JPH09228508A - Fire-resistant heat insulating panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide excellent fire resistance by providing a core material formed of a synthetic resin foamed body carbonized under a high heat between metallic surface material and rear surface material, and integrally interposing a fire resisting sheet for dividing the core material in the thickness direction. SOLUTION: A core material 4 formed of a synthetic resin foamed body carbonized under a high heat is integrally provided between a surface material 1 and a reverse surface material 3 which are formed of metallic thin plates of iron, aluminum or the like, whereby a fire insulating panel A is formed. A fire resisting sheet 5 formed of a base, a fire resisting material, and a covering material is integrally interposed so as to divide the core material 4 to at least two pieces. Further, a coating film-like or film-like fire resisting coating layer 2 is integrally fixed to at least one surface 1a, 3a of the surface material 1 and the reverse surface material 3. Thus, a change such as swelling, warping, or peeling of surface material is never caused after construction, and a panel excellent in fire resistance can be formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior wall material for a building or a building,
The present invention relates to a fireproof heat-insulating panel that can be used as a partitioning material, a fire door, and the like, and is free from changes such as swelling, warping, and peeling of surface materials after construction, and is excellent in fire resistance and mechanical strength.

[0002]

2. Description of the Related Art Conventional sandwich panels of this type include: (a) a non-combustible surface material, a panel in which only a synthetic resin foam layer is interposed between back surface materials, and (b) an inorganic substance in the synthetic resin foam layer. It is known that a panel in which (3) is mixed, a panel in which only the inorganic foam is used instead of the synthetic resin foam layer (c), and the like.

[0003]

However, these panels have various inconveniences. For example, the panel (a) is light in weight but poor in heat resistance and fire resistance, and the panel (b) is synthetic. Inorganic substance intervening in the resin foam layer,
There is a problem of lowering the adhesive strength between the surface material, the back surface material and the synthetic resin foam layer, and further, the surface material and the synthetic resin foam layer are peeled off by solar radiation, and the appearance is badly damaged, and the amount of the inorganic substance becomes large, and In the case of (c), it is excellent in fire resistance, but inferior in heat insulation under high heat and mechanical strength (bending, cutting, In addition to lacking impact, etc., the weight of the panel itself increased, making it difficult to handle and lacking workability. Of course, it could not pass JIS-A-1304.

[0004]

In order to eliminate such drawbacks, the present invention uses, as a core material, a core material made of a synthetic resin which is carbonized under high heat as a core material made of a non-combustible material and a metal material. It is sandwiched and formed integrally, and a refractory sheet that forms a carbonized layer under high heat as if the core material is divided is integrally interposed, and at least one of the front surface material and the back surface of the back material is thermally insulated under high heat. The present invention proposes a fireproof heat insulating panel which is integrally provided with a fireproof coating layer and can pass fireproofing for 30 minutes to 2 hours, is lightweight, and has excellent heat insulating properties and mechanical strength.

[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 to 3
[FIG. 3] is an explanatory view showing an example of a typical fireproof heat insulating panel according to the present invention, in which A is a fireproof heat insulating panel according to the present invention in which a core material 4 is integrally interposed between a surface material 1 and a back surface material 3. ,
In addition, a structure in which a fireproof coating layer 2 in the form of a coating film or a film is integrally fixed to at least one of the back surface 1a and 3a of the surface material 1 and the back surface material 3 so as to divide the core material 4 It is a fireproof insulation panel A.

Explaining further, as the surface material 1 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. Calcium carbonate paper, asbestos paper, kraft paper, asphalt felt, metal foil (Al, Fe, Pb, Cu), synthetic resin sheet, rubber sheet, cloth sheet, etc. Gypsum paper, aluminum hydroxide paper, glass fiber non-woven cloth, etc. laminated one or more kinds, or Waterproofing, those composed of one sheet or the like which is flame-retardant treatment.

The refractory coating layer 2 has the following two functions on at least one back surface of the surface material 1 and the back surface material 3. That is, in a normal state, it functions as an adhesive layer, cushion layer (buffering property), chemical resistance (acid resistance, alkali resistance), and a heat insulating thin layer.
₂ , it generates water vapor, CH _4, etc., then foams about 3 to 50 times, and becomes a carbonized layer to exhibit heat insulating properties. When the fireproof coating layer 2 is in the form of a film or the like, the front surface material 1 and the back surface material 3 are integrated with an adhesive agent.

