JP4822075B2 - Dyeing method of lightweight cellular concrete board for building wall material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for dyeing a lightweight cellular concrete board for a wall material of a structure having excellent effects such that dyeing is performed securely at a low cost, a long term dyeing durability is observed, the surface of a lightweight cellular concrete board for a wall material of structure is strengthened, the durability of a board itself is improved, and the designability of a lightweight cellular concrete board for a wall material of the structure is remarkably improved. <P>SOLUTION: The method for dyeing a lightweight cellular concrete for a wall material of a structure is characterized by immersing a lightweight cellular concrete for a wall material of structure in a dye type colorant stored in a dyeing operation case, subsequently sealing up the dyeing operation case, and releasing the sealing after a specific time passes. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

The present invention relates to a method for dyeing lightweight cellular concrete boards for construction wall materials, such as lightweight cellular concrete (Autoclaved Light-weight Concrete) boards, which have been used for many times as outer wall materials for houses, for example.

Lightweight cellular concrete is written in English as Autoclaved Light weight Concrete (hereinafter referred to as ALC) and has the meaning of “lightweight cellular concrete cured by high-temperature and high-pressure steam”.
Originally, it has been made by reducing the weight of highly durable concrete, and is said to be an excellent material with particularly excellent fireproof performance and moisture absorption and desorption properties next to the soil wall. In recent years, it has been used mainly as an exterior wall material for houses. ing.

  Here, for example, there are ceramic siding, mortar, ALC, metal siding and the like as exterior wall finishing materials for houses. Currently, ceramic siding is recognized for its characteristics and has grown to about 70% of the housing exterior share.

Ceramic siding is made by molding cement material and fiber material as the main material, curing and curing.
Ceramic siding is used for the exterior of buildings such as houses, and the quality is produced in accordance with JIS A 5422.
In terms of composition, “wood fiber reinforced cement board system” using wood fiber and wood fragments as reinforcement, “fiber reinforced cement board system” using pulp and synthetic fiber as reinforcement, and “fiber reinforced cement / silicic acid”. There are three types of "calcium plate system".

Next, ALC will be described. ALC, which requires painting, is expensive because it is difficult to produce detailed design expressions and colors, and it takes time and effort to paint. These issues are a factor in the decline in ALC demand, for example, in the housing exterior share.
However, ALC is superior in durability, heat insulation and moisture permeability, and is a higher performance material than ceramic siding.
Therefore, if it becomes possible to improve the design and improve the cost, it will be possible to provide an outer wall material that takes advantage of the excellent material properties of ALC.

However, there are two methods for coloring ALC: coloring in the manufacturing process of the factory and painting after installation at the construction site.
In the former, ALC production itself requires large-scale equipment, and since ALC is manufactured as a panel as a panel, wearing various colors is not practical from the viewpoint of cost and technology (colored ALC Although there is a production record, it is rarely used).
The latter is a painting method that uses paints that are commonly used at present, and since it is a paint, there are many types of colors, but there are many steps (8 steps) from the installation of ALC to the final overcoating, It requires painting techniques and time by craftsmen.

Therefore, the present invention aims to improve workability and designability by coloring the ALC coloring method with no previous experience, that is, by painting instead of painting.
Japanese Unexamined Patent Publication No. 2000-1385

  Thus, the present invention was devised to address the above-described conventional problems, and for the dyeing of lightweight cellular concrete boards for building wall materials, the cost can be reduced and dyeing can be performed reliably, and a long dyeing period can be achieved. Durability is recognized, and furthermore, the surface of the lightweight cellular concrete board for building wall material can be strengthened by the dyeing method, and the durability of the board itself can be improved. Furthermore, the lightweight cellular concrete board for building wall material It aims at providing the dyeing | staining method of the lightweight cellular concrete board for structure wall materials which show | plays the outstanding effect that the designability of can also be improved significantly.

