JPH0681858B2 - Fireproof insulation panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is applied to outer walls used for buildings, partitions and other partitions, various building materials such as shutters, outdoor facilities such as toilets and pool houses, and prefabricated refrigerators. The present invention relates to a fire-resistant heat-insulating panel that is excellent in non-combustibility and heat insulation.

[Conventional technology]

Conventionally, for this type of fireproof insulation panel, for example,
Granular inorganic foam, an silicate alcal solution used as a binder, and a curing agent for the binder mainly composed of metal silicon powder are mixed, and the resulting reaction mixture is filled in a molding mold, It is foamed in a mold and cured to produce an inorganic heat insulating plate, the surface of this inorganic heat insulating plate is polished to form a panel body, and then a surface plate is attached to both front and back sides of this panel body with an adhesive. Inorganic foam sandwich panel, rock wool, glass wool,
Inorganic fibers such as ceramic wool are bound with an organic resin such as phenol as a binder and molded into a board shape, and this inorganic fiber layer molded body is used as a panel body, and then both front and back sides of this panel body are bonded with an adhesive. There is known an inorganic fiber sandwich panel manufactured by pasting a face plate.

However, although the former inorganic foam sandwich panel is excellent in terms of fire resistance, heat resistance, rigidity, etc., its performance is slightly insufficient in terms of heat insulation and light weight, and the latter inorganic fiber. Although sandwich panels are excellent in terms of fire resistance, heat resistance, heat insulation, etc., the rigidity of the inorganic fiber molded body that becomes the panel body, especially the rigidity when a load is applied perpendicularly to the panel surface (below , Surface rigidity) is insufficient, and a thin metal plate such as a decorative steel plate cannot be used as the surface plate, and a large-thickness metal plate having excellent surface rigidity by itself or excellent surface rigidity is provided. Since it is necessary to use a composite plate with other materials that it has, it has not been possible to take advantage of the features that the inorganic fiber molded body is lightweight and has excellent fire resistance, incombustibility, heat insulation and the like.

However, due to the diversification in the construction industry in recent years, it has become necessary to develop a fire-resistant heat-insulating panel that is not only excellent in fire resistance, non-combustibility, and heat insulation but also is lightweight and has high surface rigidity. Came.

[Problems to be Solved by the Invention]

Therefore, the present inventor has reached the present invention as a result of earnest research on the development of a refractory heat insulating panel that solves the problems in the conventional fire resistant heat insulating panels.

Therefore, an object of the present invention is to provide a fireproof heat-insulating panel which is lightweight, has high surface rigidity, and has excellent fire resistance, incombustibility, heat insulating properties and the like.

[Means for Solving the Problems]

That is, the present invention is a fireproof heat insulating panel formed by interposing a fireproof heat insulating material between a metal front plate and a back plate, the front plate is formed in a box shape, and the fire resistance As an insulating material, an inorganic foam layer formed by directly reaction-curing a reaction mixture containing a pearlite particle group, an aqueous solution of alkali silicate and a curing agent via an adhesive is provided on the inner side of the box-shaped surface plate, and the back side is provided. It is a fireproof heat insulating panel provided with an inorganic fiber layer and / or an organic foam layer on the face plate side.

In the present invention, as the metal front plate or back plate, a conventionally known metal plate used for this type of application, for example, a decorative steel plate, a fluororesin steel plate, a color steel plate, a color aluminum plate or the like can be used. . And about the said surface board side, this is shape | molded beforehand in a box shape, the inorganic foam layer and the inorganic fiber layer and / or the organic foam layer are formed in it, and the panel periphery produced by this. It is easy to clean up the parts.

