, a waterproof layer such as an asphalt roofing 4 is provided on the wood wool cement board 3, and a metal roofing material 5 is overlaid on the waterproofing layer via a pad 7. In the drawing, reference numeral 6 denotes a hook, and 8 denotes a sheath welding line.
[0005]
With the configuration shown in FIG. 5, the above requirements (1) to (3) can be satisfied. However, with this configuration, it is not possible to obtain a fireproof structure that can withstand the heat of 800 to 1000 ° C. and does not emit a flame outdoors. In order to obtain a fire-resistant structure, a wire mesh base must be attached to a steel purlin, and a fire-resistant coating such as mortar must be applied thereon. Further, it is not sufficient to simply use a wood wool cement board as a base material. Even when the indoor temperature reaches 800 to 1000 ° C. due to a fire, the asphalt roofing on the back side does not ignite in about 30 to 60 minutes. Therefore, the base material must be a backing material for preventing a temperature rise on the back surface.
[0006]
Further, it is necessary to use a base material that does not cause a flame to blow out from the end butted portion of the base material when a fire occurs. In addition, since these roofs are used for viewing halls, public halls, school gymnasiums, etc., they must have sufficient heat insulation and fire resistance. Rigid urethane foam is sometimes used as a heat insulating material, but since rigid urethane foam ignites at 310 ° C., it promotes fire. At present, there are various types of base materials such as wood wool cement board, high pressure wood wool cement board, wood chip cement board, slate / wood wool cement laminate board, etc., which have sufficient fire resistance and high heat insulation. There is no base material to have.
[0007]
FIG. 6 shows an example of a conventional roof base material. The roof base material 9 is obtained by bonding a 20 mm thick wood wool cement board 11 and a 20 mm thick plywood 10 with an epoxy adhesive 12. As shown in FIG. 7, the base material 9 is attached to a steel rafter with abutting the side ends 13 of the base material 9 with drill screws or the like.
[0008]
As shown in FIG. 7, a test body having a butt portion 13 at the side end in the center was prepared, heated from the wood wool cement board 11 side (indoor side) by a test method of ISO-834, and a fire resistance test for 30 minutes was performed. However, when the heating temperature reached 815 ° C. after 25 minutes, a flame was blown up from the butted portion 13 of the base material 9 and ignited the plywood. Further, in order to confirm the performance of the base material 9 itself, a test body as shown in FIG. 6 was made with the same material composition but without the butted portion, and subjected to a heat resistance test of ISO-834 for 30 minutes. As a result, when the heating temperature reached 842 ° C., the temperature at the center of the plywood surface opposite to the heated surface was 206.6 ° C. The Building Standards Law, Article 2, Item 7, and the Ministry of Construction Notification No. 1432, 2000, stipulate that the temperature of the highest part of the wall other than the heated surface will not rise to 200 ° C or more. Therefore, the combustion temperature of combustibles is set to a maximum temperature of 200 ° C. and an average temperature of 160 ° C.
[0009]
[Problems to be solved by the invention]
In the performance evaluation related to the certification based on the provisions of Article 2, Item 7 (fireproof structure) of the Building Standard Act, fireproof performance for a temperature up to 842 ° C when the roof is heated from the indoor side for 30 minutes is required. However, in the prior art, there is no base material such as a roof or a wall that can satisfy both the heat insulation and the fire resistance at the same time.
[0010]
The present invention has been made in view of the above-described circumstances, and has as its object to provide a fire-resistant and heat-insulating base material having both excellent heat-insulating performance and fire-resistant performance.
[0011]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the inventors of the present invention have conducted a fire resistance test of ISO-834. Intensive study was conducted to obtain a fire-resistant and heat-insulating base material that does not cause damage to the base material, and in particular, does not cause the flame to blow out to the outdoor side from the joint between the ends of the base material.
[0012]
The present invention has been made as a result of the above study, and provides a fire-resistant and heat-insulating base material shown in the following (1) to (5).
(1) A base material such as a roof or a wall, wherein a plate-like inorganic foam and a mounting plate functioning as a support for the inorganic foam are laminated with an inorganic adhesive. Fireproof insulation base material.
[0013]
(2) The fire-resistant insulation of (1), wherein the mounting plate is one or two or more laminated plates selected from a high-pressure wood wool cement board, a wood chip cement board, a wood wool cement board, and a plywood. Base material.
[0014]
(3) The inorganic foam obtained by foaming a molding material containing a calculus inorganic component, a water-containing second component for hardening the calculus component in an alkaline region, a fire resistance imparting third component, and a foamable component ( (1) and (2).
