Inkjet printing ink and method for preparing metal oxide film from inkjet printing ink

An oxide thin film, inkjet printing technology, applied in the direction of copying/marking method, printing post-processing, printing, etc., can solve problems such as limitations, achieve the effect of improving jetting performance, increasing hydrophilicity, and suppressing coffee ring effect

CN107955459AActive Publication Date: 2018-04-24SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-04-24

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Abstract

The invention belongs to the field of printing electronics and discloses inkjet printing ink and a method for preparing a metal oxide film from the inkjet printing ink. The inkjet printing ink is prepared from a glycol solvent, 0.3-5wt.% polyacrylamide and 0.1-0.6M zirconium oxychloride octahydrate. The method comprises the following steps: pre-treating a substrate, then setting the temperature ofa base plate of an inkjet printer to be 25-30 DEG C, the voltage of a nozzle to be 30-40V, the temperature of the nozzle to be 55-65 DEG C and the ink droplet interval to be 30-45mu m, and performinginkjet printing on the substrate; after the printing is completed, raising the temperature of the base plate to 40-60 DEG C, and performing standing for 10-15min; and after a liquid membrane completely gels, performing heating treatment at the temperature of 250-500 DEG C so as to obtain a zirconium oxide film. The added water-soluble polymer polyacrylamide containing polar groups has chelation on metal ions, enables the system to quickly gel after temperature rise, limits solute-solvent migration and inhibits the coffee-ring stain effect.
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Description

technical field

[0001] The invention belongs to the field of printed electronics, and in particular relates to an inkjet printing ink and a method for preparing a metal oxide film therefrom. Background technique

[0002] Existing processes for preparing metal oxide films using the sol-gel principle mostly use spin coating, dipping and pulling methods, etc., by dissolving metal alkoxides or inorganic salts in water and alcohol to form precursors with high chemical activity. , and then the solution is coated into a liquid film, and then heat-treated to form a metal oxide film. In recent years, the above solution systems have found application in inkjet printing. By selecting a suitable solvent, a solution whose physical properties meet the requirements of inkjet printing can be obtained.

[0003] The coffee ring effect is a common phenomenon in inkjet printing, and the solution of the above system is no exception when it is applied in inkjet printing. Since the volatilizati...

Examples

Embodiment

[0022] (1) Add polyacrylamide (weight average molecular weight: 40,000) with 0.5% ethylene glycol mass to the ethylene glycol solvent, stir at 45°C for more than 3 hours to fully dissolve, and then add octahydrate with a molar concentration of 0.3M Zirconium oxychloride was dissolved by magnetic stirring, and the inkjet printing ink was obtained after aging for 24 hours.

[0023] (2) Fill the prepared ink into the inkjet printer (Dimatix2800) cartridge, the substrate used is glass, and the substrate is pretreated by UV irradiation for 50s. When printing, the printer substrate is set at 25°C, the nozzle voltage is 30V, the nozzle temperature is 55°C, and the ink droplet spacing is 30μm. After the printing was completed, the substrate was heated to 40°C and left to stand for 10 minutes. After the liquid film was completely gelled, it was placed on a hot stage and heated at 400°C for 1 hour to obtain a zirconia film. (what embodiment represents is a representative concrete exper...