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Water-solubility silver nanowire writing ink and preparation method thereof as well as using method thereof

A silver nanowire, water-soluble technology, applied in the preparation of water-soluble silver nanowire ink and its application in the field of transparent conductive film, to achieve the effect of simple process, good conductivity and easy operation

Active Publication Date: 2012-03-28
JIANGSU NANOWELL ADVANCED MATERIALS SCI&TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the preparation of transparent conductive films with good adhesion, good light transmittance and good conductivity by one-step method of silver nanowire ink

Method used

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  • Water-solubility silver nanowire writing ink and preparation method thereof as well as using method thereof
  • Water-solubility silver nanowire writing ink and preparation method thereof as well as using method thereof
  • Water-solubility silver nanowire writing ink and preparation method thereof as well as using method thereof

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preparation example Construction

[0056] The present invention also provides the preparation method of above water-soluble silver nanowire ink, and described preparation method comprises the following steps:

[0057] a) Weigh polyvinyl alcohol and deionized water, under stirring, at 80 o C-100 o C dissolves into a homogeneous transparent solution;

[0058] b), cooling the transparent solution to about 40 o C, add cross-linking agent and catalyst, stir and mix evenly;

[0059] c) adding quantitative silver nanowire aqueous solution and stirring to prepare silver nanowire ink.

[0060] The present invention also provides a method for using the water-soluble silver nanowire ink described above. The ink can be used to prepare a transparent conductive film, which specifically includes the following steps: spraying, rod coating, roller coating, spin coating, and screen printing. The silver nanowire ink forms a uniform film layer on the substrate, and forms a solidly bonded silver nanowire conductive layer on the...

Embodiment 1

[0070] Add 3 g of polyvinyl alcohol (grade 1799) and 300 g of deionized water into a 500 mL three-neck flask equipped with a thermometer, stirrer and reflux condenser, stir and heat to 95 o C, maintain 1h, obtain colorless transparent solution, cool down to about 40 o C, add 0.2g of dimethylolurea and 0.06g of ammonium chloride, stir and dissolve until a colorless transparent solution is obtained, and cool down to about 25 o C. Add 100 g of silver nanowire aqueous solution (10 mg / mL, average diameter 90 nm, average length 30 μm), stir for 30 min, and mix well to prepare water-soluble silver nanowire ink.

[0071] The corona-treated PET is used as a transparent substrate (visible light transmittance 92.1%), and the silver nanowire ink is used to form a uniform film layer on the substrate by spin coating, 150 o C drying oven for 10min, and then carry out 35atm pressure treatment, namely obtain transparent, conductive, firm transparent conductive film, its scanning electron micr...

Embodiment 2

[0074] Add 5 g of polyvinyl alcohol (grade 2099) and 300 g of deionized water into a 500 mL three-neck flask equipped with a thermometer, stirrer and reflux condenser, stir and heat to 95 o C, maintain 1h, obtain colorless transparent solution, cool down to about 40 o C, add maleic anhydride 1.0g and ammonium sulfate 0.4g, stir and dissolve until a colorless and transparent solution is obtained, cool to about 25 o C. Add 150 g of silver nanowire aqueous solution (15 mg / mL, average diameter 120 nm, average length 70 μm), stir for 30 min, and mix well to prepare water-soluble silver nanowire ink.

[0075]Using PC treated with UV ozone on the surface as a transparent substrate (visible light transmittance 90.5%), the silver nanowire ink is used to form a uniform film layer on the substrate by spraying, 150 o C oven drying 10min, continue 150 o After heat treatment at C for 30 minutes, a transparent, conductive, and firm transparent conductive film was obtained, with a visible l...

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Abstract

The invention provides water-solubility silver nanowire writing ink and a using method of the water-solubility silver nanowire writing ink for preparing a transparent conductive thin film. The water-solubility silver nanowire writing ink is characterized in that the silver nanowire writing ink containing a water-solubility polymer is prepared, and then the writing ink forms the conductive thin film on a transparent substrate by a one-step method. The water-solubility polymer can realize the firm adhesive bonding between the silver nanomwire and the substrate and solves the difficult problem of poor adhesive bonding performance between the silver nanowire and the substrate; the one-step method greatly simplifies the productive technology of the silver nanowire transparent conductive thin film; an organic solvent is not used in the whole production process; and therefore, the water-solubility silver nanowire writing ink is environment-friendly and pollution-free and has very good practical application value.

Description

technical field [0001] The invention relates to silver nanowire ink and its preparation method and use method, in particular to the preparation of water-soluble silver nanowire ink and its application method for preparing transparent conductive film. Background technique [0002] Transparent conductive film refers to a conductive film coated on a surface or substrate with high light transmission. It has good optical transparency and surface conductivity at the same time, and is widely used in products such as liquid crystal displays, touch screens, LEDs, and thin-film solar cells. [0003] At present, indium tin oxide (ITO) thin films prepared by vacuum evaporation chemical deposition process have become the most widely used materials due to their excellent optical transparency and electrical conductivity. However, the ITO film is brittle and easily damaged when subjected to bending, which severely limits its application on flexible substrates. In addition, the lack of ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D129/04C09D7/12C09D5/24C09D11/10H01B1/22C09D11/52
Inventor 周波轩姜清奎常振宇丁渐宝
Owner JIANGSU NANOWELL ADVANCED MATERIALS SCI&TECH
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