CN108084971B - Composite phase-change material bag and preparation method thereof - Google Patents
Composite phase-change material bag and preparation method thereof Download PDFInfo
- Publication number
- CN108084971B CN108084971B CN201711498988.9A CN201711498988A CN108084971B CN 108084971 B CN108084971 B CN 108084971B CN 201711498988 A CN201711498988 A CN 201711498988A CN 108084971 B CN108084971 B CN 108084971B
- Authority
- CN
- China
- Prior art keywords
- change material
- phase change
- metal layer
- layer
- composite phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/26—Deposition of carbon only
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a composite phase-change material bag and a preparation method thereof, and relates to the field of phase-change materials. The technical problems of low heat conduction efficiency and easy liquid leakage after the foam metal and the phase-change material are compounded in the prior art can be solved by utilizing the composite phase-change material bag, and the aims of improving the heat conduction efficiency and reducing leakage are fulfilled.
Description
Technical Field
The invention relates to the technical field of phase-change materials, in particular to a composite phase-change material bag and a preparation method thereof.
Background
Phase change materials are a general term for substances that utilize the large amount of endothermic and exothermic effects associated with materials during phase change for energy storage and temperature regulation. The phase change material has wide application prospect in a plurality of fields such as building energy conservation, road traffic, modern agricultural greenhouses, solar energy utilization, food refrigeration and transportation, medical care, electronic equipment heat dissipation, sportsman cooling and warm clothing, special temperature control clothing, aerospace science and technology, military infrared camouflage, electric power peak shifting grain filling, industrial waste heat storage and utilization, heat energy recovery and the like.
With the continuous development of metal preparation technology, foam metal is widely applied to the aspects of filtration, shielding, sound absorption, alkaline secondary batteries, catalyst carriers and the like due to the characteristics of light specific gravity, large specific surface area and the like.
At present, a commonly used composite phase change material is formed by using foam metal as a framework, and the foam metal is filled with the phase change material for heat transmission. In the existing phase change materials, the solid-liquid phase change materials are cheap and easy to obtain, and the phase change enthalpy is higher, so the solid-liquid phase change materials are mainly used, but the solid-liquid phase change materials generate liquid phase in the phase change process and have certain fluidity, while the existing conventional packaging materials are metal shells, if the sealing is not good, the metal shells are corroded due to leakage or the environment is polluted. In addition, when the size of the metal foam is large, the heat conduction distance is increased, resulting in a decrease in the heat conductivity thereof.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first objective of the present invention is to provide a composite phase-change material bag to alleviate the technical problems of low heat conduction efficiency and easy liquid leakage after the foam metal and the phase-change material are compounded in the prior art.
The second purpose of the invention is to provide a preparation method of the composite phase-change material bag, which has the advantages of simple process flow and suitability for industrial production.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the utility model provides a compound phase change material package, obtains compound phase change material vacuum seal with the plastic-aluminum membrane, compound phase change material includes foam metal layer and the graphite alkene layer with the lamellar structure setting in turn, the foam metal layer contains phase change material.
Further, the foamed metal layer comprises a foamed copper metal layer or a foamed aluminum metal layer;
preferably, when the foamed metal layer is a copper foam metal layer, the weight percentage of the phase change material in the copper foam metal layer is 82% -90%;
preferably, when the foamed metal layer is an aluminum foamed metal layer, the weight percentage of the phase change material in the aluminum foamed metal layer is 86% -93%.
Further, the outermost layer of the composite phase change material is a graphene layer.
Further, the foam metal layer and the graphene layer are at least 3 layers respectively.
Further, the thickness of each metal foam layer is 0.3-1cm, preferably 0.3-0.8 cm.
Further, the thickness of each graphene metal layer is 0.1-0.3cm, preferably 0.15-0.25 cm.
Further, the phase change material comprises an organic phase change material and an inorganic phase change material.
Further, the organic phase change material includes paraffin, stearic acid, or lauric acid.
Further, the inorganic phase change material includes an inorganic hydrated salt.
