Method for preparing large-area structural coloration pattern by ink-jet printing

A technology of inkjet printing and structural color generation, applied in the directions of copying/marking method, printing, ink, etc., can solve the problems of high price and limited use of the second equipment, and achieve the effect of strong practicability and low cost

Active Publication Date: 2017-06-27
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above two methods can obtain large-area structural color patterns, the matrix materials required by the two methods must be pre-treated, and the second equipment is expensive, which limits its use.

Method used

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  • Method for preparing large-area structural coloration pattern by ink-jet printing
  • Method for preparing large-area structural coloration pattern by ink-jet printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Inkjet printing CdS ink to obtain large-area red structural color patterns.

[0030] First prepare monodisperse CdS colloidal microspheres, the specific preparation method is as follows:

[0031] Take by weighing 6g polyvinylpyrrolidone powder (PVP), add 150mL diethylene glycol, then add the cadmium nitrate and thiourea powder of equal amount of substance, the amount of substance of cadmium nitrate and thiourea is 15mmol, stir until all powders dissolve completely . The solution was heated to 160° C., kept for 5 hours, and then naturally cooled to room temperature. The product was centrifuged, washed with ethanol and water three times and dried.

[0032] Weigh a certain amount of monodisperse CdS microsphere powder and grind it fully, wherein the content of monodisperse colloidal microspheres is 12wt%, the content of ethylene glycol is 5wt%, the content of ethanol is 10wt%, and the content of glycerin is 5wt%. , the content of PVP is 2.7wt%, the content of tributyl ph...

Embodiment 2

[0035] Inkjet printing CdS ink to obtain large-area red structural color patterns.

[0036] First prepare monodisperse CdS colloidal microspheres, the specific preparation method is as follows:

[0037] Take by weighing 6g polyvinylpyrrolidone powder (PVP), add 150mL diethylene glycol, then add the cadmium nitrate and thiourea powder of equal amount of substance, the amount of substance of cadmium nitrate and thiourea is 20mmol, stir until all powders dissolve completely . The solution was heated to 162°C, kept for 6 hours, and then naturally cooled to room temperature. The product was centrifuged, washed with ethanol and water three times and dried.

[0038] Weigh a certain amount of monodisperse CdS microsphere powder and grind it fully, wherein the content of monodisperse colloidal microspheres is 15wt%, the content of ethylene glycol is 5wt%, the content of ethanol is 10wt%, and the content of glycerol is 5wt%. , the content of PVP is 3wt%, the content of tributyl phosph...

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Abstract

The invention discloses a method for preparing a large-area structural coloration pattern by ink-jet printing. According to the method, high-reflective-index monodisperse colloidal microspheres, a high-boiling additive, ethanol, glycerol, a surfactant, a defoamer, adhesive, a pH adjusting agent and deionized water are mixed, and ink obtained through ultrasonic dispersion is injected into an ink cartridge of an ink jet printer for printing. According to the method, the high-reflective-index monodisperse colloidal microspheres are evenly deposited on paper through a common ink jet printer, and a short-range order and long-range disordered microstructure is obtained; and due to the mutual effect of the nanometer microspheres with different grain diameters and light, the structural color pattern with different colors can be obtained, the preparation of the large-area structural color pattern is achieved, the method is high in expansibility, and the method has the wide application prospects on the aspects of the display, security and the like.

Description

technical field [0001] The invention belongs to the field of large-area structural color pattern preparation, and particularly relates to a method for obtaining large-area structural color patterns on paper by using inkjet printing technology. Background technique [0002] The color effect produced by the dispersion, refraction, diffraction and interference of light is called structural color. Structural color has the characteristics and advantages of brightness, high saturation, and never fading. Therefore, how to prepare large-area structural color photonic crystal patterns has attracted great attention in recent years. Currently, methods for obtaining structural color patterns include self-assembly, vertical deposition, spin-coating, and inkjet printing techniques. The self-assembly method needs to use a patterned template substrate to assemble colloidal particles onto the template under the effect of spatial confinement, which is difficult to prepare on a large scale, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/00C09D11/30C09D11/32C09D11/38
CPCB41M5/0023C09D11/30C09D11/32C09D11/38
Inventor 武素丽常杰刘宝琦张淑芬
Owner DALIAN UNIV OF TECH
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