Wei Jinfei, Liang Weidong, Zhang Junping
Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Nanomaterials (Basel). 2023 Jun 16;13(12):1872. doi: 10.3390/nano13121872.
Superamphiphobic coatings have widespread application potential in various fields, e.g., anti-icing, anti-corrosion and self-cleaning, but are seriously limited by poor mechanical stability. Here, mechanically stable superamphiphobic coatings were fabricated by spraying the suspension composed of phase-separated silicone-modified polyester (SPET) adhesive microspheres with fluorinated silica (FD-POS@SiO) on them. The effects of non-solvent and SPET adhesive contents on the superamphiphobicity and mechanical stability of the coatings were studied. Due to the phase separation of SPET and the FD-POS@SiO nanoparticles, the coatings present a multi-scale micro-/nanostructure. Combined with the FD-POS@SiO nanoparticles of low surface energy, the coatings present outstanding static and dynamic superamphiphobicity. Meanwhile, the coatings present outstanding mechanical stability due to the adhesion effect of SPET. In addition, the coatings present outstanding chemical and thermal stability. Moreover, the coatings can obviously delay the water freezing time and decrease the icing adhesion strength. We trust that the superamphiphobic coatings have widespread application potential in the anti-icing field.
超双疏涂层在防冰、防腐和自清洁等各个领域具有广泛的应用潜力，但却受到机械稳定性差的严重限制。在此，通过将由相分离的有机硅改性聚酯（SPET）粘合剂微球与氟化二氧化硅（FD-POS@SiO）组成的悬浮液喷涂在其上，制备出了机械稳定的超双疏涂层。研究了非溶剂和SPET粘合剂含量对涂层超双疏性和机械稳定性的影响。由于SPET与FD-POS@SiO纳米颗粒的相分离，涂层呈现出多尺度的微/纳米结构。结合低表面能的FD-POS@SiO纳米颗粒，涂层呈现出优异的静态和动态超双疏性。同时，由于SPET的粘附作用，涂层呈现出优异的机械稳定性。此外，涂层还具有优异的化学和热稳定性。而且，涂层能够显著延迟水的冻结时间并降低结冰粘附强度。我们相信，这种超双疏涂层在防冰领域具有广泛的应用潜力。
