Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (7): 1371.

• Articles • Previous Articles     Next Articles

Preparation of Aluminum Superhydrophobic Surface with Nano-Micro Mixed Structure by SDBS/HCl Etching Method

PAN Li-Ning, DONG Hui-Ru*, BI Peng-Yu   

  1. School of Science, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2008-10-14 Online:2009-07-10 Published:2009-07-10
  • Contact: DONG Hui-Ru. E-mail: donghr@mail.buct.edu.cn

Abstract:

The SDBS/HCl mixed solution was used to etch aluminum surface, and some nano-micro mixed structures were appeared on the surface. After modified by 1H,1H,2H,2H-perfluorodecyltriethoxysilane(FDTES), the aluminum surface was reached superhydrophobility, and the water contact angle was more than 160°. The SEM experimental results showed that the aluminum superhydrophobic surface was of nano-micro mixed structure. According to the phenomenon, the bubble assisted etching mechanism(pit-etching and dislocation etching) was used to primarily explain the cause of the two-step mixed structures. Moreover, the experiments of different pH and different exposure time showed the aluminum superhydrophobic was very stable.

Key words: Sodium dodecyl-benzenesulfonate; Nano-micro mixed structure; Aluminum; Superhydropobic

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