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Low-angular-dependence blue cadmium-sulfide-structure color film and preparation method thereof

A cadmium sulfide, dependent technology, applied in the direction of cadmium sulfide, coating, etc., to achieve the effect of good sphericity, uniform seed particle size, and wide application prospects

Inactive Publication Date: 2019-03-19
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] So far, no literature has reported on the use of cadmium sulfide to prepare short-range ordered structures and high-saturation structural color materials.

Method used

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  • Low-angular-dependence blue cadmium-sulfide-structure color film and preparation method thereof
  • Low-angular-dependence blue cadmium-sulfide-structure color film and preparation method thereof
  • Low-angular-dependence blue cadmium-sulfide-structure color film and preparation method thereof

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preparation example Construction

[0045] The preparation method of the low-angle-dependent blue cadmium sulfide structural color thin film of the present invention comprises the following steps:

[0046] 1) According to the ratio of (20-30) g: 80 mL, fully dissolve cadmium nitrate tetrahydrate in diethylene glycol, and let it stand to prepare the cadmium source; according to thiourea: diethylene glycol = (6-10) g: 80mL ratio, fully dissolve thiourea in diethylene glycol to obtain a uniform solution as a sulfur source;

[0047] 2) According to the ratio of (0.6-1.0) g: 60mL, dissolve polyvinylpyrrolidone in diethylene glycol, heat and magnetically stir to obtain a uniform mixed base solution; heat up, add sulfur source and cadmium source in step 1) successively , to react for a period of time; the ratio of the sulfur source to the mixed base solution is (180-240) μL: 60 mL, and the ratio of the cadmium source to the mixed base solution is (180-240) μ L: 60 mL.

[0048] 3) After the reaction in step 2), place i...

Embodiment 1

[0058] A method for preparing a low-angle-dependent blue cadmium sulfide structural color film, comprising the following steps:

[0059] 1) According to the ratio of 20g:80mL, stir cadmium nitrate tetrahydrate for 6h to fully dissolve in 80mL diethylene glycol, and let it stand for 1h to prepare the cadmium source; according to the ratio of thiourea:diethylene glycol=6g:80mL, the sulfur Urea was dissolved in 80mL of diethylene glycol, and magnetically stirred for 6 hours to mix well and obtain a uniform solution as a sulfur source.

[0060] 2) According to the ratio of 0.6g: 60mL, dissolve polyvinylpyrrolidone (PVP) in 60mL diethylene glycol, heat and magnetically stir for 2 hours, rotate at 500r / min, and heat at 60°C to obtain a uniform mixture Base solution; warm up to 190°C, first add 180 μL of the sulfur source in step 1), and then add 180 μL of the cadmium source in step 1).

[0061] 3) After step 2) was reacted for 6 minutes, it was quickly cooled in ice water at 10°C, ...

Embodiment 2

[0065] A method for preparing a low-angle-dependent blue cadmium sulfide structural color film, comprising the following steps:

[0066] 1) According to the ratio of 25g: 80mL, stir cadmium nitrate tetrahydrate for 7h and fully dissolve it in 80mL diethylene glycol, and let it stand for 1h to prepare the cadmium source; according to the ratio of thiourea:diethylene glycol=8g:80mL, the sulfur Urea was dissolved in 80mL of diethylene glycol, and magnetically stirred for 7 hours to mix well and obtain a uniform solution as a sulfur source.

[0067] 2) According to the ratio of 0.8g: 60mL, dissolve polyvinylpyrrolidone (PVP) in 60mL diethylene glycol, heat and magnetically stir for 1 hour, rotate at a speed of 500r / min, and heat at a temperature of 50°C to obtain a uniform mixture Base solution; warm up to 160°C, first add 200 μL of the sulfur source in step 1), and then add 200 μL of the cadmium source in step 1).

[0068] 3) After step 2) was reacted for 5 minutes, it was quick...

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Abstract

The invention provides a low-angular-dependence blue cadmium-sulfide-structure color film and a preparation method thereof. The preparation method comprises the following steps: (S1) respectively preparing a cadmium source, a sulfur source and a mixed base solution; (S2) adding the cadmium source and the sulfur source into the mixed base solution, and carrying out high-temperature reaction, so asto obtain a seed solution; (S3) after the reaction in the step (S2) is finished, introducing the seed solution into ice water at 0-10 DEG C, rapidly cooling to the room temperature, carrying out centrifugation, and remaining bright yellow clear and transparent supernate; (S4) adding cadmium nitrate tetrahydrate and thiourea into the supernate obtained in the step (S3), reacting to obtain an emulsion containing cadmium sulfide microspheres, washing, and ultrasonically dispersing the emulsion into an ethanol solvent, so as to obtain an ethanol solution containing monodisperse cadmium sulfide microspheres; and (S5) carrying out film coating by virtue of a vertical settling method. The prepared cadmium-sulfide-structure color film is of an isotropic structure, stable in color generation, unlikely to fade and weak in angular dependence, and the color of the film is not changed along the change of an observation angle.

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 blue cadmium sulfide structural color film and a preparation method thereof. Background technique [0002] Photonic crystal (PC) is a new type of optical microstructure material whose dielectric constant changes periodically with space. It is to combine dielectric materials with different dielectric constants in one-dimensional, two-dimensional or three-dimensional space to form a refractive index of the order of light wavelength. Periodically changing structural materials. Structural color is a kind of physical coloration, which has the advantages of bright color, never fading, environmental friendliness, and short preparation cycle. Because of its high brightness, high saturation, never fading, iridescent phenomenon, polarization effect and other characteristics, these are not available in ordinary pigment col...

Claims

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Application Information

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IPC IPC(8): C01G11/02C03C17/22
CPCC01G11/02C01P2002/72C01P2004/03C01P2004/32C01P2004/62C03C17/006C03C17/22C03C2217/288C03C2217/42C03C2218/111
Inventor 王芬薛雨朱建锋赵婷方媛方园罗宏杰卢博
Owner SHAANXI UNIV OF SCI & TECH
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