Graphene electrothermal film for floor heating

A graphene and electric heating film technology, applied in electric heating devices, ohmic resistance heating, applications, etc., can solve the problems of easy ignition and automatic connection of floor heating electric heating film, and achieve strong adhesion, good electrical connection performance, and anti-peeling performance. strong effect

Pending Publication Date: 2020-09-25
安徽宇航派蒙健康科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a graphene electrothermal film for floor heating in view of the existing floor heating electrothermal film that is easy to catch fire during use, and there are safety hazards that are prone to fire, as well as the technical problems of automatic connection in the preparation process. The heating element of the invented graphene electrothermal film for floor heating is in good contact with the bridging electrodes and copper electrodes, and the bridging electrodes completely cover the copper electrodes, which effectively solves the risk of fire caused by ignition at the edge of the heating element; in addition, the present invention is more conducive to realizing The whole process of automatic production eliminates the problem that in the traditional production process, abnormalities are prone to occur in the copper electrode composite process, which leads to the failure to automatically connect with the front-end process (traditional production, automatic production can be realized in the printing of graphene heating film and silver electrode printing, During the compounding process of copper electrodes, since it is easy to produce abnormalities when bonding with silver electrodes, it is generally produced independently to prevent waste of materials and losses)

Method used

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  • Graphene electrothermal film for floor heating
  • Graphene electrothermal film for floor heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] 1. Coarsening treatment

[0087] Put the roll-type copper foil (strip) to be treated into the wet etching equipment, adopt the roll-to-roll micro-etching process, and use the micro-etching solution to micro-etch the copper foil, that is, immerse the copper foil (strip) in the micro-etching solution, and the copper The foil (strip) is subjected to micro-etching treatment, the copper foil (strip) passes through the micro-etching solution at a constant speed, the surface of the copper foil (strip) is corroded by the micro-etching solution, and the copper foil (strip) is under the action of a strong oxidant to form copper oxide, which is then combined with Acid reaction, resulting in etching, the total chemical equation is: H 2 o 2 +Cu+H 2 SO 4 →CuSO 4 +2H 2 O, where:

[0088] The surface of the bridging silver paste electrode and the copper current-carrying electrode in the floor heating electrothermal film prepared by the method of the present invention is fully cov...

Embodiment 2

[0110] 1. Coarsening treatment

[0111] In addition to the microetching solution, the hydrogen peroxide-sulfuric acid system is used, in which the total concentration of hydrogen peroxide and sulfuric acid is 105g / L, the concentration ratio of hydrogen peroxide and sulfuric acid is: 1:2.5, the concentration of hydrogen peroxide is 30g / L, the concentration of sulfuric acid is 75g / L, and the reaction temperature is 25°C, the moving speed of the copper foil is 3m / min, the etching time is 100s, and the surface roughness Ra of the roughened copper foil is 2.5±0.5μm, the rest is the same as that of the embodiment 1.

[0112] 2. Implantation of copper electrodes

[0113] Except that the first adhesive is epoxy resin adhesive, the baking temperature is 100°C (usually 50-200°C, preferably 50-140°C); bake for 5 minutes (usually 1-20min); 2 symmetrically placed The roughened copper foil (strip) is 1.5cm away from the edge of the PET film of the first insulating substrate; the distance b...

Embodiment 3

[0122] 1. Coarsening treatment

[0123] In addition to the microetching solution, the hydrogen peroxide-sulfuric acid system is selected, in which the total concentration of hydrogen peroxide and sulfuric acid is 135g / L, the concentration ratio of hydrogen peroxide and sulfuric acid is: 1:3.5, the concentration of hydrogen peroxide is 30g / L, the concentration of sulfuric acid is 105g / L, and the reaction temperature is 30 °C, the moving speed of the copper foil (strip) is 2.5m / min, the etching time is 100s, and the roughness Ra of the surface of the roughened copper foil is 3.5±0.5μm, the rest are the same as in Example 1.

[0124] 2. Implantation of copper electrodes

[0125] Except that the first adhesive is an acrylic resin adhesive; the baking temperature in the oven is 80°C (usually 50-200°C, preferably 50-140°C); bake for 10min (usually 1-20min); symmetrical The distance between the two roughened copper foils (bars) placed is 0.5cm from the edge of the PET film of the fi...

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Abstract

The invention discloses a graphene electrothermal film for floor heating, which is prepared according to the following steps: coating a graphene heating film on the surface of an insulating substrateof the electrothermal film, and implanting copper electrodes into two opposite sides of the graphene heating film; printing bridging electrodes on the surfaces of the graphene heating film and the copper electrode; and then covering and packaging the second insulating substrate to form the flexible circuit board. The heating body of the graphene electrothermal film for floor heating is in good contact with the bridging electrode and the copper electrode. The bridging electrode completely coats the copper electrode. The contact resistance between the bridging electrode and the surface of the copper current-carrying electrode is obviously reduced. The graphene electrothermal film has the advantages that the the peeling resistance is improved, the risk of fire caused by edge sparking of the heating body is effectively solved, the energy utilization rate is increased, the whole-process automatic production is more favorably realized, and the problem that the copper electrode compounding process is easy to be abnormal and cannot be automatically connected with the front-end process in the traditional production process is completely eradicated.

Description

technical field [0001] The invention belongs to the field of electric heating product manufacturing, and relates to the application of new graphene materials in the field of electric heating films, in particular to a method for using new graphene materials to manufacture floor heating electric heating films with dual functions of heating and far-infrared health care. Background technique [0002] In recent years, electric heating technology and market have developed rapidly, especially with the support of the national coal-to-electricity policy in the north, more and more electric heating equipment has entered ordinary households, meeting the safe and efficient heating needs of northern families in the heating season, and also It provides important product and technical support for the continuous improvement of air quality in major northern cities. [0003] Among all electric heating products, floor heating electric heating film is a product with great market prospects, beca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/18B32B3/08B32B7/025B32B7/12B32B27/08B32B27/36B32B33/00B32B37/06B32B37/10B32B37/12B32B38/00B32B38/18H05B3/36
CPCH05B3/18H05B3/36B32B3/085B32B27/36B32B27/08B32B33/00B32B7/12B32B7/025B32B37/1284B32B37/06B32B37/10B32B38/164B32B38/1816H05B2203/017B32B2255/10B32B2255/20B32B2307/302B32B2307/202B32B2457/00
Inventor 谭化兵潘智军
Owner 安徽宇航派蒙健康科技股份有限公司
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