[0015]
(4) In the inorganic foam having the B composition, the binding inorganic component is at least one selected from the group consisting of alumina cement, metakaolin, and portland cement, and the water-containing second component that hardens the calculus component in the alkaline region. The component is a metal silicate solution having 1 to 3 mol of silicon dioxide per 1 mol of K ₂ O and / or Na ₂ O, the third component for imparting fire resistance is a metal hydrate, and the foaming component is excessive. (3) The fire-resistant and heat-insulating base material according to (3), which is an aqueous hydrogen oxide.
[0016]
(5) The inorganic foam and the mounting plate have the same width and length, and the inorganic foam and the mounting plate are laminated with a predetermined width in both the width direction and the length direction, whereby the inorganic base material and the mounting plate are stacked in the lateral direction of the adjacent base material. The fire-resistant and heat-insulating base material according to any one of (1) to (4), which can be connected by a joint structure when connecting in a vertical direction.
[0017]
The fire-resistant and heat-insulating base material of the present invention is obtained by laminating an inorganic foam and a mounting plate with an inorganic adhesive, so that the inorganic foam, the mounting plate and the inorganic adhesive have a synergistic action to provide excellent heat insulating performance and fire resistance performance. With. In addition, since the mounting plate that functions as a support for the inorganic foam is laminated on the inorganic foam, the mounting plate can be easily mounted to a construction site such as a steel frame using drive screws or the like.
[0018]
Hereinafter, the present invention will be described in more detail. The fire-resistant and heat-insulating base material of the present invention has a mounting plate that functions as a support for the inorganic foam. The mounting plate may be any as long as the fire-resistant and heat-insulating base material can be firmly attached to the construction site by attaching the mounting plate to a construction site such as a steel frame using a fixing member such as a drive screw. The material of the mounting plate is not particularly limited, but is preferably one or two or more laminated plates selected from a high-pressure wood wool cement board, a wood chip cement board, a wood wool cement board and a plywood.
[0019]
Next, the inorganic foam will be described. In the present invention, the inorganic foam is a fire-resistant performance obtained by foaming a molding material containing a calculus inorganic component, a water-containing second component for hardening the calculus component in an alkaline region, a fire-resistance imparting third component, and a foamable component. (Inorganic foam having the B composition). When a B-type inorganic foam is used as the inorganic foam, the B-type inorganic foam releases crystallization water contained at a high temperature and further deprives the heat of vaporization, so that it has better fire resistance, heat resistance, and heat insulation. A base material can be obtained.
[0020]
Further, in the inorganic foam having the B composition, the binding inorganic component is at least one selected from the group consisting of alumina cement, metakaolin and Portland cement, and a water-containing second component that hardens the calculus component in an alkaline region. Is a metal silicate solution having 1 to 3 moles of silicon dioxide per mole of K ₂ O and / or Na ₂ O, the third component for imparting fire resistance is a metal hydrate, and the foaming component is a peroxide. It is preferably hydrogen water. Here, alumina cement, metakaolin, and portland cement are used as the stone-forming inorganic components. This is because it has a tissue strengthening effect.
[0021]
The compounding amount of each component in the inorganic foam of the B composition is 150 to 450 parts by weight of a water-containing second component for curing the calculus component in an alkaline region with respect to 100 parts by weight of the calculus inorganic component, and fire resistance. It is appropriate that the imparting third component is 50 to 300 parts by weight and the foaming component is 5 to 50 parts by weight. When the water-containing second component is used in an amount of 150 to 450 parts by weight with respect to 100 parts by weight of the calcifying inorganic component, if the amount is less than 150 parts by weight, the amount of alkali required for the curing reaction is insufficient, and poor curing easily occurs during production. If the amount exceeds 450 parts by weight, the water resistance of the obtained inorganic foam is deteriorated. The reason for setting the fire resistance imparting third component to 50 to 300 parts by weight is that if the amount is less than 50 parts by weight, sufficient fire resistance of the obtained inorganic foam cannot be obtained, and if it exceeds 300 parts by weight, the inorganic foam is hardly cured. Because. When the amount of the foaming component is 5 to 50 parts by weight, if the amount is less than 5 parts by weight, a sufficient expansion ratio (insulating property) cannot be obtained. This is because the strength is reduced.