Further, specific examples of the refractory coating layer 2 include synthetic resins (phenol resin, polyurethane resin, polyester resin, epoxy resin, chloroprene, amino alcohol, etc.) as binders and expansive graphite and carbon which foam and carbonize under high heat. Black (graphite), Sb trioxide serving as a refractory material, ammonium phosphate, ammonium hydroxide as an auxiliary agent, carbon fiber rock wool, etc. were added and integrally bonded to about 0.5 to 3 mm. The synthetic resin as a binder is in the form of hot melt, jelly, liquid or the like.

The core material 4 forms a carbon skeleton at least under high heat, and is a synthetic resin foam layer alone having heat insulation, heat resistance, dimensional stability, and self-adhesiveness even in a normal state, or mixed with a refractory material 5. The composition mainly functions as a reinforcing material, a fireproof material, a heat insulating material, an adhesive, a cushioning material, a dimension stabilizing material, and a bulking material.

Specific examples of the core material 4 include polyisocyanurate foam, resol-type phenol foam, phenol-modified polyurethane foam, or ammonium polyphosphate, a catalyst, a foaming agent, an acid curing agent, etc. added to the synthetic resin foam layer. It was done.

The refractory sheet 5 is integrally interposed so as to divide the core material 4 into at least two parts, for example, about half of the thickness T, and the heat resistance, fire resistance, mechanical strength, sound insulation of the core material 4,
It enhances chemical resistance, air permeability, etc., and as shown in FIG. 4, the thickness thereof is a sheet-like material having a thickness t of about 0.3 to 10 mm, or a net-like or non-woven fabric-like material.

The structure of the fireproof sheet 5 is, for example, as shown in FIG.
As shown in, consists of a base material 6, a fireproof material 7, a covering material 8 and the like,
The base material 6 is, for example, a non-woven fabric, a net-shaped material, a film-shaped material, a sheet-shaped material, or the like, and the material is a synthetic resin (phenol resin, polyester resin, polystyrene resin,
Polyurethane resin, etc.), paper (calcium carbonate paper, aluminum hydroxide paper, rockwool paper, etc.), pulp, rockwool, graphite, carbon fiber, etc., formed in a single layer, two layers, or three layers It is a structure.

As the fireproof material 7, graphite (foamability,
Non-foaming), carbon compounds such as carbon black, aluminum hydroxide, glass beads, rice husks, resol-type phenol resin particles, expandable graphite resin-coated aluminum hydroxide having a size of about 10 to 100 μ, and the like. It is composed.

The coating material 8 is useful for promoting the wetting of the surface of the base material 6 with the core material 4 and for protecting the fireproof material 7 from being adversely affected when the core material 4 is formed. Apply one or more synthetic resins (3-10μ), or 15
It is, for example, a film laminated with a thickness of about 50 μm.

In particular, the refractory sheet 5 conducts heat horizontally under high heat, foams and expands to form a carbonized layer of about 3 to 30 mm, and generates incombustible gas, water vapor and the like to initially generate heat. It serves to cool the periphery and delay the temperature rise of the core material 4.

The refractory material 9 shown in FIGS. 2, 3 and 5 is dispersed in the core material 4 or distributed in high density to enhance the fire resistance and heat resistance of the core material 4 itself, for example carbon. Black, graphite, carbon fiber, rock wool, aluminum hydroxide, pearlite particles, glass beads, chaff, resole type phenol resin powder, expansive graphite, resin coated aluminum hydroxide of about 10 to 100 microns It is one or more kinds, foams and expands under high heat to form an inorganic carbonized layer, and aluminum hydroxide has a function of releasing water and cooling the temperature.

Reference numeral 10 denotes an exhaust material, which is integrally laminated with an adhesive 11 as shown in FIG. 3 or integrally laminated with an adhesive 11 and flock 12 and is mainly adhered to the core material 4. It has a function (communication void) of exhausting the reinforcing auxiliary material, cushioning material, cushion material and excess gas and liquid inside the core material 4 to the outside of the core material 4, and specifically, glass fiber, cotton, expansive graphite. , A non-expandable graphite, a synthetic resin fiber, carbon black, and the like, which are a string-like material, a sheet-like material, or a net-like material. In addition, the string-like material is 1-10 mmφ
The sheet-like material (including non-woven cloth) has a thickness of 0.5 to 10 mm, and the net-like material has an arbitrary size. The exhaust capacity is cotton (5 mmφ) and the gas pressure can be reduced to about 1/10 or more.

