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Graphene heating film and preparation method thereof

A graphene heating film and graphene technology, applied in the field of graphene heating film and its preparation, to achieve the effects of excellent insulation performance, fast heating rate, and satisfying use requirements

Active Publication Date: 2019-06-11
合肥市海洲新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a graphene heating film and its preparation method, which has the advantages of good heat resistance, high power density heating, excellent insulation performance and fast heating rate, and solves the problems mentioned in the above background technology. question

Method used

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  • Graphene heating film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A graphene heating film and preparation method thereof, comprising an insulating layer 1, a film-forming substrate 2 and a graphene heating core 3, the insulating layer 1 is wrapped on the surfaces of the film-forming substrate 2 and the graphene heating core 3, and the film is formed The bottom of the substrate 2 is provided with a PI film 5, and the two sides of the PI film 5 are in contact with the graphene heating core 3 and the insulating layer 1 respectively.

[0041] The present invention also provides a method for preparing a graphene heating film, comprising the following steps:

[0042] Step 1: Etch the copper-clad PI film 5, etch for 5 minutes in the erosive state of the etching solution, and the etching temperature is 15 degrees Celsius to form a conductive line 4, and one end of the conductive line 4 forms a lead joint, and the lead joints are respectively connected The positive and negative poles of the power supply, and then deposit a metal layer to obtain ...

Embodiment 2

[0056] Embodiment two: the difference between this embodiment and embodiment one is:

[0057] A graphene heating film and preparation method thereof, comprising an insulating layer 1, a film-forming substrate 2 and a graphene heating core 3, the insulating layer 1 is wrapped on the surfaces of the film-forming substrate 2 and the graphene heating core 3, and the film is formed The bottom of the substrate 2 is provided with a PI film 5, and the two sides of the PI film 5 are in contact with the graphene heating core 3 and the insulating layer 1 respectively.

[0058] The present invention also provides a method for preparing a graphene heating film, comprising the following steps:

[0059] Step 1: Etching the copper-clad PI film 5, and etching it for 8 minutes in the erosive state of the etching solution, at an etching temperature of 18 degrees Celsius, to form a conductive line 4, one end of the conductive line 4 forms a lead joint, and the lead joints are respectively connect...

Embodiment 3

[0073] Embodiment three: the difference between this embodiment and embodiment one and embodiment two is:

[0074] A graphene heating film and preparation method thereof, comprising an insulating layer 1, a film-forming substrate 2 and a graphene heating core 3, the insulating layer 1 is wrapped on the surfaces of the film-forming substrate 2 and the graphene heating core 3, and the film is formed The bottom of the substrate 2 is provided with a PI film 5, and the two sides of the PI film 5 are in contact with the graphene heating core 3 and the insulating layer 1 respectively.

[0075] The present invention also provides a method for preparing a graphene heating film, comprising the following steps:

[0076] Step 1: Etching the copper-clad PI film 5, etching it for 10 minutes in the erosive state of the etching solution, and the etching temperature is 20 degrees Celsius, to form a conductive line 4, and one end of the conductive line 4 forms a lead joint, and the lead joints ...

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Abstract

The invention discloses a graphene heating film and a preparation method thereof. The graphene heating film comprises an insulating layer, a film-forming base material and a graphene heating core, wherein the insulating layer wraps the surface of the film-forming base material and the surface of the graphene heating core; a PI film is arranged at the bottom of the film-forming base material; and the two sides of the PI film are in contact with the graphene heating core and the insulating layer respectively. The graphene heating film provided by the invention has extremely high temperature resistance, can realize high-power density heating and has excellent insulating property and high heating rate; the experiment result shows that the temperature-resistant temperature of the graphene heating film provided by the invention is larger than 250 DEG C, so that the insulativity is extremely high; after power on at 2500VAC for 1min, the electric leakage current is less than or equal to 2 milliamperes, and the insulation resistance is larger than or equal to 500 M<omega>; and the power density can reach 0.40-0.80W / cm2 at the low voltage of 3-32v, so that the requirement of heating rate of0.5-1.0 DEG C / min of an electric battery can be met, and the graphene heating film is worthy of popularization and use.

Description

technical field [0001] The invention relates to the technical field of electric heating materials, in particular to a graphene heating film and a preparation method thereof. Background technique [0002] With the continuous emergence of new technologies in the electric heating industry, in the lithium battery industry that is widely used at present, the traditional resistance wire heating method can no longer meet the requirements of power battery temperature uniformity due to low electrothermal efficiency and extremely uneven temperature. A new type of resin-based heating film based on conductive fillers such as alkene appeared, and its surface heating characteristics can significantly improve temperature uniformity. It overcomes the weakness of traditional PTC heating plates that are bulky and resistance wire heating film products have poor temperature uniformity. The market favors. [0003] With the increase of customer experience feedback and the diversification of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/14H05B3/34
Inventor 朱传佳
Owner 合肥市海洲新材料科技有限公司