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Broadband anti-reflection hydrophobic film and preparation method thereof

A technology of hydrophobic film and anti-reflection film, which is applied in the field of broadband anti-reflection hydrophobic film and its preparation, which can solve the problems that the transmittance of the film layer does not meet the requirements of photovoltaic modules, no hydrophobic anti-reflection film found, and no hydrophobic anti-reflection film, etc., to achieve the production cost Low cost, little difference in film thickness, and the effect of improving photoelectric conversion efficiency

Active Publication Date: 2018-08-14
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many teams at home and abroad have conducted a lot of research on this point, but most of the prepared films only have the characteristic of hydrophobicity, and the transmittance of the film layer obviously does not meet the needs of photovoltaic modules, and at this stage, small-area uniform coating has basically Solution, in terms of large-area coating, it is obvious that there is no method for uniform coating, so currently other teams do not have equipment that can coat large-area hydrophobic anti-reflective coatings

Method used

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  • Broadband anti-reflection hydrophobic film and preparation method thereof
  • Broadband anti-reflection hydrophobic film and preparation method thereof
  • Broadband anti-reflection hydrophobic film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Ordinary architectural glass coating:

[0027] Preparation of silica sol (anti-reflection solution): Inorganic SiO 2 Precursor tetraethyl orthosilicate, absolute ethanol, and ammonia water are mixed in a volume ratio of 0.7:30:1.5, and magnetically stirred at 60°C for 12 hours (specific operation: now add ammonia water to absolute ethanol and place it in a constant temperature oil bath In the pot, after the solution is stable, tetraethyl orthosilicate is added dropwise to absolute ethanol containing ammonia) and then aged at room temperature for 3 days, crushed with an ultrasonic cell pulverizer for 10 minutes, and then treated with 0.22 μm partial fluoride Use after membrane filtration.

[0028] Preparation of hydrophobic modification solution for anti-reflection film: Prepare hexadecyltrimethoxysilane, deionized water and absolute ethanol according to the volume ratio of 1:12:87, put it in a 100 ml beaker, and hydrolyze it with constant temperature magnetic stirring ...

Embodiment 2

[0036] Small area FTO glass coating:

[0037] Preparation of silica sol (anti-reflection solution): Inorganic SiO 2 Precursor tetraethyl orthosilicate, absolute ethanol, and ammonia water are mixed in a volume ratio of 0.7:30:1.5, and magnetically stirred at 60°C for 12 hours (specific operation: now add ammonia water to absolute ethanol, and place it in a constant temperature oil bath In the pot, after the solution is stable, tetraethyl orthosilicate is added dropwise to absolute ethanol containing ammonia) and then aged at room temperature for 3 days, crushed with an ultrasonic cell pulverizer for 10 minutes, and then treated with 0.22 μm partial fluoride Use after membrane filtration.

[0038] Preparation of hydrophobic modification solution for anti-reflection film: Prepare hexadecyltrimethoxysilane, deionized water and absolute ethanol according to the volume ratio of 2: 11: 87, put it in a 100 ml beaker, and hydrolyze it with constant temperature magnetic stirring at 35...

Embodiment 3

[0046] Large-area photovoltaic glass coating:

[0047] The present invention can not only coat small glass materials, but also coat large photovoltaic glass according to production and living needs.

[0048] 1. Mix the hydrophobic modification solution and the silica sol solution at a volume ratio of 1:5, stir them, and add them to the medicine box of the coating equipment.

[0049] 2. Put the 1635*985mm photovoltaic glass on the feeding place, start the coating equipment, wash it with disc brush, roller brush, fine washing liquid, rinse and air-dry it, and then transport it to the coating place. The spray speed is 1~5ml / s ( The current spray speed is 5ml / s), and the moving speed is 5~10mm / s (the current moving speed is 8mm / s) to pull the film, and send it into the oven after completion.

[0050] 3. Set the temperature at 100-150°C, the time for 1-4h, and the humidity at 40-70 for drying (at this stage, the coating temperature is set at 110°C and the humidity is 65 for 2 hour...

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Abstract

The invention relates to a nanometer material and a coating method, and provides a method for preparing a broadband anti-reflection hydrophobic film by a sol-gel method. The anti-reflection hydrophobic film prepared by the sol-gel method has the characteristics that the anti-reflection effect is good; the manufacturing cost is low; the film plating area is large; the transmission rate of the double-layer broadband anti-reflection film in the light wave band range of 300 to 900 nm is obviously higher than the transmission rate of that of blank glass; particularly, the transmission rate of the anti-reflection film in the waveband of 432 to 900 nm is 95 percent or higher; the maximum transmission rate of 98.8 percent can be reached in the position of 593.6nm, and is much higher than 91.1 percent of that of the blank glass. The water contact angle of the ordinary glass is 41.6 DEG C. The water contact angle of the anti-reflection film after the hydrophobic modification is 145 degrees; thebroadband anti-reflection hydrophobic film and the fuel sensitized battery are combined; through simple spray coating, the battery conversion efficiency is improved by 6.4 percent; huge application potentials are shown in the photovoltaic field and the optical device aspects.

Description

technical field [0001] A wide-band anti-reflection hydrophobic film and a preparation method thereof, belonging to the fields of materials, new energy and the environment, mainly relate to photovoltaic glass and other optical devices that are easily polluted by rainwater and dust, and the coating can effectively improve the anti-reflection, Anti-fouling ability. Background technique [0002] Photovoltaic devices and optical devices are exposed to the environment for a long time, and dust, oil, etc. are inevitably deposited on the glass surface. Improving the self-cleaning ability of glass is an important direction of energy materials research. Many teams at home and abroad have conducted a lot of research on this point, but most of the prepared films only have the characteristic of hydrophobicity, and the transmittance of the film layer obviously does not meet the needs of photovoltaic modules, and at this stage, small-area uniform coating has basically Solution, in terms ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23
CPCC03C17/23
Inventor 谭新玉李炜王书琳王嫚杨瑷碧
Owner CHINA THREE GORGES UNIV