Cooling heat insulation cloth

Abstract

The utility model relates to a cooling heat-insulating cloth, which comprises a base cloth and a cooling heat-insulating layer compounded on the surface of the base cloth through an adhesive layer, the cooling heat-insulating layer comprises a silver metal layer, an aerogel layer and a cooling layer which are sequentially laminated on the adhesive layer, or comprises an aerogel layer, a silver metal layer and a cooling layer which are sequentially laminated on the adhesive layer, the reflectivity of the cooling layer is greater than or equal to 85%, and the emissivity of an atmosphere window wave band of 8-13 [mu] m is greater than or equal to 90%. According to the cooling and heat-insulating cloth, the cooling layer can reflect sunlight and convert heat into infrared rays of 8-13 microns, the infrared rays are radiated through an atmosphere window of 8-13 microns, the aerogel layer has an excellent heat-insulating effect, and the silver metal layer can reflect heat radiation, so that the temperature of the surface of the base cloth can be effectively reduced; meanwhile, heat is prevented from being transferred to the base cloth. Furthermore, outdoor articles such as tents, skyscreens and the like made of the cooling and heat-insulating cloth can effectively reduce the temperature in a surrounding range and improve the comfort.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a cooling and heat-insulating cloth. Background Art

[0002] Tents, awnings and other outdoor products are one of the essential equipment for outdoor sports. However, since tents, awnings and other outdoor products are usually made of materials such as waterproof cloth, their heat insulation effect is not good. Therefore, when encountering hot weather, the areas enclosed by tents and awnings are extremely stuffy, affecting comfort. Utility Model Content

[0003] Based on this, it is necessary to provide a cooling and insulating cloth to address the above problems. The cooling and insulating cloth has excellent cooling and insulating effects, so that outdoor products such as tents and awnings made of the cooling and insulating cloth can effectively reduce the temperature within the enclosure and improve comfort when encountering hot weather.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a cooling and heat-insulating cloth, which includes a base cloth and a cooling and heat-insulating layer compounded on the surface of the base cloth through an adhesive layer, the cooling and heat-insulating layer includes a silver metal layer, an aerogel layer and a cooling layer stacked in sequence on the adhesive layer, or the cooling and heat-insulating layer includes an aerogel layer, a silver metal layer and a cooling layer stacked in sequence on the adhesive layer, wherein the reflectivity of the cooling layer is greater than or equal to 85%, and the emissivity of the atmospheric window band of 8μm-13μm is greater than or equal to 90%.

[0005] In one embodiment, the fibers of the base fabric are hollow fibers.

[0006] In one embodiment, the silver metal layer is a silver layer, an aluminum layer or a silver-aluminum composite layer.

[0007] In one embodiment, the silver metal layer is a silver paste coating, a silver foil, a silver-aluminum composite paste layer or an aluminum foil.

[0008] In one embodiment, the aerogel layer is a silicon-based aerogel layer or a metal oxide-based aerogel layer.

[0009] In one embodiment, the aerogel layer is a silica aerogel layer.

[0010] In one of the embodiments, the porosity of the aerogel layer is greater than or equal to 80%.

[0011] In one embodiment, the cooling and heat-insulating cloth also satisfies at least one of the following conditions:

[0012] (1) The thickness of the base fabric is 0.1 mm to 0.5 mm;

[0013] (2) The thickness of the adhesive layer is 5 μm-30 μm;

[0014] (3) The thickness of the silver metal layer is 0.01 mm to 0.03 mm;

[0015] (4) The thickness of the aerogel layer is 0.01 mm to 0.08 mm;

[0016] (5) The thickness of the cooling layer is 0.01 mm to 0.08 mm.

[0017] In one of the embodiments, a weather-resistant protective layer is laminated on the surface of the temperature-reducing and heat-insulating layer facing away from the adhesive layer.

[0018] In one embodiment, the weather-resistant protective layer further satisfies at least one of the following conditions:

[0019] (1) The thickness of the weather-resistant protective layer is 1 μm-3 μm;

[0020] (2) The water contact angle of the weather-resistant protective layer is greater than 90°.