According to the preparation method of the composite phase change material bag, the phase change material is filled in the foamed copper metal layer by using a vacuum impregnation method, then the graphene layer is prepared on the surface of the foamed copper metal layer by using a deposition method to obtain the composite phase change material, and then the composite phase change material is sealed and packaged by using an aluminum plastic film to obtain the composite phase change material bag.
Compared with the prior art, the invention has the following beneficial effects:
the composite phase change material bag provided by the invention takes the aluminum plastic film as a packaging material, and replaces the traditional metal shell packaging material. Vacuum packaging can be realized by packaging with the aluminum plastic film. The vacuum package can effectively prevent the phase change material from flowing out and leaking after being liquefied by utilizing the effect of atmospheric pressure difference between the inside and the outside. Meanwhile, the composite phase change material can be packaged in any shape by packaging with the aluminum plastic film, so that the packaging box is convenient to use.
In addition, in the composite phase change material bag provided by the invention, the graphene layers and the copper foam metal layers are alternately arranged, namely a layer of graphene with better heat conductivity is inserted between the copper foam metal layers as an intermediate heat conduction layer, so that the heat transfer distance of the copper foam metal layers is reduced, and the heat conductivity of the composite phase change material is improved.
In addition, when the surface heat of an object needing cooling is uneven, the heat received by the phase-change material in contact with the object is different, and due to the blocking effect of the holes in the foam copper metal layers, the heat is easy to gather.
Moreover, after the phase-change material in the foam copper metal layer absorbs heat and liquefies, certain barrier effect can exist on the leakage of liquid due to the barrier effect of the graphene layer, so that the service life of the composite phase-change material can be prolonged, and the environmental pollution is reduced.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
One aspect of the invention provides a composite phase change material bag, which is obtained by vacuum sealing a composite phase change material by using an aluminum plastic film, wherein the composite phase change material comprises a foam metal layer and a graphene layer which are alternately arranged in a layered structure, and the foam metal layer contains the phase change material.
The composite phase change material bag provided by the invention takes the aluminum plastic film as a packaging material, and replaces the traditional metal shell packaging material. Vacuum packaging can be realized by packaging with the aluminum plastic film. The vacuum package can effectively prevent the phase change material from flowing out and leaking after being liquefied by utilizing the effect of atmospheric pressure difference between the inside and the outside. Meanwhile, the composite phase change material can be packaged in any shape by packaging with the aluminum plastic film, so that the packaging box is convenient to use.
In addition, in the composite phase change material bag provided by the invention, the graphene layers and the copper foam metal layers are alternately arranged, namely a layer of graphene with better heat conductivity is inserted between the copper foam metal layers as an intermediate heat conduction layer, so that the heat transfer distance of the copper foam metal layers is reduced, and the heat conductivity of the composite phase change material is improved.
In addition, when the surface heat of an object needing cooling is uneven, the heat received by the phase-change material in contact with the object is different, and due to the blocking effect of the holes in the foam copper metal layers, the heat is easy to gather.
Moreover, after the phase-change material in the foam copper metal layer absorbs heat and liquefies, certain barrier effect can exist on the leakage of liquid due to the barrier effect of the graphene layer, so that the service life of the composite phase-change material can be prolonged, and the environmental pollution is reduced.
Graphene has very good thermal conductivity. The pure defect-free single-layer graphene has the thermal conductivity coefficient as high as 5300W/mK, is the carbon material with the highest thermal conductivity coefficient so far, and is higher than that of a single-wall carbon nanotube (3500W/mK) and a multi-wall carbon nanotube (3000W/mK). When it is used as carrier, its thermal conductivity can reach 600W/mK. After the graphene is used as the middle heat conduction layer and inserted into the surface of the foamed aluminum metal layer, the heat conductivity of the whole composite phase change material can be obviously improved, and particularly, when the foamed aluminum metal layer to be manufactured is thick, the heat conduction effect is more obvious. Meanwhile, the graphene layer covers the holes of the foamed aluminum metal layer, so that when the phase change material is changed from solid to liquid, the liquid can be prevented from leaking to a certain extent.
