JPH0932155A - Fire-resisting panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the sheath material, particularly a fire-resisting panel having heat-insulating properties, sound-insulating properties, fire resistance, appearance properties and strength in sandwich structure having a street type connecting section, of a building and a structure. SOLUTION: In a fire-resisting panel 1, which has structure, in which a core material 4 consisting of a synthetic resin is sandwiched by long-sized surface material 2 and rear material 3 composed of a metal sheet, and in which a male type connecting section 9 and a female type connecting section 14 are mounted on the side wall of the structure, a fire-resisting material 6 made up of one kind or more of organic and inorganic granules having fireproof performance is added in the quantity of the density of approximately 80-400kg/m<3> of core material 4 itself to a 100 pts.wt. synthetic resin component. An irregular pattern having an irregular shape in depth of approximately 0.1-3mm is formed to the surface material 2 while a vent-hole forming member 7 is interposed integrally between the rear 2a of the surface material 2 and the core material 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to construction,
It can be used as an exterior wall material, roof material, ceiling material, floor material, partition material, fire door, etc.
The present invention relates to a fire-resistant panel that is free from deformation such as peeling and has excellent water resistance and mechanical strength.

[0002]

2. Description of the Related Art In general, many composite panels in which a core material made of a synthetic resin foam is sandwiched between a front material made of a thin metal plate material and a back material, have been invented, devised, and put on the market.

[0003]

However, in a composite panel having such a structure, the surface material and the back material are deformed in greatly different directions by being pulled toward the heating side due to a difference in heat conduction under high heat. As a result, a gap is formed in the connecting portion, from which heat and flame leak to the opposite side, and J
There was a drawback that the test for the refractory structure of IS-A-1304 for 1 hour could not be passed. Furthermore, this type of composite panel, particularly a composite panel manufactured by discharging a core material in a liquid state, a granular state, or the like, has the following disadvantages.

That is, when a resol-type phenol foam is used as a core material, the core material shrinks as a result of evaporation of free water, condensed water, and unreacted water with time by solar heat. Moreover, this component is contained in an amount of about 12 to 20%, and this moisture deteriorates the coating film and the foam itself over time. The metal surface material expands due to solar heat, while the core material lacks elasticity and is brittle than other plastic foams, so the core material cannot follow the deformation of the surface material, causing cohesive failure and the surface material sticking. Impairs appearance. Since the core material absorbs water, it is necessary to sufficiently enhance waterproofness during panel construction. The adhesion strength between the surface material and the back surface material and the core material is weak, and the boundary portion of the core material at the contact portion between the surface material and the back surface material and the core material peels off by a slight impact. Excess gas (including water) in the core material expands in the summer, causing separation of the surface material from the core material and pseudo-destruction. The joint between the panels is the weakest point in terms of fire resistance, and a special board must be integrally interposed in that part.
Since the resole-type phenol resin contains about 20% of water in the tissue, it is evaporated by heat from the outside, which causes a dimensional change of the phenol foam. There were disadvantages.

[0005]

In order to eliminate such drawbacks, the present invention provides a plastic core material which is usually adhesive, elastic, polyisocyanurate foam which carbonizes under high heat, or about 20-40. % Of a phenolic component and an isocyanate component as a main material, a large amount of fine refractory material is mixed therein, and the density of the core material is 80 to 40.
By setting 0 kg / m ^3rd place, JIS-A-1304
The fireproof structure of 1 hour can pass the test, and the generation of surplus gas is reduced by modifying the core material itself and adding inorganic powder. Furthermore, the surface material has an uneven pattern of about 0.1 to 5 mm. Or, it is formed non-directionally, and the vent hole forming member is integrally provided between the back surface of the core material and the back surface of the surface material, so that the gas pressure in the core material is reduced by the synergistic effect of the space with the uneven pattern. The surface material and the core material are reduced to 1/20 to 1/40, and further, the mechanical strength is improved by forming a concavo-convex pattern and the deterioration of the coating film due to an acid catalyst is minimized. The present invention proposes a fire-resistant panel in which the boundary strength is prevented from being destroyed due to the adhesive strength between them, the cushioning effect of the ventilation hole forming member, etc., and the foaming ratio and the heat insulating property are also greatly improved.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a fireproof panel according to the present invention. 1 and 2 (a) to 2 (c) are a perspective view and a plan view showing a typical example of a fire-resistant panel according to the present invention, and 1 is a fire-resistant panel, 2
Is a surface material, 3 is a back surface material, 4 is a core material, and is a synthetic resin foam layer 5, a refractory material 6 mixed in the synthetic resin foam layer 5, a back surface 2a of the surface material 2 and a core material 4 which are integrated with each other. The ventilation hole forming member 7 and the inorganic board 8 interposed at predetermined positions of the male connecting portion 9 and the female connecting portion 14 are integrally formed. 2A to 2C are plan views of the decorative surface of the fireproof panel 1, in which the surface material 2 is embossed (concavo-convex) with various arbitrary patterns.

