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A kind of graphene constant temperature electric heating film and preparation method thereof

A graphene and electric heating film technology, applied in electric heating devices, ohmic resistance heating, electrical components, etc., can solve the problems of unstable nanostructure, unsatisfactory physical and chemical properties, uneven heating, etc., and achieves less raw material consumption and simple structure. , the effect of small specific gravity

Active Publication Date: 2021-05-25
长沙暖宇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a circuit wound with metal wire or carbon fiber is used as a heating element, it usually has the defect of uneven heating, and it cannot be used after partial damage, and there will be safety hazards
However, the electrothermal film coated with conductive ink made of traditional graphene, carbon nanotubes, conductive carbon black and other materials as conductive fillers, although these nano-carbon materials have good conductivity in theory, but in the actual application process , due to the instability of its nanostructure, its various physical and chemical properties are not ideal
[0004] In addition, once the existing electric heating film is made, its resistance (power) is fixed, and it usually requires manual operation to control the circuit on and off, which is troublesome. At present, there are some improved products that realize intelligent adjustment by setting temperature sensors and other devices. But the structure is relatively complex

Method used

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  • A kind of graphene constant temperature electric heating film and preparation method thereof
  • A kind of graphene constant temperature electric heating film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 1) Submerge the cleaned copper sheet in a mixture of 200mL sodium hydroxide solution (10mol / L) and 100mL ammonia water (25%), let it stand for 12h, then wash it several times with deionized water and absolute ethanol respectively, Dry in air to get Cu / Cu(OH) 2 Nanorod arrays, and then calcined at 550°C for 2h in an argon atmosphere to obtain Cu / CuO nanorod arrays;

[0056] II) Mix and dissolve 8g of sodium hydroxide and 8g of glucose in 80mL of water, add the composite material obtained in step I) to it, conduct a microwave hydrothermal reaction at 160°C for 1h, take out the solid after cooling to room temperature, and use deionized water and dry Washed several times with water and ethanol respectively, and dried at 60°C to obtain Cu sheet-loaded Cu nanorod arrays;

[0057] III) Put the material obtained in step II) into a CVD tube furnace. Under the mixed atmosphere of hydrogen gas (flow rate of 20 sccm) and argon gas (flow rate of 800 sccm), the temperature of the tu...

Embodiment 2

[0060] Accurately weigh 1g of graphene prepared in Example 1, 30g of n-eicosane, 10g of polyurethane resin, 56g of DMF, 1g of HT-5027, 1g of SN-612, 1g of T-7511, mix them and vigorously stir for 2 hours to fully dissolve the solids Or disperse to obtain mixed slurry, apply the slurry to the surface of PVC film by coating process, set the coating thickness to 120 μm, and dry it at 120°C to obtain a conductive composite film with a thickness of about 30 μm. Two conductive copper tapes are pasted in parallel on both ends of the film as electrodes, and then a layer of polyurethane film is pasted on its surface, the PVC film on the other side is removed, and a layer of polyurethane film is also pasted on this surface, that is, obtained from constant temperature graphene Electric heating film.

Embodiment 3

[0062] Accurately weigh 0.5g of graphene prepared in Example 1, 40g of tetracosane, 5g of epoxy resin, 51.5g of triethylamine, 1gHT-5027, 1g of SN-612, 1g of T-7511, mix it and vigorously Stir for 2 hours to fully dissolve or disperse the solids to obtain a mixed slurry. Apply the slurry to the surface of the PTFE membrane using a coating process. The coating thickness is set to 160 μm and dried at 130°C to obtain a thickness of about For a 40μm conductive composite film, two conductive copper tapes are pasted in parallel on both ends of the film as electrodes, and then a layer of polyurethane film is pasted on its surface, the PVC film on the other side is removed, and a layer of polyurethane film is also pasted on this side , that is obtained from the constant temperature graphene electrothermal film.

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Abstract

The invention provides a graphene constant temperature electrothermal film and a preparation method thereof. At room temperature, graphene, alkanes, resins, organic solvents, and additives are fully stirred to form a mixed slurry, and the slurry is coated on the substrate. On the surface of the film, after drying, set conductive electrodes at both ends of the film, remove the base film and cover the insulating film to obtain a graphene constant temperature electrothermal film. The graphene constant temperature electrothermal film prepared by the present invention has better electrical and thermal conductivity than the prior art due to the addition of graphene materials with a special structure, and can realize self-constant temperature in the low temperature range without introducing other temperature control devices ( Normal temperature PTC thermal control effect). Based on the excellent electrothermal performance and far-infrared radiation effect of the invention, the invention has broad application prospects in the field of heat preservation and health care products.

Description

technical field [0001] The invention relates to the technical field of electrothermal materials, in particular to a graphene constant temperature electrothermal film and a preparation method thereof. Background technique [0002] The electrothermal film heating system is different from the point heating system represented by radiators, air conditioners, and radiators and the line heating system represented by heating electric heating. It is a low-carbon heating developed by modern aerospace technology in the field of surface heating. high-tech products. Electric heating film is a kind of translucent polyester film that can generate heat after being energized. It adopts the surface heating method, and most of the heat is emitted in the form of radiation. In recent years, it has been widely favored by users. [0003] Due to the different conductive components used in the existing electrothermal film, its electrothermal performance will also be different. For example, a circ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/14H05B3/34
CPCH05B3/145H05B3/34
Inventor 杜涛李思幸贺盼盼其他发明人请求不公开姓名
Owner 长沙暖宇新材料科技有限公司
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