Zhou Shuangquan, Hu Yayue, Huang Yao, Xu Hong, Wu Daming, Wu Dong, Gao Xiaolong
College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
Polymers (Basel). 2023 Dec 21;16(1):43. doi: 10.3390/polym16010043.
In recent years, superhydrophobic surfaces have attracted significant attention due to their promising applications, especially in ice prevention, reduction in air resistance, and self-cleaning. This study utilizes femtosecond laser processing technology to prepare different surface microstructures on polytetrafluoroethylene (PTFE) surfaces. Through experiments, it investigates the relationship between the solid-liquid contact ratio and surface hydrophobicity. The shape of water droplets on different microstructure surfaces is simulated using ANSYS, and the relationship between surface microstructures and hydrophobicity is explored in the theoretical model. A superhydrophobic surface with a contact angle of up to 166° was obtained by machining grooves with different spacings in polytetrafluoroethylene sheets with femtosecond laser technology. Due to the micro- and nanostructures on the surface, the oleophobicity of the processed oleophilic PTFE surface is enhanced.
近年来，超疏水表面因其具有广阔的应用前景而备受关注，尤其是在防冰、降低空气阻力和自清洁方面。本研究利用飞秒激光加工技术在聚四氟乙烯（PTFE）表面制备不同的表面微观结构。通过实验，研究了固液接触比与表面疏水性之间的关系。使用ANSYS模拟了不同微观结构表面上水滴的形状，并在理论模型中探讨了表面微观结构与疏水性之间的关系。通过飞秒激光技术在聚四氟乙烯片材上加工不同间距的凹槽，获得了接触角高达166°的超疏水表面。由于表面的微纳结构，加工后的亲油PTFE表面的疏油性增强。
