JPH08284275A - Heat insulation interior material - Google Patents

Abstract

PURPOSE: To provide a heat insulation interior material simple in structure and excellent in a heat insulation property and capable of efficiently using indoor atmosphere. CONSTITUTION: A heat insulation interior material 10 is constituted by making indium-tin oxide into a film of about 1000Å by a magnetron sputter method on a surface of a polyvinyl chloride wall paper 12. An indium-tin oxide thin film 14 formed on the surface of the polyvinyl chloride wall paper 12 works as a thermal reflecting layer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-insulating interior material used in the interior of a building, and more particularly to a heat-insulating interior material having a simple structure and excellent heat insulation.

[0002]

2. Description of the Related Art Heretofore, an aggregate of fibrous materials such as various resin foams and glass fibers has been widely used as a heat insulating material used in the interior of a building. In many cases, these were used alone due to their low thermal conductivity.

On the other hand, in order to improve heating efficiency, double glazing in which a layer of dry air is provided between two glass plates is used for the window glass in the cold district inside. This takes advantage of the low thermal conductivity of the dry air layer.

In order to reduce the thermal conductivity, a method of providing a layer having a small void is generally used. Therefore, the foaming rate is increased by using a foam or the thermal conductivity of the clad layer of the foam is reduced. In order to do so, it has been attempted to increase the bulk specific gravity, but these have limitations.

[0005] These are constructed for the purpose of blocking the influence of the outside air, and they are still insufficient in terms of efficiently utilizing warm or cool indoor air and heat from cooling and heating.

[0006]

Therefore, a heat insulating interior material having a simple structure and a high heat insulating effect has been desired. That is, an object of the present invention is to provide a heat-insulating interior material having a simple structure and excellent in heat-insulating property that can efficiently use the atmosphere in the room.

[0007]

The present invention has been made in view of the above-mentioned problems, and the heat insulating interior material of the present invention is a heat insulating interior material used in the interior of a building, comprising: A heat reflecting layer is included, and the heat reflecting layer is provided on the outermost surface on the indoor side. The heat-insulating interior material according to claim 2 of the present invention is the heat-insulating interior material, wherein the heat reflection layer is made of a thin film of a metal or a metal compound. The heat-insulating interior material according to claim 3 of the present invention is the heat-insulating interior material, wherein the heat-reflecting layer comprises a coating thin film containing metal powder or metal compound powder.

[0008]

Since the heat-insulating interior material of the present invention has the heat-reflecting layer on the outermost surface on the indoor side, the warm or cool atmosphere due to cooling and heating in the room is reflected back into the room by the heat-reflecting layer. It is possible to efficiently utilize the heat of the heat, prevent the loss of the heat to the outside air, and prevent the conduction due to the radiation of the heat. Furthermore, since the heat-reflecting layer is composed of a thin film of metal or metal compound or a coating thin film containing metal powder or metal compound powder, a heat-reflecting layer having a high heat conduction preventing effect can be easily prepared and the thickness can be reduced. sell. Therefore, this interior material can efficiently use the indoor area and can be used in any place.

[0009]

EXAMPLES The heat insulating interior material of the present invention will be described in detail below with reference to examples. (Embodiment) FIG. 1 shows the heat insulating interior material 10 of the embodiment as an exterior material 1.
FIG. 6 is a cross-sectional view showing a part of the state of being attached to the surface of FIG. The heat-insulating interior material 10 is made of indium tin oxide on the surface of the polyvinyl chloride wallpaper 12 by magnetron sputtering.
The film is formed to a thickness of about 00Å. The indium tin oxide thin film 14 formed on the surface of the polyvinyl chloride wallpaper 12 is a heat reflection layer.

The obtained heat-insulating interior material 10 is used as an interior side of a room of 6 tatami mats with no opening, which is composed of a concrete outer wall material 16 having a thickness of 30 mm, with the indium tin oxide thin film 14 side being the interior side ( It was attached to a wall surface, floor surface, or ceiling) and an air conditioner was used to measure the time required to change the indoor temperature by 1 ° C. with the reference temperature set at 20 ° C.

As a control, a polyvinyl chloride wallpaper without forming an indium tin oxide thin film was used as a comparative example, and it was stuck inside the same room as the example and operated under the same conditions using the same air conditioner. Then, the same experiment was performed. Here, the shorter the time required to change the indoor temperature by 1 ° C., the better the heat insulating property was evaluated. The results are shown in Table 1 below.

