防冰疏水微结构表面的设计

Surface design for anti-icing and hydrophobic micro-structures

微结构表面具有出色的防水自净性能以及减阻性能,但目前超疏水微结构表面设计制备思路欠缺系统性,很多制备方法也比较复杂,在工程实践方面缺乏指导性。从工程制备的角度,概述了微结构表面设计的经典理论模型和国内外对微结构几何设计的理论研究,探究常用工程材料的理论本征接触角,通过力学平衡分析方法计算仿真确定疏水微观结构几何尺寸、几何截面外形,提出截面线长度及尺寸系数两个疏水微结构设计的参数,归纳了设计疏水微结构的流程,为制备疏水微结构或微结构模具提供理论基础。

Micro-structure surfaces have excellent performances in waterproof self-purification and drag reduction.However,current approaches for preparation of hydrophobic surfaces are complex and not systematic,limiting their further development and wider application.From the perspective of engineering preparation,this paper summarizes the classical theoretical models for the design of micro-structure surfaces and the theoretical studies on the geometrical design of microstructures at home and abroad.Intrinsic contact angle of common engineering materials through balance force analysis and computational simulation,determining the size of hydrophobic microstructure,the shape of the cross section is explored.Section line length and two size coefficients of designing hydrophobic microstructure and summarize the design process of hydrophobic microstructures are put forward,providing a theoretical foundation for the preparation of hydrophobic microstructure or mould.