Hydrophobic structural color coating and preparation method thereof

A structural color and hydrophobic technology, applied in coatings, multi-color effect coatings, etc., can solve the problems of poor water resistance of photonic crystals, and achieve the effects of good hydrophobic effect, low preparation cost, and improved hydrophobic performance.

Active Publication Date: 2015-06-24
江门市金桥新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photonic crystal surface is modified by a low surface energy hydrophobic agent, which solves the problem of poor water resistance of the photonic crystal without destroying the orderly structure of the photonic crystal crystal

Method used

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  • Hydrophobic structural color coating and preparation method thereof
  • Hydrophobic structural color coating and preparation method thereof
  • Hydrophobic structural color coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) A monodisperse anionic triblock polymer—poly(styrene-methyl methacrylate-acrylic acid) particles was first synthesized by a one-step method. The particles have a core-shell structure and the inner layer is styrene with hydrophobic properties. , the outer layer is a hydrophilic carboxylic acid group. The emulsion containing 0.2 wt% poly(styrene-methyl methacrylate-acrylic acid) particles with an average particle size of 220 nm was left at a constant temperature of 60 °C for 32 h, and the vertical deposition method was applied to the glass. A large-area photonic crystal film was obtained on the substrate, and its scanning electron microscope photo is shown in Figure 1.

[0044](2) Use cetyltrimethylammonium bromide as emulsifier, n-pentanol as co-emulsifier, methacryloyloxyethyltrimethylammonium chloride as cationic functional monomer, azodiiso Propyl imidazoline hydrochloride is used as an initiator, the ratio of monomers (methyl methacrylate, styrene, acrylic acid,...

Embodiment 2

[0047] (1) An emulsion containing monodisperse anionic poly(styrene-methyl methacrylate-acrylic acid) particles with a concentration of 0.5 wt% and an average particle size of 250 nm was used as an inkjet printing ink in a conventional inkjet printer In the ink cartridge used, the paper substrate is printed by the printer according to the usual method. After the printing film is dried, a large-area photonic crystal film can be obtained on the paper substrate.

[0048] (2) Using acrylamide, styrene and ethyl acrylate as monomers, methacryloyloxyethyltrimethylammonium chloride as cationic functional monomer, vinyltrimethoxysilane as modifier, at 80 Stir uniformly at ℃ for 5 hours to copolymerize to obtain a cationic soap-free styrene-acrylic emulsion. The above-mentioned cationic soap-free styrene-acrylic emulsion was formulated into an aqueous solution, the content of styrene-acrylic was 8 wt%, and it was coated on the surface of the photonic crystal film prepared in step (1) b...

Embodiment 3

[0051] (1) First, monodisperse anionic triblock polymers—poly(styrene-methacrylate-methacrylic acid) particles were synthesized. The particles had a core-shell structure, and the inner layer was styrene with hydrophobic properties. Layers are carboxylic acid groups of a hydrophilic nature. An emulsion containing monodisperse poly(styrene-methacrylate-methacrylic acid) particles with an average particle size of 300 nm at a concentration of 5 wt % was placed in a container with a conventional air spray gun, and the spray gun was aimed at The glass substrate is sprayed, and a large-area photonic crystal film can be obtained on the glass substrate.

[0052] (2) Using azobisisobutyl ether hydrochloride as the initiator and cationic Y-12 as the emulsifier, combine the cationic functional monomer dimethylaminoethyl methacrylate with other monomers methyl methacrylate, Styrene, ethyl acrylate, vinyltrimethoxysilane, and hexafluoroheptyl acrylate are copolymerized to obtain a cationic...

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Abstract

The invention belongs to the field of hydrophobic structural color coating, relates to the technology of photonic crystal structural colors, and particularly relates to a method for preparing the hydrophobic structural color coating. The method comprises the following steps: assembling a photonic crystal film by using anionic nanoparticles with excellent monodispersity as a unit material; and coating the photonic crystal film with a cationic water repellent agent so that the cationic water repellent can be directly adsorbed by the anionic nanoparticles through cationic groups of the cationic water repellent, the coating is of close combination and has excellent film forming performance. Furthermore, the hydrophobic groups in the water repellent agent are directionally arranged outward the coating, and the hydrophobic performance of the coating can be improved. The preparation method is simple, low in cost, green and environment-friendly, and the prepared hydrophobic photonic crystal coating can be applied to the fields of decoration, anti-counterfeiting, cosmetic package, artware, notice boards and the like.

Description

technical field [0001] The invention belongs to the field of hydrophobic structural color coating, relates to the technology of photonic crystal structural color, in particular to a preparation method of hydrophobic structural color coating film. It can be widely used in decoration, anti-counterfeiting, cosmetic packaging, handicrafts and bulletin boards, etc. Background technique [0002] The wings of butterflies in nature have very good hydrophobic properties. Not only will water droplets not soak the wings of butterflies, they will also roll off the surface easily in a spherical shape. This excellent hydrophobic property ensures that butterflies can still survive in rainy days. Not only that, but the wings of many butterflies show brilliant colors, and the colors are often different when viewed from different directions, which shows that the colors on the surface of butterfly wings are not our common chemical colors. This kind of special physical structure to produce col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/29C09D125/14C09D133/00
CPCC09D5/29C09D125/14
Inventor 李珩徐朝华
Owner 江门市金桥新材料有限公司
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