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Netlike SiO2 coated sol, and preparation method and application thereof

A network-like, sol technology, applied in chemical instruments and methods, inorganic chemistry, coatings, etc., can solve the problems of complex phase separation technology, low chemical vapor deposition rate, limited use range, etc., to ensure light transmittance and Hydrophobicity, increase light transmittance and mechanical properties, ensure the effect of film-forming

Active Publication Date: 2018-09-18
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Self-assembly and phase separation techniques are complicated and require strict control of conditions; low chemical vapor deposition rate and high working temperature limit its application range

Method used

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  • Netlike SiO2 coated sol, and preparation method and application thereof
  • Netlike SiO2 coated sol, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Network SiO 2 The preparation method of coating sol specifically comprises the following steps:

[0028] (1) At room temperature, take 10mL of methanol and add it to the reaction vessel, then add 0.4mL of MTES and 0.6mL of TMOS dropwise while stirring. After the dropwise addition is completed and stirred evenly, TMOS and MTES of the methanol system are obtained Mix well.

[0029] (2) Add 0.4mL of oxalic acid solution dropwise while stirring in the TMOS and MTES homogeneous mixture of the methanol system prepared in step (1), its concentration is 0.01mol / L, and stir at room temperature for 0.5h, then place in Aged at room temperature for 24 hours to obtain the first aged product.

[0030] (3) Add 0.2mL of ammonia water and 0.1mL of distilled water dropwise to the first aging product prepared in step (2) successively while stirring. Secondary compounds.

[0031] (4) Add 11 mL of methanol to the gel-like second aging product obtained in step (3), and obtain a sol after u...

Embodiment 2

[0038] Network SiO 2 The preparation method of coating sol specifically comprises the following steps:

[0039] (1) At room temperature, take 11mL of methanol and add it to the reaction vessel, then add 0.95mL of MTES and 0.05mL of TMOS dropwise while stirring. After the dropwise addition is completed and stirred evenly, TMOS and MTES of methanol system are obtained Mix well.

[0040] (2) Add 1 mL of oxalic acid solution dropwise while stirring to the homogeneous mixture of TMOS and MTES in the methanol system prepared in step (1), the concentration is 0.01mol / L, and stir at room temperature for 0.5h, then place at room temperature Aged for 24 hours to obtain the first aged product.

[0041] (3) Add 0.58mL of ammonia water and 0.4mL of distilled water dropwise to the first aged product prepared in step (2) successively while stirring, after stirring for 0.5h, place it at room temperature to age for 8 days to obtain a gel-like Second aging.

[0042] (4) Add 13 mL of methano...

Embodiment 3

[0049] Network SiO 2 The preparation method of coating sol specifically comprises the following steps:

[0050] (1) At room temperature, take 12mL of methanol and add it to the reaction vessel, then add 0.8mL of MTES and 0.2mL of TMOS dropwise while stirring. After the dropwise addition is completed and stirred evenly, TMOS and MTES of the methanol system are obtained Mix well.

[0051] (2) Add 1.6mL of oxalic acid solution dropwise while stirring in the TMOS and MTES homogeneous mixture of the methanol system prepared in step (1), its concentration is 0.01mol / L, and stir at room temperature for 0.5h, then place in Aged at room temperature for 24 hours to obtain the first aged product.

[0052] (3) Add 0.8mL of ammonia water and 0.6mL of distilled water dropwise to the first aged product prepared in step (2) successively while stirring, after stirring for 30min, place it at room temperature for aging for 8 days, and obtain a gel-like Secondary compounds.

[0053] (4) Add 1...

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Abstract

The invention discloses a netlike SiO2 coated sol, and a preparation method and an application thereof. The netlike SiO2 coated sol capable of stabilizing for 120 days or more is prepared through copolycondensation of three organosilicons comprising tetramethyl orthosilicate, methyltriethoxysilane and trimethylmethoxysilane, and the netlike SiO2 coated sol is used to prepare an ultraviolet-durablesuper-hydrophobic self-cleaning anti-reflection coating. The surface of glass is coated with a double-sided anti-reflection film by using the coated sol through a pulling-impregnating technology, thedouble-sided anti-reflection film is calcined at 450 DEG C to obtain an anti-reflection film, the average light transmittance of the anti-reflection film in visible light (400-800 nm) is 97% or more,the contact angle is 165 DEG, and after the anti-reflection film is irradiated with 150 W ultraviolet lights for 1000 h, the decrease of the average light transmittance is not more than 0.5%, and thehydrophobic angle still maintains a superhydrophobic state of 150 DEG or more.

Description

technical field [0001] The invention belongs to the field of optical thin film materials, in particular to a network-like SiO 2 Coating sol and its preparation method and application. Background technique [0002] Anti-reflection film plays an important role in new energy photovoltaic power generation and solar thermal power generation technology. Anti-reflection film used on the glass surface of solar photovoltaic and photothermal components can improve its photoelectric or photothermal efficiency. A photovoltaic module without anti-reflection coating has a loss of more than 30% of the reflected light on its surface, which fundamentally limits the improvement of photoelectric efficiency. The use of anti-reflection film technology to reduce the sunlight reflection on the surface of the glass vacuum tube used in the solar thermal power station by 4%, will increase the system efficiency of the 50MW power station by more than 10%. However, there are great opportunities and ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/145C03C17/25
CPCC01B33/145C03C17/25C03C2217/213C03C2217/70C03C2218/113
Inventor 陈若愚
Owner CHANGZHOU UNIV
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