低聚倍半硅氧烷在钢铁防腐环氧涂层中的应用  

Application of Polyhedral Oligomeric Silsesquioxane in Anticorrosive Epoxy Coating for Steel

作　　者：巩荣耀 Gong Rongyao(China Railway 12th Bureau Group Second Engineering Co.,Ltd.,Taiyuan 030032,China)

机构地区：[1]中铁十二局集团第二工程有限公司,太原030032

出　　处：《涂料工业》2024年第4期68-73,共6页Paint & Coatings Industry

摘　　要：重点综述了多面体低聚倍半硅氧烷(POSS)结构特征、引入环氧涂层的方式、对环氧涂层防腐性能的影响。POSS独特的无机核/有机壳结构,对有机基团的可裁剪性、相容性和反应性为设计具有多种功能的POSS/环氧防腐涂层提供了可能。POSS可以通过自身为主体结构或修饰其他主体结构的方式引入到环氧涂层中。POSS的引入能有效提高环氧涂层的防腐性能,其原因可能主要在于POSS纳米笼的物理填充屏蔽作用、增强环氧网络的交联致密化作用、发挥电活性特征促进稳定钝化层的形成与主动修复作用。未来应加强探索POSS引入环氧树脂的新方式,控制POSS结构的分散均匀性,深入揭示POSS与环氧树脂的相互作用机理以及寻求更多阐释POSS提高涂层防腐性能的直观证据。The structural characteristics of polyhedral oligomeric silsesquioxane(POSS),method of incorporating into epoxy coating,and effect on the anti-corrosive performance of epoxy coating were focused in this paper.It was possible to design POSS/epoxy anti-corrosive coating with multiple functions due to the unique inorganic core/organic shell structure of POSS,its tailorability,compatibility,and reactivity with organic groups.POSS could be introduced into epoxy coating through its own main structure or by modifying other main structures.The introduction of POSS could effectively improve the corrosion resistance of epoxy coating,which may be mainly due to the physical filling and shielding effect of POSS nanocages,cross-linking and densification effect of enhancing epoxy networks,and promotion of stable passivation layer formation and active repair by utilizing the electroactive characteristics.In the future,it was necessary to strengthen the exploration of new ways of introducing POSS into epoxy resins,control the dispersion uniformity of POSS structures,deeply reveal the interaction mechanism between POSS and epoxy resins,and seek more intuitive evidence to explain the improvement of coating corrosion resistance by POSS.

关 键 词：多面体低聚倍半硅氧烷 环氧树脂 纳米结构 耐腐蚀性 

分 类 号：TQ635.2[化学工程—精细化工]