Preparation method of low-angle-dependence red polystyrene colloidal crystal film

A technology of colloidal crystals and polystyrene, applied in the field of photonic crystal structural color preparation, can solve the problem of not being able to obtain a single red color, and achieve the effect of broad application prospects

Inactive Publication Date: 2016-06-29
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a method for preparing a red polystyrene colloidal crystal film with low angle dependence, so as to solve the problem that the color of the PS colloidal crystal film is angle-dependent and appears iridescent. Can't get a clear single red issue

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  • Preparation method of low-angle-dependence red polystyrene colloidal crystal film
  • Preparation method of low-angle-dependence red polystyrene colloidal crystal film

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Embodiment Construction

[0018] The following describes the implementation of the present invention in detail with reference to the drawings and embodiments.

[0019] The method for preparing a red polystyrene colloidal crystal film with low angle dependence of the present invention includes the following steps:

[0020] (1) Prepare monodisperse and uniform PS microsphere mother liquor with an average particle size of 440±10nm by emulsion polymerization, dilute it to a PS microsphere concentration of 0.1-0.5wt% with deionized water as a solvent The emulsion is placed in 30-100mL glassware for ultrasonic dispersion for 30-60min.

[0021] (2) Clean the substrate with deionized water, then ultrasonically clean it in ethanol and deionized water for 30-90 minutes, and then dry it for later use. The cleaned substrate is vertically fixed in the ultrasonically dispersed PS emulsion, and placed in an oven for 9-12 hours to slowly dry, and the drying temperature is controlled to be 40-65°C.

[0022] (3) Put the assemb...

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Abstract

The invention relates to a preparation method of a low-angle-dependence red polystyrene colloidal crystal film, and belongs to the technical field of photonic crystal structure color preparation.The method comprises the steps that a mother solution of PS microspheres with the average particle size of 440+ / -10 nm is taken and diluted into an emulsion with the PS microsphere concentration of 0.1 wt%-0.5 wt% by taking deionized water as solvent, and the emulsion is put in a glass ware to be subjected to ultrasonic dispersion for 30-60 min; a cleaned substrate is vertically fixed in the dispersed PS emulsion, then the PS emulsion is put into a drying oven to be slowly dried, and the drying temperature is controlled to range from 40 DEG C to 65 DEG C; the surface of an assembled PS colloidal crystal film is plated with a carbon film with the thickness of 5-10 nm through a steaming plating instrument, a light absorption background is provided, the reflectivity in a photonic forbidden band is enhanced, the reflectivity to wavelengths beyond the forbidden band is reduced, and stray light is absorbed; color generation on a macro level shows low angle dependence, and the single red color not the rainbow color is presented.

Description

Technical field [0001] The invention belongs to the technical field of photonic crystal structure color preparation, and particularly relates to a method for preparing a red polystyrene (PS) colloidal crystal film with low angle dependence. Background technique [0002] Structural color is the effect of selective reflection and transmission of certain wavelengths produced by the interaction between visible light and the physical microstructure of the material when light is irradiated on the surface of an object, leading us to perceive color. Structural color phenomena are not uncommon in nature. For example, blue sky originates from Rayleigh scattering, the color of oil stains on the water surface originates from film interference, and rainbow originates from refraction. The structural color is related to the material microstructure and material properties. As long as the microstructure that produces the structural color and the physical properties of the material remain unchang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C23C14/06C23C14/24
CPCC08J5/18C08J2325/06C23C14/0605C23C14/24
Inventor 王莉丽王秀锋刘派王浩江红涛
Owner SHAANXI UNIV OF SCI & TECH
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