JPH0932153A - Fire-resisting panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a panel available as a heat-insulating material, a fire- protective material, interior and sheathing materials, the core materials of various panels, etc., by using a polyisocyanate form as a main material, mixing inorganic powder with the main material and keeping the density of the core material within a specific range. SOLUTION: A surface material 2 and a rear material 3 are molded from a sheet metal such as iron, aluminum, etc., by roll molding, extrusion molding, etc. A core material 4 is formed of a synthetic-resin foamed layer 5 and a fire-resisting material 6 consisting of inorganic powder dispersed and mixed in the foamed layer 5. The inorganic powder is mixed so that the density of the fire-resisting material 6 reaches 100-500kg/m<3> at that time. A fire-resisting reinforcing layer 8 is formed between one surface of the surface material 2 and the rear material 3 and the core material 4, and cushioning action is reinforced. A vent-hole forming member 7 is interposed integrally to at least one of sections, in which the surface material 2, the rear material 3 and the core material 4 are brought into contact. A vent-hole auxiliary member 8 is interposed. Consequently, the functions of vent holes and the fire-resisting reinforcing layer are displayed. Accordingly, a gas generated at the time of a reaction is reduced largely, and adhesive strength is not lowered for a prolonged term.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to construction,
A fire-resistant panel that can be used as an outer wall material, ceiling material, floor material, partition material, fire door, etc., and is free from deformation such as swelling, warping, peeling, etc. after manufacturing, and has excellent fire resistance and mechanical strength. is there.

[0002]

2. Description of the Related Art In general, many composite panels in which a thin plate-shaped surface material and a back surface material sandwich a core material made of a synthetic resin foam have been invented, invented 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 the resol type phenol foam is used as the core material,
As a result of solar heat, free water, condensed water, and unreacted water in the core material evaporate over time, so that the core material contracts as a whole. The surface material made of metal expands due to solar heat, whereas the core material made of phenol foam lacks elasticity and is brittle compared to other plastic foams, so the core material cannot follow the deformation of the surface material and cohesive failure occurs, causing surface material Is pekoe and spoils the appearance. Since the core material is water-absorbing, it is necessary to sufficiently enhance waterproofness when constructing the composite panel. The strength of adhesion between the surface material, the back surface material and the core material is weak, and a slight impact causes the surface material, the back surface material and the core material to be peeled off, particularly at the ends. In particular, surplus gas is generated during the high temperature of midsummer (when the surface material is heated). There were disadvantages.

[0004]

In order to eliminate such drawbacks, the present invention uses a polyisocyanurate foam, which is usually adhesive and elastic and carbonizes under high heat, as a main material in order to eliminate such drawbacks. A large amount of fine inorganic powder is mixed in and the density of the core material is set to 100 to 500 kg / m ³ to pass the JIS-A-1304 fireproof structure 1 hour test, and the surface material and the core are usually exposed to solar heat. It does not break at the boundary with the material, reduces unnecessary gas generated during core material formation, improves mechanical strength, does not deteriorate the coating film with acid catalyst, etc., and also greatly improves the foaming ratio and heat insulation. The proposed fireproof panel.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a fireproof panel according to the present invention. FIG. 1 (a)-
(D) is sectional drawing which shows the typical example of the fireproof panel which concerns on this invention, 1 is a fireproof panel, 2 is a surface material, 3 is a back surface material, 4 is a core material, and synthetic resin foam layer 5 and this composite. A refractory material 6 mixed in the resin foam layer 5, or a vent hole forming member 7,
Alternatively, it has a structure in which the vent hole auxiliary member and the fireproof reinforcing layer 8 are arranged.

To further explain, the front surface material 2 and the back surface material 3 are thin metal plates such as iron, aluminum, copper, stainless steel,
Titanium, aluminum / zinc alloy plated steel plate, enameled steel plate,
Roll forming, press forming, extrusion forming, etc. of one type of clad steel plate, laminated steel plate (PVC steel plate, etc.), sandwich steel plate (damping steel plate, etc.), galvalume steel plate, etc. Molded into various shapes, or as an inorganic material, or as the backing material 3 only, asbestos paper, kraft paper, asphalt felt, metal foil (Al, Fe, Pb, Cu), synthetic resin sheet, rubber sheet, cloth sheet, plaster. It is made of one kind of paper, aluminum hydroxide paper, glass fiber non-woven fabric or the like, or a laminate of two or more kinds thereof, or one kind of sheet that is waterproofed or flame-retarded.

The core material 4 forms a carbon skeleton under high heat, and usually has elasticity, adhesiveness, heat insulation, heat resistance, and dimensional stability, does not swell like phenol foam, and has acid catalyst. As described above, the synthetic resin foam layer 5 which does not deteriorate the performance of the coating film and the refractory material 6 made of inorganic powder dispersed and mixed in the synthetic resin foam layer 5 have a density of about 100 to 500 kg / m becomes a ³ mainly refractory material, core material, heat insulating material, adhesive, dimensional stability material, and functions as a reinforcing material.

Specific examples of the synthetic resin foam layer 5 include a polyisocyanurate foam alone or a foam obtained by adding ammonium polyphosphate or other flame retardant thereto, and is mainly used as a binder, an adhesive, a heat insulating material, and 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 in a normal state, is bound by the synthetic resin foam layer 5, and when the synthetic resin foam layer 5 is carbonized under high heat, the carbonization rate is increased. 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, expanded graphite, zeolite, graphite, rice husks, pearlite grain powder, For example, talc stone and phenol resin are spherical and have a diameter of 0.005 to 1.5 mm and a bulk density of 0.06 to
It is 0.8 g / cm ³ and is made of one type such as a heat infusible type or a granular material obtained by firing this.

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 100 to 100. An amount of 500 kg / m ³ is added. Of course, when the refractory material 6 is surface-treated with a surface active agent or the like, the amount of addition can be up to an amount close to the close packing structure.

The vent hole forming member 7 is mainly made of a synthetic resin foam layer 5.
It serves to disperse unreacted components, unnecessary gas components, etc., of the core material 4 to the outside of the core material 4 and as a cushioning material against heat and volume changes between the surface material 2 and the core material 4. A string-like material, or a thread-like material mainly composed of a substance that dissolves or contracts depending on the components present in the core material 4, for example, starch, ethylene glycol, paraffin, vegetable fiber, animal fiber, etc. It is configured into a shape. The distribution is formed as shown in FIGS. 2A to 2E, and one layer or a plurality of layers are laminated at an arbitrary pitch in the longitudinal direction of the fireproof panel 1 or in a direction orthogonal to the fireproof panel 1 and fixed integrally with these components. To do.

As shown in FIG. 1C, the ventilation hole auxiliary member / fireproof reinforcement layer 8 (hereinafter simply referred to as a fireproof layer) mainly functions as a ventilation hole assistance function and a fireproof reinforcement layer. A sheet, a net-like material, a mat-like material, which is interposed between the core material 4 and the core material 4, and is mainly composed of one or more kinds of glass fiber, rock wool, cellulose fiber, carbon fiber, fiber carbonized under high heat, and the like. Alternatively, these fibers are subjected to interface treatment, flame retardant treatment, carbonization promoting treatment (polyphosphoric acid), or the like.

The length of the cellulose fiber is 10-5.
It has a thickness of about 0 μm and a thickness of about 0.5 to 10 μm, and is distributed at a high density in the boundary portion between the core material 4 and the surface material 2 to exert the above-mentioned predetermined function. Further, FIG. 3 is a cross-sectional view showing a construction state.

Example 1 In the case of 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-making Agent (Toray Silicon 193H) 2 parts by weight (e) Catalyst (trade name: DABCO) 5 parts by weight (f) Calcium carbonate (100 mesh) 200 parts by weight (g) Unexpanded expandable graphite (diameter 0.05 mmφ) 100 parts by weight

Example 2 (a) Same as Example (b) Same as Example (c) Same as Example (d) Same as Example (e) Same as Example (f) Same as Example (G) Vent hole forming member 7 (a string of cotton yarn having a diameter of 5 mmφ) 10 pieces / 10 cm apart were arranged in the longitudinal direction of the fireproof panel 1 as shown in FIG. 1 (b).

(Comparative Example) In the case of phenol foam (a) Resol type phenol resin 100 parts by weight (nonvolatile content 80%, viscosity 2000 cps / 20 ° C.) (b) Curing agent 20 parts by weight (65% paratoluene sulfonic acid aqueous solution) (C) Foaming agent 13 parts by weight (Alternative CFC 141b) (d) Additive 5 parts by weight (silicone, ammonium polyphosphate, etc.) (e) Catalyst 3 parts by weight Further, in Examples 1 and 2, the surface material 2 and the back surface material were used. 3 to 0.5 m
m color steel plate, the core material 4 is mixed and reacted as described above,
Foamed to form a density of 200 kg / m ^{3 and} have a thickness of 50 m
m fireproof panel 1 was manufactured. The comparative example has a density of 100.
The sandwich panel has a thickness of 50 mm at kg / m ³ .

Therefore, for the fireproof panel 1 having the constitutions of Examples 1 to Comparative Example, is a test according to JIS-A-1321, is a test according to JIS-A-1301, is a JIS-A-1301.
A-1304 test, 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 PSI manufactured by Cronell Co., Ltd., and the conduit diameter is 1.5 mmφ. In addition,
The gas pressure in the comparative example was 0.3 kg / cm ² for several hours after production at room temperature. Is JIS-A-1
613 (test piece size is 50 × 5)
0 mm).

The results are shown in Table 1 below.