Explaining further, as the surface material 2 and the back surface material 3, thin metal plates such as iron, aluminum, copper, stainless steel, titanium, aluminum / zinc alloy plated steel plate, enamel steel plate, clad steel plate, laminated steel plate (PVC steel plate, etc.) are used. ), Sandwich steel plates (damping steel plates, etc.), galvalume steel plates, etc. (including, of course, colored metal plates coated with these in various colors) are formed into various shapes by roll molding, press molding, extrusion molding, etc. , Or as an inorganic material, or as the backing material 3 only, asbestos paper, kraft paper, asphalt felt, metal foil (Al, Fe, P
b, Cu), synthetic resin sheet, rubber sheet, cloth sheet,
One type of gypsum paper, aluminum hydroxide paper, glass fiber non-woven fabric,
Alternatively, it is made of a laminate of two or more kinds, or is made of one kind such as a sheet subjected to waterproof treatment and flame retardant treatment.

Further, the surface material 2 is either directional or non-directional at a depth of about 0.2 to 3 mm.
(C) and an uneven pattern 2b as shown in FIG. 3 are formed to improve the adhesive strength between the surface material 2 and the core material 4, the mechanical strength of the surface material 2 itself and the surface design, and a vent hole forming member. By forming the void 2c at the contact portion between the concave portion 7 and the concave-convex pattern 2b on the back surface of the surface material 2, synergistic effects such as promotion of degassing can be obtained.

The core material 4 forms a carbon skeleton under high heat, and usually has elasticity, adhesiveness, heat insulation, heat resistance and dimensional stability, is not brittle like phenol foam, and is like an acid catalyst. The synthetic resin foam layer 5 that does not deteriorate the performance of the coating film and the refractory material 6 dispersed and mixed in the synthetic resin foam layer 5, for example, the refractory material 6 made of inorganic powder, and the density thereof. Of about 80 to 400 kg / m ³ and mainly functions as a fireproof material, a fireproof material, a core material, a heat insulating material, an adhesive, a raising material, a dimension stabilizing material, a weight reducing material, and a reinforcing material.

Specific examples of the synthetic resin foam layer 5 include a polyisocyanurate foam alone, a foam mainly composed of a resol-type phenol resin and polyisocyanurate, or a foam obtained by adding ammonium polyphosphate or another flame retardant thereto. It mainly functions as a binder, an adhesive, a heat insulating material, a raising material, a reinforcing material, a fire resistant material under high heat, a cushioning material, and a waterproof material.

The refractory material 6 is mixed in the synthetic resin foam layer 5 and is bound by the synthetic resin foam layer 5,
In addition, when the synthetic resin foam layer 5 is carbonized under high heat, the carbonization rate is suppressed, and it also functions as a heat insulating material and a non-combustible material under high heat. Specifically, calcium carbonate, calcium silicate, alumina powder,
Coating aluminum hydroxide, shirasu balloon, titanium powder, unexpanded expandable graphite that expands about 3 to 30 times under high heat, expanded graphite, zeolite, graphite,
Rice husks, pearlite granules, talc stone, phenolic resin, for example, spherical, with a size of 0.05 to 1.5 mmφ,
The bulk density is 0.06 to 0.8 g / cm ³ and is made of one type such as a heat infusible type or a granular material obtained by firing the same.

The amount added to the synthetic resin foam layer 5 varies depending on the purpose, but at least the synthetic resin foam layer 5 itself is a weight that functions as a sufficient binder. For example, the overall density of the core material 4 is 80 to An amount of 400 kg / m ³ is added. Of course, when the refractory material 6 is surface-treated with a surfactant or the like, the addition amount thereof can be close to that of the close-packed structure.

