Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, People's Republic of China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, People's Republic of China.
Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, People's Republic of China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, People's Republic of China.
J Colloid Interface Sci. 2018 Feb 15;512:239-248. doi: 10.1016/j.jcis.2017.10.061. Epub 2017 Oct 18.
A simple way of chemical etching with HSO and HO was employed to prepare a superhydrophobic steel surface with a water contact angle of 163.5° and a sliding angle of about 0°, in addition to modification with 1H,1H,2H,2H-perfluoroalkyltriethoxysilane (FAS-13). On the basis of perfluropolyethers (PFPE) infusion, a slippery liquid-infused porous surface (SLIPS) was fabricated that had a water contact angle of 115.6° and a sliding angle of 2.27°. The prepared sample can still maintain superhydrophobicity after moving 100 cm on 1000 # sandpaper under 100 g loading via an abrasion test, while its corrosion resistance was exhibited via more positive corrosion potentials (E) and lower corrosion current densities (I) in electrochemical corrosion tests with various solutions. Even if superhydrophobic and slippery properties were lost in the process of long-time soaking in salt solution, the superhydrophobic steel could regain its ability and slippery surfaces also exhibited the repairable durability through retreatment. Such stable, corrosion resistant and superhydrophobic bearing steel and repairable slippery surface have potential for application in practical production and life.
采用 HSO 和 HO 的简单化学蚀刻方法，结合 1H,1H,2H,2H-全氟代烷基三乙氧基硅烷（FAS-13）对其进行改性，成功制备了具有 163.5°水接触角和约 0°滑动角的超疏水钢表面。在全氟聚醚（PFPE）浸渍的基础上，制备了具有 115.6°水接触角和 2.27°滑动角的滑液注入多孔表面（SLIPS）。通过磨损试验，在 100g 负载下，1000#砂纸移动 100cm 后，制备的样品仍能保持超疏水性，而在各种溶液的电化学腐蚀试验中，其具有更高的腐蚀电位（E）和更低的腐蚀电流密度（I），表现出良好的耐腐蚀性。即使在长时间浸泡在盐溶液中导致超疏水和滑溜性能丧失的情况下，超疏水钢也能通过再处理恢复其能力，滑溜表面也表现出可修复的耐久性。这种稳定、耐腐蚀的超疏水轴承钢和可修复的滑溜表面在实际生产和生活中有应用的潜力。
