A graphene-based pressure-sensitive electrothermal film
A technology of electric heating film and graphene, which is applied in the field of pressure-sensitive electric heating film, can solve few problems and achieve the effects of fast electric heating response, excellent performance and simple preparation process
Active Publication Date: 2018-04-20
杭州德烯科技集团有限公司
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Problems solved by technology
At present, there are few studies on the application of graphene three-dimensional materials in the field of electrothermal
Method used
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Embodiment 1
[0012] Embodiment 1: the density is 5mg / cm 3 , the graphene airgel with a pore size of 150 μm is placed in an inert atmosphere and subjected to high-temperature heat treatment according to the methods shown in Table 1 to Table 3. After natural cooling, a graphene-based high-efficiency pressure-sensitive electric heating film can be obtained, and then the electric heating film is heated. Both sides are coated with PDMS insulating layer to form an electrothermal film, and electrodes are respectively fixed on both ends of the electrothermal film, and the electrodes are connected to the graphene electrothermal film; the measured electrothermal effects are shown in Tables 1 to 3.
[0013] Table 1
[0014]
[0015] Table 2
[0016]
[0017] table 3
[0018]
[0019] It can be seen from Table 1 to Table 3 that the performance of the electrothermal film is mainly determined by two aspects. One is the repair of the graphene oxide sheet structure inside the material, that is,...
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Abstract
The invention discloses a pressure-sensitive electrothermal film based on graphene.The pressure-sensitive electrothermal film comprises a graphene electrothermal film and insulating protecting layers which coat the upper and lower sides of the efficient pressure-sensitive electrothermal film.A preparation method of the graphene electrothermal film includes: rising the temperature of graphene aerogel to 500-800 DEG C at the speed of 0.1-1 DEG C / minute, preserving the temperature for 0.5-2 hours, rising the temperature to 1000-1300 DEG C at the speed of 1-3 DEG C / minute, preserving the temperature for 0.5-3 hours, rising the temperature to 2000-3000 DEG C at the speed of 5-8 DEG C / minute, preserving the temperature for 0.5-4 hours, and naturally cooling to obtain the graphene electrothermal film, wherein the density of the graphene electrothermal film is 0.16-15mg / cm<3>, and the hole size of the graphene electrothermal film is 10-200 micrometers.The pressure-sensitive electrothermal film has the advantages that the electrothermal film can generate fast electrothermal response under different strains, the larger the stress is, the higher the electrothermal response saturation temperature is, and the highest temperature change range is 60-420 DEG C.The preparation method is simple in process, low in energy consumption and capable of achieving large-scale production, and the prepared graphene pressure-sensitive electrothermal film is excellent in performance.
Description
technical field [0001] The invention relates to a graphene-based pressure-sensitive electrothermal film. Background technique [0002] Graphene is a two-dimensional material with excellent performance. In 2004, Professors Andre Jim and Konstantin Novoselov of the University of Manchester were awarded the 2010 Nobel Prize in Physics for their creative discovery of graphene two-dimensional materials. Award, since then created a worldwide research upsurge in graphene materials. Graphene is currently the most ideal two-dimensional nanomaterial, with ultra-high specific surface area and excellent electrical and thermal conductivity. Graphene macroscopic film materials are often used in macroscopic electrothermal materials, and are used for deicing and defogging of transparent and flexible electrothermal films. Compared with commercial electrothermal materials, graphene materials have the advantages of light weight, simple preparation process, and flexibility. It is often used ...
Claims
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IPC IPC(8): C04B35/52
CPCC04B35/522C04B2235/5436
Inventor 高超王冉刘英军赵晓莉
Owner 杭州德烯科技集团有限公司