JP2000313091A - Insulating composite sheet for building member, its production, and insulating building member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut off a space between the surface and back of a heat conductive building member made of aluminum and others, or to insulate heat transmission without controlling heat transmission by using the building members doubly or triply. SOLUTION: Hollow particles and as required a blowing agent are dispersed in a polymer matrix to make an insulating sheet 12, and the sheet 12 and sheets 13, 13' of low moisture permeability are laminated to make an insulating composite sheet for a building member which is resistant to compression, can maintain good insulating properties for a long period, an demonstrate good insulating properties, and is suitable to be stuck to a building member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating composite sheet for a building member, which can be applied to a building member to impart heat insulating properties to the surface thereof, thereby improving the heat insulating property of the building member. And a heat-insulating building member to which the heat-insulating composite sheet for a building member is applied.

[0002]

BACKGROUND OF THE INVENTION The original purpose of a building is to shield and protect occupants from the outside environment, to prevent wind and rain and to mitigate extreme changes in temperature. For this reason, as the various building materials constituting the building, materials that do not leak, block the wind, and have a certain degree of heat insulating properties have been used since ancient times. However, recently, not only seasonal heating and cooling, but also homes equipped with equipment that maintains a comfortable living environment throughout the year and 24 hours are increasing, and energy consumption is increasing. Energy efficiency has been improved.

For this reason, the space between the outer wall and the inner wall of the house is filled with a heat insulating material, and measures are taken to prevent the room from being excessively heated or cooled.
Glass doors and windows are not as well insulated as walls. Especially in Japan, except for the northern part of the Tohoku region, there is a relatively warm climate zone, so there is a traditional method of providing sufficient sunlight throughout the year and having a structure that is advantageous for ventilation in summer. However, it is common to have more openings than in major European and American countries with low winter temperatures.

[0004] Glass used for door panels, glass sliding doors, windows, and the like, which are opening members, is a relatively poor conductor of heat. However, some window frames that support the panel body and glass are made of iron. Except for those made of aluminum or PVC, most are made of aluminum and are good conductors of heat (= thermal conductivity). Thermally conductive building components, such as aluminum, have the advantages of being resistant to rust, do not rot, are lightweight and easy to install and use, have a clean feeling, and do not require painting. Since it is a good conductor, in winter and the like, a low outdoor temperature is transmitted, and the indoor surface becomes low. For this reason, the moisture in the indoor air is condensed on the surface of the aluminum building 1 and, in extreme cases, adheres as water droplets and eventually runs down. If you change aluminum to iron,
Although it is somewhat difficult to conduct heat, it is not as bad as a poor conductor of heat, and it can be said that there is essentially no difference.

Accordingly, there is a method in which the space between the front and back of the building member is blocked by plastic or the like, or a double or triple structure is used to suppress heat conduction. However, according to the former method, the strength of the building member is reduced. According to the latter method, the thickness of the heat conductive metal such as aluminum among the building components is disadvantageously increased, and the cost is increased by using the material twice or three times. A disadvantage is inevitable.

[0006]

Accordingly, in the present invention, the space between the front and back of a thermally conductive building member made of aluminum or the like is blocked by plastic or the like, or the building member is used in double or triple. An object of the present invention is to block the heat conduction as much as possible without suppressing the heat conduction without reducing the strength of the building component or causing the disadvantage of increasing the thickness of the material.

[0007]

In the present invention, various heat-insulating materials have been studied. As a result, hollow particles, preferably hollow particles having different particle diameters, are dispersed in a polymer matrix, When a sheet formed by dispersing both hollow particles and hydrophobic hollow particles in a polymer matrix is used as a heat insulating material, these materials are resistant to compression and, therefore, have heat insulating properties over time during use. It can maintain good heat insulation without lowering, and can also have advantages such as being able to flexibly follow and adhere to objects with complex uneven shapes on the surface, even for objects with complicated irregularities on the surface. It turned out and led to the present invention.

