Preparation and Properties of Triazine Dithiol-Silane Composite Self-Assembled Hydrophobility Films on Stainless Steel Surfaces

Abstract:

Self-assembled method for controllable fabrication of a hydrophobic triazine dithiol-silane composite film on 304 stainless steel (SS) is reported in this paper. Hierarchical structure composed of micro/nanofeatherlike surface was obtained by acid etching. After modification with 2-( Dibutylamino )-4,6-dimercapto-1,3,5-triazine ( DB ) and n-octadecyltrichlorosilane ( OTS ), the suface became hydrophobicity. By applying SEM, FTIR-RAS, and water contact angle analysis, the surface morphology and hydrophobicity of the as-prepared surfaces were studied in detailed. The results indicated that at the optimal condition, the surface showed a good hydrophobicity with a water contact angle as high as 152±3°. Possible growth mechanism of featherlike hierarchical structure was discussed. Additionally, the anticorrosion effect of the hydrophobic surface was studied by potentiodynamic polarization measurement. It showed that the surface covered with hydrophobic composite film was found to be more positive than bare and monolayer, the corrosion current was significantly lower to 1.68 nA/cm², and the corrosion potential shifted positively from-253 mV to-118 mV ( vs SEC ).

• Periodical: Materials Science Forum (Volumes 809-810)
• Pages: 554-562
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.809-810.554
• Online since: December 2014
• Authors: Ming Ming Hu, Dong Ming Zhang*
• Keywords: 304 Stainless Steel, Corrosion, Hydrophobic, Self-Assemble

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