JP2002047039A - Wall finishing material by troweling sandy wall surface having hygroscopic/moisture releasing capability - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wall finishing material having good troweling workability together with affording to the wall surface hygroscopic/moisture releasing capability by blending an inorganic porous powder with the wall finishing material for troweling. SOLUTION: The wall finishing material comprises 100 pts.wt. of inorganic granular aggregate having particle size in the range of 0.1 to 5 mm and 2 to 20 pts.wt. of light aggregate having particle size in the range of 0.2 to 7 mm provided that the maximum particle size is larger than the inorganic granular aggregate and providing hygroscopic/moisture releasing capability and elasticity, where on the surface of the inorganic granular aggregate and the light aggregate there is adhered an inorganic porous powder having particle size of 1000 μm or less, the total blended amount of which is in the range of 2 to 20 pts.wt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a troweled wall surface finishing material having a sand-wall-like wall surface and a method for producing the same, and in particular, to impart excellent moisture absorption / desorption performance to the wall surface by the action of inorganic porous powder. The present invention provides a novel wall finishing material that can be used and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, sand-wall-like wall finishing materials containing inorganic particulate aggregates such as silica sand and hydrated water having a particle size in the range of 0.1 to 5 mm have been known. In addition to pigment, talc such as talc is spread on the surface of the inorganic granular aggregate using a synthetic resin binder to improve workability in trowel coating such as troweling.

[0003] In recent years, attempts have been made to mix inorganic porous powders, such as diatomaceous earth, activated clay, zeolite, and sepiolite, having fine pores formed on the surface thereof into wall surface finishing materials. The wall surface finishing material blended with inorganic porous powders absorbs harmful substances such as the smell of tobacco and the burning gas of kerosene, and the indoor material is absorbed and released by the material itself. It has the function of adjusting humidity. However, inorganic porous powders such as diatomaceous earth have innumerable micropores formed on the surface, so that the coefficient of friction of the inorganic porous powder surface is large, and the inorganic porous powder is coated on a wall for troweling. When blended in a finishing material, the iron elongation of the iron becomes extremely poor, and the ironing workability is deteriorated. Therefore, the particle diameter of the inorganic porous powder used for the wall surface finishing material is set to be smaller than that of other aggregates so that the inorganic porous powder and the iron surface do not directly contact and deteriorate the workability of the iron coating. A smaller one is used (Japanese Patent Laid-Open No. 11-14090).
Reference).

[0004] However, if these inorganic porous powders are simply blended into a sand-wall-like wall surface finishing material, the inorganic porous powders are buried in the gaps between the inorganic granular aggregates and are not exposed on the surface of the wall.
The inorganic porous powder could not exhibit sufficient moisture absorption / release performance. When a large amount of the inorganic porous powder is blended, the amount of the inorganic porous powder exposed on the wall surface increases, and the moisture absorption / release performance can be improved. Clogged with high quality powder,
The appearance as a sand wall could not be revealed.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to impart sufficient moisture absorption / desorption performance to a finished surface by blending an inorganic porous powder with a sand-wall-like wall surface finishing material, An object of the present invention is to provide a sand-wall-like wall finishing material that does not lose its appearance.

[0006]

In view of such circumstances, the present inventors have repeated various tests, and as a result, by blending an inorganic particulate aggregate having an inorganic porous powder spread on its surface, It has achieved its intended purpose.

The specific composition of the wall surface finishing material is 100 parts by weight of an inorganic particulate aggregate having a particle size in the range of 0.1 to 5 mm, a maximum particle size larger than that of the inorganic granular aggregate and a particle size of A blend of 2 to 20 parts by weight of lightweight aggregate having moisture absorption / desorption performance and elasticity in the range of 0.2 to 7 mm, and inorganic porous powder is spread on the surface of inorganic granular aggregate and lightweight aggregate. The inorganic porous powder has a particle diameter of 1000 μm or less and a total amount of 2 to 2
0 parts by weight.

[0008] The wall finishing material for troweling of the present invention has a particle size of 0.1.
100 parts by weight of inorganic particulate aggregate in the range of 1 to 5 mm,
Maximum particle size is larger than inorganic granular aggregate and particle size is 0.2
2 to 20 parts by weight of a lightweight aggregate having moisture absorption / desorption performance and elasticity in a range of up to 7 mm, and a resin solid content concentration in a range of 5 to 25% with respect to 100 parts by weight of this mixture. After adding 0.5 to 5 parts by weight of a resin binder as a resin solid content and 0.1 to 2 parts by weight of an aqueous paste material and moistening, adding an inorganic porous powder having a particle size of 1000 μm or less to 2 to 2 parts by weight.
It is made by adding 20 parts by weight, stirring and mixing, and drying the inorganic granular aggregate having the inorganic porous powder spread on the surface and the lightweight aggregate.

