JPH10159244A - Improving method of productivity and functional physical property in inorganic board for building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase productivity, by forming an inorganic board by mixing black carbon or laminating it in an inorganic hardening raw material having a specified reflectivity at least in the infrared ray and the visible ray zone. SOLUTION: Charcoal powder or active carbon 2 is mixed with an inorganic hardening raw material 1 such as gypsum or bright cement having at least 50% or more reflectivity in the infrared ray and the visible ray to make a slurry. The gypsum slurry is formed by rolls while evenly diffusing the raw material between two cardboards 3 continuously delivered out in a gypsum board-production line and a gypsum board (a) with specified dimensions is formed through drying and cutting machines. Accordingly, when the board is used for substrate members, it adsorbs harmful formaldehyde or the like and purifies indoor air to greatly increase the habitability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is used as a method for improving the productivity of an inorganic board used as a base material of a building material or for improving functional properties such as livability during use.

[0002]

2. Description of the Related Art So-called inorganic boards such as gypsum board, asbestos cement board, siliceous board, and ALC board are widely used as building materials by taking advantage of their nonflammability. All of its production is performed by filling by roll working or roll or press molding in order to increase productivity, and the drying and curing is accelerated by including heating or exothermic processes in the process. Is common.

[0003]

The inorganic boat thus obtained has been widely used as a building material, but it does not positively improve the habitability (comfort) of humans living therein. The advantage of being non-flammable is that a large amount of building waste is generated after the demolition of the building, causing the problem that the disposal damages the ecological system (ecology). Is required.

It has recently been revealed that harmful substances such as organophosphorus, formaldehyde, and organic solvents emitted from newly constructed houses and buildings damage human mind and body more than expected and cause various diseases. However, effective countermeasures against this have not been advanced yet.

In view of the above situation, the present invention is intended to improve energy saving and productivity in the production of inorganic boards for building materials, and at the same time, to improve the habitability in products or to not damage the ecosystem at the time of disposal. The task is to improve it.

[0006]

SUMMARY OF THE INVENTION At least in the infrared and visible light, such as gypsum or light cement.
A black charcoal (2) is mixed with or laminated on an inorganic cured material (1) having a reflectance of 0% or more to form an inorganic board (a) for building materials.

[0007] The charcoal (2) used here is generally in the form of fine powder or granules. When mixed, the amount of the charcoal (2) is about 2 to 20 W% as it is, but when mixed, appropriate. A binder is required, and the amount occupied in the whole becomes larger.

[0008] The charcoal (2) used here is desirably relatively porous and rich in water absorption, such as activated carbon or pulverized charcoal.

[0010] Even if an inorganic board using a light-colored inorganic hardened material is used, as in the case of a certain type of ceramic board, when charcoal burns during the manufacturing process and the shape remains unretained, the present invention is not intended. Excluded from In that regard, gypsum board is a very desirable application.

[0010]

[Function] Needless to say, a white curable material such as gypsum has high reflection characteristics in the visible light region, but the characteristics usually extend to the infrared region. Therefore, taking the production process of gypsum board as an example, the gypsum slurry kneaded by the mixer is evenly spread between the upper paper and the lower paper that are continuously fed out, roll-formed, and cut into standard dimensions by an automatic cutting machine. In this case, it is necessary to raise the temperature in order to increase the curing and drying speed as much as possible to increase the efficiency, but at that time, the infrared energy which is the energy source is largely reflected by a white body such as gypsum, so the thermal efficiency is extremely large bad. When black charcoal is mixed there, it absorbs infrared rays to a high degree and converts it into heat, so that thermal efficiency increases and curing and drying proceed more quickly.

On the other hand, the obtained charcoal-containing board exhibits various characteristics as described below, and provides various advantages to the user as a building material. That is, first of all, due to its specific adsorptivity, it is possible to exert a deodorizing effect in a room, and at the same time, it adsorbs extremely harmful formaldehyde, organic phosphorus and the like radiated from a decorative panel, a PVC cloth and its adhesive.

In addition, it can exhibit a humidity control function of absorbing the moisture (humidity) in the air when it is high and releasing it when it is low, keeping the room at a comfortable humidity and preventing mold.

[0013] Further, the heat insulating property is improved by the infrared absorbing ability of the charcoal, so that the cooling / heating effect is improved, or the technique of placing the charcoal on the floor or the wall to improve the livability can be reproduced to some extent.

In addition, since carbon is a good conductor of electricity,
An action of blocking harmful electromagnetic waves can also be mentioned.

The inorganic hardened material which is the object of the present invention is nonflammable and cannot be incinerated, and is discarded as a large amount of building waste. However, microorganisms cannot grow on the hardened material. Non-ecological waste layers that do not decompose will accumulate. However, if carbon is mixed there, certain microorganisms always start to inhabit, and the circulation of organic matter gradually progresses, which helps to reduce the pollution of the disposal site.

[0016]

EXAMPLE 1 Gypsum 10 used as a raw material for gypsum board
1 part by weight of charcoal powder or activated carbon is kneaded together with water into parts by weight to form a slurry, which is uniformly dispersed between two cardboards (3) continuously fed out in a conventional gypsum board production line. It is roll-formed, dried and cut into a gypsum board of a predetermined size. The resulting dark gray gypsum board improves drying efficiency and, when used as a base material for new construction, adsorbs harmful formaldehyde and organic phosphorus to purify indoor air and regulate humidity and temperature. The occupancy can be greatly improved by the action and the action of blocking harmful electromagnetic waves such as high-voltage wires.

[0017]

[Embodiment 2] Pre-made plaster board, silica plate, AL
On the surface of the inorganic board (a) for a building material such as a C board, a granular or powdered charcoal (2) kneaded with a gas-permeable binder is applied on the entire surface or in a pattern. This is used as a base material for construction.

[0018]

Embodiment 3 A layer containing a high degree of charcoal (2) together with a gas-permeable binder is formed inside an inorganic hardened material (1) such as gypsum or white cement to form a laminated panel. Alternatively, an inorganic board (a) for a building material for a base is used.

[0019]

As described above, according to the present invention, the thermal efficiency in the drying step of the inorganic building material board and the like are improved and the productivity is improved. It absorbs harmful gases emitted from newly-constructed building materials, which have become extremely serious, to prevent their harm, and to prevent dew and mold from deodorizing and controlling temperature and humidity to improve habitability, block harmful electromagnetic waves, Has a great effect, such as promoting the inhabitation of microorganisms after disposal, protecting the ecosystem, and helping to reduce the pollution of disposal sites.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an example of the present invention.

FIG. 2 is a sectional view showing another example of the present invention.

FIG. 3 is a sectional view showing still another example of the present invention.

[Explanation of symbols]

 1. Inorganic hardened material 2. Charcoal 3. Cardboard a. Inorganic board for building materials

Claims (2)

[Claims] 1. An improvement in productivity and functional properties of an inorganic board for a building material, wherein black charcoal is mixed or laminated with an inorganic hardened material having a reflectance of at least 50% in at least infrared and visible light regions. Method. 2. The method for improving productivity and functional properties of an inorganic board for a building material according to claim 1, wherein the inorganic hardening material is gypsum, and the inorganic board for a building material is a gypsum board.