If it is a method for dyeing lightweight cellular concrete boards for building walls according to the present invention,
Mixing a dye-based colorant, a fixing agent, and a diluent for diluting the dye-based colorant to produce a mixture,
The mixing ratio of the fixing agent and the diluent,
It is a lightweight cellular concrete board for building walls used in places where wall strength is required and coloring penetration depth is required, or building walls used in places where wall strength and coloring penetration depth are relatively not required Depending on whether it is a lightweight cellular concrete board for wood,
By determining the mixing ratio, the dyeing method can reduce the product cost,
The liquid mixture is stored in a dyeing work case, and a lightweight cellular concrete board for a building wall material is immersed in the liquid mixture,
Next, the inside of the dyeing work case is sealed and decompressed, about 1 hour has passed in the vacuum state, the sealing is released after about 1 hour has passed , and the normal atmospheric pressure state is restored over several minutes,
Dyeing the lightweight cellular concrete board for building wall material,
It is characterized by
Or
Mixing a dye-based colorant, a fixing agent, and a volatile diluent that dilutes the dye-based colorant to produce a mixture,
The mixing ratio of the fixing agent and the diluent,
It is a lightweight cellular concrete board for building walls used in places where wall strength is required and coloring penetration depth is required, or building walls used in places where wall strength and coloring penetration depth are relatively not required Depending on whether it is a lightweight cellular concrete board for wood,
By determining the mixing ratio, the dyeing method can reduce the product cost,
The liquid mixture is stored in a dyeing work case, and a lightweight cellular concrete board for a building wall material is immersed in the liquid mixture,
Next, the inside of the dyeing work case is sealed and decompressed, about 1 hour has passed in the vacuum state, the sealing is released after about 1 hour has passed , and the normal atmospheric pressure state is restored over several minutes,
Dyeing the lightweight cellular concrete board for building wall material,
It is characterized by
Or
The diluent is a thinner.
It is characterized by the above.

If it is a method for dyeing a lightweight cellular concrete board for a construction wall material of the present invention, the cost of coloring can be reduced, and it can be reliably colored (dyed), and a long-term dyeing period durability is recognized, By this dyeing method, the surface portion of the lightweight cellular concrete board for building wall material can be strengthened, and as a result, the durability of the lightweight cellular concrete board for building wall material itself can be improved, and further the building wall material It has an excellent effect that the design properties of the lightweight cellular concrete board can be greatly improved.

  First of all, cellular concrete was born around 1820, and a full-scale lightweight cellular concrete (ALC) cured by high-temperature and high-pressure steam in the current autoclave was invented by a German researcher in 1880, and in 1914 It is said that it was put to practical use in Sweden.

  A Japanese manufacturer introduced it from the former Soviet Union in 1963 and started manufacturing ALC. In 1967, the company shifted to the production of Hebel (75 mm or more) technology introduced from Hebel AG in West Germany. In 1968, a so-called aerated concrete board with a thickness of 50 mm was developed with reinforcing material made from reinforcing steel bars to metal laths. A 37mm-thick power board developed based on this has been on sale since 1980. In 1997, the quality of JIS A 5416 lightweight cellular concrete panel (ALC panel) was specified.

  Here, the characteristics of ALC will be described. First, it has a “closed cell”.

“Independent bubbles” are gas bubbles generated by a chemical reaction between an alkali component and aluminum powder, and are the origin of light weight, heat insulation, humidity control, and sound insulation.
Next, it has a "pore". The “closed cells” are connected by pores having a diameter of 0.05 to 0.1 μm. In the event of a fire, the “pores” serve as escape routes for heated air, preventing explosions and exhibiting high fire resistance.
Furthermore, it has a “tobermorite crystal”.

"Tobermorite crystal" refers to crystals that are abundantly formed on the surface of "bubbles" and "pores", and is a materially stable plate-like crystal structure that has excellent strength and does not undergo chemical changes with heat or water. It is. The “tobermorite crystal” realizes the strength, fire resistance, water resistance and durability of the lightweight cellular concrete board for building wall materials. As a feature of "tobermorite crystal",
1. It has strong water retention and bad odor adsorption power due to its porous structure.
2. It has the ability to retain ions called positive ions such as magnesium, potassium, sodium and ammonia on the crystal surface (ion exchange capacity).
3. The specific surface area is very large, up to 50m ² per gram. Etc. are mentioned.

