Preparation method of hollow rod-shaped MgF2 particles and application thereof to self-cleaning antireflective film

A technology of hollow rods and particles, applied in the application of self-cleaning anti-reflection film, the field of preparation of hollow rod-shaped MgF2 particles, can solve the problems of glass surface pollution, surface cleaning impossible, and reduce solar energy utilization efficiency, etc., to achieve high transparency Light rate, the effect of avoiding the deterioration of optical effect

Active Publication Date: 2017-05-10
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the surface of the glass cover used in the outdoor solar system is often polluted by dust in the external environment, resulting in a sharp drop in the light transmittance of the glass and reducing the utilization efficiency of solar energy.
Although manual cleaning can solve the pollution problem of the glass surface to a certain extent, the actual application of solar modules usually has a huge working area, and it becomes almost impossible to complete all the surface cleaning work
In addition, multiple wipes on the glass surface are prone to scratches, which will also have a certain impact on its light transmittance

Method used

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  • Preparation method of hollow rod-shaped MgF2 particles and application thereof to self-cleaning antireflective film
  • Preparation method of hollow rod-shaped MgF2 particles and application thereof to self-cleaning antireflective film
  • Preparation method of hollow rod-shaped MgF2 particles and application thereof to self-cleaning antireflective film

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Control magnesium acetate tetrahydrate, HF, total CH 3 The molar ratio of OH is 1:2:250, magnesium acetate tetrahydrate C 4 h 14 MgO 8 The solid was added to anhydrous CH 3 OH, stirred until the solids were completely dissolved, as dispersion A; the HF solution was added to anhydrous CH 3 OH, mixed evenly, as the dispersion B; then the dispersion B was added dropwise to the dispersion A, and the resulting mixed system was transferred to a polytetrafluoroethylene hydrothermal reaction kettle, after 24 hours of hydrothermal heating at 240°C , the solution was taken out after cooling, and a hollow rod-shaped MgF was obtained 2 A sol of particles.

[0025] After detection, the hollow rod-shaped MgF in the above sol 2 The specific shape of the particles is as attached figure 1 shown.

[0026] (1) Add 60ml EtOH, 1ml H to a 100ml beaker 2 O, 3ml NH 4 OH and 2.3ml TEOS were then sealed and stirred in a constant temperature water bath at 30°C for 6 hours, then aged at ...

Embodiment 2

[0048] Hollow Rod MgF 2 The preparation process of the particles is the same as in Example 1.

[0049] (1) Add 114ml EtOH, 2ml H to a 250ml beaker 2 O, 7.12ml NH 4 OH and 3.8ml TEOS were then sealed and stirred in a constant temperature water bath at 30°C for 6 hours, then aged at a constant temperature of 30°C for 3 days; the obtained white sol was placed in a fume hood, and stirred openly to remove ammonia (wet pH test paper was placed close to Just above the mouth of the cup, if the test paper does not change color for a period of time, it means that the ammonia in the sol has been removed), and a solid SiO with a particle size of 50nm is obtained. 2 Nanoparticle sol;

[0050] (2) technology is with embodiment 1,

[0051] (3) technology is with embodiment 1.

[0052] In step (2), by adding MgF 2 Particles and solid SiO in solution 2 The weight ratio of nanoparticles is adjusted, and the light transmittance of the constructed self-cleaning anti-reflection film is show...

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Abstract

The invention belongs to the field of preparation of inorganic materials, and particularly relates to a preparation method of hollow rod-shaped MgF2 particles and application thereof to a self-cleaning antireflective film. After the hollow rod-shaped MgF2 particles and SiO2 particles are compounded, a layer of film is plated by a pulling-dipping method, and after the film is dried at 250 DEG C, the superhydrophobic self-cleaning antireflective film of which the maximum light transmittance can reach 97% or above within the range of visible light is obtained.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic materials, in particular to a hollow rod-shaped MgF 2 Particle preparation method and its application in self-cleaning anti-reflection film. Background technique [0002] The efficiency of converting solar energy from light to heat or electricity has always been an important evaluation index for solar energy utilization, and the conversion efficiency is directly related to the transmittance of sunlight. An important part of the solar system is the glass cover on the solar surface, which supports and protects the solar modules. However, the surface of the glass cover used in the outdoor solar system is often polluted by dust in the external environment, resulting in a sharp drop in the light transmittance of the glass and reducing the utilization efficiency of solar energy. Although manual cleaning can solve the pollution problem of the glass surface to a certain extent, the actual applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/28C03C17/25C03C17/42
CPCC01F5/28C01P2004/04C01P2004/16C03C17/25C03C17/42C03C2217/29C03C2217/73C03C2218/111
Inventor 陈若愚季子涵王红宁钟璟刘小华
Owner CHANGZHOU UNIV
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