JPH0972015A - Building material for wall and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a thin wall building material and manufacture it at low cost by applying foaming metal slurry to the surface of a plate building base material and then sintering it to form a porous metal. SOLUTION: 0.05-10wt.% non-water-soluble hydrocarbon based organic solvent with the number of carbon being 5-8, 0.05-5wt.% surface active agent, 0.5-2.0wt.% water-soluble resin binder, 5-80wt.% metal powder with the average grain size being 0.5-500μm. 0.1-15wt.% plasticizer formed of one or two types of polyatomic alcohol, fat and oil, ether and ester, as required, and water are incorporated to prepare foaming metal slurry. The slurry is applied to the surface of a plate building base material 2 to form a slurry compact. The slurry compact is dried and foamed to form a porous compact layer. In addition, the porous compact layer is sintered to form a porous metal layer 3 and then a holed metal sintered body with a number of inside fine pores smaller than pores inside the skeleton portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall building material having added value such as heat insulation, antibacterial, antifungal, and electromagnetic wave shield, and a method for producing the same.

[0002]

2. Description of the Related Art As a building material attached to a wall, a floor, a ceiling or the like and used for a specific purpose, for example, a material having functions of heat insulation, antibacterial and antifungal may be required. As the heat insulating material, polymer materials such as urethane and inorganic materials such as gypsum are mainly used, and antibacterial and antifungal wall materials are polymer materials containing organic chemicals and antibacterial metal-supported zeolite. Is used. Further, for electromagnetic wave shielding of a room or the like, electromagnetic waves are shielded by stretching a metal foil or a metallic net shielding material so as to cover the room.

Most of the building materials described above are effective only for a single purpose, and conventionally, in order to produce a building material having a plurality of effects, it was necessary to bond the respective members to form a multilayer structure.

[0004]

However, in the above-mentioned laminated building material for walls having a laminated structure (hereinafter referred to as a laminated building material), the thickness of the wall material increases, and it becomes complicated and expensive. Challenges remain. Furthermore, when a shield material is required for electromagnetic shielding, even a small opening greatly affects the shield performance, and therefore it is necessary to stop the seam of the stretched shield material. However, in laminated building materials, it is difficult to join metal foils and nets laminated inside, and therefore wall materials that have other specific effects after the room is once covered with a shield material or before that. Therefore, the construction process was increased.
In addition, when the laminated building material is stretched with an adhesive such as glue, there is a problem that the glue or the like becomes a source for culturing bacteria.

The present invention has been made in view of the above-mentioned problems, and can be formed thin, has a simple structure and can be manufactured at low cost, and is an excellent electromagnetic wave shield in a simple construction process,
It is an object of the present invention to provide a building material for walls which has heat insulating properties, antibacterial properties and antifungal effects, and a method for producing the same.

[0006]

Means for Solving the Problems The present inventors have conducted research on a porous metal sintered body having a novel structure which has not been known so far, and the following research results have been obtained. Generally, when a surfactant and a water-insoluble organic solvent are added to water and mixed, colloidal droplets called fine micelles and sized micelles containing the water-insoluble organic solvent are formed by the surfactant, This becomes evenly dispersed and distributed in water, but in addition to the surfactant and the non-water-soluble organic solvent, the addition of metal powder and mixing also form the micelles, which is in water together with the metal powder. The mixture is uniformly distributed. In this case, the water-insoluble organic solvent has 5 to 5 carbon atoms.
Using the water-insoluble hydrocarbon organic solvent of No. 8, a molded body of a predetermined shape is molded from the mixture by a known method such as a doctor blade method or a slip casting method, and the molded body is heated at a temperature of 5 ° C. or higher. When kept at, the water-insoluble hydrocarbon-based organic solvent having 5 to 8 carbon atoms has a vapor pressure larger than that of water, and this vaporizes and becomes a gas to evaporate from the molded body. A large number of fine and sized bubbles are generated to form a porous molded body. Further, when a water-soluble resin is added to the mixture as a binder, the porous molded body has a strength capable of being handled, and at least one kind of polyhydric alcohol, oil and fat, ether and ester is added to the mixture. When added, the porous molded body becomes plastic. When the porous compact in such a state is sintered, a porous metal body composed of a skeleton portion (skeleton) covering the pores is obtained, and the skeleton portion has internal fine pores having a diameter smaller than the pores therein. The research result was obtained that it was formed of a large number of porous metal sintered bodies.

