Study and investigation of corrosion resistance, adhesion and hardness of epoxy/organoclay based nanocomposite coatings containing iron oxide and zinc oxide nanoparticles
1
Nanotechnology Research Institute, Urmia University, Urmia, Iran
2
Faculty of Chemistry, Urmia University, Urmia
Abstract
In this work, new nanocomposite coatings based on epoxy with different percentages (wt.%) of organic clay containing iron oxide and zinc oxide nanoparticles as additives have been prepared. In this context, iron oxide (Fe3O4) and zinc oxide were primarily prepared by a chemical coprecipitation method. Next, intercalated montmorillonite K10 (Mont K10) was synthesized by stabilization of surface active ingredients such as cetyltrimethylammonium bromide (CTAB) and diethylenetriamine penta methylene phosphonic acid (DTPMP). The prepared Fe3O4 or ZnO were then located within the interlayers and on the external surface of the organoclay to fabricate the novel additives. These additives were dispersed in the epoxy resin and used as nanocomposite coating on the substrate. The structure and morphology of coatings were characterized using XRD, FT-IR and SEM. The effect of adding nanoparticles on the corrosion resistance behavior and mechanical properties of the coatings were investigated by Electrochemical Impedance Spectroscopy (EIS), Salt Spray, pull off and Hardness test. The results of EIS and Salt Spray tests showed that the corrosion resistance of the coating significantly improved by incorporation of CTAB-modified clay in the epoxy matrix. Furthermore, according to the results of pull off and Shore D tests, the mechanical properties such as interfacial adhesion and hardness of coating containing CTAB-clay showed the best performance. In addition, SEM images showed that embedded nanostructures in epoxy coating resulted in a denser, more uniform and less porous layer in comparison with pure epoxy which can effectively prevent the corrosion of the underlying metal by creating high blocking properties.
Mahmoudian, M., & Rahmani, S. (2023). Study and investigation of corrosion resistance, adhesion and hardness of epoxy/organoclay based nanocomposite coatings containing iron oxide and zinc oxide nanoparticles. Nashrieh Shimi va Mohandesi Shimi Iran, (), -.
MLA
Mehdi Mahmoudian; Soleiman Rahmani. "Study and investigation of corrosion resistance, adhesion and hardness of epoxy/organoclay based nanocomposite coatings containing iron oxide and zinc oxide nanoparticles". Nashrieh Shimi va Mohandesi Shimi Iran, , , 2023, -.
HARVARD
Mahmoudian, M., Rahmani, S. (2023). 'Study and investigation of corrosion resistance, adhesion and hardness of epoxy/organoclay based nanocomposite coatings containing iron oxide and zinc oxide nanoparticles', Nashrieh Shimi va Mohandesi Shimi Iran, (), pp. -.
VANCOUVER
Mahmoudian, M., Rahmani, S. Study and investigation of corrosion resistance, adhesion and hardness of epoxy/organoclay based nanocomposite coatings containing iron oxide and zinc oxide nanoparticles. Nashrieh Shimi va Mohandesi Shimi Iran, 2023; (): -.
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