Wei Zhen, Zhang Fangyuan, Dai Fei, He Qiang
College of Mechanical and Electrical Engineering, Gansu Agricultural University, Gansu, Lanzhou 730070, China.
College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Sichuan, Guanghan 618307, China.
ACS Omega. 2023 Feb 23;8(9):8548-8556. doi: 10.1021/acsomega.2c07241. eCollection 2023 Mar 7.
The preparation methods of the superhydrophobic surface play an important role in its application, but most of the existing preparation methods are complicated in operation, high in cost, and polluting to the environment. In order to find a simple, rapid, low-cost, and nonenvironmentally polluting preparation method of the superhydrophobic surface, this paper used liquid silicone rubber as the carrier. Before the liquid silicone rubber was nearly cured, it was evenly covered with a layer of silicon dioxide powder, and then 5 N weight was used to compact the powder on the rubber surface, so that the superhydrophobic surface was quickly formed on its surface. The wettability, bouncing performance, self-cleaning performance, and bending durability of liquid silicone rubber before and after treatment were compared. The results show that the static contact angle and rolling angle of the liquid silicone rubber after powder pressing were 158.22 ± 2.01° and 1.00 ± 0.50°, respectively. Moreover, the superhydrophobic surface formed by the powder pressing method had good self-cleaning performance, high temperature resistance, bending resistance, and excellent droplet bounce performance. The strategy of preparing a superhydrophobic surface by a one-step powder pressing method may be applied to the preparation of the superhydrophobic surface on a large scale.
超疏水表面的制备方法对其应用起着重要作用，但现有的大多数制备方法操作复杂、成本高且对环境有污染。为了找到一种简单、快速、低成本且无污染的超疏水表面制备方法，本文以液体硅橡胶为载体。在液体硅橡胶接近固化前，在其表面均匀覆盖一层二氧化硅粉末，然后用5 N的重物将粉末压实于橡胶表面，从而在其表面快速形成超疏水表面。对比了处理前后液体硅橡胶的润湿性、弹跳性能、自清洁性能和弯曲耐久性。结果表明，粉末压制后液体硅橡胶的静态接触角和滚动角分别为158.22±2.01°和1.00±0.50°。此外，通过粉末压制法形成的超疏水表面具有良好的自清洁性能、耐高温性、耐弯曲性和优异的液滴弹跳性能。一步粉末压制法制备超疏水表面的策略可能适用于大规模制备超疏水表面。
