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Preparation method of high-light-transmittance amphiphobic antireflection film

A technology of anti-reflection film and high light transmittance, applied in the direction of coating, etc., can solve the problems of low solid/liquid adhesion and high transparency

Active Publication Date: 2021-06-08
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite advances in fabricating superhydrophobic AR coatings, fabricating AR coatings that are both hydrophobic and oleophobic remains a challenge
If transparency is achieved, it will be at the expense of increased solid / liquid adhesion, showing low solid / liquid adhesion and high transparency simultaneously remains a major challenge

Method used

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  • Preparation method of high-light-transmittance amphiphobic antireflection film
  • Preparation method of high-light-transmittance amphiphobic antireflection film
  • Preparation method of high-light-transmittance amphiphobic antireflection film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Aluminum nitrate is dissolved in 2-isopropoxyethanol, and then ethanolamine is added dropwise as a stabilizer. The resulting solution was stirred at room temperature for 1 hour to form a transparent aluminum sol;

[0026] Wherein, the mol ratio of aluminum nitrate and 2-isopropoxyethanol is 1:17, and the volume addition of ethanolamine is 3% of the volume addition of 2-isopropoxyethanol;

[0027] With ethanol (EtOH) as solvent, ammonia (NH 4 OH) as a catalyst, and tetraethyl orthosilicate (TEOS) as a silicon source, 20nm SiO was prepared by sol-gel method 2 Solid pellet sol;

[0028] Among them, EtOH, TEOS and NH 4 The molar ratio of OH is 114:3:5.4;

[0029] (2) 20nm SiO 2 Sol and Al 2 o 3 The sol is mixed at a mass ratio of 1:1 and dispersed ultrasonically to obtain uniform and stable SiO 2- al 2 o 3 Mixed sol.

[0030] (3) The dipping-pulling method is used to plate the coating, the pulling speed of the plated coating is 60mm / min, and the dipping time ...

Embodiment 2

[0033] Aluminum sol and SiO 2 The preparation of the solid bead sol is the same as in Example 1.

[0034] (1) 20nm SiO 2 Sol and Al 2 o 3 The sol is mixed at a mass ratio of 1:2 and dispersed ultrasonically to obtain uniform and stable SiO 2- al 2 o 3 Mixed sol.

[0035](2) The dipping-pulling method is used to plate the coating, the pulling speed of the plated coating is 60mm / min, and the dipping time is 360s. After the coated substrate was immediately cured at 100 °C for 5 min, it was calcined in a muffle furnace at 400 °C for 1 h to obtain Al 2 o 3 -SiO 2 membrane, and then immersed in deionized water at 90°C for 30 minutes to obtain a hydrophilic and lipophilic anti-reflective membrane.

[0036] (3) Put the plated film layer into a vacuum desiccator, drop 500 μL PFDTES into it, deposit it for 48 hours, and then put it into a 180° C. oven for curing for 30 minutes to prepare a double thinning anti-reflection film. The highest light transmittance of the coating is...

Embodiment 3

[0038] Aluminum sol and SiO 2 The preparation of the solid bead sol is the same as in Example 1.

[0039] (1) 20nm SiO 2 Sol and Al 2 o 3 The sol is mixed with a mass ratio of 1:3 and dispersed ultrasonically to obtain uniform and stable SiO 2- al 2 o 3 Mixed sol.

[0040] (2) The dipping-pulling method is used to plate the coating, the pulling speed of the plated coating is 60mm / min, and the dipping time is 360s. After the coated substrate was immediately cured at 100 °C for 5 min, it was calcined in a muffle furnace at 400 °C for 1 h to obtain Al 2 o 3 -SiO 2 membrane, and then immersed in deionized water at 90°C for 30 minutes to obtain a hydrophilic and lipophilic anti-reflective membrane.

[0041] (3) Put the plated film layer into a vacuum desiccator, drop 500 μL PFDTES into it, deposit it for 48 hours, and then put it into a 180° C. oven for curing for 30 minutes to prepare a double thinning anti-reflection film. The highest light transmittance of the coating...

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Abstract

The invention belongs to the technical field of antireflection films, and particularly relates to a preparation method of a high-light-transmittance amphiphobic antireflection film. The method comprises the following steps: preparing grass-like alumina sol and silicon dioxide solid sphere sol by a sol-gel method, plating the mixed sol on a glass substrate by a dipping-pulling method, and modifying grass-like aluminum oxide and silicon dioxide solid spheres by using 1H,1H,2H,2H-perfluorodecyl triethoxy silane through chemical vapor deposition. The coating prepared by the method is high in light transmittance, and has excellent properties of super-hydrophobicity, oleophobicity, self-cleaning and the like. The sol-gel method is simple in process, extensible, low in cost and high in light transmittance by adopting a sol-gel method, and has a great prospect in solar energy, building glass, optical equipment and other applications.

Description

technical field [0001] The invention belongs to the field of anti-reflection films, and in particular relates to a preparation method of a double-thin anti-reflection film with high light transmittance. Background technique [0002] Anti-reflection coating is also called anti-reflection coating, that is, one or more layers of optical film are coated on the surface of optical components, and the interference effect of light is used to reduce the light reflection on the surface of optical components and increase the transmittance of light, thereby improving the performance of related devices. utilization of light. In nature, lotus leaves and butterfly wings can exhibit superhydrophobic phenomena, which are the basis for theoretical research and development of superhydrophobic surfaces. Generally, a surface with a water / oil contact angle <90° is called a hydrophilic / oleophilic surface, and a surface with a contact angle >90° is called a hydrophobic / oleophobic surface; es...

Claims

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Application Information

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IPC IPC(8): C03C17/42
CPCC03C17/42C03C2217/23C03C2217/734C03C2218/113C03C2218/111
Inventor 陈若愚石婷王红宁刘小华
Owner CHANGZHOU UNIV
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