JP5049090B2 - Thermal insulation laminate - Google Patents

Description

  The present invention relates to a novel heat-insulating and heat-insulating laminate. The laminate of the present invention can be applied to building exterior surfaces such as outer walls, roofs, and rooftops. In the present invention, a decorative finish such as a natural stone tone can be obtained.

On the exterior of buildings, aesthetics are required from a landscape perspective. In buildings, there is a movement to save energy by increasing the heat insulation of exterior surfaces such as outer walls, roofs, and rooftops.
Under such a background, various techniques have been proposed. For example, Japanese Patent Application Laid-Open No. 2002-186896 describes that as a coating film structure on an exterior wall surface of a building, at least two layers of a heat insulating coating layer and a stone-like coating layer are provided. According to the technique described in this patent document, it is possible to obtain a stone-like decorative finish while imparting heat insulation to a building exterior surface, which is also preferable in terms of aesthetics.

Japanese Patent Laid-Open No. 2002-186896

  By the way, in recent years, in cities, a climate unique to cities has been created by artificial radiant heat exhausted from concrete buildings and cooling. Especially in summer, the outdoor temperature rise in urban areas is remarkable, causing a problem called the heat island phenomenon. On the other hand, in buildings, the indoor temperature is often lowered by using cooling, but the heavy use of cooling not only increases the power consumption energy but also increases the outdoor temperature by exhausting from the outdoor unit. Is conducive.

With the techniques described in the aforementioned patent documents and the like, it is difficult to sufficiently cope with such problems.
Furthermore, in the coating structure as in the above patent document, when the heat insulation performance of the heat insulating coating layer is increased, the heat generated in the stone-like coating layer cannot be conducted / diffused in the lower layer direction, and the temperature of the upper layer Invite to rise. That is, the improvement of the heat insulation performance of the lower layer increases the thermal load on the stone-like coating film layer. Such an increase in the thermal load causes swelling, peeling, floating, etc. of the coating film.

This invention is made in view of such a point, and while being able to form the finishing surface with high decorativeness with respect to the surface of a building exterior surface, it suppresses the temperature rise of a building and saves energy. The purpose is to provide technology that also contributes.

  In order to solve such problems, the present inventors have intensively studied and, as a result, have arrived at the idea of laminating a decorative coating material containing an organic binder and specific colored particles on a heat-insulating undercoat layer. The present invention has been completed.

That is, the present invention has the following characteristics.
1. It is a heat-insulating and heat-insulating laminate constituting the building exterior surface,
From the indoor side to the outdoor side of the exterior surface, the base layer (A), the heat-insulating undercoat layer (B) formed by the binder and the primer containing the hollow particles, the organic binder, and the particle size of 0. Having a decorative material layer (C) formed by a decorative coating material containing colored particles of 01 to 5 mm,
As the colored particles in the decorative material layer (C), particles having a base particle coated with an infrared reflective powder and / or particles comprising an aggregate of infrared reflective powder,
A heat-insulating and heat-insulating laminate comprising an inorganic binder having a whiteness of 70 or more as a binder in the undercoat material .
2. The decorative material layer (C) is a discontinuous layer separated by joints, and the heat-insulating undercoat layer (B) is exposed at the joints. The heat insulation heat insulation laminated body of description.
3. It is a heat-insulating and heat-insulating laminate constituting the building exterior surface,
From the indoor side to the outdoor side of the exterior surface, the base layer (A), the heat-insulating undercoat layer (B) formed by the base material containing the binder and hollow particles, the binder and the infrared reflective powder An intermediate coating layer (B ′) formed by an intermediate coating material containing, an organic binder, and a decorative material layer (C) formed by a decorative coating material containing colored particles having a particle diameter of 0.01 to 5 mm. And
As the colored particles in the decorative material layer (C), particles having a base particle coated with an infrared reflective powder and / or particles comprising an aggregate of infrared reflective powder,
A heat-insulating and heat-insulating laminate comprising an inorganic binder having a whiteness of 70 or more as a binder in the undercoat material .
4). The decorative material layer (C) is a discontinuous layer separated by joints, and the intermediate coating layer (B ′) is exposed at the joints. The heat insulation heat insulation laminated body of description.
5. The undercoat material contains a binder, hollow particles, and infrared reflective powder. ~ 4. The heat insulation heat insulation laminated body in any one of.

