Mould, preparation method of vacuum insulation panel and heat preservation device

Abstract

The invention relates to a mold, the mold is used for preparing a vacuum insulation panel, the mold comprises a first mold assembly and a second mold assembly, a cavity is defined between the first mold assembly and the second mold assembly, and the cavity is used for containing vacuum insulation panel core material slurry and a vacuum insulation panel membrane material; the joint of the first mold assembly and the second mold assembly is sealed; at least one of the first mold assembly and the second mold assembly is provided with a ventilation structure enabling the cavity to communicate with the external environment, the ventilation structure is breathable, and the ventilation structure cannot enable vacuum heat insulation plate core material slurry to penetrate through. The mold further comprises a detachable sealing part which is used for blocking the ventilation structure. At least one of the first mold assembly and the second mold assembly is further provided with a ventilation opening used for vacuumizing the cavity. The mold provided by the invention can be used for preparing the vacuum insulated panel which is in a 3D shape, free of a splicing structure and high in heat preservation capacity in an integral forming manner.

Description

Technical Field

[0001] This application relates to thermal insulation technology, and particularly to vacuum insulation panels. Background Art

[0002] A vacuum insulation panel is a kind of vacuum insulation material, mainly composed of a filling material, a getter component and a high-barrier protective film. It can effectively avoid heat transfer caused by air convection, thus greatly reducing its thermal conductivity. Due to the excellent thermal insulation performance of the vacuum insulation panel, it has been widely used in thermal insulation fields such as refrigerators, freezers, and cold chains. In actual use, vacuum insulation panels are often required for multiple surfaces of a thermal insulation device. For example, multiple vacuum insulation panels of different sizes are attached to the upper side panel, top, and bottom of a refrigerator to ensure thermal insulation for each side of the refrigerator. However, at the corners of the thermal insulation device, the vacuum insulation panels are mainly connected together by splicing, and the thermal insulation ability at the splicing position is poor, inevitably affecting the overall thermal insulation effect. Summary of the Invention

[0003] This application provides a mold, a preparation method of a vacuum insulation panel, and a thermal insulation device to solve the technical problem that the connection of vacuum insulation panels by splicing affects the thermal insulation effect.

[0004] In a first aspect, an embodiment of this application provides a mold for preparing a vacuum insulation panel. The mold includes a first mold component and a second mold component. A cavity is enclosed between the first mold component and the second mold component. The cavity is used to accommodate the core material slurry of the vacuum insulation panel and the film material of the vacuum insulation panel, and the connection between the first mold component and the second mold component is sealed;

[0005] At least one of the first mold component and the second mold component is provided with a breathable structure that communicates the cavity with the external environment. The breathable structure is breathable and the core material slurry of the vacuum insulation panel cannot pass through the breathable structure;

[0006] The mold further includes a detachable sealing component for plugging the breathable structure;

[0007] At least one of the first mold component and the second mold component is further provided with a ventilation opening for evacuating the cavity.

[0008] The cavity described in this application can be used to accommodate the slurry of the vacuum insulation panel core material. The breathable structure can connect the cavity to the external environment, enabling the moisture of the slurry of the vacuum insulation panel core material to evaporate. At the same time, the breathable structure cannot allow the slurry of the vacuum insulation panel core material to pass through, preventing the slurry of the vacuum insulation panel core material from flowing out through the breathable structure, thus facilitating the smooth forming. After the slurry of the vacuum insulation panel core material forms the vacuum insulation panel core, the vacuum insulation panel core and the vacuum insulation panel membrane material can be assembled and then added into the cavity together to further prepare the vacuum insulation panel. The sealing component can block the breathable structure. After the breathable structure is blocked, the cavity can be evacuated through the ventilation opening, thereby evacuating the vacuum insulation panel core. Since the cavity can be of any shape, the mold provided in this application can be prepared by an integral molding method to produce a vacuum insulation panel with a 3D shape. The prepared vacuum insulation panel has no splicing structure and has strong heat preservation ability.

[0009] In some embodiments of this application, at least one of the first mold assembly and the second mold assembly includes a heating device.

[0010] In some embodiments of this application, the heating device is at least one of an electric heating wire, an infrared heating device, and a microwave heating device.

[0011] In some embodiments of this application, the breathable structure is at least one of small holes or slits.

[0012] In some embodiments of this application, the diameter of the small holes is 3 - 30 μm, and the width of the slits is 3 - 30 μm.

[0013] In some embodiments of this application, a sealing strip is provided at the joint of the first mold assembly and the second mold assembly.

[0014] In some embodiments of this application, the sealing component is a sealing membrane material that can fit on the surface of the first mold assembly or the second mold assembly.