The adhesive 11 is a well-known synthetic resin layer and is one of hot melt type, jelly type, film type, and coating type, and is useful for adhering the fireproof coating layer 2, the exhaust material 10, and the flocked hair 12. , And the thickness is about 20 to 200 μm. Flocked 12
Is useful for strengthening the integration of the core material 4 and the bristles and strengthening the integration with the surface material 1, and makes it easy to discharge the surplus gas between the exhaust material 10 and the core material 4 to the outside and to bond it to the core material 4. Agent 11
Which strengthens the integration of the surface material 1 and the core material 4 by strengthening the integration of the surface material 1 and prevents the peeling of the surface material 1 and the core material 4 and helps prevent the deformation (swelling) of the surface material 1 and the like. Is.

The flocked hair 12 has a length of about 1 to 30 mm,
The size is about 10 to 100 denier, the density is different depending on the purpose, for example, 40 to 100 g / m ² , and the material is one or more of various fibers (metal, plant, animal) such as plastic, fiber, graphite, etc. vertical, inclined, etc. Then, the hair is planted.

(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 stabilizer Agent (Toray Silicon 193H) 2 parts by weight (e) Catalyst (trade name: DABCO) 5 parts by weight (f) Fireproof coating layer 2 1 mm thick (a) (g) Fireproof sheet 5 0.5 mm thick (b) (A) The fireproof coating layer 2 is integrally bonded to the back surface of the surface material 1, and graphite (0.1 mm in powder form) is added to 100 parts by weight of the polyester resin.
1 part by weight, 5 parts by weight of ammonium polyphosphate and 10 parts by weight of antimony trioxide are mixed. Also,
(B) The refractory sheet 5 is made by binding expandable graphite to a carbon fiber nonwoven fabric with a resol type phenol resin.

Example 2 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) Same as Example 1 (g) Same as Example 1 (h) Refractory material 9 (α) (10 to 30 μm) Coating aluminum hydroxide with phenol resin) 80 parts by weight Graphite 10 parts by weight

Example 3 Resol-type phenol foam (a) Resol-type phenol resin 100 parts by weight (nonvolatile content 80%, viscosity 1500 CPS / 20 ° C.) (b) Curing agent 15 parts by weight (65% paratoluene sulfone) Acid aqueous solution) (c) Foaming agent 15 parts by weight (Alternative CFC 141b) (d) Additive 10 parts by weight (silicone, ammonium polyphosphate) (e) Fireproof coating layer 0.5 mm thick (c) (f) Fireproof sheet 1 mm Thickness (d) (g) Refractory material 90 90 parts by weight (a) Aluminum hydroxide approximately 20 to 30 μ coated with resol-type phenol resin (b) Graphite (powdered to a particle size of about 0.5 mm) 5 parts by weight Part (c) Gas adsorbent (activated carbon) 3 parts by weight (h) Exhaust material 10 5 parts by weight (8 mmφ of mixture of glass fiber and cotton 1 Arranged in parallel with the longitudinal direction of panel A at a pitch of 0 mm) (i) Adhesive 11 2 parts by weight (phenol resin adhesive is applied to a thickness of 0.5 mm) (j) Flocking 3 parts by weight (glass fiber (thickness 0.3 mm, length 6 mm)

In addition, (c) is the one in which the fire-resistant coating layer 2 is adhered to the back surface 1a of the surface material 1, and the resol type phenol resin has aluminum hydroxide particles (10 to 30 μ coated with the phenol resin) 30 weight Parts, 5 parts by weight of graphite particles, 3 parts by weight of glass fiber particles, and 3 parts by weight of ammonium polyphosphate.

In (d), aluminum hydroxide particles (about 20 μm), resol type phenol resin particles (5 to 30 μm), graphite particles, and polyisocyanurate are bound between nonwoven fabrics of carbon fibers that conduct heat in the horizontal direction. , These are integrally formed.

