Preparation method of wear-resistant super-amphiphobic coating based on titanium dioxide/silica composite nanoparticles

A technology of composite nanoparticles and titanium dioxide, which is applied in coatings and other directions, can solve the problems of complicated preparation steps, poor weather resistance, and poor wear resistance of superamphiphobic materials, and achieve excellent mechanical and chemical stability, low cost, and raw materials. Easy to get effect

Inactive Publication Date: 2019-12-06
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a simple and convenient method for industrial production of wear-resistant superamphiphobic coatings,

Method used

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  • Preparation method of wear-resistant super-amphiphobic coating based on titanium dioxide/silica composite nanoparticles
  • Preparation method of wear-resistant super-amphiphobic coating based on titanium dioxide/silica composite nanoparticles
  • Preparation method of wear-resistant super-amphiphobic coating based on titanium dioxide/silica composite nanoparticles

Examples

Experimental program
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Effect test

Embodiment 1

[0022] 1. Preparation of flower-like titanium dioxide particles: layered flower-like titanium dioxide nanoparticles were synthesized by a typical template-free solvothermal method. During this process, absolute ethanol (45 ml) and glycerol (15 ml) were mixed at a volume ratio of 3:1 by magnetic stirring at room temperature. TBT (2ml) was added dropwise, stirred for 10min, transferred to a stainless steel autoclave lined with tetrafluoroethylene, sealed, and kept at 180°C for 30 hours. After naturally cooling to room temperature, the white sediment was collected by centrifugation at 7000 rpm for 5 minutes, and washed 3 times with absolute ethanol. After the white precipitate was completely dried at 60°C, it was calcined in air at 400°C for 5 hours to obtain flower-like titanium dioxide particles.

[0023] 2. Preparation of multi-layered silica-coated titania composite particles: Superhydrophobic titania / silica composite particles were prepared by the improved Stobber method. ...

Embodiment 2

[0027] 1. Preparation of flower-like titanium dioxide particles: layered flower-like titanium dioxide nanoparticles were synthesized by a typical template-free solvothermal method. During this process, absolute ethanol (45 ml) and glycerol (15 ml) were mixed at a volume ratio of 3:1 by magnetic stirring at room temperature. TBT (3ml) was added dropwise, stirred for 10 minutes, transferred to a stainless steel autoclave lined with tetrafluoroethylene, sealed, and kept at 190°C for 28 hours. After naturally cooling to room temperature, the white sediment was collected by centrifugation at 7000 rpm for 5 minutes, and washed 3 times with absolute ethanol. After the white precipitate was completely dried at 60°C, it was calcined in air at 425°C for 4 hours to obtain flower-like titanium dioxide particles.

[0028] 2. Preparation of multi-layered silica-coated titania composite particles: Superhydrophobic titania / silica composite particles were prepared by the improved Stobber meth...

Embodiment 3

[0033] 1. Preparation of flower-like titanium dioxide particles: layered flower-like titanium dioxide nanoparticles were synthesized by a typical template-free solvothermal method. During this process, absolute ethanol (45 ml) and glycerol (15 ml) were mixed at a volume ratio of 3:1 by magnetic stirring at room temperature. TBT (4ml) was added dropwise, stirred for 10 minutes, transferred to a stainless steel autoclave lined with tetrafluoroethylene, sealed, and kept at 200°C for 26 hours. After naturally cooling to room temperature, the white sediment was collected by centrifugation at 7000 rpm for 5 minutes, and washed 4 times with absolute ethanol. After the white precipitate was completely dried at 60°C, it was calcined in air at 450°C for 3 hours to obtain flower-like titanium dioxide particles.

[0034] 2. Preparation of multi-layered silica-coated titania composite particles: Superhydrophobic titania / silica composite particles were prepared by the improved Stobber meth...

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Abstract

The invention belongs to the field of preparation of super-amphiphobic materials, and relates to a preparation method of a wear-resistant super-amphiphobic coating based on titanium dioxide/silica composite nanoparticles. The preparation method includes the steps: preparation of flower-like titanium dioxide microparticles, preparation of multi-level titanium dioxide/silica composite particles, modification of low surface energy substances and spray preparation of the coating. The super-amphiphobic coating has good stability, a n-octane contact angle greater than 150 degrees and a rolling angleof less than 10 degrees, and has excellent wetting resistance to common water and oil-based liquids in life. The prepared coating shows good mechanical stability and good chemical stability, the preparation process is simple, the raw materials are easily available, the cost is low, and the stability is high; and the preparation process is suitable for large-area preparation and application, and the prepared coating is suitable for application in daily life and crude oil transportation and other fields at the same time.

Description

technical field [0001] The invention belongs to the technical field of super-amphiphobic preparation, and relates to a preparation method of a wear-resistant super-amphiphobic coating, in particular to a preparation method of a wear-resistant super-amphiphobic coating based on titanium dioxide / silicon dioxide composite nanoparticles. Background technique [0002] In recent decades, superamphiphobic surfaces, characterized by large contact angles (>150°) and small sliding angles (<10°) for a variety of solid-liquid interfaces, have attracted considerable interest in the study of and industrial applications, including anti-fouling, anti-corrosion, fuel transportation, gas adsorption, manipulation of liquids, etc. The preparation of superamphiphobic surfaces usually combines finer multilayer structure design (such as suspension structure, candle structure, concave corner structure, etc.) with extremely low surface energy substances (such as fluorine-containing compounds) ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/61
CPCC09D1/00C09D7/61
Inventor 郭志光黄灿
Owner HUBEI UNIV
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