JPH07300913A - Light weight heat insulating fire proofing panel - Google Patents

Abstract

PURPOSE:To obtain excellent fire proofing performance by filling inorganic light weight composition employing inorganic binder in the cavities of each core member, and thereby forming both surfaces of a core member out of the inorganic light weight composition. CONSTITUTION:Inorganic light weight composition 6 employing inorganic binder such as Portland cement, aluminum cement and the like is filled in the cavities of a honeycomb structure or a corrugate structure which is turned out to be the core member of a panel. Both surfaces of the core member filled with the composition are coated with inorganic light weight composition 6 employing inorganic binder so as to be formed into both surface members of the core member. In this case, in the inorganic light weight composition 6, ceramic balloons are contained, each of which has the breaking hydraulic strength of roughly equal to or more than 600Kgf/cm<2>, and is a very small hollow spherical body composed of only a complete foamed body. Therefore, impact strength and bending strength can thereby be increased.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is a lightweight and heat-insulating and fire-proof panel for use as an inner wall material, an outer wall material, a roof material, a ceiling material, a fence, a gate pillar, etc. of a building such as a general building or a house. It is about.

[0002]

2. Description of the Related Art Conventionally, a panel having fireproof performance has been a heavy ceramic or metal type panel. In addition, there are panels with heat insulation performance that use organic synthetic resin foam and those that use inorganic fiber material. These can be used alone or as the core material of the panel The material was composed of a non-combustible board or the like. A heat insulating panel formed of a synthetic resin foam or an inorganic fiber material alone as a heat insulating material lacked strength and rigidity, and was insufficient in terms of water resistance, weather resistance and the like. The heat-insulating material used as the core material and the front and back materials made of non-combustible boards and the like are heavy and difficult to handle, and the workability is poor.

Among inorganic ceramic materials, ALC, aerated concrete, concrete with lightweight aggregate, calcium silicate board and the like are lightweight and have heat insulating properties. Although they have fireproof performance, they have drawbacks in strength, especially in bending strength and impact strength. For this reason, it is often seen that the end of the member is chipped during transportation or construction.

In the organic system, it can be said that even if the front and back surfaces are made of non-combustible boards and the synthetic resin foam is used as the core material, the fire prevention performance is still insufficient.

There is also a panel in which a lightweight aggregate is mixed with a hydraulic inorganic wing, such as cement, and reinforcing fibers are added thereto. In particular, there are those in which foamed lightweight aggregates such as perlite and silas paloon are mixed. Since perlite is an open pore, it is not possible to achieve sufficient weight reduction and heat insulation. Further, since the breaking hydraulic strength of the shirasu balloon is 80 kgf / cm ² or less, most of the shirasu balloon is broken during the process of kneading the materials and molding into panels. A method of lowering the pressure during molding has been announced, but irregular cells are mixed in the molded panel, resulting in a marked decrease in strength.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to make it lightweight and have heat insulating property and fireproof property and excellent strength, particularly bending strength and impact strength. It is to provide a lightweight insulation fireproof panel.

[0007]

[Means for Solving the Problems] As a result of intensive research aimed at solving such problems, as a result of the flame-retardant kraft paper and / or noncombustible sheet, a core material having a honeycomb structure or a corrugated structure is made of a completely foamed material. The inorganic lightweight composition containing the ceramic balloon, which is a fine hollow sphere, as a main constituent material is filled. Further, it has been solved by a lightweight heat-insulating fireproof panel characterized in that the inorganic lightweight composition also forms front and back materials of a core material.

The present invention will be described below. An inorganic lightweight composition using an inorganic binder is filled in a space having a honeycomb structure or a corrugated structure which is a core material of a panel. The front and back surfaces of the filled core material are coated with an inorganic lightweight composition using the inorganic binder to form front and back materials to make a lightweight lightweight and heat-insulating fireproof panel.

The inorganic binder may be any hydraulic inorganic substance as long as it exhibits curability when kneaded with water. For example, Portland cement, alumina cement, roman cement, refractory cement, water glass cement, gypsum, lime, magnesia cement and the like are used. In particular, Portland cement, alumina cement, water glass cement and the like are preferably used in terms of water resistance, fire resistance and strength.

[0010] Ceramic balloons, which are fine hollow spheres made of a completely foamed material which is a main constituent material by being mixed with an inorganic binder for the purpose of weight reduction, heat insulation and fire protection, include glass balloons and silica balloons. , Alumina balloons, zirconia balloons, aluminosilicate balloons and the like can be used. The ceramic balloon, which is a fine hollow sphere, is a completely foamed body having no unfoamed body and a broken hydraulic strength of 600 kgf / cm ² or more can be used to improve the lightweight and strength performance of the molded panel. Therefore, glass balloons, silica balloons and the like are preferably used. The amount of the ceramic balloon used is preferably 10 to 30 parts by weight based on the weight of the entire inorganic binder.

