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Production method of high-strength broadband anti-reflection film

An anti-reflection film, high-strength technology, applied in the direction of coating, can solve the problems of low film-forming strength and insufficient durability, and achieve the effect of high light transmittance, high mechanical strength, and wide application prospects

Active Publication Date: 2016-09-21
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: when the anti-reflection film is prepared based on the mixed sol of nano-silica spheres and linear silicic acid polymer silica sol, the film-forming strength is not high and the durability is not enough

Method used

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  • Production method of high-strength broadband anti-reflection film
  • Production method of high-strength broadband anti-reflection film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Add 1.40ml of ammonia water (mass concentration: 28%, the same below) to 37.50ml of absolute ethanol, add 1.0ml of tetraethyl orthosilicate, stir at 51°C for 6 hours, and let stand for 7 days. Form a milky white sol, reflux at 110°C for 24 hours, remove ammonia water, make the pH of the sol 7 to obtain SiO 2 Solid spherical sol, marked as Sol A;

[0028] Tetraethyl orthosilicate, nitric acid, hydrogen peroxide, absolute ethanol by tetraethyl orthosilicate: H 2 o 2 : HNO 3 : absolute ethanol = 0.6: 0.15: 0.05: 55 molar ratio, after mixing and stirring at room temperature (25°C) for 6 hours, reflux to remove hydrogen peroxide in the system to obtain a modified linear silicic acid polymer silica sol, Labeled Sol B;

[0029] Mix sol A and sol B at a volume ratio of 2:1 and reflux for 2 hours, then place it at room temperature (25°C) for 12 hours to obtain the lower coating sol;

[0030] (2) At room temperature (25°C), 0.06g of acrylic resin (M w 5000) an emulsion ...

Embodiment 2

[0036] (1) Add 1.40ml of ammonia water to 38.00ml of absolute ethanol, add 1.24ml of tetraethyl orthosilicate, stir at 51°C for 6 hours, let stand and age for 7 days to form a milky white sol, and reflux at 110°C 24h, remove the ammonia water, make the pH of the sol be 7 to obtain SiO 2 Solid spherical sol, marked as Sol A;

[0037] Tetraethyl orthosilicate, nitric acid, hydrogen peroxide, absolute ethanol by tetraethyl orthosilicate: H 2 o 2 : HNO 3 : Absolute ethanol = 0.5: 0.15: 0.05: 45 molar ratio, after mixing and stirring at room temperature (25° C.) for 6 hours, reflux to remove hydrogen peroxide in the system to obtain a modified linear silicic acid polymer silica sol, Labeled Sol B;

[0038] Mix sol A and sol B at a volume ratio of 4:1 and reflux for 2 hours, then place it at room temperature (25°C) for 12 hours to obtain the lower coating sol;

[0039] (2) At room temperature (25°C), 0.06g of acrylic resin (M w 5000) an emulsion with a solid content of 30% was...

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Abstract

The invention belongs to the field of optical film materials, and especially relates to a novel high-strength broadband anti-reflection film and a production method thereof. The method comprises the following steps: coating with two films through a sol-gel technology and a czochralski technology, wherein the lower film is composed of SiO2 solid spheres and hydroxyl group reinforced chain-shaped silica sol, the upper film is composed of SiO2 hollow spheres and hydroxyl group reinforced chain-shaped silica sol, and the thickness of every film is controlled through using the czochralski speed; and carrying out high temperature calcining to obtain the 400-1200nm double-layer broadband anti-reflection film with the average light transmittance of 99% and the hardness of 5H.

Description

technical field [0001] The invention belongs to the field of optical thin film materials, in particular to a novel high-strength broadband anti-reflection film and a preparation method thereof. Background technique [0002] For photovoltaic or photothermal solar modules, the photoelectric conversion efficiency or photothermal conversion efficiency is very sensitive to the light transmittance requirements of sunlight. A system composed of thousands of identical solar modules, even if the absorption of sunlight increases by 1%, The impact on the power of the overall system is also huge. Since a single-layer anti-reflection coating is coated on the surface of the glass, there will only be a great light transmittance at one wavelength, and the average light transmittance in the spectral band (such as 400-1200nm) is not high, such as in solar thermal power generation vacuum glass The surface of the tube is coated with a single layer of SiO 2 The anti-reflection coating only ach...

Claims

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Application Information

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IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2217/213
Inventor 陈若愚包蕾王红宁钟璟刘小华
Owner CHANGZHOU UNIV