Abstract
Functional graphene oxide (FGO) is synthesized by attaching the amino group to the surface of graphene oxide (GO) using a simple one-step preparation procedure. FGO is incorporated as a filler in epoxy (E) resin and the E/FGO composite is evaluated as a protective coating on cold rolled steel (CRS) metal substrates. The synthesized coatings are characterized using X-ray diffraction (XRD) and Fourier transform infrared (FTIR), while the dispersion of the fillers in the polymer resin is observed and evaluated using transmission electron microscopy (TEM). Corrosion resistance properties of the prepared coatings are examined in 3.5% NaCl solution using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements. Long-term corrosion protection properties of the coatings are examined by conduction gravimetric analysis over 120 days in 3.5% NaCl solution. Interface adhesion between the composite coatings and the CRS metal substrates is inspected and evaluated according to the ASTM-D3359 standard. Thermal stability and the thermal behaviors properties of the prepared composites are evaluated using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Moreover, ASTM-D2794 and ASTM-D4587 standards are followed to examine the resistances of the prepared composites to impact deformation and UV degradation, respectively. Results demonstrate that the utilization of FGO as a filler in epoxy resin may deliver advanced protection properties over epoxy or E/GO composite coatings.
| Original language | British English |
|---|---|
| Title of host publication | Handbook of Graphene |
| Publisher | Wiley-Blackwell |
| Pages | 419-442 |
| Number of pages | 24 |
| Volume | 8 |
| ISBN (Print) | 9781119468455 |
| State | Published - 29 Mar 2019 |
Keywords
- Adhesion
- Coatings
- Corrosion
- Graphene
- Impact
- Nanocomposites
- UV degradation