A photocatalytic self-healing superhydrophobic coating and its preparation method

A technology of super-hydrophobic coatings and super-hydrophobic coatings, applied in the direction of polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of no self-healing, super-hydrophobic performance, etc., and achieve simple preparation process and recovery Super-hydrophobic performance, the effect of ensuring long-term serviceability
CN103409028BActive Publication Date: 2017-11-17FUDAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUDAN UNIV
Publication Date
2017-11-17

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Abstract

The invention belongs to the technical field of new chemical materials, and relates to a composition of a photocatalytic self-repairing superhydrophobic coating and a preparation method thereof. The coating of the present invention consists of 10-50% of thermoplastic film-forming resin; 5-20% of low surface energy substances; 1-10% of photocatalytically active nanoparticles; 5-40% of hydrophobic nanoparticles and 20-60% of organic solvents % composition, and the preparation process is as follows: firstly modify the nanoparticles with fluorosilane to obtain hydrophobic nanoparticles, then weigh each component of the coating, mix, and then disperse at high speed for 2-4 hours to obtain the coating of the present invention . The paint can be applied to the surface of steel, aluminum alloy, plastic, composite materials and other substrates by brushing, spraying, etc., and will form a lotus leaf-shaped super-hydrophobic coating after drying. The resulting superhydrophobic coating can achieve superhydrophobic self-healing through UV irradiation after being polluted by organic pollutants or subjected to external mechanical wear, thus endowing the coating with excellent superhydrophobic durability and ensuring its long-term durability in outdoor environments. Use performance.
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Description

technical field

[0001] The invention belongs to the technical field of preparation of new chemical materials, in particular to a composition of a photocatalytic self-repairing super-hydrophobic coating and a preparation method thereof. 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 the existing superhydrophobic coatings is poor, and they are easy to lose superhydrophobic properties after being subjected to external friction, sunlight or oily pollutants, which limits the long-term use of superhydrophobic coatings in outdoor environments. Therefore, in recent years, more and more attention has been paid to the preparation of durable superhydrophobic coatings, and the best way to achieve the durability of superhydrophobic coatings is to endow the coatings with surface self-healing properti...

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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