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Transparent heat-insulating and anti-ultraviolet film based on photonic quasicrystal material and preparation method thereof

A photonic quasicrystal, anti-ultraviolet technology, applied in the direction of film/sheet release coating, film/sheet adhesive, coating, etc. The effect of excellent transparent heat insulation and UV protection performance

Active Publication Date: 2022-04-12
FUDAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with coated heat-reflective glass (strong reflection, light pollution) and vacuum glass (high sealing requirements, expensive), glass film mainly prepares infrared and ultraviolet shielding materials as films and sticks them on the glass surface. This technology can solve the problem well. Glass heat insulation and ultraviolet shielding problems, and flexible application, but the current cost of this type of film is still high, it is difficult to be widely used

Method used

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  • Transparent heat-insulating and anti-ultraviolet film based on photonic quasicrystal material and preparation method thereof
  • Transparent heat-insulating and anti-ultraviolet film based on photonic quasicrystal material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A transparent heat-insulating and anti-ultraviolet film based on photonic quasicrystal materials, such as figure 1 As shown, including a transparent substrate layer, a photonic quasicrystal functional film layer, an adhesive layer and a peelable protective layer;

[0043] Among them, the transparent substrate is a PET film with a thickness of 150 microns; the photonic quasicrystal functional film layer is a photonic crystal film composed of core-shell microspheres with a particle size of 280 nm and cesium tungsten bronze particles with a particle size of 90 nm, with a thickness of 150 nm. microns;

[0044] The photonic quasicrystal functional film layer is coated on the transparent PET substrate by the method of roll coating, and then the core microspheres and functional nanoparticles in the regular film are uniaxially pressed to obtain the photonic quasicrystal functional film layer;

[0045] Then, a polyacrylate adhesive layer is coated on the top of the photonic qua...

Embodiment 2

[0058] The structure of the described transparent heat-insulating and anti-ultraviolet film is the same as that of Example 1, and the specific preparation process is as follows:

[0059] (1) Preparation of monodisperse core-shell polymer emulsion

[0060] The same experimental procedure as in Example 1 was adopted. In the formula of the first step, the addition amount of sodium lauryl sulfate was changed to 1.80 g to prepare the seed emulsion, and then the core-shell emulsion was obtained by step-by-step polymerization, and the final product polymer microspheres The size is 252nm, and the polydispersity index PDI of the microspheres is 0.12;

[0061] (2) Preparation of prefabricated emulsion dispersions

[0062] The same experimental procedure as in Example 1 was used to prepare functional nanoparticle aqueous slurry, and then 50 g of infrared functional nanoparticle slurry was mixed with 1000 g of core-shell microsphere emulsion, and stirred evenly to obtain a photonic quasi...

Embodiment 3

[0067] The structure of the described transparent heat-insulating and anti-ultraviolet film is the same as that of Example 1, and the specific preparation process is as follows:

[0068] (1) Preparation of monodisperse core-shell polymer emulsion

[0069] Using the same experimental procedure as Example 1, in the first step formula, the addition amount of sodium lauryl sulfate was changed to 2.10 grams to prepare the seed emulsion, and then the core-shell emulsion was obtained by step-by-step polymerization. The size of the polymer microspheres was is 231nm, and the polydispersity index PDI of the microspheres is 0.10;

[0070] (2) Preparation of prefabricated emulsion dispersions

[0071] The same experimental procedure as in Example 1 was used to prepare functional nanoparticle aqueous slurry, and then 60 g of infrared functional nanoparticle slurry was mixed with 1000 g of core-shell microsphere emulsion, and stirred evenly to obtain a photonic quasicrystal functional thin...

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Abstract

The invention belongs to the technical field of film materials, in particular to a transparent heat-insulating and anti-ultraviolet composite film based on a photonic quasi-crystal material and a preparation method thereof. The structure of the composite film of the present invention is a transparent base layer, a photonic quasicrystal functional film layer, an adhesive layer and a peelable layer; the photonic quasicrystal film is composed of polymer core-shell structure microspheres arranged in three-dimensional order and infrared functional nanoparticles through Formed by a specific process, it has tunable structural color and optical transparency. The structural color, transparency, and wavelength range of blocking ultraviolet and infrared can be adjusted by adjusting the core microsphere size, shell thickness, refractive index and infrared functional nanoparticle content of the core-shell microspheres, and the ultraviolet and infrared wavelength range can also be controlled by adjusting the thickness. and infrared blocking efficiency. The composite film formed by the invention has high ultraviolet light blocking efficiency, high visible light transmittance, good heat insulation effect, excellent transparent heat insulation, anti-ultraviolet and explosion-proof performance; it can be used for energy-saving and explosion-proof of automobiles and architectural glass.

Description

technical field [0001] The invention belongs to the technical field of film materials, in particular to a transparent heat-insulating and anti-ultraviolet film and a preparation method thereof. Background technique [0002] For functional reasons such as aesthetics and effective use of sunlight, glass is increasingly used in the construction field and the automotive industry, but sometimes its good light transmittance also makes the sunlight too strong, which brings a series of problems. We know that the sunlight reaching the earth's surface is mainly composed of infrared light, visible light and ultraviolet light, among which, the radiant heat is mainly concentrated in the visible light region and the infrared light region. In addition, ultraviolet light has high energy, a moderate amount of ultraviolet light is good for health, but too strong ultraviolet radiation can easily damage the eyes and skin and induce diseases; ultraviolet radiation is also the biggest cause of ou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/25C09J7/50C08J7/04C09D7/61C09D151/00C08L67/02
CPCC09J7/255C08J7/0427C09D7/61C09D151/003C08J2367/02C08J2451/00C08K2201/011C08K2003/3036C09J2467/006C09J2433/00C08K3/22C08K3/30
Inventor 汪长春
Owner FUDAN UNIV
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