The inorganic foam layer formed on the surface plate side as the refractory heat insulating material is composed of one kind or a mixture of two or more kinds selected from the group of pearlite particles such as obsidian, vermiculite, pearlite or pine rock. Regarding the particle size and the density, the particle size is 0.1 to 30 mm, preferably 0.5 to 15 mm, and the density is 0.1 to 0.3 g / cm ³ , preferably 0.1 to 0.2 g / cm ³ . Density is especially important for manufacturing lightweight and excellent heat insulation
Use in the range of 0.1 to 0.16 g / cm ³ . Then, with respect to 100 parts by weight of such an inorganic foam, as a binder, for example, an aqueous solution of sodium silicate or an aqueous solution of potassium silicate is blended at a ratio of 30 to 120 parts by weight, and further 100 parts by weight of an aqueous solution of alkali silicate as a curing agent for the binder. For the parts, for example, metallic silicon powder having the properties of metallic silicon, such as metallic silicon, ferrosilicon, which is an alloy of iron and silicon, a mixture of metallic silicon and silicon dioxide, or 2
A mixture of one or more kinds is mixed in a range of 10 to 50 parts by weight, and the obtained reaction mixture is molded into a predetermined shape by a predetermined method.

This inorganic foam layer is formed by forming a suitable adhesive on the inside of the surface plate which is previously formed in a box shape, preferably, for example, polyurethane-based, urea-based, phenol-based, resorcinol-based, epoxy-based, polyester-based, polyimide-based, etc. It is carried out by a method in which the thermosetting adhesive of (3) is applied, and the inorganic foam layer is formed and then attached to the surface plate.

Further, the inorganic fiber layer formed on the back plate side as the refractory heat insulating material may be any conventionally known one, for example, a rock wool plate obtained by molding rock wool, a ceramic fiber is molded. The ceramic fiber board obtained by the above, such as glass fiber can be mentioned,
Also, the organic foam layer used in place of or together with the inorganic fiber layer may be any conventionally known one, for example, a phenol foam resin plate or urethane foam having relatively high heat resistance. A thing like a resin plate can be mentioned.

Furthermore, in the present invention, a partition member is provided between the inorganic foam layer on the front plate side and the inorganic fiber layer and / or the organic foam layer on the rear plate side of the refractory heat insulating material to partition them.
As a result, a reaction mixture consisting of a pearlite particle group, an aqueous solution of alkali silicate and a curing agent is filled inside the surface plate preliminarily formed in a box shape with an adhesive, and the reaction mixture is subjected to reaction curing to form an inorganic foam layer. Not only can it be used as a mold for molding, but it can also be used as a receiving pin for a fixing pin that fixes the inorganic fiber layer when the inorganic fiber layer is provided on the back plate side.

In the fireproof heat insulating panel of the present invention, the thickness relationship between the inorganic foam layer and the inorganic fiber layer and / or the organic foam layer may be variously changed depending on the required performance. Usually 10 ~ 60mm for inorganic foam layer
And the inorganic fiber layer and / or the organic foam layer.
It is good to set it within the range of 10 to 100 mm.

Further, in the present invention, when the surface rigidity on the back plate side is more strongly required than the degree of weight reduction, a thin inorganic foam layer is formed inside the back plate, for example, an inorganic foam having a thickness of about 10 to 20 mm. By forming a foam layer, it is possible to improve the surface rigidity on the back plate side.

[Work]

Since the fire-resistant heat-insulating panel of the present invention is formed by closely adhering the inorganic foam layer to the surface plate and has the inorganic fiber layer and / or the organic foam layer on the back plate side, the inorganic foam layer allows the inorganic foam layer on the surface plate side to be formed. The surface rigidity is improved, and the weight of the entire panel can be achieved by the inorganic fiber layer and / or the organic foam layer on the back plate side, which is lightweight and has high surface rigidity, and also has excellent fire resistance and noncombustibility. A fire-resistant heat-insulating panel having properties such as heat-insulating property.

〔Example〕

 Hereinafter, the present invention will be specifically described based on Examples.

Embodiment 1 FIG. 1 shows a fire resistant heat insulating panel P _{1 according} to an embodiment of the present invention.

This fire-resistant heat-insulating panel P ₁ is basically a surface plate 1 formed by press-molding a metal plate such as a decorative steel plate into a box shape, and a depth of about 1/3 of the inside of the surface plate 1. An inorganic foam layer 2 formed up to the present, a back plate 3 made of a metal plate such as a decorative steel plate attached to the back plate of the front plate 1,
It is composed of an inorganic foam layer 2 and an inorganic fiber layer composed of a rock wool plate 4 located between the back plate 3 and the inorganic foam layer 2.

