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Reinforcement of phosphorylated graphene oxide on the anticorrosive properties of waterborne acrylate-epoxy resin coatings
- Source :
- Journal of Macromolecular Science, Part A. 55:649-657
- Publication Year :
- 2018
- Publisher :
- Informa UK Limited, 2018.
-
Abstract
- Phosphorylated graphene oxide (PedGO) was synthesized through the in-situ phosphate esterification method with urea as catalyst and then embed into waterborne acrylate-epoxy resin emulsion (AE) coating to modify the coating. The TEM and AFM indicated that phosphate was uniformly decorated on GO sheets, forming a large phosphorylated graphene oxide sheets. The PedGO improved the water vapor permeability and the coating adhesion strength after 30 days of immersion in 3.5% NaCl of AE coatings, respectively. Electrochemical impedance spectroscopy measurements (EIS) revealed that the PedGO-modified AE (PedGO/AE) was an outstanding barrier against corrosive media compared with AE or GO-modified AE (GO/AE). Scratch tests also showed that the corrosion-promotion effect of PedGO in AE was inhibited. The enhanced corrosion protection performance was observed because on the one hand the PedGO can greatly prolonged the diffusion pathway of corrosive media in the coating matrix; on the other hand the organic p...
- Subjects :
- Materials science
Polymers and Plastics
Oxide
02 engineering and technology
engineering.material
010402 general chemistry
01 natural sciences
Corrosion
law.invention
chemistry.chemical_compound
Coating
law
Materials Chemistry
Acrylate
Graphene
General Chemistry
Epoxy
021001 nanoscience & nanotechnology
0104 chemical sciences
Dielectric spectroscopy
chemistry
Chemical engineering
visual_art
Emulsion
Ceramics and Composites
visual_art.visual_art_medium
engineering
0210 nano-technology
Subjects
Details
- ISSN :
- 15205738 and 10601325
- Volume :
- 55
- Database :
- OpenAIRE
- Journal :
- Journal of Macromolecular Science, Part A
- Accession number :
- edsair.doi...........5bf59e98afbdb8ac2a1422a330ef2a6d