JPS5844139A - Composite 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 composite panel having:

An embodiment of the composite panel according to the present invention will be described in detail below with reference to the drawings. Figure 1 is a longitudinal cross-sectional view showing a composite panel in which inorganic powder and inorganic granules are arranged between the front and back materials and the synthetic resin foam layer, where 1 is the surface material made of well-known materials such as metal plates, and 2 is waterproof. The backing material 3 is made of well-known materials such as paper and aluminum foil, and 3 is a synthetic resin foam layer made of a single material.
It forms the intermediate layer (so-called heat insulating layer and core material) of the composite panel, and also binds all the components together using self-adhesive properties. 4 is an inorganic powder layer, in which gypsum and borax, gypsum and water glass, sodium carbonate and gypsum, borax and zeolite, and, if necessary, one or more of well-known inorganic substances and clay minerals are appropriately mixed therein. ◇5 is an inorganic granular material layer in which one or more of pearlite grains, shirasu balloons, and granulated particles are mixed in a layered manner. In the composite panel according to the present invention configured as described above, the borax first foams under high temperature or direct flame, and at this time, the gypsum absorbs a considerable amount of the crystal water and suppresses the fluidity of the molten material. and forms a complete inorganic refractory layer. Further below, there is an inorganic granular material layer 5 that has been formed before the inorganic powder layer 4 is foamed, and heat from the front and back materials is considerably blocked by the heat insulating layer made of these inorganic foam layers. , only a very small amount of heat is conducted to the synthetic resin foam layer. Also, under normal conditions,
Since the foam structure of the synthetic resin foam layer is not damaged, there is an advantage that its heat insulation properties can be effectively utilized.

Next, an example will be explained.

Example 1 Compounding ratio Polyurethane resin raw material 100 parts Borax (30~
200 mesh) 80 parts gypsum (powder) 20 parts pearlite (average particle size 311φ) SO part First, a color steel plate with a thickness of 0.27 mm was used as the surface material 1, and aluminum foil (25 microns) was laminated on kraft paper as the back material 2. Prepare a sheet-like material. Therefore, the lower mold (as shown in the drawing) is made, and the unfoamed polyurethane resin raw material is discharged onto the lower mold, and the back material 2 and the upper mold are placed in this order, and the mold is cured for 1 to 3 minutes under heating of 60 to 70 U.

Therefore, when this composite panel was removed from the mold and the surface material 1 side was exposed to a direct flame of 900C for 10 minutes, the surface material 1
and the synthetic resin foam layer 3 were easily separated (peeled off). On the surface material side surface of the synthetic resin foam layer 3 from which the surface material 1 was removed, an inorganic foam layer, particularly a bulky foam layer made of pearlite grains 5 as aggregate, a so-called heat insulating layer, was formed. Therefore, this was exposed to direct fire at 900C for 30 minutes, but no change was observed in the resin foam layer except that the inorganic foam layer became ceramic.

What has been described above is only one example of the composite panel according to the present invention, and even if other inorganic powder or granules are added and mixed in the synthetic resin foam layer or between the front and back materials and the synthetic resin foam layer,
It is of course possible to add these, although the above performance does not change much.

As described above, according to the composite panel of the present invention, when exposed to high temperatures such as direct flame, a fire-resistant and heat-insulating layer consisting of inorganic foam layers is formed in sequence, and the fire-resistant layer is protected. It also has water vapor reinforcement, and combined with the inorganic granular layer of pearlite particles formed during molding, it has unparalleled fire and heat resistance. Moreover, its use is not limited to simple panels, but has the advantage that it can also be used as partition plates and other fireproof walls.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a composite panel according to the present invention. 1001 Surface material, 200. Back material, 3540 synthetic resin foam layer, 4. ．． ．． Inorganic powder layer, 590. Inorganic granule layer. Figure 1

Claims (1)

[Claims] (1) A synthetic resin foam layer is provided between the nonflammable surface material and the back material, and inorganic powder consisting of two or more types such as borax and gypsum is applied between the foam layer and at least one of the front and back materials. A composite panel characterized in that a layer is provided, a layer of inorganic granules such as perlite particles is laminated between the powder layer and the synthetic resin foam layer, and these components are bound into one body when the synthetic resin is foamed.