Low angle dependence blue ZnS structural color film and preparation method thereof

A zinc sulfide, dependent technology, applied in the field of low angle-dependent blue zinc sulfide structural color film and its preparation, can solve the problems of reducing structural color dependence, difficult to widely apply, and film quality influence, and achieves easy solution. Fading, solving the effect of strict substrate requirements and simple preparation methods

Active Publication Date: 2016-01-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 a periodic structure through dry radiation, diffraction, scattering, etc., resulting in colorful structural colors. , but 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 can improve the color saturation, and can effectively

Method used

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  • Low angle dependence blue ZnS structural color film and preparation method thereof
  • Low angle dependence blue ZnS structural color film and preparation method thereof
  • Low angle dependence blue ZnS structural color film and preparation method thereof

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Effect test

Embodiment 1

[0027] The present invention is achieved through the following technical solutions:

[0028] A preparation method for blue zinc sulfide structural color pigment, comprising the following steps:

[0029] 1) Weigh Zn(NO 3 ) 2 ·6H 2 O and polyvinylpyrrolidone (PVP) several grams, add in the beaker, according to the ratio 0.06gPVP:100mL deionized water, total water is 100mL magnetic stirring fully dissolves and evenly mixes, and stirs 30min to obtain uniform solution;

[0030] 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;

[0031] 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 times and ultrasonic dispersion to obtain monodisperse zi...

Embodiment 2

[0035] 1) Weigh Zn(NO 3 ) 2 ·6H 2 O and polyvinylpyrrolidone (PVP) several grams, add in the beaker, according to the ratio 0.055gPVP:100mL deionized water, total water is 100mL magnetic stirring fully dissolves and evenly mixes, and stirs 30min to obtain uniform solution;

[0036] 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;

[0037]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;

[0038] 4) Place the glass or ceramic substrate on the ethanol solution of monodisperse zinc sulfide microspheres prepared in ste...

Embodiment 3

[0040] 1) Weigh Zn(NO 3 ) 2 ·6H 2 O and some grams of polyvinylpyrrolidone (PVP), add in the beaker, according to the ratio of 0.05gPVP:100mL deionized water, the total amount of water is 100mL magnetic stirring is fully dissolved and evenly mixed, stirred for 30min to obtain a uniform solution;

[0041] 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;

[0042] 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;

[0043] 4) Place the glass or ceramic substrate on the ethanol solution of monodisperse zinc sulfid...

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Abstract

The present invention discloses a low angle dependence blue ZnS structural color film and a preparation method thereof, and belongs to the technical field of the preparation of the structural color material. The method is as follows: first, chemical homogeneous precipitation method is used to prepare uniform size ZnS microsphere nanoparticles, a film is produced on glass or ceramic substrate surface, and the film is calcined in a reducing atmosphere for protection, so that trace organics are carbonized to obtain the blue structural color film with uniform distributed carbon black. The method is simple, and highly repetitive, solves the technical problems that organic chemical paint is easy to fade and harmful to human body, meanwhile overcomes problems of high substrate requirements, harsh coating conditions and the like of opal structure photonic crystal, is suitable for construction of angle-dependent color-variable structural color pigments on surface of a variety of materials, and has broad application prospects. The prepared blue ZnS structural color film has uniform distributed carbon black, no angle dependence, good sphericity, and uniform particle size.

Description

technical field [0001] The invention belongs to the technical field of photonic crystal material preparation, and in particular relates to a low-angle-dependent blue zinc sulfide structural color thin 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 a periodic structure through dry radiation, diffraction, scattering, etc., resulting in c...

Claims

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Application Information

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IPC IPC(8): C03C17/22C04B41/50C04B41/85
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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