[0015] In some embodiments of this application, at least one of the first mold assembly and the second mold assembly is provided with a grouting opening, which is communicated with the cavity, and the slurry of the vacuum insulation panel core material is injected into the cavity through the grouting opening.

[0016] In some embodiments of this application, the grouting opening and the ventilation opening are of the same structure.

[0017] In a second aspect, an embodiment of this application provides a method for preparing a vacuum insulation panel. The preparation method includes the following steps:

[0018] Provide the mold according to any embodiment of the first aspect, provide the slurry for the core material of the vacuum insulation panel, and add the slurry for the core material of the vacuum insulation panel into the cavity;

[0019] Keep the breathable structure in a breathable state and evaporate the moisture in the slurry for the core material of the vacuum insulation panel, so that the slurry for the core material of the vacuum insulation panel is formed into the core material of the vacuum insulation panel;

[0020] Provide a vacuum insulation panel film material adapted to the shape of the core material of the vacuum insulation panel, attach the vacuum insulation panel film material to both sides of the core material of the vacuum insulation panel, and set a heat-sealing edge material at the joint of the edges of the vacuum insulation panel film material to form a pre-assembled component;

[0021] Re-add the pre-assembled component into the cavity and block the breathable structure through the sealing member;

[0022] Vacuum the cavity through the ventilation opening and perform heat-sealing edge treatment on the pre-assembled component by heating the heat-sealing edge material to obtain the vacuum insulation panel.

[0023] In some embodiments of the present application, the slurry for the core material of the vacuum insulation panel includes organic fibers, water, a fiber dispersant, and a cross-linking agent.

[0024] In some embodiments of the present application, the organic fiber is at least one of polyester, acrylic, nylon, polypropylene, aramid, ultra-high molecular weight polyethylene fiber, polypropylene fiber, poly(p-phenylene benzobisoxazole) fiber, polybenzimidazole fiber, polyphenylene pyridinediimidazole fiber, polyimide fiber, carbon fiber; and / or,

[0025] The fiber dispersant is at least one of polyethylene oxide, sodium alginate, carboxymethyl cellulose, hydroxyethyl cellulose, sodium lignin sulfonate, polycarboxylic acid, polyphosphate; and / or,

[0026] The cross-linking agent is at least one of tetraethyl orthosilicate, tetramethyl orthosilicate, trimethoxysilane, N-methylolacrylamide, glycidyl ether.

[0027] In some embodiments of the present application, based on the mass percentage of the slurry for the core material of the vacuum insulation panel, the content of water is 40% - 90%; and / or,

[0028] In the slurry for the core material of the vacuum insulation panel, the mass of the fiber dispersant is 0.5% - 5% of the mass of the organic fiber; and / or,

[0029] In the slurry for the core material of the vacuum insulation panel, the mass of the cross-linking agent is 0.1% - 0.5% of the mass of the organic fiber.

[0030] In some embodiments of the present application, adding the vacuum insulation panel core material slurry into the cavity includes the following steps:

[0031] Coat the vacuum insulation panel core material slurry onto a predetermined surface of the first mold assembly or the second mold assembly, where the predetermined surface is the surface for forming the cavity;

[0032] Assemble the first mold assembly and the second mold assembly to form a cavity filled with the vacuum insulation panel core material slurry.

[0033] In some embodiments of the present application, at least one of the first mold assembly and the second mold assembly is provided with a grouting opening, and the grouting opening communicates with the cavity. Adding the vacuum insulation panel core material slurry into the cavity includes the following steps:

[0034] Assemble the first mold assembly and the second mold assembly;

[0035] Inject the vacuum insulation panel core material slurry into the cavity through the grouting opening.

[0036] In some embodiments of the present application, the vacuum insulation film material includes a first film material and a second film material. Attaching the vacuum insulation panel film material to both sides of the vacuum insulation panel core material includes the following steps:

[0037] Attach the first film material to a predetermined surface of the first mold assembly or the second mold assembly, where the predetermined surface is the surface for forming the cavity;

[0038] Provide a blowing device, attach the vacuum insulation panel core material to the surface of the first film material, and use the blowing device to blow air on the vacuum insulation panel core material to make the vacuum insulation panel core material closely attached to the first film material;

[0039] Attach the second film material to the surface of the vacuum insulation panel core material, and use the blowing device to blow air on the vacuum insulation panel core material to make the second film material closely attached to the vacuum insulation panel core material.

[0040] In some embodiments of the present application, to evaporate the moisture in the vacuum insulation panel core material slurry, heat the mold to evaporate the moisture in the vacuum insulation panel core material slurry.

[0041] In a third aspect, an embodiment of the present application provides a heat preservation device, and the heat preservation device includes a vacuum insulation panel prepared by the preparation method according to any embodiment of the second aspect. Description of the Drawings

[0042] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application and, together with the specification, are used to explain the principles of this application.