In a first aspect, a low moisture permeable sheet is laminated on at least one surface of the heat insulating sheet, and the heat insulating sheet is formed by dispersing different hollow particles having different particle diameters in a polymer matrix. The present invention relates to a heat-insulating composite sheet for a building component. According to a second aspect of the present invention, a low moisture permeable sheet is laminated on at least one surface of the heat insulating sheet, and the heat insulating sheet contains different hollow particles composed of hydrophilic hollow particles and hydrophobic hollow particles in a polymer matrix. The present invention relates to a heat insulating composite sheet for building components, which is dispersed. According to a third aspect, in the first or second aspect, the particle diameters of the hollow particles are different.
155a ≦ b ≦ 0.414a, and the ratio of the number N (a) of the particles having the diameter a to the number N (b) of the particles having the diameter b is ≦≦ N (a) / N (B) The present invention relates to a heat insulating composite sheet for building components, wherein ≤3 / 4. A fourth aspect of the present invention is a building component, wherein a low moisture permeable sheet is laminated on at least one surface of the heat insulating sheet, and the heat insulating sheet is formed by dispersing hollow particles in a polymer matrix. The present invention relates to a heat insulating composite sheet. A fifth invention relates to the heat-insulating composite sheet for building members according to any one of the first to fourth inventions, wherein the heat-insulating sheet further contains a large number of air bubbles. A sixth invention is directed to the heat-insulating composite sheet for a building component according to the fifth invention, wherein the diameter of the bubbles is 0.1 to 100 times the particle diameter of the hollow particles. A seventh invention is directed to the heat-insulating composite sheet for a building component according to the fifth invention, wherein the bubbles are formed by expanding a microcapsule-type foaming agent. An eighth invention is directed to the heat-insulating composite sheet for a building component according to the fifth invention, wherein bubbles are formed by expanding a low thermal conductivity gas. The ninth invention is directed to the heat insulating composite sheet for building members according to any one of the first to eighth inventions, wherein a low moisture permeable sheet is laminated on one surface of the heat insulating sheet.
In a tenth aspect, in any one of the first to eighth aspects,
The present invention relates to a heat insulating composite sheet for building components, wherein a low moisture permeable sheet is laminated on both sides of the heat insulating sheet. An eleventh invention is directed to the heat-insulating composite sheet for a building component according to any one of the first to tenth inventions, wherein a makeup is applied. According to a twelfth aspect, in the eleventh aspect, coloring, printing, embossing,
The present invention also relates to a heat-insulating composite sheet for a building component, which has been subjected to makeup by at least one of wiping painting. A thirteenth invention relates to the heat insulating composite sheet for building members according to the eleventh or twelfth invention, further provided with a protective layer for protecting makeup. A fourteenth invention performs a step of applying a coating composition prepared by dispersing hollow particles and a foaming agent in a resin liquid constituting a polymer matrix on a low moisture-permeable sheet, and then performing a drying step and The present invention relates to a method for producing a heat insulating composite sheet for a building component, which comprises performing a heating foaming step. According to a fifteenth aspect, a step of applying a coating composition prepared by dispersing hollow particles and a foaming agent in a resin liquid constituting a polymer matrix on a low moisture-permeable sheet is performed, followed by a drying step and a heating step. A method for producing a heat insulating composite sheet for a building component, comprising performing a foaming step and a step of laminating another low moisture permeable sheet on a coating composition application surface. According to a sixteenth aspect, by performing a step of applying a coating composition prepared by dispersing hollow particles and a foaming agent in a resin liquid constituting a polymer matrix, and then performing a drying step and a heat foaming step, The present invention relates to a heat insulating composite sheet for building components, wherein a low moisture permeable sheet is laminated on at least one surface of the obtained heat insulating sheet. According to a seventeenth aspect, a plate or panel made of a heat conductive material is provided with a first material.
A heat-insulating building member, wherein the heat-insulating composite sheet for a building member according to any one of the thirteenth to thirteenth aspects is laminated. Eighteenth
The present invention relates to a heat-insulating building member characterized in that the heat-insulating composite sheet for a building member according to any one of the first to thirteenth inventions is laminated on an extruded member made of a heat conductive material. is there.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIGS. 1 (a) to 1 (c), a heat insulating composite sheet
1 uses a sheet (or layer) 12 dispersed in a polymer matrix as a heat insulating sheet (or heat insulating layer). More preferably, it contains a large number of fine bubbles. Hollow particles are described in more detail below because of their preferred use. this,
The heat insulating sheet 12 in which the hollow particles 11 are dispersed in a polymer matrix can be used alone or by being attached to an object requiring heat insulation, etc., but preferably, the low moisture permeable sheets 13 and 13 ′ are provided on one or both surfaces. The heat insulating composite sheet 10 or 10 'for a building member in which the heat insulating sheet 12 is laminated may be used to protect the heat insulating sheet 12 and suppress moisture absorption.

The surface of the heat-insulating sheet constituting the heat-insulating composite sheet for building components may be substantially flat, or may be partially formed, for example, within 30% of the thickness from the surface. Among those having irregularities, the following structures are preferred for those having a special surface shape because of their high durability, especially compression resistance. FIG.
(A) shows an example of a heat insulating composite sheet for a building component having such a special shape.
When the heat insulating layer 12 is formed thereon, the net 14 is utilized, and the heat insulating layer 12 is formed in a convex shape in the mesh of the net 14. When the mesh is square, when viewed from the top, a large number of mutually independent, square pillar-shaped heat insulating layers are arranged at intervals of the thickness of the yarn. It is not limited to those of the eyes. In this type of heat-insulating composite sheet for building components, the heat-insulating layer 12 may have a structure without the mesh 14 and no low-moisture-permeable sheet 13. However, as described below, the heat-insulating layer 12 is formed by a coating method. Since a sheet to be applied at the time of application is required, it is preferable to provide a low moisture permeable sheet 13 and, if necessary, 13 ', as shown in FIGS. 1 (a) and 1 (b). Easy to make.

FIG. 2B shows a low moisture permeable sheet 1 on both sides.
3 and 13 ′ are shown for a heat insulating composite sheet 10a ′ for building components. FIG. 2 (c) is a view for explaining a method of manufacturing a heat insulating composite sheet for building members in which a large number of such independent columnar heat insulating layers are laminated, and a coating composition in which hollow particles are dispersed. When applying 12 ′ on the low moisture permeable sheet 13, a portion where the coating composition is applied more (in the mesh) and a portion where the coating composition is less or not applied (using the mesh 14) 2a), and then dried and solidified into the shape shown in FIG. 2 (a), using an adhesive, or using the coating composition 12 'as an adhesive to obtain another low A moisture permeable sheet 13 'is stuck on the heat insulating layer 12 to obtain the shape shown in FIG.

When the heat-insulating layer formed on the substrate to be applied is peeled off and used, the coating is performed not on the low moisture-permeable sheet 13 but on a peelable sheet, and after drying and solidifying, It is good to peel off. The net is applied on the low-moisture-permeable sheet 13 before application, temporary adhesion or adhesion, and application, or before application, and before the applied coating composition is dried. A method of placing a net in the area may be used. Also, the coating may be performed once or may be performed two or more times.
Further, if the coating composition is scraped off with a squeegee or a spatula after the coating, the coating composition is maintained at a constant level.

As the net 14, a net made of various fibers and metal wires can be used. However, if a net having a property of repelling the coating composition is used, the formed columnar heat-insulating layer and the net adhere to each other. Since the coating composition is difficult to apply, the coating composition applied in the mesh of the network and dried and solidified expands the bubbles mixed during the stirring of the coating composition, so that a heat insulating layer higher than the height of the mesh can be formed. The net can be peeled off, but if the net is left, the net becomes resistant to compression when an external force compressing the heat insulating layer 12 is applied. There is an advantage that the heat insulation can be prevented from being reduced by crushing. As the net having the property of repelling the coating composition, for example, when the coating composition is an aqueous coating composition, a net made of hydrophobic fibers may be used.

