Layered double hydroxides (LDHs) are an emerging technology that is used as a filler in coatings due to its structural and compositional flexibility. LDHs are layered compounds composed of positive metal hydroxides and negatively charged interlayer anions. We have discussed the structures and characteristics of LDHs in this review study, as well as many processes, such as the barrier mechanism, self-healing corrosion inhibitor method, and superhydrophobic mechanism, that demonstrate how LDHs operate in anticorrosion coatings. Additionally, how the use of LDH imparts flame-retardant qualities to the coatings is covered here, along with their respective processes. LDH coatings are suitable for packaging, biomedical, water treatment, and conductive applications alone or in combination with other materials.

层状双氢氧化物 (LDH) 是一种新兴技术，由于其结构和成分的灵活性，可用作涂料中的填料。LDHs 是由正金属氢氧化物和带负电荷的层间阴离子组成的层状化合物。我们在本综述研究中讨论了 LDHs 的结构和特性，以及许多过程，例如屏障机制、自愈缓蚀剂方法和超疏水机制，证明了 LDHs 在防腐涂层中的作用。此外，本文还介绍了 LDH 的使用如何赋予涂料阻燃性能，以及它们各自的工艺。LDH 涂层适用于单独或与其他材料结合使用的包装、生物医学、水处理和导电应用。