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Graphene silver nanowire composite flexible heat-emitting film assembly

A technology of silver nanowire and heating film, which is applied in the direction of heating element materials, electric heating devices, electrical components, etc., can solve the problems of non-antibacterial, etc., and achieve the effects of good heating stability, stable surface temperature, and good flexibility

Active Publication Date: 2018-01-26
合肥微晶材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Neither the traditional heating film nor the emerging graphene-based electric heating film currently has antibacterial function.

Method used

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  • Graphene silver nanowire composite flexible heat-emitting film assembly
  • Graphene silver nanowire composite flexible heat-emitting film assembly
  • Graphene silver nanowire composite flexible heat-emitting film assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] The present embodiment is used to prepare the graphene-silver nanowire composite flexible heating film, and the raw materials used are as follows:

[0072] Graphene powder: particle size is 4-5μm, from Hefei Microcrystalline Materials Technology Co., Ltd., available in the market;

[0073] Silver nanowire dispersion: the concentration is 5mg / mL, which is from Hefei Microcrystalline Materials Technology Co., Ltd. and can be purchased in the market. The diameter of the silver nanowires contained in it is 60-70nm and the length is 30-40μm;

[0074] Conductive carbon black: particle size is 9-17nm, Tianjin Yiborui Chemical Co., Ltd., brand F900A;

[0075] Waterborne polyurethane resin: 50% solid content, Dongguan Mirenzhan Chemical Co., Ltd., grade MR-709;

[0076] Water-based epoxy resin: 50% solid content, Guangdong Shunde Dadiyuan New Material Co., Ltd., brand DRDSE560;

[0077] Water-based acrylic resin: 50% solid content, Guangdong Shunde Dadiyuan New Material Co., L...

Embodiment 2

[0096] The electrode material of the present invention can take different forms, such as metal foil, conductive cloth, conductive tape and conductive paste, etc. The different forms of electrodes will also have an impact on the heating film assembly, as follows:

[0097] When using the interdigital electrode in the form of conductive silver paste, it is processed as follows: first, the electrode pattern is drawn through cad, and then a screen printing plate is made, and the electrode area needs to be hollowed out and alignment marks are made; The graphene-silver nanowire composite flexible heating film is cut into the desired size and shape; the conductive silver paste is screen printed on the graphene-silver nanowire composite flexible heating film, and then cured at 150 ° C for 1 hour to form an electrode layer (The actual picture is as Image 6 shown); riveted the conductive wire on the electrode of the heating film by the end punching machine (the actual picture is shown i...

Embodiment 3

[0104] When the electrode layer is an interdigitated electrode structure, if the distance between the extension terminal of the current collector bar and another current collector bar is too small, local hot spots will occur, and if the distance is too large, the excessively large area will not generate heat, thus affecting the heating performance. Therefore, the present invention solves this problem by arranging the form of a through hole between the extension terminal of the current collecting bar and another current collecting bar. like Figure 8 As shown, A is the infrared image of the heating film with unprocessed through-holes under 5V voltage, and B is the infrared image of the heating film with processed through-holes under 5V voltage. After testing, the resistances of the two are basically the same. It can be seen that a local hot spot is generated between the extension terminal of the collector strip and another collector strip in Figure A, while there is no hot spot...

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Abstract

The invention discloses a graphene silver nanowire composite flexible heat-emitting film assembly. The assembly comprises a graphene silver nanowire composite flexible heat-emitting film; an electrodelayer is arranged on the graphene silver nanowire composite flexible heat-emitting film; the electrode layer is electrically connected with the graphene silver nanowire composite flexible heat-emitting film; and an insulating waterproof protective layer is arranged on the electrode layer, or insulating waterproof protective layers are arranged on both the electrode layer and one surface of the graphene silver nanowire composite flexible heat-emitting film which is not provided with the electrode layer. The flexible heat-emitting film assembly of the invention has the advantages of uniform heat emission, good heat stability, high flexibility, antibacterial performance and foldability. With the flexible heat-emitting film assembly adopted, the sizes of products can be customized according to actual needs.

Description

technical field [0001] The invention belongs to the field of carbon materials, in particular to a graphene nano-silver wire composite flexible foldable heating chip. Background technique [0002] Electric heating technology has the advantages of clean energy and high heat conversion efficiency, and is widely used in modern buildings, heating engineering, decoration and other fields. [0003] The electric heating elements in the traditional electric heating system are often made of metal foil, film coating, resistance wire and other materials. These materials have poor electric heating effect and low efficiency. Therefore, the development of carbon-based heating materials with high thermal conductivity and high heat resistance stability is becoming a inevitable trend in the future. [0004] Since graphene was first prepared by British scientists in 2004, the excellent properties of graphene have attracted extensive attention of many scholars. Graphene has excellent electric...

Claims

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Application Information

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IPC IPC(8): H05B3/14H05B3/34A61N5/06
CPCH05B2203/006H05B3/20
Inventor 张梓晗吕鹏张运奇
Owner 合肥微晶材料科技有限公司
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