The vent hole forming member 7 is mainly made of a synthetic resin foam layer 5.
Buffer layer for suppressing the deformation of the surface material 2 and the separation of the surface material 2 and the core material 4 by implanting in the boundary portion between the back surface of the surface material 2 and the core material 4 in order to remove unreacted components, unnecessary gas, etc. , Anchor material,
This is useful for exerting a high gas releasing effect by the synergistic effect of the formation of the vent holes and the uneven pattern 2b of the surface material 2.

Explaining further, the vent hole forming member 7 is made by twisting fibers into a string or the core material 4 regardless of the material.
Ingredients present in the material are substances that are dissolved or contracted by heat of reaction, etc., such as starch, ethylene glycol, paraffin, vegetable fiber, animal fiber, etc. is there. As a typical structure of the distribution, as shown in FIGS. 4 (a) and 4 (b), one layer is provided at the boundary portion of the surface material 2 and the core material 4 in the longitudinal direction of the fireproof panel 1 or at an arbitrary pitch in the orthogonal direction. Alternatively, as shown in FIG. 4C, a plurality of layers are buffered and fixed integrally with these components. In particular, FIG. 4B shows a case where the back surface of the surface material 2 is fixed to the ventilation hole forming member 7 in a point or linear shape by an adhesive agent.

Further, the ventilation hole forming member 7 is laid on the back surface of the surface material 2 at a predetermined pitch, for example, a pitch of about 10 to 200 mm so as to be parallel or orthogonal to the longitudinal direction of the fireproof panel 1, and the thickness thereof is 0. It is a product obtained by twisting a large number of fibers at about 0.5 to 10 mmφ, or a product obtained by further knitting the same.

As shown in FIG. 1, the inorganic board 8 is a rectangular plate having a length corresponding to the cross-sectional shape of the side surfaces of the male connecting portion 9 and the female connecting portion 14 and having one end having an inclined surface and a length of 1 to 2 m. Mainly used for strengthening the fire resistance of the connecting part α shown in FIG. 5, and for example, calcium silicate plate, calcium carbonate plate, gypsum board, perlite cement plate, rock wool plate, slate plate, ALC plate, PC plate, Other inorganic lightweight bodies,
Inorganic lightweight foam, or one or more of these composite plates, or ultra-high density resin (high-density phenol foam, etc.) is used for the male type connecting portion 9 and the female type connecting portion 14 of the fireproof panel 1.
It is to intervene in one.

In the male type connecting portion 9, an inorganic board 8, a fixture accommodating groove 10, a guide and an upper protrusion 11 for strengthening the engaging force, and a fitting insertion recess 12 into which a main projection described later is inserted are made of synthetic resin. It is a side end portion that is integrally fixed by the layer 5. More specifically, the cover portion 15 of the female type coupling portion 14 is configured to include the step portion 13 formed so as not to project from the decorative surface 2d of the surface material 2 and to be accommodated substantially flush with each other.

The female type connecting portion 14 is composed of an inorganic board 8 as a fireproof reinforcing material, an insertion groove 16 for fitting with the upper protrusion 11, and a main convex portion 17 for being fitted into the fitting / inserting groove 12.
A packing material 15a is formed on the cover portion 15, and examples of the packing material 15a include polyvinyl chloride type, chloroprene type, chlorosulfonated polyethylene type, ethylene propylene type, asphalt impregnated polyurethane type, EPM, EPDM. Etc. are generally commercially available and are mainly useful as a function of a waterproof material, an airtight material and the like. Of course, the packing material 15a having fire resistance is rock wool felt, ceramic wool, or the like.

Example 1 Polyisocyanurate foam (a) 60 parts by weight of polyol (b) 170 parts by weight of polyisocyanate (MDI) (c) 40 parts by weight of foaming agent (alternative CFC 141b) (d) foam stabilizer Agent (Toray Silicon 193H) 2 parts by weight (e) Catalyst (trade name: DABCO) 5 parts by weight (f) Calcium carbonate (200 mesh) 100 parts by weight (g) Aluminum hydroxide (coating coating) 100 parts by weight (h) Vent hole forming member 7 10 parts by weight However, the vent hole forming member 7 is a string-like object in which a cotton thread is twisted to a diameter of about 5 mmφ, and the longitudinal direction is 600 mm width (effective width of the decorative surface 2d of the fireproof panel 1) at 60 mm intervals. Was laid in parallel with and was directly fixed as shown in FIG. Also,
(G) was coated with a minimum thickness of resin, starch, etc. by spray gun, dobbing, etc.

