JP2003247316A - Decorative structure of building surface - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the decorative structure of a building surface having excellent moisture absorption-desorption performance while jointly having performance such as water-absorption preventive properties, stain preventive properties or the like. <P>SOLUTION: A moisture absorption-desorption layer and a finish coating layer are laminated successively on the base material of the building in the decorative structure. The finish coating layer contains (A) a silicone emulsion and (B) a synthetic-resin emulsion excepting the above emulsion (A), and is formed of finish coating paints in which a solid content ratio of a component (A) to a component (B) is 95:5-5:95. <P>COPYRIGHT: (C)2003,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates mainly to a building interior surface.
For decorative structures on building surfaces that can be applied to buildings
Things. [0002] 2. Description of the Related Art Hitherto, lacquer has been used as an inner wall material of a building.
Eat, wall soil, plaster, mortar, etc. are used.
Even if these materials are hygroscopic, they also have sufficient moisture release
Not one thing. In contrast, materials with moisture absorption and release properties
Then, a coating material containing moisture-absorbing and releasing components such as diatomaceous earth
Attention has been paid. For example, in Patent Document 1, a specific particle diameter
With essential synthetic resin emulsion and diatomaceous earth
Fees have been proposed. [0003] However, there is a problem described in the publication.
The surface of the coating film formed by the paint
In addition, it has the property of absorbing moisture. For this reason,
When moisture adheres to the surface, the moisture is absorbed and diffused into the coating film early
Is done. If water contains water-soluble or dispersed components, etc.
In this case, these components are also absorbed and diffused into the coating film. Further
If the substance in the water has discoloration or coloring,
Discoloration and stains of the coating on the part where
Become. On the other hand, clear paint is applied on the moisture absorbing and releasing
There is a method of painting, but in this method,
Texture is impaired, moisture absorption / desorption is impaired, or
Problems such as swelling of the coating film tend to occur. Patent
In Reference 2, a topcoat paint applicable to moisture-absorbing and desorbing substrates
Is described. However, the overcoat described in the publication
For paints, use a large amount of extender pigments such as clay and calcium carbonate.
Contained, conceal the color of the moisture-absorbing and desorbing substrate, and reduce design
It is what makes it go down. In addition, the formed coating film
It is easy to absorb and may cause discoloration of the coating film. A
Mainly composed of monomers and oligomers such as alkoxysilane compounds
The method of applying a water repellent to be used for
It is effective for resilient substrates. But a neutral coating
When applied to, the alkoxysilane compound is difficult to react
And the alkoxysilane compound is not fixed in the coating film
Therefore, the water repellent effect cannot be maintained for a long time
No. The present invention has been made in view of the above points.
And has excellent moisture absorption / desorption performance and prevents water absorption
Decorative structure on the surface of the building, which has performance such as anti-fouling and anti-dirt properties
The purpose is to provide a structure. [0005] [Patent Document 1] Japanese Patent Publication No. 62-15108 [Patent Document 2] JP-A-9-136366 [0006] [Means for Solving the Problems] To solve these problems
Therefore, the present inventors have conducted intensive studies and found that the moisture absorbing / releasing layer and the overcoat layer
Form a topcoat layer in a decorative structure in which
As a top coat, a paint that combines multiple specific resins
The present invention has been completed by conceiving use. That is, the present invention has the following features.
It is. 1. The moisture absorbing / releasing layer and the topcoat layer are sequentially stacked on the building base material.
A laminated decorative structure, wherein the overcoat layer comprises:
Emulsion and (B) a synthetic tree other than (A)
Fat emulsion, containing (A) component and (B) component
With a topcoat having a solid content ratio of 95: 5 to 5:95.
Building surface characterized by being formed by
Makeup structure. 2. The moisture absorption / release layer contains a binder, moisture absorption / desorption components, and aggregate.
Must be formed by a moisture-absorbing and desorbing coating material
1. The decorative structure on the surface of a building according to the above. 3. Moisture absorption / desorption characteristic value is 50 g / m²It is characteristic that it is above
1. Or 2. The decorative structure on the surface of a building according to the above. [0008] BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described with its embodiments.
Both will be described in detail. (1) Building base material The present invention can be applied to the base material surface of a building.
Wear. Specifically, as the base material, for example, gypsum boa
Plywood, plywood, concrete, mortar, porcelain tile, textile
Mixed cement board, cement calcium silicate board, slag
Mento perlite board, asbestos cement board, ALC board, size
Sheet, extruded plate, steel plate, plastic plate, etc.
