Core material structure for vacuum insulation panel and vacuum insulation panel

Abstract

The present application relates to the technical field of vacuum insulation panels, and discloses a core material structure for vacuum insulation panels and a vacuum insulation panel. Among them, the core material structure for vacuum insulation panels includes: a porous composite layer, including a porous structure; a glass fiber layer, which is arranged on both sides of the porous composite layer. The core material structure provided by the present disclosure is provided with a porous composite layer between the glass fiber layers to form a composite core material mixed with a porous structure. The porous composite layer includes a porous structure, and the porous structure has lower requirements for vacuum degree than glass fiber. In the case of puncture and slow leakage of the core material structure, the volume of the core material structure and the change amplitude of the thermal conductive system are both low, thereby reducing the influence of the change in vacuum degree on the thermal conductivity of the core material structure.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum insulation panels, for example, to a core material structure for vacuum insulation panels and a vacuum insulation panel. Background Art

[0002] In the related art, there are two main core materials for vacuum insulation panels, one is glass fiber and the other is fumed silica.

[0003] In the disclosed implementation process, the application of the above two core materials has the following problems:

[0004] The initial thermal conductivity of vacuum insulation panels using glass fiber as the core material is relatively low, and the change in internal vacuum has a greater impact on the thermal conductivity. A very small increase in vacuum will cause the thermal conductivity of the vacuum insulation panel to deteriorate rapidly. In this way, the glass fiber core material is permeable to external gases, resulting in a decrease in vacuum and a significant decrease in thermal conductivity.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide a core material structure for a vacuum insulation panel and a vacuum insulation panel, which improve the stability of the thermal conductivity of the vacuum insulation panel.

[0008] In some embodiments, a core material structure for a vacuum insulation panel includes: a porous composite layer including a porous structure; and a glass fiber layer disposed on both sides of the porous composite layer.

[0009] Optionally, the porous composite layer further includes: a glass fiber frame including a containing space, and the porous structure is arranged in the containing space.

[0010] Optionally, the porous structure includes: porous material particles; and a packaging member for packaging the porous material particles and disposed in the accommodating space.

[0011] Optionally, glass fiber is filled between the packaging component and the glass fiber frame.

[0012] Optionally, the pore size of the porous structure is less than or equal to 50 nm; and / or the particle size of the porous material particles in the porous structure is less than or equal to 5 μm; and / or the pore volume in the porous structure is in the range of 0.4 cm 3 / g to 1cm 3 / g.

[0013] Optionally, the material of the porous structure includes one or a combination of the following: silicon dioxide, PBAT and modified PP.

[0014] Optionally, the number of the glass fiber layers located on either side of the porous composite layer is one or more.

[0015] Optionally, the core material structure further includes: a getter, which is arranged in the glass fiber layer and / or the porous composite layer and is used to absorb gas; and a desiccant, which is arranged in the glass fiber layer and / or the porous composite layer and is used to absorb moisture.

[0016] In some embodiments, a vacuum insulation panel is provided, comprising: an aluminum bag; and a core material structure as described in any of the above embodiments, wherein the core material structure is encapsulated in the aluminum bag.

[0017] Optionally, the aluminum bag includes: an aluminum-plated central region; and a multi-layer film material structure plated with an inorganic oxide, which is arranged on the outer peripheral side of the aluminum-plated central region.

[0018] The core material structure for the vacuum insulation panel and the vacuum insulation panel provided in the embodiments of the present disclosure can achieve the following technical effects:

[0019] The core material structure for vacuum insulation panels provided by the present disclosure includes a porous composite layer and a glass fiber layer. The porous composite layer includes a porous structure. The glass fiber layers are arranged on both sides of the porous composite layer.