[0021] In the cooling and heat-insulating cloth of the utility model, the cooling layer not only has excellent solar reflectivity, can reflect most of the sunlight back into the atmosphere, and block the sunlight band from reaching the base cloth, but also can convert heat into 8μm-13μm infrared rays to radiate through the 8μm-13μm atmospheric window, which has an excellent cooling effect. The interior of the aerogel layer contains a large amount of air, which has an excellent heat-insulating effect. The silver metal layer can reflect heat radiation, which can further reduce the heat transfer to the base cloth. Therefore, the cooling and heat-insulating layer can effectively reduce the temperature of the surface of the base cloth, and at the same time block the heat transfer to the base cloth. Furthermore, outdoor products such as tents and canopies made of the cooling and heat-insulating cloth of the utility model can effectively reduce the temperature within the enclosure of tents, canopies, etc., and improve comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a structural schematic diagram of an embodiment of the cooling and heat-insulating cloth of the utility model;

[0024] Figure 2This is a schematic structural diagram of another embodiment of the cooling and heat-insulating cloth of the utility model.

[0025] Figure numerals: 10, base fabric; 20, adhesive layer; 30, cooling and heat insulation layer; 301, silver metal layer; 302, aerogel layer; 303, cooling layer; 40, weather-resistant protective layer. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0031] like Figure 1 and Figure 2 As shown, the cooling and heat-insulating cloth provided by the utility model mainly includes a stacked base cloth 10 and a cooling and heat-insulating layer 30, and the cooling and heat-insulating layer 30 is compounded on the surface of the base cloth 10 through an adhesive layer 20, so as to improve the adhesion between the base cloth 10 and the cooling and heat-insulating layer 30. Optionally, the adhesive layer 20 is preferably a polyurethane adhesive layer or an acrylic adhesive layer, and the thickness of the adhesive layer 20 is preferably 5μm-30μm, so as to make the cooling and heat-insulating layer 30 and the base cloth 10 have a better bonding force.

[0032] When the cooling and heat-insulating cloth of the present invention is in use, the cooling and heat-insulating layer 30 is the light-incoming side. In order to make the cooling and heat-insulating layer 30 achieve a better cooling effect, specifically, Figure 1 As shown, the cooling and heat-insulating layer 30 includes a silver metal layer 301, an aerogel layer 302 and a cooling layer 303 which are sequentially stacked on the adhesive layer 20, or, as shown Figure 2 As shown, the cooling and heat-insulating layer 30 includes an aerogel layer 302 , a silver metal layer 301 and a cooling layer 303 which are sequentially stacked on the adhesive layer 20 .

[0033] Among them, the reflectivity of the cooling layer 303 is greater than or equal to 85%, and the emissivity of the atmospheric window band of 8μm-13μm is greater than or equal to 90%. It not only has excellent sunlight reflectivity, but can also reflect most of the sunlight back into the atmosphere, blocking the sunlight band from reaching the base fabric 10 and entering the side of the base fabric 10 away from the cooling and heat insulation layer 30, and can also convert heat into 8μm-13μm infrared rays to radiate through the 8μm-13μm atmospheric window, thereby having an excellent cooling effect.

