JP3023510U - Lightweight humidity control panel - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lightweight humidity control panel which is lightweight and has a humidity control function, and is excellent in heat insulation and fire resistance and particularly in strength. [Structure] Foamed ceramic in which ceramic fine hollow particles having a pressing strength of 600 kgf / cm ² or more, a bulk specific gravity of 0.3 to 0.5 g / cm ³ , and a melting point of 1500 ° C. or more are joined by a ceramic or a melt of a ceramic composition. The molded plate is used as the front and back materials, or the back material is an inorganic or wood panel, and the honeycomb structure or corrugated structure filled with humidity control material is the core material and the outer surface of the back material is impermeable to water. It is a coated lightweight humidity control panel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a panel which is used as a wall material, a ceiling material, a floor material, etc. of a general building, a house, a warehouse, etc., which has a light weight and humidity control function, and also has heat insulation and fire protection.

[0002]

[Prior art]

 Buildings in Japan have traditionally used materials such as wood, paper, shoji, and fusuma that can absorb and release moisture as interior materials. Since gypsum boards were used in general buildings as well, we could expect some moisture absorption and desorption function. However, in recent buildings, due to the demands for high airtightness, high heat insulation, and non-combustibility, the use of materials that absorb and release moisture has decreased, and damage due to dew condensation inside the building has become more common. It has been pointed out that it has a great impact on health.

Therefore, panels, coating materials, sheets and the like having a humidity control function have been announced as building members. Regarding panels, it has been announced that the material itself has a moisture absorbing / releasing function and the intermediate layer of the laminated panel is made of the material having moisture absorbing / releasing function. However, it cannot be said that the material having the moisture absorbing / releasing function, that is, the material having the humidity adjusting material mixed with the panel material itself, sufficiently exhibits the moisture absorbing / releasing function and the strength of the panel itself. Further, a material having a moisture absorbing / releasing function for the intermediate layer of the laminated panel, that is, a material having a humidity controlling layer has a weak strength of the humidity controlling layer, and therefore the strength of the panel itself cannot be increased.

[0004]

[Problems to be solved by the device]

 The present invention has been made in view of such circumstances, and an object of the present invention is to provide a lightweight humidity control panel which is lightweight and has a humidity control function and which is excellent in heat insulation and fire prevention and particularly in strength. .

[0005]

[Means for Solving the Problems]

As a result of earnest research as a solution to such problems, as a result of a ceramic or ceramic raw material, ceramic fine hollow particles having a compressive strength of 600 kgf / cm ² or more, a bulk specific gravity of 0.3 to 0.5 g / cm ³ , and a melting point of 1500 ° C. or more are used. The foamed ceramic molded plate joined by the melt of is used as the front and back surface materials or surface material of the lightweight humidity control panel, and the core material has a honeycomb structure or a corrugated structure, and the humidity control material is filled in this structural space.

When the foamed ceramic molded plate is used only as the surface material, the back surface material is an inorganic panel or a wood panel. In either case, the impermeable coating material is applied to the outer surface of the back surface material.

[0007]

[Action]

 The ceramic fine hollow particles used in the present invention have particularly high compressive strength as compared with the conventional fine hollow foam, and can withstand the high stress and shearing force generated in the manufacturing process of the foamed ceramic molded body. Is something that can be done. Further, by pressure molding, it is possible to obtain a strict foam ceramic molded plate despite its light weight.

The compressive strength of the fine hollow foam is synonymous with the hydrostatic strength, and the compressive strength is measured by pressurizing the fine hollow foam in water and transmitting the pressure applied to the water to the fine hollow foam. The pressure at which the hollow foam breaks is the compressive strength.

A foamed ceramic molded plate capable of exhibiting excellent performance must have a sufficient kneading step, and is particularly important for a foamed ceramic molded plate of uniform quality and good quality. When sufficient kneading is performed, it is said that the stress and shearing force applied to the ceramic micro hollow particles during the kneading will be about 400 kgf / cm ² . No conventional hollow foam for building materials can withstand such a high pressure, and thus none of them can be used as such a foamed ceramic molded plate and have sufficient performance. This is because most of them will be destroyed immediately.

