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- Title
Fabrication of active corrosion protection waterborne polyurethane coatings using cerium modified palygorskite nanocontainers.
- Authors
Ni, Lingli; Li, Shanshan; Liu, Yongtao; Jiang, Xiaowu; Cai, Peng; Feng, Liangdong; Zhang, Shizhong; Gao, Xiaoyan
- Abstract
The development of eco‐efficient and environmental friendly active anti‐corrosion coatings for metallic substrates represents a fundamental milestone in many engineering applications. Herein, a new type of active corrosion protection coating was successfully synthesized simply based on waterborne polyurethane (WPU) and nanocontainer of Ce3+ modified palygorskite (Ce‐PAL). Particularly, the nanocontainer of Ce‐PAL was achieved via a facile and green process by cation exchange in water. Inductively coupled plasma atomic emission spectrometry (ICP) revealed that Ce3+ had successfully incorporated into PAL nanofibers with a loading amount of 10.334 g/kg. The salt immersion test, electrochemical potentiodynamic measurements and electrochemical impedance spectroscopy (EIS) demonstrated that the incorporation of Ce‐PAL only with 2 wt% into WPU led to a significant improvement of their corrosion protection properties. Finally, according to the results of scanning electron microscopy with energy dispersive X‐ray spectroscopy, the active anti‐corrosion mechanism of Ce‐PAL/WPU coating was proposed.
- Subjects
INDUCTIVELY coupled plasma atomic emission spectrometry; PALYGORSKITE; POLYURETHANES; ENERGY dispersive X-ray spectroscopy; EPOXY coatings; METAL coating
- Publication
Journal of Applied Polymer Science, 2021, Vol 138, Issue 36, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.50899