The hollow particles used in the heat insulating sheet 12 of the heat insulating composite sheet for building members according to the present invention as shown in FIGS. 1 and 2 include acrylic resins such as acryl and acrylonitrile, and polystyrene resins. Organic resins using a synthetic resin as a raw material and inorganic ones containing silica, alumina or the like as a main component. Natural products such as volcanic shirasu balloons can also be used. Further, hydrophilic or hydrophobic hollow particles described later can also be used. Generally available and available hollow particles have a particle size of 0.3
３００300 μm.
Use two or more types.

The hollow particles are relatively strong and can withstand external forces such as compression. However, when the hollow particles are dispersed in a synthetic resin coating composition, particularly in a synthetic resin emulsion-based coating composition, the hollow particles need to be dispersed. Since air bubbles enter into the heat insulating sheet 12, the air bubbles are intentionally generated in order to improve the heat insulating property. Alternatively, bubbles may be generated by foaming using a chemical foaming agent such as a microcapsule type or a decomposition type. However, the bubbles obtained in this way are weak and crushed when a compressive force is applied, so if the heat-insulating layers are pillar-shaped independent of each other, use a mesh to prevent the crushing. How to do that. However, in the case of general almost flat or embossed ones, without special consideration, a heat insulating sheet was prepared using hollow particles dispersed in a synthetic resin coating composition. When used, the tendency of heat insulation to decrease over time due to collapse of bubbles and hollow particles cannot be avoided. FIG. 3A shows a structure in a heat insulating sheet when hollow particles having a certain particle size are dispersed. Bubbles 15 having a shape close to a sphere surrounded by hollow particles have compression resistance. Although high, the flat-shaped bubbles 16 have low compression resistance and are easily crushed.

In order to improve the compression resistance when using hollow particles, in the present invention, it is preferable to select hollow particles by the following three methods. (1) Blend of hollow particles having different particle diameters (2) Blend of hydrophilic hollow particles and hydrophobic hollow particles (3) Blend of hydrophilic hollow particles and hydrophobic hollow particles having different particle diameters

In order to fill small hollow particles between large hollow particles by blending hollow particles having different particle diameters in (1), the relationship between the diameter a of the larger hollow particles and the diameter b of the smaller hollow particles is as follows. ^{is, b ≧ a (2-3 1/2)} / 3 ^1/2, calculating this, it is b ≧ 0.155a. In the case of body-centered cubic, which is the sparsest filling, b = a (2-2
^1/2 ) / 2 ^1/2 , and when this is calculated, b = 0.4
14a. Therefore, 0.155a ≦ b ≦ 0.414
a, and the diameter b of the hollow particles to be blended with the hollow particles having the particle size a is defined. By the way, in the case of the densest hexagonal close packing, in order for the hollow particles having the diameter b to just enter the voids of the hollow particles having the diameter a without any gap, b = 2a
(11/3) ^1/2 / 3, calculating this, b =
0.277a. As described above, the available particle diameter of the hollow particles is in the range of 0.3 to 300 μm, and a combination of large and small hollow particles satisfying the above relationship is selected from these and used.

In the above, the relationship between the number N (a) of particles per unit of the hollow particles having a diameter a and the number N (b) of voids accommodated by the hollow particles having a diameter b is as follows.
(B) / N (a) = 8: 6. In the case of body-centered cubic, N
(B) / N (a) = 4: 2. To sort this out,
1/2 ≦ N (a) / N (b) ≦ 3/4, and the weight ratio at the time of blending the hollow particles of each diameter is determined by the number of hollow particles after determining the degree of packing density. The ratio is calculated from the specific gravity and particle size of each hollow particle.

The heat-insulating sheet prepared by blending the hollow particles (1) having different particle diameters under the above-mentioned conditions and dispersing them in a polymer matrix is shown in FIG.
A bubble 17 having a shape as shown in FIG.
The same as the bubble 16 shown in FIG. In the case of), the hollow particles having a smaller diameter on the inner side are filled and reinforced between the hollow particles having a larger diameter, so that the compression resistance is enhanced and the structure is less likely to be crushed.

In the blend of (2) the hydrophilic hollow particles and the hydrophobic hollow particles, as shown in FIG. 3 (c), the hydrophobic hollow particles 18 have a higher affinity for air. ,
Hydrophobic hollow particles 18 surround air bubbles 20 taken into the coating composition at the time of dispersion to form secondary particles having hydrophobic outside, and are formed between hydrophilic hollow particles 19 and hydrophilic resin. It becomes a heat insulating sheet in a form dispersed in a sheet.

The hydrophilic hollow particles are made of glass, silica, silica / alumina, ceramic, shirasu, hollow plastic, hollow fiber, or the like. Some particles have been subjected to a hydrophobic treatment. The mixing ratio between the hydrophilic hollow particles and the hydrophobic hollow particles is determined by calculation from the size of the bubbles to be formed, the particle diameter of each hollow particle, and the specific gravity. These hydrophilic hollow particles and hydrophobic hollow particles are preferably added to and dispersed in an aqueous solution or an aqueous emulsion of a resin such as an emulsion, and preferably stirred under conditions such that air bubbles enter to form a coating composition. A low heat-permeable sheet or a temporary substrate is applied, dried and solidified to obtain a heat insulating sheet.

The blend of (3) the hydrophilic hollow particles and the hydrophobic hollow particles having different particle diameters is a combination of the above-mentioned means (1) and (2).
As shown in (d), air bubbles 21 are interposed between hollow particles in which hydrophobic particles having a small particle size and hollow particles having a large particle size are mixed.
Is obtained. In this method, since hydrophobic particles having a small particle size are filled between hollow particles having a large particle size, bubbles 2 formed between the hollow particles are formed.
Thus, a heat insulating sheet having a structure in which the first wall is strengthened and which is not easily crushed is obtained.

