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Polymer colloid photon crystal film with photon band-gap position at near infrared region and its preparing method and use

A colloidal photonic crystal and photonic band gap technology, which can be used in reflection/signal coatings, etc., can solve the problem of high cost, and achieve the effects of simple equipment, simple preparation process, and easy control of size and shape.

Inactive Publication Date: 2009-11-04
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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But this method is more costly

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  • Polymer colloid photon crystal film with photon band-gap position at near infrared region and its preparing method and use
  • Polymer colloid photon crystal film with photon band-gap position at near infrared region and its preparing method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: Preparation of monodisperse large particle size polymer latex particles

[0047] The monomer mixture methyl methacrylate (1 g), styrene (19 g), and methacrylic acid (1 g), pH buffer ammonium bicarbonate (0.2 g) and sodium chloride (0.2 g) were dispersed in In water (95 mL), the resulting mixed system was stirred and mixed at 350 rpm, and heated to 70°C. Add 15 milliliters of ammonium persulfate (0.2 gram is dissolved in 25 milliliters of water) aqueous solution and start to react, react and add 5 milliliters of ammonium persulfate aqueous solution again after 2 hours, all the other ammonium persulfate aqueous solutions add after continuing reaction 2 hours, After the reaction continued for 2 hours, the temperature was raised to 80° C. and the reaction was completed for another 2 hours. Finally, the polydispersity index is less than or equal to 0.005, and the monodisperse large-diameter polymer latex particles with a particle diameter range of 480 nm are o...

Embodiment 2

[0049] Embodiment 2: Preparation of monodisperse large particle size polymer latex particles

[0050] The monomer mixture vinyl acetate (0.5 g), butyl acrylate (0.5 g), methyl styrene (19 g), and acrylic acid (1 g), pH buffer sodium bicarbonate (0.1 g) and ammonium bicarbonate (0.1 g) and sodium chloride (0.2 g) were dispersed in water (95 mL), and the resulting mixed system was stirred and mixed at 300 rpm, and heated to 70°C. Add 15 milliliters of initiator (obtained by dissolving 0.2 gram of ammonium persulfate and 0.1 gram of sodium persulfate in 25 milliliters of water) aqueous solution to start the reaction, add 5 milliliters of ammonium persulfate aqueous solution after reacting for 2 hours, and the remaining persulfate The ammonium aqueous solution was added after the reaction was continued for 2 hours, and after the reaction was continued for 2 hours, the temperature was raised to 80° C. and the reaction was completed for another 2 hours. Finally, the polydispersity ...

Embodiment 3

[0052] Embodiment 3: Preparation of monodisperse large particle size polymer latex particles

[0053] The monomer mixture isobutyl methacrylate (1 g), styrene (19 g), acrylic acid (0.5 g) and acrylamide (0.5 g), pH buffer sodium bicarbonate (0.1 g) and ammonium hydrogen phosphate (0.1 g) and sodium chloride (0.2 g) were dispersed in water (95 mL), and the resulting mixed system was stirred and mixed at 400 rpm, and heated to 70°C. Add 15 milliliters of ammonium persulfate (0.2 gram is dissolved in 25 milliliters of water) aqueous solution and start to react, react and add 5 milliliters of ammonium persulfate aqueous solution again after 2 hours, all the other ammonium persulfate aqueous solutions add after continuing reaction 2 hours, After the reaction continued for 2 hours, the temperature was raised to 80° C. and the reaction was completed for another 2 hours. Finally, monodisperse polymer latex particles with a polydispersity index less than or equal to 0.005 and a partic...

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Abstract

The invention belongs to the technical field of preparation of colloidal photonic crystal films, and in particular relates to a polymer colloidal photonic crystal film with a large photonic bandgap in the near-infrared region, a preparation method and application thereof. Evenly cover the monodisperse large particle size polymer latex particle emulsion on the flat substrate, and after the dispersion solvent water volatilizes, a periodic arrangement of monodisperse large particle size polymer latex particles stacked in face-centered cubic order is obtained. The three-dimensional photonic crystal film, the monodisperse large particle size polymer latex particles are formed by the aggregation of several hard core-soft shell structure latex particles in the polymerization process; the particle size range of the monodisperse large particle size polymer latex particles It is 400-1200nm, and the polydispersity index is less than or equal to 0.005. According to the particle size of the monodisperse large-diameter polymer emulsion, the photonic bandgap of the latex photonic crystal film obtained in the present invention can be distributed in different bands of 800-3000nm in the near-infrared region. Latex photonic crystal film can be used as anti-radiation thermal insulation coating.

Description

technical field [0001] The invention belongs to the technical field of preparation of colloidal photonic crystal films, in particular to a polymer colloidal photonic crystal film with a large photonic bandgap in the near-infrared region and a preparation method thereof, as well as its application in anti-radiation coatings; One-step polymerization method to prepare monodisperse polymer latex particles with large particle size. Background technique [0002] Colloidal photonic crystal materials refract or diffract light with a periodic structure formed by the regular arrangement of monodisperse latex particles to achieve special regulation of light. Depending on the size of the periodic arrangement, the wavelength of the modulated light is different. Correspondingly prepared colloidal crystals have different application fields. In the usual patent literature, colloidal photonic crystal films are mainly used in filters (such as CN: 01105105.1, CN: 98110990.X), photoelectric s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08F2/22C08F212/08C08F2/38C09D5/33
Inventor 梁杰王京霞宋延林江雷刘必前
Owner INST OF CHEM CHINESE ACAD OF SCI
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