According to the present invention, it is possible to form a finished surface with high decorativeness. For example, a natural stone-like decorative finish such as granite can be obtained. The present invention is also useful as a finishing technique that replaces stones, tiles, and the like.
Furthermore, in the present invention, heat insulation and heat insulating properties can be imparted to the building exterior surface, and the temperature rise of the building can be suppressed. The present invention can be utilized as a technology that contributes to energy saving. And in this invention, generation | occurrence | production of the swelling, peeling, floating, etc. in the formed coating film can be prevented, and the coating film performance stable over the long term can be exhibited.

  Hereinafter, the best mode for carrying out the present invention will be described.

[Base material layer]
The base material layer (A) in the present invention is not particularly limited as long as it constitutes a building exterior surface. For example, concrete, mortar, cement board, extruded plate, slate plate, PC plate, ALC plate, Fiber reinforced cement board, metal board, porcelain tile, metal siding board, ceramic siding board, ceramic board, plaster board, plastic board, hard wood cement board, PVC extruded siding board, brick, plywood, etc., or a composite of these Etc. Such a base material layer may have some surface treatment layer (for example, a sealer layer, a putty layer, a surfacer layer, etc.).

[Insulating undercoat layer]
The heat insulating undercoat layer (B) is formed of an undercoat material containing a binder and hollow particles.
As the binder, an organic binder and / or an inorganic binder can be used. Among these, as the organic binder, for example, a synthetic resin emulsion, a water-soluble resin, a solvent-type resin, a solventless resin, a powder resin, and the like can be used. Specifically, as the type of resin, for example, chloroprene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, methyl methacrylate-butadiene rubber, butadiene rubber, acrylic resin, vinyl acetate resin, vinyl chloride resin, epoxy resin, asphalt, Examples include rubber asphalt. Among these, an acrylic resin emulsion is preferably used. As the acrylic resin emulsion, nitrile group-containing acrylic resin emulsion, amide group-containing acrylic resin emulsion, cationic acrylic resin emulsion and the like are particularly suitable.

Examples of the inorganic binder include colloidal metal oxides such as colloidal silica and colloidal alumina, water-soluble alkali metal silicates such as sodium silicate, potassium silicate, and lithium silicate, Portland cement, alumina cement, and acidic phosphoric acid. Examples include various cements such as salt cement, silica cement, blast furnace cement and the like. Of these, cement is preferably used.
As the inorganic binder, those having a whiteness of 70 or more (preferably 80 or more, more preferably 90 or more) are suitable. By using such a thing with high whiteness, a temperature rise inhibitory effect etc. can be heightened. In addition, the whiteness said here is L ^* value measured using a spectrophotometer.

As the binder in the undercoat material of the present invention, it is desirable to use only an organic binder or to use an inorganic binder and an organic binder in combination. Among these, when the inorganic binder and the organic binder are used in combination, the solid content weight ratio of the inorganic binder and the organic binder is 98/2 to 50/50 (preferably 95/5 to 80/20). Is desirable. Further, it is desirable to use cement as the inorganic binder and use an acrylic resin emulsion as the organic binder. As the acrylic resin emulsion, a nitrile group-containing acrylic resin emulsion, a cationic acrylic resin emulsion or the like is desirable, and a nitrile group-containing cationic acrylic resin emulsion is particularly preferable. By using such a binding material, performance such as adhesion and strength can be improved, and as a result, a stable temperature rise suppressing effect and the like can be obtained over a long period of time.

  The hollow particles are a component that imparts heat insulation to the undercoat layer (B). Examples of the hollow particles include hollow ceramic particles and hollow resin particles. Examples of the ceramic component constituting the hollow ceramic particles include sodium silicate glass, aluminum silicate glass, borosilicate sodium glass, fly ash, alumina, shirasu, obsidian and the like. Examples of the resin component constituting the hollow resin particles include acrylic resin, styrene resin, acrylic-styrene copolymer resin, acrylic-acrylonitrile copolymer resin, acrylic-styrene-acrylonitrile copolymer resin, acrylonitrile-methacrylonitrile copolymer resin, Examples thereof include acrylic-acrylonitrile-methacrylonitrile copolymer resins and vinylidene chloride-acrylonitrile copolymer resins. The hollow particles can be obtained by foaming these components by a known method.

