Composite photon structure material with generated color being high in luminance and low in angle dependence and preparation method thereof

An angle-dependent, photon-structured technology, which is applied to devices, coatings, special surfaces, etc. for coating liquid on the surface, can solve the problems of complex preparation process, high cost, and difficulty in large-scale application, and achieve wide application Prospects, low-cost effects

Active Publication Date: 2019-01-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(Su X, Xia H, Zhang S, et al.Vivid structural colors with low angle dependence from long-range ordered photonic crystal films[J].Nanoscale,2016,9(9):3002-3009.) But the high refractive index The preparation process of metal oxide nano-microspheres is complicated, the cost is high, and the amount of organic solvent is not environmentally friendly, so it is difficult to carry out large-scale application

Method used

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  • Composite photon structure material with generated color being high in luminance and low in angle dependence and preparation method thereof
  • Composite photon structure material with generated color being high in luminance and low in angle dependence and preparation method thereof
  • Composite photon structure material with generated color being high in luminance and low in angle dependence and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Prepare negatively charged monodisperse polystyrene nanospheres on the surface by soap-free emulsion polymerization. The specific preparation method is: 4g styrene, 1g methacrylic acid, and 100g deionized water are placed in a 250mL four-necked flask In the process, stir at a speed of 300r / min and slowly raise the temperature to 75°C. After the temperature stabilizes, dissolve 0.15g of ammonium persulfate in 5g of deionized water, quickly add it to the aforementioned four-necked flask, and stir for 12 hours. After the reaction, centrifuge and wash 3 times, and finally disperse in deionized water for later use. The particle diameter of the obtained polystyrene nano microsphere is 207nm, and the surface of the particle is negatively charged.

[0035] (2) The polystyrene nano-microspheres obtained in step (1) and the anionic polyurethane dispersion (the anionic polyurethane dispersion used is selected from commercial Dispercoll U53) and carbon black are ①10:1:0.1, ②10:...

Embodiment 2-3

[0042] The negatively charged monodisperse polystyrene nanospheres in Example 1 are replaced with negatively charged silica nanospheres (the silica nanospheres are selected from Zhongke Leiming (Beijing) Technology Co., Ltd., DKSIO200 , particle size 200nm), negatively charged polymethyl methacrylate nano-microspheres (the polymethyl methacrylate nano-microspheres are selected from Shanghai Zhenzhun Biotechnology Co., Ltd., ZZS-MMA200, particle size 200nm), microspheres Mix and disperse with anionic polyurethane dispersion and carbon black at a mass ratio of 10:2:0.1, and other conditions are consistent with Example 1.

[0043] Table 2

[0044]

Embodiment 4-5

[0046] The anionic polyurethane dispersion in Example 1 was replaced by an anionic acrylic emulsion, anionic epoxy resin emulsion, microspheres, anionic polymer emulsion and carbon black were mixed in a mass ratio of 10:2:0.1 and Dispersed, other conditions are consistent with embodiment 1.

[0047] table 3

[0048]

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PUM

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Abstract

The invention discloses a composite photon structure material with generated color being high in luminance and low in angle dependence and a preparation method thereof. The method comprises the step that monodispersed nano microspheres, polymer emulsion with the same electric charge as the microspheres, and black light absorption substances are mixed and subjected to self-assembly under the heat-aiding condition, so that a composite structure photonic crystal film with the surface being in long-range order and the interior being unformed is obtained, wherein the prepared photonic crystal filmhas the structure color being high in luminance and low in angle dependence. The preparation method is simple in process, environmentally friendly and non-toxic and has the wide application prospect in the fields such as color display, coatings, textiles and ceramic.

Description

technical field [0001] The invention belongs to the technical field of photonic crystal structural color preparation, and in particular relates to a composite photonic structure material with high brightness and low angle dependence for color rendering and a preparation method thereof. Background technique [0002] Compared with traditional dyes and pigments, structural chromogenic materials based on photonic crystals can display vivid and bright colors, and usually have a metallic luster that ordinary dyes cannot achieve. However, due to its structural characteristics, photonic crystal structural color materials have a strong angle dependence in the color generation process, which limits their applications in many fields. [0003] Angle-independent structural color is an important type of photonic crystal structural color, which has important applications in display, anti-counterfeiting, sensing and other fields. At present, the non-angle-dependent structural color is basi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D5/00
CPCB05D5/00B05D7/24
Inventor 沈慧芳陈高文
Owner SOUTH CHINA UNIV OF TECH
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