JPH09137521A - Fire resistant heat insulating panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent peeling of a surface material and reduce the weight of a resistance heat insulating panel through mixture of a specific fire protection reinforcing material by laminating a layer of a foaming adhesive between the surface material and a core material, an anchor material like sheet, and a gas exhaust material like cord in the fire resistance heat insulating panel. SOLUTION: A painted film 4 for improving rust-proof and adhesive force is formed on rear surfaces 2a, 3a of a surface material 2 and a rear surface material 3 of a metallic sheet. A layer of a foaming adhesive 5 which also serves as a buffer material, an anchor 7 like sheet for strengthening the adhesive force, and a gas exhaust material 8 like cord having a communicating clearance are laminated on a core material 6 of plastic foam and are integrated. Moreover, a light-weight fire protection reinforcing material 9 such as foaming graphite is mixed into the layer of the foaming adhesive 5 and the core material 6. Consequently, expansion and shrinkage of the surface material 2 due to solar heat is absorbed by spring of the layer of the foaming adhesive 5, excess gas generated due to solar heat is discharged to the outside by the gas exhaust material 8 to prevent peeling of the surface material 2 and achieve the strengthening of adhesive force of the anchor 7 like sheet, and the weight of a panel is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to construction,
Can be used as outer wall material, partition material, or fire door,
Further, the present invention relates to a fire-resistant heat-insulating panel capable of preventing the plastic foam from being peeled off from a surface material and the like, and suppressing deformation of the surface material to maintain a beautiful appearance for a long time.

[0002]

2. Description of the Related Art In a panel of this type, the back surface of a surface material and a plastic foam serving as a core material are integrally bonded by self-adhesiveness of the core material itself during foaming. Moreover, an invention in which an adhesive layer is interposed between the surface material and the core material is also known due to subsequent improvements.

[0003]

However, the panel of this type and structure has problems in the following points. That is, there is a "deviation" in the expansion and contraction of the surface material and the core material due to solar radiation, and the core material peels from the back surface of the surface material.
In the core material, the foam structure deteriorates due to heat, humidity, etc. due to solar radiation,
Becomes brittle. When phenol foam is used as the core material,
Since the foam itself lacks elasticity, the "deviation" with the expansion and contraction of the surface material is even greater. An acid curing agent is indispensable in the core material of phenol foam, which destroys the adhesive and the coating film. The brittleness of the phenol foam cannot follow the deformation of the surface material, and peeling occurs between the surface material and the core material. Phenolic foam core material is brittle and is also susceptible to impact. Especially in the resol type phenolic foam, unreacted components and surplus gas are generated over time, and these are concentrated in the weak points of the adhesive force and the peeling part, and the pressure is further increased to enhance the peeling between the surface material and the core material, Spoil the appearance. Since 80% (weight ratio) of flaky aluminum hydroxide is added to enhance fire resistance, it is heavy. There were disadvantages.

[0004]

In order to eliminate such drawbacks, the present invention provides a foaming adhesive layer serving as an adhesive and a buffer between the surface material and the core material, and the foaming adhesive layer is provided on the foaming adhesive layer. A sheet material that exerts an anchor effect is adhered, and a string-shaped exhaust material is installed on this sheet material to prevent exhaust of excess gas to the outside of the core material and separation of the surface material and the core material, and A lightweight fireproof insulation panel with a structure that absorbs expansion and contraction due to the solar heat of the foam adhesive layer, and the coating film on the back of the surface material is not destroyed by the curing agent of the core material and other excess gas,
By adding expandable graphite, aluminum hydroxide particles and the like to the foam adhesive layer and the core material, it is proposed to provide a fireproof heat insulating panel which is lightweight and can reliably pass the fireproof structure test (JIS-A-1304).

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a fire-resistant and heat-insulating panel according to the present invention. 1 and 2
1 is an explanatory view showing a typical example of a fireproof heat insulating panel according to the present invention, 1 is a fireproof heat insulating panel, 2 is a surface material, 3 is a back material, 4 is a coating film, 5 is a foam adhesive layer, and 6 is Core material is plastic foam, 7 is an anchor material, 8 is an exhaust material, 9 is a fireproof reinforcing material, and is added to the foaming adhesive layer 5 and the core material 6 if necessary,
To mix.