As described above, the above-mentioned heat insulating sheet 1
0 (there are various types, hereinafter, represented by reference numeral 10) can be provided with heat insulation by attaching it to an object requiring heat insulation as it is, but it can be used for a long time. However, when used in a place where people or objects are likely to come into contact, the strength is weak, and there is a lot of risk of breakage and impairing heat insulation. For this reason, it is preferable to cover the heat insulating sheet 12 with an appropriate sheet, and as the sheet to be covered, it is preferable to use a low moisture permeable sheet 13 that does not allow moisture to pass in consideration of the application. When the low moisture permeable sheets 13 and 13 ′ are laminated on both sides of the heat insulating sheet 12, the ends of the low moisture permeable sheets 13 and 13 ′ are heat-sealed or bonded to each other to form the heat insulating sheet. It is preferable to seal 12 with two low-moisture-permeable sheets 13 and 13 'because moisture can be prevented from entering from the end face.

The low moisture permeable sheet 13 suppresses or substantially eliminates moisture permeability to the adjacent heat insulating sheet 12.
The heat insulating sheet 12 prevents the heat insulating sheet 12 itself from absorbing moisture or the like, thereby preventing the heat insulating property from being lowered. The low moisture permeable sheet 13 may be laminated only on one side of the heat insulating sheet 12 or laminated on both sides. In the case where the low moisture permeable sheet 13 is laminated only on one side, there is a concern that the degree of moisture absorption is large. When using in the case of or when it is expected that an external force will be applied, the orientation should be taken into consideration so that the non-laminated side of the low moisture permeable sheet 13 is the target side to which the heat insulating property is to be imparted. Is preferred. Lamination of the low moisture permeable sheet 13 and the heat insulating sheet 12 is performed by using an adhesive or by heat sealing. Wet sheet 13
When sealing the end faces of each other, use a low moisture permeable sheet 1
3 and the heat insulating sheet 12 may not be bonded.
In general, even if the low moisture permeable sheet 13 is laminated, the end surface of the heat insulating sheet 12 is exposed to the air, so that when moisture absorption from the end surface becomes a problem, the resin coating composition is applied to the end surface. It is preferable to seal by applying or melting the material with a flame.

As a material of the low moisture permeable sheet 13, for example, a plastic film is preferable. As the plastic, a polyethylene resin, a polypropylene resin, a polymethylpentene resin, a polyvinyl chloride resin, a polyvinylidene chloride resin, a polyvinyl alcohol resin, Vinyl chloride-vinyl acetate copolymer resin, ethylene-vinyl acetate copolymer resin, ethylene-vinyl alcohol copolymer resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyethylene naphthalate-isophthalate copolymer resin, polymethyl methacrylate resin, Polyamide resin represented by polyethyl methacrylate resin, polybutyl acrylate resin, nylon 6 or nylon 66,
Examples include cellulose triacetate resin, cellophane, polystyrene resin, polycarbonate resin, polyarylate resin, and polyimide resin.

The low moisture permeable sheet 13 is coated with another coating composition prepared using a resin binder such as polyvinylidene chloride resin having low moisture permeability, or by forming a thin film of metal or metal oxide. It is good to suppress gas permeation.
In these metal thin films, a mixture of metal oxides having different oxidation numbers such as silicon monoxide and silicon dioxide, a mixture of a silicon compound and aluminum oxide, or a mixture mainly composed of an inorganic oxide may be used. May be bonded to an organic group. As a method of forming a thin film, for example, ion beam method, vacuum evaporation method such as electron beam method, or physical vapor deposition method such as sputtering method, or plasma chemical vapor deposition method, thermochemical vapor deposition method,
Alternatively, a chemical vapor deposition method such as a photochemical vapor deposition method can be used. The thickness of the thin film is preferably 50-3000 °, more preferably 100-1000 °. 50Å
If less than 30, there is almost no effect of suppressing gas permeation,
If the thickness exceeds 00 °, cracks may occur in the thin film and the gas permeability may be reduced, and the material cost is relatively high. Adhering the aluminum vapor-deposited film to the closed-cell foam sheet also has an effect of preventing the gas having a low thermal conductivity sealed in the closed cells from being replaced with air. Although slightly disadvantageous in terms of thermal conductivity, from the viewpoint of preventing the heat insulating sheet 21 from absorbing moisture, a metal foil is laminated or the same as the synthetic resin constituting the above synthetic resin sheet. It is also possible to form a coating film of a coating composition using a resin as a binder, and to use a low-humidity sheet.

On one side of the heat insulating layer 12, a low moisture permeable sheet 13
Are laminated, hollow particles for forming the heat-insulating layer 12, a resin liquid for forming the polymer matrix, and a foaming agent and other additives when the heat-insulating layer 12 is foamed. Using a coating composition obtained by dissolving or dispersing the composition, the composition is applied onto the low moisture permeable sheet 13 by an appropriate coating method, for example, a roll coating method, and then dried and solidified. When a foaming agent is contained, the foaming is performed by heating at a predetermined temperature. Alternatively, drying and solidification and heat foaming may be combined.

The low moisture permeable sheet 1 is provided on both sides of the heat insulating layer 12.
In order to produce a laminate of 3 and 13 ′, a coating composition similar to the above is applied to one of the low moisture permeable sheets 13, dried, solidified, and then used with an adhesive. One low moisture permeable sheet 13 ′ may be laminated,
After applying the same coating composition as described above on one of the low moisture permeable sheets 13, immediately or after drying, the applied coating composition is used as an adhesive, and another low moisture permeable sheet 13 'is used. May be stacked on the application surface, and if necessary, may be laminated by applying pressure while heating. After the lamination, the heat insulating layer 12 covered on both sides with the low moisture permeable sheet 13 and 13 'is dried if necessary, and then heated at a predetermined temperature to foam. Alternatively, drying and solidification before lamination and heat foaming may be combined.