(Example 2) In the case of phenol foam (a) 100 parts by weight of polyol (b) 144 parts by weight of polyisocyanate (MDI) (c) Foaming agent Same as Example 1 (d) Foam stabilizer Example 1 and Same (e) 100 parts by weight of calcium carbonate (200 mesh) (f) 50 parts by weight of unexpanded expandable graphite (g) 100 parts by weight of aluminum hydroxide (h) Vent forming member 7 Same as Example 1, except that ( h) has the structure shown in FIG. Also,
About 30% of the polyol (a) is a polyol containing a bonded phenol group.

Comparative Example In the case of phenol foam (a) 100 parts by weight of resol type phenol resin (nonvolatile content 80%, viscosity 2000 cps / 20 ° C.) (b) curing agent 20 parts by weight (65% paratoluene sulfonic acid aqueous solution) ( c) Blowing agent 13 parts by weight (Alternative CFC 141b) (d) Additive 5 parts by weight (silicone, ammonium polyphosphate, etc.) The structure is the fireproof panel 1 in which the vent hole forming member 7 is not embedded.

Further, in Examples 1 and 2, the front surface material 2 and the back surface material 3 are color steel plates having a thickness of 0.5 mm, and the raw materials of the synthetic resin foam layer 5 are mixed, reacted and foamed to have a density of 150.
A fireproof panel 1 having a thickness of 50 mm, which was set to kg / m ³ (Example 1) and 180 kg / m ³ (Example 2), was manufactured. The comparative example is a sandwich panel having a density of 100 kg / m ³ and a thickness of 50 mm. Further, the inorganic board 8 is a calcium silicate plate (incombustible No. 1061) with a thickness of 10 m.
m, widths of 30 mm and 40 mm, and length of 1800 mm are connected.

Therefore, the fireproof panel 1 having the basic constitution as shown in FIG. 1 was constructed from Examples 1 to Comparative Example. Next, with respect to the fireproof panel 1, a test according to JIS-A-1321, a test according to JIS-A-1301, and a test according to J
Test by IS-A-1304, is strength at 10% strain, is heated by a floodlight, and the surface temperature is raised to 85 to 95 ° C. and maintained for 3 days. The pressure sensor is AB type 50PSI manufactured by Kronell Co., Ltd., and the conduit diameter is 1.5 mmφ. The gas pressure in the comparative example was 0.3 kg / cm ² for several hours after production at room temperature, and after heating, it became as shown in Table 1 below. Is JIS-A-161
Perform according to 3 (The size of the test piece is 50 mm x 5
0 mm).

The results are shown in Table 1 below.

[Table 1]

In the comparative example, the reason for the failure is that the back surface temperature is 260 ° C. or higher.

In this case, there is no escape path for the gas when the phenol resin is dispersed, and a gap is created between the surface material 2, the back surface material 3 and the core material 4, and a flame leaks from this part to the back surface or the core material 4 It is due to the destruction of the organization. further,
Example 1 was a fire-resistant panel 1 which was excellent in adhesive strength, elasticity and strength due to the polyisocyanurate foam, and which did not have a fire resistance reinforcement by an additive and the polyisocyanurate foam wetted well and did not absorb water. The fireproof panel 1 of Example 2 completely overcomes the brittleness of the phenol foam.

What has been described above is only the embodiment of the fireproof panel 1 according to the present invention, and the fireproof panel 1 may be formed as shown in FIGS. 6 (a) to 6 (c). That is, (a) shows that the ventilation hole forming member 7 is buried in the void 2c, and the ventilation hole forming auxiliary member / fireproof reinforcing layer 18 (hereinafter, simply referred to as a fireproof layer) is provided thereon. As a synthetic resin foam layer 5
Which exhibits a cushioning function, a ventilation function, and a fireproof reinforcement function between the surface material 2 and the surface material 2, for example, a glass fiber mat, a bundle, a rock wool mat (low density), a carbonized synthetic resin fiber mat,
A fire-resistant sheet having a foamable coating (including a net-like shape), and a net-like material having a thickness of about 0.5 to 10 mm,
The density is low, about 10 to 50 kg / m ³ .

