Hydrophobic and ice-retarding properties of doped silicone rubber coatings
Hydrophobic and ice-retarding properties of doped silicone rubber coatings
复制标题
DOI：
10.1016/j.apsusc.2012.11.042
复制
发表时间：
2013-01-15
影响因子：
6.7
通讯作者：
Kulinich, S. A.
中科院分区：
文献类型：
--
作者：
Arianpour, F.;Farzaneh, M.;Kulinich, S. A.
本研究采用己烷稀释悬浮液自旋涂覆在铝基上制备室温硫化硅橡胶涂层。不同数量的炭黑、二氧化钛或铈纳米粉末作为掺杂剂加入到涂层中，以改变其表面粗糙度、疏水性和电性能。通过改变沉积参数，可以制备超疏水表面。研究了小水滴在具有不同润湿迟滞值的纳米复合材料表面的冻结行为，并与未涂覆的抛光铝表面进行了比较。在-15℃左右，水滴在抛光铝表面冻结了大约5 s，而在掺杂了二氧化钛或二氧化铈的超疏水纳米复合材料表面上，它们的冻结时间延迟了12-13分钟。还观察了样品的润湿迟滞（和表面粗糙度）与水滴在其表面的冻结时间之间的相关性。结冰试验表明，在湿滞小的超疏水样品上，结冰延迟，粘着强度降低。爱思唯尔B.V.版权所有
In this study, room-temperature vulcanized silicone rubber coatings were prepared by spin-coating hexane-diluted suspensions onto aluminum substrates. Various amounts of carbon-black, titania or ceria nanopowders were incorporated to the coatings as dopants in order to modify their surface roughness, hydrophobic and electrical properties. By changing deposition parameters, superhydrophobic surfaces could be prepared. The freezing behavior of small water droplets was investigated on nanostructured composite surfaces exhibiting different values of wetting hysteresis and was compared with that on uncoated polished aluminum. At approximately -15 degrees C, the water droplets were found to freeze on polished aluminum after approximately 5 s, while their freezing was delayed to as long as similar to 12-13 min on superhydrophobic nanocomposite surfaces doped with ceria or titania powders. Correlations between the wetting hysteresis (and surface roughness) of the samples and freezing time of water droplets on their surfaces were also observed. Icing tests demonstrated delayed ice formation and lower adhesion strength on superhydrophobic samples with small wetting hysteresis. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.