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- Title
Polyaniline encapsulated α-zirconium phosphate nanosheet for enforcing anticorrosion performance of epoxy coating.
- Authors
Situ, Yue; Guo, Yanlin; Ji, Weiwei; Liu, Defei; Wei, Dan; Huang, Hong
- Abstract
Polyaniline (PANI) encapsulated α-zirconium phosphate (α-ZrP) nanocomposites (PANI/α-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/α-ZrP composite epoxy coating showed remarkably enhanced corrosion resistance comparing to neat epoxy coating because of "maze effect" from α-ZrP and "passivation effect" from PANI. The α-ZrP nanosheets could be completely encapsulated by PANI with appropriate PANI/α-ZrP mass ratio, and the resulting nanocomposite exhibited optimal corrosion protection properties.
- Subjects
EPOXY coatings; POLYANILINES; COMPOSITE coating; SURFACE coatings; PHOSPHATES; CORROSION resistance
- Publication
Journal of Coatings Technology & Research, 2021, Vol 18, Issue 4, p999
- ISSN
1945-9645
- Publication type
Article
- DOI
10.1007/s11998-020-00452-y