FIG. 6B shows the fireproof panel 1 when the fireproof layer 18 functions as the vent hole forming member 7. Further, in FIG. 7C, about 0.
A plurality of through holes 19 having a diameter of about 5 to 2 mmφ and a surface material 2
Is a fire-resistant panel 1 in which holes have been drilled up to the vicinity of the back surface 2a to enhance degassing.

7 (a) and 7 (b) show the fireproof panel 1
It is sectional drawing which shows the other Example of this.

[0030]

As described above, according to the fire-resistant panel of the present invention, unnecessary gas generated during the reaction is greatly reduced by polyisocyanurate and the like, and is leaked to the outside through the cell film. Does not reduce the adhesive strength of the core material for a long period of time. The fire resistance weakness of polyisocyanurate foam was strengthened by the addition of a fire preventive material such as inorganic powder, so that the fire resistance test could be passed. By the synergistic effect of the concavo-convex pattern of the vent hole forming member and the surface material, gas swelling is removed, peeling of the surface material and the core material is prevented, and a beautiful appearance can be maintained for a long time. There is no destruction of the coating film on the back surface of the surface material. Despite increasing the core material density to 80 to 400 kg / m ³ , peeling and swelling between the surface material and the core material can be prevented. When the ventilation hole forming member is planted between the surface material and the plastic foam, the gas pressure is further reduced, and various problems can be greatly improved. Fire resistance and fire resistance can be more surely improved by adding the resol type phenol resin powder. In the production of various foams, since the refractory material is fine, it can be mixed very easily and a desired foam can be formed. There are features and effects such as.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a fireproof panel according to the present invention.

FIG. 2 is a plan view showing an embodiment of a decorative surface of the fireproof panel according to the present invention.

FIG. 3 is an explanatory view showing an enlarged main part of the fireproof panel according to the present invention.

FIG. 4 is an explanatory view showing another embodiment of the fireproof panel according to the present invention.

FIG. 5 is an explanatory view showing an embodiment of a connecting portion of the fireproof panel according to the present invention.

FIG. 6 is an explanatory view showing another embodiment of the fireproof panel according to the present invention.

FIG. 7 is an explanatory view showing another embodiment of the fireproof panel according to the present invention.

[Explanation of symbols]

 α Connection part 1 Adhesive 1 Fireproof panel 2 Surface material 2a Back surface 2b Concavo-convex pattern 2c Void 2d Decorative surface 3 Backside material 4 Core material 5 Synthetic resin foam layer 6 Fireproof material 7 Vent forming member 8 Inorganic board 9 Male connection part 10 Fixture storage groove 11 Upper protrusion 12 Fitting and inserting groove 13 Step portion 14 Female connecting portion 15 Cover portion 15a Packing material 16 Inserting groove 17 Main convex portion 18 Vent formation assisting member and fireproof reinforcement layer 19 Through hole

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[Procedure amendment]

[Submission date] August 10, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

Example 2 In the case of phenol- modified polyurethane foam (a) 100 parts by weight of polyol (b) 144 parts by weight of polyisocyanate (MDI) (c) Foaming agent Same as Example 1 (d) Foam stabilizer Example Same as 1 (e) 100 parts by weight of calcium carbonate (200 mesh) (f) 50 parts by weight of unexpanded expansive graphite (g) 100 parts by weight of aluminum hydroxide (h) Vent forming member 7 Same as Example 1 , (H) have the structure shown in FIG. Also,
About 30% of the polyol (a) is a polyol containing a bonded phenol group.

Claims (2)

[Claims] 1. A core material is formed between a surface material and a back material made of a long plate material, and male connecting parts are provided on both side surfaces in the longitudinal direction thereof.
In a long fireproof panel provided with a female connecting part, the core material is a fireproof material consisting of one or more kinds of organic and inorganic powdery granules exhibiting fire resistance in a synthetic resin foam layer forming a carbon skeleton under high heat. The material is mixed in an amount such that the density of the core material itself is about 80 to 400 kg / m ³ with respect to 100 parts by weight of the synthetic resin component, and the surface material is provided with an uneven pattern with a depth of about 0.1 / 3 mm. At the same time, a fireproof panel is characterized in that a vent hole forming member is integrally interposed between the back surface of the surface material and the core material. 2. The fire resistant panel according to claim 1, wherein a long inorganic board having a short width is provided along the side wall on at least the side surfaces of the male connecting portion and the female connecting portion.