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A kind of preparation method of high transmittance hydrophobic coating film for photovoltaic glass

A high light transmittance, photovoltaic glass technology, applied in the direction of coating, etc., can solve the problems that need to be further improved, and achieve the effect of improving photoelectric conversion efficiency, increasing light transmittance, and single equipment

Active Publication Date: 2021-10-08
HUNAN BANFERT NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effect of the currently used coating film in terms of light transmittance and hydrophobicity needs to be further improved

Method used

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  • A kind of preparation method of high transmittance hydrophobic coating film for photovoltaic glass
  • A kind of preparation method of high transmittance hydrophobic coating film for photovoltaic glass
  • A kind of preparation method of high transmittance hydrophobic coating film for photovoltaic glass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 Shown, a kind of preparation method for the high transmittance hydrophobic coating film of photovoltaic glass comprises the following steps:

[0035] (1) Add 41.67g (0.2mol) of ethyl orthosilicate, 120.2g (2mol) of isopropanol, and 9g (0.5mol) of deionized water into a three-necked flask, mix and stir, add hydrochloric acid to adjust the pH to 2-3, and stir Under reaction for 4 hours, the silica sol with an average particle size of about 10nm was obtained;

[0036](2) Raise the temperature to 60°C, add 3.1g of perfluorodecyltriethoxysilane, 146.9g of isopropanol, 4.8g of ethylene glycol butyl ether, and 0.03g of polyethylene glycol octylphenyl ether, and stir Stop the reaction after 6 hours of reaction, wait until the temperature drops to room temperature, take out and filter to obtain a mixed sol B with a solid content of 10%-20% and an average particle size of 15nm (the pot life is 6-8 months);

[0037] (3) Aging for 1-7d for use, the substrate is m...

Embodiment 2

[0042] A method for preparing a hydrophobic coating film with high light transmittance for photovoltaic glass, comprising the following steps:

[0043] (1) Add 41.67g (0.2mol) of ethyl orthosilicate, 108.2g (1.8mol) of isopropanol, and 9g (0.5mol) of deionized water into a three-necked flask, mix and stir, add hydrochloric acid to adjust the pH to 2-3, React for 4 hours under stirring to obtain a silica sol with an average particle size of about 20 nm;

[0044] (2) Raise the temperature to 60°C, add 3.1g of perfluorodecyltriethoxysilane, 146.9g of isopropanol, 4.8g of butyl glycol ether, and 0.03g of polyethylene glycol octylphenyl ether and stir Stop the reaction after reacting for 6 hours, wait until the temperature drops to room temperature, take out and filter to obtain a mixed sol B with a solid content of 10%-20% and an average particle size of 25nm (the pot life is 6-8 months);

[0045] (3) Aging for 1-7d for use, the substrate is made of solar photovoltaic glass of 30...

Embodiment 3

[0048] A method for preparing a hydrophobic coating film with high light transmittance for photovoltaic glass, comprising the following steps:

[0049] (1) Add 41.67g (0.2mol) of ethyl orthosilicate, 73.6g (1.6mol) of absolute ethanol, and 9g (0.5mol) of deionized water into a three-necked flask, mix and stir, add hydrochloric acid to adjust the pH to 2-3, React for 4 hours under stirring to obtain a silica sol with an average particle size of about 15 nm;

[0050] (2) Raise the temperature to 60°C, add 13.12g of n-decyltrimethoxysilane, 35.43g of absolute ethanol, and 0.03g of polyethylene glycol octylphenyl ether, and stop the reaction after stirring for 6 hours. to room temperature, take out and filter to obtain a mixed sol B with a solid content of 10%-20% and an average particle size of 20nm (the pot life is 6-8 months);

[0051] (3) Aging for 1-7d for use, the substrate is made of solar photovoltaic glass of 30mm×30mm, spin-coated at a speed of 5000rpm / min for 60s with ...

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Abstract

The invention discloses a method for preparing a hydrophobic coating film with high light transmittance for photovoltaic glass, comprising the following steps: (1) mixing a silicon source with an organic solvent, performing a sol-gel reaction in acid catalysis to obtain a mixed sol A (2) Add organosiloxane and surfactant to mixed sol A, and carry out secondary sol-gel reaction under stirring to obtain mixed sol B; (3) age mixed sol B, then coat and heat treatment to obtain the obtained the hydrophobic coating. The present invention prepares coating film precursor (namely mixed sol B) by two-step sol-gel method and preferred organic solvent, the film obtained after coating has high hydrophobicity and high light transmittance, also has anti-fog performance, can improve Improve the light transmittance of solar photovoltaic glass and improve the photoelectric conversion efficiency of solar cells.

Description

technical field [0001] The invention belongs to the field of coating materials, in particular to a method for preparing a coating film for photovoltaic glass. Background technique [0002] Solar power is one of the cleanest, safest and most reliable sources of energy now and in the future. As the supply of traditional energy such as oil and coal continues to be tight around the world, the efficient use of solar energy is extremely important. my country has abundant light resources and relatively mature related application technologies, which largely meet the current and future energy needs. At present, my country's annual output of solar products accounts for about 45% of the world, and it is the world's largest producer and exporter of solar products. The products mainly include high-purity polysilicon, solar cells, and solar cell components. At present, the utilization of solar energy mainly includes solar thermal conversion and photovoltaic conversion, and both solar th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/00C03C17/23C03C17/30
CPCC03C17/009C03C17/23C03C17/30C03C2218/111C03C2218/114C03C2218/116C03C2218/118
Inventor 张冬明邓秀琳刘娅莉李新雄
Owner HUNAN BANFERT NEW MATERIALS TECH
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