JPH0726639A - Heat-resistant outer wall panel - Google Patents

Abstract

PURPOSE:To achieve sufficient fire prevention by disposing inorganic expansive sheet on a joint between outer wall panels so that the expansive sheet expands at a temperature higher than predetermined temperature, thereby sealing the joint. CONSTITUTION:A hard cemented chip board 12, a glass-wool heat insulation material 13, and a plaster board 14 as inner wall board are laminated in three layers to form a heat-resistant outer wall panel 11. And a joint 16 is formed in a joint part between the panels 11, and inorganic expansive sheet materials 17a, 17b are bonded to the side surfaces 15a, 15b of the joint 16 respectively. Next, when temperature in the vicinity of the panels 11 has reached about 250 deg.C due to a fire, the sheet materials 17a, 17b are expanded, thereby sealing the joint 16. Consequently, fire is not allowed to remain in the joint, so that fire prevention can be achieved by preventing, for example, inflammation from occurring again.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a heat-resistant outer wall panel.

[0002]

2. Description of the Related Art Some unit buildings such as so-called unit houses employ a heat-resistant outer wall panel 1 having a fireproof structure as shown in FIG. This has a triple structure in which a hard wood chip cement board 2, a heat insulating material 3, and an inner wall board 4 are laminated in order from the outside of the building.

Here, 5 is an iron frame of the outer wall panel 1. The hard wood chip cement board 2 is a composite material composed of cement and wood. Even if the hard wood chip cement board 2 is exposed to a flame with a maximum temperature of 840 ° C. for 30 minutes from the outside of the building, the surface temperature of the inner wall material 4 is 50 ° C. The fire resistance test (JIS-A-1302) is to be suppressed below (the flash point of the wood constituting the internal structure of the building is about 260 ° C.).
Have been demonstrated by.

By the way, joints (gaps) 6 are formed at the joints of the heat-resistant outer wall panels 1 and 1 having such fire resistance, and it is necessary to impart fire resistance to these joints 6 as well.

Therefore, the applicant of the present invention has proposed that the iron frame 5,
An invention in which heat-resistant outer wall panel 1 is provided with heat resistance by disposing organic expansion sheet material 7 between 5 (Japanese Patent Application No.
-259731).

According to this, the organic expansion sheet material 7 is
When it reaches a temperature of 250 ° C., it expands about 10 to 20 times and closes the joint portion 6, so that it is possible to prevent a flame having a temperature higher than the flash point of wood from reaching the inside of the building.

[0007]

However, in the heat resistant outer wall panel as described above, since the base material of the organic expansion sheet material 7 is made of rubber, the organic expansion sheet material 7 itself accumulates heat. However, it is often carbonized, and it may not be possible to provide sufficient fire protection.

The present invention was created in view of the above circumstances, and an object thereof is to provide a heat-resistant outer wall panel capable of providing sufficient fire protection.

[0009]

In order to achieve the object, a heat resistant outer wall panel according to the present invention is a heat resistant outer wall panel in which a thermal expansion heat resistant sealing material is provided at a side end portion of the heat resistant outer wall panel. The sealing material is characterized by being an inorganic expansion sheet material that expands at a predetermined temperature or higher to seal the joint portion.

[0010]

According to the heat-resistant outer wall panel of the present invention, the inorganic expansion sheet material disposed in the joint portion between the heat-resistant outer wall panels expands at a predetermined temperature or higher (less than the flash point of wood) and the joint portion is expanded. Blockade. Moreover, the inorganic expansion sheet material is
Does not carbonize and does not easily accumulate heat. Therefore,
Fire is not likely to remain in the joints, and sufficient fire protection can be provided.

[0011]

Embodiments of the heat-resistant outer wall panel according to the present invention will be described below with reference to the drawings.

In FIG. 1, 11 is a heat-resistant outer wall panel used in a unit house. This heat-resistant outer wall panel 1
1 has a triple structure in which a hard wood chip cement board (Sekisui Chemical Co., Ltd., trade name Synthelite) 12, a glass wool heat insulating material 13, and a gypsum board 14 as an inner wall board are laminated in order from the outside of the building. Reference numeral 15 is an iron frame as a frame material of the heat resistant outer wall panel 11.

