摘要
为了提高超疏水表面的结构稳定性,采用慢走丝电火花线切割技术在铝合金表面加工阵列微柱结构,结合电化学方法在微柱上沉积纳米颗粒,无需进一步修饰,直接得到超疏水表面。实验主要研究了电沉积时间对超疏水性能的影响,通过扫描电子显微镜,激光共聚焦显微镜,接触角测量仪等表征手段检测超疏水表面形貌和润湿特性,利用傅里叶变换红外光谱仪和能谱仪检测表面化学成分。结果表明,所制备的样品接触角能达到161.88°,滚动角只有3°,表现出极低的粘附性,相比于平面直接沉积结构更稳定,在外力作用下能维持更久的超疏水特性。该方法能实现对规则结构尺寸的可控性,应用范围广泛。
Aiming at improving the structural stability of the superhydrophobic surface,an array of micropillar structures was processed on the surface of the aluminum alloy by using low-speed electrical discharge wire-cutting(EDM)technology,and the nanoparticles were deposited on the micropillars in ctombination with electrochemical methods without further modification to directly obtain the superhydrophobic surface. The effect of electrodeposition time was mainly studied on superhydrophobic performance.The SEM,laser confocal microscope,contact angle measuring instrument were used to represent the morphology and wetting characteristics. FTIR and EDS were used to detect the surface chemical composition. The result shows that the contact angle of the sample can reach 161.88 °,and the rolling angle is only 3 °,perform extremely low adhesion,more stable than the direct deposition structure on the plane,and also can maintain longer superhydrophobic properties under external force. This method can realize the controllability of the regular structure size and has a wide range of applications.
作者
肖成龙
梁世雍
于兆勤
XIAO Chenglong;LIANG Shiyong;YU Zhaoqin(School of Mechanical and Electrical Engineering,Guangdong University of Technology,Guangzhou 510006,China)
出处
《电镀与精饰》
CAS
北大核心
2020年第7期27-32,共6页
Plating & Finishing
基金
广东省自然科学基金(2017A030313330)。
关键词
电火花线切割
电沉积
超疏水
阵列微柱
electrical discharge wire-cutting
electrodeposition
superhydrophobic
array microcolumn
