JPH0267128A - Fire-resistant panel - Google Patents

Abstract

PURPOSE:To make the title panel to certainly stand a fire-resistant structure test without damaging fireproofness and fire resistance by integrally interposing fireproof foam between a thin metal plate and a core material which is integrally constituted by the closest packing of inorg. lightweight aggregates and the filling of the fireproof foam between the aggregates. CONSTITUTION:A resole type phenol foam stock is emitted to the rear of a thin metal plate to be applied thereto so as to obtain a thickness of 5mm and density of 50kg/m<2> and a core material 4 is laminated to the coating layer and the stock is further thinly emitted to the core material 4 and a thin metal plate 2 is furthermore laminated to the rear of the foam layer while the whole is cured and integrated in a mold to form a fire-resistant panel. The fireproof foam 3 penetrates into the gap parts of the surface layer of the core material 4 over about 5-10mm to fill the gaps between inorg. lightweight aggregates 5. Since the core material shows fire resistance and heat insulating properties at high temp. and effectively acts as the adhesive in the integration with other member by this constitution, this panel can stand a fire-resistant structure test.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a panel with a sandwich structure in which thin metal sheets are used as front and back materials and a special constituent material is used as a core material. The present invention relates to a sandwich-structured fire-resistant panel that can effectively utilize its performance to pass fire-resistant construction.

[Conventional technology]

Although the core material in this type of panel is lightweight, it lacks fire retardant properties, so inorganic aggregates and inorganic powders such as perlite grains, borax, vermiculite, ammonium polyphosphate, and calcium carbonate are mixed into the core material. The most common structure was a panel in which the surface layer of the core material was densely packed.

[Problem to be solved by the invention]

However, in this type of structure, the core material changes from liquid → creamy → foam → solidified foam in about 1 to 5 minutes, and the inorganic aggregate, inorganic powder, and inorganic fiber are the raw materials for the core material. Because it absorbs or adsorbs oil, it disturbs the reaction system of the raw materials, and the mixing of each component of the raw materials becomes uneven, which has a large negative effect on the foaming ratio and foam structure, resulting in increased costs and inferior mechanical strength. There was a disadvantage. Furthermore, when a resol type phenolic resin raw material is used, the condensed water during the reaction has a large adverse effect on adhesive properties, especially when the front and back materials are impermeable. Of course, in order to pass fire protection and fireproof construction, it is necessary to add a large amount of the above-mentioned inorganic materials, which reduces the weight reduction by half and makes it difficult to form a uniform fire protection layer. The above-mentioned problems also occurred in the reaction system and the foamed structure.

[Means to solve the problem]

In order to eliminate these drawbacks, the present invention eliminates the negative effects of condensed water on adhesion during the formation of phenol foam by absorbing water through the water-holding power of the inorganic aggregate of the core material, or by using a water-absorbing resin as a binder. This project proposes a fire-resistant panel that can reliably pass fire-resistant construction without compromising fire protection and fire resistance, and is also lightweight, has excellent heat insulation properties, and is highly productive.

〔Example〕

EMBODIMENT OF THE INVENTION Below, one Example of the fireproof panel based on this invention is described in detail using drawings. That is, FIG. 1 is a cross-sectional view showing a typical example of the above-mentioned fireproof panel, and 2 and 2 are thin metal plates that function as the front surface material and the back surface material,
The plate thickness is about 0.27 to 3.2 mm, and is made of one of a flat plate, an embossed plate, an extruded plate, etc.

The materials include, for example, surface-treated steel sheets, fluorine-coated steel sheets, zinc-nickel alloy plated steel sheets, aluminum/zinc alloy mesh sheets (product names: Galfan, Galvalume steel sheets, Super Zinc), aluminum sheets, aluminum alloy sheets,
It is made of one type of metal thin plate such as an aluminum composite plate, a clad steel plate, a damping steel plate, and a titanium alloy plate. In addition,
Its shape is molded depending on the cross-sectional shape of the panel. 3 is a fireproof foam that functions as an adhesive, cushioning material, and heat insulating material formed on the back side of the thin metal plate 1.2, and has a thickness of 3 to 15 mm and a density of 20 mm.
~70kg/rd. The soil is manufactured by either forming a molded body with a core material or by sequentially layering it to form the final product, and the thickness is about 15 to 50 plates.
It is lightweight and exhibits heat insulation properties even under high heat, and it also absorbs condensed water generated during the formation of the fireproof foam 3.
This is useful for eliminating foaming and deterioration of adhesiveness of the fireproof foam 3 with other members.