[0034] Specifically, the cooling layer 303 is mainly a composite layer of resin and radiation cooling particles, wherein the resin is preferably at least one of polyester, polyacrylate, polyamide, polyurethane, polyolefin, and fluororesin, including but not limited to polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polyethylene terephthalate-1,4-cyclohexanedimethanol (PETG), polyethylene terephthalate-1,4-cyclohexanedimethanol (PCTG), polycaprolactam (PA6), polyhexamethylene adipamide (PA66), polydodecanedimethanol (PDEM ... polybutylene terephthalate-1,4-cyclohexanedimethanol (PETG), polyethylene terephthalate-1,4-cyclohexanedimethanol (PCTG), polycaprolactam (PA6), polyhexamethylene adipamide (PA66), polydodecanedimethanol (PDEM), polybutylene terephthalate (PBT), polybutylene terephthalate (PEN), polybutylene terephthalate-1,4-cyclohexanedimethanol (PETG), polyethylene terephthalate-1,4-cyclohexanedimethanol (PCTG), polycaprolactam (PA6), polyhexamethylene adipamide (PA66), polydodecanedimethanol (PDEM), polybutylene terephthalate (PDEM), polybutylene terephthalate (PEN), polybutylene terephthalate-1,4-cyclohexanedimethanol (PETG), polyethylene terephthalate-1 Polyamide (PA12), polydecanediamide (PA1010), polyethylene (PE), polypropylene (PC), poly-4-methyl-1-pentene (TPX), fluoroethylene propylene copolymer (FEP), acrylonitrile-butadiene-styrene plastic (ABS), polymethyl methacrylate (PMMA), polyvinylidene fluoride (PVDF), ethylene chlorotrifluoroethylene copolymer (ECTFE), etc., and the radiation cooling particles are selected from at least one of 0.01μm-50μm barium sulfate particles, titanium dioxide particles, silicon nitride particles, aluminum oxide particles, silicon oxide particles, calcium fluoride particles, magnesium phosphate particles or zinc oxide particles.

[0035] Optionally, the thickness of the cooling layer 303 is 0.01 mm-0.08 mm. With such a configuration, the cooling and heat-insulating cloth can have both excellent sunlight reflectivity and atmospheric window emissivity.

[0036] In the cooling and heat-insulating layer 30 , the interior of the aerogel layer 302 contains a large amount of air, which has an excellent heat-insulating effect and can further block heat from being transferred to the base fabric 10 .

[0037] Optionally, the porosity of the aerogel layer 302 is greater than or equal to 80%. This configuration can make the aerogel layer 302 have a better thermal insulation effect.

[0038] Optionally, the aerogel layer 302 is a silicon-based aerogel layer or a metal oxide-based aerogel layer, such as a silica aerogel layer, an alumina aerogel layer, a zirconia aerogel layer, etc., preferably a silica aerogel layer, which has the characteristics of high transparency, low thermal conductivity and high specific surface area.

[0039] Optionally, the thickness of the aerogel layer 302 is 0.01 mm-0.08 mm. With such a configuration, the cooling and heat-insulating cloth can have an excellent heat-insulating effect and control the production cost.

[0040] In the temperature-reducing and heat-insulating layer 30 , the silver metal layer 301 is mainly used to reflect heat radiation, thereby further reducing heat transfer to the base fabric 10 .

[0041] Optionally, the silver metal layer 301 is a silver layer, an aluminum layer or a silver-aluminum composite layer, wherein the silver layer may be a silver paste layer or a silver foil, the aluminum layer may be an aluminum paste layer or an aluminum foil, and the silver-aluminum composite layer may be a silver-aluminum composite paste layer. Preferably, the silver metal layer 301 is a silver-aluminum composite paste layer, and the silver-aluminum composite paste layer has excellent thermal radiation reflection performance through the compound of silver powder and aluminum powder.

[0042] Optionally, the thickness of the silver metal layer 301 is 0.01 mm-0.03 mm. This configuration can ensure that the cooling and heat-insulating cloth has an excellent reflective effect on heat radiation.

[0043] Therefore, the temperature-reducing and heat-insulating layer 30 of the present invention can effectively reduce the temperature of the surface of the base fabric 10 , while preventing heat from being transferred to the base fabric 10 .

[0044] Optionally, the fibers of the base cloth 10 are hollow fibers, which contain a large amount of air, so that the base cloth 10 itself has excellent thermal insulation properties and can block heat from being transferred to the side of the base cloth 10 away from the cooling and insulation layer 30. At the same time, the hollow fibers are light in weight and can reduce the weight of the cooling and insulation cloth.

[0045] Optionally, the thickness of the base fabric 10 is 0.1 mm to 0.5 mm. This configuration can ensure that the cooling and heat-insulating fabric has excellent mechanical properties and excellent heat-insulating effects.