I can do it. The surface of these substrates is treated with some surface treatment (eg,
For example, sealers, surfacers, fillers, etc.)
May have been applied, or may have a coating already formed.
In addition, the wallpaper may be attached. (2) moisture absorbing / releasing layer Moisture absorption and release layer in the present invention, as long as it has moisture absorption and release properties
It is not limited, and may be formed by a known moisture absorbing / releasing coating material.
Can also be used. Among them, in the present invention, the following method
Therefore, the measured moisture absorption / desorption characteristic value is 50 g / m²Above
Some are preferred. (Weight absorption / desorption characteristic value) Weight W of prepared specimen
_D0After measuring the temperature, this was measured at a temperature of 20 ° C and a humidity of 90%.
After standing for 24 hours, weight W_W1, Followed by temperature 2
Left at 0 ° C and 45% humidity for 24 hours, weight W_D1Measure
Set. Repeat the same operation one more time,
Weight W_W2And dry weight W_D2And measure. Next
Then, as shown in FIG. 1, the horizontal axis represents time, and the vertical axis represents weight.
Create a moisture absorption / desorption curve and calculate the moisture absorption / desorption characteristic value using the following formula.
And find the average. Moisture absorption W₁(G) = W_W1-W_D0 Moisture release W₂(G) = W_W1-W_D1 Moisture absorption W₃(G) = W_W2-W_D1 Moisture release W₄(G) = W_W2-W_D2 Moisture absorption / desorption characteristic value (g / m²) = (W₁+ W₂+ W₃+
W₄) / {4 × (specimen area)} A coating material for forming a moisture absorbing / releasing layer (hereinafter referred to as "moisture absorbing / releasing property")
Binder), moisture-absorbing and moisture-absorbing ingredients, and bone
Uses materials that contain materials to form a decorative surface with high designability
It is possible to do. As the binder, water-soluble resin and water-dispersible
One or more selected from resins are preferred. Resin type and
For example, for example, cellulose, polyvinyl alcohol,
Ethylene resin, vinyl acetate resin, polyester resin,
Liquid resin, vinyl chloride resin, epoxy resin, acrylic
Resin, urethane resin, silicone resin, fluorine resin
Or a composite thereof.
Use a binder containing a reactive functional group in the resin.
Can also be used. Such a reactive functional group-containing bond
When an agent is used, a functional group capable of reacting with the reactive functional group
Together with a crosslinking agent having a group (hereinafter simply referred to as "crosslinking agent").
Depending on the application, water resistance, moisture resistance, strength, adhesion,
Further, the moisture absorption / release properties can be improved. like this
Examples of combinations of functional groups include, for example, carboxyl
Group and metal ion, carboxyl group and carbodiimide group,
Carboxyl group and epoxy group, carboxyl group and aziri
Gin group, carboxyl group and oxazoline group, hydroxyl group and
Socyanate group, carbonyl group and hydrazide group, epoxy
And an amino group and the like. In particular, the reaction of the binder
As a functional functional group, a carboxyl group is desirable.
Carbodiimide compounds, epoxy
Compounds, aziridine compounds, oxazoline compounds, etc. are preferred.
Appropriately used. As the moisture absorbing and releasing component, for example, silica gel
, Zeolite, sodium sulfate, alumina, diatomaceous earth,
Siliceous shale, allophane, sepiolite, atavaljay
, Montmorillonite, zonolite, imogolite, large
Taniishi flour, activated clay, charcoal, activated carbon, wood flour, synthetic resin fine particles
And one or more selected from these.
Can be used. In the present invention, in particular, silica gel
When water is used, a decrease in water resistance can be suppressed.
New The particle size of the moisture absorbing and releasing component is not particularly limited.
However, 0.05 to 100 μm, preferably 0.1 to 50
μm, more preferably about 0.2 to 20 μm
Can be used. The moisture-absorbing / desorbing component has a temperature of 20 ° C.
Moisture absorption at 65% humidity (hereinafter simply referred to as "moisture absorption"
) Is at least 10% by weight, and more preferably at least 20% by weight.
Those are preferred. Incidentally, the moisture absorption in the present invention,
After drying the hygroscopic component at 120 ° C. for 1 hour,
Moisture was absorbed for 24 hours in a thermo-hygrostat at 0 ° C. and 65% humidity.
It is a value obtained from the weight change at the time. That is, the following equation
Is a value calculated by (Formula) Moisture absorption rate (% by weight) = ｛(weight when moisture is absorbed-when dried)
Weight) / dry weight｝ × 100 In the present invention, the moisture absorbing / releasing component is a synthetic component.