[0020] The core material structure provided by the present disclosure has a porous composite layer disposed between the glass fiber layers to form a composite core material mixed with a porous structure. The porous composite layer includes a porous structure, and the porous structure has a lower requirement for vacuum degree than the glass fiber. In the case of puncture and slow air leakage in the core material structure, the volume of the core material structure and the change amplitude of the heat conduction system are both low, thereby reducing the influence of the change of vacuum degree on the thermal conductivity of the core material structure.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of a core material structure for a vacuum insulation panel provided in an embodiment of the present disclosure;

[0024] Figure 2 is a schematic structural diagram of a porous composite layer of a core material structure provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic structural diagram of a vacuum insulation panel provided in an embodiment of the present disclosure;

[0026] Figure 4 It is a schematic diagram of the structure of an aluminum bag of a vacuum insulation panel provided by an embodiment of the present disclosure;

[0027] Figure 5 This is a comparison chart of experimental data of the relationship between air pressure and thermal conductivity corresponding to different cell sizes provided by an embodiment of the present disclosure;

[0028] Figure 6 It is a comparison chart of test data of an aging test and a heat resistance test provided in one embodiment of the present disclosure.

[0029] Reference numerals:

[0030] 1 vacuum insulation panel;

[0031] 100 aluminum bag; 110 aluminum-plated center area; 120 multi-layer film structure;

[0032] 200 core material structure;

[0033] 210 porous composite layer; 212 glass fiber frame; 214 porous structure; 216 porous material particles; 218 packaging;

[0034] 220 glass fiber layer;

[0035] 230 getter; 240 desiccant. DETAILED DESCRIPTION

[0036] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0037] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0039] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0040] Unless otherwise stated, the term "plurality" means two or more.

[0041] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0042] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0044] In some embodiments, in combination Figure 1 and Figure 2As shown, a core material structure 200 for a vacuum insulation panel 1 is provided, comprising a porous composite layer 210 and a glass fiber layer 220. The porous composite layer 210 comprises a porous structure 214. The glass fiber layer 220 is disposed on both sides of the porous composite layer 210.

[0045] The core material structure 200 provided in the present disclosure is provided with a porous composite layer 210 between the glass fiber layers 220 to form a composite core material mixed with a porous structure 214. The porous composite layer 210 includes a porous structure 214, which can effectively limit the movement of gas molecules due to its tiny pores, thereby reducing the occurrence of gas heat conduction and heat convection, and improving the thermal insulation performance of the vacuum insulation panel 1. In addition, the porous structure 214 can increase the radiation barrier, reduce the influence of thermal radiation, and thus reduce the thermal conductivity of the vacuum insulation panel 1. The requirements of the porous structure 214 for the vacuum degree are lower than those of the glass fiber. The porous structure 214 can reduce gas infiltration and extend the rate of increase of the thermal conductivity of the vacuum insulation panel 1 caused by gas convection, thereby extending the service life of the vacuum insulation panel 1. Furthermore, the glass fiber layer 220 can enhance the mechanical stability and structural strength of the vacuum insulation panel 1, and the porous composite layer 210 can improve the compressive strength and durability of the material while maintaining low thermal conductivity. Furthermore, the composite structure of the glass fiber layer 220 and the porous composite layer 210 can adjust the pore structure at the microscopic level, reduce the average pore size and porosity, and thus improve the thermal insulation performance of the material at the macroscopic level.

[0046] By using the core material structure 200 provided by the present disclosure, when the core material structure 200 is punctured or leaks slowly, the volume of the core material structure 200 and the change range of the thermal conductive system are relatively low, thereby reducing the effect of the change in vacuum degree on the thermal conductivity coefficient of the core material structure 200.

[0047] Optionally, combined Figure 2 As shown, the porous composite layer 210 further includes a glass fiber frame 212. The glass fiber frame 212 includes a receiving space, and the porous structure 214 is disposed in the receiving space.

[0048] In this embodiment, the porous composite layer 210 includes a glass fiber frame 212 and a porous structure 214. The glass fiber frame 212 is configured with an accommodation space, and the porous structure 214 is arranged in the accommodation space to fix the porous structure 214. The glass fiber frame 212 has high strength and heat resistance, and as the outer frame of the vacuum insulation panel 1, it can improve the structural stability of the porous composite layer 210. By arranging the porous structure 214 in the glass fiber frame 212, the movement of gas molecules is restricted by the tiny pores of the porous structure 214, thereby reducing gas heat conduction and convection heat transfer, reducing heat conduction, and improving the insulation effect of the vacuum insulation panel 1.

