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Color generating composite film and applications thereof

A composite film and color-producing technology, which is applied in the direction of layered products, chemical instruments and methods, and metal layered products, can solve the problems of high production cost, low saturation, and complicated preparation process, and achieve short production cycle, Low cost, simple method and environmental protection effect

Active Publication Date: 2018-10-02
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN103288491A discloses a blue-green photonic crystal structural color film and its preparation method; CN104418972A discloses a photonic crystal capsule pigment and its preparation method and application. Balls and co-assembled materials are co-assembled, and self-assembled from the monodisperse spheres into ordered close-packed photonic crystal microspheres; CN102517801A discloses a method for preparing a structural color fiber film, wherein the polymer microspheres One or more selected from silica microspheres, polystyrene microspheres, and polymethylmethacrylate microspheres; however, the structural color produced by photonic crystals usually exists due to the presence of incoherent scattering The defect of low saturation
[0005] Therefore, people will add strong absorptive materials, such as carbon black, to absorb incoherent scattering and improve the saturation of the color. For example, CN105174302A discloses a red low-angle-dependent zinc sulfide structural color pigment and its preparation method; CN103173039A Disclosed is a preparation method of a non-angle-dependent structural color material, which is doped with a small amount of black dye to increase the strength of the structural color; CN106833076A discloses a structural color Chinese painting pigment and its preparation method. suspension of true spherical nanoparticles; CN107033598A discloses a structurally colored nanocomposite film with stable color, which has ordered or disordered colloidal particle micron assemblies of various sizes and shapes; CN104073869A discloses a A method to increase the color saturation of the photonic crystal structure; however, at the same time, it inevitably reduces the brightness of the color
[0006] In addition, CN107655856A and CN106199770A disclose that thin film interference is also a commonly used method for preparing structural color, but this method requires a flat film and has relatively high technical requirements
In addition, the literature Advanced Optical Materials, 2017, 1700029 1-9 reports that the structural color obtained by constructing a Fabry-Perot resonant cavity generally has a relatively high saturation, which is due to multiple interferences in the resonant cavity to generate resonance, resulting in a more pure color , but this structure generally requires the use of heavy metals, which is not environmentally friendly, and the processing method is also very cumbersome; and the document Nano Letter, 2017, 17, 6034-6039, and the patent CN105259600A, CN105206175A reports, by constructing plasmon resonance materials to construct nano-arrays to obtain Structural color generally requires complex and expensive micro-nano processing equipment to obtain the corresponding structure, the preparation process is complicated, and the production cost is high

Method used

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  • Color generating composite film and applications thereof
  • Color generating composite film and applications thereof
  • Color generating composite film and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This example is to illustrate the color-producing composite film prepared by the present invention.

[0058] (1) Cut a 1cm×1cm silicon wafer with a 270nm-thick single-layer SiO on the surface of the silicon wafer 2 The film was placed in a mixed solution of concentrated sulfuric acid and hydrogen peroxide, heated at 200°C for two hours, washed with a large amount of water, and a clean hydrophilic SiO 2 -Si substrate; put it in a clean petri dish, pour an appropriate amount of distilled water, so that the liquid surface is covered with SiO 2 - Si substrate;

[0059] (2) Dilute the 600nm hydrophobic polystyrene beads with a mass fraction of 10wt% according to the volume ratio of the emulsion: water: ethanol = 1: 1: 2, and mix thoroughly by ultrasonic; wherein, the hydrophobic polystyrene beads The particle size is 600nm, the number of layers of the polystyrene beads is 1 layer, and the hydrophobic polystyrene is a hexagonal close-packed structure;

[0060] (3) Use a pi...

Embodiment 2

[0064] This example is to illustrate the color-producing composite film prepared by the present invention.

[0065] (1) Cut out a 5cm×2.5cm PET film, scrub it with acetone, then ultrasonically clean it in ethanol and water for about 15 minutes, and then clean it; Alternately pull SiO on the cleaned PET film by pulling method 2 / TiO 2 Membrane, the specific steps are: first according to the molar ratio TEOS (tetraethyl orthosilicate): EtOH: H 2 O: HCl: CTAB (cetyltrimethylammonium bromide) = 1:40:10:0.26:0.05 and molar ratio TiCl 4 :EtOH:H 2 O: F127 = 1: 40: 10: 10: 0.005 were prepared to obtain SiO 2 and TiO 2 sol; alternately immerse the cleaned PET in SiO 2 and TiO 2 sol for 20s, then pulled out at a constant speed of 2000μm / s and 500μm / s, and heated at 200°C for 2 hours; repeat the above steps to obtain two layers of SiO 2 -TiO 2 - PET substrate;

[0066] (2) Dilute the 600nm hydrophobic polystyrene beads with a mass fraction of 10wt% into an emulsion in a volume r...

Embodiment 3

[0071] This example is to illustrate the color-producing composite film prepared by the present invention.

[0072] (1) Cut a glass slide of 3cm×1cm, place it in a mixed solution of concentrated sulfuric acid and hydrogen peroxide, heat it at 200°C for two hours, wash it with a large amount of distilled water, and obtain a clean and hydrophilic glass slide substrate; Alternate pulling of SiO on cleaned glass slides 2 / TiO 2 Membrane, the specific steps are: first according to the molar ratio TEOS:EtOH:H 2 O:HCl:CTAB=1:40:10:0.26:0.05 and molar ratio TiCl 4 :EtOH:H 2 O: F127 = 1: 40: 10: 10: 0.005 were prepared to obtain SiO 2 and TiO 2 sol; alternately immerse cleaned slides in SiO 2 and TiO 2 sol for 20s, then pulled out at a constant speed of 2000μm / s and 500μm / s respectively, and heated at 200°C for 2 hours; repeat the above steps to obtain two cycles of SiO 2 -TiO 2 - glass substrate;

[0073] (2) treating the surface of the one-dimensional photonic crystal with ...

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Abstract

The invention relates to the field of novel color generating material preparation, and discloses a color generating composite film. The color generating composite film is a composite optical structural material, which is formed by sequentially laminating a one dimensional film and a colloid photon crystalline film on a substrate; wherein the one dimensional film is a single layer interference filmor a one dimensional photon crystalline film. The provided color generating composite film has high brightness and high saturation, and has a potential application value in fields such as anti-counterfeiting field, display industry, paint industry, and the like.

Description

technical field [0001] The invention relates to the field of preparation of new color-generating materials, in particular to a color-generating composite film and its application. Background technique [0002] Structural color exists widely in nature and life. Structural color is different from dyes. Structural color is due to the interaction between light and material microstructure, interference, scattering, diffraction and other phenomena. Therefore, structural color depends on the structure of the material. Compared with dyes, it is more stable and environmentally friendly. As long as the structure Without damage, there will be no fading. [0003] Currently, colloidal photonic crystals are often used to generate structural colors. [0004] CN103288491A discloses a blue-green photonic crystal structural color film and its preparation method; CN104418972A discloses a photonic crystal capsule pigment and its preparation method and application. Balls and co-assembled mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B15/04B32B33/00
Inventor 李明珠李畅刘笑辰周雪宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI
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