Effect of Tier Surface Structure on Non‐wetting Materials and Robust Superamphiphobic Surface

Abstract

Surface structure is a key factor for the non-wettability, that's because different surface tier structure can catch different numbers of air-pockets. The weak hierarchical surface structure limits the application of non-wetting materials. In this work, the different tier structure Te@C, Te@C-SiO 2 , SNTs are prepared to characterize the influence of tier structure on the nonwettability and N 2 adsorption-desorption isotherms are used to characterize the air-pockets. The aluminum dihydrogen phosphate is used to strength the robustness of SiO 2 NTs superamphiphobic surface. The results indicate that the more tiers of surface structure have a higher S BET , higher S BET ensure enough air-pockets, which can make more contributions to the non-wettability. The prepared robust superamphiphobic surface shown extreme robustness, and after 50 cycles of sandpaper abrasion, it is still super-repellent to hexadecane.

Fabrication of durable superamphiphobic PA‐66 fabrics with wear‐resistance performance

“…Among them, the superamphiphobic surfaces have contact angles greater than 150 • and sliding angles less than 10 • for both water and low-surface-tension organic liquids [2]. Therefore, superamphiphobic surfaces are very promising in many applications, including those requiring self-cleaning [3,4], super-antiwetting [5,6], corrosion resistance [7,8], antifreezing [9] and liquid separation [10]. It is well-recognized that the combination of materials with extremely low surface free energy and hierarchical micro-nano dual scale structures is crucial for the preparation of superhydrophobic surfaces [2,11].…”