  Next, the construction process including general ALC coating will be described.

The construction process of ALC can be roughly divided into “ALC installation”, “Repair screw holes”, “Curing”, “Sealing”, “Curing”, “Undercoating”, “Incoating” And “overcoating”.
In the case of ceramic siding, there are four steps: "Installing ceramic siding", "Repairing screws", "Curing", and "Sealing", including the general ALC coating. It is said that half of the process is sufficient.

Such a difference in the process, particularly in ALC, has the above-mentioned painting process, which has been one of the causes of the high cost of using lightweight cellular concrete boards for building walls.
Hereinafter, the present invention will be described based on the best mode for carrying out the invention shown in the drawings. First, a method for dyeing lightweight cellular concrete boards for building wall materials will be described with reference to FIG.

A stock solution 1 of a dye-based colorant is stored in a dyeing work case 2 having a substantially square shape, for example. Examples of components of the dye-based colorant stock solution 1 include ethyl acetate, butyl acetate, isobutyl acetate, methyl ethyl ketone, and methyl isobutyl ketone.
Here, the shape of the dyeing work case 2 is not limited at all. However, since the lightweight cellular concrete board 3 for a building wall material is generally formed in a substantially rectangular shape, the dyeing work case 2 is also usually the same. It is said that the shape.

Subsequently, the lightweight cellular concrete board 3 for a building wall material is immersed in the stock solution 1 of the dye-based colorant stored. The state of the immersion is not limited at all, but it is necessary that at least one surface of the lightweight cellular concrete board 3 for a building wall material is immersed.
Then, after confirming that the entire lightweight cellular concrete board 3 for a building wall material or one side is immersed in some cases, the dyeing work case 2 is covered and the inside of the dyeing work case 2 is sealed.
And after setting it as a sealed state, it is made into a natural state as it is without pressure reduction or pressurization, and it waits for dyeing.

There is also a method of reducing the pressure in a sealed state.
The sealed state is left as it is, or the pressure is reduced as the sealed state to prevent volatilization of the stock solution 1 of the dye-based colorant.
In this state, it is immersed for about 1 to 3 days. Then, the whole surface of the lightweight cellular concrete board 3 for building walls is dyed cleanly.

Moreover, although it is the decompression method after making it into the said sealing state, you may use the vacuum pump 4 etc., for example, and you may depressurize the inside of the said dyeing | staining work case 2 until it becomes a vacuum state. By setting the vacuum state, it is possible to relatively shorten the working period of dyeing.
For example, it may be sufficient to leave the vacuum for about one hour after the vacuum. The time for the vacuum state may be about 1 hour.

For example, after allowing the inside of the dyeing work case 2 to remain in a vacuum state for about one hour, the vacuum state in the dyeing work case 2 is released and returned to a normal atmospheric pressure state over several minutes. In addition, the lightweight cellular concrete board 3 for structure wall materials is kept immersed in the stock solution 1 of the dye-type coloring agent stored.
Then, when the pressure is increased from the vacuum state to the atmospheric pressure in the state where the lightweight cellular concrete board 3 for the building wall material is immersed in the stock solution 1 of the dye-based colorant, for example, the structure is so constructed that the sponge absorbs water. The lightweight cellular concrete board 3 for wall material absorbs the stock solution 1 of the dye-based colorant.

This phenomenon is caused by the fact that the lightweight cellular concrete board 3 for building wall material has a large number of voids, and therefore a pressure difference (inside is low) is created between the inside and outside.
For example, in any color of the stock solution 1 of the blue, red, and yellow dye-based colorants, the coloration state by the above-described dyeing method is good, and the light-weight concrete board 3 for building wall material is shaved to confirm the state of dyeing inside. Even if it tried seeing, it was colored to the depth of 5-10 mm from the surface (refer FIG. 2). It was confirmed that the tobermorite crystals were colored while the tobermorite crystals were kept as they were.

