A graphene silver nanowire composite flexible heating film assembly

A silver nanowire and heat-generating film technology, which is applied in the field of graphene nano-silver wire composite flexible foldable heat-generating chips, can solve the problems of non-antibacterial and other problems, and achieve good heating stability, high safety factor, and precise control of heating temperature Effect

Active Publication Date: 2020-11-06
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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  • A graphene silver nanowire composite flexible heating film assembly
  • A graphene silver nanowire composite flexible heating film assembly
  • A graphene silver nanowire composite flexible heating film assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

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

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

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

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

[0077] Water-based acrylic resin: 50% solid content, Guangdong Shunde Dajiyuan New Material Co., Ltd., brand DRDS050;

[0...

Embodiment 2

[0096] The electrode material of the present invention can adopt 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 the interdigitated electrodes in the form of conductive silver paste are used, the processing is as follows: first draw the electrode pattern through cad, and then make a screen printing plate, hollow out the electrode area, and make alignment marks; as required, Cut the graphene silver nanowire composite flexible heating film into the required size and shape; screen-print conductive silver paste on the graphene silver nanowire composite flexible heating film, and then cure it at 150°C for 1 hour to form an electrode layer (The actual picture is as Figure 6 as shown); Rivet the conductive wire on the electrode of the heating film through the end machine (the actual picture is shown in Figure 7 shown) ...

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 be generated, and if the distance is too large, the excessively large area will not generate heat, thus affecting the heat generation performance. Therefore, the present invention solves this problem by providing a through hole between the extension terminal of the collector bar and another collector bar. Such as Figure 8 As shown, A is the infrared image of the heat-generating film without through-holes heating at 5V, and B is the infrared image of the heat-generating film with through-holes heating at 5V. The resistance of the two is basically the same after testing. It can be seen that there is a local hot spot between the extension terminal of the collector bar in Figure A and another collector bar, but there is no hot spot in Figure B. Therefore, the arra...

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Abstract

The invention discloses a graphene silver nanowire composite flexible heating film assembly, which comprises a graphene silver nanowire composite flexible heating film, an electrode layer is arranged on the graphene silver nanowire composite flexible heating film, and the electrode layer and the graphene The silver nanowire composite flexible heating film is electrically connected; an insulating and waterproof protective layer is provided on the electrode layer, or an insulating and waterproof protective layer is provided on the electrode layer and on the side of the graphene silver nanowire composite flexible heating film that is not provided with an electrode layer . The flexible heating film module of the present invention has uniform heating, good heating stability, flexibility and antibacterial foldability, and the size of the product 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 architecture, heating engineering, decoration and other fields. [0003] The electric heating elements in the traditional electric heating system often use materials such as metal foil, film coating, and resistance wire. Such materials have poor electric heating effect and low efficiency. inevitable trend in the future. [0004] Since the first preparation of graphene by British scientists in 2004, the excellent properties of graphene have attracted the attention of many scholars. Graphene has excellent electrical conductivity, and the electron mobility is as high as 2×10 5 cm 2 v -1 the s -1 , which is twice as high as indium telluride, the current ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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