(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% paratoluenesulfonic acid aqueous solution) (C) Blowing agent 13 parts by weight (CFC alternative 141b) (d) Additive 5 parts by weight (silicone, ammonium polyphosphate, etc.)

Further, in Examples 1 to 3, the front surface material 1 and the back surface material 3 were color steel plates having a thickness of 0.5 mm, and in the third embodiment, the surface material 1 and the back surface material 3 were stucco-like with a depth of 0.5 mm. It is embossed. The total density of the core material 4 was set as shown in Table 1 below, and the total thickness of the fireproof heat insulating panel A was set to 50 mm. As the front surface material 1 and the back surface material 3 of the comparative example, color steel plates having a thickness of 0.5 mm were used.

Therefore, Examples 1 to 3 were constructed as a fireproof heat insulating panel 1 having a basic structure as shown in FIG. Next, for this fireproof heat insulating panel 1, JIS-A-1321
Exam by. Is the 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. AB type 50 pressure sensor manufactured by Kronell
PSI, conduit system 1.5 mmφ. In addition, the gas pressure in the comparative example is 0.3 during several hours after production at room temperature.
It became kg / m ² and later became as shown in Table 1 by heating. Is performed according to JIS-A-1613 (the size of the test piece is 50 mm × 50 mm). 90 ℃ ~-
The humidity was the same as that of the outside air at 30 ° C., and the operation was performed for 12 days each for 60 days. Is JIS-A-1304 and the backside temperature is 260.
It is to clear the standard of 10 ° C or less and afterflame of 10 minutes or less. The results are shown in Table 1 below.

[0028]

[Table 1]

In the comparative example, there is no reaction of the core material 4, there is no escape route for excess gas at the time of foaming, the foamed structure at the boundary between the surface material 1 and the core material 4 is rough, and the condensed water and the acid curing agent are foamed structures. And the coating film of the surface material 1 was destroyed for a long time (about 90 days). Moreover, the gas in the separated portion of the surface material 1 and the core material 4 expands due to the temperature rise due to the solar radiation of the surface material 1,
Surface material 1 due to large pressure while further expanding peeling
The phenomenon that the swelling was observed.

Further, in the embodiment, since the core material 4 is divided into all the structures, the amount of resin per layer is small, and the method for manufacturing a thin product is achieved. Further, as a result of the heat cycle test, the adhesive strengths of Examples 1 and 2 are hardly decreased, while the comparative examples tend to be significantly deteriorated. It is directly connected to peeling. In terms of fire resistance, the fire-resistant coating layer 2 forms the primary fire-resistant heat-insulating layer (non-combustible heat-insulating layer having a thickness of 5 mm), the core material 4 forms the secondary heat-insulating layer and the fire-resistant layer, and the fire-resistant sheet 5 forms the third layer. The refractory heat insulating layer of (1) was made reliable, and a carbonized heat insulating layer (for example, about 10 mm thick in Example 3) was formed.

The above description is only one embodiment of the fireproof heat insulating panel according to the present invention, and it can be constructed as shown in FIGS. That is, in FIG.
After embossing with a depth of 5 mm, the flocked hair 12 is planted only on the bottom surface as shown in FIG. 6, the exhaust material 10 is placed on it, and the raw material of the core material 4 is laminated on it and reacted. The foamed and hardened layer is provided on the back surface 3a of the back surface material 3, and the reinforcing material 13 is integrally fixed to the fire resistant sheet 5 and embedded in the core material 4.

In particular, the reinforcing material 13 is a net-like material which can be embedded in the core material 4 having an exhausting function, a fireproof layer forming function, a reinforcing function, and an anchoring function, and is formed in a wavy shape as a whole to be integrated with the core material 4. It is a product that has been made even stronger, and the dimensions are W
= About 20 mm. The material of the reinforcing material 13 is metal,
Synthetic resin, animal and plant fiber, carbon fiber, paper (calcium carbonate, kraft paper, aluminum kraft paper), rock wool,
Thread-like, string-like, using one or more kinds of fibers such as glass wool,
A non-woven fabric is formed into a flat plate shape as described above.

