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Preparation method of silver nanowire film heater resistant to repeated scraping

A thin film heater and silver nanowire technology, which is applied in the direction of ohmic resistance heating, heating element materials, electric heating devices, etc., can solve the problems of scratch resistance, etc., and achieve the effect of improving scratch resistance and wear resistance

Inactive Publication Date: 2020-09-22
NANJING SILVERNANO NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: Aiming at the above-mentioned prior art, a method for preparing a silver nanowire film heater resistant to repeated scratches is proposed to solve the problem of non-scratch resistance

Method used

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  • Preparation method of silver nanowire film heater resistant to repeated scraping
  • Preparation method of silver nanowire film heater resistant to repeated scraping
  • Preparation method of silver nanowire film heater resistant to repeated scraping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing a silver nanowire film heater resistant to repeated scratches, comprising the steps of:

[0022] Step 1: Disperse the silver nanowires synthesized by the polyol method in an ethanol solution to obtain a silver nanowire colloid with a concentration of 2.5 mg / mL.

[0023] Step 2: Coating the silver nanowire colloid on the high-temperature-resistant substrate by scraping, spraying, spin coating and other techniques to obtain a silver nanowire film. The high-temperature-resistant substrate is flat or curved glass or ceramics, and the substrate is ultrasonically cleaned in acetone, ethanol, and deionized water for 20-30 minutes in advance. The film is composed of silver nanowire grids to form conductive channels, and the resistance of the silver nanowire film is optional in the range of 0.1Ω / square-2Ω / square according to the thickness.

[0024] Step 3: Use a mask to cover the film, leaving only the evaporated and sputtered metal electrodes on both sid...

Embodiment 2

[0029] A method for preparing a silver nanowire film heater resistant to repeated scratches, comprising the steps of:

[0030] Step 1: Disperse the silver nanowires synthesized by the polyol method in an ethanol solution to obtain a silver nanowire colloid with a concentration of 6.5 mg / mL.

[0031] Step 2: Coating the silver nanowire colloid on the high-temperature-resistant substrate by scraping, spraying, spin coating and other techniques to obtain a silver nanowire film. The high-temperature-resistant substrate is flat or curved glass or ceramics, and the substrate is ultrasonically cleaned in acetone, ethanol, and deionized water for 20-30 minutes in advance. The film is composed of silver nanowire grids to form conductive channels, and the resistance of the silver nanowire film is optional in the range of 0.1Ω / square-2Ω / square according to the thickness.

[0032] Step 3: Use a mask to cover the film, leaving only the evaporated and sputtered metal electrodes on both sid...

Embodiment 3

[0036] A method for preparing a silver nanowire film heater resistant to repeated scratches, comprising the steps of:

[0037] Step 1: Disperse the silver nanowires synthesized by the polyol method in an ethanol solution to obtain a silver nanowire colloid with a concentration of 20 mg / mL.

[0038] Step 2: Coating the silver nanowire colloid on the high-temperature-resistant substrate by scraping, spraying, spin coating and other techniques to obtain a silver nanowire film. The high-temperature-resistant substrate is flat or curved glass or ceramics, and the substrate is ultrasonically cleaned in acetone, ethanol, and deionized water for 20-30 minutes in advance. The film is composed of silver nanowire grids to form conductive channels, and the resistance of the silver nanowire film is optional in the range of 0.1Ω / square-2Ω / square according to the thickness.

[0039] Step 3: Use a mask to cover the film, leaving only the evaporated and sputtered metal electrodes on both side...

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Abstract

The invention discloses a preparation method of a silver nanowire film heater resistant to repeated scraping. The method comprises the steps: coating a high-temperature-resistant substrate with silvernanowire glue; preparing line electrodes at the two ends of a conductive thin film; performing the dip coating of the surface layer of a metal thin film device with a layer of silica sol and then performing curing; finally, coating a device with a layer of glass glaze in a silk-screen or blade coating mode, and after high-temperature annealing, obtaining the heater resistant to repeated scrapingof the metal nano conductive thin film. The problems that an existing heater is complex in process, uneven in heating and not resistant to scratching are solved. According to the invention, the silvernanowire synthesized by a low-temperature liquid phase method is used as a raw material, the conductive film is coated by a non-vacuum and non-high-temperature film preparation process, and the thin-layer protective film is obtained by coating silica sol and glass glaze, so the raw material is low in cost, the preparation process condition requirement is low, and large-scale production can be realized.

Description

technical field [0001] The invention relates to a preparation method of a silver nanowire film heater resistant to repeated scratching. Background technique [0002] In recent years, with the rapid development of science and technology, metal nanowire films are widely used in optics, automobiles, touch screens, heating sheets and other fields, and the market has higher and higher requirements for their surface quality. Scratching is a kind of mechanical deformation and destruction behavior produced when sharp and hard objects slide on the surface of the material. The action of multi-dimensional and complex stress causes visible scratches on the surface of the material due to plastic deformation, which negatively affects the aesthetics, integrity and durability of the material. Recently, conductive thin films based on metal nanowires have attracted widespread attention. Nanowires have good toughness, but the preparation process of conductive thin films in traditional heaters...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/12H05B3/34B05D7/00
CPCH05B3/12H05B3/34B05D7/584B05D2203/30B05D2203/35
Inventor 杨泽芳时君季书林
Owner NANJING SILVERNANO NEW MATERIALS TECH CO LTD
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