[0012]

[Table 1]

As is clear from Table 1, in the room to which the heat-insulating interior material (Example) of the present invention is attached, the efficiency of both cooling and heating is improved in comparison with the room to which the control interior material (Comparative Example) is attached. I found out that

Next, the heat reflection layer used in the present invention will be described. The heat-reflecting layer is provided on the innermost outer surface of the interior material carrier such as wallpaper, which is a metal powder or a metal compound even if it is a thin film of a metal or a metal compound (hereinafter referred to as metals). It may be a coating thin film containing powder. For example, as the metal thin film, a metal thin film directly formed on the surface of the interior material; a metal foil such as an aluminum foil; a thin film layer of a metal or a metal compound on plastic or the like. Can be used, or a thin film layer formed by applying a matrix such as paint containing metal powder or metal compound powder can be used.

The metals forming these layers are not particularly limited, but those having a small infrared emissivity are preferably used. For example, metals such as aluminum, gold, silver, and copper, alloys containing the above metals as main components, alumina, aluminum hydroxide, beryllium oxide, zinc oxide, magnesium oxide, tin oxide, indium tin oxide, and other metal compounds, and A metal mixture containing these as main components is preferably used. Among them, indium tin oxide, zinc oxide, tin oxide and the like are preferable.

As a method of applying these metals, as described above, a thin metal film is formed on a support such as a plastic film by thinly processing the metal itself and pasting it as a metal foil on an interior material carrier such as wallpaper. Is deposited by a method such as vapor deposition or coating, a thin film of a metal is directly formed on the surface of the interior material carrier by a method such as vapor deposition or coating, or a metal in a trick such as an aqueous paint is formed on the surface of the interior material carrier. A mixture of powders of the same kind is applied and coated to form a heat reflection layer. The amount of the metal powder added to the paint may be, for example, 0.01 to 98% by weight in the water-based paint, and preferably about 5 to 70% by weight. From the viewpoint of heat insulation, the particle size of the metal powder is 0.
It is 1 μm to 5 mm, preferably about 1 to 500 μm.

The method for forming the metal or metal compound thin film is not particularly limited. For example, as a method for forming the metal thin film,
Wet plating method using plating solution such as electroplating method and electroless plating method, and dry plating such as vacuum deposition method, ion plating method, sputtering method, ion beam sputtering method and ECR (electron cyclotron resonance) plasma method. There is a law. In the present invention, it is sufficient that a metal thin film can be formed, and any of the above methods can be suitably adopted. Among these, the dry plating method is preferable because it has an advantage that the film thickness can be easily controlled and managed during thin film formation by an optical film thickness control method such as a λ / 4 control method. Further, as a method for forming a metal compound thin film, a method of forming a necessary compound by plasma spraying, high frequency sputtering, a vacuum deposition method, etc., and a reactive sputtering of forming a film by mixing a reactive gas at the time of forming a metal thin film Methods, ion plating methods, chemical vapor deposition methods (CVD) that cause a chemical reaction on a substrate, plasma CVD methods, and other reactive film formation methods. In the former method, an electron gun or high frequency discharge is used for film formation. In the latter case, particularly when performing the reactive sputtering method, a metal serving as a raw material of a metal compound to be obtained is set on a target. For example, in the case of an oxide film, a gas having an oxidizing property during film formation and sputtering Mix with gas to react. In this case, oxygen, ozone, air,
A substance having an oxygen atom such as water can be used, but it is not particularly limited. Also in the case of carbonization, those having carbon atoms such as hydrocarbon gas such as methane and ethane can be used, but not particularly limited. Similarly, helium, argon, or the like is used as the inert gas for sputtering, but the cheapest argon is generally used because it is industrially used. The oxidation degree and nitriding degree of the film can be controlled by changing the mixing ratio of these gases.

The thickness of the formed metal or metal compound layer is about 1 μm to 2 mm for the metal foil, about 5 nm to 10 μm for the metal thin film layer formed on the film, and the metal for the paint thin film layer mixed with metal powder. Depending on the amount of powder added, it may be about 0.1 μm to 5 mm, and 1 μm to 500 mm.
From the viewpoint of the effect, the thickness of about μm is preferable.

The type of metal, metal compound, and thickness of the layer for forming the heat-reflecting layer can be arbitrarily selected according to the site where the heat-insulating interior material is installed, as long as the object of the present invention is not impaired. . Since the heat-insulating interior material having the heat-reflecting layer of the present invention is formed by forming a thin heat-reflecting layer such as a metal thin film on the wallpaper, the entire thickness is thin, and the indoor area can be efficiently utilized, and It can be used on any place such as wall, ceiling, floor, etc. Further, since the heat reflection layer formed on the outermost surface on the indoor side is made of metal as a main material, it has a luster, and a favorable effect can be obtained in terms of decoration.

