Effect of cyanate ester and graphene oxide as modifiers on corrosion protection performance of epoxy composite coating in sulfuric acid solution

被引：31
作者：
Liu, Qian [1 ,2 ]
Wang, Zhenyu [3 ]
Han, En-Hou [2 ,3 ]
Wang, Shuai [2 ]
Chang, Junwei [1 ,2 ]
机构：
[1] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
[3] Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 182卷
关键词：
Organic coatings; Graphene oxide; EIS; SEM; Acid corrosion; COATED STEEL; CARBON-STEEL; EIS; IMPEDANCE; BEHAVIOR; COPPER; IRON; DEGRADATION; IMPROVEMENT; RESISTANCE;
D O I：
10.1016/j.corsci.2021.109266
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cyanate ester (CE) and graphene oxide (GO) were employed to modify epoxy-based coating (EP) by chemical reaction, and related corrosion protection behaviors were investigated in sulfuric acid solution. Epoxy coating modified by cyanate ester (CE/EP) displayed slower electrolyte diffusion. Further, incorporating 1 wt.% GO into CE/EP (1 wt.% GO/CE/EP) significantly enhanced the polymer stability and anti-corrosion properties. Compared with CE/EP without GO, the low frequency impedance increased by 5 orders of magnitude after 71 days of immersion. Meanwhile, the 1 wt.% GO/CE/EP coating was morphologically unaltered, and no obvious corrosion was detected. Results verified that EP modified by CE and 1 wt.% GO exhibited superior anti-corrosion performance.
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页数：15
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