CN212560079U - Single-sided graphene heat dissipation film - Google Patents
Single-sided graphene heat dissipation film Download PDFInfo
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- CN212560079U CN212560079U CN202020291976.XU CN202020291976U CN212560079U CN 212560079 U CN212560079 U CN 212560079U CN 202020291976 U CN202020291976 U CN 202020291976U CN 212560079 U CN212560079 U CN 212560079U
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Abstract
The utility model belongs to the technical field of the heat conduction material, concretely relates to single face graphite alkene heat dissipation membrane, include: the graphene layer, the natural graphite layer and the PET double-sided silica gel film; the natural graphite layer is a middle layer, one surface of the natural graphite layer is coated with the graphene layer, and the other surface of the natural graphite layer is pasted with the PET double-sided silica gel film. The utility model discloses production simple process, the operation of being convenient for, and the product quality who obtains is stable, and is effectual, is suitable for popularization and application. The utility model discloses be fit for using in the high heat dissipation of all kinds of electronic product, can improve the functioning speed of electronic product and user's comfort level, increase the life of product.
Description
Technical Field
The utility model belongs to the technical field of the heat conduction material, concretely relates to single face graphite alkene heat dissipation membrane and preparation method.
Background
With the expansion and popularization of the application range of electronic and electrical devices, the requirements on the performance and structure of the electronic devices are more and more strict, including higher processing speed, higher processing frequency, smaller volume, lighter weight and higher power. The upgrading of electronic equipment brings great convenience and excellent experience to the life of people, and also brings the problems of more heat generation, more serious electromagnetic wave pollution and the like.
At present, the domestic and international heat dissipation products mainly dissipate heat by artificial graphite, natural graphite and metal materials. The artificial graphite coiled material is one of main products in the current market, but because the natural graphite film can be made thick and has high hot melt ratio, a plurality of large-size TV manufacturers select the natural graphite film for heat dissipation on a 4-8K-level TV display screen of a display module. However, the natural graphite film is difficult to produce in large-size processing, high in loss rate and lack of compound matching equipment. The graphene products also present bottlenecks in the production and market application fields.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defect that exists among the prior art, providing a heat dispersion is good, can reduce electromagnetic pollution's graphite alkene heat dissipation membrane simultaneously.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a single face graphite alkene heat dissipation membrane which characterized in that: the method comprises the following steps: the graphene layer, the natural graphite layer and the PET double-sided silica gel film; the natural graphite layer is a middle layer, one surface of the natural graphite layer is coated with the graphene layer, and the other surface of the natural graphite layer is pasted with the PET double-sided silica gel film.
Furthermore, the thickness of the natural graphite layer is 0.025-1 mm, the length is 200m, and the width is 520-1000 mm.
Further, the graphene layer is coated on the surface of the natural graphite layer by using a graphene oxide solution, and then reduction is performed to obtain the graphene.
Furthermore, an EP/DDM curing agent is added into the graphene oxide solution.
Further, the graphene oxide solution is coated on the natural graphite layer by using a line coating device.
Furthermore, the viscosity of the PET double-sided silica gel film is 800-1500G.
Furthermore, the thickness of the PET double-sided silica gel film is 0.01-0.05 mm.
The utility model discloses a single face graphite alkene heat dissipation membrane and preparation method's beneficial effect is:
1. the utility model discloses a single face graphite alkene heat dissipation membrane, production simple process, the operation of being convenient for, and the product quality who obtains is stable, and is effectual, is suitable for popularization and application.
2. The utility model discloses a single face graphite alkene heat dissipation membrane has high radiating effect, is fit for using in the high heat dissipation of all kinds of electronic product, can improve electronic product's functioning speed and user's comfort level, increases the life of product.
3. The utility model provides a market application difficult problem of graphite alkene powder product, expanded the application space of china graphite alkene product in consumer electronics product.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of an embodiment of the single-sided graphene heat dissipation film of the present invention.
In the figure, 1, a graphene layer; 2. a natural graphite layer; 3. PET double-sided silica gel membrane.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1 the utility model discloses a schematic diagram of a specific embodiment of single face graphite alkene heat dissipation membrane, the intermediate level is natural graphite layer 2, and on PET two-sided silica gel membrane 3 was laminated to natural graphite layer 2's the back, positive coating oxidation graphite alkene then reduced into graphite alkene, formed graphite alkene layer 1. The PET double-sided silica gel membrane 3 has good flexibility, the natural graphite layer 2 and the graphene layer 1 both have good heat-conducting performance, and the graphene layer 1 has good toughness.
Taking the manufacturing method for manufacturing the TYGOGS-0100J type single-sided graphene heat dissipation film as an example, the method comprises the following steps:
s1: and soaking and stirring the graphene oxide in water by ultrasonic waves to prepare a graphene oxide solution.
S2: attaching a PET double-sided silica gel film with the thickness of 0.01mm +/-0.01 mm, the width of 520mm and the length of 100m to the back of the natural graphite coiled material, wherein the PET double-sided silica gel film is 0.01mm in thickness and 1000g +/-200 g in viscosity, and preparing the natural graphite gum coiled material for later use.
