Self-unfolded graphene for corrosion protection
Self-unfolded graphene for corrosion protection
复制标题
用于腐蚀防护的自展开石墨烯
DOI：
10.1016/j.matlet.2020.128963
复制
发表时间：
2021
影响因子：
3
通讯作者：
Liu Guichang
中科院分区：
文献类型：
--
作者：
Sun Wen;Wang Lida;Yang Zhengqing;Wang Jing;Liu Guichang
石墨烯在涂层中不可避免的皱缩和折叠限制了石墨烯涂层防腐性能的提高。本文制备了具有自展开形态和皱缩形态的还原氧化石墨烯(S-RGO)。与C-RGO相比，S-RGO具有更大的有效长径比和垂直于侵蚀性物种扩散路径方向的投影面积，使其不渗透区可以迫使侵蚀性物种沿更长的扩散路径迁移，从而使涂层具有更高的防腐性能。
Inevitable crumpling and folding of graphene in coating matrix restricts the enhancement of corrosion protection properties of graphene-based coatings. Herein, reduced graphene oxide with self-unfolded morphology (S-rGO) and crumpled morphology (C-rGO) were prepared. Compared with C-rGO, S-rGO exhibits a higher performance in enhancing the corrosion protection properties of epoxy coating because S-rGO possesses larger effective aspect ratio and projected area in the direction perpendicular to the diffusion path of aggressive species so that its impermeable domains can force aggressive species to overcome the coating matrix via migrating along longer diffusion paths.