用化学刻蚀法构建铝合金基体二元三维微纳米表面结构,再经棕榈酸修饰,制备了仿生超疏水表面。水滴与表面接触角达157°,滚动角〈3°。用扫描电子显微镜(SEM)和X射线光电子能谱(XPS)表征其形貌和表面元素;并测试其防粘附性能,防结冰和结霜性能。结果表明,其疏水机理与Cassie模型相符,超疏水性能和防粘附性能良好,且结冰时间长,结霜量少。
There-dimensional and binary structures of aluminum alloy surface were fabricated by chemical etching method,after modification with palmitic acid.The as-prepared surface shows well super-hydrophobic property,with the water contact angle could reach up to 157° and sliding angle smaller than 3°.The images and elements of the as-prepared surface was investigated by scanning electron microscopy and X-ray photoelectron spectroscopy,simultaneously,the anti-adhesion of super-hydrophobic aluminum alloy surface was tested,as well as the anti-icing and anti-frosting characteristic were studied.The result indicates that the as-prepared super-hydrophobic surface meet the Cassie model,and all the as-prepare surface not only show good super-hydrophobic and anti-adhesion property,but has extend freezing time and less frosting feature.