In order to solve the above problems, the present invention adopts the following configuration based on the above research results. That is, in the building material for walls according to claim 1, a plate-shaped building base material, and a foam metal slurry is applied to the surface of the building base material,
And a porous metal body layer formed by sintering, wherein the porous metal body layer has a skeleton portion covering a large number of pores, the porous metal body layer including a large number of internal fine pores having a diameter smaller than the pores. The technique formed by the union is adopted. In this wall building material, since the pores and the fine internal pores are included in the porous metal body layer in a large number, a highly efficient heat insulating effect is obtained, and the skeleton portion is a porous metal sintered body, which is high. It also has an electromagnetic wave shielding effect. When this building material for walls is stretched in a room or the like, by arranging the building base materials adjacent to each other, the porous metal body layer formed on the surface of the building base materials is also arranged continuously. become. In addition, since the porous metal body layer is formed by directly applying and sintering it on the surface of the building base material without using an adhesive such as glue, bacteria are not cultured. Further, the strength required as a building material is secured by the building base material.

According to a second aspect of the present invention, there is provided a wall building material according to the first aspect, wherein the perforated metal sintered body forming the skeleton portion contains at least one of silver and copper. Adopted. In this wall building material, the perforated metal sintered body forming the skeleton portion contains at least one of silver and copper, so that the generation of bacteria is suppressed by the highly antibacterial metal silver and copper.

According to the third aspect of the present invention, in the wall construction material according to the first or second aspect, a technique in which a chemical is contained in the pores and the internal fine pores is adopted. In this wall building material, the effect of the drug is further added by including the drug for antibacterial and antifungal and other drugs in the pores and the internal fine pores.

In the method of manufacturing a building material for walls according to claim 4,
A slurry coating step of applying a foam metal slurry to the surface of a plate-shaped architectural substrate to form a slurry molded body, and after the slurry coating step, the slurry molded body is dried and foamed to cover the skeleton portion. And a slurry drying step of forming a porous molded body layer having a large number of pores,
Porous molding in which the porous molded body layer is sintered to form a porous metal body layer, and the skeleton part is a porous metal sintered body including a large number of internal fine pores having a diameter smaller than the pores therein. A technique including a body layer sintering step is adopted.
In this wall building material manufacturing method, the surface of the building base material is directly applied to the surface of the building base material without using an adhesive such as glue by applying the foam metal slurry directly to the surface of the building base material and drying and sintering the slurry. A porous metal body layer is formed.

In the method for manufacturing a wall building material according to claim 5,
The method for manufacturing a wall building material according to claim 4, wherein the foamed metal slurry is, by weight%, a water-insoluble hydrocarbon organic solvent having 5 to 8 carbon atoms: 0.05 to 10%, and a surfactant:
0.05-5%, water-soluble resin binder: 0.5-20%,
Average particle size: 0.5 to 500 μm metal powder: 5 to 80%,
As required, a mixture having a compounding composition of 0.1 to 15% of a plasticizer consisting of one or more of polyhydric alcohols, fats and oils, ethers, and esters: water: the rest is prepared. Technology is adopted. In this method for manufacturing a wall building material, since the foamed metal slurry is composed of the above-described mixed composition, it becomes possible to form a slurry compact under normal temperature and normal pressure, and high porosity having fine and sizing pores. A porous metal body layer is formed. Further, by mixing the plasticizer, even if a porous metal body layer is formed on the surface of a building base material that is easily deformed, the porous metal body layer has a certain degree of plasticity, so peeling, cracking, etc. Hard to happen.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. In these figures, reference numeral 1 is a wall building material, 2 is a building base material, and 3 is a porous metal layer.