As a preferred embodiment of the present invention, the foamed metal layer includes a foamed copper metal layer or a foamed aluminum metal layer; preferably, when the foamed metal layer is a copper foam metal layer, the weight percentage of the phase change material in the copper foam metal layer is 82% -90%; preferably, when the foamed metal layer is an aluminum foamed metal layer, the weight percentage of the phase change material in the aluminum foamed metal layer is 86% -93%.
The foam copper is a novel multifunctional material with a large number of communicated or non-communicated holes uniformly distributed in a copper matrix. The copper foam has excellent electric conductivity, ductility and heat conductivity, and the phase change material is filled in the copper foam by using the copper foam as a framework, so that the heat conductivity of the copper foam can be increased.
Foamed aluminum is a novel multifunctional material with a large number of connected or disconnected holes uniformly distributed in an aluminum matrix. The foamed aluminum has the advantages of small density, high impact absorption capacity, high temperature resistance, high fireproof performance and the like, and the foamed aluminum is used as a framework, so that the phase-change material is filled in the framework, and the heat conductivity of the foamed aluminum can be increased.
The heat absorption capacity of the phase-change material can be improved by increasing the weight percentage of the phase-change material, and the heat conductivity of the composite phase-change material is further improved.
In the above preferred embodiment, the weight percentage of the phase change material in the copper foam metal layer may be, for example and without limitation: 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89% or 90%.
In the above preferred embodiment, the weight percentage of the phase change material in the foamed aluminum metal layer may be, for example and without limitation: 86%, 87%, 88%, 89%, 90%, 91%, 92% or 93%.
In a preferred embodiment of the present invention, the outermost layer of the composite phase change material is a graphene layer. The outmost layer is provided with the graphene layer, so that heat on an external object can be rapidly led out when the composite phase change material is in contact with the object needing heat conduction, and the heat conduction efficiency is improved. In addition, the outermost layer is the graphene layer, so that the anti-leakage performance can be further improved.
As a preferred embodiment of the present invention, the foamed metal layer and the graphene layer are at least 3 layers, respectively. At least 3 layers are provided to ensure the heat conduction effect. The more the number of layers of graphene arranged in unit volume is, the better the heat conduction effect is. The specific layer number of each layer is set according to the actual use condition and the specific size of the composite phase change material.
As a preferred embodiment of the invention, the thickness of each metal foam layer is from 0.3 to 1cm, preferably from 0.3 to 0.8 cm. The thickness of the foam metal layer cannot be too thin, otherwise the function of the foam metal layer as a framework is influenced, and the integral rigidity is reduced; at the same time, the thickness of the foam metal layer must not be too thick, otherwise the overall thermal conductivity will be reduced. By optimizing the thickness of the foam metal layer, the heat-conducting property of the composite phase-change material can be improved while the integral rigidity of the composite phase-change material is not reduced. The thickness of each metal foam layer can be, for example and without limitation: 0.3cm, 0.4cm, 0.5cm, 0.6cm, 0.7cm, 0.8cm, 0.9cm or 1 cm.
In a preferred embodiment of the present invention, the thickness of each graphene metal layer is 0.1 to 0.3cm, preferably 0.15 to 0.25 cm. The heat conducting property of the composite phase change material can be further improved by optimizing the thickness of the graphene layer. Wherein, the thickness of each graphene metal layer is typically but not limited to, for example, can be: 0.1cm, 0.15cm, 0.2cm, 0.25cm or 0.3 cm.
As a preferred embodiment of the present invention, the phase change material includes an organic phase change material and an inorganic phase change material. Optionally, the organic phase change material comprises paraffin, stearic acid or lauric acid. Optionally, the inorganic phase change material comprises an inorganic hydrated salt.
The second aspect of the invention provides a preparation method of the composite phase-change material bag, which comprises the steps of filling a phase-change material into a foamed copper metal layer by using a vacuum impregnation method, preparing a graphene layer on the surface of the foamed copper metal layer by using a deposition method to obtain the composite phase-change material, and sealing and packaging the composite phase-change material by using an aluminum-plastic film to obtain the composite phase-change material bag.
