| 초록 |
Robust transparent mechanically durable superhydrophobic coatings are highly sought in day-to-day life as well as in industry over the years due to their various applications. In this study, superhydrophobic coatings were developed based on the hybrids consisting of polyurethane acrylates (PUA), fluorinated hyperbranched amines (F-HBA) and a small amount of hydrophobically modified silica nanoparticles, Structure and performance properties of the coating materials were characterized by FTIR, DMA, FESEM, AFM and WCA analysis. It was demonstrated that the PUA and F-HBA can form a crosslinked network with low surface energy via the aza-Michael addtion reactions, and presence of the silica nanoparticles provide surface roughness. The coatings showed a water contact angle as high as 150° along with fairly good optical transparency. It was also revealed that such superhydrophobicity was maintained after repeated mechanical abrasion using a sandpaper. |
