Polyaniline encapsulated α-zirconium phosphate nanosheet for enforcing anticorrosion performance of epoxy coating

被引：14
|
作者：
Situ, Yue [1 ,2 ]
Guo, Yanlin [1 ]
Ji, Weiwei [1 ]
Liu, Defei [3 ]
Wei, Dan [2 ,4 ]
Huang, Hong [1 ,2 ]
机构：
[1] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China
[2] Guangdong Prov Key Lab Green Chem Prod Technol, Guangzhou 510640, Peoples R China
[3] Foshan Univ, Sch Environm & Chem Engn, Foshan, Peoples R China
[4] Guangdong Pharmaceut Univ, Sch Chem & Chem Engn, Zhongshan 528458, Guangdong, Peoples R China
来源：
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH | 2021年 / 18卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Polyaniline; α -zirconium phosphate; Water absorption; Anticorrosion performance; Corrosion products;
D O I：
10.1007/s11998-020-00452-y
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Polyaniline (PANI) encapsulated alpha-zirconium phosphate (alpha-ZrP) nanocomposites (PANI/alpha-ZrP) were prepared by in situ oxidative polymerization and used as anticorrosive filler in epoxy coatings. Water absorption test and electrochemical measurements in 3.5 wt.% NaCl solution were conducted to assess the barrier properties and anticorrosion performances of different coating systems. PANI/alpha-ZrP composite epoxy coating showed remarkably enhanced corrosion resistance comparing to neat epoxy coating because of "maze effect" from alpha-ZrP and "passivation effect" from PANI. The alpha-ZrP nanosheets could be completely encapsulated by PANI with appropriate PANI/alpha-ZrP mass ratio, and the resulting nanocomposite exhibited optimal corrosion protection properties.
引用
收藏
页码：999 / 1012
页数：14
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