Synthelite 12 is an ultra-high density composite material composed mainly of concrete and wood.
Even if a flame having a maximum temperature of 840 ° C. is applied for a minute, the gypsum board 14 has a fire resistance performance that can suppress the surface temperature of the gypsum board 14 to 50 ° C. or less.

A joint 16 is formed at the joint between one heat-resistant outer wall panel 11 and the other heat-resistant outer wall panel 11. The iron frames 15, 15 facing the joint portion 16
The inorganic expansion sheet material 17 is provided on the side surface portions 15a and 15b of the
a and 17b are attached and arranged.

The inorganic expansion sheet materials 17a and 17b
Is composed only of inorganic substances such as silicates, and does not contain any organic substances in the base material and the laminated portion. Then, depending on its composition, when it reaches a temperature of 250 ° C., it expands and expands about 10 to 20 times to close the joint portion 16 (see the chain double-dashed line in the figure).

Therefore, when the temperature near the heat-resistant outer wall panels 11 and 11 reaches 250 ° C. due to a fire, as shown by the chain double-dashed line in the figure, the inorganic type expansion sheet materials 17a and 17b are used.
Is expanded and expanded, and the joint portion 16 is blocked. Moreover, since the inorganic expansion sheet materials 17a and 17b do not contain any organic matter in the base material and the laminated portion,
Since it does not carbonize and does not easily accumulate heat, the joint part 1
It is difficult for fire to remain in No. 6, and sufficient fire prevention such as prevention of reignition can be achieved.

2 to 4 show a modification of the above embodiment. Note that duplicate description of the same element will be omitted.

In FIG. 2, 27a and 27b are inorganic expansive sheet materials, and 28a and 28b are organic expansive sheet materials. In this way, the side parts 1 of the iron frames 15, 15
By arranging the organic expansion sheet materials 28a and 28b having different expansion and expansion characteristics in the middle portion of 5a and 15b, it is possible to shift the timing at which the joint portion 16 is blocked, and it is possible to achieve more sufficient fire protection. . The effect similar to this is as shown in FIG. 3 and FIG.
The organic expansion sheet material 38a, 38b, 48 is attached to the outer half of the building or the inner half of the building of the side surface portions 15a, 15b of 15.
It can also be achieved by disposing a and 48b.

The present invention is not limited to the above embodiments, and design changes and the like made by those skilled in the art are also included in the technical scope of the present invention. For example, in the above-mentioned examples, the hard wood chip cement board was given by Sekisui Chemical Co., Ltd. under the trade name Synthelite, but other composite materials of ultra-high density mainly composed of cement and wood are used. It doesn't matter.

[0020]

As described above, according to the heat-resistant outer wall panel of the present invention, it is possible to prevent fire from remaining in the joint portion and to provide sufficient fire protection.

[Brief description of drawings]

1 is a cross-sectional view showing an embodiment of a heat resistant outer wall panel according to the present invention.

FIG. 2 is a cross-sectional view showing the same modified example.

FIG. 3 is a cross-sectional view showing the same modified example.

FIG. 4 is a cross-sectional view showing the same modified example.

FIG. 5 is a cross-sectional view showing an example of a conventional heat resistant outer wall panel.

[Explanation of symbols]

 11 heat-resistant outer wall panel, 12 synthlite (hard wood chip cement board), 13 glass wool heat insulating material, 14 gypsum board (inner wall board), 16 joints, 17a, 17b inorganic expansive sheet material, 27a, 27b inorganic expansive sheet material.

Claims (1)

[Claims] 1. A heat resistant outer wall panel in which a side wall of the outer wall panel is provided with a heat resistant heat resistant sealing material, wherein the heat resistant heat resistant sealing material is an inorganic material that expands at a predetermined temperature or higher to seal the joint portion. A heat-resistant outer wall panel, which is an expanded sheet material.