Self-cleaning antireflection coating and preparation method thereof

An anti-reflection coating and self-cleaning technology, which is applied in the field of solar energy applications, can solve the problems of reducing system efficiency, increasing costs, and easy contamination of glass surfaces, and achieves the goals of reducing operation and maintenance costs, low cost, and improving environmental adaptability Effect

Inactive Publication Date: 2017-07-07
CANGZHOU TRX SOLAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under normal circumstances, solar thermal collectors and photovoltaic modules are generally used in harsh environments such as strong sunlight, deserts, and rainy areas. However, the anti-reflection coatings used in conventional solar thermal collectors and photovoltaic modules are relatively hydrophilic , the ability to resist water, oil, and dust erosion is poor, resulting in the glass surface being easily polluted, which reduces the system efficiency and greatly increases the cost of operation and maintenance

Method used

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  • Self-cleaning antireflection coating and preparation method thereof
  • Self-cleaning antireflection coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment provides a self-cleaning anti-reflection coating. The self-cleaning anti-reflection coating uses tetraethyl orthosilicate and ethanol as precursors, stirred for 10 hours under the condition of pH=0.4, and then left to age for 7 days , forming sol c; standing for 30 days to form sol d; mixing sol c and sol d at a ratio of 1:5 to form sol e; On the inner and outer walls of the proportional tube, the progress is that the lowering speed of the plated piece is 0.5mm / s, and the pulling speed is 0.3mm / s after standing still for 5 minutes; Dry at ℃ for 1 hour to obtain the self-cleaning anti-reflection coating; finally, the sol e is coated on the reflector of the solar collector tube and the surface of the photovoltaic panel by the spin coating method, and the spin coating speed is 0.1r / min , after being plated, it was left to stand in the air for 30 minutes to form a gel, and then dried at 400° C. for 1 hour to obtain the self-cleaning anti-reflection coating. ...

Embodiment 2

[0037] This embodiment provides a self-cleaning anti-reflection coating. The self-cleaning anti-reflection coating uses polydimethylsiloxane and methanol as precursors, stirs for 15 hours under the condition of pH=2, and then stands and ages for 5 hours. day, form sol c; stand and age for 1 day to form sol d; mix sol c and sol d at a ratio of 0.7:8 to form sol e; On the inner and outer walls of the glass tube, during immersion plating, the descending speed of the plated part is 0.3mm / s, and the pulling speed is 1.5mm / s after standing for 10 minutes; Dry at 500°C for 2 hours to obtain the self-cleaning anti-reflection coating; finally, the sol e is coated on the reflector of the solar energy collector tube and the surface of the photovoltaic cell panel by the spin coating method, and the spin coating speed is 2r / min, after being plated, it was left to stand in the air for 30 minutes to form a gel, and then dried at 500°C for 2 hours to obtain the self-cleaning anti-reflection ...

Embodiment 3

[0039]This embodiment provides a self-cleaning anti-reflection coating. The self-cleaning anti-reflection coating uses tetraethyl orthosilicate and ethanol as precursors, is stirred at pH=0.9 for 20 hours, and then left to age for 6 days. Sol c was formed; another polydimethylsiloxane and ethanol were used as precursors, stirred at pH=0.9 for 15 hours, and then left to age for 5 days to form sol d; sol c and sol d were mixed at a ratio of 0.1:6 Proportionally mixed to form sol e; then, sol e was dip-coated on the inner and outer walls of the glass tube of the solar heat collector by the pulling method. 2 mm / s; after the immersion plating is completed, let it stand in the air for 30 minutes to form a gel, and then dry it at 550 ° C for 3 hours to obtain the self-cleaning anti-reflection coating; finally, the sol e is coated by spin coating Coated on the reflector of the solar heat collector and the surface of the photovoltaic panel, the spin coating speed is 5r / min, after the c...

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Abstract

The invention discloses a self-cleaning antireflection coating and a preparation method thereof. The contact angle of the self-cleaning anti-reflection coating is >150°, and the rolling angle is <10°. Mirrors and photovoltaic panels have self-cleaning properties. On the basis of greatly improving the system efficiency of solar thermal collectors and photovoltaic panels, they can greatly improve their environmental adaptability, weather resistance and service life; at the same time, they can also greatly reduce The operation and maintenance cost of the power station, the preparation method of the self-cleaning anti-reflection coating is simple, the requirement for the shape of the substrate is low, the cost is low, and it is non-toxic and non-polluting; the self-cleaning anti-reflection coating has excellent high temperature resistance and can withstand 400 °C Above high temperature, it also has acid and alkali corrosion resistance, cold and heat shock resistance, ultraviolet radiation resistance, and its hardness and wear resistance are high.

Description

technical field [0001] The invention relates to the field of solar energy applications, in particular to a self-cleaning anti-reflection coating and a preparation method thereof. Background technique [0002] The depletion of traditional energy has forced human beings to constantly seek new alternative energy sources, especially the environmental damage and air pollution in recent years, making new energy, especially clean energy, particularly important, and human desire for new energy is becoming increasingly urgent. Solar energy is the cleanest, safest and inexhaustible new energy source discovered by mankind. The application of solar thermal energy has a history of 100 years, but the application of medium and high temperature has been done for nearly 30 years. It started relatively late in China, lagging behind developed countries in Europe and the United States by about 20 years. [0003] Transmittance is one of the main optical properties of solar collector tubes, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D183/04C09D5/08C03C17/23B05D3/02B05D3/04B05D7/00B05D7/22
CPCC09D1/00B05D3/0254B05D3/0406B05D7/00B05D7/222B05D2203/35B05D2254/06C03C17/23C03C2217/213C09D5/08C09D5/18C09D183/04
Inventor 曹明刚杨兴王静张磊闫超一孙亚楠范兵
Owner CANGZHOU TRX SOLAR TECH
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