长效超疏水铜表面的构建及耐磨性和自清洁性能

Construction of Long-acting Superhydrophobic Copper Surface and Its Wear Resistance and Self-cleaning Performance

中文关键词: 铜 超疏水 耐磨性 稳定性 自清洁

英文关键词: copper, superhydrophobic, wear resistance, stability, self-cleaning

中文摘要:

      改善超疏水表面的普适性、稳定性和耐磨性是超疏水材料实用化的前提。本研究通过水热反应和表面修饰成功制得接触角达156.2°、滚动角为3~4°的铜基超疏水表面。利用接触角测量、扫描电镜观察、XRD测试、红外光谱和EDS分析对超疏水铜表面的润湿性能、表面微结构、相结构和化学结构进行了分析表征。结果表明:所制备的超疏水表面是由大量Cu₂S晶粒堆积形成的微纳米二元结构及接枝的疏水长链构成,二者共同赋予铜基超疏水表面广泛的普适性和良好的稳定性。同时,该超疏水表面具有良好的耐磨性和优异的自清洁性能。本工作对此项性能产生的原因和机理进行了分析探讨,以期为超疏水材料在实际生产和生活中的应用奠定基础。

英文摘要:

      It is a prerequisite that improving the universality, stability, and wear resistance of superhydrophobic materials for the practical applications. In this study, copper-based superhydrophobic surface with a contact angle of 156.2° and a rolling angle of 3—4° was prepared successfully by hydrothermal reaction and surface modification. The wettability, surface microstructure, phase structure, and chemical structure of superhydrophobic copper surface were characterized by contact angle measurement, SEM observation, XRD test, FT-IR and EDS analyses. Results showed that the as-prepared superhydrophobic surface was composed of a large number of Cu₂S crystals grafted with long hydrophobic chains, and which lead to the surface presents micro- and nano-scaled binary structure. Consequently, the copper-based superhydrophobic surface was endowed with a wide range of universality and good stability. Meanwhile, the superhydrophobic surface exhibited good wear resistance and excellent self-cleaning performance. These provide a foundation for the practical application of superhydrophobic materials.