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Nanometer SiO2 super-hydrophobic coating and preparation process and application thereof

A super-hydrophobic coating and preparation technology, which is applied in coatings, photovoltaic power generation, electrical components, etc., can solve problems such as poor mechanical stability, poor coating transparency, and complicated preparation processes, and achieve low adhesion characteristics and simple equipment , enhance the effect of interconnection

Inactive Publication Date: 2019-12-31
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to overcome the deficiencies of the prior art, such as complex preparation process of hydrophobic coating nanostructure, poor durability of superhydrophobic performance, poor mechanical stability, low temperature resistance, and poor transparency of the coating, and provides a nano-SiO 2 Preparation process of superhydrophobic coating, directly synthesized SiO with porous nanostructure on the surface of transparent window 2 The coating, which is combined with the transparent substrate by strong chemical bonds, is obtained after fluorination

Method used

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  • Nanometer SiO2 super-hydrophobic coating and preparation process and application thereof
  • Nanometer SiO2 super-hydrophobic coating and preparation process and application thereof
  • Nanometer SiO2 super-hydrophobic coating and preparation process and application thereof

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Effect test

Embodiment 1

[0042] Preparation of nano-SiO 2 The steps of the superhydrophobic coating are as follows:

[0043] The first step: in the NaClO containing 0.1 ~ 0.2M 4 , or LiClO 4 , or LiClO 4 with NaClO 4 In the 0.01-0.05M EDOT / ACN solution with mixed salts in any proportion as the supporting electrolyte, the PEDOT film was directly electrodeposited on the ITO electrode by applying a cyclic potential between -0.5 and +1.6V by cyclic voltammetry; or by constant potential The PEDOT thin film is obtained by direct electrodeposition on the ITO electrode by applying any potential between +1.3 ~ +1.5V.

[0044] Step 2: Rinse with acetonitrile or ethanol polar organic solvent, dry it, put it in a closed container or desiccator, and put it into two small open containers at the same time, add 0.5-2mL tetraethoxysilane (TEOS) to one of them ), another 0.5-2mL ammonia solution with a concentration of 30%-38% was added, and the NH 3 Catalyzed TEOS hydrolysis and condensation reaction for 24-48 h...

Embodiment 2

[0048] The only difference with the embodiment is that the first step is: in the NaClO containing 0.1~0.2M 4 , or LiClO 4 , or LiClO 4 with NaClO 4 In the 0.1-0.5M PPy / CAN solution with mixed salts in any proportion as the supporting electrolyte, the PPy film was directly electrodeposited on the ITO electrode by applying a cyclic potential between -0.2 and +1.1V by cyclic voltammetry; or by constant potential Apply any potential between +0.8 ~ +1.0V to obtain PPy film by direct electrodeposition on the ITO electrode.

[0049] see Figure 2-4 , prepared nano-SiO 2 The microstructure, thermal and mechanical properties of the superhydrophobic coating are characterized as follows:

[0050] Calcined SiO using a field emission scanning microscope 2 Characterization of the coating microstructure, figure 2 shows that the prepared nano-SiO 2 The superhydrophobic coating retains the nano-rough structure morphology of the conductive polymer, and its particle thickness size is le...

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Abstract

The invention discloses a nanometer SiO2 super-hydrophobic coating and a preparation process and application thereof. The preparation process comprises the following steps: electrochemically depositing a porous network-shaped conductive polymer film on the surface of an inert electrode plate as a nano-structure template; carrying out chemical vapor deposition to deposit a SiO2 aerogel coating on the surface of the nano-structure template; carrying out calcining at a high temperature to remove the nano-structure template and allowing the SiO2 aerogel coating and a glass surface to form chemicalbonds at high temperature to obtain a SiO2 nanometer coating; and subjecting the SiO2 nanometer coating to surface fluorination treatment to obtain the nanometer SiO2 super-hydrophobic coating with high transparency, thermal / mechanical stability and extremely low adhesion. The nanometer SiO2 super-hydrophobic coating can be applied to high-rise glass windows or surface assembly parts of photovoltaic cells.

Description

technical field [0001] The present invention relates to a highly transparent, thermally / mechanically stable and extremely low adhesion nano-SiO 2 The superhydrophobic coating, its preparation process and application belong to the field of thin film materials. Background technique [0002] With the development of modern advanced material technology, surface coating technologies including induction cladding technology, laser cladding technology, thermal spraying technology, electroplating technology, vapor deposition technology and surface adhesive coating technology are widely used on the surface of parts made of various materials. Enhancement and repair, with increasingly wide applications in microelectronics, micromechanics, optics, surface modification, etc. [0003] At present, the commonly used preparation methods of superhydrophobic coatings are spraying method, template method, etching method, electrospinning method and sol-gel method, etc., but the above-mentioned me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/42C09D1/00H01L31/0216
CPCC03C17/42C03C2217/213C03C2218/152C09D1/00H01L31/02167Y02E10/50
Inventor 徐连仪杜浩明李荣斌韦东来康旭刘达况天阳徐一亭
Owner SHANGHAI DIANJI UNIV
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