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A kind of high reflection coated glass and preparation method thereof

A high-reflection film, high-refractive index technology, applied in the coating and other directions, can solve the problems of high cost of coating, excessive concentration, and no high reflectivity of sunlight

Active Publication Date: 2019-03-19
上海西源新能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the original glass sheet without special coating treatment has a reflectivity of less than 10% in the visible light band and near-infrared band, and does not have the characteristics of high reflectivity to sunlight, thus reducing the actual utilization of sunlight by the module.
The magnetron sputtering method can coat excellent high-reflection coatings on the glass surface, but the coating is expensive and not suitable for large-scale use in the field of photovoltaic modules; directly use high refractive index materials such as titanium oxide particles, zirconium oxide particles and binders and so on to prepare nano-sol, and use the sol-gel method to plate a high-reflection coating on the glass surface, but as the concentration of titanium oxide and other particles in the solution increases, titanium oxide powder will produce overpolymerization when it exceeds the critical point, resulting in titanium oxide The reflection efficiency of particles such as particles to sunlight is significantly reduced

Method used

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  • A kind of high reflection coated glass and preparation method thereof
  • A kind of high reflection coated glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0131] Example 1: Coated glass 1

[0132] Organic template material-PS microsphere emulsion (particle diameter 200nm-500nm, concentration is 30%) 20g, binder tetraethyl silicate 10g, tetrabutyl titanate 15g, catalyst concentrated hydrochloric acid 0.5g and high-purity water 54g, machine After mixing, stir at a temperature of 20°C for 1 hour. After the materials are evenly mixed, add 0.2 g of leveling agent BYK-301 and 0.3 g of defoamer BYK-025 and continue stirring for 0.5 hours.

[0133] The coating solution was uniformly sprayed on the glass surface by a spraying method, and baked at 500° C. for 2 hours to obtain the coated glass 1 with high reflectivity.

[0134] Performance Testing

[0135] For coated glass 1, the cross-section of the coated glass was scanned by electron microscope, the results are as follows figure 1 shown. figure 1 It is a scanning electron microscope picture of the coated glass section with high reflectivity of coated glass 1. It can be seen that the...

Embodiment 2

[0137] Example 2: Coated glass 2

[0138] Organic template material-PMMA microsphere emulsion (particle diameter 200nm-500nm, concentration is 30%) 10g, zirconia nanopowder (particle diameter 200nm-500nm) 10g, binder tetraethyl silicate 10g, tetrabutyl titanate 15g of ester, 0.5g of catalyst concentrated nitric acid and 54g of solvent ethanol, mechanically mixed and stirred at 40°C for 24 hours, after mixing evenly, add 0.2g of leveling agent BYK-301 and 0.3g of defoamer BYK-025 and continue stirring 12h, to be used.

[0139] The coating solution was evenly rolled onto the glass surface by a roller coating method, and baked at 750° C. for 120 seconds to obtain the coated glass 2 with high reflectivity.

[0140] Performance Testing

[0141] For the coated glass 2, the coating layer contains a large number of densely distributed spherical holes, the porosity ranges from 20% to 60%, and the diameter of the spherical holes is about 200nm-500nm. The average reflectance of the co...

Embodiment 3

[0142] Example 3: Coated glass 3

[0143] The organic template material ROPAQUE TM (Le Pai Cool TM ) Uchuang E covering polymer emulsion (average particle size 380nm) 20g, binder tetraethyl silicate 10g, tetrabutyl titanate 15g, catalyst acetic acid 0.5g and solvent isopropanol 54g, mechanically mixed at 30°C Stir for 12 hours at the temperature, mix well, add 0.2g of leveling agent BYK-306 and 0.3g of defoamer BYK-028, continue stirring for 6 hours, and set aside.

[0144] The coating solution was uniformly coated on the glass surface by a spin coating method, and baked at 700° C. for 180 s to obtain the coated glass 3 with high reflectivity.

[0145] Performance Testing

[0146] For the coated glass 3, the coating layer contains a large number of densely distributed spherical holes, the porosity ranges from 40% to 80%, and the diameter of the spherical holes is about 200nm-500nm. The average reflectance of the coated glass 3 in the range of 400nm-1200nm is greater than 7...

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Abstract

The invention provides a high-reflection coated glass and a preparation method thereof. Specifically, the invention provides a composite material having high-reflection film, and the composite material comprises (1) a base material; and (2) a high-reflection film placed on at least one main surface of the base material. The thickness of the high-reflection film is 1-50 mum, spherical holes are disposed on the high-reflection film, and the diameter of each spherical hole is 0.10-1 mum.

Description

technical field [0001] The invention relates to the fields of photovoltaic cells and the like. Specifically, the present invention provides a kind of coated glass with high reflectivity using organic polymer nanoparticles as a template material and a preparation method thereof. Background technique [0002] In recent years, with global climate change and environmental pollution becoming more and more serious, the demand for clean energy has become more and more urgent. Existing photovoltaic modules mainly include photovoltaic glass, cells, EVA, backplane, junction box and packaging materials. The back sheet is located on the back of the solar cell, which supports and protects the cell. At the same time, the high reflectivity back sheet can also effectively increase the actual power generation power of the photovoltaic module. Since the photovoltaic module is used outdoors for a long time, it is also necessary to require the backsheet to have excellent weather resistance. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/23
CPCC03C17/006C03C17/23C03C2217/212C03C2217/22C03C2217/23C03C2217/425C03C2217/70
Inventor 张敏王彪
Owner 上海西源新能源技术有限公司
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