JPS594304B2 - fireproof panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fireproof panel in which a granular fireproofing material made by granulating sodium metaborate, borax, a binder, etc. into an integrated particle body is mixed into a synthetic resin foam layer, etc.

It has been well known that borax and water glass powders of 150 to 250 microns foam when heated rapidly.
For example, it has already been carried out to mix and fill a foamable synthetic resin to form a flame-retardant synthetic resin composition. However, simply adding an inorganic substance that foams when heated to a synthetic resin cannot be expected to form an inorganic foam layer to immediately protect the synthetic resin layer when it is exposed to high temperatures or direct flame. That is, it is difficult for the powdered inorganic material particles scattered in pieces to bridge together and form a complete fireproof layer. Therefore, in order to reliably form a fireproof layer, it is necessary to add and mix a large amount of the above substances. When added in this manner, flame retardancy is certainly greatly improved. On the other hand, synthetic resin foams have excellent physical properties, so-called light weight and high heat insulation properties, but their cushioning properties, workability, and mechanical strength (particularly in bending) are significantly reduced. Moreover, the reaction system of the synthetic resin foam is disturbed and the foam structure is damaged, which not only increases the amount of expensive resin used and increases the cost of production, but also prevents the product from exhibiting its original properties. The present invention solves these drawbacks all at once.In particular, the foaming inorganic material is not used alone, but is combined (in a coexistence state) with two or more of them and a binder25 or other inorganic materials, walls, etc. We propose a granular fireproofing material made by adding a film material, and a fireproof panel that foams more violently, rapidly and on a large scale when heated rapidly, and protects a synthetic resin foam layer with a dense inorganic foam layer.

30 and below, one embodiment of the fireproof panel according to the present invention will be described in detail using the drawings.

FIG. 1 is an explanatory diagram showing a fireproof panel according to one invention. That is, FIG. 1 shows a granular fire retardant material 4 in which sodium metaborate, borax sand, and a binder are granulated into integrated particles in a synthetic resin foam layer 3 interposed between the surface material, back material 1, and 2. It is an explanatory view showing fireproof panels distributed appropriately. Also the second
The figure is an explanatory diagram showing a fireproof layer C panel according to another invention, in which sodium metaborate, borax, and a binder are integrated into a synthetic resin foam layer 3 interposed between a surface material 1 and a back material 2. This is a fireproof panel in which granular fireproofing material 5 is distributed, which is granulated into particles and whose outer surface is coated with a wall film material.

Furthermore, FIGS. 3A and 3B show a fireproof panel according to another invention, in which FIG. 3A shows a granular fireproofing material 4, and FIG. FIG. 3 is an explanatory diagram of a fireproof panel distributed at high density (in the figure, interposed between the back material 2 and the synthetic resin foam layer 3) on at least one of the layers. To explain in more detail, the front and back materials 1 and 2 are arbitrary members such as metal plates, mortar cement boards, gypsum boards, slate boards, waterproof paper, aluminum foil, thin metal plates, resin films, etc.
If this is also normal, there is no need to set a limit. The synthetic resin foam layer 3 contains granular fireproofing materials 4, 5, etc., and the front and back materials 1, 2 are integrally bound during foaming. For example, it is formed from a thermosetting resin such as polyurethane foam, polyisocyanurate foam, or phenol foam, or a thermoplastic resin such as polystyrene or polyethylene. To explain in more detail, the bonding material is, for example, one of CMC, PVAl, etc., and the wall material is, for example, synthetic resin (PVA, CVC, acrylic resin, vinyl acetate).
, paraffin, gelatin, etc.

Note that the wall film material mainly smooths the outer surface of the granular fireproofing material, improves "wetness" with the raw material for forming the synthetic resin foam layer 3, and allows the granular fireproofing material to be evenly distributed within the foamed layer 3. Moreover, the moisture content decreases due to efflorescence of sodium metaborate and borax, etc.
This makes it possible to significantly suppress so-called deterioration. Then, add the required amount depending on the purpose. Further, these granular fireproofing materials 4 and 5 are added in an amount of about 30 to 200 parts by weight to the synthetic resin foam layer 3 (100 parts by weight). In addition, the average particle size is approximately 3 mmφ as a standard, and the surface area of the additive is greater than when adding the same weight of powdered fire retardant as in the past.
It is much smaller. The fireproof panel formed in this manner is also excellent in fire resistance, heat resistance, heat insulation properties, and mechanical strength.

