Low-angle-dependence violet zinc-sulfide structural color film and preparing method thereof

A zinc sulfide-dependent technology, applied in the field of low-angle-dependent purple zinc sulfide structural color thin film and its preparation, can solve the problems of high coating environment requirements, reduce structural color dependence, and difficulty in wide application, and achieve a solution Strict requirements on the substrate, simple and easy process operation, and solve the effect of easy fading

Inactive Publication Date: 2015-12-23
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, through the ordered self-assembly method of colloidal microspheres, opal structure photonic crystals can be formed, and finally the light forms on the surface of photonic crystals with periodic structures through dry radiation, diffraction, scattering, etc., resulting in colorful structural colors. However, because of the iridescent effect, that is, the colors observed in different directions are different, which greatly limits the application of structural color in wide viewing angle displays such as flat panel display, printing media, and optical equipment.
Some researchers have proposed that adding a small amount of black pigment to the short-range ordered structure can also improve the color saturation. Due to the isotropy of the short-range ordered structure, it can effectively reduce the dependence of the...

Method used

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  • Low-angle-dependence violet zinc-sulfide structural color film and preparing method thereof
  • Low-angle-dependence violet zinc-sulfide structural color film and preparing method thereof
  • Low-angle-dependence violet zinc-sulfide structural color film and preparing method thereof

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Embodiment 1

[0028] The present invention is achieved through the following technical solutions:

[0029] A preparation method of a low-angle-dependent purple zinc sulfide structural color pigment, comprising the following steps:

[0030] 1) Weigh Zn(NO 3 ) 2 ·6H 2 O and some grams of polyvinylpyrrolidone (PVP), add in the beaker, add deionized water according to the ratio of 0.06gPVP: 100mL, the total amount of water is 100mL magnetic stirring is fully dissolved and uniformly mixed, stirred for 30min to obtain a uniform solution;

[0031] 2) Accurately weigh 0.3 g of thioacetamide, add 50 mL of deionized water and ultrasonically mix for 10-20 minutes to obtain an aqueous solution of thioacetamide;

[0032] 3) Stir the above two homogeneous solutions of 1) and 2) respectively, add them into the same beaker, and react in a water bath at 80°C for 6 hours under magnetic stirring to obtain an emulsion containing zinc sulfide microspheres, and then wash with water , alcohol washing three ti...

Embodiment 2

[0036] 1) Weigh Zn(NO 3 ) 2 ·6H 2O and some grams of polyvinylpyrrolidone (PVP), add in the beaker, add deionized water according to the ratio of 0.065gPVP: 100mL, the total amount of water is 100mL magnetic stirring is fully dissolved and uniformly mixed, and stirred for 30min to obtain a uniform solution;

[0037] 2) Accurately weigh 0.3 g of thioacetamide, add 50 mL of deionized water and ultrasonically mix for 10-20 minutes to obtain an aqueous solution of thioacetamide;

[0038] 3) Stir the above two homogeneous solutions of 1) and 2) evenly, add them into the same beaker, and react in a water bath at 80° C. for 7 hours under magnetic stirring to obtain an emulsion containing zinc sulfide microspheres. After washing with water and washing with alcohol for three times, ultrasonic dispersion is carried out to obtain an ethanol solution of monodisperse zinc sulfide microspheres;

[0039] 4) Place the glass or ceramic substrate in the ethanol solution of monodisperse zinc ...

Embodiment 3

[0041] 1) Weigh Zn(NO 3 ) 2 ·6H 2 O and polyvinylpyrrolidone (PVP) several grams, add in the beaker, according to the ratio 0.07gPVP:100mL deionized water, total water is 100mL magnetic stirring fully dissolves and evenly mixes, and stirs 30min to obtain uniform solution;

[0042] 2) Accurately weigh 0.4 g of thioacetamide, add 50 mL of deionized water and ultrasonically mix for 10-20 minutes to obtain an aqueous solution of thioacetamide;

[0043] 3) Stir the above two homogeneous solutions of 1) and 2) respectively, add them into the same beaker, and react in a water bath at 85° C. for 5 hours under magnetic stirring to obtain an emulsion containing zinc sulfide microspheres. After washing with water and washing with alcohol for three times, ultrasonic dispersion is carried out to obtain an ethanol solution of monodisperse zinc sulfide microspheres;

[0044] 4) Put the glass or ceramic substrate in the ethanol solution of monodisperse zinc sulfide microspheres prepared in...

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Abstract

The invention discloses a violet zinc-sulfide photonic crystal structural color film and a preparing method thereof, and belongs to the technical field of photonic crystal material preparing. The preparing method includes the steps that zinc sulfide microsphere nano-particles with uniform particle sizes are firstly prepared with a chemical homogeneous precipitation method, a short-range order film is prepared and then roasted in protection atmosphere to enable a trace of organic substances to be carbonized, and therefore the violet structural color film with evenly-distributed carbon black is obtained. The preparing method is simple, repeatability is high, the technical problems that chemical organic pigment is prone to fading and is harmful to the human body are solved, and meanwhile the problems that the requirements of opal structure photonic crystals for a substrate are high, and film coating conditions are strict are solved. The operating process is simple and practicable, large-scale industrial production can be achieved, the preparing method is suitable for building optically-variable-free structural color pigment on the surfaces of various materials, and the broad application prospects are achieved. The prepared violet zinc-sulfide photonic crystal structural color film is even in carbon black distribution, free of angle dependence, good in sphericity degree and uniform in particle size.

Description

technical field [0001] The invention belongs to the technical field of preparation of structural color materials, and in particular relates to a low-angle-dependent purple zinc sulfide structural color film and a preparation method thereof. Background technique [0002] Materials with high and low refractive indices are alternately arranged to form a periodic structure, that is, photonic crystals, through which light of a specific wavelength cannot pass through to generate photonic band gaps, thereby producing structural colors. Structural color is a kind of physical coloration, which has the advantages of bright color, never fading, environmental friendliness, and short preparation cycle. In recent years, through the ordered self-assembly method of colloidal microspheres, opal structure photonic crystals can be formed, and finally the light forms on the surface of photonic crystals with periodic structures through dry radiation, diffraction, scattering, etc., resulting in c...

Claims

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Application Information

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IPC IPC(8): C04B41/85C03C17/22
Inventor 王芬张欣盖言成林营王毅朱建锋杨海波
Owner SHAANXI UNIV OF SCI & TECH
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