In an embodiment of the present invention, a method for preparing the composite phase-change material pack includes: heating and melting the phase-change material, placing the phase-change material in a vacuum impregnator, wherein the volume of the phase-change material placed in the vacuum impregnator is 40-70% of the volume of the vacuum impregnator, and the temperature of the vacuum impregnator is 6-8 ℃ higher than the phase-change temperature of the phase-change material so that the phase-change material is kept in a liquid state; placing foamed aluminum metal into a vacuum impregnator with a liquid phase change material inside for vacuum impregnation, taking out the foamed aluminum metal after the foamed aluminum metal adsorbs the full phase change material, and cooling and solidifying the foamed aluminum metal to obtain a foamed aluminum metal layer containing the phase change material; then placing the contained foamed aluminum metal layer in chemical vapor deposition equipment, and preparing a graphene layer on the surface of the foamed aluminum metal layer by using a chemical vapor deposition method to obtain the composite phase change material; and then, the composite phase change material is sealed and packaged by an aluminum plastic film to obtain the composite phase change material bag.
The present invention will be described in further detail with reference to examples and comparative examples.
Example 1
The embodiment is a compound phase change material package, obtains compound phase change material vacuum seal with the plastic-aluminum membrane, and wherein, compound phase change material is for using foamy copper metal level and the graphite alkene layer that the lamellar structure set up in turn, the foamy copper metal level contains paraffin, compound phase change material's outmost be graphite alkene layer, compound phase change material's both sides all are equipped with graphite alkene layer promptly. Wherein, the foamy copper metal layer is 3 layers, and the graphite alkene layer is 4 layers. The thickness of each copper foam metal layer is 0.3 cm. The thickness of each graphene metal layer is 0.1 cm. The weight percentage of the phase change material in the copper foam metal layer is 82%.
Example 2
The embodiment is a compound phase change material package, obtains compound phase change material vacuum seal with the plastic-aluminum membrane, and wherein, compound phase change material is for using foamy copper metal level and the graphite alkene layer that the lamellar structure set up in turn, the foamy copper metal level contains stearic acid, compound phase change material's outmost be graphite alkene layer, compound phase change material's both sides all are equipped with graphite alkene layer promptly. The metal layer of the foam copper is 4 layers, and the graphene layer is 5 layers. The thickness of each copper foam metal layer is 0.6 cm. The thickness of each graphene metal layer is 0.2 cm. The weight percentage of the phase change material in the copper foam metal layer is 84%.
Example 3
The embodiment is a compound phase change material package, obtains compound phase change material vacuum seal with the plastic-aluminum membrane, and wherein, compound phase change material is foamy copper metal level and graphite alkene layer for using the lamellar structure setting in turn, the foamy copper metal level contains lauric acid, compound phase change material's outmost be graphite alkene layer, compound phase change material's both sides all are equipped with graphite alkene layer promptly. The metal layer of the foam copper is 4 layers, and the graphene layer is 5 layers. The thickness of each copper foam metal layer is 0.8 cm. The thickness of each graphene metal layer is 0.3 cm. The weight percentage of the phase-change material in the copper foam metal layer is 86%.
Example 4
The embodiment is a compound phase change material package, obtains compound phase change material vacuum seal with the plastic-aluminum membrane, and wherein, compound phase change material is foamy copper metal level and graphite alkene layer for using the lamellar structure setting in turn, the foamy copper metal level contains inorganic hydrated salt, compound phase change material's outmost is graphite alkene layer, and compound phase change material's both sides all are equipped with graphite alkene layer promptly. The metal layer of the foam copper is 4 layers, and the graphene layer is 5 layers. The thickness of each copper foam metal layer is 0.8 cm. The thickness of each graphene metal layer is 0.3 cm. The weight percentage of the phase-change material in the copper foam metal layer is 90%.
Comparative example 1
The composite phase change material bag is obtained by vacuum sealing the composite phase change material by using an aluminum plastic film, wherein the composite phase change material comprises foam metal copper serving as a framework structure and paraffin impregnated in the foam metal copper. The thickness of the composite phase change material is 1.3 cm. The weight percentage of the phase change material in the copper foam metal layer is 82%.