The average particle diameter of the hollow particles is usually about 0.1 to 200 μm (preferably 1 to 150 μm). The density of the hollow particles is usually about 0.01 to 1 g / cm ³ (preferably 0.01 to 0.8 g / cm ³ ).
The mixing ratio of the hollow particles is usually 0.5 to 200 parts by weight, preferably 1 to 100 parts by weight with respect to 100 parts by weight of the solid content of the binder.

  The undercoat material of the present invention can be produced by uniformly mixing the above-described components by a known method, but other components that can be used in a normal coating material can be mixed as necessary. Examples of such components include coloring pigments, extender pigments, thickeners, film-forming aids, leveling agents, plasticizers, antifreezing agents, pH adjusters, diluents, antiseptics, antifungal agents, and algae. Agents, antibacterial agents, dispersants, antifoaming agents, ultraviolet absorbers, antioxidants, light stabilizers, fibers, catalysts, crosslinking agents and the like.

[Decoration layer]
The decorative material layer (C) in the present invention is formed of a decorative coating material containing an organic binder and colored particles having a particle diameter of 0.01 to 5 mm.

  The organic binder plays a role of fixing colored particles. Specific examples of the organic binder include synthetic resin emulsions, water-soluble resins, solvent-type resins, solventless resins, and powder resins. These may have cross-linking reactivity, and the form thereof is not particularly limited, and may be one-component type or two-component type. In the present invention, a synthetic resin emulsion and / or a water-soluble resin is particularly preferably used. Usable types of resin include, for example, cellulose, polyvinyl alcohol, ethylene resin, vinyl acetate resin, polyester resin, alkyd resin, vinyl chloride resin, epoxy resin, silicone resin, acrylic resin, urethane resin, acrylic silicon resin, fluorine Examples thereof include resins and the like, and composites thereof.

In the present invention, the colored particles in the decorative coating material include particles in which base particles are coated with an infrared reflective powder and / or particles made of an aggregate of infrared reflective powder. In the present invention, by including such specific colored particles as essential components, it is possible to form a finished surface with high decorativeness and to sufficiently suppress the temperature rise of the building.

Of the colored particles, first, the particles (hereinafter also referred to as “particles (i)”) in which the base particles are coated with the infrared reflective powder will be described.

As the base particles in the particles (i), for example, marble, granite, serpentine, granite, fluorite, cryolite, feldspar, silica, etc., quartz sand, mica, ceramics, ceramics, glass, Examples thereof include glass particles, resin particles, metal particles, and pulverized plants. Porous particles and expanded particles can also be used.

In the particle (i), the surface of the above-described base particle is coated with an infrared reflective powder. Such particles (i) can be obtained by coating the base particles with a colorant containing a binder and an infrared reflective powder. Binders include water-soluble alkali metal silicates such as sodium silicate, potassium silicate, and lithium silicate, resins such as silicone resin, acrylic resin, urethane resin, acrylic silicon resin, and fluorine resin, or composites of these. And the like.

Examples of the infrared reflective powder include aluminum flake, titanium oxide, barium sulfate, zinc oxide, calcium carbonate, silicon oxide, magnesium oxide, zirconium oxide, yttrium oxide, indium oxide, alumina, iron-chromium composite oxide, manganese -Bismuth complex oxide, manganese-yttrium complex oxide, manganese-iron-cobalt complex oxide, perylene pigment, azo pigment, quinacridone pigment, dial, vermilion, titanium red, cadmium red, isoindolinone, isoindoline, benz Examples thereof include imidazolone, phthalocyanine green, phthalocyanine blue, cobalt blue, indanthrene blue, ultramarine blue, and bitumen, and one or more of these can be used. The hue of the particles (i) can be set by appropriately selecting and preparing the type and amount of these infrared reflective powders.
The mixing ratio of the infrared reflective powder in the colorant is usually 0.1 to 100 parts by weight with respect to 100 parts by weight of the solid content of the binder.

