A super-hydrophobic anti-icing aviation aluminum alloy surface with ultralow ice adhesion is composed of a multi-stage micro-nano structure, the micro-nano structure is based on a three-dimensional micron cone structure periodically distributed on the surface of an aluminum alloy base material, and densely-growing nanosheets and nano flower clusters composed of the nanosheets are distributed on the surface of a micron cone; and one or two of submicron spheres and submicron flowers are dispersed and distributed on the surface of the micron cone or between the micron cones. The invention furtherdiscloses a production method of the surface, the surface is formed by combining ultrafast laser ablation and a wet chemical method and then carrying out low-free-energy surface chemical modification, and large-area efficient production can be achieved. The aviation aluminum alloy anti-icing surface has extremely low ice adhesion, adhesion strength between ice and the surface can be as low as 6 kPa, and the ice can automatically fall off under the action of self gravity or slight vibration. The surface structure can be widely applied to anti-icing fields of aviation key components, ships, ground transportation tools, refrigerators, air conditioners and the like.
一种超低冰粘附力的超疏水抗结冰航空铝合金表面,该表面由多级微纳结构组成,该微纳结构以周期分布在铝合金基材表面的三维微米锥结构为基础,在微米锥表面分布有密集生长的纳米片和由纳米片组成的纳米花簇;且在微米锥表面或在微米锥与微米锥之间弥散分布有亚微米球和亚微米花中的一种或两种。本发明还公布了该表面的制备方法,由超快激光烧蚀与湿化学法相结合,再经低自由能表面化学修饰而成,可实现大面积高效制备。本发明的航空铝合金抗结冰表面具有极低的冰粘附力,冰与表面之间的粘附强度可低至6kPa,冰在其自身重力作用下或轻微震动下能自行脱落。该表面结构可广泛应用于航空关键构件、船只、地面运输工具、冰箱和空调等防冰领域。
Super-hydrophobic anti-icing aviation aluminum alloy surface and production method
一种超疏水抗结冰航空铝合金表面及制备方法
2020-10-30
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
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