Lorenz B, Rodriguez N, Mangiagalli P, Persson B N J
FZ-Jülich, PGI, D-52425, Jülich, Germany.
Eur Phys J E Soft Matter. 2014 Jun;37(6):12. doi: 10.1140/epje/i2014-14057-6. Epub 2014 Jun 27.
The fluid flow through a seal interface depends on the percolating non-contact channels morphology, size and length, and on the interfacial surface energies. In particular, hydrophobic interfaces may expel fluids and decrease the fluid flow of seals, while increasing the sliding friction. We present results of interfacial fluid flow experiments on a hydrostatic column device which demonstrate how interfacial hydrophobicity can block fluid flow at interfaces and reduce the leak rate of seals. The presented results may help to understand the role of interfacial hydrophobicity in many practical applications, some of which we discuss briefly in this paper, e.g., rubber wiper blades on hydrophobic (usually wax-coated) glass, the locomotion of insects on surfaces in water, and syringes.
通过密封界面的流体流动取决于渗透非接触通道的形态、尺寸和长度，以及界面表面能。特别是，疏水界面可能会排出流体并减少密封件的流体流动，同时增加滑动摩擦。我们展示了在静压柱装置上进行的界面流体流动实验结果，这些结果表明界面疏水性如何能够在界面处阻止流体流动并降低密封件的泄漏率。所展示的结果可能有助于理解界面疏水性在许多实际应用中的作用，本文将简要讨论其中一些应用，例如，疏水（通常涂蜡）玻璃上的橡胶刮水器叶片、昆虫在水面上的移动以及注射器。
