层状双金属氢氧化物防腐蚀涂层材料的研究进展

Research Progress on Anti-corrosion Coatings of Layered Double Hydroxides

层状双金属氢氧化物(LDHs)作为一种重要的无机纳米容器型材料,具有离子交换性、结构可调控、热稳定性良好等优势,近年来已发展成为防腐蚀涂层领域的研究热点。本文系统总结了近年来该领域的相关研究成果,阐述了LDHs材料的防腐蚀机理和影响LDHs防腐蚀性能的因素,总结了几类主流LDHs防腐蚀涂层的研究进展,分析了其在应用过程中存在的问题并提出具有可行性的解决途径。同时,重点对LDHs防腐蚀涂层在多功能化和复合化方面的相关进展进行了总结和展望。

Layered double hydroxide(LDHs) is a type of layered compound composed of positively charged metal hydroxides and negatively charged anions. LDHs has the unique advantages of ion exchange, adjustable structure, good thermal stability and low manufacturing cost, therefore, it is an important class of inorganic nanocontainer material, and has a wide range of applications in the fields of flame retardancy, catalysis, water treatment, drug sustained release, etc. In recent years, LDHs has been proven to be able to load corrosion inhibitors and release them into the environment through ion exchange,which has become a major research hotspot in the field of anti-corrosion coatings. In this article, the anticorrosion mechanism, influencing factors of LDHs materials, the research progress of various types of LDHs anti-corrosion coatings were summarized. At the same time, problems and solutions related with the application process were also analyzed. On the other hand, the relevant progress of LDHs anti-corrosion coatings in terms of multi-functionalization and compounding was summarized and prospected.