Heat shield laminate, and colored member

Abstract

To provide a heat shield laminate having a metal layer and a colored layer, and capable of restraining temperature rise by radiant heat.SOLUTION: A heat shield laminate includes a metal layer, and a colored layer disposed on one face side of the metal layer, where a colored layer side face of the heat shield laminate has a rate of change of a degree of reflection after heat treatment at 200°C for 60 min. of more than 0% and 20% or less.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a thermal barrier laminate and a colored member using the same. [Background technology]

[0002] Insulating materials are used for the purpose of energy saving in buildings, etc. For example, foam insulating materials such as rigid urethane foam are widely used as insulating materials. Therefore, many techniques related to foam insulating boards containing foam insulating materials have been proposed.

[0003] Conventionally, a metal foil such as aluminum foil or a vapor-deposited film having a metal vapor-deposited film may be attached to the surface of a heat insulating material. The purpose of using the metal foil or vapor-deposited film in this way is to suppress combustion of the heat insulating material by the heat-shielding effect of the metal foil or the vapor-deposited film.

[0004] On the other hand, when a film with metal foil or metal vapor deposition is laminated on the surface of a heat insulating material for the purpose of heat insulation, the surface becomes metallic in color. Therefore, depending on the place of use, it may not be suitable in terms of light reflection or color. In recent years, lightweight non-combustible insulation boards are sometimes used for interior materials such as ceilings and walls to ensure safety against earthquakes. Since such non-combustible insulation boards are used exposed to the living environment, they are required to have a good design. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2021-154694 A [Patent Document 2] JP 2021-160144 A Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the above, it is conceivable to use a heat shielding laminate having a metal layer and a colored layer as a surface material for a heat insulating board. However, in the case of such a heat shielding laminate, when a fire or the like occurs, the colored layer turns black, reducing the reflecting effect of radiant heat, and the heat shielding effect of the heat shielding laminate may be impaired. If the heat shielding effect of the heat shielding laminate is reduced, the temperature of the heat shielding laminate increases due to radiant heat, and the flammability of the heat insulating board increases.

[0007] The present disclosure has been made in consideration of the above circumstances, and has a main object to provide a heat shielding laminate having a metal layer and a colored layer, which is capable of suppressing a temperature rise caused by radiant heat. [Means for solving the problem]

[0008] One embodiment of the present disclosure is a heat-shielding laminate having a metal layer and a colored layer arranged on one side of the metal layer, wherein the surface of the heat-shielding laminate facing the colored layer has a change in reflectance after heat treatment at 200°C for 60 minutes that is greater than 0% and less than or equal to 20%.

[0009] One embodiment of the present disclosure is a heat-shielding laminate having a metal layer and a colored layer arranged on one side of the metal layer, wherein the surface of the heat-shielding laminate facing the colored layer has a reflectance of 75% or more and a rate of change in reflectance after heat treatment at 300°C for 60 minutes is 20% or less.

[0010] One embodiment of the present disclosure is a colored member comprising a base and the above-mentioned heat shielding laminate arranged on at least one surface of the base, wherein the heat shielding laminate is arranged so that the metal layer faces the base. Effect of the Invention

[0011] According to the present disclosure, it is possible to provide a heat shielding laminate having a metal layer and a colored layer, which is capable of suppressing a temperature rise due to radiant heat in a high-temperature condition such as a fire. [Brief description of the drawings]

[0012] [Figure 1] 1 is a schematic cross-sectional view illustrating a thermal barrier laminate according to the present disclosure. [Diagram 2] 1 is a schematic cross-sectional view illustrating a thermal barrier laminate according to the present disclosure. [Diagram 3] 1 is a schematic cross-sectional view illustrating a thermal barrier laminate according to the present disclosure. [Figure 4] 1 is a schematic cross-sectional view illustrating a thermal barrier laminate according to the present disclosure. [Diagram 5] 1 is a schematic cross-sectional view illustrating a colored member according to the present disclosure. [Figure 6] FIG. 1 is a schematic cross-sectional view of a foam insulation board using a conventional thermal barrier laminate as a surface material for the foam insulation board, where a heat generation test was performed using a cone calorimeter. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The following describes the embodiments of the present disclosure with reference to the drawings. However, the present disclosure can be implemented in many different forms, and should not be interpreted as being limited to the description of the embodiments exemplified below. In addition, the drawings may be schematic in terms of the width, thickness, shape, etc. of each part compared to the actual form in order to make the explanation clearer, but these are merely examples and do not limit the interpretation of the present disclosure. In this specification and each figure, elements similar to those described above with respect to the previous figures may be given the same reference numerals, and detailed explanations may be omitted as appropriate.

[0014] In this specification, when describing a mode in which another component is disposed on a certain component, the term "above" or "below" is used, unless otherwise specified, to include both a case in which another component is disposed directly above or below a certain component so as to be in contact with the component, and a case in which another component is disposed above or below a certain component with another component interposed therebetween. Also, in this specification, when describing a mode in which another component is disposed on the surface of a certain component, the term "on the surface side" or "on the surface" is used, unless otherwise specified, to include both a case in which another component is disposed directly above or below a certain component so as to be in contact with the component, and a case in which another component is disposed above or below a certain component with another component interposed therebetween.

[0015] As described above, in a conventional heat shielding laminate having a metal layer and a colored layer, the colored layer may turn black at high temperatures, reducing the heat shielding effect of the surface of the heat shielding laminate. If the heat shielding effect of the heat shielding laminate is reduced, the temperature of the heat shielding laminate may rise due to radiant heat, increasing the possibility that interior materials such as insulation boards may burn. Specifically, during a heat generation test using a cone calorimeter conforming to ISO5660-1:2015, heat may be stored in the insulation board, and the total heat generation amount may exceed the non-combustible performance standard in the non-combustible material certification established by the Ministry of Land, Infrastructure, Transport and Tourism (do not pass the non-combustible performance test).

[0016] In addition, there is a problem that the heat shield laminate comes into contact with the ignition plug of the test device during the heat generation test using a cone calorimeter, making it impossible to make a judgment. Figures 6(a) and 6(b) are schematic cross-sectional views of a foam insulation board using a heat shield laminate having a conventional colored layer as a surface material, when a heat generation test using a cone calorimeter is performed. The foam insulation board 200 shown in Figures 6(a) and 6(b) has a foam insulation material 20 and a heat shield laminate 21 that is disposed on at least one surface of the foam insulation material 20 and has a metal layer 22 and a colored layer 23. As shown in Figure 6(a), when a heat generation test is performed using a foam insulation board 200 using a heat shield laminate 21 having a colored layer 23 as a surface material, the temperature of the heat shield laminate 21 rises due to radiant heat from a cone-shaped heater 61. When the temperature of the heat shield laminate 21 rises, the components of the colored layer 23 in the heat shield laminate 21 turn black due to oxidation discoloration, and the reflectance decreases. The temperature of the heat shield laminate 21 further increases by the amount of the decrease in reflectance. Furthermore, as shown in Figure 6 (b), when the foam insulation material 20 exceeds a predetermined temperature, gas is generated and remains at the interface with the thermal barrier laminate 21, causing the thermal barrier laminate 21 to expand outward due to the retained gas, or the foam insulation material 20 itself expands due to the expansion of the internal gas, causing it to come into contact with the ignition plug 62 of the testing equipment, making it impossible to make a judgment.

