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Large scale eco-friendly synthesis of nanoparticulate fillers for corrosion resistant vinyl coatings
Published in
Volume: 1
Pages: 646 - 649
The synthesis of nano particulate CaCO3, Fe2O 3 and BaSO4 was carried out by green route using the Polymer Mediated Growth (PMG) technique. Large quantities of these nano particles up to few kilograms can be synthesized easily using the PMG method. This is also eco-friendly and green route since it is low temperature aqueous method, does not use toxic chemicals or consume high energy/ electrical power. The particles were characterized by XRD, SEM and TEM to confirm their structure and particle size at nano-levels. These were incorporated at 3-5 wt % in vinyl coatings using polyvinyl acetate or polyvinyl butyral which were coated on mild steel substrates. The corrosion protection was studied using electrochemical impedance spectroscopy (EIS) and monitoring the impedance, open circuit potential, phase etc. over prolonged periods of 150 to 450 hrs at 45 C in saline conditions (3.5% NaCl solution) The nano-particle additives are seen to be 7 to 10 times superior to the commercial grades in corrosion protection. The corrosion protection efficiency of these nano-particle additives is seen to follow the order nano-CaCO3 < nano-Fe2O3> nano-BaSO4 in vinyl coatings.
About the journal
JournalTechnical Proceedings of the 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013
Open AccessNo