Heat storage laminate, building material and station building

Abstract

To provide a heat storage laminate which can decrease power consumption of an equipment housing building such as a communication base station and the like, can suppress temperature increase of control equipment even at a time of power outage, and can effectively suppress temperature increase of building interior, control equipment and the like due to external environment including sunlight.SOLUTION: Provided is a heat storage laminate comprising a heat storage surface material on at least one surface side of a metal surface material (A). Also provided is a heat storage laminate comprising: a heat insulation material on at least one surface of the metal surface material (A); and a heat storage surface material and a metal surface material (B) on the surface side composed by the heat insulation material.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a heat storage laminate material that can be suitably used as a wall material for buildings such as telecommunication stations. [Background technology]

[0002] 2. Description of the Related Art Equipment housing stations that house communication equipment, control equipment, etc. are used in communication base stations for mobile electronic terminals, for example.

[0003] The control devices and the like consume a lot of power and tend to generate heat, so that the temperature rise of the devices due to the heat generation may be controlled by providing, for example, a blower fan or installing a so-called air conditioner (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-66734 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, power is required to operate the above-mentioned blower fans, air conditioners, etc., which can increase the amount of power consumed by the communication base station. Also, when a power outage occurs, the blower fans, etc. stop, making it difficult to control the temperature rise of the communication equipment, etc.

[0006] Furthermore, the communication base stations and the like are usually installed outdoors and are often exposed to direct sunlight, etc. Therefore, in the summer, the temperature inside the base station rises due to the influence of the external environment, which can have an adverse effect on the control devices.

[0007] Therefore, the problem that the present invention aims to solve is to provide a heat storage laminate that can reduce the amount of power consumption in equipment-accommodating buildings such as communication base stations, suppress temperature increases in control equipment even in the event of a power outage, and effectively suppress temperature increases inside the building and in control equipment, etc. caused by external factors such as sunlight. [Means for solving the problem]

[0008] The present invention has solved the above problems by providing a heat storage laminate characterized by comprising a heat storage surface material on at least one side of a metal surface material (A).

[0009] The present invention also solves the above problem by providing a heat storage laminate comprising a heat insulating material on at least one side of a metal surface material (A), and a heat storage surface material and a metal surface material (B) on the side formed by the heat insulating material. [Effects of the Invention]

[0010] The heat storage laminate of the present invention can reduce the amount of power consumed by equipment-containing buildings such as communication base stations, suppress temperature increases in control equipment even during power outages, and effectively suppress temperature increases inside the building and in control equipment caused by external factors such as sunlight, and therefore can be used as wall materials or ceiling materials for equipment-containing buildings. DETAILED DESCRIPTION OF THE INVENTION

[0011] The heat storage laminate of the present invention is characterized in that it comprises a heat storage surface material on at least one side of a metal surface material (A). Specific embodiments include a heat storage laminate comprising a heat storage surface material on one side of a metal surface material (A), and such a heat storage laminate can be suitably used as a retrofit building component that is attached to an indoor surface (e.g., a wall, floor, ceiling, etc.) of an indoor space. By providing such a retrofit building component on a wall surface or the like of an indoor space, it is possible to suppress temperature increases in the indoor space and to reduce the power consumption of air conditioners and the like used to maintain a constant temperature in the indoor space.

[0012] The heat storage laminate of the present invention is characterized in that it comprises a heat insulating material on at least one side of a metal surface material (A), and a heat storage surface material and a metal surface material (B) on the side formed by the heat insulating material. The heat storage laminate of the present invention can be used exclusively as a building component. In particular, the heat storage laminate can be used as a wall material, ceiling material, or floor material for equipment housing buildings (also called shelters) that house communication equipment, control equipment, etc.

