JP2000314187A - Thermal storage sheet for building finish member, and thermal storage building finish member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impart thermal storage property and thermal insulation property and to make it difficult to transfer outdoor low temperature to the inside by using a thermal storage sheet for a building finish member which is obtained by laminating a thermal insulating layer on a thermal storage layer which has a thermal storage material dispersed in a polymer matrix. SOLUTION: A thermal storage sheet 10 for a building finish member includes a thermal storage layer 11 obtained by dispersing a thermal storage material in a polymer matrix. The thermal storage sheet 10 for the building finish member has a thermal insulating layer 12 such as a foamed layer laminated thereon, and prevents emission of heat stored by the thermal storage layer 11. Further, a moisture permeable sheet is laminated on the thermal storage sheet 10, and therefore it suppresses moisture permeation to the adjacent thermal storage layer 11 and the thermal insulating layer 12, to thereby prevent degradation of the thermal insulation property. The thermal storage sheet 10 is used as a laminated sheet such as one stuck to the surface of the building finish member, and therefore it is preferably decorated. The thermal storage sheet 10 has the thermal storage material dispersed therein, and therefore it stores heat at elevated temperatures and emits heat at lowered temperatures. As a result, transfer of outdoor low temperature to the interior of a room can be temporarily alleviated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a building component, and imparts heat storage and, preferably, further heat insulation to the surface thereof, thereby improving the heat storage or the heat insulation of the building component. TECHNICAL FIELD The present invention relates to a heat storage sheet for a building member capable of being used and a heat storage building member to which the heat storage 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, in recent years, not only seasonal heating and cooling but also many homes equipped with equipment that maintains a comfortable living environment throughout the year and 24 hours have increased, and energy consumption for cooling and heating has increased. As a result, the energy efficiency of buildings is being 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, windows, etc. are not as well insulated as walls. Especially in Japan, except north of Tohoku,
Since it is located in a relatively warm climate zone, sufficient sunlight can be obtained throughout the year, and a structure that is advantageous for ventilation in the summer is traditionally used, compared to major European and American countries with low winter temperatures. Therefore, it is common to take a lot of openings.

[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, moisture in the air in the room is condensed on the surface of the aluminum building member, and in extreme cases, adheres as water droplets and eventually runs down. If aluminum is replaced with iron, it becomes somewhat difficult to conduct heat, but it is not a poor conductor of heat and 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]

Therefore, in the present invention, the space between the front and back of a heat-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. Therefore, it is intended to minimize the conduction of heat, in particular, the transmission of low temperature of outside air to the inside of a building without suppressing the transmission of heat.

[0007]

Accordingly, the present inventors examined various materials related to heat and found that the above-mentioned problems could be solved by forming a heat storage material into a sheet and applying it to a building component. Based on this, the present invention has been reached.

[0008] The first invention relates to a heat storage sheet for a building component, wherein the heat storage material comprises a heat storage layer dispersed in a polymer matrix. The second invention relates to a heat storage sheet for building members, wherein a heat insulating layer is laminated on one or both sides of a heat storage layer in which a heat storage material is dispersed in a polymer matrix. . A third invention relates to a heat storage sheet for a building member, wherein a low moisture permeable sheet is further laminated on one or both surfaces of the heat storage sheet for a building member according to claim 1 or 2. It is. The fourth invention is
The present invention relates to a heat storage sheet for a building component, wherein a heat storage layer in which a heat storage material is dispersed in a polymer matrix is laminated on a base material. The fifth invention relates to the heat storage sheet for building members according to the fourth invention, wherein the base material is a backing paper for wallpaper.
The sixth invention relates to a heat storage sheet for a building component, wherein a heat storage layer in which a heat storage material is dispersed in a polymer matrix is impregnated in an impregnating base material. A seventh invention is directed to the heat storage sheet for building members according to the sixth invention, wherein the impregnating substrate is any one of a fibrous substrate of fiber, woven fabric, nonwoven fabric, or paper. It is. The eighth invention relates to the heat storage sheet for building members according to any one of the first to seventh inventions, wherein the polymer matrix has low thermal conductivity. A ninth invention relates to the heat storage sheet for a building component, wherein the heat storage material is any of a sensible heat type, a latent heat type, and a chemical reaction type in any of the first to seventh inventions. A tenth invention relates to the heat storage sheet for building members according to the ninth invention, wherein the heat storage material is a microcapsule type. An eleventh invention relates to a heat storage sheet for a building component, according to any one of the first to tenth inventions, wherein two or more kinds of different heat radiation temperatures are used in combination as a heat storage material. . The twelfth invention is directed to the heat storage sheet for a building component, in which the makeup is applied according to any one of the first to tenth inventions. According to a thirteenth aspect, in the twelfth aspect, coloring, printing, embossing,
Also, the present invention relates to a heat storage sheet for a building component, which has been subjected to makeup by at least one of wiping painting. A fourteenth invention is the twelfth or thirteenth invention.
In any one of the inventions described above, the present invention relates to a heat storage sheet for a building component further provided with a protective layer for protecting makeup. A fifteenth invention is directed to a plate made of a thermally conductive material,
Alternatively, the present invention relates to a heat storage building member, wherein the heat storage sheet for a building member according to any one of claims 1 to 14 is laminated on a panel. A sixteenth aspect of the present invention relates to a heat storage building member, wherein the heat storage sheet for a building member according to any one of claims 1 to 14 is laminated on an extruded member made of a heat conductive material. is there.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a heat storage sheet 10 for a building component according to the present invention comprises at least a heat storage layer 11 in which a heat storage material is dispersed in a polymer matrix. (FIG. 1A). The heat storage layer 11 constituting the building material heat storage sheet 10 may be a single layer when the heat storage material is a single component or a multi-component, but may be a single layer when mixed and used, as described below. 2 heat storage materials
When composed of components, the dispersed heat storage material may be in the form of a laminate of two different layers 11a and 11b (FIG. 1 (b) 10 '). In the case of three or more components, the layer may be further increased. In addition, the heat storage sheet 10 for building components may have a heat insulating layer 12 such as a foam layer laminated on one side in order to prevent wasteful release of the heat stored in the heat storage layer 11 (see FIG. 1 (c) 10 ″), and heat insulating layers 12 and 12 ′ may be laminated on both surfaces (FIG. 1 (d) 10 ″ ″).