The particles (i) can be produced by a method of mixing the base particles and the colorant and then drying the mixture. Examples of the method for mixing the colorant with the base particles include a method in which the colorant is directly mixed with the base particles and a method in which the colorant is sprayed on the base particles. As a drying method, for example, hot air drying, vacuum drying, direct heating drying, high-frequency heating drying, far-infrared heating drying, dehumidification drying, and the like can be employed.

In the present invention, in addition to the particles (i), particles composed of an aggregate of infrared reflecting powder (hereinafter also referred to as “particles (ii)”) can be used. As such particles (ii), a film obtained from a mixture of infrared reflecting powder and a binder is crushed into a predetermined particle diameter, or a mixture of infrared reflecting powder and a binder is prescribed. What was shape | molded to the particle diameter etc. can be used.

  The particle diameter of the colored particles in the decorative coating material is set to 0.01 to 5 mm (preferably 0.03 to 3 mm). When the particle diameter of the colored particles is too small, the coating film tends to become a single color and the decorativeness becomes insufficient. Conversely, when the particle size is too large, the unevenness tends to be too conspicuous.

The mixing ratio of the colored particles in the decorative coating material is usually 100 to 2000 parts by weight (preferably 200 to 1500 parts by weight) with respect to 100 parts by weight of the solid content of the organic binder.
The particles (i) and particles (ii) are desirably blended so that the total amount thereof is 50% by weight or more (preferably 80% by weight or more) in the colored particles. If it is such a ratio, the temperature rise suppression effect etc. can fully be acquired.

The decorative coating material of the present invention can contain transparent particles and / or hollow particles in addition to the above components. By including such a component, the effect of the present invention can be further enhanced.
Among these, blending of transparent particles is effective when the hue of the decorative material layer (C) is dark (specifically, L ^* value is 50 or less). This is because a desired hue can be easily obtained even when the amount of the colored aggregate is relatively reduced. As the transparent particles, those having a light transmittance of 20% or more are suitable. In addition, the light transmittance said here is the value of the total light transmittance by a turbidimeter. In this measurement, a sample of transparent particles is filled into a cell made of transparent glass having an inner thickness of 5 mm, and then gradually filled with water, and then the bubbles in the cell are removed by vibration. However, a sample having a particle diameter of 0.5 to 1.0 mm is selected and used.

Specific examples of such transparent particles include glass beads, crushed glass, silica, cryolite, feldspar, silica, resin beads, and the like.
The particle diameter of the transparent particles is usually 0.1 to 5.0 mm.
The mixing ratio of the transparent particles is usually 1 to 500 parts by weight with respect to 100 parts by weight of the solid content of the organic binder.

As the hollow particles, the same particles as those mentioned for the primer can be used.
The mixing ratio of the hollow particles is usually 5 to 300 parts by weight with respect to 100 parts by weight of the solid content of the organic binder.

  As the transparent particles and / or hollow particles, those having a true spherical shape are suitable. By using such spherical particles, it becomes possible to suppress the adhesion of contaminants or the like serving as a heat storage source, which is advantageous in terms of suppressing the temperature rise.

  The decorative coating material of the present invention can be produced by uniformly mixing the above-described components by a known method, but other components that can be used in a normal coating material can be mixed as necessary. Examples of such components include coloring pigments, extender pigments, thickeners, film-forming aids, leveling agents, plasticizers, antifreezing agents, pH adjusters, diluents, antiseptics, antifungal agents, and algae. Agents, antibacterial agents, dispersants, antifoaming agents, ultraviolet absorbers, antioxidants, light stabilizers, fibers, catalysts, crosslinking agents and the like. In addition, colored particles that do not fall within the scope of the present invention may be mixed as long as the effects of the present invention are not impaired.