Comparative example 2
The composite phase change material bag is obtained by vacuum sealing the composite phase change material by using an aluminum plastic film, wherein the composite phase change material comprises foam metal copper serving as a framework structure and stearic acid immersed in the foam metal copper. The thickness of the composite phase change material is 3.4 cm. The weight percentage of the phase change material in the copper foam metal layer is 84%.
Comparative example 3
The composite phase change material bag is obtained by vacuum sealing the composite phase change material by using an aluminum plastic film, wherein the composite phase change material comprises foam metal copper serving as a framework structure and lauric acid soaked in the foam metal copper. The thickness of the composite phase change material is 4.7 cm. The weight percentage of the phase-change material in the copper foam metal layer is 86%.
Comparative example 4
The composite phase change material bag is obtained by vacuum sealing the composite phase change material by using an aluminum plastic film, wherein the composite phase change material comprises foam metal copper serving as a framework structure and inorganic hydrated salt immersed in the foam metal copper. The thickness of the composite phase change material is 4.7 cm. The weight percentage of the phase-change material in the copper foam metal layer is 90%.
Example 5
The embodiment is a compound phase change material package, obtains compound phase change material vacuum seal with the plastic-aluminum membrane, and wherein, compound phase change material is foamed aluminium metal layer and the graphite alkene layer that sets up in turn for using the lamellar structure, foamed aluminium metal layer contains paraffin, compound phase change material's outmost graphite alkene layer that is, compound phase change material's both sides all are equipped with graphite alkene layer promptly. Wherein, foamed aluminium metal layer is 3 layers, and graphite alkene layer is 4 layers. The thickness of each foamed aluminum metal layer was 0.3 cm. The thickness of each graphene metal layer is 0.1 cm. The weight percentage of the phase change material in the foamed aluminum metal layer was 86%.
Example 6
This embodiment is a compound phase change material package, obtains compound phase change material vacuum seal with the plastic-aluminum membrane, and wherein, compound phase change material is foam aluminium metal layer and the graphite alkene layer that sets up in turn for using the lamellar structure, foam aluminium metal layer contains stearic acid, compound phase change material's outmost graphite alkene layer that is, compound phase change material's both sides all are equipped with graphite alkene layer promptly. Wherein, the foamed aluminum metal layer is 4 layers, and the graphene layer is 5 layers. The thickness of each foamed aluminum metal layer was 0.6 cm. The thickness of each graphene metal layer is 0.2 cm. The weight percentage of the phase change material in the foamed aluminum metal layer was 88%.
Example 7
The embodiment is a compound phase change material package, obtains compound phase change material vacuum seal with the plastic-aluminum membrane, and wherein, compound phase change material is foam aluminium metal layer and the graphite alkene layer that sets up in turn for using the lamellar structure, foam aluminium metal layer contains lauric acid, compound phase change material's outmost graphite alkene layer that is, compound phase change material's both sides all are equipped with graphite alkene layer promptly. Wherein, the foamed aluminum metal layer is 4 layers, and the graphene layer is 5 layers. The thickness of each foamed aluminum metal layer was 0.8 cm. The thickness of each graphene metal layer is 0.3 cm. The weight percentage of the phase change material in the foamed aluminum metal layer is 90%.
Example 8
The embodiment is a compound phase change material package, obtains compound phase change material vacuum seal with the plastic-aluminum membrane, and wherein, compound phase change material is foam aluminium metal layer and the graphite alkene layer that sets up in turn for using the lamellar structure, foam aluminium metal layer contains inorganic hydrated salt, compound phase change material's outmost graphite alkene layer that is, compound phase change material's both sides all are equipped with graphite alkene layer promptly. Wherein, the foamed aluminum metal layer is 4 layers, and the graphene layer is 5 layers. The thickness of each foamed aluminum metal layer was 0.8 cm. The thickness of each graphene metal layer is 0.3 cm. The weight percentage of the phase change material in the foamed aluminum metal layer was 92%.