[0017] In response to such problems, Patent Document 1 describes a colored insulation board having a facing material with a colored coating layer on the surface of an aluminum layer and a foam, the surface of the foam being an exhaust passage. Patent Document 2 describes a colored insulation board having a facing material with a colored coating layer on the surface of an aluminum layer and a foam, the surface of the foam being an exhaust passage, the boundary between the back surface of the facing material and the foam having a heat communication layer. Meanwhile, as a fundamental solution, a heat shielding laminate capable of suppressing temperature rise due to radiant heat is required.

[0018] The inventors faced the above-mentioned problems and conducted intensive research, resulting in the discovery of the following thermal barrier laminate. Hereinafter, the thermal barrier laminate of the present disclosure will be described in detail in a first embodiment and a second embodiment.

[0019] A-1. Thermal barrier laminate (first embodiment) Fig. 1 is a schematic cross-sectional view showing an example of a thermal barrier laminate of this embodiment. As shown in Fig. 1, a thermal barrier laminate 1 of this embodiment has a metal layer 2 and a colored layer 3 arranged on one side of the metal layer 2. The thermal barrier laminate 1 of this embodiment is characterized in that the change rate of reflectance of a surface 1A on the colored layer 3 side after heat treatment at 200°C for 60 minutes is greater than 0% and less than or equal to 20%.

[0020] Fig. 5 is a schematic cross-sectional view showing an example of a colored member using the thermal barrier laminate of this embodiment. As shown in Fig. 5, the colored member 100 includes a base 11 and the above-mentioned thermal barrier laminate 1 arranged on at least one surface side of the base 11, and the thermal barrier laminate 1 is arranged so that the metal layer 2 faces the base 11.

[0021] The heat shielding laminate of this embodiment improves design by the colored layer, while the change rate of reflectance of the colored layer side after heat treatment at 200°C for 60 minutes is set to a predetermined low range, thereby suppressing the temperature rise caused by radiant heat. Therefore, a colored member (e.g., a heat insulating board) equipped with the heat shielding laminate of this embodiment has improved flame retardancy. Specifically, the temperature rise during a heat generation test using a cone calorimeter can be suppressed, and for example, the non-combustibility performance can be passed or higher. Furthermore, when the heat shielding laminate of this embodiment is used as a surface material for a foamed heat insulating board, the generation of pyrolysis gas of the foam during a heat generation test can be suppressed, and the heat shielding laminate can be suppressed from expanding outward. Therefore, there is no risk of the heat generation test being impossible to judge.

[0022] 1. Reflectance change rate The surface of the heat shielding laminate of this embodiment facing the colored layer has a rate of change in reflectance after heat treatment at 200°C for 60 minutes (hereinafter referred to as "rate of reflectance change after heat treatment at 200°C for 60 minutes") of 20% or less, preferably 15% or less, and more preferably 10% or less. In this specification, "the surface of the heat shielding laminate facing the colored layer" refers to the surface of the heat shielding laminate that is located on the colored layer side with respect to the metal layer.

[0023] Although the surface of the thermal barrier laminate facing the colored layer changes in reflectance after heat treatment at 200°C for 60 minutes, the reflectance change rate is low within the above range, so the radiant heat reflection effect is not reduced, and this makes it possible to suppress a decrease in the thermal barrier performance. On the other hand, the surface of the thermal barrier laminate facing the colored layer at least changes in reflectance after heat treatment at 200°C for 60 minutes. That is, the reflectance change rate after heat treatment at 200°C for 60 minutes is preferably greater than 0% and equal to or greater than 5%. The reflectance change rate after heat treatment at 200°C for 60 minutes is usually smaller than the reflectance change rate after heat treatment at 300°C for 60 minutes, which will be described later.

[0024] The rate of change in reflectance after heat treatment at 200° C. for 60 minutes was determined by measuring the reflectance before and after heat treatment at 200° C. for 60 minutes using a muffle furnace and calculating it according to the following formula. Reflectance change rate (%) = {(reflectance before heat treatment R0 - reflectance after heat treatment R 200 ) / (reflectance before heat treatment R0)}×100(%)

[0025] In this embodiment, the reflectance is a value measured by the following measurement method. Using an ultraviolet-visible-infrared spectrophotometer and an integrating sphere unit, light with wavelengths of 300 nm to 2500 nm is irradiated at an incident angle of 5° to any measurement site on the colored layer side of a sample piece of the heat shielding laminate, and the reflectance at each wavelength (nm) at 1 nm intervals is measured by the spectrophotometer, and the average value of the measured values ​​at all wavelengths is calculated. Measurements are similarly performed for five measurement sites, and the average value of the five sites is regarded as the reflectance of the colored layer.

[0026] The rate of change in reflectance after the heat treatment at 200° C. for 60 minutes can be adjusted by adjusting the thickness and carbon content of the colored layer described below.

[0027] The reflectance R0 of the colored layer side surface before the heat treatment at 200° C. for 60 minutes is preferably 75% or more, more preferably 77% or more, whereas the reflectance R0 is, for example, 85% or less, preferably 80% or less.

[0028] Reflectance R of the colored layer side after the above heat treatment at 200℃ for 60 minutes 200 is preferably 63% or more, and more preferably 65% ​​or more. 200 is, for example, 75% or less, and preferably 73% or less.

[0029] Furthermore, the surface of the heat shielding laminate on the colored layer side in this embodiment preferably exhibits a reflectance change rate of 20% or less, more preferably 15% or less, and particularly preferably 10% or less after heat treatment at 300° C. for 60 minutes, and preferably exhibits a reflectance change rate of 20% or less, more preferably 15% or less, and particularly preferably 10% or less after heat treatment at 400° C. for 60 minutes.

[0030] 2. Colored layer The thermal barrier laminate in this embodiment has a colored layer disposed on one side of the metal layer. The colored layer improves the design of the thermal barrier laminate. The colored layer may constitute one of the outermost surfaces of the thermal barrier laminate.