[0013] The heat storage laminate of the present invention can have, for example, a structure (1) or (2) in which a metal surface material (A), a heat insulating material, a heat storage surface material, and a metal surface material (B) are laminated in the order shown below. (Configuration 1) Metal surface material (A) / Heat insulating material / Heat storage surface material / Metal surface material (B) (Configuration 2) Metal surface material (A) / Heat insulating material / Metal surface material (B) / Heat storage surface material As the heat storage laminate of the present invention, it is preferable to use one having the above configuration (1), which can reduce the amount of power consumed by the equipment-accommodating building, suppress the temperature rise due to heat dissipation from the control equipment even in the event of a power outage, and effectively suppress the temperature rise inside the building and the control equipment, etc. due to external environments such as sunlight.

[0014] The heat storage laminates of the above-mentioned configurations 1 and 2 may have layers other than those described above. For example, a heat storage laminate having the configuration 2 may have a configuration of metal surface material (A) / insulating material / metal surface material (B) / heat storage surface material / metal surface material (C).

[0015] The heat storage laminate of the present invention may also have an adhesive layer for bonding the face materials together.

[0016] When the heat storage laminate is used as a building component, it is preferable to use it so that the metal surface material (B) side of the configuration 1 faces the indoor side, and it is preferable to use it so that the heat storage surface material side of the configuration 2 faces the indoor side, as this can reduce the amount of power consumption of the equipment-accommodating station building, suppress the temperature rise of the control equipment even in the event of a power outage, and effectively suppress the temperature rise inside the station building and the control equipment, etc. due to the external environment, including sunlight.

[0017] It is preferable to use the heat storage laminate having a total thickness in the range of 3 to 300 mm, and it is more preferable to use one in the range of 30 to 100 mm, because when used as a building component, this can reduce the amount of power consumed by the equipment housing building, suppress temperature rise in the control equipment even in the event of a power outage, and effectively suppress temperature rise inside the building and in the control equipment, etc. due to external factors such as sunlight.

[0018] The metal surface materials (A) and (B) can be, for example, steel plates, aluminum plates, stainless steel plates, etc. Among these, using aluminum plates as the metal surface materials (A) and (B) is preferable because it increases the thermal conductivity to the heat storage surface material, thereby reducing the power consumption of the equipment housing station building, suppressing the temperature rise of the control equipment even in the event of a power outage, and effectively suppressing the temperature rise inside the station building and the control equipment, etc., caused by the external environment, including sunlight.

[0019] The metal surface material (A) and metal surface material (B) constituting the heat storage laminate preferably have a thickness in the range of 0.1 to 5 mm, and it is more preferable to use a material in the range of 0.6 to 1.5 mm, because when used as a wall material, floor material, or ceiling material in the construction of buildings such as equipment housing buildings, the amount of power consumption of air conditioners used to cool the indoor space of buildings such as equipment housing buildings can be reduced, temperature rise in control equipment can be suppressed even in the event of a power outage, and temperature rise inside the building and control equipment, etc. due to external factors such as sunlight can be effectively suppressed.

[0020] The metal surface materials (A) and (B) may be of the same material and thickness, or may be of different material and thickness. In addition, when the optional metal surface material (C) is used, the metal surface material (C) may be of the same material and thickness as the metal surface materials (A) and (B).

[0021] The heat insulating material used in the present invention can be a heat insulating material that is generally installed between an exterior wall and an indoor wall surface, ceiling surface, or floor surface. Examples of the heat insulating material that can be used include fiber-based heat insulating materials such as glass wool, rock wool, and cellulose fiber, and heat insulating boards such as extruded polystyrene foam, bead-processed polystyrene foam, polyethylene foam, urethane foam, and phenolic foam. Among these, heat insulating boards are preferred because they are easy to install and have high thermal resistance.

[0022] The specific heat of the insulation material can be adjusted as needed, but it should be 5 to 100 kJ / m 3 ·K, and 10 to 50 kJ / m 3 It is more preferable that the temperature is within this range, since this makes it easier to achieve suitable heat insulation for various indoor surfaces.