In this embodiment, a partition member composed of a lath net 5 is provided between the inorganic foam layer 2 and the rock wool plate 4, and the lath net 5 extends along the inner surface of the peripheral wall 1a of the surface plate 1. The steel frame 6 having a Z-shaped steel cross-section provided is pressed onto the upper surface of the inorganic foam layer 2, and the rock wool plate 4 penetrates the rock wool plate 4 and lath net 5 from the upper surface to form an inorganic foam. The rock wool board 4 is fixed by pressing pins 7 that reach the body layer 2 so that the rock wool board 4 does not shift or sink downward when the fireproof heat insulating panel P _{1 is made} to be vertical. The peripheral edges of the frame 6 and the back plate 3 are crimped so as to wrap them around the peripheral edge of the front plate 1 and the steel frame 6 inside.

The fireproof heat insulating panel P ₁ of this example is manufactured by the following procedure.

First, a metal plate such as a decorative steel plate is formed into a box shape by press forming or the like to form the surface plate 1, and then a thermosetting adhesive such as urethane resin or epoxy resin is applied to the inner surface side of the surface plate 1 and pearlite is applied thereto. A reaction mixture consisting of particles, an aqueous solution of alkali silicate and a curing agent is filled to a height of about 1/3 of one peripheral wall of the surface plate, and the lath net 5 is placed on the reaction mixture. Furthermore, the upper horizontal wall
6a closely adheres to the upper surface of the flange 1b of the surface plate 1, the vertical wall 6b closely adheres to the inner surface of the peripheral wall of the surface plate 1, and the lower horizontal wall 6c forms the inorganic foam layer 2 described above. The steel frame 6 is fixed along the peripheral wall of the front plate 1 by the holding plate so as to be located on the upper side, and in this state, it is heated at a temperature of 70 to 120 ° C. for 10 to 30 minutes to be reacted to cure the reaction mixture. The inorganic foam layer 2 is formed.

Next, the upper surface of the formed inorganic foam layer 2, the steel frame 6
The vertical wall 6b and the lower horizontal wall 6c are coated with a thermosetting adhesive such as urethane resin or epoxy resin on the inner surface sides thereof, respectively, and the rock wool plate 4 cut to a predetermined size to form the inorganic fiber layer is filled. Then, the pressing pin 7 is driven in from above the rock wool board 4 to fix the rock wool board 4,
Further, the upper surface of the rock wool board 4 and the steel frame 6
A thermosetting adhesive such as urethane resin or epoxy resin is applied to the upper surface of the upper horizontal wall 6a of each of the above, and the back plate 3 is placed thereon, and the adhesive is hardened and fixed under heat and pressure. The peripheral portion of the face plate 3 is caulked and fixed so as to wrap the surface plate 1 and the steel frame 6, and waterproof treatment is performed.

The fire-resistant heat-insulating panel P ₁ thus formed has a light weight and high surface rigidity, and also has excellent fire resistance, non-combustibility, and
Has performance such as heat insulation. The structure of the fire-resistant heat-insulating panel obtained in Example 1, the panel weight at that time, the heat-insulating performance (heat transmission coefficient), and the fire-resisting performance (JIS A 1304
The state after heating for 1 hour under the heating conditions according to the method, and the back surface temperature acceptance criterion: 260 ° C.) were examined.

That is, the thickness of the iron plate of the front plate 1 is 0.5 mm, the thickness of the obsidian foam plate of the inorganic foam layer 2 is 20 mm, the thickness of the rock wool plate 4 of the inorganic fiber layer is 30 mm, and the back plate 3 is the iron plate thickness is 0.5 mm. , The panel weight is 16.5 kg / m ² , the thermal conductivity of the heat insulation performance is 0.83 Kcal / m ² h. ℃, and the fire resistance performance of the back surface temperature is 151 ℃, and there is no deformation or dropout. So, the judgment was pass. In addition, the thickness of the obsidian foam plate of the inorganic foam layer 2
30 mm, and the thickness of rock wool board 4 of inorganic fiber layer is 60
Panel weight is 2
At 1.6 kg / m ² , the heat transmission coefficient of heat insulation performance is 0.48 Kcal / m ² h. ℃
Further, the fire resistance was that the back surface temperature was 110 ° C., there was no deformation / falling off, and the judgment was pass.