As shown in FIG. 1, the building material 1 for walls includes a plate-shaped construction base material 2 such as a ceramic board or a gypsum board, and silver and copper formed directly on the surface of the construction base material 2. And a porous metal layer 3. The porous metal body layer 3 is
As shown in FIG. 2, a porous metal sintered body having a large number of pores A covered by the skeleton portion 3a, and the skeleton portion 3a including a large number of internal fine pores a having a diameter smaller than the pores A therein. It is said that.

In the wall building material 1 described above, since a large number of pores A and internal fine pores a are contained inside the porous metal layer 3, a highly efficient heat insulating effect is obtained, and the skeleton portion 3a is a perforated metal. Since it is a sintered body, a high electromagnetic wave shielding effect can be obtained. And building material for walls 1
Even if they are stretched in a room or the like, they can be easily connected to each other by arranging them adjacent to each other, and a room having a high electromagnetic wave shielding effect can be formed by a simple construction process. can do. In addition, since the porous metal body layer 3 is directly formed on the surface of the building base material 2 without using an adhesive such as glue, bacteria are not cultured.

Next, an example of an apparatus for manufacturing the wall building material 1 according to the present invention will be described with reference to FIG. In these drawings, reference numeral 10 is a wall building material manufacturing apparatus, 11 is a conveyor belt conveyor, 12 is a foam metal slurry storage tank, and 13 is a drafter.

The building material manufacturing apparatus 10 for walls uses a doctor blade method, and is equipped with a conveyor belt conveyor 11 on which the building base material 2 is placed and conveyed in a fixed direction, and the conveyor belt conveyor 11 of the conveyor belt conveyor 11. A foam metal slurry storage tank 12 for applying the foam metal slurry S arranged and stored above to the surface of the building substrate 2, and a foam metal slurry storage tank 12
And a plurality of drafters 13 for drying the foamed metal slurry S.

The foamed metal slurry storage tank 12 is provided with a discharge port 12a for the foamed metal slurry S on the downstream side of its lower end, and a doctor blade section 12b on the upper side thereof. Further, on the side surface of the doctor blade portion 12b, a cutter 12 that cuts the discharged metal foam slurry S into a predetermined length according to the size of the building base material 2 is cut.
c is attached so that it can move up and down. The drafter 13 includes a fan 13a that blows high-temperature air sent from an oven (not shown) connected to the upper part of the draft metal 13 onto the applied foam metal slurry S.

Next, an example of one step of the method for producing the wall building material 1 according to the present invention by the above wall building material manufacturing apparatus 10 will be described with reference to FIGS. 2 to 4.

[Slurry coating step] First, in the foam metal slurry storage tank 12, a water-insoluble hydrocarbon-based organic solvent having 5 to 8 carbon atoms in weight% of 0.05 to 10% and a surfactant: 0.05-5%, water-soluble resin binder: 0.5-20
%, Average particle size: 0.5 to 500 μm metal powder: 5 to 80
%, If necessary, polyhydric alcohol, fats, ethers,
A foamed metal slurry S, which is a mixture having a blending composition of 0.1 to 15% of a plasticizer consisting of one or two or more of esters and water: balance, is stored.

The foamed metal slurry S is shown in FIG.
As shown in, a surfactant forms fine colloidal droplets called a micelle 15a, which are finely sized and contain a water-insoluble organic solvent, and are dispersed uniformly in water. In addition to the surfactant and the water-insoluble organic solvent, the metal powder 15b is further added and mixed to form the micelle 15a, which is uniformly dispersed in water together with the metal powder 15b. . The metal powder 15b contains metal powder made of silver, copper, or an alloy thereof.

The conveyor belt conveyer 11 is driven to convey the building base materials 2 placed side by side in an adjacent state to the storage metal foam slurry storage tank 12 side. When the building base material 2 is transferred to the lower part of the foam metal slurry storage tank 12, the cutter 12c is moved upward and the outlet 12
a is opened and the foam metal slurry S is discharged from the outlet 12a.
Is discharged and directly applied onto the surface of the building base material 2.

At this time, the foamed metal slurry S is formed into a certain thickness by the doctor blade portion 12b.
When the downstream end of the building base material 2 is located at the outlet 12a,
The discharge and application of the foam metal slurry S is stopped by moving the cutter 12c downward. As a result, the slurry compact 15 is formed on the surface of the building substrate 2 as shown in FIG.