[0023] The thermal resistance of the insulation material can be adjusted as needed, but it should be between 0.3 and 10 m 2 ·K / W is preferable, 1 to 8m 2 K / W is more preferable, and 2 to 6 m 2 It is more preferable that the thermal resistance is in the range of 0.5 K / W. The higher the thermal resistance, the better the thermal insulation performance can be achieved, but this requires that the thickness of the insulating material and the insulating space be increased, which reduces the volume of the indoor space. Therefore, it is preferable to set the range so that high thermal insulation performance can be achieved with a thin thickness.

[0024] The insulating material constituting the heat storage laminate preferably has a thickness in the range of 3 to 300 mm, and it is more preferable to use one in the range of 30 to 100 mm, since when used as a building component, it can reduce the power consumption of the equipment housing building, suppress the temperature rise of the control equipment even in the event of a power outage, and effectively suppress the temperature rise inside the building and the control equipment, etc. due to the external environment, including sunlight.

[0025] The heat storage surface material used in the present invention has a heat capacity of 30 to 3000 kJ / m at 15 to 35°C. 2 is preferably 50 to 1500 kJ / m2 More preferably, it is 70 to 800 kJ / m 2 More preferably, it is 100 to 500 kJ / m 2 By setting the heat capacity in this range, it becomes easier to obtain suitable heat insulation properties when combined with an inner wall surface material.

[0026] As the heat storage surface material, a sheet-like or plate-like heat storage surface material can be preferably used because it is easy to obtain processability, bending resistance, etc. Among them, it is preferable to use a heat storage sheet because it is easy to install and stack, and it is more preferable to use a heat storage sheet in which the heat storage material is dispersed in a resin matrix because it is easy to nail or drill holes after installation on the wall surface.

[0027] The thickness of the heat storage sheet can be adjusted appropriately depending on the usage mode, but it is preferably 0.3 to 15 mm, more preferably 0.5 to 10 mm, even more preferably 0.7 to 8 mm, and particularly preferably 1 to 5 mm, because this makes it easy to obtain suitable heat insulation while suppressing a decrease in the volume ratio of the indoor space, makes it less likely to crack or chip during processing or transportation, and makes it easy to achieve excellent processability and handling.

[0028] The heat storage sheet preferably has a tensile strength of 0.1 MPa or more, which allows it to have a flexible yet strong layer and is less likely to crack during processing or transport, making it easier to obtain favorable processability, handling, transportability, bending suitability, etc. The tensile strength is more preferably 0.3 MPa or more, even more preferably 0.6 MPa or more, and particularly preferably 1 MPa or more. There is no particular upper limit to the tensile strength, but it is preferably about 15 MPa or less, more preferably 10 MPa or less, and particularly preferably 5 MPa or less.

[0029] Furthermore, by setting the elongation at tensile break of the heat storage layer alone to 10% or more, embrittlement of the sheet can be suppressed, and cracks and chips are less likely to occur even when bending or distortion occurs during processing or transportation, etc., which is preferable. The elongation at tensile break is more preferably 15% or more, even more preferably 20% or more, and particularly preferably 25% or more. The upper limit of the elongation is preferably 1000% or less, more preferably 500% or less, and even more preferably 300% or less. By setting the elongation within this range, it is possible to achieve suitable flexibility while maintaining toughness, and it is easier to obtain good processability, handleability, transportability, bending suitability, etc. Tensile strength and elongation at tensile break are measured in accordance with JIS K6251.

[0030] Various resins such as thermoplastic resins, thermosetting resins, and UV-curable resins can be used for the resin matrix of the heat storage layer. Among these, thermoplastic resins are preferred because of their ease of film formation. Examples include vinyl chloride resins, acrylic resins, urethane resins, olefin resins, ethylene-vinyl acetate copolymers, styrene-butadiene resins, polystyrene resins, polybutadiene resins, polyester resins, polyamide resins, polyimide resins, polycarbonate resins, 1,2-polybutadiene resins, polycarbonate resins, and polyimide resins. Among these, vinyl chloride resins are preferred because of their ease of moldability at low temperatures and the dispersibility of the heat storage material.

