Corrosion protection properties of Janus PTFE coatings in highly corrosive H2SO4 solutions

被引：19
作者：
Xu, Kaixin [1 ]
Sun, Wen [1 ]
Wang, Lida [1 ]
Yang, Zhengqing [1 ]
Li, Bohang [1 ]
Ma, Yunsheng [2 ]
Zhao, Liqiu [2 ]
Zhang, Chenghe [2 ]
Ma, Shiheng [2 ]
Han, Haoxue [2 ]
Liu, Guichang [1 ,3 ]
机构：
[1] Dalian Univ Technol, Dept Chem Engn, 2 Linggong Rd, Dalian 116024, Peoples R China
[2] Shandong Chambrd Petrochem Co Ltd, Binzhou 256500, Shandong, Peoples R China
[3] Dalian Univ Technol, Xinjiang Res Acad Co Ltd, Urumqi 830000, Xinjiang, Peoples R China
来源：
CORROSION SCIENCE | 2022年 / 207卷
基金：
中国国家自然科学基金;
关键词：
Acid corrosion; Polytetrafluoroethylene; Janus modification; Adhesion force; Corrosion protection; CROSS-LINKING; POLY(TETRAFLUOROETHYLENE); MEMBRANES; FLUOROPOLYMERS; PERFORMANCE; FABRICATION; EIS;
D O I：
10.1016/j.corsci.2022.110553
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To improve the corrosion protection properties of polytetrafluoroethylene (PTFE) in highly corrosive H2SO4 solutions, Janus PTFE coatings (PDA/PEI@PTFE) were constructed. The modified side is achieved by codeposition of polydopamine (PDA) and polyethyleneimine (PEI) on the sodium naphthalene etched side of PTFE. It not only has a 5-fold increase in interfacial adhesion with substrates via chemical bonds, but also exhibits improved barrier properties due to the coverage of dense PDA/PEI film, with corresponding corrosion resistance increase by similar to 2-3 orders of magnitude. Meanwhile, the untreated side is hydrophobic pristine PTFE and has good self-cleaning properties and excellent resistance in concentrated H2SO4 solutions.
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页数：11
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