A colloid photonic crystal having high contrast and no crack and a preparing method thereof

A colloidal photonic crystal, high-contrast technology, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve the problem that the interaction force of monodisperse emulsion particles cannot be enhanced, particle cracking cannot be solved, and large-area crack-free preparation cannot be achieved. Photonic crystal and other problems, to achieve the effect of reducing color interference, mild preparation conditions, and enhancing interaction force

Inactive Publication Date: 2018-11-30
SOUTH CHINA UNIV OF TECH
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, squid juice is also in the form of particles, which cannot enhance the interaction force between monodisperse latex particles, nor can it solve the problem of cracking caused by stress shrinkage between particles. Therefore, although the addition of squid juice increases the color contrast, it cannot be prepared. area crack-free photonic crystal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A colloid photonic crystal having high contrast and no crack and a preparing method thereof
  • A colloid photonic crystal having high contrast and no crack and a preparing method thereof
  • A colloid photonic crystal having high contrast and no crack and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1: In terms of parts by mass, mix 15 parts of styrene, 2 parts of ammonium persulfate, and 100 parts of water, stir to form a uniform solution, pass nitrogen to remove oxygen in the system, and place in a 75°C water bath to initiate polymerization ; After reacting for 10 hours, the reaction product was freeze-dried to obtain monodisperse polystyrene latex particles with a particle size of 210 nm;

[0043] Step 2: ultrasonically disperse monodisperse polystyrene latex particles with a particle size of 210 nm in water to form a monodisperse polystyrene emulsion with a mass fraction of 13 wt %;

[0044] Step 3: ultrasonically dispersing graphene in water to form a graphene dispersion with a mass fraction of 0.5 wt %;

[0045] Step 4: Mix the monodisperse polystyrene emulsion and the graphene dispersion with a particle size of 210nm uniformly at a volume ratio of 1.5:1 to obtain a mixed solution of the 210nm monodisperse polystyrene emulsion and the graphene dispersion...

Embodiment 2

[0054] Step 1: In terms of parts by mass, mix 15 parts of styrene, 3 parts of acrylic acid, 3 parts of sodium persulfate, and 100 parts of water, stir to form a uniform solution, pass nitrogen to remove oxygen in the system, and place at 80°C Initiate polymerization in a water bath; react for 12 hours, freeze-dry the reaction product to obtain monodisperse polystyrene-acrylic acid latex particles with a particle size of 250 nm;

[0055] Step 2: ultrasonically disperse monodisperse polystyrene-acrylic latex particles with a particle size of 250 nm in ethanol to form an emulsion with a mass fraction of 10 wt %;

[0056] Step 3: ultrasonically dispersing carbon black in water to form a dispersion with a mass fraction of 1 wt %;

[0057] Step 4: Mix the monodisperse polystyrene-acrylic emulsion and the carbon black dispersion evenly at a volume ratio of 1:1 to obtain a mixture of 250nm monodisperse polystyrene-acrylic emulsion and carbon black dispersion. Apply it on a glass shee...

Embodiment 3

[0060] Step 1: In terms of parts by mass, mix 18 parts of styrene, 3 parts of methacrylic acid, 5 parts of potassium persulfate and 100 parts of ethanol, stir to form a uniform solution, pass nitrogen to remove the oxygen in the system, place Initiate the polymerization reaction in a water bath at 60°C; react for 15 hours, and freeze-dry the reaction product to obtain monodisperse polystyrene-methacrylic acid latex particles with a particle size of 240 nm;

[0061] Step 2: ultrasonically disperse monodisperse polystyrene-methacrylic acid latex particles with a particle size of 240 nm in ethanol to form an emulsion with a mass fraction of 15 wt %;

[0062] Step 3: ultrasonically dispersing the carbon nanotubes in ethanol to form a dispersion with a mass fraction of 2 wt %;

[0063] Step 4: Mix the monodisperse polystyrene-methacrylic acid emulsion and the carbon nanotube dispersion evenly at a volume ratio of 1:2, drop-coat it on the white filter membrane, and dry it in an oven...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

A colloid photonic crystal having high contrast and no crack and a preparing method thereof are disclosed. The method includes mixing a monomer, an initiator and water; stirring the mixture to form auniform solution; feeding nitrogen to remove oxygen in the system; initiating polymerization in a water bath having a temperature of 60-100 DEG C under stirring to prepare monodispersed latex particles; subjecting the monodispersed latex particles to ultrasonic dispersion into a solvent to form a monodispersed emulsion; dispersing a functional auxiliary film forming compound into a solvent to forma stable dispersion; fully mixing the monodispersed emulsion and the dispersion; subjecting the mixture to drop coating onto a substrate; and performing self-assembling to obtain the colloid photoniccrystal having high area, high contrast and no surface crack. The prepared colloid photonic crystal has characteristics of high area, high contrast, no surface crack, and the like. The method is simple, rapid and low in cost, the functional auxiliary film forming compound is nontoxic and harmless to environment and pollution-free, and the method is an efficient rapid preparing method for the colloid photonic crystal having high contrast and no crack.

Description

technical field [0001] The invention relates to the field of colloidal photonic crystals, in particular to a high-contrast, crack-free colloidal photonic crystal and a preparation method thereof. Background technique [0002] The concept of "photonic crystal" was first proposed in 1987. Photonic crystals are composed of periodic dielectric structures or their reverse structures arranged in two-dimensional or three-dimensional directions. Since this periodic dielectric material has the ability to control light waves on the scale of light waves, it is very similar to Because of the crystal's control of electrons, it is called a photonic crystal. Utilizing the property that photonic crystals can reflect light waves, its structure can be designed so that it can reflect light of corresponding wavelengths in the visible light range and show brilliant colors. The production of this color does not require pigments and dyes, and the reflectivity is high. Never Fading is a color pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08F112/08C08F212/08C08F220/06C08F220/14C08F220/18C30B7/14
CPCC08F112/08C08F212/08C30B7/14C08F220/1804
Inventor 张心亚陈晓菲宋刘俊
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap