An Investigation of Corrosion Behavior of Epoxy/Amine Micro/Nanocapsule Based Smart Coatings
سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 215
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شناسه ملی سند علمی:
IMES14_018
تاریخ نمایه سازی: 1 دی 1399
چکیده مقاله:
Micro/nanocapsules containing self-healing agents have been introduced into epoxy coatings to self-heal the defects and improve the anti-corrosion behavior. To provide epoxy based coating with self-healing ability, two-component healing system consisting of urea–formaldehyde micro/nanocapsules containing epoxy and nano-porous hollow glass microspheres containing diethylenetriamine (DETA) were synthesized. When the defect was made, the micro/nanocapsules released the healing materials to fill the defected area. The coatings containing loaded micro/nanocapsules were applied on carbon steels and their self-healing behavior was investigated using scanning electron microscopy (SEM) observation and electrochemical impedance spectroscopy (EIS) technique. In order to obtain the optimum concentration of micro/nanocapsule in the coatings, coatings with 0 %, 5 %, 15% and 20 % micro/ nanocapsules were synthesized and characterized. The results confirmed that the optimum amount of micro/nanocapsules addition to the epoxy coating was found to be 15wt.%.. The results also reveal that the addition of micro/nanocapsules does not damage the barrier properties of the non-scratched epoxy coating during immersion time.
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نویسندگان
Tahere Ebrahimi Sadrabadi
Professor, School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran
Saeed Reza Allahkaram
Professor, School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran
Nasser Towhidi
Researcher at Research Institute of Petroleum Industry, PhD in Materials Engineering, University of Tehran