[Slurry Drying Step] After that, the slurry molded body 15 is transferred to the draft base 1 by the conveyance of the building base material 2.
While being transferred below 3, the drafter 13 performs a drying process. At this time, as shown in FIG. 4B, when the slurry molded body 15 is held at 5 ° C. or higher and dried, the water-insoluble hydrocarbon organic solvent having 5 to 8 carbon atoms is larger than water. Since it has a vapor pressure, it is vaporized and becomes a gas to evaporate from the slurry compact 15. After that, degreasing is further performed in a high temperature state. Therefore, a large number of fine and sized bubbles are generated in the slurry molded body 15 to form a porous molded body, and after drying, there are many pores A covered by the skeleton portion 3a. The porous compact layer 16 is formed.

[Porous Molded Body Layer Sintering Step] The building base material 2 having this porous molded body layer 16 is placed in a sintering furnace (not shown) and subjected to a sintering treatment. At this time, as shown in (c) of FIG. 4 and FIG. 2, a porous metal body layer 3 composed of a skeleton portion 3a covering the pores A is obtained, and the skeleton portion 3a has the pores A inside thereof. The wall building material 1 is manufactured, which is a perforated metal sintered body including a large number of small internal fine pores a.

An embodiment in which the wall building material 1 thus manufactured is stretched on the ceiling and the wall of the room will be described with reference to FIG.

On the ceiling portion 20 in the room, a plurality of field edge receiving bars 21 are laid between the wall portions 22, and a hanger 24 attached to one end portion of the hanging bolts 23 by a plurality of hanging bolts 23. It is hung horizontally through. The other ends of the hanging bolts 23 are fixed to concrete or steel frame provided on the ceiling 20. Below the field edge receiving bar 21, a plurality of field edge bars 26 are arranged and fixed at regular intervals in a direction orthogonal to the length direction of the field edge receiving bar 21.

A plurality of wall building materials 1 are fixed and stretched on the field edge bar 26 with nails or the like below the field edge bar 26. These building materials 1 for walls are disposed adjacent to the entire surface of the ceiling portion 20 with their side portions in contact with each other. In addition, a plurality of building materials 1 for walls are fixed to the wall portion 22 with nails and stretched on the wall portion 22 as well, and like the ceiling portion 20, the respective side portions are brought into contact with each other to cover the entire surface of the wall portion 22. Adjacent to each other. A decorative board 27 is stretched with nails or the like on the surfaces of the building material 1 for walls of the ceiling portion 20 and the wall portion 22.

In the room in which the wall building material 1 is stretched as described above, a high heat insulating effect is obtained by the pores A and the internal fine pores a contained in the porous metal layer 3, and the room temperature is kept constant. It is easy to maintain, and since the building materials for walls 1 are adjacent to each other and the porous metal body layers 3 are in close contact with each other, a high electromagnetic wave shielding effect is obtained, which is suitable for use in highly accurate electric devices and the like. You can get the environment.

Next, a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. In these figures,
Reference numeral 31 is a building material for walls, 32 is a building base material, and 33 is a porous metal body layer.

As shown in FIG. 6, the building material 3 for walls of the second embodiment
1 is a building base material 32, similar to the wall building material 1 of the first embodiment.
After the porous metal layer 33 is formed directly on the surface of, the organic metal drug, the antibacterial metal-supporting zeolite, the metal salt solution, and the other drug Y are dipped in at least one of the organic drug, dried by As shown in FIG. 7, the drug Y is formed inside the pores A and the internal fine pores a. The dipping step may be carried out under reduced pressure in order to improve the dipping efficiency of the drug Y. At this time, the drug Y can be sufficiently contained in the inside of the internal fine pores a as compared with the case where it is simply immersed. The building material 31 for a wall configured in this way has the effects of the fungicide and the like due to the drug Y added to the effects of the building material 1 for a wall of the first embodiment.

In the metal foam slurry according to the present invention,
The reason why the composition is limited as described above will be explained.

