Anti-reflection liquid for photovoltaic module glass as well as preparation method and application of anti-reflection liquid

A photovoltaic module and glass technology, applied in coatings and other directions, can solve the problems that the anti-reflection function cannot meet the long-term use requirements of photovoltaic cells, the use environment of photovoltaic cells is complex, and the surface is easy to adhere to dust and bird droppings, etc., and achieve excellent self-cleaning performance. , Improve self-cleaning performance, enhance film-forming compactness and adhesion performance

Active Publication Date: 2021-12-07
JOLYWOOD SUZHOU SUNWATT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex and harsh environment in which photovoltaic cells are used, for ground photovoltaic power plants, the anti-reflection film as the outermost layer of photovoltaic modules often needs to withstand harsh conditions such as rain, snow, sunlight, environmental pollutants, and sand and dust in arid desert areas. Environmental conditions, so the complex and harsh outdoor environment poses a severe test to the application of anti-reflective coatings in photovoltaic cells
A single anti-reflection function can no longer meet the long-term use requirements of photovoltaic cells outdoors. The anti-reflection film is modified for different use environments, such as moisture-proof, self-cleaning, anti-fog, anti-icing, dust-proof and anti-fouling. It has become a hot spot in the field of anti-reflection coating research
[0004]Solar panels mainly rely on sunlight to convert light energy into electrical energy, so the surface of solar panels is clean and unshaded is very important, but the existing solar cells For example, the application number: CN202011538579.9 discloses an anti-reflection and anti-reflection liquid for repairing photovoltaic module glass and its preparation method. Its self-cleaning performance is poor. Manual cleaning is required, and too frequent manual cleaning not only increases maintenance costs, but also easily scratches the surface of solar panels, resulting in a decrease in light transmittance. Moreover, after manual cleaning, dust will adhere immediately, thereby affecting its power generation efficiency

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  • Anti-reflection liquid for photovoltaic module glass as well as preparation method and application of anti-reflection liquid
  • Anti-reflection liquid for photovoltaic module glass as well as preparation method and application of anti-reflection liquid
  • Anti-reflection liquid for photovoltaic module glass as well as preparation method and application of anti-reflection liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing anti-reflection liquid for photovoltaic module glass in this embodiment comprises the following steps:

[0046] Step 1: Add 320g of absolute ethanol to the reactor, slowly drop 4.8mL of hydrochloric acid solution into the isopropanol, add 20mL of ultrapure water, stir well to obtain a solution with a pH of 1-2, and control the solution temperature to 30°C , use the dropping funnel to slowly add 90mL tetraethyl orthosilicate dropwise under stirring, the dropping speed is controlled at 10-20 drops per second. , so that the pH of the solution is 2-4 to obtain nano-scale acidic silica sol.

[0047] Step 2, then take 10mL of silica sol, add 15mL of water, 6mL of isopropanol, 17mL of absolute ethanol, 12mL of n-propanol, 30mL of methanol, 10mL of propylene glycol methyl ether and 0.5mL of ethyl polysilicate to adjust the pH to 9, then add a mixture of triethoxysilane and trimethoxysilane (mass ratio 1:1) accounting for 0.5% of the total solution as a h...

Embodiment 2

[0050] A method for preparing anti-reflection liquid for photovoltaic module glass in this embodiment comprises the following steps:

[0051] Step 1: Add 480g of n-propanol to the reactor, slowly drop 5.2mL of nitric acid solution into the isopropanol, add 25mL of ultrapure water, stir well to obtain a solution with a pH of 1-2, and control the solution temperature to 30°C , use the dropping funnel to slowly add 90mL tetraethyl orthosilicate dropwise under stirring, the dropping speed is controlled at 10-20 drops per second. , so that the pH of the solution is 2-4 to obtain nano-scale acidic silica sol.

[0052] Step 2, then take 8mL of silica sol, add 10mL of water, 6mL of isopropanol, 10mL of absolute ethanol, 12mL of n-propanol, 50mL of methanol, 10mL of propylene glycol methyl ether and 0.5mL of ethyl polysilicate to adjust the pH to 10, then add a mixed solution (mass ratio of 3:2) of methyl tri(trimethylsiloxane) silane and methyl triethoxysilane accounting for 0.3% of ...

Embodiment 3

[0055] A method for preparing anti-reflection liquid for photovoltaic module glass in this embodiment comprises the following steps:

[0056] Step 1: Add 320 g of methanol to the reactor, slowly add 4.8 mL of acetic acid solution dropwise into isopropanol, add 20 mL of ultrapure water, and stir evenly to obtain a solution with a pH of 1-2. Control the temperature of the solution to 35 ° C. Slowly add 90mL tetraethyl orthosilicate dropwise with stirring using a dropping funnel, the dropping speed is controlled at 10-20 drops per second, after the dropwise addition is completed, react at a constant temperature for 1.5h under stirring, and leave it open for 4 days. The pH of the solution is set at 2-4 to obtain nanoscale acidic silica sol.

[0057] Step 2, then take 10mL of silica sol, add 15mL of water, 6mL of isopropanol, 15mL of absolute ethanol, 8mL of n-propanol, 35mL of methanol, 12mL of propylene glycol methyl ether and 0.5mL of ethyl polysilicate to adjust the pH to 9, t...

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Abstract

The invention relates to an anti-reflection liquid for photovoltaic module glass as well as a preparation method and application thereof, wherein the preparation method comprises the steps: adding an acid solution into low alcohol, adjusting the pH value of the solution to 1-2, slowly dropwise adding organosiloxane while stirring, reacting, and standing until the pH value of the solution is 2-4 to obtain nanoscale acidic silicon dioxide sol; taking quantitative silicon dioxide sol, adding water, a water-soluble organic solvent and a hardening agent, adjusting the pH value to 9-10, adding a hydrophilic or hydrophobic surfactant for hydrophilic or hydrophobic modification, uniformly stirring, and standing for a period of time; and adjusting the pH to 3-4, and thus obtaining the anti-reflection liquid for the photovoltaic module glass, wherein the anti-reflection liquid has the advantages of being capable of being self-dried at normal temperature, good in adhesiveness, long-acting, self-cleaning, anti-fouling and high in visible light transmission rate. The water contact angle of the anti-reflection liquid is smaller than 7 degrees or larger than 120 degrees, has excellent self-cleaning performance, is applied to the surface of the photovoltaic module glass, can be long-term antifouling, then can improve the power generation of photovoltaic modules, and can reduce the cleaning and maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, and in particular relates to an antireflection liquid for photovoltaic module glass, a preparation method and application thereof. Background technique [0002] With the gradual depletion of traditional fossil energy, solar energy is considered to be one of the most promising clean energy sources to replace traditional fossil energy. Photovoltaic solar cells (referred to as photovoltaic cells) can not only convert the direct radiation energy of the sun, but also use the diffuse energy of sunlight with the same conversion efficiency. It can be used in any sunny place without geographical restrictions. Both commercialization and academic research have received widespread attention and rapid development. [0003] The electromagnetic radiation energy of sunlight will pass through many intermediate surfaces before it enters the power generation system and becomes usable energy, and wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/63C09D7/65C03C17/30
CPCC09D1/00C09D7/63C09D7/65C03C17/30C03C2217/732C03C2218/11Y02E10/52
Inventor 林建伟张付特孙海龙王显鑫薛虎唐邓李君君
Owner JOLYWOOD SUZHOU SUNWATT
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