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Preparation method of graphene electrothermal materials with controllable electrothermal performance

An electrothermal material and graphene technology, applied in heating element materials, electrothermal devices, ohmic resistance heating, etc., can solve problems such as organic solvent pollution to the environment, and achieve the effect of achieving controllability and avoiding environmental pollution.

Inactive Publication Date: 2018-04-20
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for preparing a graphene electrothermal material with controllable electrothermal properties, which can not only avoid the problem of environmental pollution caused by organic solvents in the preparation process of graphene electrothermal materials, but also enable Graphene electrothermal materials have a variety of electrothermal properties, which can be adjusted according to different demand conditions, so that the controllability of electrothermal properties can be realized

Method used

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  • Preparation method of graphene electrothermal materials with controllable electrothermal performance
  • Preparation method of graphene electrothermal materials with controllable electrothermal performance

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preparation example Construction

[0021] A method for preparing a graphene electrothermal material with controllable electrothermal performance, comprising the steps of:

[0022] Step A, using graphene slurry as a conductive filler, using water-based polyurethane emulsion as a binder, and adding an emulsifier with a mass fraction of 3%, thereby preparing a graphene electric heating carbon slurry.

[0023] Step B, using polyethylene terephthalate PET film as a carrier, setting 2 to 20 wires on the PET film, and the distance between two adjacent wires is 0.1 to 50 cm, and then the graphite The graphene electrothermal carbon paste is coated on the wire and the PET film, and then dried (the drying temperature is preferably 120° C.), so as to obtain a graphene electrothermal material with controllable electrothermal properties.

Embodiment approach

[0025] (1) By applying a safety voltage to wires with different spacings on the graphene electrothermal material with controllable electrothermal performance, the surface temperature of the graphene electrothermal material with controllable electrothermal performance is changed to realize its controllable electrothermal performance. For example: for the graphene electrothermal material with controllable electrothermal properties prepared by graphene electrothermal carbon paste with a graphene slurry content of 80wt%, if three wires are arranged on the PET film, and the distance between two adjacent wires is The distance is 2cm, then when a 3.7v safety voltage is applied to two wires that are 2cm apart, the surface temperature of the graphene electrothermal material with controllable electrothermal performance is 75°C, and when 3.7v is applied to two wires that are 4cm apart At v safe voltage, the surface temperature of the graphene electrothermal material with controllable elec...

Embodiment 1

[0035] A method for preparing a graphene electrothermal material with controllable electrothermal properties, comprising:figure 1 The graphene slurry shown (the graphene slurry of Hongna New Material Technology Co., Ltd. can be used) is used as a conductive filler, and the water-based polyurethane emulsion (the water-based polyurethane emulsion of Shanghai Birong Chemical Co., Ltd. can be used) is used as a binder. And adding a mass fraction of 3% water-based emulsifier (the water-based emulsifier of Shanghai Zhongcheng Fine Chemical Co., Ltd. can be used), so as to obtain a graphene electrothermal carbon slurry with a graphene slurry content of 80wt%. With polyethylene terephthalate PET film as carrier, set 2 wires on PET film, and the distance between two adjacent wires is 2cm, then described graphene electrothermal carbon paste is coated on On the wire and the PET film, dry it at 120°C, so as to make the figure 2 Graphene electrocaloric material with controllable electroca...

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Abstract

The invention discloses a preparation method of graphene electrothermal materials with controllable electrothermal performance. The preparation method of graphene electrothermal materials with controllable electrothermal performance includes the following steps: taking grapheme slurry as conductive filling materials, taking aqueous polyurethane emulsion as binders and adding emulsifier to preparegraphene electrothermal carbon slurry, wherein the mass fraction of the emulsifier is 3%; and taking a PET film as a carrier, setting 2-20 wires on the PET film, setting the distance between every twoadjacent wires as 0.1-50cm, coating the PET film with the graphene electrothermal carbon slurry, and performing drying treatment so as to prepare the graphene electrothermal materials with controllable electrothermal performance. The preparation method of graphene electrothermal materials with controllable electrothermal performance can avoid the problem that organic solvent may pollute environment during the preparation process of the graphene electrothermal materials, enables the graphene electrothermal materials to have various electrothermal performance, can perform adjustment according to different demands so as to realize controllability of the electrothermal performance.

Description

technical field [0001] The invention relates to the field of low-voltage electrothermal materials, in particular to a preparation method of a graphene electrothermal material with controllable electrothermal performance. Background technique [0002] Graphene is a honeycomb planar film formed by carbon atoms. It is a two-dimensional material with only one atomic layer thickness, so it is also commonly called monoatomic layer graphite. The common preparation methods of graphene include mechanical exfoliation method, redox method, SiC epitaxial growth method and chemical vapor deposition method. Because graphene has very good properties such as strength, flexibility, electrical conductivity, thermal conductivity, and optics, it has broad application prospects in the fields of physics, materials science, electronic information, computers, and aerospace. [0003] Graphene electrothermal materials mainly include conductive fillers, binders, solvents and other components. Compar...

Claims

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Application Information

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IPC IPC(8): H05B3/14
CPCH05B3/145
Inventor 刘太奇张旗
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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