(A) Water-insoluble hydrocarbon organic solvent having 5 to 8 carbon atoms (hereinafter, simply referred to as organic solvent) In the above organic solvent, micelles are formed by the action of a surfactant, and 5 ° C. or more after molding. Evaporate by keeping the temperature of
It has the function of forming fine and sized bubbles in the slurry compact, but if the proportion is less than 0.05%, the generation of bubbles is insufficient, and the desired porous metal sintering with high porosity is obtained. The body cannot be manufactured, while the ratio exceeds 10%. The size of the micelle increases, and the bubbles formed in the slurry compact also increase in size, which causes the strength of the slurry compact and porous metal sintered body to drop sharply. Was set to 0.05 to 10%, preferably 0.5 to 5%. Further, the carbon number of the organic solvent is set to 5 to 8 because the value of 4 or less and the liquid one does not exist under normal temperature and pressure (all are gases), while the value is 9
This is based on the reason that the vapor pressure becomes small and it becomes extremely difficult to form bubbles in the above cases. further,
As the organic solvent, it is preferable to use neopentane, hexane, isohexane, heptane, isoheptane, benzene, octane, and toluene.

(B) Surfactant The surfactant has a function of forming micelles encapsulating an organic solvent as described above, but if the ratio is less than 0.05%, the formation of the micelle becomes unstable, Due to this, it is not possible to form finely sized micelles, and on the other hand, even if the proportion exceeds 5%, further improvement effect does not appear due to the above action, so the proportion is 0.05 to 5%. , Preferably 0.5 to 3%. As the surfactant, generally, a detergent may be used, and a commercially available kitchen neutral synthetic detergent (for example, a 28% mixed aqueous solution of alkyl glucoside and polyoxyethylene alkyl ether) is sufficient.

(C) Water-Soluble Resin Binder The water-soluble resin binder has the function of improving the strength of the porous body and allowing its handling, but its proportion is less than 0.5%. However, the desired strength-improving effect cannot be obtained. On the other hand, if the ratio exceeds 20%, it becomes difficult to form a desired shape.
%, Preferably 2 to 10%. Further, as the water-soluble resin, it is desirable to use methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose ammonium, ethyl cellulose, and polyvinyl alcohol.

(D) Metal powder Since the metal powder constitutes a perforated metal sintered body after sintering, a metal material applied to a metal porous body including a conventional perforated metal sintered body. However, if the average particle size is less than 0.5 μm, it becomes difficult to increase the porosity of the sintered body, while if the average particle size exceeds 500 μm, the dispersibility in the mixed raw material decreases. However, since it becomes impossible to manufacture a homogeneous sintered body, the average particle size is set to 0.5 to 500 μm, preferably 5 to 100 μm. The ratio of the metal powder is preferably 5 to 80%, which is 5%.
If it is less than%, the strength of the sintered body will decrease sharply,
On the other hand, it is based on the reason that it is difficult to increase the porosity when the ratio exceeds 80%.
% Ratio is desirable.

(E) Plasticizer The polyhydric alcohol, fats and oils, ethers, and esters added as plasticizers have the function of imparting plasticity to the slurry molded body, so they are added as necessary. If the proportion is less than 0.1%, the desired effect cannot be obtained, while if the proportion exceeds 15%, the strength of the porous molded body will be rapidly reduced. It is set to 1 to 15%, preferably 2 to 10%. Further, as the polyhydric alcohol, ethylene glycol,
Polyethylene glycol and glycerin, sardine oil, rapeseed oil, and olive oil as the above-mentioned oil and fat, petroleum ether as the above ether, and diN-octyl phthalate, sorbitan monooleate, sorbitan trioleate, sorbitan palmitate, and sorbitan stearate as the ester. Each use is preferred.