Comparative example 5
The composite phase change material bag is obtained by vacuum sealing the composite phase change material by using an aluminum-plastic film, wherein the composite phase change material comprises foamed metal aluminum serving as a framework structure and paraffin wax soaked in the foamed metal aluminum. The thickness of the composite phase change material is 1.3 cm. The weight percentage of the phase change material in the foamed aluminum metal layer was 86%.
Comparative example 6
The composite phase change material bag is obtained by vacuum sealing the composite phase change material by using an aluminum-plastic film, wherein the composite phase change material comprises foamed metal aluminum serving as a framework structure and stearic acid soaked in the foamed metal aluminum. The thickness of the composite phase change material is 3.4 cm. The weight percentage of the phase change material in the foamed aluminum metal layer was 88%.
Comparative example 7
The composite phase change material bag is obtained by vacuum sealing the composite phase change material by using an aluminum-plastic film, wherein the composite phase change material comprises foamed metal aluminum serving as a framework structure and lauric acid soaked in the foamed metal aluminum. The thickness of the composite phase change material is 4.7 cm. The weight percentage of the phase change material in the foamed aluminum metal layer is 90%.
Comparative example 8
The composite phase change material bag is obtained by vacuum sealing the composite phase change material by using an aluminum-plastic film, wherein the composite phase change material comprises foamed metal aluminum serving as a framework structure and inorganic hydrated salt immersed in the foamed metal aluminum. The thickness of the composite phase change material is 4.7 cm. The weight percentage of the phase change material in the foamed aluminum metal layer was 92%.
Performance testing
The heat conduction test is performed by using the composite phase change material bags provided in the embodiments 1 to 8 and the comparative examples 1 to 8, one side of the composite phase change material bag is attached to the surface of a heating device with the temperature of 100 ℃, and the temperature of the other side of the composite phase change material is monitored by using a thermometer. When the temperature of the other side of the composite phase change material reached 100 ℃, the time elapsed from the placement of the composite phase change material on the surface of the heat generating device to the time the temperature reached 100 ℃ was recorded. At the same time, the experiment was repeated until there was liquid exudation on the surface of the packaging film, and the number of cycles experienced by each composite phase change material at that time was recorded. The test results are shown in Table 1.
TABLE 1 examination results of examples and comparative examples
| Test items | Temperature rise time/s | Number of cycles/time to leak |
| Example 1 | 1500 | 800 |
| Example 2 | 2550 | 1370 |
| Example 3 | 3900 | 1540 |
| Example 4 | 4000 | 1620 |
| Comparative example 1 | 2200 | 530 |
| Comparative example 2 | 3460 | 860 |
| Comparative example 3 | 4800 | 980 |
| Comparative example 4 | 5500 | 1090 |
| Example 5 | 1860 | 860 |
| Example 6 | 3020 | 1410 |
| Example 7 | 4350 | 1630 |
| Example 8 | 4810 | 1790 |
| Comparative example 5 | 2430 | 600 |
| Comparative example 6 | 3720 | 940 |
| Comparative example 7 | 5130 | 1070 |
| Comparative example 8 | 5760 | 1180 |
As can be seen from the data in table 1, the temperature rise times of the foam metal layers impregnated with different phase change materials were different. As can be seen from the experimental data of examples and comparative examples, if the graphene layer is reduced, the temperature rise time increases and the cycle number at the time of bleeding decreases. Therefore, the graphene layer can be added to remarkably improve the heat conduction efficiency and reduce the leakage.
While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (10)
1. The composite phase change material bag is characterized in that an aluminum plastic film is used for sealing a composite phase change material in vacuum, the composite phase change material comprises a foam metal layer and a graphene layer which are alternately arranged in a layered structure, and the foam metal layer contains the phase change material;
the foamed metal layer comprises a foamed copper metal layer or a foamed aluminum metal layer;
when the foamed metal layer is a foamed aluminum metal layer, the weight percentage of the phase change material in the foamed aluminum metal layer is 86% -93%;
the outermost layer of the composite phase change material is a graphene layer;
the foam metal layer and the graphene layer are at least 3 layers respectively.