In order to further improve the strength of the lightweight heat-insulating fireproof panel and make the inorganic lightweight composition tough, various inorganic or / and organic fibers of short fibers are used. Inorganic alkali-resistant glass wool, rock wool, and ceramic wool. Wollastonite, kyanite, sepiolite, etc. can be used. Particularly, sepiolite, wollastonite and the like are preferably used. The inorganic fiber, which is a short fiber, is 0.5 to 1 with respect to the total weight of the molded panel.
It is preferably used in the range of 5 parts by weight. When using an organic fiber, it is not necessary to use a short inorganic fiber, but they may be used in combination.

When organic short fibers are used to make an inorganic lightweight composition tough, vinylon fibers, polypropylene fibers, which are short fibers in the range of 1 to 20 mm,
Polyethylene fiber, pulp fiber and the like can be used, but vinylon fiber is more preferably used in consideration of impact strength.

When organic short fibers are used, the amount is 5 parts by weight or less based on the total weight of the molded panel. If it is added more than this, the moldability and fire resistance are impaired. Preferably 1
~ 3 parts by weight. When organic short fibers and short inorganic fibers are used in combination, the organic short fibers are in the range of 1 to 3 parts by weight, and the short inorganic fibers are 0.5 to 8 parts.
The range is parts by weight. When using only inorganic short fibers without using organic short fibers, the amount is 2 to 15 parts by weight.

As a constituent of an inorganic lightweight composition using an inorganic binder, a ceramic balloon that is a fine hollow sphere, an inorganic or / and organic reinforcing short fiber, or a thermally decomposable inorganic material or an inorganic refractory material, Fine powder inorganic filler, other high-strength admixture, defoaming agent, material separation reducing material,
Add a water reducing agent.

In order to further improve the fireproof performance of the lightweight heat-insulating fireproof panel, one or two of aluminum hydroxide, calcium carbonate, gypsum, dolomite, clay, talc, chamotte, mica and the like can be used as the heat-decomposable inorganic material or the inorganic fireproof material. Add more than one seed. The addition amount is 1 to 10 parts by weight with respect to the weight of the inorganic binder. Of these, aluminum hydroxide, gypsum and mica are preferably used.

In order to make a hardened body of an inorganic lightweight composition by an inorganic binder that fills voids between ceramic balloons, which are fine hollow spheres, with a uniform thickness into a dense, continuous chain-like hardened body, a fine powdered inorganic filling An amorphous silica compound is blended as a material. As the amorphous silica compound, silica sand, diatomaceous earth, silicon carbide, silica stone powder, silica fume, calcium metasilicate and the like can be used. In particular, silica fume, calcium silicate, silica stone powder and the like are preferably used. 10 to 100 relative to the weight of the inorganic binder
Blend in the range of parts by weight.

As the core material having the honeycomb structure and the corrugated structure, a core material formed of flame-retardant kraft paper and / or non-combustible sheet is used. As one method of making the kraft paper flame-retardant, the kraft paper immersed in water glass or a suspension of water glass and aluminum hydroxide is dried by hot air at about 100 ° C. Even if the kraft paper that has been subjected to the flame-retardant treatment is ignited, crystal water is generated from the aluminum hydroxide to take heat, and it does not burn. After that, oxidized and dry aluminum remains, and the kraft paper is carbonized. Further, the state of being covered with water glass can easily carbonize the kraft paper.

As the non-combustible sheet used when the core material having the honeycomb structure and the corrugated structure is formed of the non-combustible sheet, an inorganic mineral fiber sheet made of calcium silicate, magnesium silicate or the like is used.

[0020]

The heat-insulating, light-weight fireproof panel of the present invention uses ceramic balloons, which are fine hollow spheres composed of a complete foam, as its main constituent material and is cured with an inorganic binder, so that it is lightweight and has excellent heat insulation properties. Yes It has excellent fire protection performance.

Ceramic balloons, which are fine hollow spheres for improving the bending strength and impact strength of a lightweight heat-insulating fireproof panel, have a breaking water pressure strength of 600 kg f / cm ² or more and only a completely foamed body containing no unfoamed body. Use the one configured in. As a result, it was possible to manufacture the ceramic balloon without any damage in the process of molding the lightweight heat-insulating fireproof panel, and it was possible to secure the desired impact strength and weight reduction, heat insulation performance, and fire protection performance.

By using a flame-retardant kraft paper or an incombustible sheet as the core material of the lightweight heat-insulating fireproof panel, it is possible to improve fireproof performance, bending strength, and impact strength.

[0023]

[Examples] Specific examples will be described below.

