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Photon crystal membrane of polymer colloid with controllable wet ability, prepartion method and application

A technology of colloidal photonic crystals and polymer latex, applied in cosmetic preparations, dressing preparations, cosmetics, etc.

Active Publication Date: 2007-02-21
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has not been reported in the literature or patent

Method used

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  • Photon crystal membrane of polymer colloid with controllable wet ability, prepartion method and application
  • Photon crystal membrane of polymer colloid with controllable wet ability, prepartion method and application
  • Photon crystal membrane of polymer colloid with controllable wet ability, prepartion method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Example 1 Preparation of polymer colloidal photonic crystal film with controllable wettability

[0063] At room temperature, the monodisperse latex particles (particle size of 170 nm, with obvious particle diameter of 170 nm) of the terpolymer poly(styrene-methyl methacrylate-acrylic acid) prepared by the method described in the aforementioned patent application were prepared at a concentration of 5 wt %. Core-shell structure, the core layer is hard polystyrene, the shell layer is composed of soft and elastic polymethyl methacrylate and polyacrylic acid, and the shell layer thickness of the monodisperse polymer latex particles is 20-25 nm. figure 1 ) emulsion, evenly cover the clean glass, silicon wafer or stainless steel substrate, put the substrate of the coating film at a certain temperature (35 ~ 90 ℃), and after the water in the dispersion is evaporated and dried, it will form a periodic The ordered three-dimensional photonic crystal film is composed of monodispers...

Embodiment 2

[0065] Depending on the evaporation temperature of the dispersion water, the wettability results of the prepared films are as follows figure 2 shown. At room temperature, the monodispersed latex particle emulsion of the terpolymer poly(styrene-methyl methacrylate-acrylic acid) prepared by the method described in the aforementioned patent application with a concentration of 10 wt% was uniformly covered on a clean glass base. On the material, the particle sizes of the polymer latex particles are 100nm, 150nm, 170nm, and 230nm respectively (the shell thickness of the monodisperse polymer latex particles is 20-25nm), and the water temperature is 50°C, 60°C, 70°C, 80°C. ℃, after volatilizing to dryness at 90℃, the change of the contact angle of the film assembled on the glass substrate is given by figure 2 It can be seen that with the increase of assembly temperature, the contact angle of the membrane gradually increases, and the wettability of membranes with different particle ...

Embodiment 3

[0068] Example 3: Waterproof coating applied to UV or visible region

[0069] According to the method of Example 1, the monodisperse latex particles (particle size of the terpolymer poly(styrene-methyl methacrylate-acrylic acid) prepared by the method described in the aforementioned patent application with a concentration of 15 wt% 100~300nm, with obvious core-shell structure, the core layer is hard polystyrene, the shell layer is composed of soft and elastic polymethyl methacrylate and polyacrylic acid, the shell layer of monodisperse polymer latex particles 20-25nm thick) emulsion, which is evenly covered on the clean stainless steel substrate, and the substrate of the coating film is placed at a certain temperature (70°C or above), and after the water in the dispersion is evaporated and dried, it will form a periodic An ordered three-dimensional photonic crystal film that can be used as a waterproof coating in the ultraviolet or visible region. The waterproof performance o...

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Abstract

This invention relates to a method for preparing infiltration-controllable polymer colloidal protonic crystal film and its application in waterproof coating. The method comprises: covering a flat substrate with an emulsion of mono-dispersed polymer latex particles with hard core / soft shell structure, and volatilizing the liquid to obtain the film formed from the mono-dispersed polymer latex particles. The mono-dispersed polymer latex particles with diameters of 100-300 nm can realize phase inversion at 30-90 deg.C. The thickness of the shell is 20-50 nm; while the polydispersity is lower than 0.005. The film has compact structure, and can be used as UV-resistant and waterproof color coating material.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of colloidal photonic crystal films, and particularly relates to a polymer colloidal photonic crystal film with controllable wettability, a preparation method of the polymer colloidal photonic crystal film with controllable wettability, and a method for preparing the polymer colloidal photonic crystal film with controllable wettability. layer usage. Background technique [0002] Surface wettability of solid materials is a very important property. The lotus leaf in nature realizes self-cleaning and self-protection according to the superhydrophobicity of the surface. Influenced by the micro-nano composite structure on the surface of the lotus leaf, many methods have been adopted to adjust the wettability of the surface of solid materials. Such as the sol-gel method, or the surface roughening of low surface energy materials, or the use of die extrusion to achieve phase separation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L25/04C08L25/06C09D125/04C09D125/06A61K8/81A61Q1/02
Inventor 王京霞宋延林梁杰刘必前江雷
Owner INST OF CHEM CHINESE ACAD OF SCI
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