More specifically, the refractory heat insulating panel 1 has a core material 6 integrally interposed between a surface material 2 and a back surface material 3,
Further, a fireproof heat insulating panel 1 in which a coating film 4, a foam adhesive layer 5, a sheet-shaped anchor material 7, and an exhaust material 8 are laminated and integrated between the surface material 2 and the core material 6 in this order, the foam adhesive layer 5, the core. The fireproof heat insulating panel 1 is obtained by adding and mixing the fireproofing reinforcing material 9 to at least one of the materials 6.

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) were formed into various shapes by roll molding, press molding, extrusion molding, etc. The material, or the inorganic material, or the back material 3 when it is made of a material different from the surface material 2 is asbestos paper, kraft paper, asphalt felt, metal foil (Al, Fe, Pb, Cu), synthetic resin sheet, rubber sheet, Cloth sheet, gypsum paper, aluminum hydroxide paper,
It is made of one kind of glass fiber non-woven cloth or a laminate of two or more kinds thereof, or one kind of sheet which is waterproofed or flame-retarded.

The coating film 4 includes a front surface material 2 and a rear surface 2a of the back surface material 3,
It is formed on the back surface 3a for rust prevention, adhesion strengthening, etc., and is a synthetic resin having a similarity with the core material 6 at about 3 to 10 microns, such as epoxy resin, phenol resin, polyurethane resin, polyester. The resin is made of resin, other well-known synthetic resin, or modified type synthetic resin thereof.

The foamed adhesive layer 5 has elasticity at a foaming ratio of about 2 to 20 times, functions as a buffer layer and an adhesive layer, and is formed to a thickness of about 0.3 to 5 mm. A part of it impregnates the anchor material 7. Its properties are gel, hot melt and foam. Of course,
The coating film 4 has good adhesiveness.

The core material 6 partially forms a carbon skeleton under high heat, and even in a normal state as a heat insulating material, heat resistant material, dimension stabilizing material, adhesive material, reinforcing material, bulking material, cushioning material, adhesive agent. A functional plastic foam alone, or a composition in which a fireproof reinforcing material 9 as described below is added and mixed,
Its density is about 80-400 kg / m ³ .

Specific examples of the plastic foam used as the core material 6 include phenol foam made of resol type phenol foam resin, polyisocyanurate foam,
It is mainly composed of phenol-modified urethane foam, urea foam and polyurethane foam, to which ammonium polyphosphate, a catalyst, a foam stabilizer, an acid curing agent and the like are added in correspondence with each resin.

The sheet-shaped anchor material 7 is shown in FIG.
4B, and FIGS. 4A and 4B, which are integrally fixed to the foam adhesive layer 5, and mainly consist of the foam adhesive layer 5 and the core material 6. And serves to prevent the surface material 2 and the core material 6 from peeling off. More specifically, the adhesive strength of the boundary portion between the surface material 2 and the core material 6 via the foamed adhesive layer 5 is strengthened (prevention of peeling due to the anchor effect), temperature change, and the core material 6 made of synthetic resin foam.
Buffer layer (restraining of foam destruction) against shrinkage over time of
It also serves as a heat insulating layer (carbonized layer) under high heat and as a surplus gas venting material in the core material 6, and examples thereof include rock wool fiber, glass fiber, cotton, expansive graphite, non-expandable graphite, synthetic resin. One or more types of long fibers such as fibers and carbon black are used as a raw material.

As a concrete example of the anchor material 7, a structure as shown in FIGS. 3 (a) and 3 (b) and FIGS. 4 (a) and 4 (b), that is, FIG. 3 (a) is not shown. A foam adhesive layer 5 and a core material 6 that are of a fibrous shape and that are coarse to high density
The anchor material 7a is selected in consideration of the permeability of the.

