基于有机防腐涂层自防护能力的天然纳米管缓蚀剂装载器智能缓释行为调控及相关机制研究

发展智能有机防腐涂层是实现我国超级工程、超大型基础设施装备材料超高使役性能和超长使役寿命的有效途径。本项目以提升有机防腐涂层自防护能力和使役寿命为目的，开展经聚电解质包覆的具有环境变化响应能力的天然埃洛石纳米管微容器在有机防腐涂层中对缓蚀剂的缓释行为调控及相关机理研究，重点探究微容器对涂层中水的入侵以及氯离子浓度和pH值变化的响应行为，分析上述响应行为对涂层自防护能力的影响规律和微观作用机制，掌握微容器环境变化响应能力与涂层自防护能力匹配性调控技术；研究微容器的缓蚀剂装载量、对缓蚀剂的释放速度以及微容器在有机涂层中的添加量和分布状态对涂层自防护能力和使役寿命的影响规律和作用机制，确定上述各参数的适宜范围，为建立环境敏感型智能有机防腐涂层设计准则提供理论依据，为环境友好的高效长寿命智能有机防腐涂层的研制和推广应用提供可靠的实验室证据。

With the implementation of the china's Mega project and the super infrastructure engineering in China, more than 100-year service life has become an essential performance index for many engineering materials and equipment. To develop intelligent and environment friendly organic anticorrosion coatings is a good solution to meet the requirements. In this project, the discussion will be dressed on the release behavior, control technique and related mechanism of inhibitors in the halloysite nanotubes encapsulated by polyelectrolyte with environmental change response ability on aspect of enhancing the self-protection ability and service life of organic anticorrosive coatings. More focus will put on the response behavior of micro vessel on the invasion of water, the change of Cl- concentration and pH value in the organic anticorrosive coatings. The applicant will also study the interaction behaviors between the environmental change response behavior of the micro vessel and self-protection performance of anti-corrosion coating and analyze the related mechanism. An appropriate control technique will be obtained in the end. The applicant will also study the influence of key parameters, such as load and release rate of inhibitor, additive amount and distribution of micro vessel in organic anticorrosion coatings, on self-protection properties and other service performance, and explore the comprehensive interaction mechanism as well. The suitable range of key parameters will be determined. Finally, laboratory evidence and theoretical guidance for design, development and application of the efficient and long life intelligent environment friendly organic coatings will be present.