石墨烯水性复合防腐涂料的研究进展

石墨烯复合防腐涂料因兼顾石墨烯优异的化学稳定性、快速的导电性、突出的力学性能和聚合物树脂的强附着力、良好成膜性等优点,受到越来越多涂料防护工作者的关注。然而,目前石墨烯复合防腐涂料的研究主要以溶剂型复合材料为主,环保性差。加快石墨烯在水性防腐涂料中的应用研究,开发低成本、高性能、绿色环保的新型石墨烯水性复合防腐涂料,成为未来石墨烯防腐蚀涂层材料的研究热点。对石墨烯在水性聚氨酯防腐涂料、水性环氧树脂防腐涂料、水性丙烯酸防腐涂料以及水性无机富锌涂料中的功能化应用进行介绍,将石墨烯添加到水性防腐涂料中可以增强涂层对基材的附着力,提升涂料的物理屏蔽性、耐磨性和防腐性,同时具有环保安全的特性,大大扩大了水性防腐涂料的应用范围。另外,对石墨烯水性复合防腐涂料功能化应用研究所面临的重点、难点进行了分类介绍,包括石墨烯选材、石墨烯与水性涂料的配套体系研究、石墨烯用量以及石墨烯在水性涂料中的分散性和相容性。

Research on Graphene-based Waterborne Composite Anticorrosive Coat-ings

Graphene composite anticorrosive coating has attracted more and more attention due to excellent chemical stability, rapid electrical conductivity, outstanding mechanical properties of graphene, as well as strong adhesion and film forming property of polymer resin. However, current studies on graphene composite anticorrosive coating mainly focused on solvent-based composite coatings, which was not environmental friendly. Speeding up study on graphene application to waterborne anticorrosive coatings and developing novel graphene waterborne composite anticorrosive coatings featuring in low cost, high performance and environmental friendliness become the research hotspot in the future. Functional application of graphene to waterborne polyurethane anticorrosive coatings, waterborne epoxy resin anticorrosive coatings, waterborne acrylic coatings and waterborne inorganic zinc-rich coatings were introduced. Addition of graphene to waterborne anticorrosive coatings could enhance the adhesion to the substrate, physical shielding property, wear resistance and corrosion resistance of the coatings, and exhibit environmental friendliness and safety features, thus greatly expanding application scope of waterborne anticorrosive coatings. In addition, key points and difficulties in the functional application of graphene waterborne composite anticorrosive coating were also introduced in classification, including selection of graphene, supporting system study of graphene and waterborne coatings, graphene amount as well as dispersibility and compatibility of graphene in waterborne coatings.