[0031] (1) Composition The colored layer in this embodiment includes, for example, a colorant and a resin component. The colorant may be used alone or in combination of two or more. The colorant is not particularly limited as long as the reflectance change rate of the surface on the colored layer side falls within the above range, and examples thereof include white pigments, yellow pigments, blue pigments, red pigments, brown pigments, and black pigments. Examples of white pigments include titanium dioxide, aluminum oxide, tin oxide, indium oxide, indium tin oxide (ITO), titanium dioxide-coated mica, zinc oxide (zinc oxide), white lead (basic lead carbonate), antimony white (antimony trioxide), zinc sulfide, barium sulfate, and calcium carbonate, or inorganic particles such as silica as an extender pigment. In addition, the pigment is not limited to white pigments, and red pigments such as red lead, iron oxide red, cadmium red, quinacridone red, etc., yellow pigments such as yellow lead, zinc yellow (zinc yellow type 1, zinc yellow type 2), titanium yellow, isoindolinone yellow, etc., and blue pigments such as ultramarine blue, Prussian blue (potassium ferrocyanide), phthalocyanine blue, etc. may also be used. As the black pigment, a heat insulating black pigment is preferable. On the other hand, it is preferable that the colored layer in this embodiment does not contain carbon black as a colorant. This is because the reflectance is low. The amount of colorant added can be appropriately set according to the desired color tone, etc.

[0032] Examples of the resin component include epoxy resins, melamine resins, (meth)acrylic resins, ester urethane resins, acrylamide resins, ethylene oxide resins, N-vinylpyrrolidone resins, ester resins, amide resins, vinyl acetate resins, vinyl chloride resins, urethane (meth)acrylic resins, natural rubber, synthetic rubber, and cellulose derivatives. Among these, cellulose derivatives are preferred. Examples of the cellulose derivatives include nitrocellulose (nitrocellulose). The resin component may be used alone or in combination of two or more.

[0033] The colored layer in this embodiment contains, for example, a carbon component. The carbon component corresponds to the above-mentioned resin component. The content of the carbon component in the colored layer is, for example, 60% or less, preferably 35% or less, and more preferably 15% or less. When the content of the carbon component is within the above range, it is easy to adjust the reflectance change rate of the surface of the heat shielding laminate on the colored layer side to the above range. On the other hand, the content of the carbon component is, for example, 3% or more, and may be 5% or more. When the content of the carbon component is within the above range, cracks and the like can be suppressed, and the film formability of the colored layer is improved.

[0034] The carbon content in the colored layer was calculated from the following formula after performing a partial composition analysis of the sample (colored layer) using an XRF analyzer under the following conditions. (Pretreatment) Cut the heat insulating laminate into a 4cm x 4cm piece and fix it in a sample folder. (Measurement conditions) ·X-ray: Rh tube ·3.8kW (40kV · 95mA) Measurement diameter: 30mmφ Measurement atmosphere: Vacuum Measurement range: 3B~92U Carbon content (%) = (weight percent of carbon element (C) / weight percent of all detected elements) x 100 (%)

[0035] The colored layer may contain a flame retardant, for example, antimony-based flame retardants such as antimony trioxide, molybdenum-based flame retardants such as molybdenum trioxide, metal hydroxide-based flame retardants such as magnesium hydroxide and aluminum hydroxide, and halogen-based flame retardants such as chlorinated paraffin and hexabromocyclododecane.

[0036] (2) Thickness In this embodiment, the colored layer has a thickness of preferably 0.3 μm or more, more preferably 0.5 μm or more, and even more preferably 1.0 μm or more. By having the thickness in the above range, coating unevenness and the like can be suppressed, and good film formability can be obtained. On the other hand, the thickness is, for example, 2.0 μm or less, and preferably 1.5 μm or less. By having the thickness in the above range, it is easy to adjust the reflectance change rate of the surface on the colored layer side of the heat shielding laminate to the above range.

[0037] The thickness of the colored layer is the average value of the thicknesses of the colored layer at any three positions obtained by embedding a sample of the thermal barrier laminate in resin, cutting out a cross section in the thickness direction with a microtome or the like to form a cross section for observation, and observing the cross section with a scanning electron microscope (SEM). The same method can be used to measure the thicknesses of the thermal barrier laminate and other layers contained in the thermal barrier laminate.

[0038] (3)Other The colored layer is, for example, a solid layer. In the present disclosure, the solid layer is a layer formed on the entire surface of one side of the metal layer. On the other hand, the colored layer may be, for example, a patterned layer. In the present disclosure, the patterned layer means a layer formed partially (particularly in a patterned form) on one side of the base layer. Examples of patterns (patterns) in the patterned layer include a stone pattern, a sand pattern, a tiled pattern, a wood grain pattern, a brick pattern, a cloth pattern, a leather pattern, a geometric figure (dots, stripes, etc.), a letter, a symbol, an abstract pattern, and a floral pattern.

[0039] The colored layer may have both a solid layer and a pattern layer. In this case, the solid layer may be located closer to the metal layer than the pattern layer. When the colored layer has only a pattern layer, the heat shielding laminate has an exposed region where the metal layer is exposed. The area of ​​the exposed region is, for example, 10% or more, 20% or more, or 30% or more relative to the area of ​​the heat shielding laminate in a plan view. The larger the area of ​​the exposed region, the higher the reflectance of the surface of the heat shielding laminate on the colored layer side. On the other hand, the area of ​​the exposed region is, for example, 90% or less, 80% or less, or 70% or less. If the area of ​​the exposed region is too large, the design may be poor, depending on the pattern of the colored layer, for example, in the case of a white wood grain pattern.

[0040] When the colored layer has a relatively large printed portion other than a pattern, such as a logo or mark of a product name or manufacturer name, the reflectance is measured while avoiding the printed portion.

[0041] 3. Metal layer The heat shielding laminate of the present disclosure includes a metal layer, which is a layer that imparts a heat ray reflecting function to a colored member (e.g., a heat insulating board) when the colored member is formed.

[0042] The thickness of the metal layer can be, for example, 20 μm or more, and preferably 40 μm or more. By making the thickness of the metal layer equal to or more than the above value, the influence of pinholes can be suppressed, and the decrease in the heat shielding effect can be suppressed. On the other hand, the thickness of the metal layer can be 100 μm or less, and preferably 60 μm or less. By making the thickness of the metal layer equal to or less than the above value, the weight can be reduced, which is also preferable in terms of cost.

[0043] The metal layer is composed of a metal or a metal alloy. The metal or metal alloy is preferably one that has heat ray reflectivity that reflects near infrared rays or infrared rays, and is preferably, for example, aluminum, magnesium, silver, copper, titanium, and alloys thereof, or stainless steel. Among them, it is preferable to use aluminum, an aluminum alloy, or stainless steel because of its good corrosion resistance. In particular, it is preferable to use aluminum because of its high heat ray reflectivity, moisture resistance, and gas barrier property, good processability, low cost, and light weight.

[0044] As the metal layer, for example, a metal foil containing at least one selected from the above-mentioned metals and metal alloys can be used. The metal foil is generally a metal or metal alloy that is thinly stretched, for example, by beating. Among them, the metal layer is preferably an aluminum foil, an aluminum alloy foil, or a stainless steel foil, and more preferably an aluminum foil or an aluminum alloy foil. When an aluminum foil or an aluminum alloy foil is used as the metal layer, it is preferable that the matte surface of the metal foil is the colored layer side. This is because the matte surface has a higher reflectance than the other surface (glossy surface). In other words, when the reflectance is different between the front and back of the metal foil, it is preferable that the surface with the higher reflectance is the colored layer side.

