| XU Wen-ting,FU Ping-an,OU Jun-fei.Research Progress on Durable Superhydrophobic Surfaces[J],52(11):23-39 |
| Research Progress on Durable Superhydrophobic Surfaces |
| Received:September 28, 2023 Revised:November 07, 2023 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2023.11.002 |
| KeyWord:robust bio-inspred surface self-healing armoured surface |
| Author | Institution |
| XU Wen-ting |
School of Materials Engineering, Jiangsu University of Technology, Jiangsu Changzhou , china |
| FU Ping-an |
School of Materials Engineering, Jiangsu University of Technology, Jiangsu Changzhou , china |
| OU Jun-fei |
School of Materials Engineering, Jiangsu University of Technology, Jiangsu Changzhou , china |
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| Abstract: |
| Superhydrophobic surfaces have emerged as an exciting area of research with immense potential in various fields. These surfaces, when designed correctly, can repel water to an extraordinary extent and find applications in oil-water separation, corrosion protection, waterproofing, and anti-icing. However, their practical application has been hindered by a lack of durability. The failure of superhydrophobic surfaces can be attributed to two main factors. Firstly, the rough surface structure is susceptible to damage under high local pressure when subjected to mechanical loads. The microstructure, which is the physical foundation of the superhydrophobicity, can be easily crushed or deformed under stress. Secondly, the low surface energy molecules, which are the chemical basis of the superhydrophobicity, tend to decompose and deteriorate when exposed to stimuli such as high temperature, light, and strong oxidants. As a result, the surface's superhydrophobicity diminishes over time. To address these challenges and enhance the durability of superhydrophobic surfaces, several strategies have been proposed. (1) The first strategy involves the construction of elastic substrates. By using elastic materials as substrates, the load on the microstructure can be transferred to the matrix, reducing the likelihood of damage. This approach ensures that the superhydrophobic surface remains intact even under mechanical stress. (2) The second strategy is microstructure protection. A protective shield can be constructed to safeguard the delicate micro/nanostructures from damage. This rigid shield acts as a barrier, shielding the micro/nanostructures from external forces or harsh conditions. Using materials with high mechanical strength and chemical stability prevents the degradation of the micro/nanostructure. (3) The third strategy is utilizing an adhesive+coating. By using an intermediate layer, the adhesion between the substrate and surface micro/nanostructures can be enhanced. This adhesive layer improves the overall durability of the superhydrophobic surface by providing additional support and stability. (4) The fourth strategy involves the use of self-healing materials. Superhydrophobic surfaces can be made from low surface energy materials with self-healing capabilities. These materials can restore their superhydrophobicity even after the surface has been damaged or compromised. This property ensures that the surface can maintain its water-repellent properties over a longer period. (5) The fifth strategy is the reconstruction of microstructures. This approach involves repairing or replacing the damaged microstructures to restore the surface's superhydrophobic properties and performance. Looking ahead, the development of durable superhydrophobic surfaces holds great promise. It offers new opportunities for green and sustainable solutions in various industries. By incorporating the aforementioned strategies, researchers and engineers can create superhydrophobic surfaces that are not only highly efficient but also long-lasting and resilient. These durability enhancement strategies pave the way for the practical implementation of superhydrophobic surfaces in real-world applications, enabling their widespread use and impact. This will contribute to the development of green and sustainable technologies for a wide range of applications. In conclusion, the development of durable superhydrophobic surfaces is crucial for advancing the fields of oil-water separation, corrosion protection, waterproofing, and anti-icing. By addressing the challenges related to surface durability through strategies such as constructing elastic substrates, microstructure protection, adhesive+coating, utilizing self-healing materials, and reconstructing microstructures, the practical application of superhydrophobic surfaces can be significantly enhanced. This will contribute to the development of green and sustainable technologies for a wide range of applications. |
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