FIG. 3 (b) is a net-shaped anchor material 7b, and FIG. 4 (a) is a composite of a foam-like layer α and a sheet-like face material β, and forms a foam-like layer α. It is the anchor material 7c in which the through hole and the recessed portion γ are formed.
(B) is a string-like A having a raised θ of about 1 to 20 mm.
Is an anchor material 7d formed in a net shape.

The exhaust material 8 is integrally interposed between the anchor material 7 and the core material 6, and the surplus gas, moisture, etc. generated mainly at the boundary portion between the surface material 2 and the core material 6 are outside the core material 6. The cord-like material of about 1-10 mmφ is about 10
The fireproof heat insulating panel 1 is planted at intervals of 50 cm substantially parallel to the width direction. The exhaust material 8 has a structure having at least communicating voids in a cross section in which a large number of fibers are twisted together, a laminated cross section, a curled cross section, and the like. The material is one or more of glass wool fiber, rock wool fiber, hemp, cellulose fiber, carbon fiber, cotton, cotton, synthetic resin fiber, chemical fiber, and if necessary, an interface treatment agent, a flame retardant treatment agent,
A carbonization promoter (ammonium polyphosphate), a partial binder material, etc. are added.

As the fireproof reinforcing material 9, calcium carbonate,
Calcium silicate, alumina (including aluminum hydroxide, resin-coated flaky and beaded aluminum hydroxide), shirasu balloon, perlite, titanium powder, zeolite, expandable graphite, unexpandable graphite, carbon black, Talc stone, rice husk, resol type phenolic foam resin particles, including unfired and fired beads, have a particle size of 0.05 to 1.5 mmφ and a bulk density of 0.
It is composed of one or more of 6 to 0.8 g / cm ³ .

The amount of addition to the foaming adhesive layer 5 and the core material 6 varies depending on the purpose, but at least the foaming adhesive layer 5,
The core material 6 itself has a weight that functions as a sufficient binder, and for example, the overall density of the core material 6 is 80 to 400 k.
The amount added is g / m ³ . Of course, when the fireproofing reinforcement 9 is surface-treated with a surface active agent or the like, it is possible to make the addition amount a finely packed structure.

(Example 1) In the case of polyisocyanurate foam as the core material (a) 60 parts by weight of polyol (b) 170 parts by weight of polyisocyanate (MDI) (c) 40 parts by weight of blowing agent (alternative CFC 141b) ( d) Foam stabilizer (Toray Silicon 193H) 2 parts by weight (e) Catalyst (trade name: DABCO) 5 parts by weight Polyester resin (about 5 microns) as the coating film 4 and polyurethane resin about 5 as the foaming adhesive layer 5. A double-foamed layer having a thickness of 3 mm was entirely formed on the coating film 4. The sheet-shaped anchor material 7 is a non-woven cloth sheet made of glass fiber having a thickness of 0.5 mm as shown in FIG. 3A, and the foamed adhesive layer 5 and the core material 6 are formed in a state where the density is coarse. It is a penetrating organization. The exhaust material 8 is made by twisting a large number of cotton pieces to a thickness of about 5 mmφ and arranged at a pitch of about 15 cm. Thus, the fireproof heat insulating panel 1 having a thickness of 50 mm shown in FIG. 1 was manufactured.

(Example 2) In the case of phenol foam as the core material (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) Foaming agent 13 parts by weight (Alternative CFC 141b) (d) Additive 5 parts by weight (silicone, ammonium polyphosphate, etc.) Coating film 4, foaming adhesive layer 5, anchor material 7, exhaust material 8 Was the same as in Example 1.

(Example 3) In Example 1, about 100 parts by weight of ammonium hydroxide beads (phenol resin coating) having a particle size of 40 parts and calcium carbonate (200 mesh) were used for the foaming adhesive layer 5 and the core material 6. 100 parts by weight and particles of about 0.5 to 3 mm as expandable graphite,
It is a fireproof heat-insulating panel 1 having a thickness of 50 mm, which is formed into a scaly shape or the like and is added with about 5 to 10 parts by weight.