2. The composite phase change material pack according to claim 1, wherein when the metal foam layer is a copper foam layer, the weight percentage of the phase change material in the copper foam layer is 82% -90%.
3. The pack according to claim 1 or 2, wherein each layer of copper foam metal has a thickness of 0.3-1 cm.
4. The pack according to claim 3, wherein each layer of copper foam metal has a thickness of 0.3-0.8 cm.
5. The pack of composite phase change materials according to claim 1 or 2, wherein each graphene metal layer has a thickness of 0.1-0.3 cm.
6. The pack of composite phase change materials according to claim 5, wherein each graphene metal layer has a thickness of 0.15-0.25 cm.
7. The composite phase change material pack according to claim 1, wherein the phase change material comprises an organic phase change material and an inorganic phase change material.
8. The composite phase change material pack according to claim 7, wherein the organic phase change material comprises paraffin, stearic acid, or lauric acid.
9. The cartridge of claim 7, wherein the inorganic phase change material comprises an inorganic hydrated salt.
10. The preparation method of the composite phase-change material bag according to any one of claims 1 to 9, wherein the composite phase-change material bag is obtained by filling a phase-change material in a copper foam metal layer by a vacuum impregnation method, preparing a graphene layer on the surface of the copper foam metal layer by a deposition method to obtain the composite phase-change material, and then hermetically packaging the composite phase-change material by an aluminum plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711498988.9A CN108084971B (en) | 2017-12-29 | 2017-12-29 | Composite phase-change material bag and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711498988.9A CN108084971B (en) | 2017-12-29 | 2017-12-29 | Composite phase-change material bag and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108084971A CN108084971A (en) | 2018-05-29 |
| CN108084971B true CN108084971B (en) | 2021-03-02 |
Family
ID=62181463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711498988.9A Active CN108084971B (en) | 2017-12-29 | 2017-12-29 | Composite phase-change material bag and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108084971B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379875A (en) * | 2018-09-10 | 2019-02-22 | 天津大学 | Miniature temperature control structural unit |
| CN113875082B (en) * | 2019-03-21 | 2023-01-31 | 合肥国轩高科动力能源有限公司 | Thermally conductive anisotropic multilayer composites for high security bag designs |
| CN109915894A (en) * | 2019-04-22 | 2019-06-21 | 珠海格力电器股份有限公司 | Heat storage type electric heater |
| CN110387215B (en) * | 2019-05-30 | 2021-04-20 | 中国人民解放军国防科技大学 | Graphene foam phase-change composite material with sparse thermal protection structure and preparation method thereof |
| CN110591656B (en) * | 2019-10-15 | 2021-05-28 | 中国科学技术大学先进技术研究院 | Composite phase change material for heating non-combustion type tobacco heat source and preparation method thereof |
| CN111319790A (en) * | 2020-03-11 | 2020-06-23 | 浙江时空道宇科技有限公司 | Star sensor support |
| CN112961425A (en) * | 2021-02-20 | 2021-06-15 | 中国天楹股份有限公司 | Heat storage material prepared by utilizing waste package and preparation method thereof |
| CN115534494A (en) * | 2022-10-13 | 2022-12-30 | 合肥工业大学 | Cu/graphene film laminated composite material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585776A (en) * | 2012-01-20 | 2012-07-18 | 中国科学院上海硅酸盐研究所 | Three-dimensional graphene/phase change energy storage composite material and preparation method thereof |
| CN104466303A (en) * | 2013-09-24 | 2015-03-25 | 微宏动力系统（湖州）有限公司 | Phase-change battery pack |
| CN105492566A (en) * | 2013-08-29 | 2016-04-13 | 得克萨斯系统大学董事会 | Thermal storage units, components thereof, and methods of making and using them |
| CN106298274A (en) * | 2015-05-26 | 2017-01-04 | 中国科学院上海硅酸盐研究所 | A kind of novel graphene/carbon pipe/graphene composite material, with and its preparation method and application |
| CN106494028A (en) * | 2016-12-28 | 2017-03-15 | 镇江博昊科技有限公司 | A kind of flexible multi-layered graphene composite film and preparation method thereof |