[Method of forming a heat insulating and heat insulating laminate]
The heat insulation heat insulation laminated body of this invention has a base material layer (A), a heat insulation undercoat layer (B), and a decoration material layer (C) toward the outdoor side from the indoor side of an exterior surface. Such a heat-insulating and heat-insulating laminate is obtained by applying the decorative coating material after applying the primer to the base material layer (A) to form the heat-insulating primer (B). It can be obtained by forming the decorative material layer (C). Construction of each material, drying curing, etc. are usually performed at room temperature.

  The heat insulating undercoat layer (B) can be formed by applying the undercoat material on the base material layer (A). In painting, painting tools such as sprays, rollers, brushes, scissors and the like can be used. The thickness of the heat-insulating undercoat layer (B) may be appropriately set according to the desired heat-insulating performance, but is usually about 0.5 to 20 mm.

In the present invention, an intermediate coating layer (B ′) can be provided between the heat-insulating undercoat layer (B) and the decorative material layer (C). Such an intermediate coating layer (B ′) can be formed of an intermediate coating material containing a binder and an infrared reflective powder. Providing such a layer is preferable in view of the effects of the present invention. The thickness of the intermediate coating layer (B ′) is usually about 0.01 to 1 mm.
Moreover, the same effect can also be acquired by using what mix | blended infrared reflective powder as an undercoat material which forms a heat-insulating undercoat layer (B). In this case, the infrared reflective powder may be blended in an amount of usually about 1 to 400 parts by weight (preferably 2 to 200 parts by weight) with respect to 100 parts by weight of the solid content of the binder of the primer.

  The decorative material layer (C) may be formed by applying a decorative coating material on the heat-insulating undercoat layer (B) or the intermediate coating layer (B ′). In painting, painting tools such as sprays, rollers, brushes, scissors and the like can be used. The thickness of the decorative material layer (C) is usually about 0.05 to 10 mm, although it depends on the type of decorative coating material.

  In the present invention, joint patterns can also be provided on the decorative material layer (C). As a method for providing such a joint pattern, after applying a joint material on the heat-insulating undercoat layer (B) or intermediate coat layer (B ′) containing the infrared reflective powder, a decorative coating material is used. It is possible to employ a method of applying the material and then removing the joint material. In the present invention, an increase in the temperature of the entire exterior surface can be sufficiently suppressed while enhancing the aesthetics by such a joint pattern.

As the joint pattern, various patterns can be set as appropriate. Specifically, for example, tile patterns, brick patterns, geometric patterns, polka dots, striped patterns, lattice patterns, swirl patterns, heraldic patterns, graphic patterns designed for animals, plants, objects, characters, etc. Is possible. In order to express these patterns, a plurality of rod-shaped joint materials may be used in combination, or a flat pattern paper punched out according to a desired pattern shape may be used.
Examples of the material constituting the joint material include silicone rubber, fluorine rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, rubber such as SBR, resin such as polyester, polyurethane, vinyl chloride, polyethylene, polypropylene, polystyrene, and polycarbonate. And resin foams such as foamed polyurethane, foamed polyethylene, foamed polypropylene, and foamed polystyrene.
The width of the joint is usually 5 mm or more, preferably 10 to 500 mm. In the present invention, an advantageous effect can be obtained when the joint width is relatively wide.

  A clear paint or the like can be separately applied to the surface of the decorative material layer (C) for the purpose of improving weather resistance, antifouling property and the like. As the clear paint, those containing an organic binder and an alkoxysilane compound are suitable.

  Examples and Comparative Examples are shown below to clarify the features of the present invention.

(Manufacture of decorative coating material 1)
200 parts by weight of organic binder 1 is charged into a container, 700 parts by weight of aggregate 1, 12 parts by weight of a film-forming aid, 4 parts by weight of a thickener, and 6 parts by weight of an antifoaming agent are mixed. The decorative coating material 1 was manufactured by stirring uniformly by a conventional method.

(Manufacture of decorative coating material 2)
200 parts by weight of organic binder 1 is charged in a container, 700 parts by weight of aggregate 1, 50 parts by weight of hollow particles 1, 12 parts by weight of a film-forming aid, 4 parts by weight of thickener, defoaming The decorative coating material 2 was produced by mixing 6 parts by weight of the agent and stirring uniformly by a conventional method.

