PS@TiO2 structured color film with non-iridescent effect as well as preparation method and application thereof

A technology of structural color and effect, applied in the direction of coating, etc., can solve the problems of large specific surface area of ​​nano-TiO2, insufficient performance, and many space bonds on the surface, so as to achieve low requirements on the substrate and coating environment, and reduce the iridescent effect , reducing the effect of orderliness

Active Publication Date: 2019-06-25
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

But nano TiO 2 The specific surface area is large, and there are many empty bonds on the surface, which makes it easy to agglomerate in the process of preparation and application, and its excellent performance cannot be fully exerted.
In the existing technology, the particle size can be controlled in the range of 150-380nm TiO 2 There are many difficulties in the preparation of microspheres, such as wide particle size distribution, inhomogeneous size, and poor dispersion, which limit their use as photonic crystal structural color materials.
[0006] So far, there is no literature on spraying carbon-doped TiO 2 The preparation of short-range ordered structural color thin films by wrapping PS core-shell microsphere solutions has been reported

Method used

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  • PS@TiO2 structured color film with non-iridescent effect as well as preparation method and application thereof
  • PS@TiO2 structured color film with non-iridescent effect as well as preparation method and application thereof
  • PS@TiO2 structured color film with non-iridescent effect as well as preparation method and application thereof

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preparation example Construction

[0034] PS@TiO with non-iridescent effect according to the present invention 2 The preparation method of structural color thin film, comprises the following steps:

[0035]1) Preparation of modified PS colloidal microsphere emulsion: Purification of styrene, adding the purified styrene, α-methacrylic acid and deionized water into a three-neck round bottom flask, magnetically stirring for more than 30min to make the solution evenly mixed, and then Put it in an oil bath at 75-95°C, stir it magnetically for 30-60 minutes, inject potassium persulfate solution, and react under constant temperature to obtain PS microsphere emulsion; the ratio of styrene, α-methacrylic acid and deionized water is: (7-14) mL: (0.5-1) mL: 90 mL.

[0036] 2) Encapsulated TiO 2 Shell structure: the obtained PS microsphere emulsion is dispersed in the mixed solution of ethanol and acetonitrile, which is recorded as liquid A; butyl titanate (TBOT) is dissolved in the mixed liquid of ethanol and acetonitri...

Embodiment 1

[0042] A PS@TiO with non-iridescent effect 2 The preparation method of structural color thin film, comprises the following steps:

[0043] 1) Preparation of modified PS colloidal microsphere emulsion: Purification of styrene, take 14mL of purified styrene solution, 1mL of α-methacrylic acid, and 90mL of deionized water in a three-necked round-bottomed flask, stir magnetically for 60min, and mix the solution , placed in an oil bath at 95°C, stirred magnetically for 60 minutes, injected with a concentration of 1.7g / mL, 10mL of potassium persulfate solution, and reacted at a constant temperature of 95°C for 9 hours to obtain a modified PS colloidal microsphere emulsion;

[0044] 2) Encapsulated TiO 2 Shell structure: Take one-third of the obtained modified PS colloidal microsphere emulsion, disperse it in a mixture of 80mL ethanol and 20mL acetonitrile, and record it as liquid A, dissolve 3mL butyl titanate (TBOT) in 16mL ethanol and 4mL In the mixed solution of acetonitrile, i...

Embodiment 2

[0047] A PS@TiO with non-iridescent effect 2 The preparation method of structural color thin film, comprises the following steps:

[0048] 1) Preparation of modified PS colloidal microsphere emulsion: Purification of styrene, take 10mL of purified styrene solution, 0.6mL of α-methacrylic acid, and 90mL of deionized water in a three-necked round-bottomed flask, stir magnetically for 30min, and make the solution Mix, put in an oil bath at 80°C, stir magnetically for 50min, inject 10mL of potassium persulfate solution at a concentration of 1.7g / mL, react at a constant temperature of 80°C for 8h, and obtain a modified PS colloidal microsphere emulsion;

[0049] 2) Encapsulated TiO 2 Shell structure: Take one-third of the obtained modified PS colloidal microsphere emulsion, disperse it in a mixture of 80mL ethanol and 20mL acetonitrile, and record it as liquid A, dissolve 2.0mL butyl titanate (TBOT) in 16mL ethanol and The mixture of 4mL acetonitrile is denoted as B solution; slo...

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Abstract

The invention provides a PS@TiO2 structured color film with a non-iridescent effect as well as a preparation method and application thereof, and the preparation method comprises: uniform particle sizeand monodisperse PS@TiO2 microspheres are firstly prepared by a soap-free liquid polymerization and mixed solvent method, the surface of the PS microspheres is coated with good sphericity degree TiO2nanoparticles with a diameter of about 8 nm uniformly, and a TiO2 shell layer having a thickness of about 10 nm is formed; the TiO2 shell layer is evenly mixed with a carbon black material to obtaina mixture, and the structured color film is obtained by spraying the mixture with a spray gun. The color of the film does not change with the change of the viewing angle, the color is stable to display and is not easy to fade; and the film has broad application prospects in the field of color display, and expands the types of amorphous photonic crystal structure color film materials. The preparation method has the advantages of simple preparation method, strong repeatability, environmental protection safety and non-toxicity; the spraying method has low requirements on a substrate and film coating environment, and is suitable for constructing the structured color film which does not change in color with the change of the viewing angle on various material surfaces, the spraying method can beused for preparing in a large area, and industrialization is easy to realize.

Description

technical field [0001] The invention belongs to the technical field of preparation of structural color materials, in particular to a PS@TiO with non-iridescent effect 2 Structural color thin film and its preparation method and application. Background technique [0002] The rich color world gives people a beautiful visual experience. Color can be divided into chemical color and structural color according to the coloring mechanism. Chemical color refers to the use of chemical coloring agents. Although the chemical substances are colorful and rich, they are easy to cause problems such as resource destruction and environmental pollution. Structural color presents color through optical processes such as grating diffraction, scattering, and interference between the special organizational structure of the object itself and white light. It has many advantages, such as bright colors, never fading, environmental friendliness, short preparation cycle, etc., and has great application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/00C09D125/08C09D7/61C08F212/08C08F220/06
Inventor 王芬薛雨罗宏杰朱建锋王莹赵婷方媛赵旭
Owner SHAANXI UNIV OF SCI & TECH
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