Example 1 A paper honeycomb having a cell size of 50 mm and a core material thickness of 30 mm was subjected to a flame-retardant treatment to obtain a core material for a lightweight heat-insulating fireproof panel. An inorganic lightweight composition using an inorganic binder is formulated as shown below, and the inorganic binder is first uniformly mixed by an omni mixer (Chiyoda Giken Kogyo),
Next, the inorganic lightweight composition containing materials such as ceramic balloons was kneaded with a concrete mixer. The space of the core material is filled with this kneaded product and 5
It was applied in a thickness of mm. The dimensions of the lightweight insulation panel formed are 1800 mm x 900 mm x 40 mm. A test was carried out by curing at room temperature and atmospheric pressure for 48 hours, curing at 20 ° C. for 1 month or more, and then leaving it in a desiccator for 48 hours.

The mixing ratio of the inorganic-based composition is shown below. The unit is parts by weight. (Inorganic binder) Portland cement 100 parts by weight Water-soluble alkali silicate 20 〃 Gypsum 30 〃 (inorganic lightweight composition) Inorganic binder 100 parts by weight Silica balloon (particle size 20 to 300 μm) 25 〃 (breaking hydraulic strength 900 kg f / Cm ² ) (“Microcells” by Onoda Cement Co., Ltd.) Vinylon fiber (20 denier, 1 to 15 mm) 2 〃 Wollastonite 3 〃 Silica fume 50 〃 Others 5 〃 Water 40

Example 2 A honeycomb structure formed of a non-combustible sheet of calcium silicate having a cell size of 50 mm and a core material thickness of 30 mm was used as a core material for a lightweight heat-resistant fireproof panel. The blending ratio of the lightweight composition using the inorganic binder, the dimensions of the formed lightweight heat-insulating fireproof panel, the molding method, the curing, etc. are all the same as in Example 1.

Comparative Examples 1 to 2 The light weight compositions of Examples 1 and 2 were mixed in the ratio of Shirasu balloon (particle size 20 to 300) instead of silica balloon.
μm) was used.

Specific gravity, heat insulation performance, bending strength, and impact strength were evaluated for the examples and comparative examples of the lightweight heat-insulating fireproof panel, and the results are shown in Table 1. The evaluation method is as follows.

Thermal conductivity is measured according to JIS A1412. The thermal conductivity at an average temperature of 25 ° C. is evaluated. 0.035 kcal / mh ° C or higher ………… × 0.035 to 0.028 〃 〃 ………… ○ 0.028 〃 or less ………… ◎

Bending Strength A bending test is performed according to JIS A1414. The test piece is a lightweight insulated fireproof panel without a frame. It is evaluated by the amount of deflection under a load of 50 kg. 10 mm or less ………… ◎ 10 to 15 mm ………… ○ 15 mm or more ………… ×

Impact strength An impact test is performed according to JIS A1421. It is evaluated by the height of the falling weight that causes cracks or cracks in the specimen. The weight used the eggplant shape 500g. 2m or more ………… ◎ 1-2m ………… ○ 1m or less ………… ×

[0032]

[Table 1]

[0033]

EFFECTS OF THE INVENTION The lightweight heat-insulating fireproof panel of the present invention mainly comprises ceramic balloons which are fine hollow spheres having a breaking water pressure strength of 600 kgf / cm ² or more and made of only a complete foam containing no unfoamed material. An inorganic lightweight composition using an inorganic binder as a material, and a honeycomb structure or corrugated structure formed of flame-retarded kraft paper and / or an incombustible sheet as a core material Fill with an inorganic lightweight composition.

The inorganic material composition is applied to the front and back surfaces of the core material while filling the space of the core material, and integrally molded with the front and back material. With such a configuration, it is possible to provide a lightweight heat-insulating fireproof panel which is lightweight and has excellent heat insulating performance and fireproofing performance.

[Brief description of drawings]

FIG. 1 shows a honeycomb structure of the present invention.

FIG. 2 shows a corrugated structure of the present invention.

FIG. 3 is a perspective view showing a panel of the present invention.

[Explanation of symbols]

 1. Honeycomb structure 2. Corrugated structure 3. Cell size 4. Core material thickness 5. Corrugated board thickness 6. Inorganic lightweight composition

Claims (5)

[Claims] 1. A lightweight heat-insulating fireproof panel using a core material as a reinforcing core, wherein the space of the core material is filled with an inorganic lightweight composition using an inorganic binder, and
A lightweight heat-insulating fireproof panel, characterized in that front and back materials of a core material are also formed by the composition. 2. The lightweight heat-insulating fireproof panel according to claim 1, wherein the core material has a honeycomb structure or a corrugated structure partitioned into a plurality of spaces. 3. The inorganic lightweight composition has a breaking hydraulic strength of 60.
The lightweight heat-insulating fireproof panel according to claim 1, which contains as a main constituent material a ceramic balloon which is a fine hollow sphere having a weight of 0 kgf / cm ² or more and constituted only by a complete foam. 4. The lightweight heat-insulating fireproof panel according to claim 1, wherein the honeycomb structure and the corrugated structure are formed by a flame-retardant kraft paper. 5. The lightweight heat-insulating fireproof panel according to claim 1, wherein the honeycomb structure and the corrugated structure are formed by an incombustible sheet.