Wu Junhao, Yu Jiamin, Jiao Chengcheng, Chen Huanyi, Ruan Xinxin, Ge Shanqin, Cai Qingzhao, Li Wei, Chen Long, Gong Genxiang, Zhou XiangYang, Yu Jinhong, Nishimura Kazuhito, Jiang Nan, Cai Tao
Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences, Ningbo 315201, China.
Department of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
ACS Appl Mater Interfaces. 2024 Aug 7;16(31):41435-41449. doi: 10.1021/acsami.4c05371. Epub 2024 Jul 29.
Smart responsive materials are capable of responding to external stimuli and, compared to traditional materials, can be effectively reused and reduce usage costs in applications. However, smart responsive materials often face challenges such as the inability to repair extensive damage, instability in long-term performance, and inapplicability in extreme environments. This study combines 2D diamond nanosheets with organic fluorinated molecules to prepare a smart nanofluid (fluorinated diamond nanosheets, F-DN) with self-healing and self-adhesion properties. This smart nanofluid can be used to design various coatings for different applications. For example, coatings prepared on textured steel plates using the drop-casting method have excellent superhydrophobic and high oleophobic properties; coatings on titanium alloy plates achieve low friction and wear in the presence of lubricating additives of F-DN in perfluoropolyether (PFPE). Most impressively, coatings on steel plates not only provide effective corrosion resistance but also have the ability to self-heal significant damage (approximately 2 mm in width), withstand extremely low temperatures (-64 °C), and resist long-term corrosion factors (immersion in 3.5 wt % NaCl solution for 35 days). Additionally, it can act as a "coating glue" to repair extensive damage to other corrosion-resistant organic coatings and recover their original protective properties. Therefore, the smart nanofluid developed in this study offers diverse applications and presents new materials system for the future development of smart responsive materials.
智能响应材料能够对外部刺激做出响应，与传统材料相比，在应用中可以有效重复使用并降低使用成本。然而，智能响应材料常常面临诸如无法修复大面积损伤、长期性能不稳定以及在极端环境中不适用等挑战。本研究将二维金刚石纳米片与有机氟化分子相结合，制备出一种具有自修复和自粘性能的智能纳米流体（氟化金刚石纳米片，F-DN）。这种智能纳米流体可用于设计适用于不同应用的各种涂层。例如，采用滴铸法在纹理钢板上制备的涂层具有优异的超疏水和高疏油性能；在钛合金板上的涂层在全氟聚醚（PFPE）中添加F-DN润滑添加剂的情况下实现了低摩擦和低磨损。最令人印象深刻的是，钢板上的涂层不仅提供有效的耐腐蚀性，还具有自我修复重大损伤（宽度约2毫米）的能力，能承受极低温度（-64°C），并抵抗长期腐蚀因素（浸泡在3.5 wt% NaCl溶液中35天）。此外，它可以充当“涂层胶水”来修复其他耐腐蚀有机涂层的大面积损伤并恢复其原始防护性能。因此，本研究开发的智能纳米流体具有多种应用，并为智能响应材料的未来发展提供了新的材料体系。
