Photocatalytic type self-repairing super-hydrophobic coating and preparation method thereof

A technology of super-hydrophobic coating and super-hydrophobic coating, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of non-self-healing and super-hydrophobic properties, and achieve simple preparation process and recovery Superhydrophobicity, the effect of maintaining superhydrophobicity
CN103409028AActive Publication Date: 2013-11-27FUDAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
FUDAN UNIV
Publication Date
2013-11-27

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Abstract

The invention belongs to the technical field of new chemical materials and relates to a photocatalytic type self-repairing super-hydrophobic coating and a preparation method thereof. The coating comprises the following materials: 10-50 percent of thermoplastic film-forming resin, 5-20 percent of low-surface energy material, 1-10 percent of photocatalytic active nano particles, 5-40 percent of hydrophobicity nano particles and 20-60 percent of organic solvent. The preparation method comprises the following steps: firstly, allowing nano particles to be subjected to fluorosilane modification to obtain the hydrophobicity nano particles; then, weighing all components of the coating for mixing, and performing high-speed shearing dispersing to obtain the coating provided by the invention. The coating can be applied to the surfaces of base materials such as steel material, aluminium alloy, plastic and composite in the way of brushing, spraying and the like, and a lotus leaf type super-hydrophobic coating can be obtained through drying. The coating can realize super-hydrophobic self-repairing through UV irradiation after being polluted by organic pollutant or subjected to mechanical wear by external forces, so that the coating has extremely good super-hydrophobic performance and perdurability, and the long-term using performance under the outdoor environments is also ensured.
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Description

Technical field

[0001] The invention belongs to the technical field of new chemical material preparation, and specifically relates to the composition of a photocatalytic self-healing superhydrophobic coating and its preparation method. Background technique

[0002] Superhydrophobic coatings have very unique properties and have potential application value in many fields (such as self-cleaning, anti-icing, anti-corrosion and anti-fouling, etc.). However, the durability of existing superhydrophobic coatings is poor. They can easily lose their superhydrophobic properties after being contaminated by external friction, sunlight, or oily pollutants, which limits the long-term use of superhydrophobic coatings in outdoor environments. Therefore, in recent years, research on the preparation of durable superhydrophobic coatings has received increasing attention. Giving the coating surface self-healing properties similar to lotus leaves is the best way to achieve the durability of super...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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