Abstract:

Nano-fillers have the advantages of small size and high specific surface area. The introduction of nano-fillers into scale inhibition coatings can further improve the scale inhibition effect of scale inhibition coatings. Therefore, the research and application of composite scale inhibition coatings containing nano-fillers have received extensive attention. In this paper, the scale inhibition mechanism of nano-fillers after adding composite coatings was studied, and the mechanism of nano-fillers in scale inhibition coatings was summarized and analyzed: ① Low surface energy could reduce the nucleation rate, growth rate and adhesion of fouling substances on the coating surface; ② The surface micro-nano structure induced the scale layer to form an unstable crystal structure or inhibited crystal nucleation. In addition, the properties of nano-silica, carbon nanomaterials (carbon nanotubes, carbon nanofibers, graphene and its derivatives, etc.), nano-metal oxides (TiO₂, CeO₂, ZnO) and other commonly used nano-fillers and the advantages and disadvantages after the introduction of coatings were introduced. The preparation process and methods of nano-fillers and scale inhibition coatings were summarized, and the research direction of nano-fillers in scale inhibition coatings was prospected in order to provide some reference for the application of nano-fillers in the field of anti-scaling composite coatings.

Key words: nano-fillers, coating, scale inhibition

摘要：

纳米填料具有尺寸小、比表面积高等优点，将纳米填料引入阻垢涂层可进一步提高阻垢涂层的阻垢效果，因此含纳米填料的复合阻垢涂层受到了广泛的关注。本文从纳米填料加入复合涂层后的阻垢机理入手，总结分析纳米填料在阻垢涂层中的作用机理主要有：①低表面能降低成垢物质的成核速率、生长速度及成垢物质在涂层表面的附着力；②表面微纳结构诱发垢层形成不稳定的晶体结构或抑制晶体形核。此外，介绍了纳米二氧化硅、碳纳米材料（碳纳米管、碳纳米纤维、石墨烯及其衍生物等）、纳米金属氧化物（TiO₂、CeO₂、ZnO）等常用纳米填料的性质及引入涂层后存在的优缺点，总结了纳米填料及阻垢涂层的制备过程及方法，并对纳米填料在阻垢涂层方面的研究方向进行了展望，以期为纳米填料在防垢复合涂层领域的应用提供一定的参考。

关键词: 纳米填料, 涂层, 阻垢