Resin fine particles are also suitable. Use of synthetic resin fine particles
Makes it possible to present a highly sharp appearance
You. In particular, use of carboxyl group-containing synthetic resin fine particles.
If it is, by the reactivity with the above-mentioned crosslinking agent, water resistance, moisture resistance
Properties, moisture absorption and desorption properties, etc. can be improved. In addition,
The synthetic resin particles have a crosslinked structure from the viewpoint of improving moisture absorption / desorption properties.
It is desirable that Such a crosslinked structure
Is divinylbenzene, ethylene glycol di (meth)
Crosslinkability of acrylate, methylenebisacrylamide, etc.
Using a monomer or a crosslinkable compound such as a hydrazine compound
Can be introduced. As a moisture absorbing and releasing component
When synthetic resin fine particles are used, the average of synthetic resin fine particles
The particle size is usually 20 μm or less, preferably 0.05 to 5
μm. The moisture-absorbing / desorbing component has a binder solid content of 100
1 to 150 parts by weight, 5 to 100 parts by weight based on parts by weight
Parts, preferably 10 to 60 parts by weight. [0016] Aggregates can be given various designs.
It is a natural ingredient such as natural stone, crushed natural stone, etc.
Wood, and at least one selected from artificial aggregates such as colored aggregates
More than one type can be used. Specifically, for example,
Stone, granite, serpentine, granite, fluorite, dolomite, feldspar, silica
Stone, quartz sand, their crushed products, porcelain crushed products, ceramics
Crushed material, glass crushed material, glass beads, resin crushed
Objects, resin beads, metal particles, etc.
And the like. The aggregate particle size is usually
0.01 mm to 2.0 mm, preferably 0.1 to 1.0
mm. These aggregates have a binder solids content of 100% by weight.
Parts by weight, usually 30 to 3000 parts by weight, preferably 10 parts by weight.
Mix at a ratio of 0 to 2500 parts by weight. The above-mentioned moisture-absorbing and desorbing coating material is applied on a substrate.
Thus, a moisture absorbing / releasing layer can be formed. How to apply
As the method, a known method can be adopted.
For example, use painting equipment such as trowels, sprays, rollers, and brushes
Can be applied. The amount of moisture-absorbent coating material applied is
Although not limited to, usually 1-6 kg / m²It is. (3) Overcoat layer The overcoat layer in the present invention comprises (A) a silicone emulsion.
And (B) a synthetic resin emulsion other than the above (A).
It is formed by a top coat containing. This
By laminating a top coat layer, the texture and moisture absorption of the moisture
Water absorption prevention, dirt prevention, etc.
A cosmetic surface with excellent performance can be obtained. Silicone emulsion (hereinafter referred to as “(A)
Minute)), for example, dimethylpolysiloxane
Dialkyl polysiloxanes such as
Polyarylsiloxanes such as xane,
From polyalkylarylsiloxanes such as siloxane
Silicone oil or silicone resin
Mino-modified silicone, epoxy-modified silicone, carbo
Xyl-modified silicone, alcohol-modified silicone,
Modified silicone oils such as reether-modified silicone
Uses emulsion of modified silicone resin, etc.
can do. The synthetic resin emulsion (hereinafter referred to as “(B)
Minute)) is a synthetic resin other than the component (A).
Emulsions can be used. like this
As the component (B), for example, ethylene resin emulsion
, Vinyl acetate resin emulsion, polyester resin emulsion
Emulsion, alkyd resin emulsion, vinyl chloride
Resin emulsion, epoxy resin emulsion, acrylic
Resin emulsion, urethane resin emulsion,
Plastic resin emulsions and the like or composites of these
I can do it. The glass transition temperature of the component (B) is from 5 to 10.
Desirably, the temperature is 0 ° C. Glass transition temperature from 5 ℃
If it is low, the coating will be more sticky,
It will be cool. If the temperature is higher than 100 ° C, form the film at room temperature
Therefore, a large amount of a film-forming aid is required. The method for producing the component (B) is not particularly limited.
However, for example, as the emulsion polymerization method, batch polymerization, monomer droplets
Manufactured by methods such as lower polymerization and emulsion monomer drop polymerization.
be able to. As the emulsifier used for the polymerization, an anion
Emulsifier, nonionic emulsifier, cationic emulsifier, amphoteric
Used alone or in combination of two or more selected from emulsifiers
Can be. Of these, having unsaturated double bonds
If a reactive emulsifier is used, the storage stability of the topcoat
To improve water resistance, moisture resistance, etc.
