Xu Changyue, Chen Zhuo, Wang Chaoxia, Chen Kunlin
Key Laboratory of Eco-Textiles, Ministry of Education, School of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China.
ACS Appl Mater Interfaces. 2021 Dec 15;13(49):59298-59309. doi: 10.1021/acsami.1c19304. Epub 2021 Dec 6.
By designing and preparing multifunctional materials exhibiting self-healing ability, problems related to their durability outdoors can be solved. This study, inspired by the self-healing mechanism of natural creatures, successfully prepared a dual self-healing multifunctional coating using temperature stimuli-responsive multicompartment microcapsules. Phase change materials (PCMs) were employed to load multicompartment microcapsules that were produced through Pickering emulsion polymerization by applying hydrophobic materials encapsulated by titanium dioxide (TiO) nanocapsules as Pickering emulsifiers. The multifunctional coating produced using microcapsules and self-healing waterborne polyurethane (WPU) exhibited thermal insulation and antireflection properties, which was attributed to the application of PCMs and TiO, and it also achieved remarkable superhydrophobicity. Moreover, this coating exhibited the intrinsic and superficial dual self-healing ability, which was attributed to the release of hydrophobic materials from microcapsules and the self-healing ability of WPU. This study can be referenced to guide the fabrication of high-performance self-healing materials, and it can contribute to the long-term use of multifunctional coatings.
通过设计和制备具有自修复能力的多功能材料，可以解决与其在户外耐久性相关的问题。本研究受天然生物自修复机制的启发，成功制备了一种使用温度刺激响应多室微胶囊的双重自修复多功能涂层。采用相变材料（PCM）负载多室微胶囊，这些微胶囊是通过皮克林乳液聚合制备的，使用二氧化钛（TiO）纳米胶囊包裹的疏水材料作为皮克林乳化剂。使用微胶囊和自修复水性聚氨酯（WPU）制备的多功能涂层具有隔热和抗反射性能，这归因于PCM和TiO的应用，并且还实现了显著的超疏水性。此外，该涂层表现出内在和表面双重自修复能力，这归因于微胶囊中疏水材料的释放以及WPU的自修复能力。本研究可为指导高性能自修复材料的制备提供参考，并有助于多功能涂层的长期使用。