| CN106497522A (en) * | 2016-10-21 | 2017-03-15 | 中南大学 | A kind of foam diamond strengthens paraffin wax phase change energy storage material and preparation method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660230A (en) * | 2012-04-01 | 2012-09-12 | 郑德强 | Heat superconducting composite phase change energy storage material |
| US9605193B2 (en) * | 2012-10-19 | 2017-03-28 | The Hong Kong University Of Science And Technology | Three dimensional interconnected porous graphene-based thermal interface materials |
-
2017
- 2017-12-29 CN CN201711498988.9A patent/CN108084971B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585776A (en) * | 2012-01-20 | 2012-07-18 | 中国科学院上海硅酸盐研究所 | Three-dimensional graphene/phase change energy storage composite material and preparation method thereof |
| CN105492566A (en) * | 2013-08-29 | 2016-04-13 | 得克萨斯系统大学董事会 | Thermal storage units, components thereof, and methods of making and using them |
| CN104466303A (en) * | 2013-09-24 | 2015-03-25 | 微宏动力系统（湖州）有限公司 | Phase-change battery pack |
| CN106298274A (en) * | 2015-05-26 | 2017-01-04 | 中国科学院上海硅酸盐研究所 | A kind of novel graphene/carbon pipe/graphene composite material, with and its preparation method and application |
| CN106497522A (en) * | 2016-10-21 | 2017-03-15 | 中南大学 | A kind of foam diamond strengthens paraffin wax phase change energy storage material and preparation method |
| CN106494028A (en) * | 2016-12-28 | 2017-03-15 | 镇江博昊科技有限公司 | A kind of flexible multi-layered graphene composite film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 硬脂酸甘油酯/泡沫金属相变材料储热性能;程晓敏等;《武汉理工大学学报》;20150828;第37卷(第8期);第7页第3段 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108084971A (en) | 2018-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108084971B (en) | Composite phase-change material bag and preparation method thereof | |
| CN108219755B (en) | Composite phase-change material with foamed aluminum as matrix, preparation method thereof and heat storage bag | |
| CN108048046B (en) | Composite phase-change material with foamy copper as matrix, preparation method thereof and heat storage bag | |
| CN105206895B (en) | The cooling means of battery pack and the battery pack with cooling device | |
| Chen et al. | Effects of different phase change material thermal management strategies on the cooling performance of the power lithium ion batteries: A review | |
| Sharma et al. | Latent heat storage materials and systems: a review | |
| US20170125866A1 (en) | Novel thermal management solution for battery pack | |
| CN106654430B (en) | One kind is based on power battery thermal management system in a low temperature of heat pipe and phase-change material | |
| CN102585776A (en) | Three-dimensional graphene/phase change energy storage composite material and preparation method thereof | |
| CN201088710Y (en) | Heat-preservation, storage and transportation of blood box | |
| CN108139176A (en) | For storage device or the modular assembly of battery | |
| CN108808160B (en) | High-strength heat transfer structure for cooling power battery | |
| CN203503756U (en) | Thermal management system of power battery based on flat plate loop heat pipes | |
| CN205335394U (en) | Group battery with cooling device | |
| TW202027331A (en) | Anti-heating battery module and fire proof layer | |
| CN110880629A (en) | Radiating group battery device of phase change material is assisted to graphite alkene | |
| CN210430029U (en) | Plate-type heating and cooling heat conduction device and temperature-controllable lithium battery pack adopting same | |
| WO2020046385A1 (en) | A temperature stabilizing cargo compartment comprised of a plurality of layers | |
| CN106788237B (en) | A kind of Novel photo modification high-efficiency photovoltaic system | |
| CN215418313U (en) | Uniform temperature battery shell | |
| CN103367837A (en) | Power battery thermal management system based on flat loop heat pipes | |
| JP2013087276A (en) | Form of latent heat storage body | |
| CN115939911B (en) | Phase-change energy-storage cold-storage box body of laser | |
| Yang et al. | A comprehensive review of phase change film for energy storage: Preparation, properties and applications | |
| CN107871916B (en) | Temperature control device for lithium ion battery and lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |