Super-hydrophobic self-cleaning coating for building

Abstract

The invention relates to a super-hydrophobic self-cleaning coating for a building. The coating is prepared by dispersing and mixing 2-10% by mass of heptafluorodecyl triethoxysilane, 1-10% by mass ofmethyl triethoxysilane, 1-10% by mass of perhydropolysilazane, 2-15% by mass of solid microparticles and the balance a solvent. The super-hydrophobic self-cleaning coating for the building has the advantages that the super-hydrophobic self-cleaning coating is stable in super-hydrophobic property and unlikely to age and lose effect, and can work normally in severe working conditions such as acid, alkali, high temperature and strong ultraviolet rays; and the super-hydrophobic self-cleaning coating can be cured at a constant temperature, is not high in construction condition and is suitable for various buildings.

Description

technical field [0001] The invention relates to a super-hydrophobic self-cleaning coating for buildings. The super-hydrophobic self-cleaning coating can be formed by curing at normal temperature after being coated with the super-hydrophobic self-cleaning coating on the surface of buildings. Background technique [0002] Wettability is an important property of a solid surface, and is generally characterized by the contact angle between a droplet and a solid surface. When the contact angle between a water droplet and a solid surface is greater than 150°, the solid surface is called a superhydrophobic surface. For example, the leaf surfaces of various plants represented by lotus leaves, the feathers of water birds, etc. Superhydrophobic materials have many unique surface properties, such as self-cleaning, superhydrophobicity, etc., so they have broad application prospects in production and life, such as self-cleaning building surfaces. [0003] In recent years, superhydrophob...

AI Technical Summary

Problems solved by technology

Although the above methods can prepare super-hydrophobic surfaces, the process of most methods is relatively complicated, and most of them require special equipment, and the energy consumption and cost are relatively high, which is not conducive to the construction of building surfaces.

In addition, the superhydrophobic surface prepared by the existing methods generally has the disadvantages of not being stable enough, easy to age, easy to fail, and less resistant.