[0009]

According to the present invention, since the inorganic porous powder is spread on the surface of the inorganic granular aggregate, the inorganic porous powder is exposed to the finished surface without impairing the appearance of the sand wall, and the inorganic porous powder is exposed to the finished surface. The moisture absorption / release performance can be imparted to the wall surface without impairing the moisture absorption / release performance of the porous powder.

According to the second aspect of the present invention, since the lightweight aggregate having a maximum particle size larger than that of the inorganic particulate aggregate is mixed, the surface of the iron comes into contact with the lightweight aggregate, and the lightweight aggregate is formed. Despite the inorganic porous powder being spread on the surface, the elasticity of the lightweight aggregate causes a moderate escape, and the lightweight aggregate does not get caught on the iron surface and the ironing workability is good. Things.

According to the third aspect of the present invention, when the inorganic porous powder is spread on the surface of the inorganic granular aggregate, 100 parts by weight of a mixture of the inorganic granular aggregate and the lightweight aggregate is used. On the other hand, a synthetic resin binder having a resin solid content in the range of 5 to 25% as a resin solid content of 0.5 to 5 parts by weight,
0.1 to 2 parts by weight of the aqueous paste is added and wetted, and the inorganic porous powder is added at a ratio of 2 to 20 parts by weight. Without peeling off from the surface of the aggregate, clogging of the fine pores of the inorganic porous powder by the synthetic resin binder can be suppressed, and a wall surface finishing material that maintains the moisture absorption / release performance of the inorganic porous powder can be produced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The inorganic granular aggregate used in the practice of the present invention has an average particle size of 0.1 to 5 mm, preferably 0.2 to 3 mm, and is representative of silica sand and cold water stone. It is a granular aggregate, and the inorganic granular aggregate can be replaced with an artificial inorganic granulated material in addition to natural quartz sand and cold water stone.

The lightweight aggregate having moisture absorption / desorption performance and elasticity used in the practice of the present invention has a particle size of 0.2 to 7 mm.
Is a lightweight aggregate represented by wood flour in the range of, but in addition to wood flour, rock wool, kenaf, pulp granules, etc. having moisture absorption / desorption performance and appropriate elasticity can be used. A finished surface having high moisture absorption / desorption performance can also be obtained by its moisture absorption / desorption performance.

By blending a lightweight aggregate having a maximum particle size larger than that of the inorganic particulate aggregate, the lightweight aggregate that comes into contact with the iron surface exhibits an appropriate elasticity, and the wall finishing material and the iron are caught by the iron coating. And workability can be improved. The maximum particle size of the lightweight aggregate should be larger than that of the inorganic granular aggregate. However, if the maximum size is extremely larger than that of the inorganic granular aggregate, the workability at the time of troweling is deteriorated. When the particle size of the lightweight aggregate is smaller than the particle size of the inorganic granular aggregate, not only the finished surface becomes clogged, the appearance of the sand wall-like finished surface deteriorates, but also the inorganic porous material spread on the surface of the inorganic granular aggregate. The contact resistance between the powder and the iron surface increases, and the ironing workability decreases.

The inorganic granular aggregate and the lightweight aggregate are sieved because they are distributed in a wide range of particle sizes in the manufacturing process. The inorganic granular aggregates such as silica sand and cold water stone have a particle size of 0.1 to 5 m.
In the range of m, the lightweight aggregate represented by wood flour has a particle size of 0.
Adjust to a range of 2 to 7 mm. When the particle size of the inorganic granular aggregate and the lightweight aggregate exceeds a predetermined range, the workability at the time of troweling is reduced and the finished surface tends to have uneven iron. Further, when the particle diameter of the inorganic granular aggregate and the lightweight aggregate is smaller than a predetermined range, it becomes difficult to show a sand wall-like uneven pattern on the finished surface.