[0049] Furthermore, the combination of the glass fiber frame 212 and the porous structure 214 can improve the compressive strength of the vacuum insulation panel 1, so that it can better withstand external pressure and reduce the risk of damage during use and transportation. In the structural design of the vacuum insulation panel 1, the glass fiber frame 212 can help reduce the temperature difference between the edge and the center, thereby reducing the thermal bridge effect and improving the overall insulation uniformity. Adding the porous structure 214 helps to maintain the vacuum degree inside the vacuum insulation panel 1, slow down the increase in thermal conductivity caused by gas penetration, and thus extend the service life of the vacuum insulation panel 1.

[0050] Optionally, the shape of the glass fiber frame 212 is the same as that of the glass fiber layer 220 , thereby ensuring that the overall structure of the glass fiber layer 220 and the porous composite layer 210 after being stacked is uniform and neat.

[0051] Optionally, combined Figure 2 As shown, the porous structure 214 includes: porous material particles 216 and a packaging member 218. The packaging member 218 is used to package the porous material particles 216 and is disposed in the accommodating space.

[0052] In this embodiment, the porous structure 214 includes a package 218 for packaging porous material particles 216 and porous material particles 216. The porous material particles 216 are packaged by the package 218 to set the porous material particles 216 in the core structure 200. The porous material particles 216 can effectively limit the movement of gas molecules due to their tiny pores, thereby reducing the occurrence of gas heat conduction and heat convection, and improving the insulation performance of the vacuum insulation panel 1. In addition, the porous material particles 216 can increase the radiation barrier and reduce the impact of thermal radiation, thereby reducing the thermal conductivity of the vacuum insulation panel 1. The requirements of the porous material particles 216 for the vacuum degree are lower than those of glass fibers. The porous structure 214 can reduce gas infiltration and extend the rate of increase of the thermal conductivity of the vacuum insulation panel 1 caused by gas convection, thereby extending the service life of the vacuum insulation panel 1. By adding nanoporous porous materials to the core structure 200, low thermal conductivity and anti-aging effects can be achieved.

[0053] Optionally, the packaging member 218 includes a non-woven fabric. The porous material particles 216 are packaged with the non-woven fabric, and after the packaging is completed, they are pressed into a shape that matches the shape of the accommodation space under high pressure. After the pressing is completed, they are arranged in the accommodation space of the glass fiber frame 212. By arranging the porous material particles 216 in the glass fiber frame 212, the porous material has a small influence on the vacuum degree, thereby improving the stability of the heat conduction system of the core material structure 200 and reducing the volume change range.

[0054] Optionally, glass fiber is filled between the packaging member 218 and the glass fiber frame 212 .

[0055] In this embodiment, by filling glass fiber between the encapsulation 218 and the glass fiber frame 212, the heat transfer through the edge of the glass fiber frame 212 is reduced, thereby reducing the thermal bridge effect and improving the insulation uniformity. In addition, glass fiber has a low thermal conductivity. Filling glass fiber between the encapsulation 218 encapsulated with porous materials and the glass fiber frame 212 can further reduce the heat conduction path through the solid and improve the insulation effect. In addition, filling glass fiber between the encapsulation 218 and the glass fiber frame 212 enhances the compressive strength and structural strength of the vacuum insulation panel 1, thereby improving the durability of the vacuum insulation panel 1.

[0056] Optionally, the pore size of the porous structure 214 is in the range of less than or equal to 50 nm and greater than or equal to 10 nm. And / or the particle size of the porous material particles 216 in the porous structure 214 is in the range of less than or equal to 35 μm and greater than or equal to 5 μm. And / or the pore volume in the porous structure 214 is in the range of 0.4 cm3 / g to 1 cm3 / g.

[0057] In some embodiments, by setting the pore size of the porous structure 214 to a value range of less than or equal to 50 nm and greater than or equal to 10 nm, the heat conduction of the solid material is mainly carried out through lattice vibration (phonon), and the nanopore structure can scatter and limit the propagation of phonons, thereby reducing thermal conductivity. In addition, the nanopore structure can limit the movement of gas molecules, thereby reducing gas heat conduction and convection, further improving the insulation effect. And by limiting the pore size to within 10 nm to 50 nm, the scattering of infrared radiation is enhanced and the radiant heat transfer is reduced.

[0058] Optionally, specific values ​​of the pore size of the porous structure 214 include but are not limited to 45 nm, 40 nm, 35 nm, 30 nm, 25 nm, 20 nm, 15 nm or 10 nm.

[0059] In some embodiments, the value range of the particle size of the porous material particles 216 in the porous structure 214 is set to be less than or equal to 35 μm and greater than or equal to 5 μm, so as to increase the inner surface area of ​​the porous structure 214, thereby improving the scattering of gas molecules and more effectively reducing gas heat conduction. In addition, small-size particles filled in the core material can be more densely stacked, reducing pores and the rapid transfer path of heat through the material, thereby reducing the internal gas content and the thermal bridge effect inside the material, which helps to maintain the vacuum degree inside the vacuum insulation panel 1, improve the insulation performance, and improve the overall density and compressive strength of the vacuum insulation panel 1.

[0060] Optionally, specific values ​​of the particle size of the porous material particles 216 in the porous structure 214 include and are limited to: 5 μm, 10 μm, 20 μm, 30 μm or 35 μm.

[0061] In some embodiments, the pore volume of the porous structure 214 ranges from 0.4 cm3 / g to 1 cm3 / g. By properly setting the pore volume, the porosity is optimized, thereby optimizing the thermal insulation performance.

[0062] Optionally, specific values ​​of the pore volume in the porous structure 214 include but are not limited to: 0.4 cm 3 / g, 0.6 cm 3 / g, 0.8 cm 3 / g or 1 cm 3 / g.

[0063] Optionally, the material of the porous structure 214 includes one or a combination of the following: silicon dioxide, PBAT and modified PP. A suitable porous material is selected according to the manufacturing requirements of the core structure 200 to optimize the thermal insulation performance.

[0064] In some embodiments, the material of the porous structure 214 includes silicon dioxide. Silicon dioxide has extremely low thermal conductivity, which can reduce the thermal conductivity of the vacuum insulation panel 1, thereby improving the thermal insulation performance. In addition, it helps to maintain the vacuum state inside the vacuum insulation panel 1, slow down the increase in thermal conductivity caused by gas penetration, and extend the service life of the vacuum insulation panel 1. In addition, it helps to reduce the thermal bridge effect inside the vacuum insulation panel 1 and improve the insulation uniformity.

[0065] In some embodiments, the material of the porous structure 214 includes PBAT (polybutylene adipate / terephthalate). PBAT has good thermal stability and can maintain performance at higher temperatures, which helps to improve the insulation effect of the vacuum insulation panel 1 at different temperatures. In addition, by adding PBAT, the insulation performance of the vacuum insulation panel 1 can be optimized by changing the pore structure and porosity of the core material.

[0066] In some embodiments, the material of the porous structure 214 includes modified PP (modified polypropylene). Modified PP can be selected according to the use requirements and usage scenarios of the vacuum insulation panel 1 to improve the performance of the vacuum insulation panel 1 accordingly. For example, the use of heat-resistant modified PP can remain stable at higher temperatures, which helps to improve the insulation performance of the vacuum insulation panel 1 in a high temperature environment. Modifying PP by adding flame retardants can improve the flame retardant level of the vacuum insulation panel 1 and meet the requirements for material safety in fields such as construction and electrical appliances.

[0067] Optionally, the number of the glass fiber layer 220 located on either side of the porous composite layer 210 is one.

[0068] In this embodiment, a glass fiber layer 220 is disposed on two opposite sides of the porous composite layer 210 .

[0069] Optionally, combined Figure 1 As shown, the number of glass fiber layers 220 located on either side of the porous composite layer 210 is multiple layers.

[0070] In this embodiment, a plurality of glass fiber layers 220 are respectively disposed on opposite sides of the porous composite layer 210 .

[0071] Specifically, the number of glass fiber layers 220 can be set according to the use requirements and usage scenarios of the core material structure 200 to achieve a thermal insulation effect, optimize resource allocation, and reduce resource waste.

[0072] Optionally, combined Figure 3 As shown, the core material structure 200 further includes a getter 230. The getter 230 is disposed on the glass fiber layer 220 and / or the porous composite layer 210 to absorb gas.

[0073] In this embodiment, a getter 230 is disposed in the core structure 200 to absorb the incoming gas and maintain the vacuum degree of the core structure 200 .

[0074] Optionally, combined Figure 3 As shown, the core material structure 200 further includes a desiccant 240. The desiccant 240 is disposed on the glass fiber layer 220 and / or the porous composite layer 210 to absorb moisture.

[0075] In this embodiment, a desiccant 240 is disposed in the core structure 200 to absorb moisture entering the core structure 200 , thereby improving the dryness inside the core structure 200 and maintaining the vacuum inside the core structure 200 .

[0076] In some embodiments, in combination Figure 3 As shown, a vacuum insulation panel 1 is provided, comprising: an aluminum bag 100 and a core material structure 200 as described in any of the above embodiments, wherein the core material structure 200 is encapsulated in the aluminum bag 100 .

[0077] The vacuum insulation panel 1 provided by the present disclosure includes an aluminum bag 100 and a core material structure 200 of any of the above-mentioned embodiments. The core material structure 200 is encapsulated by the aluminum bag 100. The core material structure 200 of any of the above-mentioned embodiments is provided with a porous composite layer 210 between the glass fiber layers 220 to form a composite core material mixed with a porous structure 214. The porous composite layer 210 includes a porous structure 214. The porous structure 214 can effectively limit the movement of gas molecules due to its tiny pores, thereby reducing the occurrence of gas heat conduction and heat convection, and improving the thermal insulation performance of the vacuum insulation panel 1. In addition, the porous structure 214 can increase the radiation barrier and reduce the influence of thermal radiation, thereby reducing the thermal conductivity of the vacuum insulation panel 1. The requirements of the porous structure 214 for the vacuum degree are lower than those of the glass fiber. The porous structure 214 can reduce gas infiltration and extend the rate of increase of the thermal conductivity of the vacuum insulation panel 1 caused by gas convection, thereby extending the service life of the vacuum insulation panel 1. Furthermore, the glass fiber layer 220 can enhance the mechanical stability and structural strength of the vacuum insulation panel 1, while the porous composite layer 210 can improve the compressive strength and durability of the material while maintaining low thermal conductivity. In addition, the composite structure of the glass fiber layer 220 and the porous composite layer 210 can adjust the pore structure at the micro level, reduce the average pore size and porosity, and thus improve the thermal insulation performance of the material at the macro level.

[0078] Furthermore, by packaging the core structure 200 with an aluminum bag 100 , external gas and moisture are blocked from entering the core structure 200 , thereby maintaining a certain vacuum degree inside the core structure 200 , thereby improving the insulation effect of the vacuum insulation panel 1 .

[0079] Optionally, combined Figure 4 As shown, the aluminum bag 100 includes: an aluminum-plated central region 110 ; and a multi-layer film material structure 120 coated with inorganic oxides, which is disposed on the outer peripheral side of the aluminum-plated central region 110 .

[0080] In this embodiment, the middle area of ​​the aluminum bag 100 is aluminum-plated, and a multilayer film material structure 120 plated with inorganic oxide is disposed on the periphery of the aluminum-plated central area 110 to enhance the barrier and thermal insulation properties of the aluminum bag 100 .

[0081] Optionally, the aluminized central region 110 comprises aluminized PET (polyethylene terephthalate).

[0082] In this embodiment, the aluminized PET has gas and moisture barrier properties, and can effectively block the passage of gas and moisture, thereby maintaining the vacuum state inside the vacuum insulation panel 1 and achieving a good insulation effect. In addition, the aluminized PET has good heat resistance and puncture resistance, which improves the strength of the vacuum insulation panel 1.

[0083] Optionally, the aluminized central region 110 comprises aluminized EVOH (ethylene vinyl alcohol copolymer).

[0084] In this embodiment, the aluminized EVOH can effectively block the penetration of gas and water vapor, thereby maintaining the vacuum degree inside the vacuum insulation panel 1 and improving the insulation performance. The aluminized EVOH has high mechanical strength and improves puncture resistance. The aluminized EVOH multilayer film structure 120 can reduce the thermal bridge effect, thereby improving the overall insulation effect.