The heat storage sheets 10, 1 for building components described above
0 ′, 10 ″, and 10 ″ ″ have heat storage properties (the sheets 10 ″ and 10 ″ ″ have heat storage properties and heat insulation properties. In the following description, for simplicity, other materials may be used). These are also represented by reference numeral 10 including the embodiment).
As shown in (a) or (b), the low moisture permeable sheet 13 may be laminated on one side, or the low moisture permeable sheets 13 and 13 'may be laminated on both sides. FIG.
FIG. 1A shows a case where the low moisture permeable sheet 13 is applied to only one side, and the heat storage sheet 10 for a building component comprises a heat storage layer 11 and a heat insulating layer 12 as shown in FIG. When having, the low moisture permeable sheet 13 can be applied to either the heat storage layer 11 side or the heat insulating layer 12 side. However, in a case where the heat-supply is supplied from one side and the heat is released from the same side, it is preferable to laminate the low moisture-permeable sheet 13 on the heat-insulating layer 12 side.

The heat storage material which is a component of the heat storage layer refers to a material which can temporarily store heat energy in another energy form and return it to the original heat energy as needed. Things. Depending on how energy is stored in the heat storage material, (1) sensible heat type,
There are three types: (2) latent heat type and (3) chemical energy type.

In the sensible heat type (1), heat is transferred to water or sand.
To heat storage materials such as
(Sensible heat). Simple operation principle and operation
Despite its advantages, it saves heat and is thermally isolated from the outside world
Need to be performed, and if heat storage is
Is used when heat is easy to escape and you want to increase the amount of stored heat
Requires a heat storage material having a large volume. Sensible heat storage
Thermal materials are roughly divided into liquid and solid materials.
Include water, organic heating media, liquid metals, or molten salts
Yes, solids include metals or non-metals. this
Of these, diphenyl ether, ter
Phenyl or other, and the liquid metal
Thorium, or sodium alloy, potassium, or potassium
There is a lithium alloy, and among the solid ones, the metal is steel ingot,
Or others, but non-metals include firebricks, crushed stone, sand,
There is gravel, or other. As the molten salt, NaNO
_Three-KNO_Three-NaNO_Two, NaOH-KOH, KCl
-LiCl-NaCl, KCl-LiCl, NaCl-
MgCl, MgCl _Two-KCl, KCl-NaCl-N
aCl_Two, KF-LiF, NaCl-CaCl_Two,Also
Is NaCl-KCl.

The latent heat type (2) stores heat in the form of latent heat such as heat of fusion and heat of vaporization due to a phase change (solid phase / liquid phase / gas phase) of a molten salt or an organic heat storage material. Compared to the sensible heat type,
A large volume of heat energy can be stored in a small volume. Also,
There is an advantage that the temperature at the time of extracting heat from the heat storage material is constant. As latent heat type heat storage materials, there are approximately three types of eutectic alloys utilizing eutectic latent heat, in addition to simple salts or mixed salts. Examples of simple salts include LiOH, NaOH, and LiOH.
F, or others, and the mixed salt is LiH / L
There are iOH, NaNO ₃ / NaOH, eutectic mixture of chloride and carbonate, or others. Other latent heat storage materials include hydrates of various salts and organic substances.The main latent heat storage material in the low-temperature region suitable for the heat storage sheet for building components is sodium sulfate. Decahydrate, calcium chloride hexahydrate, sodium acetate, paraffinic hydrocarbons and the like are preferred.

The chemical energy type (3) is converted into chemical energy or temperature difference energy by utilizing endothermic or exothermic heat accompanying a reversible thermal decomposition reaction of a carbonate or a hydroxide. Store heat. Compared to the above (1) and (2), it is said that a larger amount of heat energy can be stored in a smaller volume, and there is a possibility of long-term heat storage. Chemical energy type heat storage materials include substances that cause a thermal decomposition reaction in the solid phase or liquid phase and metal hydrides. Examples of the solid phase materials include Mg (OH) ₂ , Ca
(OH) ₂ , MgCO ₃ , CaCO ₃ , BaO ₂ , and others, and the liquid phase is H ₂ SO ₄ .H
_{There are 2} O, CH ₄ + H ₂ O, and others, and the metal hydride is MgH ₂ , TiH ₂ , ZrH ₂ , LaH
₃ , LaNi ₅ H ₆ , or others.

The above-mentioned heat storage material is made into a sheet form by an appropriate method such as impregnating or coating an appropriate base material, and is applied to a material requiring heat insulation to store the transferred heat. It releases the stored heat and consequently alleviates the large temperature gradient caused by the lack of heat insulation. Considering long-term use by sticking to building components, it is better that the heat storage material is covered with an appropriate binder than if it is exposed as it is. There is an advantage that a binder can be used as a means for fixing to a substrate. Therefore, it is preferable that the heat storage material is dispersed in the polymer matrix (including a case where not all of the heat storage material is dispersed but a part or all of the heat storage material is dissolved).