When manufacturing a foam ceramic molded plate with fine ceramic hollow particles, the important factor is the thermal conductivity. Depending on the particle size of the fine hollow foam, it is generally around 0.1 (kcal / mhr r ° C.), and when half of the filled fine hollow foam is destroyed, the thermal conductivity is about 0.2 (kcal). / Mhr ° C.). Excellent heat and fire resistance can only be obtained if a perfect micro hollow foam that does not break is used. The ceramic fine hollow particles used in the present invention have significantly higher compressive strength than conventional fine hollow foams such as glass balloons, glass balloons, silica balloons and fly ash balloons. The hollow body of is 100% complete. Incidentally, the compressive strength of the conventional fine hollow foam is 80 to 300 kgf / cm ² .

The melting point of the ceramic fine hollow particles used in the present invention is 1500 ° C. or higher. Naturally, ceramic fine hollow particles are caused by their material, but generally, the higher the melting point, the higher the compressive strength. If the compressive strength is 600 kgf / cm ² or more, the melting point is 1500 ° C. or more.

The foamed ceramic molded plate is formed by pouring the slurry into a mold, curing it for a predetermined time, and then firing it. The firing temperature is 700 to 1500 ° C., which depends on the melting point depending on the type of ceramic or ceramic composition used. The ceramic fine hollow particles are joined at points to firmly bond them. The ceramic or ceramic composition used as a binder is melted and the ceramic fine hollow particles are fixed by this melt. However, the ceramic fine hollow particles should not be melted during firing, and the strength should not be reduced by heating. Therefore, the melting point of the ceramic fine hollow particles must be 1500 ° C. or higher.

As described above, the ceramic fine hollow particles used in the present invention are obtained by foaming a composition composed of 38 to 42% alumina, 58 to 62% silica, and 1.5 to 2.0%, and the physical properties thereof. Is composed of only hollow particles having a compressive strength of 700 kgf / cm ² , a melting point of 1600 ° C., a bulk specific gravity of 0.3 to 0.5 g / cm ³ , and a thermal conductivity of 0.1 (kcal / mhr ° C.). The ceramic fine hollow particles have a particle size in the range of 20 to 350 μm, and are mixed and used by adjusting the particle size so that the fineness is 20 to 75 μm, the medium size is 75 to 150 μm, and the coarse size is 150 to 350 μm. The bulk specific gravity is heavier for finer particles and lighter for coarser particles. Therefore, the range of bulk specific gravity is 0.3 to 0. It becomes 5 g / cm ³ .

The ceramic composition of the present invention means B ₂ O ₃ , SiO ₂ , GeO ₂ , ZrO ₂ , P ₂ O ₅ , As ₂ O ₅ , Sb ₂ O ₃ , Bi ₂ O ₃ , P ₂ O _3, etc. includes the N _a 2 _O acidified _{oxides, K 2 O, C a O} , basic oxides, _Al 2 _O 3, or _the like _{MgO, Fe 2 O 3, ZnO} , PbO, those obtained by adding like TiO ₂ . For example _{SiO 2 - Na 2 O-B} 2 O 3, SiO 2 -Na 2 O-CaO, SiO 2 -K 2 0-CaO, Al 2 O 3, SiO 2 -Na 2 O-CaO-B 2 O 3, such as _{al 2 O 3 -SiO 2 -TiO 2} -CaO-B 2 O 3 is used. The ceramic porcelain is one of natural materials such as kaolin, plastic clay (ball clay, etc.), sericite, porcelain stone, wax stone, pentonite, silica stone, feldspar, limestone, dolomite, bone ash, water glass, etc. Alternatively, two or more kinds can be mixed and used.

The foamed ceramic molded plate is extremely light in weight because the ceramic microscopic hollows having high strength are joined together and this portion is fixed by the welded body of the ceramic or ceramic composition, and the specific gravity of the foamed ceramic molded plate is It becomes 0.5 to 0.7 (g / cm ³ ). Further, since the pressure is applied at 50 to 500 kgf / cm ² at the time of molding, the foamed ceramic molded plate becomes dense and has high strength, and the compressive strength is 100 kgf / cm ² or more.