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0044] Figure 1 Structural schematic diagram of the mold provided for the embodiment of this application;

[0045] Figure 2 Exploded structural schematic diagram of the mold provided for the embodiment of this application;

[0046] Figure 3 Structural schematic diagram of the first mold assembly with a slurry layer described in step Sb of the embodiment of this application;

[0047] Figure 4 Structural schematic diagram of the first mold assembly with a first film material attached as shown in step Sf of the embodiment of this application;

[0048] Figure 5 Structural schematic diagram of the first mold assembly with a first film material and a vacuum insulation panel core material attached described in step Sh of the embodiment of this application;

[0049] Figure 6 Structural schematic diagram of the first mold assembly with the pre-assembled component attached as shown in step Si of the embodiment of this application. Detailed implementation manners

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some but not all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts belong to the scope of protection of this application.

[0051] Unless otherwise specifically stated, the terms used in this article should be understood as having the meanings commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used in this article have the same meaning as the general understanding of those skilled in the art to which this application belongs. In case of conflict, this specification prevails.

[0052] Unless otherwise specified, various raw materials, reagents, instruments, and equipment used in this application can be obtained through market purchases or prepared by existing methods.

[0053] The splicing connection method of the existing vacuum insulation panel has a technical problem that affects the heat preservation effect.

[0054] The technical solution provided by the embodiments of this application to solve the above technical problems has the following general idea:

[0055] In a first aspect, the embodiments of this application provide a mold for preparing a vacuum insulation panel. The mold includes a first mold component and a second mold component. A cavity is enclosed between the first mold component and the second mold component. The cavity is used to accommodate the core material slurry of the vacuum insulation panel and the film material of the vacuum insulation panel, and the joint between the first mold component and the second mold component is sealed;

[0056] An air-permeable structure for communicating the cavity with the external environment is provided on at least one of the first mold component and the second mold component. The air-permeable structure is air-permeable and the air-permeable structure cannot allow the core material slurry of the vacuum insulation panel to pass through;

[0057] The mold further includes a detachable sealing member for plugging the air-permeable structure;

[0058] An air vent for evacuating the cavity is further provided on at least one of the first mold component and the second mold component.

[0059] It is easy to understand that the slurry of the core material of the vacuum insulation panel usually has a certain viscosity. Therefore, when the size of the air-permeable structure is very small, the slurry of the core material of the vacuum insulation panel cannot pass through the air-permeable structure, but the air-permeable structure can still allow gas to pass through. Regarding the mold composition: the first mold component and the second mold component, these two components jointly enclose a cavity, which is the key space for accommodating the core material slurry and the film material when preparing the vacuum insulation panel; Sealing arrangement, the first mold component and the second mold component adopt a sealing design at the joint to ensure that during the preparation process, the slurry and the film material will not leak, and at the same time maintain the vacuum environment inside the cavity. Regarding the air-permeable structure and the sealing component: the air-permeable structure, at least one mold component is provided with an air-permeable structure, which allows the cavity to communicate with the external environment, but has a special filtering or blocking function to ensure that the slurry of the core material of the vacuum insulation panel cannot pass through. This design may be to achieve certain process steps, such as gas exchange during the drying or curing process of the slurry; Removable sealing component, in order to control the opening and closing of the air-permeable structure, the mold is also equipped with a removable sealing component. When needed, the air-permeable structure can be blocked to maintain the airtightness of the cavity. Regarding the vacuum pumping function: at least one mold component is provided with an air vent for pumping the cavity into a vacuum. This design is the core step in preparing the vacuum insulation panel. By pumping the vacuum, the gas content in the cavity is reduced, thereby improving the heat insulation performance.

[0060] The cavity described in the embodiment of the present application can be used to accommodate the slurry of the core material of the vacuum insulation panel. The air-permeable structure can connect the cavity to the external environment, so that the moisture of the slurry of the core material of the vacuum insulation panel can evaporate. At the same time, the air-permeable structure does not allow the slurry of the core material of the vacuum insulation panel to pass through, so that the slurry of the core material of the vacuum insulation panel will not flow out from the air-permeable structure, thus successfully forming; after the slurry of the core material of the vacuum insulation panel is formed into the core material of the vacuum insulation panel, the core material of the vacuum insulation panel and the film material of the vacuum insulation panel can be assembled and then added to the cavity together to further prepare the vacuum insulation panel; the sealing component can block the air-permeable structure. After the air-permeable structure is blocked, the cavity can be pumped into a vacuum through the air vent, so as to pump the core material of the vacuum insulation panel into a vacuum. Since the cavity can be of any shape, the mold provided in the present application can prepare a vacuum insulation panel with a 3D shape by an integrally formed method, and the prepared vacuum insulation panel has no splicing structure and has strong heat preservation ability.