Examples of the resin liquid for constituting the above-mentioned coating composition include nitrocellulose, cellulose acetate, cellulose butyrate, ethylcellulose, polyamide resin, chloride rubber, cyclized rubber, polyamide resin, polyvinyl chloride resin, and vinyl chloride. / Vinyl acetate copolymer resin, ethylene / vinyl acetate copolymer resin, organic solvent solution of thermoplastic resin such as chlorinated polypropylene or acrylic resin, urea resin, melamine resin, phenol resin, resorcinol resin, furan resin, epoxy resin, Unsaturated polyester resin, polyurethane resin, polyimide, polyamide imide, polybenzimidazole, resin solution of thermosetting resin such as polybenzothiazole or polyurethane resin dissolved in water or organic solvent, styrene male resin, polyvinyl acetate resin, Krill resin or urethane emulsion, or natural rubber, recycled rubber, sphthylene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, butyl rubber, polysulfide rubber, silicone rubber, polyurethane rubber, stereo rubber (synthetic natural rubber), Ethylene propylene rubber or block copolymer rubber (SBS, SIS, SEB)
S) or an organic solvent solution or latex. These can be used alone or as a mixture.

The foaming of the heat-insulating layer 12 is performed by mechanically introducing bubbles of a gas, particularly an inert gas, preferably a gas having a low thermal conductivity, into a coating composition, applying the foamed foam, and heating and foaming. In some cases, a chemical foaming agent composed of an organic compound as described in (1) is blended into a coating composition, applied and foamed by heating. The term "blowing agent" often refers to a chemical foaming agent, but here, the term "foaming agent" is used, including foam in a mechanical method, and any of them can be used. As the chemical blowing agent, azodicarbonamide, azobisisobutyronitrile, barium azodicarboxylate,
Or an azo blowing agent such as p-toluenesulfonyl semicarbazide; a sulfonyl hydrazide such as benzenesulfonyl hydrazide, p-toluenesulfonyl hydrazide, or 4,4′-oxybisbenzenesulfonyl hydrazide; a nitroso type such as dinitrosopentamethylenetetramine; There is sodium bicarbonate or ammonium bicarbonate. From the viewpoint of the action of the foaming agent, there is a microcapsule-type foaming agent in which low-boiling hydrocarbons such as isobutane and neopentane are encapsulated in the outer wall of acrylonitrile resin, which is similar to a mechanical gas bubble. Suitable for. When a chemical foaming agent is used, a foaming aid for lowering the foaming temperature to facilitate foaming may be used, if necessary. When foaming the heat-insulating layer 12 using these foaming agents, a coating composition for forming the heat-insulating layer 12 is applied, and the film thickness after drying is 0.1 to 100 times the film thickness. When the ratio is less than 0.1 times, the effect of improving the heat insulating property by foaming is poor. When the ratio exceeds 100 times, although the heat insulating property is provided, the strength of the heat insulating layer 12 is reduced, and the layer is easily crushed. In the heat insulating layer 12 of the heat insulating composite sheet for building component of the present invention, in addition to the hollow particles, a foaming agent is used in combination. It does not lower the heat insulation of the product. Also, since a foaming agent is used, the coating film expands due to foaming and becomes thicker.
There is an advantage that a sufficient thickness can be obtained. In addition, since the specific gravity of the hollow particles is light, it is difficult to disperse a large amount of the particles and it is difficult to form a coating material. Furthermore, when the hollow particles are dispersed in the paint in a large amount, they gelate and become sol when stirred, exhibiting the property of so-called thixotropic, but in order to reduce the number of hollow particles, the paint becomes easier to handle in terms of properties, There is an advantage that unstable elements in manufacturing are eliminated.

The heat-insulating composite sheet 10 for a building component of the present invention
Is laminated on the surface of the building component and is exposed to the outermost layer, as described later, and is desirably provided with some makeup (also referred to as decoration). There are various ways of applying makeup, but coloring, printing, embossing, or wiping painting is typical, and one or two of them can be arbitrarily selected from these.
More than one species may be applied in combination.

FIG. 4 shows the appearance of makeup.
(A) shows a state in which the heat insulating composite sheet 10 for a building component is colored. The coloring may be applied to the entire heat insulating sheet 10 in the thickness direction, or may be applied to only one surface on the observation side, as schematically shown in FIG. Further, although it may be merely colored, the protective layer 2
May be laminated. The lamination of the protective layer 2 is optional, and the description given with reference to FIGS. 4 (b) to 4 (d) is not repeated, but the same. FIG.
(B) shows a state in which a pattern is applied by printing on the heat insulating sheet 10. The pattern is composed of the colored layer 3a and the picture 3b, but the colored layer 3a may be omitted. FIG. 4 (c)
4 shows a state in which the embossing 4 is applied, and FIG. 4D shows a state in which the coloring agent 5 is filled in the portion of the embossing 4 by wiping painting.

The part to be decorated may be on either the front or back surface of the heat insulating composite sheet 10 for a building component, but if the face on which the decoration is made faces outward, or if not, Apply so that the makeup can be seen through the material. When covering the cosmetic with the protective layer 2, the protective layer 2 is desirably colorless and transparent or colored and transparent from the viewpoint of ensuring the transparency of the lower layer.

The protective layer 2 may be composed of a coating film of a synthetic resin coating composition, or may be composed of a laminated synthetic resin film in some cases. As the coating film of the synthetic resin coating composition, a coating film using a thermoplastic resin may be used, but a coating film obtained by curing a thermosetting resin such as a polyurethane resin is excellent in terms of durability. When the coating composition obtained by applying the ionizing radiation-curable resin composition prepared by using the polymer or the prepolymer and crosslinking and curing by irradiation of ionizing radiation, the protective effect of the lower layer is further improved.

The coloring is performed on the heat insulating composite sheet 10 for building components.
The material constituting one or both of the heat insulating sheet 12 and the low moisture permeable sheet 13 is colored in advance. Alternatively, the sheet is colored at the same time as the production of the material film, or after the sheet is formed, the sheet is colored by dyeing, painting, or the like. In addition, coloring is a pigment,
This is carried out by using a coating composition prepared by kneading a dye with a binder resin as required.