[0045] As the metal layer, for example, a metal vapor deposition film containing at least one selected from the above-mentioned metals and metal alloys can be used. Among them, a vapor deposition film containing aluminum or an aluminum alloy is more preferable. The method for forming the metal vapor deposition film is not particularly limited, and for example, a physical vapor deposition method such as a sputtering method, a vacuum vapor deposition method, an ion plating method, or a chemical vapor deposition method (CVD: Chemical Vapor Deposition) method can be appropriately selected and used. The metal vapor deposition film is formed, for example, on a resin substrate. In this case, the thermal barrier laminate has a resin substrate disposed on the surface opposite to the colored layer side of the metal vapor deposition film. That is, in this case, the thermal barrier laminate has a resin substrate, a metal vapor deposition layer, and a colored layer in this order in the stacking direction. The thickness of the metal vapor deposition film is usually about 5 nm or more and 500 nm or less.

[0046] As the resin substrate, a thermoplastic resin bondable to a substrate described later can be used. The resin film may be unstretched or may be uniaxially or biaxially stretched. The resin substrate may or may not have transparency. The resin used for the resin substrate is not particularly limited, and examples thereof include polyolefin resins such as polyethylene and polypropylene, polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT), cyclic polyolefin resins, polystyrene resins, acrylonitrile-styrene copolymers (AS resins), acrylonitrile-butadiene-styrene copolymers (ABS resins), poly(meth)acrylic resins, polycarbonate resins, polyvinyl alcohol resins such as polyvinyl alcohol (PVA) and ethylene-vinyl alcohol copolymers (EVOH), ethylene-vinyl ester copolymers and saponified products thereof, polyamide resins such as various nylons, polyimide resins, polyurethane resins, acetal resins, and cellulose resins.

[0047] 4. Other layers The heat shielding laminate of this embodiment may have layers other than the metal layer and the colored layer described above. Fig. 2, Fig. 3, and Fig. 4 are schematic cross-sectional views showing an example of the heat shielding laminate of this embodiment. As shown in Fig. 2, the heat shielding laminate 1 may have a transparent protective film 4 on the surface of the colored layer 3 opposite to the surface of the metal layer 2. As shown in Fig. 3, the heat shielding laminate 1 may have an adhesive layer 5 on the surface of the metal layer 2 opposite to the surface of the colored layer 3. As shown in Fig. 4, the heat shielding laminate 1 may have a transparent protective film 4 on the surface of the colored layer 3 opposite to the surface of the metal layer 2, and an adhesive layer 5 on the surface of the metal layer 2 opposite to the surface of the colored layer 3.

[0048] (1)Transparent protective film The heat shield laminate of this embodiment may have a transparent protective film in order to impart durability, scratch resistance, chemical resistance, and the like.

[0049] The transparent protective film is, for example, a transparent resin layer formed from a resin component. The resin component is, for example, a cured product (crosslinked structure) of a curable resin. On the other hand, the resin component may be a thermoplastic resin. In particular, it is preferable that the transparent protective film contains a cured product of a curable resin. The curable resin may be, for example, at least one selected from a thermosetting resin, a two-component curing resin, and an ionizing radiation curing resin.

[0050] The method of forming the transparent resin layer is not particularly limited, and can be appropriately selected depending on the type of resin forming the transparent resin layer. For example, when a composition for a barrier layer containing a thermosetting resin is used to form the transparent resin layer, a method of applying a composition for a transparent resin layer containing a curable resin onto a colored layer and curing the composition by heating can be mentioned. When a composition containing a thermoplastic resin is used, a method of extruding a composition for a transparent resin layer onto a colored layer and laminating it, a method of applying a composition for a transparent resin layer, etc. can be mentioned.

[0051] The film thickness of the transparent resin layer is, for example, 3 μm or less, and preferably 2 μm or less. By making the film thickness of the transparent resin layer the above value or less, the carbon component can be reduced, and the heat resistance is improved. On the other hand, the film thickness of the transparent resin layer is, for example, 0.3 μm or more, and preferably 0.5 μm or more. By making the film thickness of the transparent resin layer the above value or more, the function as a protective film can be ensured.

[0052] The transparent protective film may be a transparent inorganic compound layer mainly made of an inorganic compound, such as inorganic oxides of Si, Al, Ti, etc., inorganic nitrides, inorganic carbides, inorganic carbides of oxides, inorganic carbides of nitrides, inorganic oxynitrides, inorganic oxycarbides, etc.

[0053] The thickness of the transparent inorganic compound layer is, for example, 3 μm or less, and preferably 2 μm or less. By having the thickness of the transparent inorganic compound layer be the above value or less, it is preferable that the inorganic component can be reduced and the flexibility is improved. On the other hand, the thickness of the transparent inorganic compound layer is, for example, 0.3 μm or more, and preferably 0.5 μm or more. By having the thickness of the transparent inorganic compound layer be the above value or more, it is possible to ensure the function as a protective film.

[0054] The method for forming the transparent inorganic compound layer is not particularly limited, and examples thereof include a method for depositing a transparent inorganic compound using a chemical vapor deposition method, a sputtering method, an ion plating method, a vacuum deposition method, or the like.

[0055] (2) Adhesion layer The heat shielding laminate in this embodiment may have an adhesive layer to improve adhesion to the base. When the heat shielding laminate has an adhesive layer, the adhesive layer may constitute one of the outermost surfaces of the heat shielding laminate. The adhesive layer contains, for example, a resin. Examples of the resin include polyester resins such as polyethylene terephthalate (PET), urethane resins, and epoxy resins. Among them, polyethylene terephthalate (PET) is preferable. This is because it is inexpensive, has a relatively high melting temperature of 260°C to 270°C, and is excellent in heat resistance. In addition, when corona treatment is performed, the surface has good wettability, and adhesion to isocyanurate resins in inks, adhesives, and heat insulating materials is good for a long time.

[0056] An example of a method for forming the adhesive layer is a method of laminating a resin film (e.g., a PET film) on a metal layer by dry lamination. When the metal layer is a metal foil, a resin film can be attached to the glossy side of the metal foil to form an adhesive layer. When the adhesive layer is a resin film, the thickness of the adhesive layer is preferably 5 μm or more and 20 μm or less. In addition, an example of a method for forming the adhesive layer is a method of applying and drying a composition for an adhesive layer. In this case, the thickness of the adhesive layer is preferably 0.5 μm or more and 3.0 μm or less. The method for applying the composition for an adhesive layer on a metal layer is not particularly limited, and examples thereof include known methods such as spin coating, dipping, spraying, die coating, bar coating, roll coater, meniscus coater, flexographic printing, screen printing, and bead coater. The adhesive layer may be subjected to a surface treatment such as corona treatment on the surface in order to improve adhesion to the substrate.