It is suitable in that an excellent coating film can be formed. The solid content ratio of the components (A) and (B)
Is 95: 5 to 5:95, preferably 80:20
20:80, more preferably 75:25 to 25: 7
5 When the component (A) is less than this ratio,
Moisture release is reduced. In addition, the texture of the moisture absorption / desorption layer is impaired.
May be affected. (B) When there is little component, film formation
The water absorption and dirt prevention.
U. [0024] As the top coating, a coloring pigment or an extender may be used.
Those not included are preferred, but take into account the final finish, etc.
And use these pigments in a range that does not interfere.
You can also. Examples of the pigment include titanium oxide and zinc oxide.
Lead, carbon black, ferric oxide, black
Lead oxalate (molybdate orange), graphite, yellow iron oxide,
Ultramarine, inorganic color pigments such as cobalt green, azo,
Naphthol, pyrazolone, anthraquinone, peri
Len, quinacridone, disazo, isoindolino
, Benzimidazole, phthalocyanine, quino
Organic color pigments such as phthalones, heavy calcium carbonate,
Clay, kaolin, talc, precipitated barium sulfate, carbonic acid
Extenders such as barium and white carbon
You. In addition, wax components may be mixed in the topcoat.
Yes, for example, polyethylene, polypropylene, ethylene
Low molecular weight polyolefin-based copolymer of propylene
Box, paraffin wax, microcrystalline water
Box, polymerized wax, beeswax, cotton wax, lanolin fat
Isopropyl acid, hexyl laurate, reduced lanolin,
Polyoxyethylene lanolin alcohol ether, poly
Oxyethylene lanolin alcohol acetate, polio
Xylene ethylene cholesterol, lanolin fatty acid
Polyethylene glycol, fatty acid chrysride, hardened castor
Oil, petrolatum, polyoxyethylene hydrogenated lanolin
Alcohol ethers or their carboxylic acid
Carboxylic acid-modified product or copolymer, or higher fat
Fatty acids or their metal salts, esters, amide-containing substances, etc.
Can be mentioned. Such a wax component is used as a top coat
It is possible to further improve the water absorption prevention and dirt prevention properties of the material.
it can. In the present invention, in particular, polyethylene wax
preferable. Other additives that can be used in ordinary paints, such as
For example, thickeners, film-forming aids, leveling agents, plasticizers, freeze protection
Stoppers, pH adjusters, preservatives, fungicides, anti-algal agents, dispersants,
Use antibacterial agents, defoamers, ultraviolet absorbers, antioxidants, etc.
You can also. The top coat paint appropriately contains the components as described above.
It can be manufactured by mixing
Considering coating workability such as prevention and drying,
Has a solid content of about 5 to 40% by weight (preferably 10 to 35% by weight).
% By weight). Mainly for solid content adjustment
Water may be used. The top coat layer is formed by applying the above-mentioned top coat paint on the moisture absorbing / releasing layer.
It can be formed by coating. On this occasion,
Whether the hygroscopic coating material is in the uncured or cured state
In this state, a top coat can be applied. Painting
As a method, a known method can be adopted.
For example, use a spraying device, a roller, a brush, etc.
Can be attached. The coating amount of the overcoat layer is not particularly limited.
No, but usually 0.01-0.5kg / m²,Preferably
0.05-0.3kg / m²It is. [0026] EXAMPLES Test examples are shown below to clarify the features of the present invention.
Make sure. [Production of moisture-absorbing and releasing coating material] Mixing ratios shown in Table 1
A moisture absorbing / releasing coating material was produced at a specific rate. The raw materials are
The following were used. ・ Binder: acrylic resin emulsion (monomer group)
(MMA, 2EHA, MAA, AAm), solid content 50
Weight%, glass transition temperature 25 ℃ Hygroscopic component 1: Hydrazine of MA-AN copolymer
NaOH treated product, moisture absorption rate (under 65% humidity): 55 weight
%, Carboxyl group content: 7 mmol / g, average particle size:
0.4 μm -Moisture absorption / desorption component 2: silica gel, moisture absorption rate (humidity 65%
Bottom): 12%, hydroxyl group amount: 1 mmol / g, average
Uniform particle size: 20 μm -Moisture absorption / release component 3: diatomaceous earth, moisture absorption rate (under 65% humidity):
8%, average particle size: 28 μm ・ Cross-linking agent: oxazoline-based cross-linking agent (composition: 2-isopro
Penyl-2-oxazoline, MMA, EA), solids:
10% by weight ・ Film forming aid: 2,2,4-trimethyl-1,3-pentane
Diol monoisobutyrate ・ Thickener: hydroxyethyl cellulose ・ Antifoaming agent: mineral oil antifoaming agent -Aggregate: Brown colored aggregate with an average particle diameter of 0.2 mm and average
A mixture with a yellow colored aggregate having a particle diameter of 0.3 mm (weight ratio)
Rate = 2: 1) However, MMA: methyl methacrylate, M
A: methyl acrylate, 2EHA: 2-ethylhexy
Acrylate, MAA: methacrylic acid, AAm: ac
Lilamide, AN: acrylonitrile [0029] [Table 1] [Manufacture of Top Coating Material]
To produce a topcoat. The raw materials are shown below.
