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Fluorinated silicon dioxide nanoparticles and application

A fluorinated silica and nanoparticle technology, applied in coatings and other directions, can solve problems such as the decline of superhydrophobicity and anti-icing performance of coatings, affecting the promotion of coatings, and the easy agglomeration and dispersion of nanoparticles.

Inactive Publication Date: 2021-09-14
GUANGDONG IND TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prepared nanoparticles have problems such as easy agglomeration and poor dispersion, which lead to a decrease in the superhydrophobic and anti-icing properties of the coating, thus affecting the further promotion of the coating.

Method used

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  • Fluorinated silicon dioxide nanoparticles and application
  • Fluorinated silicon dioxide nanoparticles and application
  • Fluorinated silicon dioxide nanoparticles and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 5.7g vinyltriethoxysilane (30mmol), 6.2g tetraethyl orthosilicate (30mmol), 30mL ethanol as solvent, and 3mL ammonia solution into the flask, react at room temperature for 12h, and spin dry the solvent after the reaction , 50 ° C vacuum drying to obtain 10.0 g white solid product vinyl silica.

[0027] (2) Add 10.0g vinyl silica, 12.5g perfluorohexylethylacrylic acid (30mmol), 50mL ethanol as solvent, and 0.5g azobisisobutyronitrile into the flask, react at 78°C for 12h, spin Dry the solvent and vacuum-dry at 50°C to obtain 20.5 g of white solid product fluorinated silicon dioxide.

[0028] (3) Dissolving 1.0 g of the prepared fluorinated nano silicon dioxide in ethanol to make a 30% solution. Then the prepared solution was sprayed on the substrate, and dried at 100° C. for 6 hours to obtain the anti-icing coating.

Embodiment 2

[0030] (1) Add 5.7g vinyltriethoxysilane (30mmol), 6.2g tetraethyl orthosilicate (30mmol), 30mL ethanol as solvent, and 3mL ammonia solution into the flask, react at room temperature for 12h, and spin dry the solvent after the reaction , 50 ° C vacuum drying to obtain 13.2 g white solid product vinyl silica.

[0031] (2) Add 10.0g of vinyl silica, 15.5g of perfluorooctylethylacrylic acid (30mmol), 50mL of ethanol as solvent, and 0.5g of azobisisobutyronitrile into the flask, and react at 78°C for 12h. The solvent was spin-dried and vacuum-dried at 50° C. to obtain 23.1 g of white solid product fluorinated silicon dioxide.

[0032] (3) Dissolving 1.0 g of the prepared fluorinated nano silicon dioxide in ethanol to make a 30% solution. Then the prepared solution was sprayed on the substrate, and dried at 100° C. for 6 hours to obtain the anti-icing coating.

Embodiment 3

[0034] (1) Add 5.7g vinyltriethoxysilane (30mmol), 6.2g tetraethyl orthosilicate (30mmol), 30mL ethanol as solvent, and 3mL ammonia solution into the flask, react at room temperature for 12h, and spin dry the solvent after the reaction , 50 ° C vacuum drying to obtain 13.2 g white solid product vinyl silica.

[0035] (2) Add 10.0g of vinyl silica, 18.5g of perfluorodecylethylacrylic acid (30mmol), 50mL of ethanol as solvent, and 0.5g of azobisisobutyronitrile into the flask, and react at 78°C for 12h. The solvent was spin-dried and vacuum-dried at 50° C. to obtain 22.8 g of white solid product fluorinated silicon dioxide.

[0036] (3) Dissolving 1.0 g of the prepared fluorinated nano silicon dioxide in ethanol to make a 30% solution. Then the prepared solution was sprayed on the substrate, and dried at 100° C. for 6 hours to obtain the anti-icing coating.

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Abstract

The invention relates to fluorinated silicon dioxide nanoparticles and application thereof. According to the technical scheme, vinyltriethoxysilane, tetraethoxysilane, alkali and a solvent are mixed, deionized water is dropwise added, the mixture is stirred at the room temperature to react for 1-24 h, and vinyl silicon dioxide is obtained; fluorine-containing acrylate, vinyl silicon dioxide, an initiator and a solvent are mixed, heating is conducted to 70-85 DEG C, and stirring is conducted to react for 2-24 hours to obtain the fluorinated silicon dioxide nanoparticles. The water contact angle of the coating prepared through copolymerization of fluorinated acrylate and vinyl silicon dioxide is larger than 150 degrees, the rolling angle is smaller than 8 degrees, and the coating has good anti-icing performance. The invention belongs to the technical field of nano material modification and application.

Description

technical field [0001] The invention belongs to the technical field of modification and application of nanometer materials, and in particular relates to a preparation method and application of fluorinated silicon dioxide nanoparticles. [0002] technical background [0003] Icing is a common phenomenon in daily life, but in some fields (aviation, highway, power transmission and communication, etc.) icing may hinder the normal operation of instruments and equipment, leading to serious accidents and even disasters. Therefore, it is of great application value to construct an anti-icing coating on the surface of the substrate. In recent years, superhydrophobic materials have attracted much attention, and they have extremely broad application prospects in industrial and agricultural production and medical biology. However, there are many deficiencies in the anti-icing materials reported so far, which cannot meet the needs of the product. Therefore, research on efficient and relia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00
CPCC09D1/00
Inventor 李永莲叶秀雅鄢嘉炜佘嘉康侯欣桦黎彧江娟张泽敏
Owner GUANGDONG IND TECHN COLLEGE
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