Printing is performed on the heat insulating composite sheet 10 for building components.
Heat-insulating composite sheet 10 for building parts
If the surface on the observation side has a concave-convex shape, there is a problem in performing clear printing on that surface. In such a case, the printing effect is improved by directly transferring the image instead of printing. If one side has no irregularities, it may be printed on the side without irregularities as long as it is printed there and viewed from the observation side. At the time of printing, only the pattern may be printed. However, in order to adjust the base color, a uniform colored layer 3a is formed before the pattern 3 is formed.
Print b. As the low moisture permeable sheet 13, it is common to use a flat surface, so that the low moisture permeable sheet 13 may be printed on the surface as long as the low moisture permeable sheet 13 is on the observation side. If so, printing on the back surface may be performed.

The emboss is usually formed by using a mold roll or by heating and pressing using a flat plate-like mold. Embossing can be performed on any of the laminated heat insulating composite sheet for building components 10, heat insulating sheet 12, or low moisture permeable sheet 13, and may be formed inside without forming irregularities on the surface. When there is a concern that the heat insulating sheet 12 may be crushed when the heat and pressure of the embossing are applied to the heat insulating sheet, it is preferable to perform the heat treatment at a shallow depth, but most of the heat insulating sheet has resilience. There are various embossed patterns, including wood grain, stone grain, cloth grain, and others.

After embossing, it may be left as it is,
Wiping painting can be performed to fill the recesses created by embossing with ink. The wiping paint itself,
The ink-like colorant 5 is applied to the embossed portion 4 and scraped off with a squeegee or the like, which can be easily performed and has an effect similar to that of printing. , More depth. The above-mentioned coloring, printing, embossing, wiping painting, etc. are performed in any combination, and the heat insulating composite sheet 1 for building materials is used.
In addition to the feeling of the material, it gives the appearance design.

The heat-insulating composite sheet 10 for building components according to the present invention
Can be used as a heat insulating material by sticking it to various building components. FIG. 5 shows that the heat-insulating composite sheet 10 for building members is laminated on one side of a thermally conductive panel 8-shaped building member in which the plate members 7 and 7 ′ are laminated on the front and back of the frame 6. The lamination may be performed with an adhesive or an adhesive, or may be performed by heat sealing, or by using an adhesive tape, a nail, a wire, or the like. For this reason, an adhesive is preferably applied to the insulating composite sheet 10 for building members in advance, and the same applies to another type of building member described with reference to FIG. The structure as shown in FIG. 5 can be used for doors, wall surfaces, ceiling surfaces, floor surfaces, or the like, or for cabinets or the like that require heat insulation, and can provide heat insulation to a certain extent.

FIG. 6 shows the surface of a heat-conductive extruded member 9 made of aluminum or the like and having one side surface of a hollow prism removed along the length direction and near the center with a constant width.
It is an example of a heat-insulating building member in which the heat-insulating composite sheet for building members 10 of the present invention is laminated. The shape of the extruded material 9 may be another shape. The lamination may be performed via an adhesive or an adhesive, but other methods can be used. However, in the case of a simple cylinder or a prism, the heat-insulating composite sheet 10 for a building component is made of a heat-shrinkable material, and is formed into a tube slightly thicker than the cylinder or the prism, covered, and heated. Thus, lamination without necessarily using an adhesive is also possible, and lamination methods other than these can be adopted. Although the structure shown in FIG. 6 depends on the use of the extruded material 9, it is used as a frame of a door, a frame for attaching a door, such as a pillar, a skirting board, a Kamoi, a sill, a sliding door or a hinged door. it can.

[0041]

EXAMPLES (Example 1 = Blend of hollow particles having different particle sizes) Biaxially stretched polyethylene terephthalate (= PE
T) 0.1 μm thick as a moisture-proof layer on one side of the resin film
m, three sets each of which is formed with an aluminum vapor-deposited layer, and one of the films in each set is printed on the aluminum vapor-deposited layer to form a pattern, and the other film is not formed with a pattern. The corona discharge treatment was performed on the surfaces of both films where the PET resin surfaces were exposed. As hollow particles having different particle sizes, (A) glass hollow particles having a particle size of 110 μm (manufactured by Laland Chemical Co., trade name: HGS-12);
(B) Glass hollow particles having a particle size of 40 μm (trade name: HGS-16, manufactured by Laland Chemical Co., Ltd.) were prepared, and an emulsion of an acrylic copolymer resin (ET-84, manufactured by Chuo Rika Kogyo Co., Ltd.) (A): hollow particles / resin = 21/21 (weight solids ratio), (B) hollow particles / resin = 21/21 (weight ratio), (A) / (B) ) /
Resins were added so as to be 7/14/21 (weight ratio) and mixed to form paints. The above-mentioned coating composition was applied to the corona-treated surface of the printed one of the films of each of the previously prepared films, and the laminate was laminated so that the corona-treated surface of the unprinted film was in contact with the film. Thereafter, drying was performed to obtain three types of heat insulating composite sheets for building components. After the coating composition was applied, the coating composition was once dried as it was, followed by lamination to obtain a similar heat insulating composite sheet for building components.

(Example 2 = Blend of hydrophilic hollow particles and hydrophobic hollow particles) As a binder, the same acrylic copolymer resin emulsion (ET-84, manufactured by Chuo Rika Kogyo Co., Ltd.) used in Example 1 was used. Got ready. As the hollow particles, (C) an acrylic-nitrile copolymer resin having a central particle size of 80 μm (having a distribution of 30 to 150 μm) which is hydrophilic (F-80ED, manufactured by Matsumoto Yushi Seiyaku Co., Ltd.); C) and hydrophobic porous spherical silica (manufactured by Suzuki Yushi Kogyo Co., Ltd.)
ET-84), (E) hydrophilic porous spherical silica (Suzuki Yushi Kogyo Co., Ltd., E16-475C), (F) hydrophobic porous spherical silica (Suzuki Yushi Kogyo Co., Ltd., AF-16C) and hydrophilic porous silica Spherical silica (Suzuki Yushi Kogyo Co., Ltd., E16-
475C) was used. Regarding (F), the mixing ratio was set to three. Others are the same as in Example 1, except that
After the application, the coating was dried at 80 ° C. for 25 minutes to obtain a heat insulating composite sheet for building components.

