铜基底超疏水薄膜的制备

Fabrication of Super-hydrophobic Films on Copper Substrate

利用溶液浸泡法在金属铜基底上制备了超疏水薄膜。通过铜与氨水的反应,构建了粗糙结构,再经过硬脂酸的修饰,实现了超疏水。研究了反应时间对薄膜超疏水性能的影响,结果表明,当反应时间为12 h时具有较好的效果,接触角可达156°。扫描电子显微镜(SEM)显示铜表面生成了不规则的微米尺度的粒子,X射线衍射(XRD)分析表明微粒的化学成分为氧化铜,该超疏水薄膜还具有良好的热稳定性。

Super-hydrophobic films were prepared on copper substrates using solution-immersion method. Rough structure was constructed by the reaction of copper and ammonia and after modified with stearic acid, super-hydrophobic films could be achieved. The influence of reaction time to the hydrophobicity of the resulting surfaces was studied. The results showed that the contact angle could be as high as 156° when the reaction time was 12 hours. The scanning electron microscope （SEM） showed that irregular millimeter-sized panicles were built on copper surface. The analysis of X-ray diffraction （XRD） indicated that the panicles were made from copper oxide. The super-hydrophobic films possess excellent thermal stability.