Data Analysis on Fabrication of the Super-hydrophobic Stainless Steel Needle with Faired Properties

摘要

Many creature surfaces owe to the exitance of the unusual microstructures that could influence their wet ability, these microstructures also provide a new idea for fabricating function materials. In this paper, the super-hydrophobic structures were successfully built on the surface of stainless steel needle by a simple technique combining of chemical etching and molecules modification. After the etching reaction, porous microstructures were created on the stainless steel needle surface. By modifying 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane, the stainless steel needle showed a good super-hydrophobic property with a contact angle (CA) greater than 150°. Moreover, the stainless steel needle revealed obvious faired activity in resistance test. The result shows that the faired property of the super-hydrophobic needle is better than the hydrophobic one. The as-obtained needle with both super-hydrophobic and faired properties has the potential application in modern medical devices.