文献类型：期刊文献

英文题名：Excellent corrosion resistance of FGO/Zn2SiO4 composite material in epoxy coatings

作者：Chai, Zhuang-Lei[1];Chen, Yi-Xiang[1,2];Zhou, Dan[1,2];Zhang, Min[1];Liu, Jin-Ku[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Sichuan Univ Sci & Engn, Key Lab Sichuan Prov, Mat Corros & Protect, Chengdu 643000, Sichuan, Peoples R China

年份：2022

卷号：170

外文期刊名：PROGRESS IN ORGANIC COATINGS

收录：;EI(收录号：20222612293402);WOS:【SCI-EXPANDED(收录号:WOS:000861497400005)】；

基金：Acknowledgements This work was supported by the National Natural Science Foundation of China (Grant 21878090) and the Opening Project of Material Corro- sion and Protection Key Laboratory of Sichuan Province (Grant 2020CL04) .

语种：英文

外文关键词：P-phenylenediamine; Graphene oxide; Zn2SiO4 ???????; Epoxy coating; Anti-corrosion

摘要：Generally, the anti-corrosion performance of the coating is improved by adding organic or inorganic anti-corrosion materials to the epoxy coating. In this paper, P-phenylenediamine-functionalized graphene oxide/ zinc silicate (FGO/Zn2SiO4) composites were synthesized in situ by hydrothermal method as filler in epoxy resin. P-phenylenediamine (PPDA) acts as a spatial barrier between graphene oxide (GO) layers and improves FGO/Zn(2)SiO(4 )dispersion in the epoxy coating. The corrosion resistance of FGO/Zn(2)SiO(4 )material is 234.4 % of GO/ Zn(2)SiO(4 )material and 763.6 % of Zn(2)SiO(4 )material. Because GO/Zn(2)SiO(4 )composite has numerous oxygen -containing groups that tend to agglomerate, which results in reduced dispersion in epoxy coatings. However, FGO not only prolongs the diffusion path of corrosion ions in the coating and reduces the rate of charge transfer for electrochemical reflection, but the amino group on the PPDA provides additional cross-linking on top of the epoxy cure to improve dispersion. Utilizing the synergistic anti-corrosion effect of inorganic and organic ma-terials, a new type of Zn(2)SiO(4 )anti-corrosion filler was designed, which significantly improved the anti-corrosion performance of Zn(2)SiO(4 )in epoxy resin coating.