Zhang Qingqing, Zhang Songyu, Liu Ren, Luo Jing
The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Lihu Street 1800, Wuxi, 214122, China.
Small. 2025 Aug 18:e07428. doi: 10.1002/smll.202507428.
Despite significant advances in anti-icing/de-icing coating in recent years, key issues such as lubricant leakage and high de-icing energy consumption still substantially restrict their long-term performance in cold environments. To address this, a long-lasting lubricating coating based on silicone oil-loaded polyaniline (PANI) microspheres is developed. Through innovative structural design and regulation, PANI microspheres achieved "three birds with one stone" effect: photothermal conversion, electrothermal conversion, and lubricating properties. Benefiting from the storage capacity and photothermal conversion of PANI microspheres, the coating could achieve the continuous release of the lubricant under near infrared (NIR) light irradiation, thereby promptly replenishing the lubricating layer. Even after multiple washing-NIR cycles, the coating still retained a low sliding angle (< 10°), highlighting its self-replenishing capability and enabling long-term lubrication. Furthermore, the presence of lubricants imparted long-term antifouling performance to the coating. Additionally, the photothermal and electrothermal conversion capabilities of PANI microspheres endowed the coating with highly efficient de-icing performance. Notably, the coating incorporating 20 wt.% PANI microspheres achieved rapid ice melting within just 7 s under the synergistic effect of NIR light and voltage. This work provided coatings with long-term anti-icing and high-efficiency deicing property, making it suitable for practical use in aerospace, transportation, power facilities, etc.
尽管近年来防冰/除冰涂层取得了重大进展，但润滑剂泄漏和除冰能耗高等关键问题仍然严重限制了它们在寒冷环境中的长期性能。为了解决这一问题，开发了一种基于负载硅油的聚苯胺（PANI）微球的长效润滑涂层。通过创新的结构设计和调控，PANI微球实现了“一石三鸟”的效果：光热转换、电热转换和润滑性能。受益于PANI微球的储能能力和光热转换，该涂层在近红外（NIR）光照射下能够实现润滑剂的持续释放，从而迅速补充润滑层。即使经过多次洗涤-NIR循环，该涂层仍保持低滑动角（<10°），突出了其自我补充能力并实现了长期润滑。此外，润滑剂的存在赋予了涂层长期的防污性能。此外，PANI微球的光热和电热转换能力赋予了涂层高效的除冰性能。值得注意的是，含有20 wt.% PANI微球的涂层在NIR光和电压的协同作用下，仅需7 s就能实现快速融冰。这项工作提供了具有长期防冰和高效除冰性能的涂层，使其适用于航空航天、交通运输、电力设施等实际应用。