[0061] In some embodiments of the present application, at least one of the first mold component and the second mold component includes a heating device.

[0062] It is easy to understand that when the heating device works, it can increase the temperature inside the cavity, thereby promoting the evaporation of moisture in the slurry of the core material of the vacuum insulation panel. The heating device can be arranged inside the first mold assembly or the second mold assembly, or can also be arranged outside the first mold assembly or the second mold assembly.

[0063] In some embodiments of the present application, the heating device is at least one of an electric heating wire, an infrared heating device, and a microwave heating device.

[0064] It is easy to understand that electric heating wires, infrared heating devices, and microwave heating devices are all common and easy-to-install heating devices. Other heating devices can also be used in the present application.

[0065] In some embodiments of the present application, the air-permeable structure is at least one of small holes or gaps.

[0066] In some embodiments of the present application, the diameter of the small holes is 3-30 μm, and the width of the gaps is 3-30 μm.

[0067] It is easy to understand that the beneficial effect of the diameter of the small holes being 3-30 μm is that it can completely prevent the slurry of the core material of the vacuum insulation panel from flowing out on the basis of ensuring good enough air permeability. The same beneficial effect is also achieved when the width of the gaps is 3-30 μm.

[0068] As an example, the diameter of the small holes can be 3 μm, 10 μm, 16 μm, 24 μm, 30 μm.

[0069] As an example, the width of the gaps can be 3 μm, 10 μm, 16 μm, 24 μm, 30 μm.

[0070] In some embodiments of the present application, a sealing strip is arranged at the joint of the first mold assembly and the second mold assembly.

[0071] It is easy to understand that the sealing strip can ensure the sealing at the joint of the first mold assembly and the second mold assembly.

[0072] In some embodiments of the present application, the sealing member is a sealing film material that can fit on the surface of the first mold assembly or the second mold assembly.

[0073] It should be noted that the sealing film material can be multiple flat materials, which are respectively attached to each surface of the first mold assembly or the second mold assembly; the sealing film material can also be a material adapted to the shape of the first mold assembly or the second mold assembly, and is integrally attached to the surface of the first mold assembly or the second mold assembly. After the sealing film material is attached to the surface of the first mold assembly or the second mold assembly, the air-permeable structure can be blocked. As an example, the material of the sealing film material can be flexible plastic or rubber.

[0074] In some embodiments of the present application, at least one of the first mold assembly and the second mold assembly is provided with a grouting opening, the grouting opening communicates with the cavity, and the vacuum insulation panel core material slurry is injected into the cavity through the grouting opening.

[0075] It is easy to understand that the vacuum insulation panel core material slurry can be injected into the cavity through the grouting opening. It should be noted that the vacuum insulation panel core material slurry can also be arranged in the cavity by other means, such as coating on the surface of the cavity.

[0076] In some embodiments of the present application, the grouting opening and the ventilation opening are of the same structure.

[0077] In a second aspect, an embodiment of the present application provides a method for manufacturing a vacuum insulation panel, and the manufacturing method includes the following steps:

[0078] S1: Provide the mold according to any one of the first aspect embodiments, provide the vacuum insulation panel core material slurry, and add the vacuum insulation panel core material slurry into the cavity;

[0079] S2: Keep the air-permeable structure in an air-permeable state, and evaporate the moisture of the vacuum insulation panel core material slurry, so that the vacuum insulation panel core material slurry is formed into a vacuum insulation panel core;

[0080] S3: Provide a vacuum insulation panel film material adapted to the shape of the vacuum insulation panel core, attach the vacuum insulation panel film material to both sides of the vacuum insulation panel core, and set a heat-sealing edge material at the edge connection of the vacuum insulation panel film material to form a pre-assembled component;

[0081] S4: Re-add the pre-assembled component into the cavity, and block the air-permeable structure through the sealing member;

[0082] S5: Vacuum the cavity through the ventilation opening, and perform heat-sealing edge treatment on the pre-assembled component by heating the heat-sealing edge material to obtain the vacuum insulation panel.

[0083] To keep the breathable structure in a breathable state, it should be ensured that the breathable structure is not blocked by the sealing member.

[0084] To evaporate the moisture in the slurry of the vacuum insulation panel core material, heating can be carried out. A heating device can be provided in the first mold assembly or the second mold assembly to heat the slurry of the vacuum insulation panel core material. The mold can also be placed in an oven or other heating device for heating.

[0085] In some embodiments of the present application, the slurry of the vacuum insulation panel core material includes organic fibers, water, a fiber dispersant, and a crosslinking agent.

[0086] It is easy to understand that the function of the fiber dispersant is to increase the dispersibility of the organic fibers in water. The function of the crosslinking agent is to crosslink the organic fibers.

