Preparation method for patterned photonic crystal structural coloration material with stable structure and bright color

A technology of photonic crystals and stable structures, applied in optics, optical components, instruments, etc., can solve the problems of reduced refractive index difference of photonic crystal structures, dark color, and reduced color saturation of photonic crystal structures, etc., to achieve bright structural colors, Strong structural stability, high stability effect

Active Publication Date: 2018-12-18
浙江中蝶坊新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the above method enhances the stability of the photonic crystal, it usually obviously reduces the saturation of the photonic crystal structure color, making the color dark. The reason is that the filling of the photonic crystal structure with a polymer binder or soft polymer microsphere , and the refractive index of these filled polymers is very close to that of commonly used nano-microspheres (silicon dioxide, polystyrene, etc.), which leads to a decrease in the refractive index difference of the photonic crystal structure, In turn, the saturation of the photonic crystal structural color is reduced
At the same time, conventional photonic crystal preparation methods are difficult to achieve patterned photonic crystal structural color

Method used

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  • Preparation method for patterned photonic crystal structural coloration material with stable structure and bright color
  • Preparation method for patterned photonic crystal structural coloration material with stable structure and bright color
  • Preparation method for patterned photonic crystal structural coloration material with stable structure and bright color

Examples

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Embodiment 1

[0033] A method for preparing a patterned photonic crystal structure chromogenic material with both stable structure and bright color, the specific steps of the method are:

[0034] (1) Preparation: Put a piece of circular plain polyester fabric with a diameter of 4 cm into an ultrasonic cleaner for cleaning for 5 minutes;

[0035] (2) Dispersing hollow silica microspheres with an inner core diameter of 400nm and a shell thickness of 100nm in water to form a colloidal dispersion with a concentration of 0.2wt%;

[0036] (3) After 10 hours of self-assembly in a constant temperature and humidity chamber at a temperature of 60 degrees Celsius and a relative humidity of 60% by using the gravity sedimentation self-assembly method, a hollow silica photonic crystal structure can be obtained on the surface of the polyester fabric substrate;

[0037] (4) Mix polyurethane diacrylate and hydroxyethyl acrylate at a mass ratio of 20:1, and then add 3% diphenyl (2,4,6-trimethylbenzoyl) phosp...

Embodiment 2

[0039] A method for preparing a patterned photonic crystal structure chromogenic material with both stable structure and bright color, the specific steps of the method are:

[0040] (1) Preparation: Put a piece of circular plain silk fabric with a diameter of 4 cm into an ultrasonic cleaning machine for cleaning for 5 minutes;

[0041] (2) Dispersing hollow silica microspheres with a core diameter of 240nm and a shell thickness of 17nm in water to form a colloidal dispersion with a concentration of 5wt%;

[0042] (3) After self-assembling for 20 hours in a constant temperature and humidity box at a temperature of 60 degrees Celsius and a relative humidity of 60% by using the vertical layered self-assembly method, a hollow silicon dioxide photonic crystal structure can be obtained on the surface of the fabric substrate;

[0043] (4) Mix polyurethane diacrylate and hydroxyethyl methacrylate at a mass ratio of 15:1, and then add 0.2% diphenyl (2,4,6-trimethylbenzoyl) Phosphine o...

Embodiment 3

[0047] A method for preparing a patterned photonic crystal structure chromogenic material with both stable structure and bright color, the specific steps of the method are:

[0048] (1) Preparation: Put a piece of circular plain nylon fabric with a diameter of 4 cm into an ultrasonic cleaner for 5 minutes;

[0049] (2) Dispersing hollow silica microspheres with an inner core diameter of 100nm and a shell thickness of 5nm in water to form a colloidal dispersion with a concentration of 10wt%;

[0050] (3) Use the vertical pulling method to vertically immerse the fabric into the colloidal dispersion liquid and slowly pull it to the liquid surface at a speed of 2mm / s and then infiltrate it. After 50 cycles, hollow silica photons can be obtained on the surface of the fabric substrate. Crystal structure.

[0051] (4) Mix polyurethane diacrylate and polyethylene glycol diacrylate at a mass ratio of 10:1, and then add 4% diphenyl (2,4,6-trimethylbenzoyl ) phosphine oxide as a photoi...

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Abstract

The invention relates to a preparation method for a patterned photonic crystal structural coloration material with stable structure and bright color, and belongs to the field of preparation of structural coloration materials. The method comprises the following steps of (1) preparing a hollow nano-microsphere colloidal dispersion liquid; (2) constructing a hollow nano-microsphere photonic crystal structure on the surface of a base material by adopting a colloidal microsphere self-assembly method or a spraying method; (3) preparing curable ink, performing selective application processing on thehollow nano-microsphere photonic crystal structure, and curing the ink through light or heat, wherein the curable ink is light-cured or heat-cured ink; and (4) removing hollow nano-microsphere photonic crystals of an uncured part through ultrasonic washing or soaping. According to the method, the photonic crystals are self-assembled by adopting hollow nano-microspheres, the curable ink is preparedand the hollow nano-microsphere photonic crystal structure is subjected to the selective application processing, so that the high-stability and high-saturation patterned photonic crystal structure coloration material is obtained.

Description

technical field [0001] The invention relates to a photonic crystal structure chromogenic material, in particular to a method for preparing a patterned photonic crystal structural chromogenic material with both structural stability and bright colors, and belongs to the field of structural chromogenic material preparation. Background technique [0002] Different from the color-producing mechanism of traditional pigments such as dyes or pigments, the generation of structural color is due to physical effects such as diffraction, interference, and scattering of the object's special micro-nano structure and visible light. Compared with pigment coloring, the processing process of structural coloring has lower energy consumption and less pollution, and is an environmentally friendly green coloring method; structural color usually also has bright, bright, flexible and changeable coloring effects, with metallic Gloss, along with the iridescence effect (the phenomenon in which color ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/00
CPCG02B1/005
Inventor 邵建中李义臣王晓辉周岚柴丽琴
Owner 浙江中蝶坊新材料科技股份有限公司
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