[0022]
More specifically, the inorganic foam of the B composition is, for example, one selected from alumina cement, metakaolin and portland cement as the binding inorganic component, preferably 100% by weight of all three in an appropriate ratio, and calculus in the alkaline region. 150 to 450 parts by weight of a metal silicate solution having 1 to 3 mol of silicon dioxide per 1 mol of K ₂ O and / or Na ₂ O as a water-containing second component for hardening of the acidic component, to provide fire resistance 50 to 300 parts by weight of aluminum hydroxide having water of crystallization and / or magnesium hydroxide having water of crystallization as a third component, and 5 to 50 parts by weight of aqueous hydrogen peroxide (10 to 20% concentration) as a blowing agent A molding material is prepared by using the above-mentioned parts, and the molding material can be obtained by subjecting the molded material to foam molding, followed by heat curing and drying.
[0023]
In the present invention, the inorganic foam may have one layer of the B composition. However, the inorganic foam has a laminated structure composed of multiple layers. At least one layer of the inorganic foam is the inorganic foam of the B composition, and the other layer of the inorganic foam is a calcific inorganic component. It is possible to foam a molding material containing a water-containing second component and a foaming component that cures a calculus component in an alkaline region and to form a foam having high heat insulation performance (an inorganic foam having an H composition). When the inorganic foam having the B composition and the inorganic foam having the H composition are combined as described above, the inorganic foam having the B composition improves the fire resistance performance, and the inorganic foam having the H composition improves the heat insulating performance. Can be reduced in total thickness.
[0024]
In the inorganic foam having the above H composition, the binding inorganic component is at least one selected from the group consisting of alumina cement, fly ash, activated alumina and Portland cement, and contains water that hardens the calculus component in the alkaline region. a metal silicate solution second component has a 1 mole of _{K 2} O and / or Na ₂ O per 3 mol of silicon dioxide, 10-20% concentration foamable component hydrogen peroxide (preferably ) Is appropriate. The reason why the stone-forming inorganic component is alumina cement, fly ash, activated alumina and portland cement is that alumina cement accelerates the curing reaction, portland cement secures long-term compressive strength, and fly ash and activated alumina form pozzolan. This is for the purpose of strengthening the structure of Portland cement by the reaction and improving the fluidity during mixing and foaming of the composition. In addition, fly ash is a waste material of a thermal power plant, and is difficult to treat as industrial waste. However, such a fly ash can be effectively used in the H composition.
[0025]
In addition, the compounding amount of each component in the inorganic foam of the H composition is 100 parts by weight of the calculus inorganic component, 100 to 200 parts by weight of the water-containing second component that cures the calculus component in the alkaline region, and the foaming component. Is suitably 5 to 50 parts by weight.
[0026]
In the present invention, when the inorganic foam having the B composition and the inorganic foam having the H composition are combined to form an inorganic foam, for example, the following laminated structure can be adopted, but the present invention is not limited thereto.
{Circle around (1)} Two-layer structure composed of B composition on the outdoor side and H composition on the indoor side. {Circle over (2)} Two-layer structure composed of the H composition on the outdoor side and B composition on the indoor side. (3) Three-layer structure composed of H composition on the outdoor side, B composition on the center, and H composition on the indoor side
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited to the following examples.
[0028]
(Example 1)
FIG. 1 is a perspective view showing a fire-resistant and heat-insulating base material according to Embodiment 1 of the present invention. The fire-resistant and heat-insulating base material 18 of the present embodiment is obtained by laminating a high-pressure wood wool cement board (mounting board) 14 and a plate-like inorganic foam (B composition) 15 with an inorganic adhesive 16. The inorganic foam 15 is hardened by an inorganic curing reaction. In this respect, the inorganic foam 15 not only has heat resistance itself but also contains aluminum hydroxide and magnesium hydroxide having water of crystallization. The fire-resistant and heat-insulating base material 18 on which is laminated has a remarkable fire resistance performance as a whole. The inorganic foam 15 of the fire-resistant and heat-insulating base material 18 of the present example is disposed indoors, and when a fire occurs from the indoor side, the heated inorganic foam 15 releases water of crystallization and deprives heat of vaporization, so that the high-pressure wood The heat generated by the fire transmitted to the bristle cement board 14 can be significantly reduced. In addition, the heat transfer of the asphalt roofing thereon due to the heat insulating property of the inorganic foam 15 and the heat insulating property of the high-pressure wool cement board 14 can be significantly reduced. Although the inorganic foam 15 alone cannot be attached to a steel frame by drill screws, in this example, the high-pressure wood wool cement board 14 functions as a support when the fire-resistant and heat-insulating base material 18 is installed at a construction site, and thus the wood wool cement board is used. 14 allows the fire-resistant and heat-insulating base material 18 to be securely attached to the steel frame.
