Epoxy coating with in-situ synthesis of polypyrrole functionalized graphene oxide for enhanced anticorrosive performance

被引：85
作者：
Zhu, Qingsong [1 ,2 ]
Li, En [1 ]
Liu, Xianhu [1 ]
Song, Weiqiang [2 ]
Li, Yilong [2 ]
Wang, Xinchao [2 ]
Liu, Chuntai [1 ]
机构：
[1] Zhengzhou Univ, Natl Engn Res Ctr Adv Polymer Proc Technol, Key Lab Adv Mat Proc & Mold, Minist Educ, Zhengzhou 450002, Peoples R China
[2] Henan Univ Technol, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China
来源：
PROGRESS IN ORGANIC COATINGS | 2020年 / 140卷
关键词：
Graphene oxide; Polypyrrole; Waterborne epoxy coating; Corrosion; In situ polymerization; S-TRIAZINE RING; CORROSION PROTECTION; MILD-STEEL; RESISTANCE; OLIGOANILINES; NANOPARTICLE; HYBRID;
D O I：
10.1016/j.porgcoat.2019.105488
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
This work introduced an in-situ polymerization method to synthesize nanoscale additive for waterborne epoxy (WEP) coatings. The polypyrrole functionalized graphene oxide (GO-PPy) was synthesized via in-situ process to grow polypyrrole (PPy) film on graphene oxide (GO) surface. The structures and morphologies of the synthesized nanocomposites were characterized by FI-TR, XRD, Raman and FESEM techniques. Incorporation of two mass ratios of GO-PPy nanocomposite into the WEP coating had an obvious improvement in corrosion protection performance of the coating. Among the nanocomposite coatings, GP(o.)05% coating showed the best impermeable and corrosion protection performance compared to other coatings. Electrochemical impedance measurement (EIS) results showed that GP(o.)05% coating significantly exhibited the impermeable properties and corrosion protection performance. The protective mechanism of GO-PPy nanocomposites was attributed to passivation effect of conductive PPy and impermeable property of graphene oxide sheets. This work might provide a new candidate coating for metal protection through a facile, environmentally friendly method.
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页数：8
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