[0087] In some embodiments of the present application, the organic fibers are at least one of polyester, acrylic, nylon, polypropylene, aramid, ultra-high molecular weight polyethylene fiber, polypropylene fiber, poly(p-phenylene benzobisoxazole) fiber, polybenzimidazole fiber, poly(p-phenylene pyridinediimidazole) fiber, polyimide fiber, and carbon fiber; and / or,

[0088] The fiber dispersant is at least one of polyethylene oxide, sodium alginate, carboxymethyl cellulose, hydroxyethyl cellulose, sodium lignin sulfonate, polycarboxylic acid, and polyphosphate; and / or,

[0089] The crosslinking agent is at least one of tetraethyl orthosilicate, tetramethyl orthosilicate, trimethoxysilane, N-methylolacrylamide, and glycidyl ether.

[0090] In some embodiments of the present application, based on the mass percentage of the slurry of the vacuum insulation panel core material, the water content is 40% to 90%; and / or,

[0091] In the slurry of the vacuum insulation panel core material, the mass of the fiber dispersant is 0.5% to 5% of the mass of the organic fibers; and / or,

[0092] In the slurry of the vacuum insulation panel core material, the mass of the crosslinking agent is 0.1% to 0.5% of the mass of the organic fibers.

[0093] It is easy to understand that the beneficial effect of the water content accounting for 40% to 90% of the slurry of the vacuum insulation panel core material is to ensure that the slurry of the vacuum insulation panel core material has a relatively high viscosity, so that it will not flow out from the breathable structure; at the same time, it ensures that the organic fibers can be well dispersed in water.

[0094] In some embodiments of the present application, adding the slurry of the vacuum insulation panel core material into the cavity includes the following steps:

[0095] S111: Coat the slurry of the vacuum insulation panel core material onto a predetermined surface of the first mold assembly or the second mold assembly, where the predetermined surface is the surface for forming the cavity.

[0096] S112: Assemble the first mold assembly and the second mold assembly to form a cavity filled with the slurry of the vacuum insulation panel core material.

[0097] It is easy to understand that the beneficial effect of adding the slurry of the vacuum insulation panel core material into the cavity in the above manner is that the coating operation is simple, time-consuming is less, and it is easy to control the thickness of the core material.

[0098] In some embodiments of the present application, at least one of the first mold assembly and the second mold assembly is provided with a grouting opening, and the grouting opening is communicated with the cavity. Adding the slurry of the vacuum insulation panel core material into the cavity includes the following steps:

[0099] S121: Assemble the first mold assembly and the second mold assembly;

[0100] S122: Inject the slurry of the vacuum insulation panel core material into the cavity from the grouting opening.

[0101] It is easy to understand that the beneficial effect of adding the slurry of the vacuum insulation panel core material into the cavity in the above manner is that the slurry of the vacuum insulation panel core material fully fills the entire cavity, and the overall thickness is more uniform and controllable.

[0102] In some embodiments of the present application, the vacuum insulation film material includes a first film material and a second film material. Attaching the vacuum insulation panel film material to both sides of the vacuum insulation panel core material includes the following steps:

[0103] S31: Attach the first film material to a predetermined surface of the first mold assembly or the second mold assembly, where the predetermined surface is the surface for forming the cavity;

[0104] S32: Provide a blowing device, attach the vacuum insulation panel core material to the surface of the first film material, and use the blowing device to blow air on the vacuum insulation panel core material to make the vacuum insulation panel core material closely attached to the first film material;

[0105] S33: Attach the second film material to the surface of the vacuum insulation panel core material, and use the blowing device to blow air on the vacuum insulation panel core material to make the second film material closely attached to the vacuum insulation panel core material.

[0106] It is easy to understand that by blowing air through the air blowing device, the first film material and the second film material can be closely and evenly attached to the vacuum insulation panel core material.

[0107] In some embodiments of the present application, to evaporate the moisture in the slurry of the vacuum insulation panel core material, the mold is heated to evaporate the moisture in the slurry of the vacuum insulation panel core material.

[0108] In a third aspect, an embodiment of the present application provides a heat preservation device, and the heat preservation device includes a vacuum insulation panel prepared by the preparation method according to any one of the embodiments in the second aspect.

[0109] As an example, the heat preservation device can be any one of a refrigerator, a freezer, a refrigerated container, a refrigerated truck, a cold drink vending machine, a medical insulation box, a food insulation box, and a water heater.

[0110] The heat preservation device is realized based on the vacuum insulation panel prepared by the preparation method according to any one of the embodiments in the second aspect. The specific implementation manner of the heat preservation device can refer to the above embodiments and the common general knowledge in the art. Since the heat preservation device adopts some or all of the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here.

