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A preparation method of self-cleaning anti-reflection film suitable for heat collecting tube

An anti-reflection film and self-cleaning technology, applied in the field of nano-film materials, can solve problems such as the reduction of light transmittance of thin films, and achieve the effects of low cost, high light transmittance and simple operation

Inactive Publication Date: 2016-06-22
山东汇银新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The films prepared by the above-mentioned methods are all hydrophilic, and it is easy to form a water film on the surface of the film in rainy and foggy days. The existence of the water film will reduce the light transmittance of the film, which becomes the weak point of these methods.

Method used

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  • A preparation method of self-cleaning anti-reflection film suitable for heat collecting tube
  • A preparation method of self-cleaning anti-reflection film suitable for heat collecting tube
  • A preparation method of self-cleaning anti-reflection film suitable for heat collecting tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 926ml of isopropanol and add it to a 2000ml three-necked flask, then turn on the stirrer, continue to add 46ml of tetraethyl orthosilicate and 28ml of deionized water to the flask while stirring, continue to stir, and add 3mol / 1 L of hydrochloric acid, adjust the pH value to 4 and keep it constant. After the hydrochloric acid has been added dropwise, continue to stir at room temperature for 1 hour, then leave it to age for 6 hours, and then add 18.5 g of molecular weight 1000 in the aged solution. Polyethylene glycol was stirred continuously for 1 hour to prepare Sol A for use.

[0024] Take 524ml of isopropanol and add it to a 2000ml three-neck flask, then turn on the stirrer, and continue to add 209ml of tetrabutyl titanate, 209ml of tetrabutyl titanate, 31ml of ethyl acetoacetate, and 209ml of deionized water into the flask while stirring. Then, 3 mol / L hydrochloric acid was added dropwise while stirring continuously to adjust the pH value to 4, stirring was co...

Embodiment 2

[0030] Take 806ml of isopropanol and add it to a 2000ml three-necked flask, then turn on the stirrer, continue to add 121ml of tetraethyl orthosilicate and 73ml of deionized water to the flask while stirring, continue to stir, and drop 3mol / 1 L of hydrochloric acid, adjust the pH value to 5 and keep it constant. After the hydrochloric acid has been added dropwise, continue to stir for 2 hours at room temperature, then leave it to age for 8 hours, then add 24g of polymer with a molecular weight of 1000 in the aged solution. Ethylene glycol was stirred continuously for 2 hours to obtain Sol A for use.

[0031] Take 452ml of isopropanol and add it to a 2000ml three-necked flask, then turn on the stirrer, and continue to add 226ml of tetrabutyl orthosilicate, 68ml of tetrabutyl titanate, 27ml of ethyl acetoacetate, and 226ml of deionized water into the flask while stirring. Then, 3 mol / L hydrochloric acid was added dropwise while stirring continuously, the pH value was adjusted t...

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Abstract

The invention provides a method for preparing a self-cleaning anti-reflection film suitable for heat collecting tubes by adopting a sol-gel liquid surface sedimentation method, which is applied to solar thermal power generation trough heat collecting tubes and belongs to the field of nano film materials. The invention has the advantages of not needing complex equipment, simple operation and low cost, and is suitable for the preparation of antireflection film for heat collecting tubes with curved surface and narrow internal space. Its outstanding advantage is that the film layer prepared by this method has antireflection, hydrophobic and photocatalytic performance. The hydrophobicity makes it difficult for water droplets to cover the surface of the film in rainy and foggy weather and can roll off naturally, and at the same time wash away the inorganic pollutants such as dust on the surface of the film; the photocatalytic performance makes the organic pollutants covered on the surface of the film can be irradiated by sunlight and ultraviolet rays. Decomposed. These characteristics make the anti-reflection film maintain high light transmittance for a long time without being affected by the environment, and improve the light-to-heat conversion rate of the heat collecting tube.

Description

technical field [0001] The invention relates to a method for preparing an anti-reflection film suitable for a heat collecting tube, which is applied to a trough-type heat collecting tube for solar thermal power generation, and belongs to the field of nano film materials. Background technique [0002] The population surge, environmental pollution, and energy shortage have become three major problems in the world today. The development and utilization of green and environmentally friendly new energy is of great significance to alleviate the pressure of environmental pollution and solve the problem of energy shortage. As of 2012, solar thermal power generation ranked first among all energy sources with an average annual growth rate of 61%, becoming the most concerned and fastest-growing new energy. The application of anti-reflection film to the high-temperature heat collector tube of solar thermal power generation can greatly reduce the solar reflection loss, which is of great ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34C04B41/52
Inventor 贾国梁邢鹏杜炜
Owner 山东汇银新能源科技有限公司
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