[0057] In the heat shielding laminate of the present embodiment, an easy-adhesion layer may be disposed between the metal layer and the colored layer, between the adhesive layer and the metal layer, and between the colored layer and the transparent protective layer. As the easy-adhesion layer, a conventionally known material can be used. The easy-adhesion layer contains, for example, a urethane resin.

[0058] 5.Thickness The thickness of the thermal barrier laminate in this embodiment is, for example, 40 μm or more, and may be 50 μm or more. If the thickness is too thin, poor appearance is likely to occur when integrated with the base. Furthermore, at high temperatures, when stress is applied to the surface material due to the expansion of the insulating gas in the foamed insulation material or the thermal expansion of the foamed insulation material itself, cracks are likely to occur. On the other hand, the thickness of the thermal barrier laminate is, for example, 100 μm or less, and may be 80 μm or less. If the thickness is too thick, it is disadvantageous in terms of cost. In the present disclosure, the "thickness of the thermal barrier laminate" refers to the total thickness of the layers that constitute the thermal barrier laminate.

[0059] 6.Heat insulation In the thermal barrier laminate of this embodiment, when a heat generation test is carried out in accordance with the cone calorimeter test conditions specified in ISO5660-1:2015, the temperature of the thermal barrier laminate after 20 minutes is preferably 300° C. or less, more preferably 280° C. or less, and even more preferably 250° C. or less. If the temperature of the thermal barrier laminate is equal to or less than the above value, for example, the generation of pyrolysis gas from the foamed insulation material can be suppressed. The temperature of the thermal barrier laminate is a measured value measured using a thermocouple from the back side (metal layer side) of the thermal barrier laminate.

[0060] 7.Applications The heat shielding laminate of the present embodiment is preferably used integrally with an insulating material such as a foam insulating material, a wood-based board such as a wooden veneer, a plywood, or a particle board, or an FRP (fiber reinforced plastic). That is, the heat shielding laminate of the present embodiment is preferably used as a surface material for an insulating board. In particular, it is preferably used as a surface material for a foam insulating board. That is, the heat shielding laminate of the present embodiment is preferably disposed on at least one side of a foam insulating material and used to produce a foam insulating board.

[0061] A-2. Thermal barrier laminate (second embodiment) Fig. 1 is a schematic cross-sectional view showing an example of a thermal barrier laminate of the present embodiment. As shown in Fig. 1, the thermal barrier laminate 1 of the present embodiment has a metal layer 2 and a colored layer 3 arranged on one side of the metal layer 2. The thermal barrier laminate 1 of the present embodiment is characterized in that the reflectance of the surface 1A on the colored layer 3 side is 75% or more, and the rate of change in reflectance after heat treatment at 300°C for 60 minutes is 20% or less.

[0062] Fig. 5 is a schematic cross-sectional view showing an example of a colored member using the thermal barrier laminate of this embodiment. As shown in Fig. 5, the colored member 100 includes a base 11 and the above-mentioned thermal barrier laminate 1 arranged on at least one surface side of the base 11, and the thermal barrier laminate 1 is arranged so that the metal layer 2 faces the base 11.

[0063] The thermal barrier laminate of this embodiment improves design by the colored layer, and the change rate of reflectance of the surface on the colored layer side after heat treatment at 300°C for 60 minutes is within a predetermined low range, so that the temperature rise caused by radiant heat can be suppressed. Therefore, a colored member (e.g., a heat insulating board) including the thermal barrier laminate of this embodiment has improved flame retardancy. Specifically, the temperature rise during a heat generation test using a cone calorimeter can be suppressed, and for example, the non-combustibility performance can be passed or higher. Furthermore, when the thermal barrier laminate of this embodiment is used as a surface material for a foamed heat insulating board, the generation of pyrolysis gas of the foam during a heat generation test can be suppressed, and the thermal barrier laminate can be suppressed from expanding outward. Therefore, there is no risk of the heat generation test being impossible to judge.

[0064] 1. Reflectance and reflectance change rate In this embodiment, the surface of the heat shield laminate facing the colored layer has a reflectance change rate after heat treatment at 300°C for 60 minutes (hereinafter referred to as reflectance change rate after heat treatment at 300°C for 60 minutes) of 20% or less, preferably 15% or less, and more preferably 10% or less. When the reflectance change rate after heat treatment at 300°C for 60 minutes is low as in the above range, deterioration of the heat shielding performance can be suppressed. On the other hand, in this embodiment, the surface of the heat shield laminate facing the colored layer has a reflectance change rate after heat treatment at 300°C for 60 minutes of preferably more than 0% and 5% or more, for example.

[0065] In this specification, the change in reflectance after heat treatment at 300° C. for 60 minutes is a value calculated by measuring the reflectance before and after heat treatment at 300° C. for 60 minutes using a muffle furnace and using the following formula. Reflectance change rate (%) = {(reflectance before heat treatment R0 - reflectance after heat treatment R 300 ) / (reflectance before heat treatment R0)}×100(%)

[0066] The method for measuring the reflectance is the same as that described in the above-mentioned embodiment 1. The change in reflectance after the heat treatment at 300° C. for 60 minutes can be adjusted by adjusting the thickness of the colored layer and the carbon content.

[0067] The reflectance of the surface on the colored layer 3 side of the heat shielding laminate in this embodiment (reflectance R0 of the surface on the colored layer side before the heat treatment at 300°C for 60 minutes) is 75% or more, and preferably 77% or more. On the other hand, the reflectance R0 is, for example, 85% or less, and preferably 80% or less.

[0068] Reflectance R of the colored layer side after the above heat treatment at 300℃ for 60 minutes 300 is preferably 60% or more, and more preferably 63% or more. 300 is, for example, 73% or less, and preferably 70% or less.

[0069] Furthermore, in this embodiment, the change in reflectance on the colored layer side of the heat shielding laminate after heat treatment at 400°C for 60 minutes is preferably 20% or less, more preferably 15% or less, and particularly preferably 10% or less.

[0070] 2. Colored layer The thermal barrier laminate of the present disclosure includes a colored layer. Details of the colored layer are the same as those described in the first embodiment.

[0071] 3. Metal layer The thermal barrier laminate of the present disclosure includes a metal layer, the details of which are the same as those described in the first embodiment.

