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A Two-Dimensional Ordered Porous Nano-Silicon Oxide Anti-reflection Film with Hydrophobic Effect

A technology of porous silica and silica, applied in the direction of coating, etc., can solve the problems of easy attenuation of transmittance, single anti-reflection angle, and narrow wavelength range of high-efficiency anti-reflection

Active Publication Date: 2021-06-25
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Monolayer porous SiO prepared by sol-gel method 2 Anti-reflection film has the advantages of high porosity, adjustable refractive index, high transmittance, etc., but its disadvantages are that the transmittance is easy to attenuate, the efficient anti-reflection wavelength range is narrow, and the anti-reflection angle is relatively single, etc., which need further research Improvement

Method used

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  • A Two-Dimensional Ordered Porous Nano-Silicon Oxide Anti-reflection Film with Hydrophobic Effect
  • A Two-Dimensional Ordered Porous Nano-Silicon Oxide Anti-reflection Film with Hydrophobic Effect
  • A Two-Dimensional Ordered Porous Nano-Silicon Oxide Anti-reflection Film with Hydrophobic Effect

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preparation example Construction

[0060] Preparation of Porous Silica Nano Membrane Material

[0061] The preparation method of porous silicon dioxide nano-membrane material of the present invention comprises the following steps:

[0062] (1) providing a suspension of polymer microspheres and an organic-inorganic silicon source;

[0063] In the presence of an alkaline reagent (the alkaline reagent is usually ammonia water), the polymer microspheres react with an organic-inorganic silicon source to obtain a silica-coated polymer microsphere with a particle size of 250-500 nm. spherical core-shell particles;

[0064] Usually, the polymer microspheres are polystyrene microspheres with a particle diameter of 240-440 nm.

[0065] The organic-inorganic silicon source includes an orthosilicate compound and a silane compound in a ratio of 1:0.5 to 10; wherein, the orthosilicate compound includes (but is not limited to): orthosilicate Methyl orthosilicate, orthobutyl silicate, or combinations thereof; the silane com...

Embodiment 1

[0087] Take 1.5g of polyvinylpyrrolidone (average relative molecular weight 58000), 0.5g of potassium persulfate, 100mL of distilled water, stir at room temperature, after the solution is clarified, add 11mL of styrene monomer, and pass through N 2 0.5h; then at 40°C, with a stirring speed of 300rpm, and stirring for 12h, a polystyrene emulsion with an average particle size of about 240nm can be obtained.

[0088] Take 0.71g of the polystyrene emulsion obtained above, dissolve it in 40mL of absolute ethanol, and disperse it fully by ultrasonication for 30min to obtain a 5.0wt% suspension; at 20°C, the stirring speed is 300rpm, Add 2mL of ammonia water to the suspension, and after 5min, add 0.5mL of organic-inorganic silicon source, tetraethylorthosilicate and methyltriethoxysilane with a silicon source volume ratio of 2:1, and react for 0.5h to obtain Silica-coated polystyrene nanoparticles with an average particle size of around 260 nm.

[0089] The silicon oxide-coated pol...

Embodiment 2

[0093] Take 1.0g of polyvinylpyrrolidone (average relative molecular weight 58000), 0.68g of azobisisobutyramide hydrochloride, 100mL of distilled water, stir at room temperature, and after the solution is clarified, add 11mL of styrene monomer, and pass into N 2 2h; then at 70°C with a stirring speed of 200rpm, stirring for 24h to obtain a polystyrene emulsion (PS) with an average particle diameter of about 300nm.

[0094] Take 5.0 g of the polystyrene emulsion obtained above, dissolve it in 40 mL of absolute ethanol, and ultrasonically dissolve it for 30 minutes to obtain a 7.0 wt % suspension; at 50 ° C, the stirring speed is 200 rpm. Add 5mL of ammonia water to the suspension, and after 5min, add 1.5mL of organic-inorganic silicon source, tetraethyl orthosilicate and methyltriethoxysilane with a silicon source volume ratio of 1:3, react for 3h, and obtain the average particle size Silica-coated polystyrene particles with a diameter of about 320 nm.

[0095] The silicon o...

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Abstract

The invention provides a method for preparing a two-dimensional ordered porous nano-silica anti-reflection film with a hydrophobic effect. Specifically, the method includes the following steps: Step 1: Synthesizing polystyrene microspheres by a dispersion polymerization method to Polystyrene microspheres are used as templates, and organically modified silicon sources are added under alkaline conditions to synthesize core-shell structure particles of silica-coated polymer microspheres; Step 2: Using Langmuir-Brangett (LB) method, on the glass substrate, the silica-coated polymer microspheres obtained in step 1 are self-assembled into a two-dimensional array film layer; step 3: the silica-coated polymer obtained in step 2 The film layer of the microsphere is post-treated to obtain a silicon dioxide two-dimensional ordered anti-moth-eye nano film layer. The method has the characteristics of low cost and is suitable for large-scale rapid production, and has good application prospects in optical lenses, display screens, photovoltaic cells and the like.

Description

technical field [0001] The invention relates to the preparation and application of a porous nano silicon oxide anti-reflection film, in particular to the preparation and application of a two-dimensional ordered hollow bowl-shaped silicon dioxide nano anti-reflection film with a hydrophobic effect, which belongs to the preparation technology of porous nano materials field. Background technique [0002] As a natural, renewable and non-polluting new energy source, solar energy has attracted widespread attention of scientific researchers all over the world. Among them, solar cells that directly convert light energy into clean electrical energy are an important innovative application. The solar photovoltaic glass is a link in the solar photovoltaic industry chain, which mainly depends on the development of solar photovoltaic cells. One of the reasons for the loss of solar cell conversion efficiency is that photovoltaic glass has a reflection loss of nearly 8% of incident sunlig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/25C03C17/00
CPCC03C17/007C03C17/25C03C2217/213C03C2217/76C03C2218/111
Inventor 陈玲玲王彪许高杰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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