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

被引：27

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.

引用

页数：11

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