As the interior material carrier for supporting the heat reflection layer, it is preferable to use wallpaper, which is generally used synthetic resin such as polyvinyl chloride or paper as a main material, wallpaper made of woven cloth or non-woven cloth, and the like. You can

In the heat-insulating interior material of the present invention, a convection-preventing layer may be provided on the exterior material side of the interior material carrier such as wallpaper for the purpose of further improving the heat insulating effect within the range not impairing the effect of the present invention. it can. For the convection prevention layer, it is preferable to use a porous structure having a large number of small pores or a fiber lump having many voids between fibers. The porous structure has an open-air structure in which cells (small holes) communicate with each other, a closed-cell structure having cells surrounded by walls, and a mixture of these cells. Is mentioned. Among the porous structures, the maximum diameter of cells formed from the viewpoint of the effect of preventing convection is preferably in the range of 0.1 to 20 mm, more preferably in the range of 0.1 to 5 mm. It is preferable from the viewpoints of properties and strength. Also, the cell is 25m
It is preferable that 1 to 30 pieces are formed per m. 2
If the number exceeds 30 per 5 mm, the volume of each cell becomes small and the effectiveness of the heat reflection layer decreases, and if the number is less than 1, the strength and heat insulating properties decrease, which is not preferable. More preferably, it is 2 to 20 per 25 mm. The number of cells existing per unit distance is measured, for example, by taking a photograph of the porous structure, drawing a straight line corresponding to 25 mm, and visually counting the number of cells existing on the straight line. You can The measurement is performed at 10 points per sample, and the number average is taken as the number of cells. The number of cells of the porous structure can be controlled by changing the production conditions, for example, the compounding materials such as the catalyst and the foam stabilizer.

The material for forming the porous structure may be any material that can form an ordinary foam, that is, as long as it can contain a gas in the structure, for example, a polyurethane-based material, Polystyrene, polyethylene,
Resins such as polyolefin such as polypropylene, vinyl such as polyethylene vinyl acetate and polyvinyl chloride, polyester, polyamide, EPDM, vinylidene chloride, phenol, urea, silicone and the like can be used.

As the fiber lump, a lump lump represented by glass wool, in which short fibers are kept in a fibrous form or in a matte form, or fibers are entangled without using an adhesive and molded. Nonwoven fabrics are exemplified, and of these, low density ones are preferably used. Here, the low density means, for example, a specific gravity of 0.02 or less, or a porosity per unit area of 80 to 99.5%.

The fibers forming the fiber lumps are not particularly limited, but examples thereof include inorganic fibers such as glass fibers and organic synthetic fibers such as polyester, polypropylene and polyamide.

The thickness of the convection prevention layer is preferably 5 mm or less from the viewpoint of space utilization efficiency, and is 0.5 to 0.5.
More preferably, it is 3 mm. If the thickness exceeds 5 mm, the thickness of the heat insulating interior material as a whole becomes thicker and the efficiency of space utilization decreases, which is not preferable.

In the heat-insulating interior material of the present invention, if necessary, a heat reflection layer and a carrier or a carrier and a convection prevention layer,
Can be joined via an adhesive layer. The adhesive constituting this adhesive layer is not particularly limited, for example, polyvinyl chloride adhesive, polyvinyl butyral adhesive layer,
Cyanoacrylate adhesive layer, unsaturated polyester-styrene monomer adhesive, epoxy resin adhesive, phenol resin adhesive, phenolic-nitrile rubber adhesive, vinyl-nitrile rubber adhesive, polychloroprene adhesive, etc. Is mentioned.

[0027]

The heat-insulating interior material of the present invention has the above-mentioned structure, so that it has a simple structure and can effectively use the atmosphere in the room, and has an excellent heat insulating property.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a part of a heat insulating interior material of an example.

[Explanation of symbols]

 10 Thermal Insulation Interior Material 12 Interior Material Carrier (Wallpaper) 14 Heat Reflection Layer (Indium Tin Oxide Thin Film) 16 Exterior Material

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location E04F 13/08 D21H 5/00 A

Claims (4)

[Claims] 1. A heat-insulating interior material used in the interior of a building, comprising an interior material carrier and a heat-reflecting layer, and having a heat-reflecting layer on the outermost surface on the indoor side. 2. The heat-insulating interior material according to claim 1, wherein the heat reflection layer is made of a thin film of a metal or a metal compound. 3. The heat-insulating interior material according to claim 1, wherein the heat reflection layer is made of a coating thin film containing metal powder or metal compound powder. 4. The heat-insulating interior material according to claim 2, wherein the metal or metal compound is selected from the group consisting of indium tin oxide, tin oxide and zinc oxide.