A promising nanocomposite from CNTs and nano-ceria: nanostructured fillers in polyurethane coatings for surface protection
By Madhan K
Published in RSC Adv.
The Royal Society of Chemistry
2015
Abstract
The balanced combination of nanostructured carbon materials and metal oxide nanoparticles has been considered as an efficient reinforcement material in developing next-generation multifunctional coatings. Herein, we demonstrate a general approach to fabricate a CNT based nanocomposite with the inclusion of Ceo? nanoparticles that can be effectively implemented as a reinforcement material in surface protective coatings. The synthesized CNT/Ceo? nanocomposite was characterized by spectral and surface morphological analyses, which indicated that the Ceo? nanoparticles were successfully deposited onto the surface of the CNTs. The XRD pattern shows the semi-crystalline nature of the CNTs and the face centered cubic structure of the Ceo? nanoparticles. The prepared nanocomposite has subsequently been used as a nanofiller in polyurethane (PU) coatings for surface protection of steel substrates and a remarkable synergistic effect of nano-ceria and CNTs has been observed. The corrosion resistance of steel coated with a PU coating containing CNT/Ceo? was pointedly higher than with a pure PU coating and a PU coating with CNTs alone. This result suggests a new prospect for solving the corrosion issues encountered on steel structures in industrial applications by using multifunctional hybrid coatings with nanostructured reinforcements.
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