The lightweight aggregate should be blended in a ratio of 2 to 20 parts by weight with respect to 100 parts by weight of the inorganic particulate aggregate. When the wall finishing material of the present invention is troweled, the lightweight aggregate is Sliding of the inorganic granular aggregate is suppressed, and preferable iron elongation characteristics are exhibited. If the amount of lightweight aggregate exceeds this range,
The unevenness of the finished surface disappears and the appearance of the sand wall tone is impaired. Conversely, if it is less than this range, the appropriate elasticity of the lightweight aggregate at the time of ironing work is impaired, and the workability of ironing deteriorates.

As the inorganic porous powder used in the practice of the present invention, diatomaceous earth, zeolite, sepiolite, activated carbon, Shirasu (Hakushu), Kanuma soil, etc. are used, and these may be used alone or in combination of two or more. Can be used. The particle diameter of the inorganic porous powder should be adjusted to 1000 μm or less, preferably in the range of 10 to 100 μm. Exceeding this range deteriorates trowel coating workability. Difficult to spread.

The amount of the inorganic porous powder should be 2 to 20 parts by weight, preferably 2 to 10 parts by weight, based on 100 parts by weight of the inorganic particulate aggregate. Within this range, the inorganic porous powder is entirely spread on the surface of the inorganic granular aggregate. The mixing ratio of the inorganic porous powder to the inorganic granular aggregate is an important factor for smoothing ironing workability and forming a finished surface having high moisture absorption and release properties. Exceeds this range, the friction between the inorganic porous powder and the iron increases, the elongation and separation of the iron deteriorate, and the workability of iron coating deteriorates. On the other hand, if it is below this range, sufficient moisture absorption / release performance will not be exhibited.

In carrying out the method of the present invention, when the inorganic porous powder is spread on the surfaces of the inorganic particulate aggregate and the lightweight aggregate, the resin solid content concentration is 5 parts per 100 parts by weight of the inorganic particulate aggregate. 0.5 to 5 parts by weight of a synthetic resin binder in a range of ２５25% as a resin solid content, and 0.1 to 2 parts by weight of an aqueous paste material, and using a high-speed fluid mixer, What is necessary is just to stir and mix at a peripheral speed of 1 to 10 m per second.

As the synthetic resin binder to be added to the mixture of the inorganic particulate aggregate and the lightweight aggregate, those having a resin solid content of 5 to 25% are used. When the resin solids concentration exceeds this range, the surface of the inorganic porous powder is covered with a synthetic resin binder film, and the moisture absorption / desorption performance is reduced. In addition, it becomes difficult to spread the inorganic porous powder on the surface of the lightweight aggregate. The synthetic resin binder used in the method of the present invention is not a synthetic resin binder having a resin solid concentration of 40 to 60% used for a general wall finishing material, but a synthetic resin binder having a low concentration of 5 to 25%. Since it uses diatomaceous earth and zeolite having a particle size of 1000 μm or less, the moisture absorption and desorption performance of the inorganic porous powder represented by sepiolite is not impaired, and the moisture absorption and desorption performance can be imparted to the wall surface. it can.

The synthetic resin binder is added in an amount of 0.5 to 5 parts by weight, preferably 0.5 to 3 parts by weight, based on 100 parts by weight of the mixture of the inorganic granular aggregate and the lightweight aggregate. When the mixing ratio of the resin solids exceeds 5 parts by weight, the surface of the inorganic porous powder is covered with a film of the synthetic resin binder, and the moisture absorption / release performance is reduced. When the amount is less than 0.5 parts by weight, it becomes difficult to spread the inorganic porous powder on the surfaces of the inorganic granular aggregate and the lightweight aggregate. Examples of the synthetic resin binder suitable for carrying out the present invention include a vinyl acetate emulsion resin and an acrylate emulsion resin. In particular, a moisture-permeable emulsion resin is suitable for maintaining the moisture absorption / release performance.

In carrying out the method of the present invention, the aqueous paste should be added at a ratio of 0.1 to 2 parts by weight based on 100 parts by weight of the mixture of the inorganic particulate aggregate and the lightweight aggregate. When the blending ratio of the filler exceeds this range, the inorganic granular aggregate and the lightweight aggregate become clumpy, and when the blending ratio is below this range, the inorganic porous powder spreads on the surface of the inorganic granular aggregate and the lightweight aggregate. It becomes difficult. As the aqueous paste, methyl cellulose (MC), carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA), hydroxyethyl cellulose (HEC), polyethylene oxide (PEO),
Guar gum and the like.

