Abstract Herein, slippery liquid infused porous surface (SLIPS) was prepared by a facile spraying method with co-introduction of silica sol and carbon nanotubes (CNTs) and subsequent oil infusion. Abundant micropores and nanopores were formed during the solvent evaporation and silica sol shrinkage in molten PVDF process, both of which functioned as reservoirs to hold oil. Then the effects of CNTs on oil-holding capability and corrosion inhibition mechanism were investigated in detail. The interaction between SiO2 nanoparticles and CNTs endowed original hierarchical structures with more abundant morphologies and micropores quantities increasing. These two factors synergistically enhanced oil-locking ability, indicating more stable properties of SLIPS. With only 0.58 wt. % CNTs incorporation in SLIPS, it could lock 12 % more oil than unincorporated one under increasing high shear rates up to 5000 rpm/min. The Electrochemical Impedance Spectroscopy (EIS) results indicated that the |Z|0.01Hz of optimum SLIPS remained 1.41 × 109 after 10 days immersion in 3.5 wt. % NaCl solution, nearly 2 orders of magnitude higher than that of untreated SLIPS. The optimum SLIPS could maintain slippery properties even when subjected to some harsh manipulating environments including 12 h immersion in strong acid/alkali immersion, high temperature and abrasion.

中文翻译：

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具有增强稳定性和耐腐蚀性的新型光滑表面

摘要 在此，通过简单的喷涂方法，同时引入硅溶胶和碳纳米管 (CNT) 并随后注入油，制备了光滑的液体注入多孔表面 (SLIPS)。在熔融 PVDF 过程中，溶剂蒸发和硅溶胶收缩过程中形成了大量的微孔和纳米孔，两者都起到了储油的作用。然后详细研究了碳纳米管对持油能力和缓蚀机理的影响。SiO2 纳米粒子与碳纳米管之间的相互作用赋予了原始层次结构更丰富的形态和微孔数量增加。这两个因素协同增强了锁油能力，表明SLIPS的性能更加稳定。仅 0.58 重量。% CNTs 掺入 SLIPS，在将高剪切速率提高到 5000 rpm/min 的情况下，它可以比未掺入的油多锁定 12% 的油。电化学阻抗谱 (EIS) 结果表明，最佳 SLIPS 的 |Z|0.01Hz 在浸入 3.5 wt. 10 天后保持 1.41 × 109。% NaCl 溶液，比未处理的 SLIPS 高近 2 个数量级。即使在一些恶劣的操作环境中，包括在强酸/强碱浸泡、高温和磨损中浸泡 12 小时，最佳的 SLIPS 也能保持光滑的性能。