Embodiment 2 Next, FIG. 2 shows a fire resistant heat insulating panel P _{2 according} to another embodiment of the present invention.

This refractory heat insulating panel P ₂ also basically has the same configuration as that of the above-mentioned Example 1, but instead of the inorganic fiber layer made of the rock wool plate 4, the inorganic foam layer 2 and the back plate 3 are used. An organic foam layer composed of the phenol foam layer 8 is formed between the and.

In this embodiment, the phenol foam layer 8 comprises 100 parts by weight of a phenol resin as a main component, 40 parts by weight of a toluenesulfonic acid aqueous solution (64%) as a curing agent,
Methylenediphenyl diisocyanate as a reaction modifier
Mix 15 parts by weight and 15 parts by weight of Freon as a foaming agent,
It is obtained by thoroughly mixing to obtain a mixture, injecting the mixture onto the inorganic foam layer 2 that has already been foamed and reaction-cured, and foam-cured. The density of this phenol foam is 40 to 50 g /, and after flattening the upper surface, the back plate 3 is pressure bonded under heat and pressure using a thermosetting adhesive such as urethane or epoxy, and the same as in Example 1. Manufacture refractory insulation panels.

The fire-resistant heat-insulating panel P ₂ of this example is also lightweight and has high surface rigidity, and also has excellent fire resistance, incombustibility, heat insulation properties, and the like. The structure of the fire-resistant heat-insulating panel obtained in this Example 2, the panel weight at that time, the heat-insulating performance (heat transmission coefficient), and the fire-resistant performance were examined.

That is, the thickness of the iron plate of the front plate 1 is 0.5 mm, the thickness of the obsidian foam plate of the inorganic foam layer 2 is 30 mm, the thickness of the phenol foam layer 8 of the organic foam layer is 30 mm, and the thickness of the back plate 3 is 0. .
When it is set to 5 mm, the panel weight is 19.0 kg / m ² , the heat transmission coefficient of the heat insulation performance is 0.63 Kcal / m ² h. ° C, and the fire resistance performance is 128 ° C at the back surface temperature, and there is no deformation or dropout. So, the judgment was pass.

〔The invention's effect〕

The refractory heat-insulating panel of the present invention has an inorganic foam layer formed by reaction-curing a reaction mixture containing a pearlite particle group, an alkali silicate aqueous solution and a curing agent, and the curing reaction is formed in a box shape. Since it is directly performed on the inside of the surface plate via an adhesive, the inorganic foam layer and the surface plate are closely adhered to each other without any gap, and even if the surface plate is thin, High surface rigidity can be secured on the face plate side.

Therefore, the fire-resistant heat-insulating panel of the present invention is lightweight and has high surface rigidity, and also has performances such as fire resistance, incombustibility, and heat insulation property. It is useful for applications such as outer walls and fireproof partitions.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view showing a fireproof heat insulating panel according to an embodiment of the present invention, and FIG. 2 is a sectional explanatory view similar to FIG. 1 according to another embodiment. Explanation of symbols (P ₁ ) (P ₂ ) ... fireproof heat insulating panel, (1) ... front plate, (2) ... inorganic foam layer, (3) ... back plate,
(4) ... Rock wool board (inorganic fiber layer), (5) ...
… Lath net (partitioning member), (6) …… Steel frame, (7)
...... Press pin, (8) …… Phenol foam layer (organic foam layer).

Claims (2)

[Claims] 1. A fire-resistant heat-insulating panel formed by interposing a fire-resistant heat-insulating material between a front plate and a back plate made of metal, wherein the front plate is formed in a box shape, and the fire-resistant heat insulating material is formed. As the material, an inorganic foam layer formed by directly reaction-curing a reaction mixture containing a pearlite particle group, an aqueous solution of alkali silicate and a curing agent through an adhesive is provided on the inside of the box-shaped front panel, and the back plate is also provided. A refractory heat-insulating panel having an inorganic fiber layer and / or an organic foam layer on the side. 2. A partition member is provided between the inorganic foam layer on the side of the front plate and the inorganic fiber layer and / or the organic foam layer on the side of the back plate of the refractory heat insulating material to partition them. Fire resistant insulation panel as described.