JPS6116116Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fireproof insulation panel having a composite board structure, which has excellent fire resistance and excellent heat insulation and weather resistance in construction panels.

Recently, there has been a significant demand for insulation properties in building materials, and synthetic resin foams exist as materials that meet this requirement. In addition, many of these types of heat insulating materials are used that mainly function as core materials and heat insulating materials, adhesives, and the like. Furthermore, as building materials, composite structures such as panels in which a metal plate, which is highly workable, nonflammable, chemical resistant, weather resistant, and the core material etc. are integrated as an exterior material, are commercially available. In addition to heat insulation properties, this type of panel is also subject to stricter legal regulations due to its fire resistance, which is related to the generation of toxic gases in the event of a fire. Therefore, in the past, for example, Japanese Utility Model Publication No. 46-20443, Japanese Patent Publication No. 3235-1972, Japanese Patent Publication No. 95017-1973, Japanese Patent Publication No. 53
As shown in No. 30736, a method of making the flammable core material flame retardant (additional type) has been proposed, and has shown some degree of flame retardant effect. However, in the additive flame retardant method, the synthetic resin foam raw material and the flame retardant additive react with one of the components during the reaction foaming of the resin and roughen the foam structure, resulting in improved insulation and effective foaming. There was an inconvenience that led to a decrease in (effective utilization of raw material usage). Moreover, since the moisture content of the substance added for flame retardancy decreases, the expected formation of the inorganic foam layer cannot be expected in the event of a fire, and the flame retardancy ultimately deteriorates, resulting in a panel with reduced properties. It was hot.
Furthermore, borax and sodium metaborate are soluble in water and have melting points of about 62°C and 54°C, so they are not very weather resistant and may be susceptible to melting and deterioration. Moreover, it had the disadvantage that even alkali-resistant synthetic resin foam could be easily destroyed depending on the strong alkalinity (PH9), temperature, and moisture. In other words,
In the outer wall, the temperature on the back side of the metal plate in midsummer is approximately
As the temperature rises to 70 to 80 degrees Celsius, moisture evaporates and melts in areas where the borax etc. are in direct contact, resulting in the synthetic resin foam being destroyed as it is exposed to the harsh conditions mentioned above. In an attempt to improve these drawbacks, the internal voids of inorganic porous grains, such as perlite grains, are impregnated with the aforementioned borax, etc., and the outer periphery of the flame retardant is coated with paint or other resin, and the flame retardant is foamed with synthetic resin. There is also a core material that is added and mixed into the structure and dispersed to improve fire resistance. However, in this case, it is difficult to completely coat the granular flame retardant without pinholes due to the coating technology, and ultimately the destruction of the synthetic resin foam takes a little longer than the conventional method described above. I could only expect such an effect.
In addition, when scattered in the synthetic resin foam structure, the above-mentioned destruction not only spreads throughout the core material, but also
Since the flame retardant was difficult to disperse uniformly, there were also disadvantages such as the synthetic resin foam being destroyed when exposed to high temperatures.

In order to eliminate these drawbacks, the present invention interposes a heat conduction suppressing layer, etc. on the back surface of the outer surface material, the surface in contact with the so-called synthetic resin foam, to reduce the temperature of the outer surface by at least 5 to 10 degrees Celsius. In addition, we propose a fireproof insulation panel in which a fireproofing agent containing borium, silicates, etc. is distributed over the entire surface or at appropriate intervals, and the weather resistance of the fireproofing agent is greatly improved.

An embodiment of the fireproof insulation panel according to the present invention will be described in detail below with reference to the drawings. Figure 1 a-c
1 is a partially cutaway perspective view and a cross-sectional view showing an example of the above panel, and 1 is an outer surface material such as a metal plate (color iron plate, stainless steel plate, aluminum plate,
The main body 2 has a concave cross section, and a male connecting part 3 and a female connecting part 4 are formed on the left and right side walls of the main body 2. 5 is a heat conduction suppressing layer laminated or laid entirely on the back surface of the main body 2, and has a heat insulating property that reduces the heat applied to the outer surface material 1 by at least 5 to 10 degrees Celsius;
It has a heat insulation function. This serves to prevent melting, deterioration, and destruction of the fire retardant wall material described below. Specific examples include foam sheets, synthetic resin foams (including foam paint layers),
Asbestos, rock wool, gypsum fiber or 0.1
It is made by laminating one or two layers of aluminum foil with a thickness of about mm. In addition, in the case of a synthetic resin foam layer, 5
The above-mentioned level of heat insulation is possible with a thickness of about mm, and a heat-insulating layer thicker than this is not very preferable in terms of fire resistance. Reference numeral 6 denotes a fire retardant, which is suitably distributed over the entire surface of the heat conduction suppressing layer 5 or sparsely as shown in FIGS. 1a to 1c. This fire retardant 6
When the outer surface material of the panel is exposed to high temperatures,
The surface is cooled by crystallization water and expanded to form an inorganic foam layer to protect the synthetic resin foam serving as a heat insulating layer. Furthermore, this fire retardant 6 has almost no adverse effect on the reaction foaming of the raw materials for the synthetic resin foam described later, and reliably exhibits the desired fire retardant properties over a long period of time. To explain further, the fire retardant 6 is a wall material 7 made of one or more types of plastic film that is impermeable, has a low water vapor permeability, and is chemically resistant (especially alkaline). One or more salts 8 are sandwiched and sealed, or borosilicate 8 is impregnated into a core material 9, such as a glass fiber sheet, an asbestos sheet, a nonwoven fabric such as paper or cotton, and this is cut into small pieces. It is made of a fire retardant or the like which is cut and sealed by sandwiching it in a concave shape through the wall film material 7.

