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Preparation method for antireflection film on surface of solar vacuum heat-collecting tube

A technology of vacuum heat collecting tube and anti-reflection film, which is applied in the field of solar energy, can solve the problems that cannot meet the requirements of self-cleaning, and achieve the effects of good mechanical properties, good wear resistance, and excellent refractive index

Inactive Publication Date: 2018-12-07
JIANGSU JINGZHAN ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used anti-reflection coatings on the surface of solar vacuum heat collectors cannot meet the requirements of self-cleaning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing an anti-reflection film on the surface of a solar vacuum heat collecting tube, comprising the following steps:

[0022] Step 1, in parts by weight, mix 5 parts of ethanol and 6 parts of hydrochloric acid solution with a concentration of 1mol / L, add 7 parts of silica sol under stirring condition, after stirring evenly, add 80 parts of ethanol, mix evenly, seal and age 12h, obtain acidic sol solution;

[0023] Step 2, in parts by weight, add 2 parts of silica sol to 20 parts of ethanol, after stirring evenly, add 1 part of ethanol solution of ammonia water under stirring condition, the concentration of ammonia water is 20% v / v, continue to stir evenly, Seal and age for 12 hours to obtain an alkaline sol solution;

[0024] Step 3, in parts by weight, add 3 parts of titanium dioxide, 0.5 parts of zinc oxide and 0.5 parts of aluminum oxide to 100 parts of deionized water, ultrasonically disperse, add 5 parts of 40% sodium silicate aqueous solution, st...

Embodiment 2

[0031] A method for preparing an anti-reflection film on the surface of a solar vacuum heat collecting tube, comprising the following steps:

[0032] Step 1, in parts by weight, mix 8 parts of ethanol and 9 parts of hydrochloric acid solution with a concentration of 1mol / L, add 10 parts of silica sol under stirring condition, after stirring evenly, add 120 parts of ethanol, mix evenly, seal and age 12h, obtain acidic sol solution;

[0033] Step 2, in parts by weight, add 4 parts of silica sol to 35 parts of ethanol, after stirring evenly, add 2 parts of ethanol solution of ammonia water under stirring condition, the concentration of ammonia water is 25% v / v, continue to stir evenly, Seal and age for 10 hours to obtain an alkaline sol solution;

[0034] Step 3, in parts by weight, add 5 parts of titanium dioxide, 0.8 parts of zinc oxide and 0.6 parts of aluminum oxide to 100 parts of deionized water, ultrasonically disperse, add 8 parts of 40% sodium silicate aqueous solution,...

Embodiment 3

[0041] A method for preparing an anti-reflection film on the surface of a solar vacuum heat collecting tube, comprising the following steps:

[0042] Step 1, in parts by weight, mix 10 parts of ethanol and 13 parts of hydrochloric acid solution with a concentration of 1mol / L, add 15 parts of silica sol under stirring condition, after stirring evenly, then add 150 parts of ethanol, mix evenly, seal and age 12h, obtain acidic sol solution;

[0043] Step 2, in parts by weight, add 5 parts of silica sol to 50 parts of ethanol, after stirring evenly, add 4 parts of ethanol solution of ammonia water under stirring condition, the concentration of ammonia water is 30% v / v, continue to stir evenly, Sealed and aged to obtain alkaline sol solution;

[0044] Step 3, in parts by weight, add 7 parts of titanium dioxide, 1 part of zinc oxide and 1 part of aluminum oxide to 100 parts of deionized water, ultrasonically disperse, add 10 parts of sodium silicate aqueous solution, stir evenly, a...

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PUM

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Abstract

The invention discloses a preparation method for an antireflection film on a surface of a solar vacuum heat-collecting tube. The preparation method comprises the following steps: respectively preparing an acidic sol solution and an alkaline sol solution; using sodium silicate, titanium oxide, zinc oxide and aluminum oxide for preparing a silicon oxide coated nanometer powder and modifying the surface thereof; mixing the acidic sol solution and the alkaline sol solution, sealing and ageing, adding the modified nanometer powder and ultrasonically treating, thereby acquiring a film coating solution; adopting a steeping-pulling process for preparing the antireflection film. The antireflection film prepared according to the invention has excellent mechanical properties, high wear resistance andhigh refractive index.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and in particular relates to a method for preparing an antireflection film on the surface of a solar vacuum heat collecting tube. Background technique [0002] The use of solar energy can avoid the environmental crisis brought about by fossil energy, and at the same time meet the growing energy demand. Solar thermal and photoelectric utilization technologies can solve the supply of heat and electricity in the fields of industry and people's livelihood. [0003] The high-temperature vacuum heat collector tube is a key component in the solar thermal power generation system, and its performance directly determines the heat collection efficiency of the entire system. In order to maximize the sunlight through the glass and enter the core part of the heat collecting tube and improve the utilization efficiency of sunlight, it is necessary to prepare a layer of optical film with anti-reflection eff...

Claims

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Application Information

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IPC IPC(8): C03C17/00
CPCC03C17/007C03C2217/29C03C2218/111
Inventor 芮唐明黄华叶
Owner JIANGSU JINGZHAN ENERGY TECH CO LTD