Super-amphiphobic material with hydrophobic migration and self-repairing performance and preparation method of super-amphiphobic material

A hydrophobic migration and super-amphiphobic technology, applied in polyester coatings, coatings, electrical components, etc., can solve the problems that the local area cannot exhibit super-hydrophobic properties, does not have super-hydrophobicity, and local wetting of RTV insulators. , to achieve the effects of excellent hydrophobicity, simple coating process, and improved pollution flashover voltage

Active Publication Date: 2022-04-26
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]However, the traditional RTV coating itself does not have super-hydrophobic properties, even after hydrophobic migration, the hydrophilic dirt on the surface becomes hydrophobic; for RTV In other words, the local area still cannot exhibit super-hydrophobic properties; thus, in the case of high ambient humidity or rain, RTV insulators are prone to local wetting. When the voltage increases, the partially wet insulator will still Flashover events occur at relatively low voltage conditions

Method used

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  • Super-amphiphobic material with hydrophobic migration and self-repairing performance and preparation method of super-amphiphobic material
  • Super-amphiphobic material with hydrophobic migration and self-repairing performance and preparation method of super-amphiphobic material
  • Super-amphiphobic material with hydrophobic migration and self-repairing performance and preparation method of super-amphiphobic material

Examples

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Effect test

Embodiment 1

[0058] A superhydrophobic superoleophobic film with hydrophobic migration and self-healing properties, the preparation method of which comprises the following steps:

[0059] 1) Under the condition of magnetic stirring, add 4 mL of NaOH aqueous solution with a concentration of 0.08 g / mL to 100 mL of ethanol, and slowly pour 20 mL of tetraethyl orthosilicate into 100 mL of ethanol after stirring for 5 minutes, hydrolyze at room temperature for 4 hours to obtain a silicon dispersion, and statically Place and age for 2 days;

[0060] 2) 6.5ml concentration of 20vol% H 2 SO 4 Slowly add the aqueous solution to the silicon dispersion prepared in step 1), stop the reaction after stirring for 1 hour, and let stand for 4 hours;

[0061] 3) Take 0.45ml of perfluorodecyltrimethoxysilane, and evenly disperse it in 8.55ml of ethanol, then uniformly add the above dispersion into the silica sol prepared in step 2), and react for 2h under the condition of magnetic stirring to obtain Super...

Embodiment 2

[0071] A superhydrophobic superoleophobic film with hydrophobic migration and self-healing properties, the preparation method of which comprises the following steps:

[0072] 1) Under the condition of magnetic stirring, add 6 mL of NaOH aqueous solution with a concentration of 0.08 g / mL to 100 mL of ethanol, and slowly pour 20 mL of tetraethyl orthosilicate into 100 mL of ethanol after stirring for 5 minutes, hydrolyze at room temperature for 4 hours to obtain a silicon dispersion, and statically Place and age for 2 days;

[0073] 2) 13ml of HNO with a concentration of 0.165g / mL 3 The aqueous solution is slowly added to the silicon dispersion prepared in step 1), and the reaction is stopped after stirring for 10 minutes;

[0074] 3) Take 0.55ml of perfluorodecyltrimethoxysilane, and evenly disperse it in 8.45ml of ethanol, then add the above-mentioned dispersion evenly into the silica sol prepared in step 2), and react for 2h under the condition of magnetic stirring to obtain...

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Abstract

The invention discloses a super-amphiphobic material with hydrophobic migration and self-repairing performance, the super-amphiphobic material comprises a hydrophobic migration modified resin bottom layer and a super-hydrophobic and super-oleophobic surface layer arranged on the surface of the hydrophobic migration modified resin bottom layer, and a coating adopted by the hydrophobic migration modified resin bottom layer is mainly formed by mixing a resin dispersion liquid, a migration agent and an auxiliary agent; a coating adopted by the super-hydrophobic and super-oleophobic surface layer is mainly prepared from acid modified silicon dispersion liquid and fluorosilane. The super-amphiphobic material disclosed by the invention has good super-hydrophobic and super-oleophobic characteristics and self-repairing performance; and the related preparation method is simple, convenient to operate, low in cost, capable of realizing macro preparation and suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of functional materials and modification thereof, and in particular relates to a super-amphiphobic material with hydrophobic migration and self-repairing properties and a preparation method thereof. Background technique [0002] With the rapid development of my country's industrial and agricultural production, air pollution is becoming more and more serious. Some dust and pollutants in the air have a greater impact on the power sector. In addition, the surge in electricity consumption has led to a greater burden on the power grid and pollution flashover accidents in the power system. Keep happening. Pollution flashover accidents involve a wide range, and the power outage lasts for a long time, which will cause a lot of economic losses. In order to reduce the occurrence of pollution flashover, the power sector has introduced room temperature vulcanized silicone rubber (RTV) coatings, which can be coated with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D123/12C09D201/04C09D133/00C09D1/00C09D7/63C09D7/65H01B17/50
CPCC09D167/08C09D133/00C09D1/00C09D5/002C09D7/63C09D7/65H01B17/50C08L23/12C08L27/12C08L83/04C08K5/544
Inventor 谢毅熊伟
Owner WUHAN UNIV OF TECH
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