(Example 3 = Non-uniform heat insulating sheet) The same acrylic copolymer resin emulsion used in Example 1 was used as a binder, and as hollow particles, plastic hollow particles having a particle diameter of 6 to 9 µm ( After being made into a paint using Expancel 551DU20 manufactured by Nippon Philite Co., and applied on a 188 μm-thick PET film,
After a 0.4 mm-thick cloth (manufactured by Unitika Ltd., trade name: Micro Art) was overlaid on the application surface, application was performed again, and the composition was scraped off with a squeegee to remove excess paint composition on the cloth. After air drying at room temperature for 15 minutes,
Heating was performed for 1 minute and 30 seconds in an oven at 120 ° C. to obtain a heat insulating composite sheet for building components.

(Example 4 = heat insulating sheet containing hollow particles and a foaming agent) The following materials were prepared. Hollow particles: the same acryl-nitrile copolymer resin as used in Example 2 having a center particle size of 80 μm (with a distribution of 30 μm)
１５０150 μm) (Matsumoto Yushi Seiyaku Co., Ltd., F
-80ED) foaming agent; microcapsule-type foaming agent (manufactured by Matsumoto Yushi Kabushiki Kaisha,
F-84, n-pentane is encapsulated in the outer wall of allylonitrile resin) Resin liquid; same acrylic copolymer resin emulsion used in Example 1 The above hollow particles, foaming agent, and resin liquid are mixed with hollow particles /
The foaming agent / resin liquid was mixed at a weight / solid content ratio of 3/5/3, mixed and dispersed to form a paint. The obtained paint was applied and laminated in the same manner as in Example 1,
However, the thickness of the coating film was set to 0.3 mm. The laminated product was once heated and dried in an oven at a temperature of 100 ° C. for 1 minute, and then heated and foamed in an oven at a temperature of 170 ° C. for 1 minute. Was obtained.

The evaluation method of the heat insulating property of the obtained heat insulating composite sheet for building materials was as follows. A box-shaped boat made of an aluminum plate having a thickness of 1 mm is prepared, and a heat insulating composite sheet for a building member of the sample obtained in the above example is attached to a part of the bottom of the boat with a double-sided adhesive tape. Under an environment of (25 ° C.), the boat was floated in a water tank containing ice water. After floating, 3
After 0 minutes, when the temperature is in equilibrium, measure the surface temperature of the insulating composite sheet for building materials and the temperature of the exposed bottom plate of the boat, and determine the difference between the two temperatures. The results obtained as differences are shown in “Table 1” (Example 1), “Table 2” (Examples 2 and 3), and “Table 3”. "Table 1"
In the items of medium and temperature difference, “initial” and “after pressure application” indicate the temperature difference when the obtained sheet is used as it is as “initial”, and the obtained sheet has a diameter of 6 mm. 15g / mm ²
The pressure measured after applying the pressure for 1 minute is indicated as “after pressure application”.

[0046]

[Table 1]

[0047]

[Table 2]

[0048]

[Table 3]

[0049]

According to the first aspect of the present invention, since hollow particles having different particle sizes are dispersed, it is possible to provide a heat insulating composite sheet for a building member having a heat insulating sheet having a structure that is less likely to be crushed. According to the second aspect of the present invention, it is possible to provide a heat insulating composite sheet for a building component having a high heat insulating property because it has the same effect as the first aspect of the present invention and easily takes in bubbles. According to the third aspect of the present invention, there is provided a heat-insulating sheet having a structure in which hollow particles having different particle diameters are combined with each other to fill hollow particles having a small particle diameter between hollow particles having a large particle diameter, thereby enhancing the structure. A heat insulating composite sheet for a building component can be provided. According to the invention of claim 4, it is possible to provide a heat insulating composite sheet for a building member having hollow particles and having heat insulating properties and being hard to be crushed. According to the fifth aspect of the present invention, in addition to the effects of any one of the first to fifth aspects of the present invention, the presence of air bubbles realizes an improvement in the heat insulation provided by the air bubbles in addition to the heat insulation provided by the hollow particles. A heat insulating composite sheet for a building component can be provided. According to the invention of claim 6, in addition to the effect of the invention of claim 5, it is possible to provide a heat-insulating composite sheet for a building component in which the weight and the resistance to crushing are balanced. According to the invention of claim 7, in addition to the effect of the invention of claim 5, it is possible to obtain a heat insulating composite sheet for building members in which the size of the bubbles is uniform and the performance is less varied. According to the invention of claim 8,
In addition to the effect of the invention of claim 5, since the thermal conductivity inside the air bubbles is low, a heat insulating composite sheet for building members having higher heat insulating property can be provided. According to the ninth aspect of the present invention, in addition to the effects of any one of the first to eighth aspects, it is possible to provide a heat insulating composite sheet for a building component capable of protecting the heat insulating sheet and suppressing moisture absorption. According to the tenth aspect, in addition to the effects of any one of the first to eighth aspects, it is possible to provide a heat insulating composite sheet for a building member in which protection of a heat insulating sheet and suppression of moisture absorption are more reliable. According to the invention of claim 11, in addition to the effects of any of the inventions of claims 1 to 10, the makeup is applied to the heat insulating composite sheet for building materials, so that even if it is used for a part that is visible, Is unlikely to cause discomfort between the building materials. According to the twelfth aspect, in addition to the effects of the eleventh aspect, it is possible to provide a heat insulating composite sheet for a building material, which has been subjected to makeup by an established and stable technique. According to the thirteenth aspect, in addition to the effects of the eleventh aspect or the twelfth aspect, since the decorative surface has a protective layer, the makeup is prevented from being worn, contaminated, and damaged. A heat insulating composite sheet for a packaging member can be provided. it can. According to the invention of Claims 14 to 16, since a foaming agent is used in combination, it is possible to provide a heat insulating composite sheet for a building component without a decrease in heat insulating property even if the hollow particles are reduced, and the coating film expands by foaming. A sufficient thickness can be obtained with a small number of application times of about 1 even without performing several coatings, and it is difficult to disperse due to the low specific gravity of the hollow particles and a large amount of the hollow particles are dispersed in the paint. Since the gelation at the time of hardening is less likely to occur, the production is easy. Claim 1
According to the invention of the seventh aspect, the heat insulating composite sheet for a building component according to any one of the first to thirteenth aspects is applied to a plate or a panel-like material among the building materials to improve their heat insulating properties. And a heat-insulating building component can be provided. According to the invention of claim 18, by applying the heat insulating composite sheet for building material to the extruded material, it is possible to provide a building member having improved heat insulating properties.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a heat insulating composite sheet for a covering material.