(Manufacture of decorative coating material 3)
200 parts by weight of organic binder 1 is charged in a container, 700 parts by weight of aggregate 2, 12 parts by weight of a film-forming aid, 4 parts by weight of a thickener, and 6 parts by weight of an antifoaming agent are mixed. The decorative coating material 3 was manufactured by stirring uniformly by a conventional method.

The following raw materials were used in the production of the decorative coating material.
Organic binder 1: acrylic resin emulsion (solid content 50% by weight, glass transition temperature 30 ° C.)
Aggregate 1: Black aggregate obtained by coating silica sand with a coloring agent 1 in which 20 parts by weight of manganese-bismuth composite oxide is mixed with 200 parts by weight of acrylic silicon resin. Particle diameter 0.2-1mm.
Aggregate 2: Black aggregate obtained by coating silica sand with a coloring agent 2 in which 20 parts by weight of carbon black is mixed with 200 parts by weight of acrylic silicon resin. Particle diameter 0.2-1mm.
Hollow particles 1: true spherical glass balloon with an average particle diameter of 40 μm, density 0.45 g / cm ³
-Film-forming aid: 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate-Thickener: Urethane thickener-Antifoaming agent: Silicone defoamer

○ Example 1
On one side of the aluminum plate, Portland cement (L ^* value 93), fly ash balloon (average particle size 90 μm, density 0.78 g / cm ³ ), nitrile group-containing cationic acrylic resin emulsion (solid content 50% by weight), Then, the primer 1 obtained by kneading and water (solid content weight ratio 100: 35: 22: 30) was applied by dip coating, and after curing for 16 hours, the decorative coating material 1 was spray-coated and cured for 14 days. .
Thus, a test body was obtained in which an undercoat layer having a dry thickness of 3 mm and a decorative material layer having a dry thickness of 2 to 3 mm were laminated. The test plates were all prepared and cured in standard conditions (temperature 23 ° C., relative humidity 50%).

(Test 1)
About the test plate obtained by the above-mentioned method, the back surface temperature when a distance of 60 cm was provided and an infrared lamp (output 250 W) was irradiated for 20 minutes was measured.

(Test 2)
The test plate obtained by the above-described method was subjected to a cycle of immersing an infrared lamp (output 250 W) for 8 hours at a distance of 60 cm and then immersing in water at 23 ° C. for 16 hours for a total of 10 cycles. Appearance change was visually observed. In the evaluation, “○” indicates that no abnormalities (bulging, peeling, floating, etc.) are observed, “△” indicates that some abnormalities are observed, and “×” indicates that abnormalities are clearly observed. went.

  The test results are shown in Table 1.

Example 2
A test body was prepared in the same manner as in Example 1 except that the decorative coating material 2 was used in place of the decorative coating material 1, and the test was performed. The test results are shown in Table 1.

○ Comparative Example 1
A test body was prepared in the same manner as in Example 1 except that the decorative coating material 3 was used in place of the decorative coating material 1, and the test was performed. The test results are shown in Table 1.

Example 3
Primer 1 was applied on one side of the aluminum plate. After curing for 24 hours, 200 parts by weight of acrylic resin emulsion (solid content 50% by weight), 520 parts by weight of calcium carbonate having an average particle size of 12 μm, 80 parts by weight of silicon oxide having an average particle size of 250 μm, and perylene red, benz An intermediate coating material 1 obtained by mixing 20 parts by weight of a mixture of imidazolone yellow and phthalocyanine blue was applied and cured for 16 hours.
Next, after bonding a joint material having a joint width of 30 mm in a lattice shape, the decorative coating material 1 was spray-coated, and the joint material was removed, followed by curing for 7 days.
As a result, an undercoat layer having a dry thickness of 3 mm, an intermediate coat layer having a dry thickness of 0.3 mm, and a decorative material layer having a dry thickness of 2 to 3 mm were laminated to obtain a test body having a grid-like joint pattern. All test plates were prepared and cured under standard conditions.
The above test 1 and test 2 were performed on the test plate obtained by the above method. The test results are shown in Table 2.

Example 4
A test body was prepared and tested in the same manner as in Example 3 except that the decorative coating material 2 was used instead of the decorative coating material 1. The test results are shown in Table 2.