[0031] When a vinyl chloride resin is used, it is preferable to form a sol-cast film using a vinyl sol coating liquid containing vinyl chloride resin particles, since this makes it possible to form a heat storage sheet at low temperatures. The vinyl sol coating liquid is a paste-like coating liquid in which a heat storage material is dispersed and suspended in a resin composition containing vinyl chloride resin particles and a plasticizer.

[0032] The heat storage material is not particularly limited as long as it has heat storage properties, and latent heat storage materials, sensible heat storage materials, and chemical reaction heat storage materials that utilize heat absorption or heat generation accompanying chemical reactions can be used. Among these, latent heat storage materials are preferred because they can easily secure a large amount of energy in a small volume and are easy to adjust the heat absorption and release temperature.

[0033] As a latent heat storage material (latent heat storage material), encapsulated heat storage particles in which a latent heat storage material such as paraffin is encapsulated in an outer shell made of an organic material are preferred, taking into consideration issues such as seepage during melting due to phase change and dispersibility during mixing. When heat storage particles having such an outer shell are used in the present invention, the HSP distance is calculated based on the HSP of the material used in the outer shell of the heat storage particles. Even when a heat storage layer used in the present invention uses a heat storage material containing a latent heat storage material such as paraffin in an outer shell made of an organic material, the shell is less likely to be embrittled by the plasticizer, and the heat storage material is less likely to be damaged.

[0034] Examples of such heat storage particles include those using an outer shell made of melamine resin such as Thermomemory FP-16, FP-25, FP-27, FP-31, and FP-39 manufactured by Mitsubishi Paper Mills, Ltd., and Riken Resin PMCD-15SP, 25SP, and 32SP manufactured by Miki Riken Kogyo Co., Ltd. Examples of those using an outer shell made of silica such as Riken Resin LA-15, LA-25, and LA-32 manufactured by Miki Riken Kogyo Co., Ltd., and those using an outer shell made of polymethyl methacrylate resin such as Micronal DS5001X and 5040X manufactured by BASF.

[0035] The particle size of the heat storage particles is not particularly limited, but is preferably approximately 10 to 1000 μm, and more preferably 50 to 500 μm. It is also preferable that the particle size of the heat storage particles be in the above-mentioned range for the primary particles, but it is also preferable that particles with a primary particle size of 1 to 50 μm, preferably 2 to 10 μm, aggregate to form secondary particles, and the particle size of these secondary particles is in the above-mentioned range. Such heat storage particles are prone to breakage due to pressure or shear, but the configuration of the present invention can suitably prevent breakage of the heat storage particles and reduce the risk of exudation or leakage of the heat storage material. In particular, when the outer shell is made of an organic material, there is a risk of breakage due to temperature, but the heat storage sheet of the present invention is likely to suitably prevent exudation or leakage of the heat storage material even when such a latent heat storage material is used. The particle size of all the heat storage particles used in the heat storage sheet does not have to be within the above range, and it is preferable that 80% by mass or more of the heat storage particles in the heat storage sheet are heat storage particles within the above range, more preferably 90% by mass or more, and particularly preferably 95% by mass or more.

[0036] A latent heat storage material undergoes a phase change at a specific melting point. That is, when room temperature exceeds the melting point, the phase changes from solid to liquid, and when room temperature drops below the melting point, the phase changes from liquid to solid. The melting point of the latent heat storage material can be adjusted depending on the mode of use, and materials that show a solid / liquid phase transition in a temperature range of about -30°C to 120°C can be used as appropriate.