[0111] The following further elaborates the present application in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present application and not to limit the scope of the present application. The experimental methods without specific conditions noted in the following embodiments are generally determined according to industry standards. If there is no corresponding industry standard, they are carried out according to general international standards, conventional conditions or conditions recommended by the manufacturer.

[0112] Embodiment

[0113] First, an embodiment of the present application provides a mold. Please refer to Figure 1 、 Figure 2 , the mold includes a first mold component 1 and a second mold component 2. Both the first mold component 1 and the second mold component 2 are cubic and box-shaped with one side open. The size of the first mold component 1 is larger than that of the second mold component 2. The edge 21 of the second mold component extends laterally, so that when the first mold component 1 and the second mold component 2 are assembled, the edge 21 of the second mold component is connected to the edge of the first mold component 1. After the first mold component 1 and the second mold component 2 are assembled, a cavity 3 is enclosed. The cavity 3 is also cubic and box-shaped with one side open. The cavity 3 is used to accommodate the slurry of the vacuum insulation panel core material 011 and the vacuum insulation panel film material. And a sealing strip 11 is arranged at the joint of the first mold component 1 and the second mold component 2, so that the first mold component 1 and the second mold component 2 can be hermetically connected;

[0114] The first mold assembly 1 is provided with a ventilation structure that communicates the cavity 3 with the external environment. The ventilation structure is breathable and does not allow the slurry of the vacuum insulation panel core material 011 to pass through. The ventilation structure is a plurality of small holes 12, and the diameter of the small holes 12 is 15 μm.

[0115] The mold further includes a detachable sealing member for plugging the ventilation structure. The sealing member is a sealing film material that can fit on the surface of the first mold assembly 1, specifically a rubber sleeve 4 that can cover the first mold assembly 1.

[0116] The first mold assembly 1 is further provided with a ventilation opening 13 for evacuating the cavity 3.

[0117] A heating device is provided inside the second mold assembly 2. The heating device is a heating wire 14.

[0118] Then, an embodiment of the present application provides a method for manufacturing a vacuum insulation panel. The manufacturing method includes the following steps:

[0119] Sa: Provide the slurry of the vacuum insulation panel core material 011.

[0120] Sb: Spray the slurry of the vacuum insulation panel core material 011 onto a predetermined surface of the first mold assembly 1 to form a slurry layer 01 as shown in Figure 3 The predetermined surface is the surface for forming the cavity 3.

[0121] Sc: Assemble the first mold assembly 1 and the second mold assembly 2 to form a cavity 3 filled with the slurry layer 01.

[0122] Sd: Keep the ventilation structure in a breathable state, and heat the first mold assembly 1 through the heating wire 14 to evaporate the moisture in the slurry layer 01 so that the slurry layer 01 is formed into a vacuum insulation panel core material 011.

[0123] Se: Provide a vacuum insulation panel film material adapted to the shape of the vacuum insulation panel core material 011. The vacuum insulation panel film material includes a first film 02 for attaching to the outer surface of the vacuum insulation panel core material 011 and a second film 03 for attaching to the inner surface of the vacuum insulation panel core material 011.

[0124] Sf: Disassemble the first mold assembly 1 and the second mold assembly 2 and take out the vacuum insulation panel core material 011. Attach the first film 02 to the predetermined surface of the first mold assembly 1. The predetermined surface is the surface for forming the cavity 3. The structure of the first mold assembly 1 with the first film 02 attached is as shown inFigure 4 as shown;

[0125] Sg: Set a heat-sealing edge material inside the edge of the first film material 02;

[0126] Sh: Provide a blower device to attach the vacuum insulation panel core material 011 to the surface of the first film material 02, and use the blower device to blow air on the vacuum insulation panel core material 011 so that the vacuum insulation panel core material 011 is closely attached to the first film material 02. The structure of the first mold assembly 1 with the first film material 02 and the vacuum insulation panel core material 011 attached is as Figure 5 shown;

[0127] Si: Attach the second film material 03 to the surface of the vacuum insulation panel core material 011, and use the blower device to blow air on the vacuum insulation panel core material 011 so that the second film material 03 is closely attached to the vacuum insulation panel core material 011 to form a pre-assembled component. The structure of the first mold assembly 1 with the pre-assembled component attached is as Figure 6 shown;

[0128] Sj: Assemble the first mold assembly 1 and the second mold assembly 2 so that the pre-assembled component is incorporated into the cavity 3, and then seal the breathable structure through the sealing member;

[0129] Sk: Evacuate the cavity 3 through the ventilation opening 13, and at the same time heat the first mold assembly 1 through the heating wire 14 to heat the heat-sealing edge material to perform heat-sealing edge treatment on the pre-assembled component to obtain the vacuum insulation panel.

