|
Title
|
Effects of surface treatment of TiO2 nanoparticles on the adhesion and anticorrosion properties of the epoxy coating on mild steel using electrochemical technique
|
|
Type
|
JournalPaper
|
|
Keywords
|
Surface treatment TiO2 nanoparticles Corrosion Mechanical properties Nanocomposites
|
|
Abstract
|
Macromolecular coupling agents (MCA) containing epoxide and silanol functional groups were synthesized by radical copolymerization of glycidyl methacrylate (GMA) and γ-methacryloxypropyltrimethoxysilane (MPS), (F1–F3). The MCAs were successfully grafted on the surface of TiO2 nanoparticles via direct reaction, (TiO2-Fs). The homogeneous mixture of TiO2-Fs nanoparticles and epoxy resin was coated on the commercial grade mild steel (St-37) and cured using triethylenetetramine (TETA) as curing agent. The beneficial effects of homogeneous mixing and interfacial binding between TiO2-Fs nanoparticles and epoxy matrix on the long term anticorrosion performance on the steel were investigated by electrochemical impedance spectroscopy (EIS) before and after immersion in 3.5 wt% NaCl solution. The effect of interfacial binding was also investigated on the mechanical properties and water diffusion of the TiO2-Fs/epoxy resin nanocomposite samples. The highest tensile strength and modulus with the lowest water adsorption were observed for the coating samples prepared from MCA contained 50/50 mol ratio of GMA/MPS.
|
|
Researchers
|
Hassan Karimimaleh (Fourth Researcher), Sajjad Bordbar (Third Researcher), Mousa Ghaemy (Second Researcher), Zahra Sekhavat Pour (First Researcher)
|