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.)

In Examples 1 to 3 and Comparative Example, the front surface material 2 and the back surface material 3 were both 0.5 mm thick colored steel plates,
The total thickness of the fireproof heat insulating panel 1 is 50 mm.

Therefore, Examples 1 to Comparative Example were constructed as a fireproof heat insulating panel 1 having a basic structure as shown in FIGS. Next, for this fireproof heat insulating panel 1, JIS-
Test by A-1321, 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 system is 1.5 mmφ. The gas pressure in the comparative example was 0.3 kg / m ² for several hours after production at room temperature, and after heating, it became as shown in Table 1 below. Is performed according to JIS-A-1613 (the size of the test piece is 50 mm × 50 mm).
The temperature was 90 ° C. to −30 ° C., and the humidity was the same as the outside air. Is JIS for fireproof structure 1 hour test
-A-1304 was performed.

The results are shown in Table 1 below.

[Table 1]

In the comparative example, there is no escape route for the surplus gas component of the core material 6 at the time of reaction foaming, and the foaming structure at the boundary between the surface material 2 and the core material 6 is roughened, and the condensed water and the acid curing agent form the foaming structure. It was because it had a bad influence on.

Further, the performance in Examples 1 to 3 is a result of the surface material 2 and the anchor material 7 being integrated with the core material 6 with the foamed adhesive layer 5 interposed, and the performance of the above-mentioned anchor material. This is because the surplus gas between the core material 6 and the core material 6 is discharged to the outside of the core material 6 by the functions of the anchor material 7 and the exhaust material 8. Further, as a result of the heat cycle test, the adhesive strengths of Examples 1 to 3 are hardly reduced, while the comparative examples tend to be significantly deteriorated.
Is directly connected to the peeling.

FIG. 5 is an explanatory view showing an embodiment of the fireproof heat insulating panel 1 according to the present invention. That is, it is the fireproof heat insulating panel 1 in which the male type connecting portion 10 and the female type connecting portion 17 are formed on the side surfaces in the longitudinal direction, and the male type connecting portion 10 is the inorganic board 1.
6, a fixture housing groove 11, a guide, an upper protrusion 12 for strengthening the engaging force, and a fitting insertion recess 13 for inserting a main projection 20 described later are integrally fixed by a core member 6 at a side end portion. And a packing material 15 for fire protection and waterproof, and a step portion 14 in which the cover portion 18 of the female connecting portion 17 does not protrude from the decorative surface and is accommodated substantially flush with each other.

The female connecting portion 17 is fitted with the inorganic board 16 functioning as a fireproof reinforcing material and the upper projection 12 to be fitted and inserted.
9, a main convex shape 20 that fits into the fitting concave groove 13, and a packing material 15. With the wall structure formed by connecting in this way, the fireproof heat insulating panel 1 can sufficiently pass the fireproofing 1 hour, and further, the graphite expands and the surface material 2
The heat insulating layer under high heat between the core material 6 and the core material 6 was also sufficiently formed. A packing material 21 is formed on the cover portion 18.

Further, the packing material 15 and the packing material 2
Examples of 1 include polyvinyl chloride type, chloroprene type, chlorosulfonated polyethylene type, ethylene propylene type, asphalt impregnated polyurethane type, EPM, E
It is composed of at least one kind of PDM type, rock wool type, ceramic wool, glass wool, fireproof sponge-like packing, and the like.

As shown in FIG. 5, the inorganic board 16 is a plate member having a length of 1 to 2 m in the middle of the side surface of the male connecting portion 10 and the female connecting portion 17 and having a rectangular shape corresponding to the sectional shape and having one end inclined. Is used in order to strengthen the fire resistance of the joint portion of the fireproof heat insulating panel 1, and is, for example, calcium silicate board, calcium carbonate board, gypsum board, perlite cement board, rock wool board. , A net-like material having a thickness of about 0.5 to 10 mm, a low density as a density,
It is about 10 to 50 kg / m ³ .