By the way, although the stock solution 1 of the dye-based colorant used in the dye method described above is used as it is, it is uneconomical in terms of cost and practical to use the stock solution as it is without being diluted at all. is not.
Accordingly, it is preferable to dilute the dye-based colorant stock solution 1 with a diluent.
In addition, in order to harden the surface of the lightweight cellular concrete board 3 for building wall material and improve the surface strength as the wall surface material, it is also preferable to use a so-called surface fixing agent mixed with the dye-based colorant stock solution 1. Is.

Therefore, in the second embodiment of the present invention, the dye colorant stock solution 1, the fixing agent 5, and the first diluent 6 or the second diluent 7 are mixed with the dye colorant stock solution 1 at a predetermined ratio. The mixed solution was used.
Here, the fixing agent 5 is used when dyeing ordinary fiber materials such as those commonly used for dyeing fibers and agents for changing soluble dyes and mordants to insoluble and fixing them to fibers. For example, a material used for increasing the adhesive strength of the waterproof material to the substrate is not used. For example, a urethane resin primer is applicable.

The diluent is a liquid added to reduce the viscosity and resin content of the adhesive, and so-called solvents and water are often used.
Thus, a specific experiment was conducted to confirm the state.

(experimental method)
According to “Table 1 Colored liquid test conditions” shown in FIG. 3, a colored liquid composed of a mixed solution was prepared, and a so-called ALC specimen (100 mm × 100 mm) was immersed therein.
Next, based on the process of this invention, it colored in what is called a vacuum state, Then, it took out and aimed at the residual amount of the coloring liquid.
After the specimen was dried, it was measured how much the colored liquid had penetrated the specimen.

(Experimental results and discussion)
The relationship between the penetration amount and the penetration depth of the colorant under each mixing condition is shown in “Table 2 penetration amount and penetration depth of the coloring liquid” shown in FIG.

  Here, since the amount of the fixing agent 5 is large in the condition A shown in FIG.

  However, since the ALC surface of the specimen was hardened by the effect of the sticking agent 5, it was found that the hardness of the surface can be obtained by mixing the sticking agent 5.

Next, the deepest penetration depth was obtained under conditions B and E, and the average depth was obtained under conditions B, C, and D.
In other words, it was found that substantially the same penetration depth was obtained except for the condition A. Therefore, it can be seen that the amount of the sticking agent 5 mixed has a great influence on the penetration depth.
And it turned out that only the part of a part of closed cell is dyed deeply, and there exists a place where coloring liquid enters the lightweight foam concrete board 3 for structure wall materials easily. Such a phenomenon is considered to be caused by the presence of fine holes connecting the closed cells.

Next, the effect of the difference in diluent does not show a clear difference in the penetration depth, but it takes longer time when it hardens quickly after coloring (first diluent 6: diluent 1: thinner, for example). In some cases, it does not harden (second diluent 7: diluent 2: IPA, isopropyl alcohol, for example), and it can be understood that the fixing agent 5 and the diluent are compatible.
Accordingly, when the dye-based colorant stock solution 1, the fixing agent 5 and the first diluent 6 are mixed, they can quickly solidify after the coloring work, and the work efficiency can be greatly improved, thereby reducing the product cost. There is merit that can be provided.

In the case of the dye-based colorant stock solution 1 alone, the same color (darkness) was observed when the surface penetrated into the interior, but when the mixed solution was used, the surface was darker than the interior. It was.
That is, since a volatile diluent is used, the dye moves to the surface and is fixed in the process of evaporation. Therefore, it is preferable to use a volatile diluent as described above.

  From the above results, the surface strength increases if the amount of the fixing agent 5 is large, but the permeability is lost. Therefore, the so-called surface strength of the lightweight cellular concrete plate 3 for a building wall material and the internal ratio due to the mixing ratio of the fixing agent 5 and the diluent are eliminated. By analyzing the permeability relationship, each component can be dyed considering the components of the fixing agent and the diluent and the mixing ratio of the fixing agent and the diluent, respectively.

