A ps@tio with a non-iridescent effect 2 Structural color thin film and its preparation method and application

A technology of structural color and effect, applied in coatings and other directions, can solve the problems of large specific surface area of ​​nano-TiO2, insufficient performance, wide particle size distribution, etc., achieve low requirements for substrate and coating environment, and reduce iridescent effect. , the effect of color stability

Active Publication Date: 2022-03-11
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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  • A ps@tio with a non-iridescent effect <sub>2</sub> Structural color thin film and its preparation method and application
  • A ps@tio with a non-iridescent effect <sub>2</sub> Structural color thin film and its preparation method and application
  • A ps@tio with a non-iridescent effect <sub>2</sub> Structural color thin film and its preparation method and application

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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: styrene is purified, and the purified styrene, α-methacrylic acid and deionized water are added to a three-necked round-bottomed flask, and magnetically stirred for more than 30 minutes to make the solution mix evenly, 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...

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, and react at a constant temperature of 80°C for 8h to 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 the mixture of 80mL ethanol and 20mL acetonitrile, 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 present invention provides a PS@TiO with non-iridescent effect 2 Structural chromatic film and its preparation method and application, first adopts soap-free polymerization and mixed solvent method to prepare PS@TiO with uniform particle size and monodispersity 2 Microspheres, good sphericity, TiO with a diameter of about 8nm 2 Nanoparticles are uniformly coated on the surface of PS microspheres to form TiO with a thickness of about 10nm 2 Shell. Mix it with carbon black material evenly and spray it with a spray gun to get a structural color film. The color of the thin film of the invention does not change with the change of the viewing angle, the color is stable, and it is not easy to fade, has broad application prospects in the field of color display, and expands the types of amorphous photonic crystal structural color thin film materials. The preparation method of the present invention is simple, repeatable, environmentally friendly, safe and non-toxic; the spraying method has low requirements on the substrate and coating environment, and is suitable for constructing a structurally colored film on the surface of various materials, and the spraying method can be prepared in a large area, which is easy Realize industrialization.

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 Patents(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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