The drying conditions after the inorganic porous powder is spread on the surfaces of the inorganic granular aggregate and the lightweight aggregate vary depending on the types of the synthetic resin binder and the aqueous paste, but are usually 70 to 1
It is dried at a temperature of 20 ° C. for about 2 to 4 hours.

When the wall surface finishing material of the present invention is iron-coated on the wall surface, water is added in an amount of 40 to 70 parts by weight, powder emulsion 3 to 15 parts by weight, and aqueous paste 1 to 5 parts by weight based on 100 parts by weight of the wall surface finishing material.
After adding the weight part and mixing with stirring, it is applied to the wall surface using a trowel.

In the practice of the present invention, an appropriate amount of a colorant and talc, such as talc, may be added. Inorganic pigments, organic pigments, and colored soils are preferred as typical colorants. The coloring agent and the talc are mixed in a ratio of 1 to 10 parts by weight based on 100 parts by weight of the mixture of the inorganic granular aggregate and the lightweight aggregate. When adding the colorant and talc,
What is necessary is just to add simultaneously with an inorganic porous powder.

[0026]

[Example] [Reference Example] Particle size of 0.3 as inorganic granular aggregate
3,000 g of natural silica sand sieved to ~ 1.2 mm
Then, 300 g of an acrylate-based emulsion resin having a resin solid concentration of 50% was added thereto and wetted, and then 120 g of an inorganic pigment and 60 g of talc were added to the total amount of the aggregate, and the mixture was uniformly mixed, followed by high-speed flow. The mixture was stirred and mixed at a peripheral speed of 7 m / sec for several minutes using a mixer, and the inorganic pigment and talc were spread on the surface of the inorganic granular aggregate.
It was dried with a hot air dryer at 00 ° C. for 2 hours to prepare a wall surface finishing material.

Then, C was added to 2,000 g of the wall surface finishing material.
MC 30g, powdered vinyl acetate resin 100g and water 1,
100 g was added and kneaded uniformly, and this was iron-coated on a wall made of gypsum plaster. Workability such as iron elongation and iron separation was good.
Could be painted. The dried finished surface had a fine textured pattern peculiar to a sand wall and was rich in texture, and had a moisture absorbing and releasing performance as shown in Table 1.

The amount of moisture absorption / desorption was measured by cutting a gypsum board base into a size of 1 m2, applying a wall surface finishing material to the surface to prepare a test piece, and drying and curing at room temperature for about 7 days.
The side and back surfaces of the cut test pieces are sealed without moisture absorption. Then, it was left in a thermo-hygrostat at a temperature of 20 ° C. and a humidity of 90% for 24 hours, and the change in the amount of absorbed moisture before and after the start was measured.

Example 1 Natural silica sand sieved as inorganic particulate aggregate having a particle size of 0.3 to 1.2 mm
To 100 g, 300 g of an acrylate-based emulsion resin having a resin solid content of 15% and 4 g of MC were added and wetted, and then 100 g of an inorganic pigment, 60 g of talc, and an inorganic porous material whose particle diameter was adjusted to a range of 10 to 100 μm. 200 g of diatomaceous earth, which is a powder, is added and mixed uniformly, and stirred and mixed at a peripheral speed of 7 m / s for several minutes using a high-speed fluid mixer, and the inorganic pigment, talc and inorganic The porous powder was spread, and the obtained granules were dried with a hot air dryer at 100 ° C. for 2 hours to prepare a wall surface finishing material.

Next, 2,000 g of the wall surface finishing material was
MC 30g, powdered vinyl acetate resin 100g and water 1,
When 200 g was added and kneaded uniformly, and the mixture was iron-coated on the wall made of gypsum plaster, workability such as iron elongation and iron separation was slightly inferior to those of the reference example. With respect to the dried finished surface, a concavo-convex pattern peculiar to a sand wall could be expressed, and the moisture absorption / release performance was improved as compared with the Reference Example. The results are as shown in Table 1.

EXAMPLE 2 Natural silica sand sieved as inorganic particulate aggregate having a particle size of 0.3 to 1.2 mm was used.
00g and 150 g of wood flour sieved to a particle size of 0.3 to 1.5 mm as a lightweight aggregate are mixed, and 300 g of an acrylic acid ester emulsion resin having a resin solid content of 15% and 4 g of MC are mixed. In addition, after moistening, the inorganic pigment 120g based on the total amount of the inorganic particulate aggregate and the lightweight aggregate,
60 g of talc and 200 g of diatomaceous earth, which is an inorganic porous powder having a particle diameter adjusted to a range of 10 to 100 μm, are added, and the mixture is stirred and mixed at a peripheral speed of 7 m per second for 5 minutes using a high-speed mixer. Inorganic pigment, talc and inorganic porous powder are spread on the surface of the inorganic granular aggregate and the lightweight aggregate, and the obtained granules are dried with a hot air dryer at 100 ° C. for 2 hours to prepare a wall surface finishing material. did.

