Preparation method and application of super-hydrophobic nanofibers of coral structure

Abstract

The invention provides nanofibers of a coral structure. The nanofibers are characterized in that the diameters of the nanofibers are 10-500 nm, and the lengths of the nanofibers are over 1 micrometer. Protrusions evenly distributed are formed on the surfaces of the nanofibers, the diameters of the protrusions are 1-200 nm, and the lengths of the protrusions are 1-500 nm. The invention further provides a super-hydrophobic material which is characterized by comprising the nanofibers of the coral structure. The contact angle of the surface of the hydrophobic material is larger than 150 degrees, and the rolling angle is smaller than 5 degrees.

Description

technical field [0001] The invention relates to a superhydrophobic coral structure nanofiber and a preparation method thereof. Background technique [0002] Superhydrophobic material is a material that repells water. Water droplets cannot slide and spread on its surface and keep rolling in a spherical shape, so as to achieve the effect of rolling self-cleaning. The lotus leaf in nature is a typical representative of this material. Due to the special wettability of this material, it has a wide range of potential applications in the fields of self-cleaning, anti-corrosion, anti-fog, and fluid drag reduction. Studies have found that high roughness and low surface free energy on the surface of the material are two necessary conditions for realizing its superhydrophobicity (L. Feng, et al, Adv. Mater. 2002, 14, 1857-1860.) . At present, the methods for preparing organic superhydrophobic surfaces mainly include: engraved candle method, electrostatic spraying method, phase separ...

AI Technical Summary

Problems solved by technology

Most of the reported superhydrophobic surface preparation processes involve the use of relatively expensive low-surface-energy substances, such as fluorine- or silane-containing compounds, to reduce the surface energy of the surface, and many methods involve specific equipment, harsh conditions and a long period, it is difficult to be used in the preparation of large-area superhydrophobic surfaces

Several existing preparation methods are not only complicated but also costly, and it is not convenient to prepare a large number of superhydrophobic materials in actual production and life, and there are few methods that can be used for large-scale application production (a) B. Qian, et al, Langmuir .2005,21,9007-9009; b) J.Y.Shiu, et al, Chem.Mater.2004,16,561-564; c) L.B.Zhu, et al, Langmuir.2005,21,11208-11212; d) G.Zhang , et al, Langmuir.2005, 21, 9143-9148.)

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