[Table 1]

3 has a structure shown in FIG. 3, A and B are calcium silicate plates having a thickness of 10 mm and widths of 20 mm and 40 m.
The m and the length are almost the same as the length of the fireproof panel 1.
Also, in the comparative example, the reason for the failure is that the backside temperature is 2
That is, the temperature became 60 ° C or higher.

In this case, there is no escape path for the gas when the phenol resin is decomposed, 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 portion 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 was reinforced by the additive and did not get wet with the polyisocyanurate foam and had good water absorption. About Example 2, it was the fire-resistant panel 1 which reduced the weak point of the phenol foam to the maximum.

What has been described above is only an embodiment of the fireproof panel 1 according to the present invention. As shown in FIG. 4, a fireproof layer 8 is provided at least between the surface material 2 and the back material 3 and the core material 4. By strengthening the cushioning action between the core material 4, the front surface material 2 and the back surface material 3,
Moreover, it functions as a vent and a fireproof reinforcement layer. Examples of the material of the fireproof layer 8 include a glass fiber mat, a bundle, a rock wool mat (low density), a carbon fiber synthetic resin fiber mat, a fireproof sheet having a foamable coating (including a net shape), and net-like materials thereof. And the thickness is 0.
5 to 10 mm, low density of 10 to 50 kg
/ M ^3rd place.

As another embodiment, the structure shown in FIG. 5 can be adopted. In this case, fire resistance and reinforcement (strength, gas exhaust, adhesion, cushioning) can be greatly improved.

Further, as shown in FIGS. 6 (a) to 6 (c), in addition to forming the refractory material 6, the vent hole forming member 7 and the fireproof layer 8 at appropriate positions with respect to the core material 4, other sheet 9 is formed. It is also possible to provide the fire-resistant panel 1 in which (non-woven cloth, thread, string, paper, non-combustible sheet, fire-resistant dew-exposed sheet) is arranged to further improve fire resistance, strength, ventilation and the like.

7 (a) to 7 (c) and FIG. 8 are sectional views showing another embodiment of the fireproof panel 1 according to the present invention. C is a packing material.

[0025]

As described above, according to the fireproof panel of the present invention, unnecessary gas generated during the reaction is greatly reduced by using polyisocyanate as a core material.
Moreover, since it is released to the outside through the cell film, the adhesive strength between the surface material, the back surface material and the core material is not lowered for a long period of time. The weakness of polyisocyanurate foam in fire resistance can be strengthened by adding an inorganic powder, and the performance that can pass the fire resistance test can be improved. In a fire-resistant panel using phenol foam as a core material, the acidity (about PH2) in the phenol foam can be kept low at PH5 by the inorganic powder, and the strength of the coating film can be strengthened to about 4 times that of the conventional one. When the ventilation hole forming member is transferred between the surface material and the plastic foam, the gas pressure is further reduced, and various problems can be greatly improved. The 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 inorganic powder is fine particles, they 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 an explanatory view showing an embodiment of a fireproof panel according to the present invention.

FIG. 3 is an explanatory diagram showing an example of a connecting portion 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 another embodiment 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.

FIG. 8 is an explanatory view showing another embodiment of the fireproof panel according to the present invention.

[Explanation of symbols]

 1 Fireproof Panel 2 Surface Material 3 Back Material 4 Core Material 5 Synthetic Resin Foam Layer 6 Fireproof Material 7 Vent Forming Member 8 Vent Auxiliary Member and Fireproof Reinforcing Layer 9 Sheet

Claims (6)

[Claims] 1. A composite panel in which a core material made of a synthetic resin foam layer that forms a carbon skeleton under high heat is integrally interposed between a surface material and a back surface material, and a composite panel made of a fire-resistant organic or inorganic powder is used. A refractory panel, characterized in that a refractory material is mixed with 100 parts by weight of a core material so that a core material density is about 100 to 500 kg / m ³ . 2. The refractory material is calcium carbonate, non-expandable expanded graphite, expanded graphite, calcium silicate, carbonized powder, alumina powder, aluminum hydroxide, shirasu balloon, titanium powder, zeolite, perlite, silica sand, vermiculite, The fire-resistant panel according to claim 1, comprising at least one of graphite, stable phenol resin powder granules, and the like. 3. The fire-resistant panel according to claim 1, wherein a vent hole forming member is integrally interposed in at least one of the portions where the surface material, the back surface material and the core material are in contact with each other. 4. The fire resistant panel according to claim 1, wherein the core material is mixed with one or more kinds of carbonized fiber, non-combustible fiber, resol type phenol resin powder flame retardant, and the like. . 5. A vent hole auxiliary member and a fireproof reinforcing layer made of at least one of a non-combustible fiber mat and a short fiber layer are integrally interposed between the surface material, the back surface material and the core material. ,
A fire-resistant panel according to any one of items 3 and 4. 6. The fire-resistant panel according to claim 5, wherein the vent hole assisting member / fireproof reinforcing layer is treated with a surfactant.