S3: and (3) coating the graphene oxide solution prepared in the step (S1) on the front surface of the natural graphite gum coiled material prepared in the step (S2), continuously drying, reducing the graphene oxide into graphene by using a reducing agent, wherein the thickness of the dried graphene layer is 0.03mm, so that the single-sided graphene heat dissipation film is prepared, and the total thickness is about 0.1 mm. Finally, the single-sided graphene heat dissipation film coiled material is produced.
In order to manufacture single-sided graphene heat dissipation films with different thicknesses and different models, different thicknesses can be set for the graphene layer, the natural graphite layer and the PET double-sided silica gel film respectively. For example, in the manufacture of TYGOGS-0100J type products, the thickness of a natural graphite layer is 0.05mm +/-0.01 mm, the thickness of a PET double-sided silica gel film is 0.01mm, the thickness of a graphene layer is 0.03mm, and the total thickness of the final single-sided graphene heat dissipation film is about 0.1 mm. Manufacturing a TYGOGS-0500J type product, selecting a natural graphite layer with the thickness of 0.45mm +/-0.03 mm, a PET double-sided silica gel film with the thickness of 0.03mm, a graphene layer with the thickness of 0.03mm, and finally obtaining a single-sided graphene heat dissipation film with the total thickness of about 0.5 mm. Manufacturing a TYGOGS-1000J type product, selecting a natural graphite layer with the thickness of 0.94mm +/-0.1 mm, a PET double-sided silica gel film with the thickness of 0.03mm, a graphene layer with the thickness of 0.03mm, and finally obtaining a single-sided graphene heat dissipation film with the total thickness of about 1.00 mm.
Preferably, when the graphene oxide solution is prepared in step S1, the EP/DDM curing agent is added, ultrasonic soaking and stirring are performed, the stirring speed is set to 5000-.
Preferably, the addition amount of the EP/DDM curing agent is 1-2% of the total weight of the graphene oxide and the water.
Preferably, in step S3, the reducing agent used for reducing the graphene oxide is urea and/or ascorbic acid.
Preferably, in step S3, in order to improve the production efficiency, a linear coating device is used to coat the graphene oxide solution on the front surface of the natural graphite coiled material, and then the natural graphite coiled material is continuously dried at 80-130 ℃.
In order to detect the heat conductivity of the obtained single-sided graphene heat dissipation film, a heat conductivity test is performed on the single-sided graphene heat dissipation film, and the process is as follows:
test equipment
AT330 Analyzer, Germany Naichi 467
Test sample
Single-sided graphene heat dissipation film with model numbers of TYGOGGS-0100J, TYGOGS-0500J, TYGOGS-1000J respectively
Basis of test
ASTM E1461-13, ASTM E1269-11, GB/T1033.1-2008 test method for thermal conductivity of material
Test results
The test result of the single-sided graphene heat dissipation film with the type TYGOGGS-0100J is as follows:
thermal diffusion coefficient-NETZSCH LFA analysis
The test result of the single-sided graphene heat dissipation film with the type of TYGOGS-0500J is as follows:
thermal diffusion coefficient-NETZSCH LFA analysis
The test result of the graphene heat dissipation film with the type TYGOGS-1000J is as follows:
thermal diffusion coefficient-NETZSCH LFA analysis
From the above test results, the thermal diffusion coefficient of the single-sided graphene heat dissipation film with the type TYGOGS-0100J is as follows: 292.134mm2S, coefficient of thermal conductivity of：359.450W/(m·K)。
The type is single face graphite alkene heat dissipation membrane thermal diffusivity of TYGOGGS-0100J: 241.980mm2And/s, thermal conductivity is: 272.312W/(m.K).
The type is single face graphite alkene heat dissipation membrane thermal diffusivity of TYGOGGS-0100J: 240.345mm2And/s, thermal conductivity is: 284.466W/(m.K).
Therefore, the utility model discloses a single face graphite alkene heat dissipation membrane has good heat conductivility.
It should be understood that the above description of the specific embodiments is only for the purpose of explanation and not for the purpose of limitation. Obvious changes or variations caused by the spirit of the present invention are within the scope of the present invention.
Claims (4)
1. The utility model provides a single face graphite alkene heat dissipation membrane which characterized in that: the method comprises the following steps: the graphene layer, the natural graphite layer and the PET double-sided silica gel film; the natural graphite layer is a middle layer, one surface of the natural graphite layer is coated with the graphene layer, and the other surface of the natural graphite layer is pasted with the PET double-sided silica gel film.
2. The single-sided graphene heat spreading film according to claim 1, wherein: the thickness of the natural graphite layer is 0.025-1 mm, the length is 200m, and the width is 520-1000 mm.
3. The single-sided graphene heat spreading film according to any one of claims 1-2, wherein: the viscosity of the PET double-sided silica gel film is 800-1500G.
4. The single-sided graphene heat spreading film according to any one of claims 1-2, wherein: the thickness of the PET double-sided silica gel film is 0.01-0.05 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020291976.XU CN212560079U (en) | 2020-03-11 | 2020-03-11 | Single-sided graphene heat dissipation film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020291976.XU CN212560079U (en) | 2020-03-11 | 2020-03-11 | Single-sided graphene heat dissipation film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212560079U true CN212560079U (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020291976.XU Expired - Fee Related CN212560079U (en) | 2020-03-11 | 2020-03-11 | Single-sided graphene heat dissipation film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212560079U (en) |
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2020
- 2020-03-11 CN CN202020291976.XU patent/CN212560079U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210219 |