CN218762159U - Vacuum heat insulation plate - Google Patents
Vacuum heat insulation plate Download PDFInfo
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- CN218762159U CN218762159U CN202122547461.9U CN202122547461U CN218762159U CN 218762159 U CN218762159 U CN 218762159U CN 202122547461 U CN202122547461 U CN 202122547461U CN 218762159 U CN218762159 U CN 218762159U
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Abstract
The utility model discloses a vacuum insulation panel, including core, barrier film and getter, the barrier film cladding is at the surface of core, the surface coating one deck of barrier film is with alpha looks Al 3 O 2 The heat insulation coating formed by the nanometer powder and the hybrid graphene aerogel mixed material improves the heat insulation performance of the refrigerator and reduces the energy consumption of the refrigerator by adding the modified graphene heat insulation coating on the surface of the barrier film.
Description
Technical Field
The utility model relates to a thermal-insulated heat preservation technical field, specifically speaking relates to a vacuum insulation panels.
Background
The low-carbon and zero-carbon energy transformation is a necessary choice for sustainable development, coping with global climate change and promoting the green recovery of global economy in post epidemic situation era. China decides that the carbon peak reaching is finished in China before 2030 years and the carbon neutralization is realized before 2060 years. In the field of energy conservation, the important means for realizing carbon neutralization is to make energy conservation and emission reduction. The heat conductivity coefficient of the vacuum insulation panel (VIP for short) heat insulation material can be as low as 0.002W/m.k, and the heat insulation performance is far superior to that of the traditional heat insulation material; the same heat preservation performance is achieved, the thickness of the VIP is only one fifth of that of common heat preservation materials, a large amount of cost can be saved, and the VIP heat preservation material is widely applied to the fields of refrigerators, building materials, medical heat preservation boxes and the like.
The traditional VIP structure consists of a core material, a barrier film and a getter. The core material has the functions of supporting the VIP structure and weakening gas convection; the barrier film is a barrier for preventing the VIP from exchanging gas and water with the outside, so that the vacuum degree in the VIP can be ensured, and the stability of the VIP performance can be maintained; the getter mainly plays a role in absorbing gas released by the core material and the barrier film and gas permeating into the VIP through the barrier film, so that the aim of maintaining high vacuum for a long time is fulfilled, and the effect of prolonging the service life of the VIP is realized by cooperating with the high barrier property of the barrier film. The VIP is used as a heterogeneous heat insulation material, the heat conductivity coefficient of the membrane material is far higher than that of the VIP, a heat bridge is formed along the surface of the membrane material in the heat conduction process, the phenomenon that heat is conducted along the surface of the VIP is called a heat bridge effect, the heat bridge effect can cause the heat conductivity coefficient of the VIP to be increased, and the heat preservation effect is poor.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model provides a vacuum insulation panels is through increasing modified graphite alkene thermal barrier coating to the barrier film surface to improve the thermal-insulated thermal insulation performance of refrigerator, reduce the refrigerator energy consumption.
In order to achieve the above object, the utility model provides a following technical scheme:
the vacuum insulation panel comprises a core material, a barrier film and a getter, wherein the barrier film is coated on the outer surface of the core material, and a layer of alpha-phase Al is coated on the outer surface of the barrier film 3 O 2 And the heat insulation coating is formed by the mixed material of the nano powder and the hybrid graphene aerogel.
Preferably, the thickness of the thermal barrier coating is 0.3-1.5mm.
Preferably, the barrier film structure is a sunny side and a shady side, and a PE film, an Al film, a PET film and a PA film are sequentially arranged on one side from inside to outside; the other side is sequentially provided with a PE film, an EVOH film, an aluminized PET film, a PET film and a PA film.
Preferably, alpha phase Al 3 O 2 The particle size of the nanometer powder is 5-50nm.
Preferably, the core material is glass fiber chopped strands in a weaving layer shape.
Preferably, the getter is one or both of a metal oxide and a metal alloy.
The utility model has the advantages as follows:
1. the heat conductivity coefficient of the vacuum heat insulation plate with the added heat insulation coating is reduced, the vacuum heat insulation plate is about 80% of that of a common vacuum heat insulation plate, the heat insulation effect is obviously improved, and the energy consumption of a refrigerator is reduced.
2. The vacuum insulation panel added with the heat insulation coating realizes the reduction of the heat bridge effect by adopting a method of surface modification of the VIP barrier film on the premise of not changing the material and the structure of the barrier film. Alpha phase Al 3 O 2 The nano particles have better compactness and heat preservation effect; the hybrid graphene aerogel is low in heat conductivity, inhibits the heat conduction efficiency of gas, and is matched with the gas, so that the heat insulation effect of the refrigerator is enhanced.
3. The vacuum insulation panel with the heat insulation coating is improved in mechanical property, plays a certain role in protecting the surface of VIP, and reduces the breakage rejection rate of the VIP to a certain extent.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
In the figure: 11-PE film, 12-EVOH film, 13-aluminized PET film, 14-PET film, 15-PA film, 16-Al film, 2-core material and 3-heat-insulating coating.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application.
The first embodiment is as follows:
as shown in fig. 1, the vacuum insulation panel comprises a core material 2, a barrier film and a getter, wherein the barrier film is coated on the outer surface of the core material 2, and the outer surface of the barrier film is coated with a layer of alpha-phase Al 3 O 2 And the heat insulation coating 3 is formed by the mixed material of the nano powder and the hybrid graphene aerogel. The heat conductivity coefficient of the vacuum heat insulation plate with the heat insulation coating 3 is reduced, the vacuum heat insulation plate is 75% of that of a common vacuum heat insulation plate, the heat insulation effect is obviously improved, and the energy consumption of a refrigerator is reduced. The thickness of the thermal barrier coating 3 is 0.3-1.5mm. Alpha phase Al 3 O 2 The particle size of the nanometer powder is 5-50nm. The vacuum insulation panel added with the heat insulation coating 3 adopts a method of modifying the VIP barrier film on the surface to reduce the heat bridge effect on the premise of not changing the material and the structure of the barrier film. Alpha phase Al 3 O 2 The nano particles have better compactness and heat preservation effect; the hybrid graphene aerogel is low in heat conductivity, inhibits the heat conduction efficiency of gas, and is matched with the gas, so that the heat insulation effect of the refrigerator is enhanced. The barrier film is a key material for ensuring the vacuum effect of the vacuum insulation panel, and if the barrier film is accidentally scratched or punctured in the transportation, installation or use process, the vacuum insulation panel is completely invalid, so that the mechanical property of the barrier film is also a key index of the service life of the barrier film, the vacuum insulation panel with the heat insulation coating is added, the mechanical property is improved, a certain protection effect on the surface of VIP is achieved, and the breakage rejection rate of the VIP is reduced to a certain extent.
The structure of the barrier film is a male-female surface, namely the barrier film is processed into a bag shape, and two surfaces of the bag are provided with 4 layers and 5 layers respectively. The surface with 4 layers of structures is sequentially provided with a PE film 11, an Al film 16, a PET film 14 and a PA film 15 from inside to outside; the other side having a 5-layer structure is a PE film 11, an EVOH film 12, an aluminized PET film 13, a PET film 14, and a PA film 15 in this order. The design of the yin-yang surface has the beneficial effects that: and simultaneously, the VIP plate has double functions of gas resistance and water resistance, so that the sealing property of the VIP plate is improved.
The core material 2 is a glass fiber short filament yarn in a weaving layer shape.
The getter is one or two of metal oxide and metal alloy.
The method for preparing the vacuum insulation panel comprises the steps of firstly manufacturing the barrier film into a bag with an opening on one surface, then putting a core material made of glass fiber into the bag, putting the whole into a vacuum chamber for vacuumizing, and carrying out heat sealing molding after reaching a set vacuum degree.
The method for preparing the surface heat insulation coating of the vacuum heat insulation plate comprises the following steps:
mixing single-component polyurethane adhesive with one or more of toluene, xylene, acetone, methyl ethyl ketone, butanone and ethyl acetate to obtain resin solution, and mixing alpha-phase Al 3 O 2 Dispersing the nano particles and the hybrid graphene aerogel powder particles in the particle dispersion liquid, and performing ultrasonic and stirring for 1-3 hours to obtain a particle composite suspension. Spraying the obtained resin solution on the surface of VIP, and drying the VIP at the temperature of between 25 and 80 ℃ for 0.5 to 2 hours for semi-solidification; and spraying the obtained particle composite suspension on the surface of semi-cured VIP, and drying the semi-cured VIP at the temperature of 25-80 ℃ for 4-12 h for complete curing to obtain a finished product of the vacuum insulation panel subjected to surface treatment.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The vacuum insulation panel comprises a core material, a barrier film and a getter, wherein the barrier film is coated on the outer surface of the core material, and the vacuum insulation panel is characterized in that the outer surface of the barrier film is coated with a layer of heat insulation coating, and the thickness of the heat insulation coating is 0.3-1.5mm.
2. The vacuum insulation panel according to claim 1 wherein the barrier film structure is a male-female surface, and the PE film, the Al film, the PET film, and the PA film are sequentially formed on one surface from inside to outside; the other side is sequentially provided with a PE film, an EVOH film, an aluminized PET film, a PET film and a PA film.
3. Vacuum insulation panel according to claim 1, wherein α phase Al 3 O 2 The particle size of the nanometer powder is 5-50nm.
4. A vacuum insulation panel according to claim 1 wherein said core material is chopped strands of glass fibers in a woven laminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547461.9U CN218762159U (en) | 2021-10-22 | 2021-10-22 | Vacuum heat insulation plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547461.9U CN218762159U (en) | 2021-10-22 | 2021-10-22 | Vacuum heat insulation plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218762159U true CN218762159U (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122547461.9U Active CN218762159U (en) | 2021-10-22 | 2021-10-22 | Vacuum heat insulation plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218762159U (en) |
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2021
- 2021-10-22 CN CN202122547461.9U patent/CN218762159U/en active Active
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