FIG. 7 shows a fireproof heat insulating panel A in which the fireproof sheets 5 are arranged in two layers and the core material 4 is divided into, for example, three parts. In this case, there is an advantage that the core materials 4a, 4b, and 4c can be used with different densities and different materials to form the core material 4 having a desired function.

Further, the fireproof heat insulating panel A provided with the male type connecting portion B and the female type connecting portion C is formed as shown in FIGS. 8 (a) to 8 (c) and 9 (a) to 9 (c). Then, non-combustible lightweight material D such as gypsum board, calcium carbonate board, calcium silicate board, fireproof packing material E, packing material F are provided.
It is also possible to have a structure in which the fire resistance and waterproofness of the connecting portion are enhanced.

[0035]

As described above, according to the fireproof heat insulating panel according to the present invention, since the fireproof coating layer is integrally fixed and formed on at least one rear surface of the surface material and the back surface material, the core material is formed. The adhesive force between the surface material and the front surface material and the back surface material can be remarkably enhanced, the peeling phenomenon of the core material does not occur, and the coating films of the front surface material and the back surface material do not deteriorate due to the components of the core material. The fireproof coating layer normally functions as an adhesion promoting material while being a separation layer from the cushion material, the adhesion strengthening agent, and the core material, and also serves as a fireproof heat insulating layer under high heat. The refractory sheet divides the core material and also reflects heat between the surface material and the back surface material to suppress the propagation of heat, and the refractory sheet conducts heat horizontally and vertically. Can be significantly reduced,
Can pass the fireproof test for 30 minutes to 2 hours. Refractory mixed in the core material cools the surroundings by releasing crystal water under high heat,
A fireproof heat insulating layer can be formed by forming a carbonized layer of graphite. Since the exhaust material is interposed between the surface material and the core material, the surface material is heated by solar radiation after construction, the excess gas of the core material expands, the surface material and the core material are separated, and the irregularities and aesthetics of the surface material are accompanied by aesthetics. Can be prevented by degassing. The combined use of the heat insulating thin layer and the exhaust material exerts a cushioning function and an anchor effect between the surface material and the core material, so that the adhesive strength is further improved and deformation of the surface material can be suppressed. It is lightweight and has excellent heat insulation.
With polyisocyanurate foam, it has become possible to obtain fireproof panels that pass the fireproof structural test. Sound insulation was also enhanced by the laminated structure. There are features and effects such as.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a typical example of a fire-resistant and heat-insulating panel according to the present invention.

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

FIG. 3 is an explanatory view showing another example of the fireproof heat insulating panel according to the present invention.

FIG. 4 is an explanatory view showing an example of a fireproof sheet of a fireproof heat insulating panel according to the present invention.

FIG. 5 is an explanatory diagram showing another example of the fire-resistant and heat-insulating panel according to the present invention.

FIG. 6 is an enlarged view showing the vicinity of the surface material shown in FIG.

FIG. 7 is an explanatory view showing another example of the fire-resistant and heat-insulating panel according to the present invention.

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

FIG. 9 is an explanatory view showing another example of the fireproof heat insulating panel according to the present invention.

[Explanation of symbols]

 A Fireproof heat insulation panel B Male type connecting part C Female type connecting part D Noncombustible lightweight material E Fireproof packing material F Packing material 1 Surface material 1a Back surface 2 Fireproof coating layer 3 Back surface material 3a Back surface 4 Core material 4a Core material 4b Core material 4c Core Material 5 Fireproof sheet 6 Base material 7 Fireproof material 8 Coating material 9 Fireproof material 10 Exhaust material 11 Adhesive 12 Flocking 13 Reinforcement material

Claims (3)

[Claims] 1. A fireproof heat-insulating panel in which a core material made of synthetic resin foam that carbonizes under high heat is integrally provided between a metal surface material and a back surface material, and the core material is divided in the thickness direction. And a refractory coating layer integrally disposed on at least one back surface of the front surface material and the back surface material. 2. The fireproof heat insulating panel according to claim 1, wherein one or more kinds of graphite, carbon black, aluminum hydroxide, short fibers, ammonium polyphosphate, etc. are added to the core material. 3. The fire resistant heat insulation panel according to claim 1, wherein a reinforcing layer and an exhaust material are integrally laminated in this order between the back surface of the surface material and the core material.