Further, when a combustible material is added to the mixture,
Combustion disappears during degreasing and sintering of the porous molded body,
The formation of pores can be further promoted. Therefore, the combustible material is not particularly limited in terms of material as long as it burns and disappears at a temperature of 300 ° C. or higher and at a temperature of sintering temperature of the metal powder or lower. For example, 0.1 to 200 μm, preferably 20 to 10
Those having an average particle size of 0 μm are preferable, and if they are fibrous, the length thereof is 200 μm or less, preferably 30 to 12
It is preferably 0 μm. On the other hand, if the proportion is less than 0.1%, the desired effect of promoting pore formation cannot be obtained. On the other hand, if the proportion exceeds 40%, unevenness is likely to occur on the surface of the porous molded article during drying, Since the surface property is deteriorated, the ratio is set to 0.1 to 40%, preferably 5 to 20%. Furthermore, as combustible materials, pulp,
It is preferable to use cotton, lint, corn starch, carboxymethyl cellulose, water-insoluble cellulose resin, polyvinyl butyral resin, polyvinyl resin, acrylic resin, polyethylene resin and the like.

In each of the above-mentioned embodiments, the flat plate-shaped building base materials 2 and 32 are used, but other plate-shaped building base materials having a curved surface or an uneven surface may be used as long as they are plate-shaped. But it doesn't matter. Further, if a foamed metal slurry mixed with the plasticizer is used, the formed porous metal layer has plasticity, so that it may be applied to a building material that is easily deformed.

[0039]

EXAMPLES Next, the building material for walls according to the present invention will be specifically described by way of examples. First, various metal powders having the average particle diameters and compositions shown in Tables 1 and 2 as metal powders, neopentane (hereinafter referred to as A-1), hexane (also referred to as A-2, the same below) as organic solvents, Isohexane (A-3), heptane (A-4), isoheptane (A-
5), benzene (A-6), octane (A-7), and toluene (A-8), the above-mentioned commercially available neutral detergent for kitchen as a surfactant, and methylcellulose (hereinafter referred to as a water-soluble resin binder). , B-1), hydroxypropylmethylcellulose (also referred to as B-2, the same applies hereinafter), hydroxyethylmethylcellulose (B-3),
Carboxymethyl cellulose ammonium (B-4),
Ethyl cellulose (B-5), polyvinyl alcohol (B-6), as a plasticizer, polyethylene glycol (hereinafter referred to as C-1), olive oil (also C-2).
The same shall apply hereinafter), petroleum ether (C-3), diN-butyl phthalate (C-4), and sorbitan monooleate (C-5) are prepared respectively, and these are formulated as shown in Tables 1 and 2. Was mixed with water and mixed under normal conditions to prepare mixed raw materials A to P as foam metal slurries.

[Table 1]

[Table 2]

Then, these various mixed raw materials are applied to the surface of the building base material by the above-mentioned wall building material manufacturing apparatus 10 or the like to form a slurry molded body. Under the conditions shown in Fig. 4, foaming (forming a porous molded body), degreasing and sintering were performed to manufacture wall building materials having the porous metal bodies 1 to 16 formed on their surfaces.

[Table 3]

[Table 4]

Next, with respect to the wall building material on which these porous metal bodies 1 to 16 were formed, the porosity of the perforated metal sintered body was measured, and arbitrary 10 points in the longitudinal section were magnified 200 times with a metallurgical microscope. Observing at a magnification, the maximum pore diameter and the minimum pore diameter of the pores at each observation point were measured, and the average value thereof was obtained. Table 5 shows the results of these measurements.

[Table 5]

With respect to the building material for walls on which these porous metal bodies 1 to 16 were formed, the total porosity of the porous metal body was measured by using an image analysis device, and the porous metal was measured by the BET method. The total specific surface area of the body was measured, and the porosity of internal fine pores in the skeleton part of the porous metal sintered body constituting the porous metal body was also measured. The results of these measurements are shown in Table 6 as the average values of 30 measurement points.