That is, the above-mentioned granular fireproofing material itself foams rapidly and greatly at high temperatures, especially when exposed to an open flame. In other words, sodium metaborate exhibits outstanding fire resistance because it has the physical property that even if it foams once, it will foam again if water is replenished. Furthermore, since the granular fireproofing materials 4 and 5 have a binder, their granulation becomes very easy.

Furthermore, the coating with the wall film material becomes nearly complete, causing "wetting".
and moisture content, the duration will be much longer, and the moisture replenishment will increase in fire resistance. Next, embodiments of the present invention will be briefly described. Example 1 Granular fire retardant material with a compounding ratio of borax:sodium metaborate:CMC=1:1:1 and an average particle size of 3m1Lφ...1
00 parts by weight Polyurethane resin 100 parts by weight This was mixed and discharged onto the surface material (0.277E1 color metal plate), and on top of that was the back side of asbestos paper laminated with aluminum foil. A fireproof panel as shown in Fig. 1 was formed by stacking the materials and applying heat and pressure.

In this case, it was baked for 10 minutes in an open flame at about 700°C, but no deformation or combustion occurred. In particular, in this case, the granular fireproofing material releases a large amount of water vapor to cool the surrounding area, and also diffuses to cover the flammable polyurethane foam, gradually foaming and expanding, exhibiting the characteristics of both components. A large-scale inorganic foam layer was formed. What has been described above is only one embodiment of the fireproof panel according to the present invention, and although not shown, borax, sodium silicate, sodium metaborate, sodium metasilicate, dry metasilicone, etc. are used between the granular fireproofing materials 4 and 5. One or more types of inorganic powders such as acid soda, mono- to triphosphate sodium phosphates, processed substances thereof (processed sodium silicate, processed sodium borate, etc.), zeolite, soda carbonate, antimony trioxide, perlite powder, clay powder, Or (and) inorganic particles such as pearlite particles and shirasu balloons can also be distributed.

As explained above, by making substances that have large particle sizes and foam when rapidly heated coexist with each other, and by adding a hydration substance for further foaming, it is possible to It promotes the fire extinguishing effect of growth and water vapor, and can prevent combustion and deformation of synthetic resin.

Furthermore, the amount of these granular fireproofing materials used can be extremely small compared to conventional materials due to the excellent fire-resistant and heat-resistant layer forming properties of these materials, reducing costs.Moreover, since the foam structure becomes homogeneous, there is no deterioration in mechanical strength. Moreover, it has the characteristics of a fire-resistant panel that has excellent heat insulation, processability, and binding properties inherent to resin foam, and has sufficient fire-retardant properties despite its light weight.

[Brief explanation of the drawing]

1, 2, and 3 A and b are explanatory diagrams showing one embodiment of the fireproof panel according to the present invention.〇1...
- Surface material, 2... Back material, 3... Synthetic resin foam layer, 4, 5... Granular fire prevention material.

Claims (1)

[Scope of Claims] 1. Sodium metaborate and borax are added to the synthetic resin foam layer interposed between the surface material and the back material, and one type of binder such as CMC, PVA, or lacquer is added to the synthetic resin foam layer. A fire-resistant panel characterized in that a granulated fire-retardant material is distributed in particle bodies. 2 In the synthetic resin foam layer interposed between the surface material and the back material,
Sodium metaborate, borax, and one type of binder such as CMC, PVA, or lattice are added to the mixture to form a single particle, and a granular fireproofing material whose outer surface is coated with a wall film material is distributed. A fireproof panel characterized by: 3. A granular fire retardant material, which is granulated into an integrated particle body by adding sodium metaborate and borax, and one type of binder to the same, at least on one side between the surface material, the back material, and the synthetic resin foam layer. A fireproof panel characterized in that one type of granular fireproofing material is granulated into an integrated particle body of borax and a binder, and the outer circumferential surface of the granular fireproofing material is coated with a wall film material.