Further, another embodiment of the fireproof heat insulating panel 1 can be formed as shown in FIGS. 6 (a) to 6 (e) to FIG. 6 (a) to 6 (e) to 8, the coating film 4, the foamed adhesive layer 5, the anchor material 7, the exhaust material 8 and the fireproof reinforcement material 9 are omitted. Also,
Although not shown, the foamed adhesive layer 5 can be directly formed on the back surface 2a without providing the coating film 4 on the back surface 2a of the surface material 2. Further, as the anchor material 7, instead of the sheet material, short fibers having a length of about 1 to 10 mm may be flocked, and the exhaust material 8 may be laminated thereon.

[0032]

As described above, according to the fireproof heat insulating panel of the present invention, the foamed adhesive layer is provided between the back surface of the surface material and the core material.
Due to the structure in which the anchor material and the exhaust material are laminated in this order, even if the surface material expands and contracts due to solar heat, the foamed adhesive layer functions as a buffer and suppresses the separation of the core material and the surface material. Since the sheet-shaped anchor material integrates the foamed adhesive layer and the core material on the surface, the adhesive strength is enhanced. Due to the synergistic effect of the exhaust material, the anchor material, and the foamed adhesive layer, peeling and brittleness at the boundary portion of the core material, particularly phenol foam, are greatly improved. A fireproof heat insulating panel in which a fireproof reinforcing material is added to a core material can pass a fireproof structure test (JIS-A-1304). Since the coating film formed on the back surface of the surface material is protected by the foaming adhesive layer, it is not destroyed by the acid curing agent of the resol-type phenol foam resin, and the surface material and the core material can be integrated. Since the anchor material and the exhaust material diffuse unnecessary gas generated at the boundary portion of the back surface of the surface material to the outside by the anchor material, separation between the surface material and the core material can be prevented. In the long run, the badness caused by the expansion of excess gas by the sun can be avoided. Exhaust material has surplus gas pressure 1/10
It can be reduced to the following. Compressive strength and sound insulation can be greatly enhanced. There are features and effects such as.

[Brief description of the drawings]

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

FIG. 2 is an explanatory view showing an embodiment of a fireproof heat insulating panel according to the present invention.

FIG. 3 is an enlarged explanatory view showing an example of an anchor material which is a main part of the fireproof heat insulating panel according to the present invention.

FIG. 4 is an enlarged explanatory view showing an example of an anchor material which is a main part of the fireproof heat insulating panel according to the present invention.

FIG. 5 is an explanatory view showing an embodiment of the fireproof heat insulating panel according to the present invention.

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

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

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

[Explanation of symbols]

 A string-like α layer β face material γ concave portion θ raised 1 fireproof heat insulating panel 2 surface material 2a back surface 3 back surface material 3a back surface 4 coating film 5 foam adhesive layer 6 core material 7 anchor material 7a anchor material 7b anchor material 7c anchor material 7d Anchor material 8 Exhaust material 9 Fireproof strengthening material 10 Male type connection part 11 Fixture storage groove 12 Upper protrusion 13 Fitting concave groove 14 Step part 15 Packing material 16 Inorganic board 17 Female connecting part 18 Cover part 19 Fitting groove 20 Main ridge 21 Packing material

Claims (2)

[Claims] 1. A fireproof heat-insulating panel in which a plastic foam which is carbonized under high heat is integrally interposed between a surface material and a back surface material, and a sheet-shaped anchor material or a string is formed on the back surface of the surface material via a foaming adhesive layer. A fire-resistant heat-insulating panel, characterized in that it is laminated in this order in the form of exhaust materials and is self-adhesive when the plastic foam is foamed, and is fixed integrally. 2. A foaming adhesive layer, at least one of plastic foams, and at least one of fireproof reinforcing materials comprising expandable graphite, calcium carbonate, phenol resin particles, aluminum hydroxide particles or powder, ammonium polyphosphate, inorganic fibers and the like. The refractory heat insulating panel according to claim 1, wherein at least one kind is mixed.