Electrothermal painting and preparation method thereof

A technology of electrothermal painting and electrodes, which is applied in the field of manufacturing structure of new graphene heating element materials, and can solve problems such as poor reliability, hidden safety hazards, and small square resistance

Active Publication Date: 2020-09-01
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

However, both commercial artificial graphite heat-conducting films and graphene heat-conducting films have the problems of too small square resistance (square resistance <1ohm/sq), and easy damage during the die-cutting process.
The square resistance is too small, so that the heating element can only be d

Method used

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  • Electrothermal painting and preparation method thereof
  • Electrothermal painting and preparation method thereof
  • Electrothermal painting and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0132] 1. Preparation of graphene hybrid film

[0133] 1. Prepare raw materials according to the following weight (×100g)

[0134]

[0135] Wherein, dispersant is sodium dodecyl sulfate (SDS); Solvent is water;

[0136] 2. Preparation of heating element slurry

[0137] Add graphene oxide powder, single-wall carbon nanotubes, and dispersant to the solvent, stir and mix evenly, and prepare a heating element slurry. The viscosity of the heating element slurry is 5000cPs (usually 500~20000cPs, preferably 2000~8000cPs );

[0138] 3. Preparation of graphene-carbon nanotube composite film

[0139] Pass the heating element slurry through a roll coater for wet coating, and coat the heating element slurry on the substrate PET release film, wherein the coating thickness is controlled to be 100 μm (usually 10 to 1000 μm, preferably 50 ~ 200μm); then the coated film is dried in a tunnel drying oven, and the heating element slurry is cured on the surface of the substrate to obtain a ...

Embodiment 1A

[0180] 1. Preparation of graphene hybrid film

[0181] Same as Example 1

[0182] 2. Preparation of graphene heating element

[0183] 1. Preparation of graphene hybrid composite film

[0184] Same as Example 1

[0185] 2. Patterning

[0186] Same as Example 1

[0187] 3. The first heat treatment

[0188] In addition to bonding multiple (13, usually ≥ 3, preferably 5-15) patterned graphene composite films on the surface of the heating element substrate epoxy resin plate, and the patterned graphene composite films are parallel to each other , at a distance of 5mm from each other (usually patterned graphene composite film 2-10mm), forming a patterned graphene composite film group, such as Figure 1A , all the other are identical with embodiment 1.

[0189] 4. Printed current-carrying electrode treatment

[0190] In addition to printing silver paste at both ends of the patterned graphene composite film group composed of a plurality of parallel patterned graphene composite ...

Embodiment 2

[0196] 1. Preparation of graphene hybrid film

[0197] 1. Prepare raw materials according to the following weight (×100g)

[0198]

[0199] Wherein, the dispersant is polyvinyl alcohol (PVA); the solvent is N-methylpyrrolidone (NMP);

[0200] 2. Preparation of heating element slurry

[0201] Except that the viscosity of the prepared heating element slurry is 8000cPs (usually 500-20000cPs, preferably 2000-8000cPs), the rest is the same as in Example 1;

[0202] 3. Preparation of graphene-carbon nanotube composite film

[0203] In addition to coating the heating element slurry on the PET release film; the coating thickness is 200 μm (usually 10-1000 μm, preferably 50-200 μm); the drying temperature is 180°C (usually 90-180°C); drying time Except for 20min (usually 20~30min), all the other are identical with embodiment 1;

[0204] 4. Thermal reduction treatment

[0205] Except that the thermal reduction temperature is 600°C (usually 500-1000°C); the heating rate of the th...

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Abstract

The invention discloses an electrothermal painting and a preparation method thereof. The method comprises the steps that a graphene hybrid film is attached to the surface of an insulating substrate and then subjected to first hot-pressing treatment; then current-carrying electrodes are printed at the opposite ends of the graphene hybrid film; then the other side of the graphene hybrid film is attached to the insulating substrate and subjected to second hot-pressing treatment, and thus a graphene hybrid heating body is prepared; and finally a decorative painting, the graphene hybrid heating body and a heat insulation plate are assembled in the order from the surface to the inside by adopting a metal frame, every two adjacent layers are arranged in a spaced mode, and thus the electrothermalpainting is obtained. The graphene hybrid film in the electrothermal painting has high heat resistance and heat conductivity, the square resistance and flexibility of the graphene hybrid film can be regulated and controlled, the service life of the prepared electrothermal painting is significantly prolonged, and the electric-heat conversion efficiency of the electrothermal painting is significantly improved and reaches 72% or above; and the energy-saving and heating effects of the electrothermal painting are obviously improved, the far-infrared radiation efficiency of the electrified preparedheating painting is high, and the needs of far-infrared physiotherapy are met.

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 paintings, and specifically relates to a manufacturing structure and method using a new graphene heating element material. 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, electric heating painting (heating painting) is a product with great market prospects, because it organically combines heating with home inter...

Claims

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Application Information

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IPC IPC(8): F24D13/02F24D19/06B44C5/02
CPCF24D13/02F24D19/062B44C5/02
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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