To explain further, the core material soil is inorganic lightweight aggregate 5 (particle size is 1
~30m+) with a nearly uniform particle size or a mixture, with a finely packed structure, and with an inorganic lightweight aggregate 5
A small amount of binder 6 is interposed between the gap or a part of the contact surface of the inorganic lightweight aggregate 5, and the inorganic lightweight aggregate 5 is integrally formed. The inorganic lightweight aggregate 5 is made of one of pearlite grains, foamed vermiculite, sericite foamed concrete grains, and foamed artificial aggregate, and has a bulk specific gravity of about 0.1 to 1.0. In addition, binders 6 include water-absorbing resins, melamine resins, raw materials for polyisocyanurates, phenolic resins (including benzylic type), gypsum, cement, calcium silicate, latex compositions, fire prevention paints (especially,
Polyphenylene resin, inorganic adhesive containing inorganic fiber (water glass may also be added to some extent), cationic and anionic adhesive, ammonium polyphosphate and rubber latex mixture, a composition consisting of expanded graphite powder and melamine resin, a glass melt, a degree of sprinkling of an inorganic melt, a novolak type phenolic resin, a fine cell structure consisting of a phenol component, methylene diisocyanate (MDI), and a blowing agent. The main structure is not to completely fill the voids between the inorganic lightweight aggregates 5, but to partially adhere them, and an organic adhesive is used to provide cushioning properties as necessary depending on the purpose. It may also be filled with.

Next, the manufacturing method will be briefly explained.

Now, a resol type phenol foam raw material is discharged onto the back surface of the thin metal plate 1 to a thickness of 5 mm and a density of 50 kg/r.
rf, layer the core material soil on top of it as shown in Figure 2, then discharge a thin layer of the raw material onto the upper left of the core material, layer the thin metal plate 2 on the back side, and place it inside the mold. The materials are cured and integrated to form a fireproof panel with a thickness of 50 mm. Further, the fireproof foam 3 penetrated into the surface voids of the core soil over a distance of about 5 to 10 m, and filled the voids between the respective inorganic lightweight aggregates 5 with the fireproof foam 3. The core soil used was one having an average particle diameter of 10 to 7 mm, partially bonded with an inorganic latex, and having a compressive strength of 1 to 20 kg/%. For fireproof panels manufactured in this way, JIS
-A-1304 fire resistance test results passed both 30 minutes and 1 hour.

[Other Examples]

What has been described above is only one embodiment of the fireproof panel according to the present invention, and as shown in FIG. In order to provide cushioning properties, the inorganic lightweight aggregate 5 may be mixed in the jelly-like molded body as shown in Fig. 4, or starch, water-absorbing resin, and gel-like substances may be mixed with the inorganic lightweight aggregate. A fireproof panel in which the aggregate 5 is integrally enclosed in a bag, or a jelly-like material and an inorganic lightweight aggregate 5 are mixed and discharged onto the fireproof foam 3, and the fireproof foam 3 raw material and the metal sheet 2 are laminated in this order, or It is like storing an inorganic lightweight aggregate 5 in an inorganic net-like material to facilitate deformation. In addition, the shapes of the fireproof panels are as shown in Figures 5 (a) to (e).
Figure 6(a)-(7,) and Figure 7(a)-(j)
It is also possible to have the cross section shown in . In addition, fire protection foam 3
are omitted and the core soil is shown schematically.

[Effects of the Invention] As described above, according to the fire-resistant panel of the present invention, the core material has fire resistance, heat insulation properties under high heat, and acts effectively as an adhesive for integration with other components, so it can be used in fire-resistant structure tests. In addition to being lightweight, it has strength and cushioning properties, and is also excellent in terms of productivity and cost.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing one embodiment of the fireproof panel according to the present invention, FIG. 2 is an explanatory diagram showing one process of the fireproof panel, and FIGS. ), Figures 6(a) to (Z
) and FIGS. 7(a) to (j) are explanatory diagrams showing other embodiments. ■, 2...Thin metal plate, 3...Fire protection foam, soil...
・Core material. Figure 2 Figure 5 (OJ Figure 2 Figure 3 Figure 4 Raw Figure (k) Figure (n+ Figure J Figure Cα Figure Otsu Figure Wa (5)

Claims (1)

[Claims] (1) A fireproof foam is integrally interposed between the thin metal plate and the core material, the core material is densely filled with inorganic lightweight aggregate, and the contact parts of each aggregate are mainly bonded together with a binder. Also, a fireproof panel characterized in that at least the fireproof foam penetrates to a certain depth on the core material side and the voids between each aggregate are filled with the fireproof foam so as to be integrally constructed.