The high-strength ceramic fine hollow particles can be completely present in the foamed ceramic molded plate in the form of a hollow body. It was found that there are innumerable capillary-shaped air circulation holes.

Due to the innumerable mesh-shaped capillary air circulation holes, air flows from the surface of the foamed ceramic molding plate even at a low air pressure of only about 1 (kgl / cm ² ). That is, the air from the surface flows not only to the back surface of the foam ceramic molded plate but also to the four rounds of the foam ceramic plate. Especially in the case of hot air, most of it flows upward from the surface and diffuses from the upper end of the foam ceramic molded plate.

Therefore, even if a flame is applied to the surface of the foam ceramic molded plate according to the present invention, high-heat air due to the flame flows evenly over the foam ceramic molded plate. Therefore, the backside temperature does not rise so much and the entire foam ceramic molded plate acts as a heat sink, so it can be said that the fire resistance is extremely high.

When the foamed ceramic molding plate is placed horizontally and water is dripped on the surface thereof, the dripped water can be immediately absorbed. That is, the water dripped into the capillary-shaped air circulation holes that are stretched like a mesh in the foam ceramic molded plate immediately flows and is absorbed. The absorbed water then flows horizontally downward and does not immediately penetrate the back surface. Water flows into the capillary air flow holes of the foam ceramic molded plate, and the amount of water absorption is almost the same as the weight of the foam ceramic molded plate. Moreover, this absorbed water naturally dissipates when the air dries. It has a humidity control function that can repeatedly absorb and dissipate water by drying and drying the air.

Since such fine air-flowing capillaries are innumerably spread out like a net, air flows through the foamed ceramic molded plate by a minute pressure. Therefore, by using a foamed ceramic molded plate as the front and back surface material or surface material and forming a laminated panel with a honeycomb structure or corrugated structure as the intermediate layer, it is possible to make a lightweight panel with heat insulation and fire resistance and strength. In addition, it is possible to add a humidity control material into the structural space of the intermediate layer to provide a more excellent humidity control function.

As the core material having the honeycomb structure and the corrugated structure, a core material formed of flame-retarded kraft paper and / or a 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 paper that has been subjected to the flame-retardant treatment is ignited, crystal water is generated from aluminum hydroxide to remove heat, and the paper does not burn. After that, the oxidized rusty aluminum remains and the kraft paper is carbonized. Further, the state of being coated with water glass can easily carbonize the kraft paper.

When the core material having the honeycomb structure and the corrugated structure is formed of an incombustible sheet, the incombustible sheet used is an inorganic mineral fiber sheet made of calcium silicate or magnesium silicate as a raw material.

The humidity control material in the present invention is an inorganic material, and for example, one or more kinds of activated alumina, alumina gel, silica-alumina gel, silica gel, geolite, zeolite and the like can be used. When these are used, the particle size is 0.2-5. By setting the range to 0 mm, it is possible to quickly absorb and release moisture.

The adhesive for adhering the honeycomb structure or the corrugated structure, which is the core material, to the front and back surface materials may be any hydraulic inorganic substance as long as it exhibits curability by kneading with water. For example, Portland cement, alumina cement, roman cement, refractory cement, water glass cement, gypsum, lime, magnesia cement, etc. are used. Portland cement, alumina cement, water glass cement and the like are particularly preferably used in terms of water resistance, fire resistance and strength. Alternatively, an organic adhesive may be used.

The water-impermeable coating material applied to the outer surface of the back surface material is for preventing the absorption of water from the back surface material, and is not particularly limited, and is an emulsion type used for waterproofing general-purpose coating film. Any waterproof coating material may be used.

The inorganic panel or the wood panel to be used when the foamed ceramic molded plate is not used for the backing material may be any one that is lightweight and has strength, heat insulation and low water absorption, such as flexible board and fiber. Reinforced cement perlite board, fiber reinforced cement board, pulp cement board, plywood, fiber board and the like can be preferably used.

[0027]

【Example】

 Hereinafter, a detailed description will be given based on an embodiment of the present invention.