[0130] The slurry of the vacuum insulation panel core material 011 includes organic fibers, water, a fiber dispersant, and a cross-linking agent.

[0131] The organic fibers are at least one of polyester, acrylic, nylon, polypropylene, aramid, ultra-high molecular weight polyethylene fiber, polypropylene fiber, poly(p-phenylene benzobisoxazole) fiber, polybenzimidazole fiber, poly(p-phenylene pyridinediimidazole) fiber, polyimide fiber, and carbon fiber,

[0132] The fiber dispersant is at least one of polyethylene oxide, sodium alginate, carboxymethyl cellulose, hydroxyethyl cellulose, sodium lignin sulfonate, polycarboxylic acid, and polyphosphate,

[0133] The cross-linking agent is at least one of tetraethyl orthosilicate, tetramethyl orthosilicate, trimethoxysilane, N-methylolacrylamide, and glycidyl ether.

[0134] Based on the mass percentage of the slurry of the vacuum insulation panel core material 011, the content of the water is 40% - 90%,

[0135] In the slurry of the core material 011 of the vacuum insulation panel, the mass of the fiber dispersant is 0.5% to 5% of the mass of the organic fiber.

[0136] In the slurry of the core material 011 of the vacuum insulation panel, the mass of the cross-linking agent is 0.1% to 0.5% of the mass of the organic fiber.

[0137] Various embodiments of the present application may exist in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity and should not be construed as a rigid limitation on the scope of the present application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single values within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, and this applies regardless of the range. Additionally, whenever a numerical range is indicated herein, it means including any cited number (fraction or integer) within the indicated range.

[0138] In this application, unless otherwise specified, the orientation terms such as "upper" and "lower" specifically refer to the drawing directions in the attached drawings. Additionally, in the description of the specification of this application, the terms "include", "comprise", etc. mean "include but not limited to". Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element. In this text, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In this text, "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone. For the association relationship of more than three associated objects described by "and / or", it means that these three associated objects can exist alone for any one of them, or at least any two of them exist simultaneously. For example, for A, and / or B, and / or C, it can mean that any one of A, B, and C exists alone, or any two of them exist simultaneously, or all three of them exist simultaneously. In this text, "at least one" means one or more, and "a plurality" means two or more. "At least one kind", "at least one item (piece) below" or similar expressions refer to any combination of these items, including any combination of single item (piece) or plural items (pieces). For example, "at least one item (piece) among a, b, or c", or, "at least one item (piece) among a, b, and c" can both mean: a, b, c, a - b (i.e., a and b), a - c, b - c, or a - b - c, where a, b, and c can be single or multiple respectively. The "parts representation method" involved in this application, such as weight parts, mass parts, etc., represents the proportional relationship between each component. In the proportional relationships involved in this application, the parameters that need to be described by proportion should be understood as the antecedents of the proportion formula in the order of description, and the proportional numbers should be understood as the consequents of the proportion formula. For example, if the mass ratio of substance A, substance B, and substance C is 1:2:3, then substance A, substance B, and substance C should correspond one by one with the proportional numbers in the proportion formula in the order of description, that is, the mass of substance A: the mass of substance B: the mass of substance C = 1:2:3.

[0139] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A mold, characterized in that, The mold is used for the preparation of a vacuum insulation panel. The mold includes a first mold component and a second mold component. A cavity is enclosed between the first mold component and the second mold component. The cavity is used to accommodate the core material slurry of the vacuum insulation panel and the film material of the vacuum insulation panel. And the joint between the first mold component and the second mold component is sealed. At least one of the first mold component and the second mold component is provided with a breathable structure that communicates the cavity with the external environment. The breathable structure is breathable, and the breathable structure cannot allow the core material slurry of the vacuum insulation panel to pass through. The mold further includes a detachable sealing member, and the sealing member is used to block the breathable structure. At least one of the first mold component and the second mold component is further provided with a vent opening for evacuating the cavity.

2. The mold according to claim 1, wherein At least one of the first mold component and the second mold component includes a heating device.

3. The mold according to claim 2, characterized in that, The heating device is at least one of an electric heating wire, an infrared heating device, and a microwave heating device.

4. The mold according to claim 1, characterized in that, The breathable structure is at least one of small holes or slits.

5. The mold according to claim 4, characterized in that, The diameter of the small holes is 3 - 30 μm, and the width of the slits is 3 - 30 μm.

6. The mold according to claim 1, characterized in that, A sealing strip is provided at the joint between the first mold component and the second mold component.

7. The mold according to claim 1, characterized in that, The sealing member is a sealing film material that can fit on the surface of the first mold component or the second mold component.