[0072] 4. Other layers The heat shielding laminate in this embodiment may have layers other than the metal layer and the colored layer described above. FIG. 2, FIG. 3, and FIG. 4 are schematic cross-sectional views showing an example of the heat shielding laminate in this embodiment. As shown in FIG. 2, the heat shielding laminate 1 may have a transparent protective film 4 on the side opposite to the metal layer 2 side of the colored layer 3. As shown in FIG. 3, the heat shielding laminate 1 may have an adhesion layer 5 on the side opposite to the metal layer 3 side of the colored layer 3. As shown in FIG. 4, the heat shielding laminate 1 may have a transparent protective film 4 on the side opposite to the metal layer 2 side of the colored layer 3, and may have an adhesion layer 5 on the side opposite to the colored layer 3 side of the metal layer 2. Although not particularly shown, an easy-adhesion layer may be disposed between the metal layer and the colored layer, between the adhesion layer and the metal layer, and between the colored layer and the transparent protective layer.

[0073] The details of the transparent protective film, the adhesive layer and the easy-adhesion layer are the same as those described in the first embodiment.

[0074] 5.Other The thickness, heat shielding properties and uses of the thermal barrier laminate in this embodiment are the same as those described in the first embodiment above.

[0075] B. Colored materials The colored member of the present disclosure includes a base and the above-mentioned heat shielding laminate disposed on at least one surface of the base, and the heat shielding laminate is disposed so that the metal layer faces the base. Fig. 5 is a schematic cross-sectional view showing an example of the colored member of the present disclosure. Note that Fig. 5 has already been described in the above section "A-1. Heat shielding laminate (first embodiment)", so description thereof will be omitted here.

[0076] The colored member of the present disclosure has the heat shielding laminate of the first or second embodiment described above, and thus the temperature rise caused by radiant heat is suppressed. Heat accumulation in the colored member can be reduced, and flammability is reduced.

[0077] In order to evaluate non-combustible materials under the Building Standards Act, heat generation tests are conducted on insulation boards using a cone calorimeter conforming to ISO5660-1:2015. A cone calorimeter is a device that heats a sample with a cone-shaped heater, ignites it with a spark igniter, burns it, and measures the oxygen concentration in the generated gas. The cone calorimeter can measure the total heat generation amount, maximum heat generation rate, burning time from ignition to extinguishing, weight retention (weight percentage after the test based on the weight before the test) and other items to evaluate flammability.

[0078] As described above, the heat shielding laminate of this embodiment suppresses temperature rise during heat generation testing using a cone calorimeter. Therefore, a colored member (e.g., a heat insulating board) equipped with the heat shielding laminate of this embodiment has improved flame retardancy. Specifically, it is possible to satisfy the requirements for obtaining non-flammable certification in a heat generation test. Furthermore, when used as a surface material for a foamed insulation board, it is possible to reduce the amount of pyrolysis gas generated during a heat generation test using a cone calorimeter, and it is possible to suppress expansion caused by gas remaining between the foamed insulation material and the surface material for the foamed insulation board. Therefore, there is no risk of the heat generation test being impossible to judge. Below, each configuration of the colored member in the present disclosure will be described.

[0079] 1.Heat-shielding laminate In the present disclosure, the thermal barrier laminate may be disposed on one main surface of the substrate, or may be disposed on both main surfaces of the substrate.

[0080] The thermal barrier laminate has been described in detail above in the sections "A-1. Thermal barrier laminate (first embodiment)" and "A-2. Thermal barrier laminate (second embodiment)," so description thereof will be omitted here.

[0081] 2.Base The substrate in the present disclosure is, for example, a heat insulating material. The substrate is, for example, plate-like. The plate-like refers to a thin, flat shape having two opposing surfaces and a peripheral side surface connecting the two surfaces.

[0082] Examples of the heat insulating material include foamed heat insulating material. The foamed heat insulating material is made of a rigid material having heat insulating properties. Examples of the foamed heat insulating material include foamed heat insulating materials generally used in heat insulating boards, such as rigid urethane foam and phenol foam. Examples of the heat insulating gas enclosed in the internal bubbles include fluorocarbon gases such as CFCs (chlorofluorocarbons), HCFCs (hydrochlorofluorocarbons), and HFCs (hydrofluorocarbons).

[0083] Rigid urethane foam is mainly formed by the reaction of hydroxyl group (OH group) with isocyanate group, and includes isocyanurate foam, which is generally included in the definition of rigid urethane foam. Rigid urethane foam can be formed, for example, using a polyol compound having a hydroxyl group (OH group), an isocyanate compound having an isocyanate group, and a foaming agent. The polyol compound is not particularly limited, and for example, polyether polyol, polyester polyol, polyether ester polyol, etc. can be used. The polyol compound may be used alone or in combination of two or more. For example, an aliphatic or aromatic polyisocyanate having two or more isocyanate groups, a mixture thereof, and a modified polyisocyanate obtained by modifying them can be used as the isocyanate compound.

[0084] The phenolic foam can be formed using, for example, a phenolic resin, a foaming agent, and a hardener.

[0085] The foaming agent may be, for example, a fluorine-based foaming agent. Specifically, a fluorocarbon material with low thermal conductivity, particularly a hydrofluorocarbon (HFC) material, may be used. The raw material for the foam insulation may contain, for example, a catalyst, an additive, a flame retardant, etc.

[0086] As the insulating material, materials other than foam insulating materials such as wood veneer, plywood, and particle board, and FRP (fiber reinforced plastic) can also be used.

[0087] The shape of the substrate in plan view is not particularly limited, and it can be cut into any shape, such as a rectangle, a polygon, or a circle, for use.

[0088] 3. Colored materials In the colored member of the present disclosure, the above-mentioned heat shielding laminate may be disposed on at least one surface of a substrate. For example, (i) the above-mentioned heat shielding laminate may be disposed on both surfaces of the substrate, (ii) the above-mentioned heat shielding laminate may be disposed on one surface of the substrate, and the other surface of the substrate may be exposed, or (iii) the above-mentioned heat shielding laminate may be disposed on one surface of the substrate, and another surface material may be disposed on the other surface of the substrate.

[0089] As the other surface materials, surface materials generally used for insulating boards can be used, such as glass paper, plastic sheets, moisture-proof paper, calcium carbonate paper, resin-impregnated paper, coated paper, nonwoven fabric, etc.

[0090] 4.Other When the colored member is a foam insulation board, a general method for manufacturing a foam insulation board can be used. For example, a mold (foam molding mold) consisting of a lower mold and an upper mold and having a cavity of a foam insulation material of a desired thickness is used, and the heat shielding laminate of the present disclosure is placed on the bottom surface of the cavity of the lower mold with the metal layer facing up, and the foam insulation material composition is injected into the cavity with the temperature controlled at, for example, 120°C. Then, the upper mold of the mold in which another heat shielding laminate of the present disclosure is set so that the metal layer faces down is placed over the lower mold of the mold and closed, and the foam insulation material composition is foamed in the cavity, and then the molded product is demolded. The closed cell ratio is preferably 10 to 40%. The closed cell ratio in the present invention is a value measured in accordance with ASTM D 2856. The rigid urethane foam used in the foam insulation material has self-adhesiveness and is bonded to the surface material by the above-mentioned integrated foaming method. In addition, a general adhesive may be used on the surface of the surface material that contacts the foam insulation material in order to improve adhesion.