Example 1 Complete hollow particles having a compressive strength of 700 kgf / cm ² or more, a bulk specific gravity of 0.3 to 0.5 g / cm ³ , a melting point of 1600 ° C. and a thermal conductivity of 0.1 (kcal / mhr ° C.). A mixture of 150 parts by weight of ceramic fine hollow particles composed only of 30 parts by weight of ceramic or ceramic composition, 1.8 parts by weight of admixture (stabilizer, dispersant, viscous agent, etc.) and a small amount of water. The mixture was thoroughly kneaded with an Omni mixer (manufactured by Chiyoda Giken Kogyo Co., Ltd.) to prepare a composition for a foamed ceramic molded plate.

The fine particle size of the ceramic fine hollow particles is adjusted to 10 parts by weight of fine particles, 20 parts by weight of medium particles, and 30 parts by weight of coarse particles, and the ceramic or ceramic composition for joining the ceramic fine hollow particles to each other is feldspar, limestone, and SiO 2. _A component composed of ₂ -Na ₂ O-CaO was used.

The composition for a foamed ceramic molded plate was poured into a mold having dimensions of 900 × 1800 × 100 mm and uniformly applied with a load of 200 kgf / cm ² . After molding, it was aged for 24 hours, demolded, and fired at 1100 ° C. for 60 minutes to produce front and back materials of a lightweight humidity control panel.

The core material uses a honeycomb structure formed of a non-combustible sheet of calcium silicate with a cell size of 50 mm and a core material thickness of 30 mm, and the adhesive used to bond the front and back surface materials to the foam ceramic molded plate is The paste was used by adding 25 parts by weight of gypsum to 100 parts by weight of water-glass cement. In a space portion of the honeycomb structure, 100 parts by weight of silica gel having a particle size range of 0.2 to 5.0 mm was mixed with 20 parts by weight of activated alumina having the same particle size range and filled.

A general commercially available acrylic emulsion waterproof coating material was applied to the outer surface of the backside material of the lightweight humidity control panel to block ingress of water and absorption of water from the outside. By using the lightweight humidity control panel produced in this way as an inner wall material, it was possible to exhibit an excellent moisture absorbing / releasing function.

Actual Rotation Example 2 In Example 1, a lightweight humidity control panel was prepared by replacing only the backing material with a flexible board having a thickness of 8 mm, and showed an excellent moisture absorbing / releasing function as an inner wall material as in Actual Rotation Example 1. It was confirmed.

[0034]

[Effect of device]

The lightweight humidity control panel of the present invention is extremely lightweight with a specific gravity of 0.50 to 0.80 g / cm ³ , a high moisture absorption and desorption amount of 160 to 190 (g / m ² · 24 hr), and a thermal conductivity of 0. It is 10 to 0.12 (kcal / m ² · h ° C.) and has a compressive strength of 100 to 150 (kgf / cm ² ) and is a completely non-combustible material. As described above, the lightweight humidity control panel according to the present invention is not only lightweight but has moisture permeability and sufficiently exhibits moisture absorption and desorption, but also has sufficient strength and is excellent in heat insulation and fire prevention. Is.

[Brief description of drawings]

FIG. 1 shows a honeycomb structure used in the present invention.

FIG. 2 shows a corrugated structure used in the present invention.

FIG. 3 is a perspective view showing a lightweight humidity control 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. Foam ceramic molded plate 7. Humidity control material

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location E04B 1/94 V E04C 2/36 N 2/52 Z

Claims (3)

[Scope of utility model registration request] 1. Foaming in which ceramic fine hollow particles having a compressive strength of 600 kgf / cm ² or more, a bulk specific gravity of 0.3 to 0.5 g / cm ³ , and a melting point of 1500 ° C. or more are joined by a melt of a ceramic or ceramic composition. A lightweight humidity control panel characterized in that a ceramic molded plate is used for front and back surfaces, and a core material has a honeycomb structure or a corrugated structure filled with a humidity control material. 2. The lightweight humidity control panel according to claim 1, wherein a water impermeable coating material is applied to the outer surface of the foamed ceramic molded plate of the back surface material. 3. The lightweight humidity control panel according to claim 1, wherein the backing material is an inorganic panel or a wood panel, and an impermeable coating material is applied to the outer surface of the panel.