One used. ・ Silicone emulsion: dimethylpolysiloxane
Polyoxyethylene alkyl ether emulsion, solid content 5
0% by weight ・ Synthetic resin emulsion: Acrylic resin emulsion
(Monomer composition: MMA, 2EHA, MAA), solid content
50% by weight, glass transition temperature 25 ° C ・ Film forming aid: 2,2,4-trimethyl-1,3-pentane
Diol monoisobutyrate ・ Antifoaming agent: mineral oil antifoaming agent [0031] [Table 2][Preparation of test body]
Seal with acrylic resin paint, and acrylic resin on the surface
300mm x 300mm x 6mm painted sealer
Prepare a slate plate, and absorb and release moisture on the surface of this slate plate.
3kg / m of a non-functional coating material²With a trowel. Temperature 23 ℃
・ 24 hours under 50% humidity (hereinafter referred to as “standard condition”)
After drying, top coat is applied at 0.15 kg / m²Spray
-Painted and dried for 14 days under standard conditions
Body. [Test method] 1. Moisture absorption and release Weight W of prepared specimen_D0After measuring the temperature,
After standing at 20 ° C and 90% humidity for 24 hours, the weight W_W1To
Measurement, followed by 24 hours at a temperature of 20 ° C and a humidity of 45%
Leave, weight W_D1Was measured. Do the same again
Repeat, wet weight W_W2And dry weight
W_D2And were measured. Next, as shown in FIG.
The weight is plotted on the vertical axis, and a moisture absorption / desorption curve is created.
The moisture absorption / desorption characteristic values were calculated, and the average value was determined. Moisture absorption W₁(G) = W_W1-W_D0 Moisture release W₂(G) = W_W1-W_D1 Moisture absorption W₃(G) = W_W2-W_D1 Moisture release W₄(G) = W_W2-W_D2 Moisture absorption / desorption characteristic value (g / m²) = (W₁+ W₂+ W₃+
W₄) / {4 × (specimen area)} 2. Stain prevention Place the specimen horizontally with the surface of the specimen facing upward,
And put two commercially available beverages near the center of the specimen.
cc was dropped. After standing for 5 minutes, pour water over
The heat was removed and lightly wiped with dry gauze. This and
The state of the coated film surface was visually checked. Evaluation is ○:
No change in color / gloss is recognized. △: Minor change in color / gloss
Is observed, ×: large change in color and gloss is observed,
And [Test Results] Combination of hygroscopic coating material and top coating
Table 3 shows the combinations and the test results. Test Example 1
9: The moisture absorption / desorption property of the moisture absorption / desorption layer is impeded even if a top coat is applied
However, it was also excellent in stain prevention. In particular, Test Examples 1 to
No. 7 showed high moisture absorption / release performance. In Test Examples 1 to 9,
Shows no change in texture even when topcoat is applied
Was. Test Example 10 resulted in poor moisture absorption / release properties. Ma
In addition, by applying a top coat paint, the surface of the coating film becomes glossy
Come out, the texture has changed. Test Examples 11 to 12
The result was poor antifouling property. [0036] [Table 3][0037] According to the present invention, excellent moisture absorption / desorption performance is obtained.
Performance, such as water absorption prevention and dirt prevention.
A decorative structure on the surface of the building can be obtained.

[Brief description of the drawings] FIG. 1 is a graph showing a method for measuring a moisture absorption / desorption characteristic value. [Explanation of symbols] 1: moisture absorption / desorption curve 2: W_D0 3: W_W1 4: W_D1 5: W_W2 6: W_D2

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Claims (1)

Claims 1. A decorative structure in which a moisture absorbing / releasing layer and an overcoat layer are sequentially laminated on a base material of a building, wherein the overcoat layer comprises:
(A) a silicone emulsion, and (B) the (A)
And a synthetic resin emulsion having a solid content ratio of the component (A) and the component (B) of 95: 5 to 5:95. Surface makeup structure.