Many heat storage materials are liquid. In this case, if they are microencapsulated, handling becomes easy,
preferable. As a method of microencapsulation, general methods such as interfacial polymerization method, spray drying method, in
A situ polymerization method, a curing in liquid coating method, or the like can be used. The size of the microcapsules is 1-3
The material for the outer wall of the capsule can be a natural resin such as polystyrene, polyacrylonitrile, polyamide, polyoxymethylene urea, polyurethane, phenol, gelatin, or gum arabic.

Depending on the heat storage material, even if the material is cooled to a temperature lower than the melting point, crystallization does not proceed, and heat is not released, and a problem of supercooling may occur. This tendency is particularly large in latent heat type heat storage materials. In order to prevent overcooling and stably exhibit heat storage performance, various additives such as a supercooling inhibitor, a melting point regulator, a freezing point regulator, and a phase separation inhibitor may be added. Examples of the supercooling inhibitor include calcium salts such as calcium carbonate, calcium phosphate or calcium sulfate, organic salts of long-chain fatty acids such as calcium stearate or calcium palmitate, and layered silicates such as montmorillonite, hectorite, vermiculite or talc. Or zeolite can be used. As the melting point modifier, an ammonium salt such as ammonium chloride, a sodium salt such as sodium chloride, sodium bromide, or sodium succinate, or ethylene glycol can be used. Examples of the phase separation inhibitor include sepiolite, silver iodide, copper sulfide, hydrophobic silica, hydrogel, a water-soluble polymer having a carboxy group (for example, sodium carboxymethylcellulose), or a water-insoluble water-absorbent resin (for example, Crosslinked polyacrylic acid salt or starch graft polymer)
Can be used

Furthermore, by using two or more kinds of heat storage materials having different heat radiation temperatures in combination, it is possible to set the temperature to be maintained in a chain, and to cope with the difference between summer and winter environments. It is possible. For example, by mixing two types of heat storage materials, one having a melting point of 25 to 30 ° C. for summer and one having a melting point of 10 to 20 ° C. for winter, the temperature set according to the season can be as low as possible. It can be kept for a long time, which in turn saves energy required for cooling and heating. Further, depending on the region, a more suitable heat storage material can be used as a heat storage agent having a melting point different from those of these heat storage materials.

Resins for constituting the polymer matrix include rosin-modified maleic resin, nitrocellulose resin, cellulose acetate resin, cellulose acetate butyrate resin,
Ethyl cellulose resin, polyamide resin, chlorinated polypropylene resin, polyvinyl chloride resin, vinyl chloride / vinyl acetate copolymer resin, ethylene / vinyl acetate copolymer resin,
Acrylic resin such as ethylene / ethyl acrylate copolymer resin, polymethyl methacrylate, polyurethane resin, styrene / maleic acid copolymer resin, polyvinyl acetate resin, polyvinyl alcohol resin, polyvinyl acetal (polyvinyl formal, polyvinyl butyral, etc.) resin, Cyanoacrylate resin, polyvinylalkylether resin, epoxy resin, polystyrene resin, urea resin, melamine resin, phenolic resin, resorcinol resin, furan resin, epoxy resin, unsaturated polyester resin, polyurethane resin, polyimide resin, polyamideimide resin, polybenz Examples include an imidazole resin and a polybenzothiazole resin. Alternatively, natural rubber, recycled rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, butyl rubber, polysulfide rubber, silicone rubber, polyurethane rubber, stereo rubber (synthetic natural rubber), ethylene propylene rubber, block copolymer rubber (SBS, SIS, SEB
S) can be used.

Preferably, the heat storage material is soluble or easily dispersible in the polymer matrix.
In the case of dispersing, a particle having a particle size that is easy to handle is preferably selected and added in a proportion of 10 to 500 parts by weight based on 100 parts by weight of the resin constituting the polymer matrix. When the heat storage material is composed of two components, it may be contained in the same layer, or may be contained in two adjacent layers.

In order to prepare the heat storage layer 11 in which the heat storage material is dispersed in the polymer matrix, the heat storage material, a resin for forming the polymer matrix, a solvent, an additive and the like are kneaded to prepare a paint. Then, the obtained paint is applied to an application target such as the low moisture permeable sheet 13 and then dried and solidified. Instead of applying to the low moisture permeable sheet 13 or the like, apply to the releasable surface of the releasable sheet to
1 and then peeling off the heat storage layer 11 from the peelable sheet, a single heat storage layer 11 without a base material can be manufactured. Alternatively, the heat storage layer 11 may be manufactured by a method in which a resin constituting the polymer matrix and the heat storage material are melt-mixed and extruded.

In addition to laminating the heat-storing layer 11 on the low-moisture-permeable sheet 13, the sheet is not necessarily a low-moisture-permeable sheet 13, but a sheet for other purposes is simply used as a base material, and the heat-storing layer 11 can be used in a stacked state.
A typical example is to use a backing paper for wallpaper and laminate the heat storage layer 11 thereon, which is usually obtained by using a backing paper for wallpaper subjected to a flame retardant treatment as a base material. The heat storage sheet for building components can be used as wallpaper, that is, it can be easily applied to the back surface of aqueous glue, can be applied to the surface of gypsum board or plywood, has dimensional stability, and has the required flame retardancy. Can be provided.