[0029]
The fire-resistant and heat-insulating base material 18 of this example was produced, and the following test was performed. In this case, the high-pressure wood wool cement board 14 having a thickness of 20 mm, a bulk density of 0.95 g / cm ³ , and a weight of 18.5 kg / m ² (TS board manufactured by Takemura Kogyo Co., Ltd.) was used. Mortar was used as the agent 16.
[0030]
The composition of the molding material for the inorganic foam 15 having the B composition was as follows. The thickness of the inorganic foam 15 was 20 mm, the density was 440 kg / m ³ , and the thermal conductivity was 0.128 kcal / mh ° C.
・ 7.3% by weight of alumina cement as stone-forming inorganic component
Metakaolin 4.4% by weight
Portland cement 2.7% by weight
Water glass as a water-containing second component that hardens the calculus component in the alkaline region 40.0% by weight of water glass
23.8% by weight of aluminum hydroxide as the third component for imparting fire resistance
3.9% by weight of aqueous hydrogen peroxide as a foaming component
・ Inorganic filler 15.8% by weight
[0031]
Two side end surfaces of the fire-resistant and heat-insulating base material 18 of this example were butted against each other to prepare a test body with the abutting portion at the center, and a fire resistance test was conducted for 30 minutes by the ISO-834 test method. In this case, heating was performed from the inorganic foam 15 side. As a result, the heating temperature reached 842 ° C. after 30 minutes had elapsed, but the temperature at the center of the high-pressure wood wool cement board 14 opposite to the heating surface was as low as 38 ° C. That is, the passage of heat from the abutting portion is prevented by the aluminum hydroxide in the B composition releasing crystal water and depriving it of heat of vaporization. The heat transmission coefficient of the refractory and heat insulating base material 18 of this example was K = 2.89 kcal / m ² h ° C.
[0032]
(Example 2)
FIG. 2 is a perspective view showing a fire-resistant and heat-insulating base material according to Embodiment 2 of the present invention. In the present example, a plate-shaped inorganic foam 17 having a H composition having a thickness of 60 mm was prepared, and a laminated product as shown in FIG. 2 was prepared. Specifically, a high-pressure wool cement board (mounting plate) 14 having a thickness of 20 mm, an inorganic foam 17 having a H composition having a thickness of 60 mm, and an inorganic foam 15 having a B composition having a thickness of 20 mm are bonded with an inorganic adhesive 16. Thus, the fire-resistant and heat-insulating base material 18 of this example was produced.
[0033]
The composition of the molding material of the inorganic foam 15 having the B composition in this example is the same as that in Example 1. The composition of the molding material for the inorganic foam 17 having the H composition is as follows. The density of the inorganic foam 17 having the H composition in this example was 270 kg / m ³ , and the thermal conductivity was 0.084 kcal / mh ° C.
・ 11.0% by weight of alumina cement as stone-forming inorganic component
8.5% by weight fly ash
5.9% by weight of activated alumina
Portland cement 2.7% by weight
36.0% by weight of water glass as a water-containing second component that hardens the calculus component in the alkaline region
-Hydrogen peroxide water 6.5% by weight as a foaming component
・ Inorganic filler 24.3% by weight
[0034]
The fire-resistant and heat-insulating base material 18 of this example is an excellent heat-insulating material having a heat transmission coefficient K of 0.94 kcal / m ² h ° C.
[0035]
(Example 3)
FIG. 3 is a perspective view showing a fire-resistant and heat-insulating base material according to Embodiment 3 of the present invention. The fire-resistant and heat-insulating base material 18 of this example is obtained by shifting a high-pressure wood wool cement board (mounting plate) 14 and an inorganic foam (B composition) 15 having the same width and length by a predetermined distance in both the width direction and the length direction. By laminating with a system adhesive (mortar) 16, joints are formed at both ends in the width direction and both ends in the length direction, respectively. It is a laminate that can be connected. That is, the structure is such that the lengthwise convex joint portion 20 is formed in the lengthwise direction and is fitted to the lengthwise concave joint portion 21. In the width direction, a width direction convex joint portion 22 is formed, and has a structure capable of fitting with the width direction concave joint portion 23. The high-pressure wood wool cement board 14 had a thickness of 20 mm, and the inorganic foam 15 had a thickness of 20 mm. When the refractory and heat insulating base material 18 is pasted on the steel frame, if it is merely a butt, heat is easily transmitted from the butt portion to the back side in the event of a fire. In the case of the third embodiment, the break in the fire-resistant and heat-insulating base material is eliminated so that heat is not easily transmitted to the back side.
