Nowadays, scalable manufacturing of superamphiphobic surfaces by a simple and efficient method remains challenging. Herein, we developed a facile and efficient strategy for constructing superamphiphobic surfaces on Cu substrates, including press molding, oxidation, and fluorination modification. The prepared superamphiphobic surface not only has repellency and low viscosity to water, ethylene glycol, and 30% ethanol (surface tension: 33.53 mN• m −1 ) but can also achieve excellent self-cleaning properties through these liquids. Scanning electron microscopy images revealed that this superamphiphobic surface had multiple hybrid structures, including microflowers, nanoneedles, and micropillar arrays. Owing to the high chemical stability of the C−F group, the obtained surface also exhibited excellent corrosion resistance. The preparation method of superamphiphobic surfaces with all these advantages does not require complicated equipment and has great advantages in terms of low cost and high efficiency, which not only endows this method with broad application prospects but is also makes it suitable for industrial scalable production.
Superhydrophobic coatings help to reduce the surface contamination of glass and improve its performance. A SiO2 nanoparticles superhydrophobic surface with tunable adhesion is obtained on a glass substrate after modifying with PDMS. With the water contact angle of 155.1 ± 3°, the superhydrophobic surface also shows excellent self-cleaning property, good durability and thermal stability. This method is facile, cost-effective and easy to operate and will expand the potential applications of glass materials in different fields.
A facile and cost-effective layer-by-layer assembly method is reported for the fabrication of a superhydrophobic coating using room temperature vulcanized silicone rubber and silica particles of different diameters. The superhydrophobic coating shows a contact angle of 154.6° and a rolling angle of 9°. The coating exhibits excellent self-cleaning properties and corrosion resistance with good softness and mechanical durability. The sample maintains its good superhydrophobicity, even after a series of tests by knife scratching, cutting, and hammering. The fabrication method has great advantages in terms of efficiency, cost, simple procedure and conditions. Its wide application in different substrates and the use of environment-friendly materials are also beneficial to the large-scale production of the coating.
Superhydrophobic surfaces are fragile and are prone to failure in harsh outdoor environments. The preparation of robust superhydrophobic surfaces with stable performance and excellent properties can extend their application. In this paper, we report a simple and cost-effective method to prepare a superhydrophobic block using superhydrophobic zinc oxide powder and die pressing. The prepared sample has a contact angle of 163° and a sliding angle of 7°. Tests show that the superhydrophobic block can resist the impact of water flow, maintain its superhydrophobicity after friction or knife scraping, and quickly repair the destroyed surface by sandpaper abrasion. The sample exhibited excellent self-cleaning effect, robust mechanical property, and rapid repairability. This preparation method is also environmental-friendly and easy to operate. It will have a wide application prospect in many important fields.
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