The heat storage layer 11 may be formed by coating the base material such as the low moisture permeable sheet 11 or the above-mentioned backing paper for wallpaper, or by using a paint or ink in which a heat storage material is dispersed in a polymer matrix. By applying the composition to an impregnating substrate, a heat storage sheet suitable for building components can be obtained. As the impregnating substrate, various papers, nonwoven fabrics, woven fabrics, or fibers can of course be applied, but even plastic films or plastic sheets are porous or contain a large amount of fillers. It is applicable because it has impregnating properties. Of the very thin boards, fiber-reinforced plastic boards and wood-based substrates can also be used. Steel wool obtained by processing metal into a fibrous shape can also be used. Various types of paper include thin paper, kraft paper, titanium paper, resin-impregnated paper, linter paper, paperboard,
Gypsum board base paper and Japanese paper can be used. As the fibers, inorganic fibers such as glass fiber, asbestos fiber, potassium titanate fiber, alumina fiber, silica fiber, or carbon fiber, or synthetic fibers such as polyester fiber or vinylon fiber can be used.

Further, the polymer matrix mentioned above is
By including bubbles, it may be low thermal conductivity,
In this way, the heat storage layer and the heat insulating layer can be combined, and as a general application mode of the foaming agent for enclosing the air bubbles, a gas, particularly an inert gas, preferably a low heat conductive material is used. There is a case where a foam of a gas having a nature is taken into the coating composition and applied and heated and foamed, or a case where a chemical foaming agent composed of an organic compound is blended in the coating composition and applied and heated and foamed. Here, the term "foaming agent" includes air or other gas bubbles in a mechanical method. As the chemical blowing agent, azodicarbonamide,
Azo-based blowing agents such as azobisisobutyronitrile, barium azodicarboxylate, or p-toluenesulfonyl semicarbazide, benzenesulfonylhydrazide, p-toluenesulfonylhydrazide, or 4,
There are sulfonyl hydrazides such as 4'-oxybisbenzenesulfonyl hydrazide, nitrosos such as dinitrosopentamethylenetetramine, sodium bicarbonate, and ammonium bicarbonate. When a chemical foaming agent is used, a foaming aid for lowering the foaming temperature to facilitate foaming may be used, if necessary.

From the viewpoint of the action of the foaming agent, there is a microcapsule-type foaming agent in which a volatile organic solvent is sealed in the outer wall of a synthetic resin capsule, which is close to a mechanical gas bubble. By heating for a short time at a relatively low temperature of 4 ° C., the diameter is 4 to 5 times and the volume is 50 to 1
It expands by a factor of 00, and has an average particle size of 5 to 30 μm before expansion. The outer wall of the microcapsule-type foaming agent is made of a copolymer resin such as vinylidene chloride, acrylonitrile, acrylate, methacrylate, and the like.
Neopentane, petroleum ether, hexane, low-boiling halogenated hydrocarbons, methylsilane and the like can be mentioned. When a microcapsule type foaming agent is used, a foaming agent which has been foamed in advance may be used. When using an unfoamed foaming agent, it is difficult to control the foaming temperature, and the heating time for foaming, and if the coating film thickness is not uniform, the foam unevenness increases due to foaming, and more than just the coating thickness unevenness. Use of a microcapsule-type foaming agent which has already been foamed has an advantage that the appearance at the time of finishing is more likely to be improved because remarkable unevenness in thickness occurs. In the low thermal conductive polymer matrix containing such air bubbles, a heat storage material is dispersed into a paint or ink and applied to a low moisture permeable sheet or other base material, or impregnated into an impregnable base material Thus, a heat storage layer can be formed.

The heat storage sheet 10 for a building component of the present invention comprises:
As already mentioned, it can be provided with heat insulation by pasting it on the object that needs heat insulation as it is, but it can be used for a long time or in a place where people or objects are easily in contact. , The strength is weak, and there is a possibility that it may be damaged and impair the heat insulation. For this reason, it is preferable to cover the heat insulating sheet 10 with an appropriate sheet, and as the sheet to be covered, it is preferable to use a low moisture permeable sheet 13 which does not allow moisture to pass in consideration of the application. In addition, low moisture permeable sheets 13 and 1 are provided on both sides of the heat storage sheet 10 for building components.
When 3 ′ is laminated, the end portions of the low moisture permeable sheets 13 and 13 ′ are heat-sealed or bonded to each other, and the heat insulating sheet 12 is attached to the two low moisture permeable sheets 13 and 13 ′.
It is preferable that the sealing be performed in order to prevent moisture from entering from the end face.

The low moisture permeable sheet 13 suppresses or substantially eliminates moisture permeation to the adjacent heat storage layer 11 or heat insulating layer 12, and the heat storage layer 11 or heat insulating layer 12 itself absorbs moisture. It is intended to prevent the heat insulating property from being lowered due to absorption or the like. The low moisture permeable sheet 13 may be laminated only on one side of the heat storage sheet for building component 10 or laminated on both sides. However, when laminated only on one side, there is a concern that the degree of moisture absorption is large. When using in an environment where there is, or when it is expected that external force will be applied,
It is preferable to apply the low moisture permeable sheet 13 in consideration of the orientation so that the side where the low moisture permeable sheet 13 is not laminated is the target side to be pasted. The lamination of the low moisture permeable sheet 13 and the heat storage layer 11 or the heat insulating layer 12 is performed by using an adhesive or by heat sealing. However, low moisture permeable sheets 13 and 13 ′ are arranged on both front and back surfaces of the heat storage sheet 10 for building components, and
When sealing the end faces of the low moisture permeable sheets 13 and 13 ′, the low moisture permeable sheet 13 and the heat storage sheet 10 for building members may not be bonded. In general, even if the low moisture permeable sheet 13 is laminated, the end surface of the heat storage sheet 10 for a building component is exposed to the air. The seal may be applied by applying a paint or melting the material with a flame.

As the material of the low moisture permeable sheets 13 and 13 ', for example, a plastic film is preferable, and as the plastic, polyethylene resin, polypropylene resin, polymethylene resin, polymethylpentene resin, polyvinyl chloride resin, polyvinylidene chloride Resin, 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, polyethyl methacrylate resin, polybutyl acrylate resin, polyamide resin represented by nylon 6 or nylon 66, cellulose triacetate resin,
Examples include cellophane, polystyrene resin, polycarbonate resin, polyarylate resin, and polyimide resin.