[0085] Optionally, the plated inorganic oxide includes silicon oxide, aluminum oxide, etc., which can effectively block the penetration of water vapor and oxygen, maintain the vacuum state inside the vacuum insulation panel 1, and thus improve the insulation effect.

[0086] Combination Figure 5 As shown, a comparison chart of experimental data of the relationship between air pressure and thermal conductivity corresponding to different pore sizes is shown. The pore size corresponds to the pore diameter or pore size in the porous structure 214, and the pore size refers to the pore size of non-circular pores. The experiment gives the relationship between air pressure and thermal conductivity corresponding to various pore sizes. It can be seen from the data that the smaller the pore size, the lower the sensitivity to air pressure changes, that is, the smaller the impact on the vacuum degree in the vacuum insulation panel 1, which can improve the insulation effect of the vacuum insulation panel 1.

[0087] Combination Figure 6 As shown, comparative data of the thermal conductivity of the vacuum insulation panel 1 corresponding to the aging test and the heat resistance test performed on the vacuum insulation panel 1 provided by the embodiment of the present disclosure, and comparative data of the thermal conductivity of the vacuum insulation panel 1 corresponding to the aging test and the heat resistance test performed on the vacuum insulation panel 1 using the glass fiber core material in the related art are given.

[0088] Combination Figure 6 It can be seen that the test data of the experimental group-1 using the vacuum insulation panel 1 of the present invention for the aging test and the test data of the control group-1 using the vacuum insulation panel 1 of the related art for the aging test show that the decrease in the thermal conductivity of the vacuum insulation panel 1 of the present invention after aging is smaller than the decrease in the thermal conductivity of the vacuum insulation panel 1 of the related art after aging. That is, the vacuum insulation panel 1 of the present solution has less influence on the thermal conductivity of the vacuum insulation panel 1 after aging, and has a better insulation effect.

[0089] Combination Figure 6It can be seen that the test data of the experimental group-2 using the vacuum insulation panel 1 of the present invention for heat resistance test and the test data of the control group-2 using the vacuum insulation panel 1 in the related art for heat resistance test show that the decrease in the thermal conductivity of the vacuum insulation panel 1 of the present invention after the heat resistance test is smaller than the decrease in the thermal conductivity of the vacuum insulation panel 1 of the related art after the heat resistance test. That is, the vacuum insulation panel 1 of the present solution has less influence on the thermal conductivity of the vacuum insulation panel 1 after the heat resistance test, and has a better insulation effect.

[0090] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A core material structure for a vacuum insulation panel, characterized in that: include: A porous composite layer including a porous structure; The glass fiber layer is arranged on both sides of the porous composite layer; The porous composite layer further comprises: a glass fiber frame including a containing space, and the porous structure is arranged in the containing space; The porous structure comprises: porous material particles; a packaging member used for packaging the porous material particles and arranged in the accommodating space.

2. The core material structure according to claim 1, characterized in that: Glass fibers are filled between the packaging member and the glass fiber frame.

3. The core material structure according to claim 1 or 2, characterized in that: The pore size of the porous structure ranges from less than or equal to 50 nm to greater than or equal to 10 nm; and / or The particle size of the porous material particles in the porous structure is in the range of less than or equal to 35 μm and greater than or equal to 5 μm; and / or The pore volume in the porous structure ranges from 0.4 cm 3 / g to 1cm 3 / g.

4. The core material structure according to claim 1 or 2, characterized in that: The material of the porous structure includes one of the following: silicon dioxide, PBAT or modified PP.

5. The core material structure according to claim 1 or 2, characterized in that: The number of the glass fiber layers located on either side of the porous composite layer is one or more.

6. The core material structure according to claim 1 or 2, characterized in that: Also includes: A getter, disposed in the glass fiber layer and / or the porous composite layer, for absorbing gas; The desiccant is arranged in the glass fiber layer and / or the porous composite layer and is used for absorbing moisture.

7. A vacuum insulation panel, characterized in that: include: Aluminum bags; The core material structure according to any one of claims 1 to 6, wherein the core material structure is encapsulated in an aluminum bag.

8. The vacuum insulation panel according to claim 7, characterized in that: Aluminum bag includes: Aluminum-plated central area; The multi-layer film structure coated with inorganic oxide is arranged on the outer peripheral side of the central area coated with aluminum.

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