Example 5
Primer 1 was applied on one side of the aluminum plate. After curing for 24 hours, a joint material having a joint width of 30 mm was attached in a lattice shape, and then the decorative coating material 1 was spray-coated, and the joint material was removed, followed by curing for 7 days.
Thus, a test body having an undercoat layer having a dry thickness of 3 mm and a decorative material layer having a dry thickness of 2 to 3 mm and having a grid-like joint pattern laminated thereon was obtained. All test plates were prepared and cured under standard conditions.
The above test 1 and test 2 were performed on the test plate obtained by the above method. The test results are shown in Table 2.

○ Reference Example 1
A test body was prepared in the same manner as in Example 3 except that the following intermediate coating material 2 was used instead of the intermediate coating material 1, and the test was performed. The test results are shown in Table 2.
Intermediate coating material 2: Mainly composed of 200 parts by weight of acrylic resin emulsion (solid content 50% by weight), 520 parts by weight of calcium carbonate having an average particle diameter of 12 μm, 80 parts by weight of silicon oxide having an average particle diameter of 250 μm, and 20 carbon black. An intermediate coating material obtained by mixing parts by weight.

○ Reference example 2
A test body was prepared in the same manner as in Example 3 except that the decorative coating material 3 was used in place of the decorative coating material 1, and the test was performed. The test results are shown in Table 2.

○ Reference Example 3
A test body was prepared and tested in the same manner as in Example 3 except that the intermediate coating material 2 was used instead of the intermediate coating material 1 and the decorative coating material 3 was used instead of the decorative coating material 1. . The test results are shown in Table 2.

○ Reference Example 4
A test body was prepared in the same manner as in Example 5 except that the following primer 2 was used in place of primer 1, and the test was performed. The test results are shown in Table 2.
Undercoat material 2: Portland cement (L ^* value 62), fly ash balloon (average particle diameter 90 μm, density 0.78 g / cm ³ ), nitrile group-containing cationic acrylic resin emulsion (solid content 50 wt%), and A primer material obtained by kneading water (weight ratio: 100: 35: 22: 30).

Claims (5)

It is a heat-insulating and heat-insulating laminate constituting the building exterior surface,
From the indoor side to the outdoor side of the exterior surface, the base layer (A), the heat-insulating undercoat layer (B) formed by the binder and the primer containing the hollow particles, the organic binder, and the particle size of 0. Having a decorative material layer (C) formed by a decorative coating material containing colored particles of 01 to 5 mm,
As the colored particles in the decorative material layer (C), particles having a base particle coated with an infrared reflective powder and / or particles comprising an aggregate of infrared reflective powder,
A heat-insulating and heat-insulating laminate comprising an inorganic binder having a whiteness of 70 or more as a binder in the undercoat material .   The heat-insulating and heat-insulating laminate according to claim 1, wherein the decorative material layer (C) is a discontinuous layer divided by joints, and the heat-insulating undercoat layer (B) is exposed at the joints. It is a heat-insulating and heat-insulating laminate constituting the building exterior surface,
From the indoor side to the outdoor side of the exterior surface, the base layer (A), the heat-insulating undercoat layer (B) formed by the base material containing the binder and hollow particles, the binder and the infrared reflective powder An intermediate coating layer (B ′) formed by an intermediate coating material containing, an organic binder, and a decorative material layer (C) formed by a decorative coating material containing colored particles having a particle diameter of 0.01 to 5 mm. And
As the colored particles in the decorative material layer (C), particles having a base particle coated with an infrared reflective powder and / or particles comprising an aggregate of infrared reflective powder,
A heat-insulating and heat-insulating laminate comprising an inorganic binder having a whiteness of 70 or more as a binder in the undercoat material .   The heat-insulating and heat-insulating laminate according to claim 3, wherein the decorative material layer (C) is a discontinuous layer divided by joints, and the intermediate coating layer (B ') is exposed at the joints. The heat-insulating and heat-insulating laminate according to any one of claims 1 to 4, wherein the undercoat material contains a binder, hollow particles, and infrared reflective powder.