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Ink

An ink and cycloalcohol technology, used in inks, household appliances, applications, etc., can solve the problems of poor stability, poor dispersibility, low viscosity of printing ink, etc., to achieve uniform dispersion, good dispersion performance and volatility, and improve energy efficiency.

Inactive Publication Date: 2019-10-01
SHENZHEN TCL IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a kind of ink, aiming at solving the problems of low viscosity, poor dispersibility and poor stability of existing printing inks

Method used

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preparation example Construction

[0053] Based on the above-mentioned printing ink, the present invention also provides a preparation method of the printing ink, comprising the steps of: first dispersing the inorganic nanomaterial in a solvent containing at least one cyclic alcohol organic solvent according to the above-mentioned formula, and then stirring evenly to obtain Printing ink with proper viscosity and surface tension. Control the boiling point of all ink compositions below 400°C.

[0054] The present invention also provides a method for carrying out inkjet printing with the printing ink, which comprises the steps of:

[0055] Inorganic nanomaterial layer printing: choose a suitable inkjet printer to inkjet print the inorganic nanomaterial layer.

[0056] Post-processing: Under the action of heating up or cooling down and / or decompression, the cyclic alcohol organic solvent in the inorganic nanomaterial layer is removed, except for the inorganic nanomaterial (quantum dot), other organic substances in t...

Embodiment 1

[0063] The mixed solvent is composed of tetradecane and (R)-2,2-dimethyl-1,3-dioxolane-4-propanol, all solvents are purified to purity by dehydration and deoxygenation by corresponding methods Greater than 99.9%.

[0064] The following components were added to about 500mL single-necked flask, under stirring, the addition order was: 10wt% oleylamine-stabilized red CdSe / ZnS quantum dots, 10wt% tetradecane, 80wt% (R)-2, 2-Dimethyl-1,3-dioxolane-4-propanol, and the mixture was stirred for 30 minutes to obtain a printing ink.

[0065] The printing ink is injected into the printing inkjet printer cartridge, the corresponding parameters are adjusted, and the red quantum dot layer of 20×30um and resolution 200×200ppi is printed.

[0066] Place the printed substrate on a hot stage and heat it to 155°C with a vacuum of 1×10 -4 Volatilize and dry under Torr for 30 minutes to obtain a monochromatic quantum dot light-emitting layer.

Embodiment 2

[0068] The mixed solvent is composed of tridecane, decahydronaphthalene and 6,6-dimethyl-1-propyl-bicyclo[3.1.1]heptane-2-propanol. Various solvents are used to remove water, Deoxygenated and refined to a purity greater than 99.9%.

[0069] Add the following components to an approximately 500 mL high-density polyethylene bottle with stirring in the following order: 10 wt% oleylamine-stabilized green CdZnSe / CdZnS, 25 wt% tridecane, 40 wt% decahydronaphthalene, 25 wt% % 6,6-dimethyl-1-propyl-bicyclo[3.1.1]heptane-2-propanol, and the mixture was stirred for 30 minutes to obtain printing ink.

[0070] With an inkjet printer, it is printed into a green quantum dot layer of 20×30um and a resolution of 200×200ppi.

[0071] Heating to 180° C. on a hot plate, volatilizing and drying under nitrogen flow for 30 minutes, to obtain a monochromatic quantum dot light-emitting layer.

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Abstract

The invention discloses ink which is prepared from the following ingredients in percentage by weight: 0.1 to 20.0 percent of inorganic nanometer materials and 80.0 to 99.9 percent of a solvent, wherein the solvent comprises at least one kind of cyclitol organic solvents. The print ink provided by the invention has proper viscosity and surface tension, and simultaneously has the advantages of gooddispersion performance, good volatilization performance and storage stability.

Description

technical field [0001] The invention relates to the field of ink formulations, in particular to an ink. Background technique [0002] In recent years, quantum dot (QD) luminescent materials have played a great role in LED lighting, liquid crystal display and other fields. Quantum dots replace traditional phosphors, effectively improving the color gamut of LED and liquid crystal display. Recently, quantum dot light-emitting diodes (QLEDs) with luminescent materials as the light-emitting layer have broad application prospects in solid-state lighting, flat panel display and other fields, and have attracted extensive attention from academia and industry. [0003] The solution processing characteristics of quantum dots make the quantum dot light-emitting layer can be prepared by various methods such as spin coating, scraping coating, spraying, and inkjet printing. Compared with the previous methods, the inkjet printing technology can accurately deposit the quantum dot luminescen...

Claims

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Application Information

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IPC IPC(8): C09D11/36C09D11/50
CPCC09D11/36C09D11/50
Inventor 李雪朱佩向超宇
Owner SHENZHEN TCL IND RES INST
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