The low moisture-permeable sheet 13 is coated with another paint prepared using a resin binder such as polyvinylidene chloride resin having low moisture permeability, or is formed by forming a thin film of metal or metal oxide to form a gas-permeable sheet. Should be suppressed. 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 for forming a thin film, for example, a vacuum deposition method such as an ion beam method or an electron beam method, a physical vapor deposition method such as a sputtering method, a plasma chemical vapor deposition method, or a thermal chemical vapor deposition method Or a chemical vapor deposition method such as a photochemical vapor deposition method. The thickness of the thin film is
Preferably, it is 50-3000 °, more preferably 100-1000 °. If it is less than 50 °, there is almost no effect of suppressing gas permeation, and if it exceeds 3000 °, cracks may occur in the thin film and gas permeability may be reduced, and the material cost is relatively high. 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 paint using a resin as a binder and to replace the low humidity sheet.

The heat storage sheet 10 for a building component according to the present invention may have a heat insulating layer 12.
2 is made of a foamed resin, a resin made of a resin in which hollow particles are dispersed instead of air bubbles, a resin made of a resin in which hollow fibers are dispersed, or a fibrous material such as woven fabric, nonwoven fabric, paper, or felt. There are a sheet having a fine prism-shaped cross section, a sheet having countless minute projections on the surface, and a sheet in which a large number of low columnar bubbles are sealed between laminated films. The heat-insulating layer 12 and the heat-storing layer 11 described above are also effective when they are thicker, but depending on the application, thicker ones may hinder use.
In the case of applying to a relatively small area, the heat insulating layer 12,
The thickness of each of the heat storage layer 11 and the heat storage layer 11 is preferably about 10 to 200 μm, but may be larger if there is no restriction on the thickness.

The heat insulating sheet 10 for a building component according to the present invention comprises:
As will be described later, since it is laminated on the surface of the building component and is exposed to the outermost layer, it is desirable that some kind of makeup (or decoration) be applied. 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. 3 shows the appearance of makeup.
(A) shows the state where the heat insulating sheet 10 for building components was colored. The coloring may be applied to the entire heat insulating sheet 10 in the thickness direction, or may be applied only to 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. 3 (b) to 3 (d) is not repeated, but is 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. 3 (c)
3 shows a state in which the emboss 4 has been applied, and FIG. 3D shows a state in which the colorant 5 is filled in the portion of the emboss 4 by wiping painting.

The part to be applied with makeup may be on either the front or back surface of the heat insulating sheet 10 for a building component, but the face on which the makeup is applied faces outward, or if not, the material may be used. Apply so that the makeup can be seen through. 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 paint, or may be composed of a laminated synthetic resin film in some cases. As the coating film of the synthetic resin paint, a coating material 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. Alternatively, when the coating composition is formed by applying the ionizing radiation-curable resin composition prepared by using the prepolymer and crosslinking and curing by irradiation with ionizing radiation, the protective effect of the lower layer is further improved.

The coloring is performed by directly painting or impregnating the heat insulating sheet 10 for building components, or by coloring the material constituting one or both of the heat insulating sheet 12 and the low moisture permeable sheet 13 in advance. Keep it. 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. The coloring is performed using a coating composition prepared by kneading a pigment and a dye with a binder resin as required.

The printing may be performed on the heat insulating sheet 10 for a building member, but when the surface of the heat insulating sheet 10 for a building member on the observation side has an uneven shape, the printing is clearly performed on the surface. There is a hindrance to doing so. 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, but it is preferable to form the uniform colored layer 3a before printing the pattern 3b in order to adjust the base color. 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-shaped mold. The embossing can be performed on any of the laminated heat insulating sheet for building components 10, the heat storage layer 11, the heat insulating layer 12, or the low moisture permeable sheet 13; the emboss is not necessarily formed on the surface but formed inside. There is also. When heat and pressure of emboss are applied to the heat storage sheet 10 for building components,
When there is a concern that the heat storage sheet 10 for building components may be crushed, it is preferable to perform the operation at a shallower depth, but most of the heat insulating sheets have 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 coloring, printing, embossing, wiping painting, etc. are performed in any combination, and the heat insulating sheet 10 for building materials is
In addition to the feeling of the material, it gives a design of appearance.

The heat insulating sheet 10 for a building component of the present invention comprises:
It can be used as a heat insulating material by attaching it to various building components. FIG. 4 shows plate bodies 7 and 7 ′ on the front and back of frame 6.
This is an example in which a heat insulating sheet 10 for a building member is laminated on one side of a building member in the form of a thermally conductive panel 8 on which heat is stored or further heat-insulated. Or heat sealing, or adhesive tape,
You may fix with nails, wire, etc. For this reason, it is preferable to apply an adhesive to the heat insulating sheet 10 for building members in advance, and the same applies to another type of building member described with reference to FIG. When the heat storage sheet 10 for a building component includes the heat insulating layer 12, the heat storage sheet 10 is laminated so that the heat insulating layer 12 side faces the building member. This is the same in the following description using FIG. The structure as shown in FIG. 4 can be used for a door, a wall surface, a ceiling surface, a floor surface, or the like, or for a cabinet or the like that requires heat insulation, and can perform heat insulation to a certain extent.

