Preparation method of transparent mesoporous titanium dioxide hydrophobic/ultra-hydrophilic functional thin film

A technology of mesoporous titanium dioxide and titanium dioxide, applied in the direction of coating, etc., can solve the problem of less preparation methods, and achieve the effect of simple process, strong repeatable operation and strong wear resistance
CN105906375AActive Publication Date: 2016-08-31益阳金陇电子科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
益阳金陇电子科技有限公司
Publication Date
2016-08-31

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Abstract

The invention relates to a preparation method of a transparent mesoporous titanium dioxide hydrophobic / ultra-hydrophilic functional thin film. The method includes the steps of: 1) preparation of a precursor sol: diluting titanate in an alcohol solution, adding a stabilizer acetylacetone to prepare a solution A, dissolving a surfactant in the alcohol solution or a mixture liquid of alcohol and water to prepare a solution B, dropwisely adding the solution B into the solution A to prepare a mixed solution, regulating the pH value of the mixed solution to 2-5 and stirring the mixed solution until stable sol is formed; 2) coating of the sol: spray-coating a surface of a substrate with the sol, and performing thermal treatment to prepare the hydrophobic / ultra-hydrophilic titanium dioxide thin film. Through selection of different surfactants, different thin films having ultra-hydrophilic or strong-hydrophobic performances can be produced on the same production line through the same technology, so that the preparation method is suitable for different demands on products in large-scale industrial production. The thin film actually achieves the ultra-hydrophilic / strong-hydrophobic functions (a contact angle is less than 5 degrees or is more than 130 degrees).
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Description

technical field

[0001] The invention belongs to the field of functional films, and in particular relates to a titanium dioxide hydrophobic / superhydrophilic functional film and a preparation method thereof. Background technique

[0002] In recent years, the potential applications of superphilic / hydrophobic materials inspired by the "lotus leaf effect" in self-cleaning, microfluidic systems, and biocompatibility have stimulated widespread interest in academia and industry. Superhydrophobic material is a material that repells water. The contact angle between the surface of the material and water is greater than 150°. Water droplets cannot slide and spread on the surface and keep rolling in a spherical shape, thereby achieving the effect of rolling self-cleaning. Super-hydrophilic materials refer to materials with a contact angle of less than 5° between the surface of the material and water, so that water droplets form a water film on the surface of the substrate, thereby inhibi...

Claims

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