[0091] The colored member in this embodiment can be used as a building material that requires heat insulation, non-combustibility, and design. The building material may be an interior material or an exterior material, but is preferably an interior material. Examples of the interior material include ceilings, walls, floors, etc. of buildings such as houses, gymnasiums, indoor pools, stores, and hospitals. In particular, since the foam insulation board having the thermal barrier laminate of this embodiment is lightweight, it is preferable to use it for the ceiling of a building, since this can reduce the risk of the ceiling collapsing.

[0092] The present disclosure is not limited to the above-described embodiments. The above-described embodiments are merely examples, and anything that has substantially the same configuration as the technical idea described in the claims of the present disclosure and exhibits similar effects is included in the technical scope of the present disclosure. EXAMPLES

[0093] The present disclosure will be described in further detail below with reference to examples and comparative examples.

[0094] [Example 1] As the metal layer, a 35 μm thick aluminum foil 1 (Toyo Aluminum Co., Ltd., Aluminum Foil 1N30) was prepared. The reflectance of the matte side of the aluminum foil before processing was 80% or more. The aluminum foil was placed with the matte side facing up, and white ink 1 (Opicoat NCA White, manufactured by Osaka Printing Ink Co., Ltd., which is mainly composed of nitrocellulose) was applied to the entire surface of the aluminum foil using a selected Myabar to the thickness shown in Table 1, and then dried. In this way, a heat shielding laminate having a metal layer and a colored layer was produced.

[0095] [Example 2] As the metal layer, aluminum foil 1 having a thickness of 35 μm was prepared as in Example 1. The matte surface of the aluminum foil 1 was placed facing upward, and the above-mentioned white ink 1 was applied to the entire surface of the aluminum foil 1 using a meyer bar selected so as to have a thickness shown in Table 1, and then dried. In this way, a heat shielding laminate having a metal layer and a colored layer was produced.

[0096] [Example 3] As the metal layer, aluminum foil 1 having a thickness of 35 μm was prepared as in Example 1. Titanium oxide was added to the white ink 1 used in Example 1, and the carbon content was adjusted to obtain white ink 2. The matte surface of aluminum foil 1 was placed facing upward, and the white ink 2 was applied to the entire surface of aluminum foil 1 using a meyer bar selected to give a thickness shown in Table 1, and then dried. In this way, a heat shielding laminate having a metal layer and a colored layer was produced.

[0097] [Example 4] As the metal layer, aluminum foil 1 having a thickness of 35 μm was prepared as in Example 1. A transparent medium was added to the white ink 1 used in Example 1 to adjust the carbon content, and white ink 3 was obtained. The matte surface of aluminum foil 1 was placed facing upward, and the white ink 3 was applied to the entire surface of aluminum foil 1 using a meyer bar selected to have a thickness shown in Table 1, and then dried. In this way, a heat shielding laminate having a metal layer and a colored layer was produced.

[0098] [Example 5] As the metal layer, aluminum foil 1 having a thickness of 35 μm was prepared as in Example 1. The matte surface of the aluminum foil 1 was placed facing upward, and the above-mentioned white ink 1 was applied to the entire surface of the aluminum foil 1 using a meyer bar selected so as to have a thickness shown in Table 1, and then dried. In this way, a heat shielding laminate having a metal layer and a colored layer was produced.

[0099] [Example 6] As the metal layer, aluminum foil 1 having a thickness of 35 μm was prepared as in Example 1. Titanium oxide was added to the white ink 1 used in Example 1, and the carbon content was adjusted to obtain white ink 4. The matte surface of aluminum foil 1 was placed facing upward, and the white ink 4 was applied to the entire surface of aluminum foil 1 using a meyer bar selected to have a thickness shown in Table 1, and then dried. In this way, a heat shielding laminate having a metal layer and a colored layer was produced.

[0100] [Comparative Example 1] As the metal layer, aluminum foil 1 having a thickness of 35 μm was prepared as in Example 1. The matte surface of the aluminum foil 1 was placed facing upward, and the above-mentioned white ink 1 was applied to the entire surface of the aluminum foil 1 using a meyer bar selected so as to have a thickness shown in Table 1, and then dried. In this way, a heat shielding laminate having a metal layer and a colored layer was produced.

[0101] [Comparative Example 2] As the metal layer, aluminum foil 1 having a thickness of 35 μm was prepared as in Example 1. A transparent medium was added to the white ink 1 used in Example 1 to adjust the carbon content, and white ink 5 was obtained. The matte surface of aluminum foil 1 was placed facing upward, and the white ink 5 was applied to the entire surface of aluminum foil 1 using a meyer bar selected to have a thickness shown in Table 1, and then dried. In this way, a heat shielding laminate having a metal layer and a colored layer was produced.

[0102] (Reflectance measurement) The reflectance of the colored layer of the heat shielding laminate obtained in Examples 1 to 6, Comparative Example 1, and Comparative Example 2 was measured. <Reflectance measurement (before heat treatment)> Using an ultraviolet-visible-infrared spectrophotometer (V-670 manufactured by JASCO Corporation) and an integrating sphere unit, light with wavelengths of 300 nm to 2500 nm was irradiated at an incident angle of 5° onto measurement sites on the surface of the colored layer of a sample piece of the heat shielding laminate, and the reflectance at each wavelength (nm) at 1 nm intervals was measured with the spectrophotometer, and the average value of the measured values ​​at all wavelengths was calculated. Measurements were similarly performed on five measurement sites, and the average value of the five sites was calculated, and the average value was regarded as the reflectance of the colored layer. The results are shown in Table 1.

[0103] <Reflectance measurement (before heat treatment)> The reflectance of the thermal barrier laminate after heat treatment at 300° C. for 60 minutes in a muffle furnace was measured in the same manner as above. The results are shown in Table 1. <Calculation of reflectance change rate> The reflectance change rate was calculated using the following formula. The results are shown in Table 1. Reflectance change rate (%) = {(reflectance before heat treatment R0 - reflectance after heat treatment R 300 ) / (reflectance before heat treatment R0)}×100(%)

[0104] (Measurement of carbon content) For the thermal barrier laminates obtained in Examples 1 to 6 and Comparative Examples 1 and 2, partial composition analysis of the colored layers was carried out using the following composition analyzer (X-ray fluorescence analyzer: XRF). ·Equipment used: Rigaku wavelength dispersive XRF device ZSX PrimusIV As a pretreatment, the thermal barrier laminate was cut into a 4cm x 4cm sample and fixed in a sample folder. ·X-ray: Rh tube ·3.8kW (40kV · 95mA) Measurement diameter: 30mmφ Measurement atmosphere: vacuum Measurement range: 3B~92U Carbon content (%) = (weight percent of carbon element (C) / weight percent of all detected elements) x 100 (%)

[0105] (Heat insulation evaluation) For the thermal barrier laminates obtained in Examples 1 to 6, Comparative Example 1, and Comparative Example 2, the temperature of the rear surface side of the thermal barrier laminate was measured using a thermocouple from the rear surface side (metal layer) of the thermal barrier laminate in accordance with the cone calorimeter test conditions specified in ISO5660-1:2015. The device used was a cone calorimeter C-3 manufactured by Toyo Seiki Seisakusho Co., Ltd. (radiant heat amount 50 kW / m 2 The heat shielding properties were evaluated based on the following criteria. The results are shown in Table 1.

