Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 138, Issue 36, Pages -Publisher
WILEY
DOI: 10.1002/app.50899
Keywords
coatings; clay; composites; polyurethane
Categories
Funding
- Natural Science Foundation of Jiangsu Province [BK20191484]
- Six Talent Peaks Project in Jiangsu Province (CN) [2019KTHY056]
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The research successfully synthesized a new type of active anti-corrosion coating, using waterborne polyurethane and Ce3+ modified palygorskite. The incorporation of Ce-PAL into WPU with just 2wt% led to a significant improvement in corrosion protection properties.
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.
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