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A low-radiation transparent electric heating film and its preparation method

A transparent conductive film and low-radiation technology, which is applied in the field of energy-saving and conductive materials, can solve the problems of difficult realization of large-area preparation and restrictions on promotion, and achieve the effects of strong reflection, weakened heat exchange, and low-radiation performance

Active Publication Date: 2019-02-19
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, methods such as spin coating and physical deposition adopted in the disclosed method of CN103227240A are not easy to realize large-area preparation, which restricts the promotion of this method

Method used

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  • A low-radiation transparent electric heating film and its preparation method
  • A low-radiation transparent electric heating film and its preparation method
  • A low-radiation transparent electric heating film and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1, low radiation electric heating film based on ITO thin film and Cu grid composite structure

[0057] 1. Selection of low-radiation conductive functional layer

[0058] In this embodiment, a PET / ITO conductive film with a surface resistance of 7Ω / □ is selected as the substrate, and the substrate has a strong reflection ability to infrared light.

[0059] 2. Preparation of cracked mesh template by scraping method

[0060] In this embodiment, the cracked nail polish glue that does not react with the electrolyte is selected as the raw material for the cracked stencil, and the specific preparation process of the cracked stencil is as follows:

[0061] (1) Cut the conductive substrate into a suitable size and fix it on the working panel of the scraping machine;

[0062] (2) Select a wire rod with a specification of 7 μm, fix the wire rod in the leveling groove, and put down the lifting handle to ensure that the wire rod is completely attached to the conductive ...

Embodiment 2

[0081] Example 2, low-radiation electric heating film based on AZO / Ag / Au grid / AZO composite structure

[0082] 1. Preparation of low-emissivity functional layer

[0083] In this embodiment, the AZO / Ag low-emissivity conductive film is selected as the low-emissivity layer. Its specific preparation method is as follows:

[0084] (1) Aluminum oxide (Al 2 o 3 ) and zinc oxide (ZnO) mixed powder (molar ratio Al 2 o 3 : ZnO=2:98) is fully ground, pressed into a target, and then sintered at a high temperature of 950° C. for 4 hours to obtain a target. Use a molecular pump to evacuate the growth chamber below 10 -6 Torr, followed by argon gas, so that the pressure in the growth chamber was 5×10 -3 Torr. The quartz substrate (1mm thick) is placed on the tray, the temperature is kept at room temperature, and rotated at a rate of 15rpm; when the sample is grown by magnetron sputtering, the power is controlled at 80W. The growth rate is 2.35nm / min, and the AZO thickness is 40nm b...

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Abstract

The invention discloses a low-radiation transparent electric heating film and a preparation method thereof. The preparation method comprises the following steps that (1) a cracking template is prepared on a conducting substrate; (2) metal is deposited in cracks of the cracking template through an electroplating method; and (3) the cracking template is removed, a compound structure of the conducting substrate and a metal grid is obtained, and the compound structure is the low-radiation transparent electric heating film. The low-radiation transparent electric heating film has the low-radiation performance and has a good light transmission property within the visible light wavelength range. The low-radiation transparent electric heating film has ultrahigh electrical conductivity, and can achieve a high steady temperature and a high heating rate only by providing a quite low heating voltage, for example, as for the prepared low-radiation transparent electric heating film in the second embodiment of the invention, under the condition that a bias voltage of 5V is provided, the heating rate is up to 7.7 DEG C / s and the highest temperature is up to 100 DEG C or above.

Description

technical field [0001] The invention relates to a low-radiation transparent electric heating film and a preparation method thereof, belonging to the field of energy-saving and conductive materials. Background technique [0002] With the gradual implementation of the national energy strategy, the application of low-emissivity energy-saving glass in the building field is rapidly increasing. Its main features are its high infrared reflectivity and low convective heat transfer coefficient, which can effectively reduce indoor and outdoor heat radiation. Transmission, reduce building energy consumption, to achieve the purpose of energy saving and emission reduction. Transparent heating film can be widely used in outdoor display, vehicle or aircraft windshield defrosting, indoor window heating, etc. Its working principle is to generate Joule heat when current flows through the transparent conductive film to achieve the heating effect, the most important The performance parameters ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D7/00H05B3/84
CPCC25D7/00H05B3/84H05B2203/013H05B2203/017H05B2214/02
Inventor 马剑钢徐海阳薛小丹李鹏李化鹏
Owner NORTHEAST NORMAL UNIVERSITY
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