[0037] Examples of types of latent heat storage materials include n-tetradecane, n-pentadecane, n-hexadecane, n-heptadecane, n-octadecane, n-eicosane, n-nonadecane, n-icosane, n-henicosane, n-docosane, n-tricosane, n-tetracosane, n-pentacosane, n-hexacosane, n-heptacosane, n-octacosane, n-nonacosane, n-triacontane, n-hentriacontane, n-dotriacontane, n-tritriacontane, octatriacontane, and paraffin. Paraffin compounds such as corn wax; fatty acids such as capric acid, caproic acid, caprylic acid, undecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, margaric acid, stearic acid, hydroxystearic acid, oleic acid, elaidic acid, linoleic acid, sebacic acid, crotonic acid, erucic acid, and nervonic acid, or methyl ester compounds or ethyl ester compounds of these fatty acids; stearyl alcohol, tetradecanol, dodecanol, xylitol, erythritol Alcohols such as ethanol and pentaerythritol; calcium chloride hydrate, sodium acetate hydrate, potassium acetate hydrate, sodium hydroxide hydrate, potassium hydroxide hydrate, strontium hydroxide hydrate, barium hydroxide hydrate, sodium chloride hydrate, magnesium chloride hydrate, zinc chloride hydrate, lithium nitrate hydrate, magnesium nitrate hydrate, calcium nitrate hydrate, aluminum nitrate hydrate, cadmium nitrate, iron nitrate hydrate, zinc nitrate hydrate, manganese nitrate hydrate, lithium sulfate hydrate, sulfuric acid Examples of inorganic hydrates include sodium hydrate, sodium thiosulfate hydrate, magnesium sulfate hydrate, calcium sulfate hydrate, potassium aluminum sulfate hydrate, aluminum ammonium sulfate hydrate, sodium thiosulfate hydrate, potassium phosphate hydrate, sodium phosphate hydrate, potassium hydrogen phosphate hydrate, sodium hydrogen phosphate hydrate, sodium borate hydrate, calcium bromide hydrate, potassium fluoride hydrate, sodium carbonate hydrate, calcium chloride hexahydrate, and sodium sulfate decahydrate.

[0038] The content of the heat storage material in the heat storage sheet is preferably 10 to 80 mass%, more preferably 20 to 70 mass%, and even more preferably 30 to 60 mass%. By setting it within this range, it becomes easier to adjust the tensile strength and elongation at tensile break within the ranges of the present invention, and it becomes easier to obtain good heat storage effect and moldability.

[0039] The heat storage sheet can be obtained by applying a coating liquid made of a resin composition containing a resin and a heat storage material, or by pouring it into a mold of any shape, and then heating and drying it. A preferred production example is a method in which a coating liquid made of a resin composition containing a resin and a heat storage material is prepared, the coating liquid is applied to a support to form a coating film, and then heating is performed at a temperature at which the coating film temperature becomes 150°C or less to form the heat storage sheet.

[0040] When the heat storage sheet is to be peeled off for distribution, use, etc., the support to be used can be one that allows the resulting heat storage sheet to be peeled off and has heat resistance at the temperature of the heating step. Alternatively, the heat storage sheet may be laminated on a support that is made of another functional layer such as a non-combustible layer such as non-combustible paper, a heat insulating layer, or a conductive layer.

[0041] As the support when peeling off the heat storage sheet, for example, a resin film used as various processing films can be preferably used. Examples of such resin films include polyester resin films such as polyethylene terephthalate resin film and polybutylene terephthalate resin film. The thickness of the resin film is not particularly limited, but those of about 25 to 100 μm are easy to handle and obtain.

[0042] The coating liquid for forming the heat storage sheet may be adjusted by mixing appropriately depending on the resin components and heat storage material used. For example, when vinyl chloride resin is used as the thermoplastic resin, a method of forming the heat storage layer by sol casting using a vinyl sol coating liquid containing vinyl chloride resin particles is preferred. This manufacturing method enables molding without kneading with a mixer or extrusion molding, etc., and is less likely to cause damage to the heat storage material, making it less likely for the heat storage material to bleed out from the resulting heat storage sheet. Furthermore, this method facilitates molding at low temperatures, making it particularly preferable because it is easy to suppress damage to the heat storage material due to heat.

