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A method for preparing super-slip coatings based on flower-like titanium dioxide nanoparticles that are resistant to high temperature liquids and boiling water

A technology of titanium dioxide and nanoparticles, applied in the direction of coating, etc., can solve the problems of complicated preparation steps, low practicability, and poor stability of super-slip coating materials, and achieve excellent oil-locking ability, low cost, and good stability.

Active Publication Date: 2022-04-19
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a simple and convenient method for industrial production of super slippery coatings, to solve the problems of complicated preparation steps, poor stability and low practicability of super slippery coating materials

Method used

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  • A method for preparing super-slip coatings based on flower-like titanium dioxide nanoparticles that are resistant to high temperature liquids and boiling water
  • A method for preparing super-slip coatings based on flower-like titanium dioxide nanoparticles that are resistant to high temperature liquids and boiling water
  • A method for preparing super-slip coatings based on flower-like titanium dioxide nanoparticles that are resistant to high temperature liquids and boiling water

Examples

Experimental program
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Effect test

Embodiment 1

[0020] 1. Pretreatment of the glass flake substrate: In order to better grow titanium dioxide nanoparticles, the glass flake substrate is roughened and mercaptolated. Sonicate the glass flakes in acetone, ethanol, and water for 20 minutes, and obtain clean glass flakes after complete drying. Mix a certain amount of NaOH solution with a concentration of 0.01mol / L and (3-mercaptopropyl)trimethoxysilane in a volume ratio of 10:1, stir for 10 minutes to obtain a mixed solution, and put a clean glass piece into the mixed solution After soaking for 3 hours, take it out and put it into a vacuum drying oven at 100°C for 6 hours of reaction to obtain a treated glass sheet substrate.

[0021] 2. In situ growth of flower-like titania nanoparticles: sea urchin-like titania nanoparticles were grown in situ on glass substrates by a modified template-free solvothermal method. A certain amount of absolute ethanol and glycerol were mixed and stirred evenly according to the volume ratio of 5:2...

Embodiment 2

[0024] 1. Pretreatment of the glass flake substrate: In order to better grow titanium dioxide nanoparticles, the glass flake substrate is roughened and mercaptolated. Sonicate the glass flakes in acetone, ethanol, and water for 20 minutes, and obtain clean glass flakes after complete drying. Mix a certain amount of NaOH solution with a concentration of 0.01mol / L and (3-mercaptopropyl)trimethoxysilane in a volume ratio of 10:1, stir for 10 minutes to obtain a mixed solution, and put a clean glass piece into the mixed solution After soaking for 2 hours, take it out and put it into a vacuum drying oven at 100°C, and react for 7 hours to obtain a treated glass sheet substrate.

[0025] 2. In situ growth of flower-like titania nanoparticles: sea urchin-like titania nanoparticles were grown in situ on glass substrates by a modified template-free solvothermal method. A certain amount of absolute ethanol and glycerol were mixed and stirred evenly according to the volume ratio of 5:2,...

Embodiment 3

[0029] 1. Pretreatment of the glass flake substrate: In order to better grow titanium dioxide nanoparticles, the glass flake substrate is roughened and mercaptolated. Sonicate the glass flakes in acetone, ethanol, and water for 20 minutes, and obtain clean glass flakes after complete drying. Mix a certain amount of NaOH solution with a concentration of 0.01mol / L and (3-mercaptopropyl)trimethoxysilane in a volume ratio of 10:1, stir for 10 minutes to obtain a mixed solution, and put a clean glass piece into the mixed solution After soaking for 1 hour, take it out and put it into a vacuum drying oven at 100° C., and react for 8 hours to obtain a treated glass sheet substrate.

[0030]2. In situ growth of flower-like titania nanoparticles: sea urchin-like titania nanoparticles were grown in situ on glass substrates by a modified template-free solvothermal method. A certain amount of absolute ethanol and glycerol were mixed and stirred uniformly according to the volume ratio of 5...

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Abstract

The invention relates to a method for preparing a super-slippery coating based on flower-shaped titanium dioxide nano-particles that is resistant to high temperature liquids and boiling water. The invention comprises the steps of pretreatment of the glass flake substrate, in-situ growth of flower-shaped titanium dioxide nanoparticles, and preparation steps of a transparent boiling-water-resistant super-slip coating. The ultra-slip coating has good liquid repellency, exhibits excellent anti-wetting ability to various common water-based liquids at different temperatures, and also has a certain degree of transparency. At the same time, the use of ultraviolet light to excite titanium dioxide makes it in an activated state and undergoes a graft reaction with trimethylsilicone oil, which greatly enhances the oil-locking ability of the super-slip coating, so that the super-slip coating exhibits resistance to high-temperature liquids and boiling water. Good stability in the environment. The preparation process of the present invention is simple, the raw material is easy to obtain, the cost is low, the stability is strong, and it is suitable for large-area preparation and application, not only applicable to the application in daily life, but also applicable to various anti-wetting, self-cleaning and other fields.

Description

technical field [0001] The invention belongs to the technical field of super-slip surface preparation, and relates to a preparation method of a super-wetting coating, in particular to a preparation method of a super-slip coating based on flower-shaped titanium dioxide nano-particles that is resistant to high temperature liquid and boiling water. Background technique [0002] Over the past decade, superslip surfaces exhibiting anti-wetting and anti-adhesion properties to a variety of liquids have attracted considerable interest in research and industrial applications, including antifouling, liquid transport, anti- Corrosion, water collection, etc. The preparation of super-slip surfaces usually combines porous and rough structural designs (such as suspension structures, candle structures, concave corner structures, etc.) with oily substances that are not miscible with anti-wetting liquids (such as perfluoropolyether, etc.) Liquid repellency. [0003] The high-temperature-res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/42
CPCC03C17/42C03C2217/76
Inventor 郭志光黄灿
Owner HUBEI UNIV
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