To explain further here, the wall film material 7 includes polyethylene, vinylidene chloride, vinyl chloride, polyamide resin, ABS resin, polypropylene, polyacetal, nylon, polyester, polycarbonate, glass fiber-containing film, etc., and the borate 8 includes Borax, meta-borax soda,
4-8 Sodium borate. Examples of the silicate 8 include sodium silicate and sodium metasilicate, to which dibasic sodium phosphate and sodium metaphosphate are added, for example. In addition, this boron, silicates, etc.8
Due to Sanderutsch, it is formed into a flat, rod-like, or tape-like shape. Furthermore, the cross-sectional shape of the fire retardant 6 is formed as shown in FIGS. 2a to 2h. That is, Fig. a shows a structure in which borium and silicate 8 are sealed as they are between two film-like wall materials 7, and the upper and lower surfaces are formed into an arc shape, and Fig. b shows a core material 9.
It is impregnated with boron, silicates, etc. 8, formed into flakes, and sandwiched with a film-like wall material 7. Fig. c shows a fire retardant with one side flat and the other side uneven. Fig. d shows a fire retardant shown in Fig. a formed into a sheet, with cut holes 1 in the dividing strips 10.
1 is bored and serves as an inlet for the synthetic resin foam described later. In Figure e, the fire retardant 6 is formed into a sheet shape so that it can be divided into small pieces via partition walls 12. Further, Fig. f shows a fire retardant 4 formed into a rod shape, Fig. G shows a fire retardant 6 which can be divided into smaller pieces from Fig. F, and Fig. H shows a fire retardant 6 formed into a tape shape. Of course, these f to h can also be formed into a sheet shape like the above-mentioned d and e.

13 is a synthetic resin foam, for example, raw materials for polyurethane foam, raw materials for polyisocyanurate foam (phenol modified, urethane modified), raw materials for polyurea foam, raw materials for phenol foam, etc. are discharged in liquid form, and eventually foam, so-called It is made of foam and mainly functions as a fixing layer for the fire retardant between the heat insulating layer and the adhesive. 14 is the back material,
For example, it is made of a laminate of one or more of kraft paper, asbestos paper, asphalt felt, plastic sheet, metal foil, etc., or a material that has been treated with water repellent treatment.

When observing the performance of the fireproof heat insulating panel according to the present invention, the following results were obtained. First, the water resistance and weather resistance of the fire retardant 6 were measured, and then the water resistance, weather resistance, and fire resistance of the panel on which it was installed were measured. Therefore, a polyethylene film (70 to 80 microns thick) was used as a wall material to seal 20 mm ³ of sodium metaborate into one cavity shown in FIG. 2e by heat welding. This at 10℃
Although it was immersed in water for about 20 days, no alkaline elution was observed. When this fire retardant was exposed to 70°C for 3 hours, the film gradually softened and some of the sodium metaborate melted, and the voids where this sodium metaborate existed expanded due to the film's elongation, absorbing this increase in volume. I didn't want it to explode. In this case, it is thought that the voids expand because water vapor pressure is also applied. In addition, in the panel where this is installed, the outer surface material 1 is 0.35mm.
A colored iron plate is formed into the cross section shown in Fig. 1a, the fire retardant 6 shown in Fig. 2 is laid on it as shown in the figure, the polyisocyanurate foam raw material is discharged onto it, and kraft paper ( Waterproof treated) 14 were laminated and cured to produce a panel with a cross section as shown in FIG. 1a. This was attached to the outer wall on the south side of the house. The climate was exposed to solar heat for two months from August 1st to September 30th. When this panel was removed and observed, no destruction of the fire retardant 6 was observed. Furthermore, this panel is heated to 900℃
When the outer surface material 1 side was exposed to direct flame for 10 minutes, some smoke was observed, but it was within the legal limit.
Polyisocyanurate foam 11 and outer surface material 1
In between, an inorganic foam layer (melting point: 960°C) was formed reliably and densely, and almost no combustion of the foam was observed. What I explained above is
This is only one embodiment of the present invention, and it is also possible to form a panel in which the fire retardant 6 is also applied on the back side.

As mentioned above, the fireproof heat insulating panel according to the present invention has the characteristic of being able to maintain the desired performance of a fire retardant that exhibits extremely strong fire retardant properties at high temperatures over a long period of time. ○ When forming a synthetic resin foam, the distributed addition of fire retardants, which previously had a major negative impact on the structure and reaction system, is added and installed without inhibiting the reaction, resulting in high heat insulation properties. It also has the characteristic of being able to obtain high mechanical strength. ○ Since strongly alkaline borates etc. do not elute into the synthetic resin foam, they are not destroyed at all, and the panel has excellent weather resistance and water resistance.

[Brief explanation of the drawing]

Figures 1 a to c are a perspective view and a cross-sectional view showing an embodiment of the fireproof heat insulating panel according to the present invention, and Figures 2 a to h show an example of a fire retardant used in the panel according to the present invention. FIG. 2 is a cross-sectional view and a perspective view. 1...Outer surface material, 6...Fire retardant, 7...Wall film material, 13...Synthetic resin foam.

Claims (1)

[Scope of utility model registration request] The outer surface material has a concave cross-section formed by molding a metal plate, and a male connecting part and a female connecting part are provided at the left and right ends of the outer surface material. Synthetic resin foam is filled into the concave shape of the outer surface material, and a backing material is placed on top of it. In the provided panel, one or more borates, silicates, etc., which release crystal water and expand under high temperature to form an inorganic foam layer, are used as they are, or small pieces made by impregnating the core material are used. A heat conduction suppressing layer with a thickness of at least 0.1 to 3 mm is interposed on the back surface of the outer surface material, in which one or more sheet-like or linear fire retardants are encapsulated through an air-permeable film-like wall material. Features fireproof insulation panels.