FIG. 5 shows the surface of a heat-conductive extruded material 9 made of aluminum or the like and having one side surface of a hollow prism removed along the length direction and with a constant width near the center.
It is an example of a heat-insulating building member in which the heat storage sheet for building member 10 of the present invention is laminated. As the shape of the extruded material 9,
Others may be used. 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 sheet 10 for a building component is made of a heat-shrinkable material, and is formed and covered in a tube shape slightly larger than the cylinder or the prism.
By heating, lamination without necessarily using an adhesive is also possible, and lamination methods other than these can be adopted. In FIG. 5, the heat storage sheet 10 for building components is laminated on the entire surface of the extruded material.
In the case where the right half of the extruded material faces the outdoors and the left half faces the room, it is preferable to laminate only on the indoor side, or when only the right vertical surface bets radiation, the The heat storage sheet 10 for building components may be laminated on other portions except for the vertical surface. Although the structure shown in FIG. 5 depends on the use of the extrusion 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.

[0042]

EXAMPLES (Example 1) A coating material A was prepared by mixing 2 g of sea sand and 2 g of a styrene-acrylic copolymer emulsion (resin content: 50%). As a base material, two sheets of a 25 μm-thick biaxially stretched polyethene terephthalate (= PET) resin film having a 0.1 μm-thick aluminum vapor-deposited layer formed on one surface are prepared, and one of the PET resin film aluminum Printing was performed on the vapor deposition layer side (base material 1), and the other PET resin film was not printed (base material 2), and both films were subjected to corona discharge treatment on the exposed PET surface. A polyethylene foam sheet having a thickness of 1 mm and a foaming ratio of 30 times is adhered to an exposed surface of the printed PET resin of the base material 1 using an adhesive, and the coating material A is applied on the adhered and dried. 300μm thick
Was produced. Subsequently, the unprinted base material 2 was superimposed on the heat storage layer so that the exposed surface of the PET resin was in contact with the heat storage layer.
/ Cm ^{2 at} a temperature of 95 ° C.) to obtain a heat storage sheet (I).

(Example 2) 5 mol of NaOH was added to 1000
10 g of a solution dissolved in ³ cm ³ of water was mixed with 2 g of a styrene-acrylic copolymer emulsion (resin content: 50%) to prepare a paint B.
10 g of 5 mol of H dissolved in 1000 cm ³ of water
Was used instead of 10 g of a solution prepared by dissolving 5 mol of NaNO ₃ in 1000 cm ³ of water to prepare a coating material C. As the substrate, the same one as used in Example 1 was prepared,
1 mm thick on the PET resin exposed surface of the printed substrate 1,
A polyethylene foam sheet having an expansion ratio of 30 was bonded using an adhesive, and the above-mentioned paint B was applied on the bonded product and dried to form a layer having a thickness of 150 μm. Separately, the above-mentioned paint C was applied to the surface of the substrate 2 on which no printing was performed, and dried to form a layer having a thickness of 150 μm. Next, the obtained coated films were subjected to PE
What was superposed such that the exposed surfaces of the T resin were in contact with each other was heated and pressed under the same hot pressing means and conditions as in Example 1 to obtain a heat storage sheet (II).

Example 3 A heat storage sheet (III) was prepared in the same manner as in Example 1 except that paint D was prepared using 5 mol of CaCO ₃ instead of sea sand, and paint D was used. Obtained.

The method for evaluating the heat insulating property of the obtained heat insulating sheet for building materials was as follows. A box-shaped boat made of an aluminum plate having a thickness of 1 mm was prepared, and a heat insulating sheet for a building member of the sample obtained in the above example was 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 being floated for 30 minutes, the surface temperature of the heat insulating sheet for building materials and the temperature of the bottom plate of the exposed boat when the temperature is almost equilibrated are measured. Was determined as a temperature difference.
The temperature 8 hours after the start was also determined. The results are shown in "Table 1" and "Table 2," and in the graph of FIG. In Table 1 and Table 2, No. (Number) is common.

[0046]

[Table 1]

[0047]

[Table 2]

Example 4 As a heat storage agent, a paraffinic latent heat storage agent (pentadecane) having a phase transition point at about 10 ° C. was microencapsulated (capsule outer diameter: 4).
0 μm). 2 g of this heat storage agent, an aqueous solution of an acrylic resin as a binder resin (resin content 50%) 15
g and 2 g of hollow particles (Matsumoto Yushi Seiyaku Co., Ltd.) were mixed well to form an ink. The obtained ink was applied to a thickness of 188.
2 mm thick on one side of a biaxially stretched PET resin film of μm
Was coated using a wire bar, and dried in an oven at 80 ° C. to obtain a heat storage sheet (IV).

(Example 5) 4 g of the same heat storage agent as in Example 4 and 15 g of the same binder resin were mixed well to form an ink. After impregnating the obtained ink into a glass fiber nonwoven fabric (basis weight: 150 g / m ² ),
To obtain a heat storage sheet (V) having an impregnation amount (excluding the weight of the glass fiber nonwoven fabric as the base fabric) of 500 g / m ² at the time of drying.

The heat storage materials obtained in Examples 4 and 5 were measured in the same manner as the heat storage materials obtained in Examples 1 to 3 to obtain two heat storage materials and a reference material in Example 5 as a reference. FIG. 7 shows the results obtained by measuring the surface temperatures of three points of the same glass fiber nonwoven fabric alone for 3 hours and 30 minutes.

As shown in FIG. 7, the glass fiber non-woven fabric alone used as a reference showed a drastic decrease in the surface temperature after one hour had passed since the boat with the heat storage material stuck on ice water had passed. On the other hand, the surface temperature of the heat storage material obtained in Examples 4 and 5 drops to about 10 ° C., which is the phase transition temperature of pentadecane, in about 30 minutes, and then becomes substantially constant around this temperature. The temperature was maintained for 2 hours after the boat floated. After the holding, the temperature gradually decreased, and in the equilibrium state, the temperature became similar to that of the glass fiber nonwoven fabric. Therefore, by increasing the amount of the heat storage agent used, or by selecting and using a heat storage agent having a different phase transition temperature, the temperature can be maintained for a certain time at the temperature to be held or at a temperature higher than that. If the temperature drop portion is included, it is possible to maintain the temperature equal to or higher than the set temperature for a longer time, which is effective for applications such as preventing the temperature from dropping at night and preventing dew condensation.