[0043] The heat storage laminate of the present invention can be produced by bonding together the metal surface material (A), the heat storage surface material, and, if necessary, other materials using an adhesive.

[0044] The heat storage laminate of the present invention can be produced by bonding together the metal face material (A), the heat storage face material, the heat insulating material, the metal face material (B), and, if necessary, the metal face material (C), etc., using an adhesive. Therefore, the heat storage laminate of the present invention may have an adhesive layer between the face materials.

[0045] Examples of the lamination method include a press adhesion method, a dry lamination method, a wet lamination method, and a thermal lamination method.

[0046] The heat storage laminate of the present invention can be installed and used in an indoor surface structure that constitutes the indoor space of a pre-constructed building such as a station building, etc. Here, the indoor surface structure that constitutes the indoor space refers to structures that constitute the indoor space, such as indoor wall structures, ceiling structures, and floor structures, and the indoor surface material refers to surface materials that are provided on indoor surfaces, such as interior wall surface materials that constitute the indoor wall structure, ceiling surface materials that constitute the ceiling structure, and floor surface materials that constitute the floor.

[0047] For the indoor surface structure, a heat storage laminate equipped with a heat storage surface material can be attached to at least one side of the metal surface material (A) of the present invention. This reduces the amount of power consumed in the indoor space, and even in the event of a power outage, it is possible to suppress temperature increases in control devices present in the indoor space, and it is also possible to effectively suppress temperature increases in the indoor space and control devices due to external factors such as sunlight.

[0048] The thickness of the inner wall surface material is not particularly limited, but is preferably 3 to 20 mm, more preferably 5 to 15 mm, in order to easily obtain favorable workability and heat insulating performance.

[0049] The heat storage laminate of the present invention can also be used as a wall material, ceiling material, or floor material used in the construction of buildings such as the station building, etc. In this case, it is preferable to use a heat storage laminate having the structure shown in any of the above configurations (1) to (3) as the heat storage laminate of the present invention in order to ensure the strength of the building, etc.

[0050] The heat storage laminate of the present invention obtained by the above method can be used to construct the above-mentioned buildings. The buildings are also called shelters, and examples thereof include buildings for communication equipment, buildings for energy facilities, buildings for firefighting radio and disaster prevention radio, buildings for data centers, buildings for power sources, buildings for warnings, buildings for observation, buildings for broadcasting, buildings related to control of railways, ships, aircraft, etc., buildings related to water supply, and buildings for high-voltage power receiving and transformer facilities.

[0051] Furthermore, the heat storage laminate of the present invention can be used to manufacture various containers other than the station buildings.

Claims

1. A heat insulating material is provided on at least one side of the metal surface material (A), and a heat storage surface material and a metal surface material (B) are provided on the side constituted by the heat insulating material, The heat storage surface material is a heat storage sheet in which a heat storage material is dispersed in a resin matrix, The heat storage material is an encapsulated heat storage particle that encapsulates a latent heat storage material that exhibits a solid / liquid phase transition, The heat storage layered body is characterized in that the particle size of the heat storage particles is 50 to 500 μm.

2. The heat storage laminate according to claim 1, wherein at least one of the metal surface material (A) and the metal surface material (B) is an aluminum plate.

3. 3. The heat storage laminate according to claim 1, wherein the thickness of the metal surface material (A) and the metal surface material (B) is 0.1 to 5 mm.

4. 4. The heat storage laminate according to claim 1, wherein a metal surface material (A), a heat insulating material, a heat storage surface material, and a metal surface material (B) are provided in this order.

5. The heat storage laminate according to any one of claims 1 to 4, wherein the thickness of the heat storage face material is 0.3 to 15 mm.

6. A building component comprising the heat storage laminate of any one of claims 1 to 5.

7. A station building provided with a wall material, a ceiling material, or a floor material made of the building member according to claim 6.