[0036]
For a fire resistance test, a test body having one joint 24 at the center as shown in FIG. 4 was prepared, and an ISO-834 test was performed. In this case, heating was performed from the side of the inorganic foam 15, and heating was performed to 946 ° C. in 60 minutes. At this time, the center temperature of the surface on the non-heating side of the wood wool cement board 14 was 42 ° C.
[0037]
【The invention's effect】
As described above, the fire-resistant and heat-insulating base material according to the present invention has both excellent heat-insulating performance and fire-resistant performance, and can be easily attached to construction sites such as steel frames using drive screws or the like. More specifically, the fire-resistant and heat-insulating base material according to the present invention has the following effects.
(1) It can be easily attached to a steel frame with a drive screw.
{Circle around (2)} In the fire resistance test of heating to approximately 1000 ° C. (946 ° C.) in 60 minutes according to ISO-834, the temperature of the opposite surface can be suppressed to a low temperature of 50 ° C. or less. That is, it can withstand heating up to 842 ° C. in 30 minutes from the indoor side of the roof in the event of a building standard fire, and can withstand heating up to 1000 ° C. (946 ° C.) in 60 minutes.
{Circle around (3)} By adjusting the thickness of the inorganic foam having the B composition, a higher level of fire resistance can be realized (it can withstand 1029 ° C. in 120 minutes by heating with ISO-834).
{Circle over (4)} Depending on the mounting method during construction and the situation at the time of fire, heat may rise from the joint between the bases, so that a joint with improved fire resistance can be obtained.
(5) It is possible to provide a base material for a roof or a wall which can easily realize a heat transmission coefficient of k = 1 kcal / m ² h ° C. or less in heat insulation performance.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a fire-resistant and heat-insulating base material according to Example 1 of the present invention.
FIG. 2 is a perspective view showing a fire-resistant and heat-insulating base material according to a second embodiment of the present invention.
FIG. 3 is a perspective view showing a fire-resistant and heat-insulating base material according to a third embodiment of the present invention.
FIG. 4 is a perspective view showing an example of a test body for a fire resistance test.
FIG. 5 is a perspective view showing an example of a roof structure in a conventional steel frame building.
FIG. 6 is a perspective view showing an example of a conventional roof base material.
FIG. 7 is a perspective view showing an example of a test body for a fire resistance test.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main house 2 Rafter 3 Wood wool cement board 4 Asphalt roofing 5 Roofing material 6 Hanger 7 Pad 8 Sheath welding line 9 Roof base material 10 Plywood 11 Wood wool cement board 12 Epoxy adhesive 13 Butt joint 14 High pressure wood wool cement board ( Mounting plate)
15 Inorganic foam (B composition)
16 Inorganic adhesive 17 Inorganic foam (H composition)
18 Fireproof and heat-insulating base material 20 Lengthwise convex joint 21 Lengthwise concave joint 22 Widthwise convex joint 23 Widthwise concave joint 24 Joint

Claims (5)

A base material for a roof, a wall, or the like, wherein a plate-shaped inorganic foam and a mounting plate functioning as a support for the inorganic foam are laminated with an inorganic adhesive. Wood. The fire-resistant and heat-insulating base according to claim 1, wherein the mounting plate is one or two or more laminated plates selected from a high-pressure wood wool cement board, a wood chip cement board, a wood wool cement board, and a plywood. Wood. A foam obtained by foaming a molding material containing a calculus inorganic component, a water-containing second component for hardening the calculus component in an alkaline region, a fire resistance imparting third component, and a foamable component (the B composition). The fire-resistant and heat-insulating base material according to claim 1 or 2, which is an inorganic foam). In the inorganic foam having the B composition, the binding inorganic component is at least one selected from the group consisting of alumina cement, metakaolin, and Portland cement, and the water-containing second component that cures the calculus component in the alkaline region is 1%. A metal silicate solution having 1 to 3 mol of silicon dioxide per mol of K ₂ O and / or Na ₂ O, wherein the third component for imparting fire resistance is a metal hydrate, and the foaming component is aqueous hydrogen peroxide. The fire-resistant and heat-insulating base material according to claim 3, wherein The inorganic foam and the mounting plate have the same width and length, and by laminating the inorganic foam and the mounting plate with a predetermined distance from each other in the width direction and the length direction, the width direction ends and the length direction both ends are laminated. The fire-resistant and heat-insulating base material according to any one of claims 1 to 4, wherein a joint portion is formed.

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