8. The mold according to claim 1, characterized in that At least one of the first mold component and the second mold component is provided with a slurry injection opening, and the slurry injection opening communicates with the cavity. The core material slurry of the vacuum insulation panel is injected into the cavity through the slurry injection opening.

9. The mold according to claim 8, characterized in that, The slurry injection opening and the vent opening are of the same structure.

10. A method for preparing a vacuum insulation panel, characterized in that, The preparation method includes the following steps: Provide the mold according to any one of claims 1 - 9, provide the core material slurry of the vacuum insulation panel, and add the core material slurry of the vacuum insulation panel into the cavity. Keep the breathable structure in a breathable state and evaporate the moisture of the core material slurry of the vacuum insulation panel so that the core material slurry of the vacuum insulation panel is formed into a core material of the vacuum insulation panel. Provide a film material of the vacuum insulation panel that fits the shape of the core material of the vacuum insulation panel, attach the film material of the vacuum insulation panel to both sides of the core material of the vacuum insulation panel, and set a heat-sealing edge material at the joint of the edges of the film material of the vacuum insulation panel to form a pre-assembled component. Re-add the pre-assembled component into the cavity and block the breathable structure through the sealing member. Evacuate the cavity through the vent opening and perform heat-sealing edge treatment on the pre-assembled component by heating the heat-sealing edge material to obtain the vacuum insulation panel.

11. The preparation method of the vacuum insulation panel according to claim 10, characterized in that, The core material slurry of the vacuum insulation panel includes organic fibers, water, a fiber dispersant, and a cross-linking agent.

12. The method for preparing a vacuum insulation panel according to claim 11, characterized in that, The organic fiber is at least one of polyester, acrylic, nylon, polypropylene, aramid, ultra-high molecular weight polyethylene fiber, polypropylene fiber, poly(p-phenylene benzobisoxazole) fiber, polybenzimidazole fiber, poly(p-phenylene pyridinediimidazole) fiber, polyimide fiber, and carbon fiber; and / or, The fiber dispersant is at least one of polyethylene oxide, sodium alginate, carboxymethyl cellulose, hydroxyethyl cellulose, sodium lignosulfonate, polycarboxylic acid, and polyphosphate; and / or, The crosslinking agent is at least one of tetraethyl orthosilicate, tetramethyl orthosilicate, trimethoxysilane, N-methylolacrylamide, and glycidyl ether.

13. The preparation method of the vacuum insulation panel according to claim 11, characterized in that, Based on the mass percentage of the vacuum insulation panel core material slurry, the water content is 40% to 90%; and / or, In the vacuum insulation panel core material slurry, the mass of the fiber dispersant is 0.5% to 5% of the mass of the organic fiber; and / or, In the vacuum insulation panel core material slurry, the mass of the crosslinking agent is 0.1% to 0.5% of the mass of the organic fiber.

14. The method for preparing a vacuum insulation panel according to claim 10, wherein, Adding the vacuum insulation panel core material slurry into the cavity includes the following steps: Coating the vacuum insulation panel core material slurry onto a predetermined surface of the first mold assembly or the second mold assembly, where the predetermined surface is the surface for forming the cavity; Assembling the first mold assembly and the second mold assembly to form a cavity filled with the vacuum insulation panel core material slurry.

15. The method for preparing a vacuum insulation panel according to claim 10, characterized in that, At least one of the first mold assembly and the second mold assembly is provided with a grouting opening, and the grouting opening communicates with the cavity. Adding the vacuum insulation panel core material slurry into the cavity includes the following steps: Assembling the first mold assembly and the second mold assembly; Injecting the vacuum insulation panel core material slurry into the cavity from the grouting opening.

16. The method for preparing a vacuum insulation panel according to claim 10, characterized in that, The vacuum insulation film material includes a first film material and a second film material. Attaching the vacuum insulation panel film material to both sides of the vacuum insulation panel core material includes the following steps: Attaching the first film material to a predetermined surface of the first mold assembly or the second mold assembly, where the predetermined surface is the surface for forming the cavity; Providing a blowing device, attaching the vacuum insulation panel core material to the surface of the first film material, and using the blowing device to blow air on the vacuum insulation panel core material to make the vacuum insulation panel core material closely attached to the first film material; Attaching the second film material to the surface of the vacuum insulation panel core material, and using the blowing device to blow air on the vacuum insulation panel core material to make the second film material closely attached to the vacuum insulation panel core material.

17. The method for preparing a vacuum insulation panel according to claim 10, characterized in that, Evaporating the moisture of the vacuum insulation panel core material slurry by heating the mold to evaporate the moisture of the vacuum insulation panel core material slurry.

18. A heat preservation device, characterized in that, The heat preservation device includes a vacuum insulation panel prepared by the preparation method according to any one of claims 10 to 17.

Images