Polymer colloid photon crystal membrane with photon band-gap position in middle infrared region and preparation method and usage thereof
A colloidal photonic crystal and photonic band gap technology, which can be used in fire-resistant coatings and other directions, can solve the problem of high cost, and achieve the effects of low cost, simple and easy method, and prevention of heat conduction.
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Embodiment 1
[0040] Example 1: Preparation of a polymer colloidal photonic crystal film with a photonic bandgap position in the mid-infrared region
[0041] At room temperature, the poly(styrene-methacrylate-acrylic acid) terpolymer emulsion with a concentration of 5wt% and a monodisperse particle size of 3 μm is evenly covered on a clean glass, silicon wafer or stainless steel plate base On the substrate, after the water in the dispersion liquid evaporates and dries up at normal temperature (15-30°C) and normal pressure, the monodisperse large-particle-diameter polymer latex particles are piled up on the substrate in a face-centered cubic manner, and form a periodic arrangement. Three-dimensional photonic crystal film. The photonic bandgap position of the prepared colloidal photonic crystal film involves 6-12 μm (as shown in FIG. 2 ). The SEM photo is shown in Fig. 1 .
Embodiment 2
[0042] Example 2: Preparation of a polymer colloidal photonic crystal film with a photonic bandgap position in the mid-infrared region
[0043] According to the method of Example 1, a poly(styrene-butyl acrylate-acrylic acid) terpolymer latex particle emulsion with a concentration of 30 wt% and a monodisperse particle size of 2.5 μm was assembled into a photonic crystal film. The photonic bandgap position of the prepared colloidal photonic crystal film involves 6-12 μm (as shown in FIG. 3 ).
Embodiment 3
[0044] Example 3: Preparation of a polymer colloidal photonic crystal film with a photonic bandgap position in the mid-infrared region
[0045] According to the method of Example 1, a poly(methylstyrene-butyl acrylate-acrylic acid) terpolymer latex particle emulsion with a concentration of 15 wt% and a monodisperse particle size of 2.8 μm was assembled into a photonic crystal film. The photonic bandgap position of the prepared colloidal photonic crystal film involves 8-12 μm (as shown in FIG. 4 ).
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