[Table 6]

[0043]

The present invention has the following effects. (1) According to the wall building material of the present invention, a large number of pores and internal fine pores are included inside the porous metal body layer, and the skeleton portion is a perforated metal sintered body, so that it is highly efficient. Since it has a heat insulating effect and a high electromagnetic wave shielding effect at the same time, these plural effects can be obtained at a low cost with a simple and thin structure. When the building material for walls of the present invention is stretched in a room or the like, by placing the building base materials adjacent to each other, the porous metal body layer formed on the surface thereof is also placed continuously. Therefore, an excellent electromagnetic wave shielding effect can be obtained by a simple construction process. Furthermore, since the porous metal body layer is formed directly on the surface of the building substrate without using an adhesive such as glue, the bacteria are not cultured and the hygiene is further improved. Further, the strength required as a building material is secured by the building base material, and can be handled in the same manner as ordinary building materials. (2) Further, by containing at least one of silver and copper in the perforated metal sintered body forming the skeleton portion, the generation of bacteria can be suppressed and the antibacterial property can be further improved. (3) Further, by including a drug for antibacterial or antifungal or other drug in the pores and the internal fine pores, the effect of the drug is further added, and various effects can be obtained. (4) According to the method for manufacturing a building material for walls according to the present invention, the foam metal slurry is directly applied to the surface of the building base material and dried.
By sintering, directly without using adhesive such as glue,
Since a porous metal body layer is formed on the surface of the building base material,
It improves hygiene and can be applied to various plate-shaped building substrates and large-area building substrates. (5) Furthermore, by forming the foamed metal slurry with the above-mentioned predetermined mixed composition, it becomes possible to form a slurry compact under normal temperature and normal pressure, and at the same time, it has a high porosity having fine and sizing pores. Since the porous metal body layer is formed, a high-quality wall building material having an excellent heat insulating effect and the like can be easily manufactured by a simple process. Further, by mixing the plasticizer, it can be applied to a building base material which is easily deformed, that is, a building base material having high plasticity, elasticity and thermal expansion property, and produces various building materials for walls. It becomes possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first mode of a wall building material according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a porous metal body layer in FIG.

FIG. 3 is a schematic cross-sectional view for explaining an example of an apparatus for manufacturing a building material for walls according to the present invention.

FIG. 4 is a conceptual diagram for explaining one process example of a method for manufacturing a wall building material according to the present invention.

FIG. 5 is a cross-sectional view showing a state in which a first form of a wall building material according to the present invention is arranged indoors.

FIG. 6 is a cross-sectional view showing a second mode of the building material for walls according to the present invention.

7 is an enlarged cross-sectional view of a porous metal body layer in FIG.

[Explanation of symbols]

 1,31 Building material for wall 2,32 Base material for building 3,33 Porous metal body layer 3a Skeleton part 15 Slurry molded body 15a Micelle 15b Metal powder 16 Porous molded body layer A Pore a Internal fine pore S Foam metal slurry Y Drug

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Claims (5)

[Claims] 1. A porous metal body layer comprising: a plate-shaped construction base material; and a porous metal body layer formed by coating and sintering a foam metal slurry on the surface of the construction base material. Is a building material for walls, characterized in that the skeleton portion covering a large number of pores is formed of a perforated metal sintered body that internally includes a large number of internal fine pores having a diameter smaller than the pores. 2. The wall building material according to claim 1, wherein the perforated metal sintered body forming the skeleton portion contains at least one of silver and copper. 3. The wall building material according to claim 1, wherein a chemical is contained in the pores and the internal fine pores. 4. A slurry applying step of applying a foamed metal slurry to the surface of a plate-shaped building base material to form a slurry formed article, and a step of drying and foaming the slurry formed article after the slurry applying step. A slurry drying step of forming a porous molded body layer having a large number of pores covered with the skeleton portion, and sintering the porous molded body layer to form a porous metal body layer, and a skeleton portion, A method for producing a wall building material, comprising a step of sintering a porous molded body layer into a porous metal sintered body having a large number of internal fine pores having a diameter smaller than the pores therein. 5. The foamed metal slurry, in wt%, is a water-insoluble hydrocarbon organic solvent having 5 to 8 carbon atoms: 0.05
-10%, surfactant: 0.05-5%, water-soluble resin binder: 0.5-20%, average particle size: 0.5-500 μm metal powder: 5-80%, if necessary A plasticizer consisting of one or more of polyhydric alcohols, oils and fats, ethers, and esters: 0.1 to 15%, water: balance, and a mixture having a blending composition of: The method for manufacturing a building material for walls according to claim 4.