超疏水表面抗结冰性能研究进展

阐述了近期国内外对超疏水表面抗结冰的研究进展,以期弄清这种特殊浸润性表面的抗结冰性能。发现必须根据超疏水表面的微结构类型判断其能否抗结冰,而不能只依据接触角进行笼统的判断。有些超疏水表面,其抗结冰能力随着结冰-融冰循环次数的增加而下降。在低温高湿条件下,很多超疏水表面的抗结冰能力会因水蒸气在表面微纳结构的间隙内冷凝而恶化.因此,设计机械强度高的超疏水表面(耐结冰融冰循环)、或能使冷凝水滴在其上自迁移的新型超疏水表面、或者简单地在固体表面沉积一层光滑牢固的疏冰涂层,或许是制备持久抗结冰表面的现实、可靠选择。

Research Progress on Anti-icing Performance of Superhydrophobic Surfaces

The studies of ice accretion on superhydrophobic surfaces(SHS) in recent years were reviewed in this paper.The conclusion is that the detailed surface structure is very important in deciding whether SHS are really icephobic and judgment by contact angle alone is not sufficient.The ice-repellent properties of some SHS can deteriorate after icing/deicing cycles.The anti-icing efficiency of SHS can significantly lower in a humid atmosphere because water vapour condenses in the interspace between surface protrudes.Thus designing SHS with strong microstructure,or on which condensed water droplets could spontaneously move away,or simply depositing smooth coat with low ice adhesion strength,may be realistic and reliable selects in preparing anti-icing surfaces with long durability.