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纳米填料在环氧防腐涂层中的应用研究进展
Research Progress of Nanofillers for Epoxy Anti-corrosion Coatings
【摘要】 有机涂层因操作便捷、成本低廉在金属防腐领域备受青睐,其中环氧树脂因其显著的化学惰性、对基材的优异附着力和优良的力学性能而被广泛应用。然而环氧涂层在固化过程中因收缩或溶剂蒸发而产生空隙和导电通道,降低了其防腐效率。解决这一问题的策略是向环氧涂层中加入纳米颜填料。本文针对当下应用于环氧防腐涂层的纳米颜填料进行了总结,详细阐述了非金属纳米填料(包括无机非金属纳米填料和有机纳米填料)和金属纳米材料,特别是新型纳米填料(MOFs材料和MXene材料)的性能及改性现状,并对其应用前景进行了展望。
【Abstract】 Organic coatings play a significant role in corrosion protection of metallic materials due to their convenient operation and low cost. Among them, epoxy resin is the most widely used as coating substrate due to its excellent adhesion to materials to be coated, remarkable chemical inertness and mechanical properties. However, voids and conductive channels would form due to shrinkage or solvent evaporation during its curing process. To cope with it, nanoparticles, which can be effectively filled in the tiny pores of epoxy resins are added, thereby improving the barrier and anti-corrosion properties of the coating. However, nanoparticles are prone to agglomeration owing to their high specific surface area, and therefore have poor dispersibility in organic resins. Therefore, surface-modification is required to improve their compatibility with resins and therefore to achieve specific performance. In this paper, nano-fillers currently used for epoxy anti-corrosion coatings are summarized and classified into three categories, namely non-metallic nano-fillers(including inorganic non-metallic nano-fillers and organic nano-fillers), metallic nano-fillers and new nano-fillers(MOFs and MXene materials), also, the properties and modification strategies of nano-fillers are introduced in detail. Finally, the challenges and outlook of nano-fillers are discussed.
- 【文献出处】 中国腐蚀与防护学报 ,Journal of Chinese Society for Corrosion and Protection , 编辑部邮箱 ,2023年02期
- 【分类号】TG174.4
- 【下载频次】178