Next, 2,000 g of the wall surface finishing material was
MC 30g, powdered vinyl acetate resin 100g and water 1,
When 400 g was added and kneaded uniformly, and this was iron-coated on a wall made of plaster plaster, workability such as iron elongation and iron separation was good.
Could be painted. The dry finished surface has a fine uneven pattern peculiar to the sand wall, and is rich in texture due to the incorporation of colored aggregates with irregular shaped wood flour as the core, and high absorption and release as shown in Table 1. It had a wet performance.

[Comparative Example] As the inorganic granular aggregate, the particle diameter was 0.1.
Natural quartz sand sieved to 3 to 1.2 mm 3,000
g, and 150 g of wood flour sieved to a particle size of 0.3 to 1.5 mm as a lightweight aggregate were mixed.
G of 300% acrylate emulsion resin
After adding and moistening, 120 g of inorganic pigment, 60 g of talc and a particle size of 10 to 100 μm are added to the total amount of the aggregate.
diatomaceous earth 2 which is an inorganic porous powder adjusted to the range of m
Of the inorganic particulate aggregate and the light-weight aggregate with the inorganic pigment, talc and inorganic porous powder on the surface of the inorganic granular aggregate and the lightweight aggregate using a high-speed fluid mixer. The granules were spread, and the obtained granules were dried with a hot air dryer at 100 ° C. for 2 hours to prepare a wall surface finishing material.

Next, 2,000 g of the wall surface finishing material was
MC 30g, powdered vinyl acetate resin 100g and water 1,
100 g was added and kneaded uniformly, and this was iron-coated on a wall made of gypsum plaster. Workability such as iron elongation and iron separation was almost the same as that of the reference example. Although an uneven pattern could be confirmed, the moisture absorption / desorption performance was as shown in Table 1, and the result was equivalent to that of the conventional sand wall.

[0035]

[Table 1]

[0036]

According to the wall surface finishing material of the present invention and the method for producing the same, it is possible to impart excellent moisture absorption / desorption performance to the wall surface, enhance the indoor humidity control performance, and exhibit a sand wall appearance. Practical effects are enormous, such as obtaining a beautifully finished surface.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C04B 14:02 C04B 14:02 B 20:00) 20:00) B 103: 46 103: 46 103: 65 103: 65 111: 27 111: 27 111: 40 111: 40

Claims (3)

[Claims] 1. A sand-wall-finished iron-coated wall finishing material having moisture absorption / release properties, characterized by blending an inorganic particulate aggregate having an inorganic porous powder spread on its surface. 2. 100 parts by weight of an inorganic particulate aggregate having a particle size in the range of 0.1 to 5 mm, and a maximum particle size larger than that of the inorganic granular aggregate and a particle size in the range of 0.2 to 7 mm. Mixing 2-20 parts by weight of lightweight aggregate having moisture absorption / release performance and elasticity, inorganic porous powder is spread on the surface of inorganic granular aggregate and lightweight aggregate, and inorganic porous powder is A sand-wall-like trowel-coated wall finishing material having moisture absorption and desorption properties, wherein the particle size is 1000 μm or less and the total amount is 2 to 20 parts by weight. 3. An inorganic particulate aggregate having a particle diameter in the range of 0.1 to 5 mm, 100 parts by weight, and a maximum particle diameter larger than that of the inorganic granular aggregate and a particle diameter in the range of 0.2 to 7 mm. 2 to 20 parts by weight of a lightweight aggregate having moisture absorption / desorption performance and elasticity are mixed, and a synthetic resin binder having a resin solid content concentration of 5 to 25% with respect to 100 parts by weight of the mixture is mixed with a resin solid content. 0.5 to 5 parts by weight and 0.1 to 2 parts by weight of aqueous paste are added and wetted, and the particle size is 1000 μm
2 to 20 parts by weight of the following inorganic porous powder are added and mixed by stirring, and the inorganic particulate aggregate and the lightweight aggregate having the inorganic porous powder spread on the surface are dried. A method for producing a sand-finished trowel-coated wall finish with wet performance.