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Flexible graphene heating film and preparation method thereof

An ene heating film and flexible graphite technology, applied in the field of nanomaterials, can solve the problems of difficult to guarantee heating uniformity, poor high-voltage breakdown force, service life discount, etc., to achieve excellent electronic conduction performance, stable heating resistance, and extended use. effect of life

Active Publication Date: 2020-07-24
FOSHAN SHUNDE SANBEI ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a flexible graphene heating film and a preparation method thereof, to solve the problem of difficulty in ensuring the uniformity of heating and the adhesion between the graphene heating coating and the carrier or intermediate layer in the existing heating film. Defects such as poor effect, easy aging and deterioration, and "brittleness" caused by long-term use. In addition, the protective layer is only laid on the surface of the graphene layer, which has poor peeling resistance, poor high-voltage breakdown resistance, and greatly reduced service life.

Method used

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  • Flexible graphene heating film and preparation method thereof
  • Flexible graphene heating film and preparation method thereof
  • Flexible graphene heating film and preparation method thereof

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preparation example Construction

[0076] The preparation method of flexible graphene heating film of the present invention comprises the following steps:

[0077] Step 1: Provide a carrier and print graphene slurry on both ends of the carrier, continue to lay electrode strips on the graphene slurry, and after the graphene slurry solidifies, prepare the carrier and the graphene strips and electrodes connected to the carrier strip.

[0078] The second step: arrange palladium quantum dots doped graphene-based conductive ink on the carrier with graphene strips and electrode strips by scraping, spin coating, direct writing, screen printing or inkjet printing, and obtain graphene heating after curing coating;

[0079] The third step: the electrode connecting section and the electrode current-carrying bar are arranged at the two ends of the above-mentioned graphene heating coating, wherein, an electrode connecting section is respectively provided at the two ends of any graphene heating coating, in other embodiments,...

Embodiment 1

[0083] Preparation of graphene oxide acetone dispersion: 500 mg of graphite powder was provided, and graphene oxide (Graphene Oxide, GO) was prepared by a modified Hummers method. In order to further obtain few-layer graphene oxide, place graphene oxide in an ice-water bath, use an ultrasonic disperser to sonicate for 10 minutes at a power of 250W, repeat once, take the supernatant, centrifuge, and resuspend in acetone to obtain a thickness ranging from 12 to Graphene oxide acetone dispersion liquid with 20 layers and lateral dimension of 700-1000nm. Concentrate by centrifugation as required to adjust the concentration of the graphene oxide acetone dispersion to 150 mg / ml.

[0084] Preparation of palladium quantum dot-doped graphene dispersion: take 50ml of the graphene oxide acetone dispersion prepared above and add 0.05g of phosphomolybdic acid to it, stir at 600rpm for 10h, centrifuge at 15000rpm for 30min, and collect the first precipitate at the bottom of the centrifuge t...

Embodiment 2

[0090] Preparation of graphene oxide acetone dispersion: 500 mg of graphite powder was provided, and graphene oxide (Graphene Oxide, GO) was prepared by a modified Hummers method. The prepared graphene oxide was further transferred to a high-temperature carbonization furnace for high-temperature carbonization for 30 s. The high-temperature carbonization furnace was filled with nitrogen gas, and the temperature of the high-temperature carbonization furnace was 1200° C. In order to further obtain few-layer graphene oxide, place the graphene oxide expanded at high temperature in an ice-water bath, use an ultrasonic disperser to sonicate for 20 minutes at a power of 250W, repeat once, take the supernatant, centrifuge, and resuspend in acetone. A graphene oxide acetone dispersion liquid with a thickness ranging from 8 to 15 layers and a lateral dimension of 700 to 1000 nm. Concentrate by centrifugation as required to adjust the concentration of the graphene oxide acetone dispersion...

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Abstract

The invention provides a flexible graphene heating film. The film comprises a carrier and a plurality of graphene heating coatings which are coated on the carrier and arranged side by side. A polymerinsulating film is laminated on each graphene heating coating in a hot-pressing manner; electrode strips are arranged at bottoms of two ends of any graphene heating coating, the electrode strips are electrically connected with the graphene heating coatings, and graphene strips for preventing the electrode strips from making contact with the carrier are arranged between the electrode strips and thecarrier; the two ends of each graphene heating coating are also provided with electrode current-carrying strips; and each graphene heating coating is made of the palladium quantum dot doped graphene-based conductive ink. The flexible graphene heating film is prepared from the palladium quantum dot doped graphene-based conductive ink, and has advantages of uniform palladium quantum dot doping, a uniform quantum dot nanometer size, a small average particle size, a stable graphene oxide structure, a controllable graphene heating coating thickness, proper sheet resistance and the like. The invention also provides a preparation method of the flexible graphene heating film.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a flexible graphene heating film, and also relates to a preparation method of the flexible graphene heating film. Background technique [0002] Graphene is a two-dimensional nanomaterial with a hexagonal honeycomb lattice structure formed by carbon atoms through sp2 hybrid orbitals and only one layer of carbon atoms thick. The unique structure of graphene endows it with many excellent properties, such as high theoretical specific surface area (2630m 2 / g), ultra-high electron mobility (~200000cm 2 / v.s), high thermal conductivity (5000W / m.K), high Young's modulus (1.0TPa) and high light transmittance (~97.7%), etc. With its structure and performance advantages, graphene has great application prospects in energy storage and conversion devices, nanoelectronic devices, multifunctional sensors, flexible and wearable electronics, electromagnetic shielding, anti-corrosion and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/36
CPCH05B3/36
Inventor 吴立刚叶德林胡柱东彭令曾垂彬孔金波刘秋明马宇飞
Owner FOSHAN SHUNDE SANBEI ELECTRONICS CO LTD
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