Example 6 Two kinds of paraffinic heat storage agents A (hexadecane, melting point: about 18 ° C.) and paraffinic heat storage agents B (octadecane, melting point: about 28 ° C.) each having a melting point of microcapsules. (Each capsule outer diameter: 40 μm) was prepared. An aqueous solution of an ethylene-vinyl acetate copolymer resin as a binder resin (resin content: 4
5%) and 2 g of each of the heat storage agents A and B (therefore, a total of 4 g of the heat storage agents A and B) were mixed well to form an ink. The obtained ink is applied on a 50 μm-thick wallpaper backing paper so as to have a thickness of 1.5 mm, and dried in an oven to form a heat storage layer. We made a sexual wallpaper. Evaluation of the obtained heat storage wallpaper, by the same measuring means as in the evaluation method of the heat storage material obtained in Examples 1 to 3,
Stick the backing paper side to the boat using double-sided tape,
However, the water temperature in the water tank was raised from room temperature of 25 ° C. to 35 ° C., and then lowered to 5 ° C., and the temperature of the surface of the heat storage wallpaper was measured. In addition, the thing which omitted only the heat storage layer as a reference product was evaluated similarly. FIG. 8 shows the evaluation results.

As shown in FIG. 8, the surface temperature of the reference product having no heat storage layer changes in accordance with the change of the water temperature of the water tank, whereas that of the embodiment 6 has two types. The time for maintaining the temperature according to the melting point of the heat storage agent is long, and the temperature of the surface decreases more slowly than the reference product having no heat storage layer. Therefore, according to this embodiment, the effect of the temperature drop of the outside air can be suppressed from affecting the indoor space in winter, and the indoor temperature can be prevented from rising even in the summer when the outside air temperature increases. It helps to reduce the energy consumption required.

Example 7 A microencapsulated paraffin-based heat storage agent (pentadecane, melting point: about 10 ° C.) was prepared, and this microcapsule and phenol resin were mixed in a microcapsule / phenol resin = 1.
/ 2 (weight ratio), extrusion molding,
A heat storage sheet having a thickness of 5 mm was obtained. Evaluation was performed in Examples 1 to
The measurement was performed by the same measuring means as in the evaluation method of the heat storage material obtained in 3. In addition, a phenol resin sheet having the same thickness without a heat storage agent was prepared as a reference product and evaluated at the same time. The evaluation results are as shown in FIG.
Since the heat storage sheet of Example 7 has a time that is kept almost constant around the melting point of the heat storage agent of about 10 ° C., the temperature of the surface is slowed down. The surface temperature of the product changed substantially following the change of the water temperature of the water tank.

[0055]

According to the first aspect of the present invention, since the heat storage material is dispersed in the polymer matrix to form the heat storage layer, heat is stored when the environmental temperature is high, and the heat is stored when the environmental temperature is low. A heat storage sheet for a building component can be provided which can alleviate the transmission of low temperature of outside air into a room for a certain period of time when applied to a building component, for example, by releasing the stored heat. According to the second aspect of the invention, it has substantially the same effect as the first aspect of the invention, and further has the heat insulating layer, so that it has a high ability to hold the heat once stored, and has the heat insulating property. The provided heat storage sheet for building components can be provided.
According to the third aspect of the invention, in addition to the effects of the first or second aspect, the heat storage layer is provided on one side or both sides since the low moisture permeable sheet is provided on one side or both sides, or It is possible to provide a heat storage sheet for a building component having a property of suppressing or preventing moisture permeation to the heat insulating layer.
According to the invention of claim 4, since the heat storage layer is strengthened by accompanying the base material, the strength of the heat storage layer increases,
In addition, it is possible to provide a heat storage sheet for a building member that is easy to handle, such as being able to apply an adhesive to the base material when sticking it to another object. According to the fifth aspect of the present invention, since the heat storage layer is accompanied by the backing paper for wallpaper, it has the flameproof properties that commercial wallpaper should have, the application of glue during construction is easy, and the dimension is stable. Therefore, a heat storage sheet for a building component that can be easily used as wallpaper can be provided. According to the invention of claim 6, since the heat storage material is dispersed in the polymer matrix and the heat storage layer is impregnated in the impregnating base material, the heat storage layer is directly reinforced and the heat storage layer A heat storage sheet for building components with improved strength can be provided. According to the invention of claim 7, in addition to the effect of the invention of claim 6, since the substrate is a fibrous substrate,
A heat storage sheet for a building component can be provided in which the obtained sheet is flexible, and the heat storage property of the fiber material itself does not decrease much because of the heat insulation property of the fiber itself. According to the invention of claim 8, in addition to the effect of any one of the inventions of claims 1 to 7, the heat storage layer has a heat insulating property due to the low thermal conductivity of the polymer matrix, so that the heat retaining effect is higher. A heat storage sheet for a building component 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, a heat storage sheet for a building component provided with a heat storage layer tailored to the intended use by a specific heat storage material is provided. it can. According to the tenth aspect, in addition to the effect of the ninth aspect, since the heat storage agent is of a microcapsule type, it is possible to provide a heat storage sheet for a building component that is easy to handle during manufacture. According to the eleventh aspect, in addition to the effects of any one of the first to tenth aspects, since two or more types of heat storage materials having different heat radiation temperatures are provided, the temperature is maintained at the higher heat radiation temperature. After that, since the temperature can be maintained at a lower temperature, a heat storage sheet for a building component that can take a longer time until the temperature decreases can be provided. According to the invention of claim 12, claim 1
In addition to the effects of any one of the above-mentioned inventions, since the heat storage sheet for building materials is provided with a makeup, even if it is used for a part that is visible to the public, it is difficult for the building materials to feel uncomfortable with surrounding building materials. A heat storage sheet for a mounting member can be provided. According to the thirteenth aspect, in addition to the effects of the twelfth aspect, it is possible to provide a heat storage sheet for a building component, which is decorated by an established and stable technique. According to the fourteenth aspect, in addition to the effect of the twelfth aspect or the thirteenth aspect, since the decorative surface has the protective layer, the makeup can be prevented from being worn, contaminated, and damaged. A heat storage sheet for a member can be provided. According to the invention of claim 15, claims 1 to 14
The heat storage sheet for building material according to any one of the above can be applied to a plate or a panel-like building material to provide a heat storage building member with improved heat insulation. According to the invention of claim 16, by applying the heat-insulating sheet for building materials according to any one of claims 1 to 14 to the extruded material,
It is possible to provide a heat storage building material with improved heat insulation.

[Brief description of the drawings]

FIG. 1 is a sectional view of a heat insulating sheet for building materials.

FIG. 2 is a cross-sectional view of a heat insulating sheet for building materials with a low moisture permeable sheet.

FIG. 3 is a cross-sectional view showing a makeup mode.

FIG. 4 is a cross-sectional view of a state in which the panel is stacked.

FIG. 5 is a cross-sectional view of a state where the components are stacked on an extrusion material.

FIG. 6 is a graph showing evaluation results of Examples 1 to 3.

FIG. 7 is a graph showing evaluation results of Examples 4 and 5.

FIG. 8 is a graph showing evaluation results of Example 6.

FIG. 9 is a graph showing evaluation results of Example 7.

[Explanation of symbols]

 Reference Signs List 2 Protective layer 3 Printing 4 Emboss 5 Colorant 6 Frame 7 Plate 8 Panel 9 Extruded material 10 Heat insulating sheet for building components 11 Heat storage layer 12 Heat insulating layer 13 Low moisture permeable sheet

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Daisaku Hanane, Inventor Daisaku 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. No. 1 Inside Dai Nippon Printing Co., Ltd. (72) Inventor Seiwa Takeshita 1-1-1, Ichigaya Kagamachi, Shinjuku-ku, Tokyo (72) Inventor Motohiro Oka Ichigaya-cho, Shinjuku-ku, Tokyo 1-1-1 Dai Nippon Printing Co., Ltd. (72) Inventor Ryohei Nagata 1-1-1 Ichigaya Kagacho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. (reference) 2E001 DD01 DD17 FA03 FA11 FA14 GA23 GA24 GA42 GA44 HA03 HA32 HA33 HC07 HC11 HD11 HE00 LA04 LA12 LA16 4F100 AB10 AK01A AK04 AK12 AK12J AK25 AK25J AK42 AL01 AP00E AR00A AR00B AR00C AR00D AR00E AT00E BA02 BA03 BA05 BA07 B A08 CC00 DE04A DG01E DG10E DG11E DG15E DJ01 EJ82A EJ82E GB07 HB00E HB31E JD04D JD04E JJ01A JJ01E JJ02 JJ02B JJ02C JJ04 JJ06A JJ10 JJ10A JM01J

Claims (16)

[Claims] 1. A heat storage sheet for a building component, wherein the heat storage material comprises a heat storage layer dispersed in a polymer matrix. 2. A heat storage sheet for a building component, wherein a heat insulating layer is laminated on one or both sides of a heat storage layer in which a heat storage material is dispersed in a polymer matrix. 3. A heat storage sheet for a building member, wherein a low moisture permeable sheet is further laminated on one or both sides of the heat storage sheet for a building member according to claim 1. 4. A heat storage sheet for a building component, wherein a heat storage layer in which a heat storage material is dispersed in a polymer matrix is laminated on a substrate. 5. The heat storage sheet according to claim 4, wherein the base material is a backing paper for wallpaper. 6. A heat storage sheet for a building component, wherein a heat storage layer in which a heat storage material is dispersed in a polymer matrix is impregnated in an impregnating base material. 7. The heat storage sheet for a building component according to claim 6, wherein the impregnable substrate is any one of a fibrous substrate of a fiber, a woven fabric, a nonwoven fabric, and a paper. 8. The heat storage sheet for building components according to claim 1, wherein the polymer matrix has low thermal conductivity. 9. The heat storage sheet for a building component according to claim 1, wherein the heat storage material is one of a sensible heat type, a latent heat type, and a chemical reaction type. 10. The heat storage sheet for a building member according to claim 9, wherein the heat storage material is a microcapsule type. 11. The heat storage sheet according to claim 1, wherein two or more kinds of heat storage materials having different heat radiation temperatures are used in combination. 12. The heat storage sheet for a building component according to claim 1, wherein makeup is applied. 13. The heat storage sheet for a building component according to claim 12, wherein makeup is applied by at least one of coloring, printing, embossing, and wiping painting. 14. The heat storage sheet for a building component according to claim 12, further comprising a protective layer for protecting makeup. 15. A heat storage building member, wherein the heat storage sheet for a building member according to claim 1 is laminated on a plate or panel made of a heat conductive material. 16. A heat-storing building member, wherein the heat-storing sheet for a building member according to any one of claims 1 to 14 is laminated on an extruded member made of a heat conductive material.