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Super-hydrophobic super-oleophobic anti-reflection glass surface layer and preparation method thereof

A super-hydrophobic super-oleophobic, glass surface technology, applied in the field of surface treatment, new materials, self-cleaning optical materials, can solve the problems of unstable performance, insufficient durability, poor mechanical properties, etc., to achieve high light transmittance and Hydrophobic and oleophobic, enhanced coating ability, and improved mechanical strength

Inactive Publication Date: 2014-07-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current literature reports mainly focus on superhydrophobic coatings, and a few involve superhydrophobic transparent coating films or superhydrophobic superoleophobic coating films. At the same time of hydrophobic and oleophobic properties, some reduce the light transmittance, and some because the bonding force between the substrate and the micro-nano composite rough structure and the internal bonding force of the micro-nano composite rough structure is mostly physical adsorption, so the bonding force is weak and the mechanical properties are poor. , the durability is not enough, the performance is unstable, what is more, it is easy to fall off, and it is difficult to use in harsh environments, which greatly reduces its practical value

Method used

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  • Super-hydrophobic super-oleophobic anti-reflection glass surface layer and preparation method thereof
  • Super-hydrophobic super-oleophobic anti-reflection glass surface layer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] This example is the preparation of superhydrophobic superoleophobic anti-reflection glass surface layer. The specific process is as follows: the glass substrate is ultrasonicated in deionized water and absolute ethanol for 20 minutes respectively to clean the glass substrate; 3 :O 2 The volume ratio is 4:1, the gas mixture pressure is 80Pa, and the power is 1.8W / cm 2 Under certain conditions, plasma etching was performed on the clean glass surface to obtain a submicron-scale rough glass surface; 4 mL tetraethyl orthosilicate was added dropwise to a mixed solvent composed of 15 mL absolute ethanol and 8 mL water, and 20 wt % Pluronic F108 was added (BASF company) ethanol solution 4mL, stirred for 0.5h to obtain a mixed solution, dropwise added 1mL of concentrated hydrochloric acid (36wt%) to the above mixed solution; stirred at room temperature for 2h to obtain SiO 2 Sol dipping solution; the submicron rough glass surface is immersed in SiO at a speed of 50mm / min 2 St...

Embodiment 2

[0024] This example is the preparation of superhydrophobic superoleophobic anti-reflection glass surface layer. The specific process is as follows: the glass substrate is ultrasonicated in deionized water and absolute ethanol for 20 minutes respectively to clean the glass substrate; 3 :O 2 The volume ratio is 4:1, the gas mixture pressure is 90Pa, and the power is 1.9W / cm 2 Under certain conditions, plasma etching was performed on the clean glass surface to obtain a submicron-sized rough glass surface; 4 mL tetraethyl orthosilicate was added dropwise to a mixed solvent composed of 20 mL absolute ethanol and 9 mL water, and 20 wt % Pluronic F127 was added (BASF company) ethanol solution 6mL, stirred for 0.5h to obtain a mixed solution, dropwise added 1mL of concentrated hydrochloric acid (36wt%) to the above mixed solution; stirred at room temperature for 2.5h to obtain SiO 2 Sol dipping solution; the submicron rough glass surface is immersed in SiO at a speed of 50mm / min 2 ...

Embodiment 3

[0026] This example is the preparation of superhydrophobic superoleophobic anti-reflection glass surface layer. The specific process is as follows: the glass substrate is ultrasonicated in deionized water and absolute ethanol for 20 minutes respectively to clean the glass substrate; 3 :O 2 The volume ratio is 4:1, the gas mixture pressure is 100Pa, and the power is 2.0W / cm 2 Under certain conditions, plasma etching was performed on the clean glass surface to obtain a submicron-sized rough glass surface; 4 mL tetraethyl orthosilicate was added dropwise to a mixed solvent composed of 23 mL absolute ethanol and 10 mL water, and 20 wt % Pluronic P123 was added (BASF company) ethanol solution 8mL, stirred for 0.5h to obtain a mixed solution, dropwise added 1mL of concentrated hydrochloric acid (36wt%) to the above mixed solution; stirred at room temperature for 3h to obtain SiO 2 Sol dipping solution; the submicron rough glass surface is immersed in SiO at a speed of 50mm / min 2 ...

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Abstract

The invention discloses a super-hydrophobic super-oleophobic anti-reflection glass surface layer and a preparation method thereof, which belong to the field of novel materials and particularly belong to the field of self-cleaning optical materials. The preparation method comprises the following steps: firstly, etching the surface of a glass body by CF3 / O2 plasma to construct a submicron coarse structure; secondly, chemically bonding a SiO2 nano porous layer; adjusting the space packing factor by means of adding a pore-foaming agent so as to construct a double-stage coarse glass surface with a suspended structure; and finally fluoridizing for modification so as to reduce surface free energy. The obtained glass surface layer achieves super-hydrophobic and super-oleophobic self-cleaning standards and has excellent light transmission. As the lower layer submicron structure in a micro-nano composite structure required by super-amphiphobic performance is directly constructed from the glass body and then a nano porous layer is chemically bonded, so that the double-layer loose structure in the prior art is avoided and the mechanical strength of the surface layer is enhanced greatly; the glass surface is high in stability and excellent in durability, thereby having significant practical application value.

Description

technical field [0001] A superhydrophobic superoleophobic anti-reflection glass surface layer and a preparation method thereof, the invention belongs to the field of new materials, in particular to the field of self-cleaning optical materials. It specifically relates to the technical fields of preparation of inorganic nanometer materials, preparation of optical coating films, and surface treatment. Background technique [0002] In order to prevent the transparent substrate from being polluted and affecting its light transmittance, it is necessary to carry out a protective treatment of self-cleaning anti-reflection coating on its surface. The coating film with super-hydrophobic, super-oleophobic and high light transmittance has anti-frost, anti-fog, anti-pollution, antibacterial self-cleaning properties, and has excellent light transmission, which can effectively protect the environment in harsh environments The performance of optical components, optoelectronic components, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23
Inventor 邹路易顾文秀李磊王玉如卢先领陈凤凤杨光东刘世伟
Owner JIANGNAN UNIV
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