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Preparation method of graphene electrothermal film for floor heating

A technology of graphene and electric heating film, which is applied in the field of floor heating electric heating film and its preparation, can solve the problems of easy ignition and waste of floor heating electric heating film, and achieve the effect of good electrical connection performance

Pending Publication Date: 2020-09-15
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 and its production method for the existing electric heating film for floor heating, which is easy to catch fire during use, has potential safety hazards that are prone to fire, and has technical problems of automatic connection in the preparation process. The preparation method, the heating element of the graphene electrothermal film for floor heating of the present invention is in good contact with the bridging electrode and the copper electrode, and the bridging electrode completely covers the copper electrode, which effectively solves the risk of fire caused by the edge of the heating element; in addition, the present invention It is more conducive to the realization of full-scale automatic production, and it eliminates the problem that in the traditional production process, abnormalities are prone to occur in the copper electrode compounding process, which leads to the inability to automatically connect with the front-end process (traditional production, in the printing of graphene heating film and printing of silver electrodes. Realize automatic production, in the process of copper electrode compounding, because it is easy to produce abnormalities when it is bonded with silver electrodes, it is generally produced independently to prevent waste of materials and losses)

Method used

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  • Preparation method of graphene electrothermal film for floor heating
  • Preparation method of graphene electrothermal film for floor heating
  • Preparation method of graphene electrothermal film for floor heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] 1. Coarsening treatment

[0080] 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:

[0081] The microetching solution is a hydrogen peroxide-sulfuric acid system (that is, a mixture of hydrogen peroxide and sulfuric acid). The sum of the concentration and the concentration of sulfuric...

Embodiment 2

[0105] 1. Coarsening treatment

[0106] 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.

[0107] 2. Implantation of copper electrodes

[0108] 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

[0117] 1. Coarsening treatment

[0118] 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.

[0119] 2. Implantation of copper electrodes

[0120] 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 preparation method of a graphene electrothermal film for floor heating, which comprises the steps of coating the surface of an insulating base material of the electrothermalfilm with a graphene heating film, implanting copper electrodes into two opposite sides of the graphene heating film, and arranging the graphene heating film and the copper electrodes at intervals; and printing a bridging electrode on the surfaces of the graphene heating film and the copper electrodes. A heating body of the graphene electrothermal film for floor heating prepared by the method is in good contact with the bridging electrode and the copper electrodes; the bridging electrode completely coats the copper electrodes; the contact resistance between the bridging electrode and the surface of the copper current-carrying electrode is obviously reduced; and the peeling resistance is improved, the risk of fire caused by edge sparking of the heating body is effectively solved, and the energy utilization rate is increased. In addition, the whole-process automatic production is more favorably realized, and the problem that the copper electrode compounding process is easy to be abnormaland 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, relates to the application of new graphene materials in the field of electric heating films, and specifically relates to the use of new graphene materials to manufacture floor heating electric heating films with dual functions of heating and far-infrared health care and a preparation method thereof. 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 w...

Claims

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Application Information

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IPC IPC(8): H05B3/14H05B3/18H05B3/20F24D13/02
CPCH05B3/14H05B3/18H05B3/20F24D13/024
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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