石墨烯增强的自修复性有机复合涂层的耐腐蚀机理

项目名称： 石墨烯增强的自修复性有机复合涂层的耐腐蚀机理

项目编号： No.U1560108

项目类型： 联合基金项目

立项/批准年度： 2016

项目学科： 矿业工程

项目作者： 李静

作者单位： 上海理工大学

项目金额： 58万元

中文摘要： 在钢铁材料表面制备石墨烯增强的自修复性高分子基复合涂层。其中，石墨烯同时起到负载自修复剂以及增强涂层的阻隔性能和力学性能的作用。自修复剂在石墨烯表面的负载辅助实现自修复剂的分散、储存和缓释。通过优化自修复剂的选择、自修复剂在石墨烯表面的负载方法、石墨烯在涂层中的分散状态等制备复合涂层。在此基础上，研究湿热条件下氯离子在复合涂层中的渗透现象以及涂层发生破坏时的自修复性能。并根据涂层的不同腐蚀阶段（腐蚀介质扩散阶段、膜下腐蚀起始阶段、涂层破坏阶段），系统研究石墨烯的物理阻隔作用和自修复剂的化学修复作用对复合涂层耐蚀性的协同增强机理。提出钢铁材料表面石墨烯增强的自修复性复合涂层在高氯离子、高湿热条件下的防护机理以及起主导作用的因素。

中文关键词： 涂层；纳米复合材料；耐蚀性；石墨烯；自修复

英文摘要： Graphene reinforced self-healing polymer composite coatings will be fabricated on steel surfaces. Graphene will function as the carrier of the self-healing agents, as well as the reinforcement of the composite coatings for barrier properties and mechanical properties. With the assistance of graphene, the self-healing agents will be dispersed and stored in the composite coatings and released on demand. The fabrication of the composite coatings will be focused on the selection of the healing-agents, the storage of the healing-agent on graphene surfaces and the dispersion of graphene. The permeability of chloride ions in the composite coatings will be studied under high humidity, high atmospheric temperature condition. The self-healing properties of the composite coatings will also be characterized. A systematic analysis of the composite coatings will be emphasized on the synergetic effects of the physical barrier properties and the chemical self-healing abilities, according to the different corrosion stages (diffusion, under-painting corrosion initiation, coating damage). The anticorrosion mechanism and the critical factors will be proposed for the graphene reinforced self-healing polymer composite coatings on steel surfaces under the condition of high humidity, high atmospheric temperature and high concentration of chloride ion.

英文关键词： Coating;Nanocomposite;Anticorrosion;Graphene;Self-healing