[0106] Evaluation criteria A: The temperature after 20 minutes of heating could be kept below 300°C. B: The temperature exceeded 300°C after 20 minutes of heating.

[0107] (Film-forming property evaluation) The film-forming properties of the colored layer were visually observed and evaluated based on the following evaluation criteria. A: There were no uneven spots or cracks after drying, and a uniform colored layer was obtained. B: There were uneven spots and cracks after drying.

[0108] [Table 1]

[0109] As shown in Table 1, the heat shielding laminates of Examples 1 to 6, in which the rate of change in reflectance after heat treatment at 300°C for 60 minutes was equal to or less than a predetermined value, suppressed temperature rise due to radiant heat. On the other hand, it was confirmed that the heat shielding laminates of Comparative Example 1 and Comparative Example 2, in which the rate of change in reflectance was greater than the predetermined value, were inferior in heat shielding properties. Note that Comparative Example 1 had a thick colored layer, and Comparative Example 2 had a high carbon content. It was also confirmed that if the colored layer was too thin, coating unevenness occurred (Example 5). It was confirmed that if the carbon content in the colored layer was too low, cracks occurred after drying (Example 6).

[0110] That is, the present disclosure provides the following inventions.

[0111] [1] A thermal barrier laminate having a metal layer and a colored layer disposed on one surface side of the metal layer, A heat shielding laminate, in which the surface of the heat shielding laminate on the colored layer side has a change in reflectance after heat treatment at 200° C. for 60 minutes that is greater than 0% and is not greater than 20%.

[0112] [2] The heat shielding laminate according to [1], wherein the metal layer is an aluminum foil or an aluminum alloy foil, or a vapor-deposited film containing aluminum or an aluminum alloy.

[0113] [3] The heat shielding laminate according to [1] or [2], wherein the colored layer has a thickness of 0.3 μm or more and 2.0 μm or less.

[0114] [4] The heat shielding laminate according to any one of [1] to [3], wherein the colored layer contains a carbon component, and the content of the carbon component is 5% or more and 60% or less.

[0115] [5] The heat shielding laminate according to any one of [1] to [4], further comprising a transparent protective film on the side of the colored layer opposite to the side of the metal layer.

[0116] [6] The heat shielding laminate according to any one of [1] to [5], further comprising an adhesion layer on the side of the metal layer opposite to the side of the colored layer.

[0117] [7] A thermal barrier laminate having a metal layer and a colored layer disposed on one surface side of the metal layer, The surface of the heat shielding laminate on the colored layer side has a reflectance of 75% or more, and the change in reflectance after heat treatment at 300° C. for 60 minutes is 20% or less.

[0118] [8] The heat shielding laminate according to [7], wherein the metal layer is an aluminum foil or an aluminum alloy foil, or a vapor-deposited film containing aluminum or an aluminum alloy.

[0119] [9] The heat shielding laminate according to [7] or [8], wherein the thickness of the colored layer is 0.3 μm or more and 2.0 μm or less.

[0120]

[10] The heat shielding laminate according to any one of [7] to [9], wherein the colored layer contains a carbon component, and the content of the carbon component is 5% or more and 60% or less.

[0121]

[11] The heat shielding laminate according to any one of [7] to

[10] , further comprising a transparent protective film on the side of the colored layer opposite to the side of the metal layer.

[0122]

[12] The heat shielding laminate according to any one of [7] to

[11] , further comprising an adhesion layer on the side of the metal layer opposite to the side of the colored layer.

[0123]

[13] A substrate; and a thermal barrier laminate according to any one of claims [1] to

[12] , which is disposed on at least one surface of the substrate; The heat shield laminate is disposed so that the metal layer faces the base body.

[0124]

[14] The colored member according to

[13] , wherein the substrate is a heat insulating material. [Explanation of symbols]

[0125] 1 ... Heat shielding laminate 2 … Metal layer 3 … Colored layer 4 … Transparent protective film 5 … Adhesion layer 11 ... Base (insulation material) 100... Colored material (insulation board)

Claims

1. A thermal barrier laminate having a metal layer and a colored layer disposed on one surface side of the metal layer, A heat shielding laminate, wherein a change in reflectance of the surface of the heat shielding laminate on the colored layer side after heat treatment at 200° C. for 60 minutes is greater than 0% and less than 20%.

2. The thermal barrier laminate according to claim 1 , wherein the metal layer is an aluminum foil or an aluminum alloy foil, or a vapor-deposited film containing aluminum or an aluminum alloy.

3. The heat shielding laminate according to claim 1 , wherein the colored layer has a thickness of 0.3 μm or more and 2.0 μm or less.

4. The thermal barrier laminate according to claim 1 , wherein the colored layer contains a carbon component, and the content of the carbon component is 5% or more and 60% or less.

5. The heat shielding laminate according to claim 1 , further comprising a transparent protective film on a surface of the colored layer opposite to a surface of the colored layer facing the metal layer.

6. The thermal barrier laminate according to claim 1 , further comprising an adhesive layer on a surface of the metal layer opposite to a surface of the metal layer on which the colored layer is disposed.

7. A thermal barrier laminate having a metal layer and a colored layer disposed on one surface side of the metal layer, The surface of the heat-shielding laminate on the colored layer side has a reflectance of 75% or more, and a rate of change in reflectance after heat treatment at 300° C. for 60 minutes is 20% or less.

8. The heat shield laminate according to claim 7 , wherein the metal layer is an aluminum foil or an aluminum alloy foil, or a vapor-deposited film containing aluminum or an aluminum alloy.

9. The heat shielding laminate according to claim 7 , wherein the colored layer has a thickness of 0.3 μm or more and 2.0 μm or less.

10. The thermal barrier laminate according to claim 7 , wherein the colored layer contains a carbon component, and the content of the carbon component is 5% or more and 60% or less.

11. The heat shielding laminate according to claim 7 , further comprising a transparent protective film on a surface of the colored layer opposite to a surface of the colored layer facing the metal layer.

12. The thermal barrier laminate according to claim 7 , further comprising an adhesive layer on a surface of the metal layer opposite to a surface of the metal layer on which the colored layer is disposed.

13. A substrate; and a thermal barrier laminate according to any one of claims 1 to 12, which is disposed on at least one surface of the base body; The heat shield laminate is disposed so that the metal layer faces the base body.

14. The colored member according to claim 13 , wherein the substrate is a thermal insulating material.

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