[0046] In some embodiments, the surface of the cooling and heat-insulating layer 30 of the utility model facing away from the adhesive layer 20 is also laminated with a weather-resistant protective layer 40, which can effectively extend the service life of the cooling and heat-insulating cloth. Optionally, the weather-resistant protective layer is mainly a composite layer of fluorine-containing resin and inorganic nanoparticles, wherein the fluorine-containing resin includes but is not limited to ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), polyvinyl formal (PVF), polychlorotrifluoroethylene (PCTFE), fluoroolefin-vinyl ether copolymer (FEVE), polytetrafluoroethylene (PTFE), ethylene chlorotrifluoroethylene copolymer (ECTFE), fluorine ethylene propylene copolymer (FEP), fusible polytetrafluoroethylene (PFA), etc., and the inorganic nanoparticles include but are not limited to titanium oxide, silicon oxide, etc.

[0047] Optionally, the water contact angle of the weather-resistant protective layer 40 is greater than 90°, further preferably greater than or equal to 100°, and more preferably greater than or equal to 120°, so that the weather-resistant protective layer 40 has excellent self-cleaning ability.

[0048] Optionally, the thickness of the weather-resistant protective layer 40 is 1 μm-3 μm. Such a configuration can improve the self-cleaning and dirt-resistance properties of the cooling and heat-insulating cloth.

[0049] The cooling and heat-insulating cloth of the utility model is mainly used for making outdoor articles such as tents and awnings, and can effectively reduce the temperature within the enclosure of the tents and awnings, and improve the comfort.

[0050] Of course, the cooling and heat-insulating cloth of the utility model can also be used for the outer surfaces of enclosure structures such as public buildings, petrochemical storage tanks, power cabinets, and communication cabinets, and can achieve energy-free cooling of the enclosure structures.

[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A cooling and heat-insulating cloth, characterized in that: The cooling and heat-insulating cloth comprises a base cloth and a cooling and heat-insulating layer compounded on the surface of the base cloth through an adhesive layer, wherein the cooling and heat-insulating layer comprises a silver metal layer, an aerogel layer and a cooling layer stacked in sequence on the adhesive layer, or the cooling and heat-insulating layer comprises an aerogel layer, a silver metal layer and a cooling layer stacked in sequence on the adhesive layer, wherein the reflectivity of the cooling layer is greater than or equal to 85%, and the emissivity of the atmospheric window band of 8μm-13μm is greater than or equal to 90%.

2. The cooling and heat-insulating cloth according to claim 1, characterized in that: The fibers of the base fabric are hollow fibers.

3. The cooling and heat-insulating cloth according to claim 1, characterized in that: The silver metal layer is a silver layer, an aluminum layer or a silver-aluminum composite layer.

4. The cooling and heat-insulating cloth according to claim 3, characterized in that: The silver metal layer is a silver paste coating, a silver foil, a silver-aluminum composite paste layer or an aluminum foil.

5. The cooling and heat-insulating cloth according to claim 1, characterized in that: The aerogel layer is a silicon-based aerogel layer or a metal oxide-based aerogel layer.

6. The cooling and heat-insulating cloth according to claim 5, characterized in that: The aerogel layer is a silicon dioxide aerogel layer.

7. The cooling and heat-insulating cloth according to claim 1, characterized in that: The porosity of the aerogel layer is greater than or equal to 80%.

8. The cooling and heat-insulating cloth according to claim 1, characterized in that: The cooling and heat-insulating cloth also satisfies at least one of the following conditions: (1) The thickness of the base fabric is 0.1 mm to 0.5 mm; (2) The thickness of the adhesive layer is 5 μm-30 μm; (3) The thickness of the silver metal layer is 0.01 mm to 0.03 mm; (4) The thickness of the aerogel layer is 0.01 mm to 0.08 mm; (5) The thickness of the cooling layer is 0.01 mm to 0.08 mm.

9. The cooling and heat-insulating cloth according to any one of claims 1 to 8, characterized in that: The surface of the temperature-reducing and heat-insulating layer away from the adhesive layer is also laminated with a weather-resistant protective layer.

10. The cooling and heat-insulating cloth according to claim 9, characterized in that: The weather-resistant protective layer also meets at least one of the following conditions: (1) The thickness of the weather-resistant protective layer is 1 μm-3 μm; (2) The water contact angle of the weather-resistant protective layer is greater than 90°.

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