FIG. 2 is a cross-sectional view of another heat insulating composite sheet for building materials.

FIG. 3 is a schematic view showing a cross section of the structure of the heat insulating sheet.

FIG. 4 is a cross-sectional view showing an aspect of makeup.

FIG. 5 is a cross-sectional view of a state in which the panel is stacked.

FIG. 6 is a cross-sectional view of a state where the components are stacked on an extrusion die.

[Explanation of symbols]

 2 Protective layer 3 Printing 4 Emboss 5 Colorant 6 Frame 7 Plate 8 Panel 9 Extruded material 10 Heat-insulating composite sheet for building materials 11 Hollow particles 12 Heat-insulating sheet 13 Low moisture-permeable sheet 14 Net

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Koji Sato 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Seiwa Takeshita 1-chome, Ichigaya-cho, Shinjuku-ku, Tokyo No. 1-1 Inside Dai Nippon Printing Co., Ltd. (72) Inventor Motohiro Oka 1-1-1, Ichigaya Kagacho, Shinjuku-ku, Tokyo Inside (72) Inventor Yumi Yokoyama Ichigaya-Kagacho, Shinjuku-ku, Tokyo 1-1-1 Dai Nippon Printing Co., Ltd. (72) Inventor Daisaku Hanone 1-1-1, Ichigaya Kagacho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. 2E001 DD01 GA03 GA06 GA23 GA24 GA32 GA82 GA85 HB04 HD11 HD13 JA06 JA14 JA28 JD02 LA04 LA05 4F100 AB10 AG00 AK01A AK25 AK42 AT00A AT00B AT00C AT00D BA03 BA04 BA08 BA10B BA10C BA10D CA01A DE04A DJ05A EA061 EH462 EJ022 GB 07 HB00 HB21 HB31 JB05A JB06A JD04B JD04C JJ01 JJ01D JJ02 JJ02A JK05

Claims (18)

[Claims] 1. A heat-insulating sheet having a low-moisture-permeable sheet laminated on at least one surface thereof, wherein the heat-insulating sheet is formed by dispersing different hollow particles having different particle sizes in a polymer matrix. A heat insulating composite sheet for building components. 2. A low moisture permeable sheet is laminated on at least one side of the heat insulating sheet, and the heat insulating sheet is composed of different hollow particles composed of hydrophilic hollow particles and hydrophobic hollow particles dispersed in a polymer matrix. A heat-insulating composite sheet for building components, characterized in that: 3. The hollow particles have different particle diameters, and the different particle diameters a and b are 0.155a ≦ b ≦ 0.414a, and the number N (a) of particles having a diameter of a and b are different from each other. The ratio of the number of particles having a diameter to N (b) is ≦≦ N (a) / N
3. The heat-insulating composite sheet for a building component according to claim 1, wherein (b) ≦ 3/4. 4. A heat insulating sheet, wherein a low moisture permeable sheet is laminated on at least one surface of the heat insulating sheet, wherein the heat insulating sheet is formed by dispersing hollow particles in a polymer matrix. Insulating composite sheet. 5. The heat-insulating composite sheet for a building member according to claim 1, wherein the heat-insulating sheet further contains a large number of air bubbles. 6. The diameter of the bubble is 0.1 to less than the diameter of the hollow particle.
The heat-insulating composite sheet for a building component according to claim 5, wherein the ratio is 100 times. 7. The heat-insulating composite sheet for a building component according to claim 5, wherein the air bubbles are formed by expanding a microcapsule type foaming agent. 8. The heat-insulating composite sheet for a building component according to claim 5, wherein the air bubbles are formed by expanding a low heat conductive gas. 9. The heat-insulating composite sheet for a building component according to claim 1, wherein a low-moisture-permeable sheet is laminated on one surface of the heat-insulating sheet. 10. The heat insulating composite sheet according to claim 1, wherein a low moisture permeable sheet is laminated on both sides of the heat insulating sheet. 11. The heat-insulating composite sheet for a building component according to claim 1, wherein makeup is applied. 12. The heat-insulating composite sheet for a building component according to claim 11, wherein makeup is applied by at least one of coloring, printing, embossing, and wiping coating. 13. The heat insulating composite sheet for a building component according to claim 11, further comprising a protective layer for protecting makeup. 14. A step of applying a coating composition prepared by dispersing hollow particles and a foaming agent in a resin liquid constituting a polymer matrix on a low moisture permeable sheet, followed by a drying step and a heating step. A method for producing a heat insulating composite sheet for a building component, comprising performing a foaming step. 15. A step of applying a coating composition prepared by dispersing hollow particles and a foaming agent in a resin liquid constituting a polymer matrix on a low moisture permeable sheet, followed by a drying step and heat foaming A method for producing a heat-insulating composite sheet for a building component, comprising performing a step and a step of laminating another low moisture-permeable sheet on a coating composition application surface. 16. A step of applying a coating composition prepared by dispersing hollow particles and a foaming agent in a resin liquid constituting a polymer matrix, and then performing a drying step and a heat foaming step. A heat insulating composite sheet for building components, wherein a low moisture permeable sheet is laminated on at least one side of the heat insulating sheet to be obtained. 17. A heat-insulating building member wherein the heat-insulating composite sheet for a building member according to any one of claims 1 to 13 is laminated on a plate or panel made of a heat conductive material. 18. A heat-insulating building member, characterized in that the heat-insulating composite sheet for a building member according to any one of claims 1 to 13 is laminated on an extruded member made of a heat conductive material.