Zhang Zhen, Chang Haozhe, Wang Peng, Zhang Guojun
School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China; Guangdong Intelligent Robotics Institute, Dongguan, Guangdong 523808, China; Guangdong HUST Industrial Technology Research Institute, Guangdong Provincial Key Laboratory of Digital Manufacturing Equipment, Dongguan, Guangdong 523808, China; Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Development Center, Mianyang, Sichuan, 621000, China.
School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
J Colloid Interface Sci. 2025 Feb;679(Pt A):476-486. doi: 10.1016/j.jcis.2024.09.221. Epub 2024 Sep 30.
High temperature resistant and self-cleaning superhydrophobic flexible film has potential application value in lunar exploration. In this paper, a novel method of magnetic field-assisted ultrafast laser induced plasma was proposed to fabricate strongly superhydrophobic graphene on polyimide film with multi-level micro-nano structure. The longitudinal magnetic field contributed to constrain the induced plasma in the lateral direction so as to form a plasma plume with high temperature and high energy density. The multi-level micro-nano graphene structures with better ordering and superhydrophobicity were fabricated, which had a contact angle of 163.1° and a roll-off angle of 1.5°, as well as hydrophobic CC bond content of 72.82 %. The droplets can achieve obvious bouncing at different heights of 1 cm and 5 cm on surfaces at different angles of 0°, 5° and 10°. The contact angle was still greater than 160° after 25 days of aging treatment and heating at 300 °C for 40 min. The water droplets before and after the heating of the sample can push the dust off the surface, showing excellent high temperature resistance and self-cleaning performance.
耐高温自清洁超疏水柔性薄膜在月球探测中具有潜在的应用价值。本文提出了一种磁场辅助超快激光诱导等离子体的新方法，以在具有多级微纳结构的聚酰亚胺薄膜上制备强超疏水石墨烯。纵向磁场有助于在横向约束诱导等离子体，从而形成具有高温和高能量密度的等离子体羽流。制备出了具有更好有序性和超疏水性的多级微纳石墨烯结构，其接触角为163.1°，滚落角为1.5°，疏水CC键含量为72.82%。液滴在0°、5°和10°不同角度的表面上，在1 cm和5 cm的不同高度处都能实现明显的弹跳。经过25天的老化处理和在300℃加热40分钟后，接触角仍大于160°。样品加热前后的水滴都能将灰尘从表面推开，表现出优异的耐高温和自清洁性能。
