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Polymer/Inorganic nanocomposite coatings with superior corrosion protection performance: A review
Sepideh Pourhashem,Farhad Saba,Jizhou Duan,Alimorad Rashidi,Fang Guan,Elham Garmroudi Nezhad,Baorong Hou 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.88 No.-
Nanocomposite coatings based on adding inorganic nanofillers in polymer matrix are a new class ofcorrosion protection methods which show superior corrosion resistance and mechanical performancecompared to conventional composite coatings. Inorganic nanomaterials such as metal nanopowders,metal oxides, nano-glassflakes, nitrides and carbides, and nano-calcium carbonates have significantpotential for enhancing the barrier performance of polymer coatings. Herein, the effects of the above-mentioned nanomaterials on the corrosion protection performance of polymer coatings are discussedand a comprehensive review about recent studies on the corrosion resistance of these nanocompositecoatings is provided. This review clearly indicates that the characteristics of nanocomposite coatingsstrongly depend on the type of nanoparticles, morphology, size, specific surface area, the fraction ofnanofillers, the chemical structure, the functional groups, and the interaction between nanoparticles andpolymer matrix. The highest corrosion resistance can be achieved via well-dispersion of nanomaterials inthe polymer matrix and there are various approaches based on the fabrication methods and physical/chemical/mechanical surface treatments to reach this goal. In addition, it is meaningful to developnanocomposite coatings through green approaches without altering the intrinsic properties ofnanofillers and without using toxic chemicals for modification of nanofillers.