JPS60173236A - Heat insulating panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a heat insulating panel.

BACKGROUND ART Heat insulating panels have been developed in which organic materials such as urethane film, polyethylene, and polystyrene foam are glued onto metal plates.

However, these insulating panels have the disadvantage that in the event of a fire, heat from the outside of the metal plate is immediately transferred to the insulating material, causing organic substances to decompose and producing a large amount of smoke and heat.

The heat insulating panel of the present invention was created in view of the above points,
The purpose of this invention is to provide a heat insulating panel with extremely high heat resistance by delaying the transfer of heat to the outside of the metal plate.

Next, the heat insulating panel of the present invention will be explained. .

The heat insulating panel of the present invention is made of a mixture A″r of a metal plate 1, an organic heat insulating material 2, an inorganic substance 3 containing water of crystallization, and a foam material 4.
:r: Tree formation (Fig. 1) (a) Metal plate The metal plate 1 is a thin plate such as EfA@, stainless steel plate, etc., and forms the outer surface of the panel of the present invention as it is.

(b) Organic insulation material Organic insulation material 2 is used in conventional insulation panels.
A wide variety of materials are available.

Examples include polyurethane foam, polystyrene foam, polyethylene foam, polyurea foam, S[hoxy foam, etc.].

(c) Inorganic substance containing water of crystallization As the inorganic substance 3 containing water of crystallization, the following is used.

1iiiAluminum acid Ah (S04) 3/18
H20 Aluminum ammonium sulfate (NH4) AJ2 (So+), ・12H YuO potassium aluminium KAβ (S O,) ・12To120 Thorium sulfate N a2S O, ・10 HyoO (d) Foaming material Foaming material 4 has already been Use a foamed material such as perlite, or an unfoamed material that foams when heated, such as vermiculite.

(E) Structure (Fig. 1) Inorganic substance 3 containing crystal water on the inner surface of the metal plate 1 mentioned above
After placing the mixture A of the foam material 4 and the organic heat insulating material 2, the heat insulating panel of the present invention is constructed.

(f) Effect When the outside of the metal plate 1 of the heat insulating panel of the present invention is heated with a burner or the like, the foam material 4 that foams during heating rapidly begins to foam and becomes in the same state as the foam material 4 that has already been foamed. Forms a heat insulating layer.

Further, the inorganic substance 3 containing crystal water starts to evaporate crystal water by heating.

The above effect is confirmed by experiment as follows.

(G) Comparative Example (Figures 2 and 3) The relationship between heating time and temperature rise when the following materials are heated from the metal plate 1 side with a burner or the like will be compared.

Note that the thermocouple C at the concentration measurement position is located at the center of the boundary between the fireproof layer B and the organic heat insulating material 2.

1) A heat insulating panel in which a 10 mm thick hard urethane foam is placed between a metal plate 1 and an organic heat insulating material 2 as a fireproof layer B.

2) Water glass 7 as the inorganic substance 3 containing crystal water
00 Sodium sulfate (Na, SO, -10H2O)
9 ('+ a) A heat insulating panel in which a fireproof layer B using vermiculite 6C1 as a foam material 4 is positioned between an organic heat insulating material 2 and a metal plate 1.

3) A heat insulating panel in which asbestos (asbestos board 12 mm thick) is placed as a fireproof layer B between an organic heat insulating material 2 having an inorganic substance 3 containing crystal water and a metal plate 1.

From the comparative experimental example (Fig. 2) in Section 1, it can be seen that experimental example 2), which has the same refractory layer B as the mixture Δ of this example consisting of an inorganic substance 3 containing crystal water and a foam material 4, has a temperature increase. This can be seen to significantly delay the time required.

Note that the metal plate 1 used in the above experiment is a stainless steel plate with a thickness of 0.4 mm, and the organic heat insulating material 2 is a plate with a thickness of 50 mm.

Since the heat insulating panel of the present invention is constructed as described above, the following effects can be expected.

(b) Conventional insulation panels were placed between the fire source and the building to prevent or delay heat conduction to the building, but the organic insulation material itself was heated and produced a large amount of smoke. There are other disadvantages.

The heat insulating panel of the present invention forms a heat insulating layer using a foam material between the fire source and the organic heat insulating material, but in particular, the thermal energy transmitted through the metal plate evaporates water from the inorganic material containing crystal water. While all the crystallized water evaporates, no heat is transferred to the organic insulation material.

Before delaying heat conduction to the building in this way,
Because it can suppress heat conduction to organic insulation materials,
The heat insulation panel of the present invention has a much longer heat resistance time than conventional panels.

(b) Not only is heat conduction to the building (fire outbreak) delayed, but the heating of the organic insulation material itself is delayed, so the generation of organic gas is delayed, and smoke damage in the event of a fire can be suppressed.

[Brief explanation of drawings]

Figure 1: An explanatory diagram of the heat insulating panel of the present invention Figures 2 and 3: An explanatory diagram of a heating experiment 1: Metal plate 2: Organic heat insulating material 3: Focused PJi containing crystal water

Claims (1)

[Claims] A heat insulating panel composed of a metal plate and an organic heat insulating material, characterized in that an inorganic substance containing water of crystallization and a foaming material are positioned between the metal plate and the organic heat insulating material. , insulated panels.