  That is, for example, depending on which part of the construction the lightweight cellular concrete board 3 for the building wall material is used, in other words, sufficient wall strength is required at a part that is relatively exposed to wind and snow, and a certain amount of colored penetration. Depending on whether it is the lightweight cellular concrete board 3 for a building wall material in a place where a depth is also required, or the lightweight cellular concrete board 3 for a building wall material used in a relatively unlikely place, the mixing ratio is It can be decided. And by this ratio determination, the cost reduction in a total surface can be achieved.

  In this way, the relationship between the so-called surface strength and penetration into the interior of the lightweight cellular concrete board 3 for building wall material is analyzed, so that the components of the fixing agent and the diluent and the mixing ratio of the fixing agent and the diluent, respectively. It is a very important element to consider and dye.

Furthermore, in order to expand the demand for lightweight cellular concrete boards (ALC) with excellent material properties such as functionality and durability, improvements in design and workability are also extremely necessary. For this purpose, as described above, it is preferable to apply a coloring method called dyeing instead of coloring by conventional painting.

It is explanatory drawing explaining the process of the dyeing | staining method of the lightweight cellular concrete board for structure wall materials by this invention. It is explanatory drawing explaining the lightweight cellular concrete board for structure wall materials dye | stained by this invention. It is a table | surface which shows the test conditions of a coloring liquid. It is a table | surface explaining the penetration amount and penetration depth of a coloring liquid.

DESCRIPTION OF SYMBOLS 1 Dye-type coloring agent 2 Dyeing work case 3 Light-weight foam concrete board for structure wall materials 4 Vacuum pump 5 Adhesive agent 6 1st diluent 7 2nd diluent

Claims (3)

It is a method for dyeing lightweight cellular concrete boards for building wall materials,
Mixing a dye-based colorant, a fixing agent, and a diluent for diluting the dye-based colorant to produce a mixture,
The mixing ratio of the fixing agent and the diluent,
It is a lightweight cellular concrete board for building walls used in places where wall strength is required and coloring penetration depth is required, or building walls used in places where wall strength and coloring penetration depth are relatively not required Depending on whether it is a lightweight cellular concrete board for wood,
By determining the mixing ratio, the dyeing method can reduce the product cost,
The liquid mixture is stored in a dyeing work case, and a lightweight cellular concrete board for a building wall material is immersed in the liquid mixture,
Next, the inside of the dyeing work case is sealed and decompressed, about 1 hour has passed in the vacuum state, the sealing is released after about 1 hour has passed , and the normal atmospheric pressure state is restored over several minutes,
Dyeing the lightweight cellular concrete board for building wall material,
A method for dyeing lightweight cellular concrete boards for construction wall materials.
It is a method for dyeing lightweight cellular concrete boards for building wall materials,
Mixing a dye-based colorant, a fixing agent, and a volatile diluent that dilutes the dye-based colorant to produce a mixture,
The mixing ratio of the fixing agent and the diluent,
It is a lightweight cellular concrete board for building walls used in places where wall strength is required and coloring penetration depth is required, or building walls used in places where wall strength and coloring penetration depth are relatively not required Depending on whether it is a lightweight cellular concrete board for wood,
By determining the mixing ratio, the dyeing method can reduce the product cost,
The liquid mixture is stored in a dyeing work case, and a lightweight cellular concrete board for a building wall material is immersed in the liquid mixture,
Next, the inside of the dyeing work case is sealed and decompressed, about 1 hour has passed in the vacuum state, the sealing is released after about 1 hour has passed , and the normal atmospheric pressure state is restored over several minutes,
Dyeing the lightweight cellular concrete board for building wall material,
A method for dyeing lightweight cellular concrete boards for construction wall materials.
The diluent is a thinner.
The method for dyeing a lightweight cellular concrete board for a building wall material according to claim 1 or 2, wherein:

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