Improving the UV degradation resistance of epoxy coatings using modified carbon black nanoparticles

Degradation mechanisms of modified nano carbon black -epoxy coatings were investigated under condition of UV irradiation

Ahmad Ghasemi-Kahrizsangi; Jaber Neshati; Homeira Shariatpanahi; Esmaeil Akbarinezhad

2015

Scholarcy highlights

  • Degradation mechanisms of modified nano carbon black-epoxy coatings were investigated under condition of UV irradiation
  • ATR-FTIR analysis showed that the coating with 2.5 wt% CB nanoparticles was degraded less than epoxy coating
  • Adding 2.5 wt% CB into the coating exhibited no microcracks with a less degree of discoloration than the neat epoxy coating
  • Transmission Electron Microscopy and Field Emission Scanning Electron Microscopy confirmed that nanoparticles were finely distributed throughout epoxy resin and its solvent
  • ATR-FTIR analysis indicated that concentration of carbonyl group generated by chain scission was much less for the 2.5 wt% CB nanocoating than the neat epoxy coating
  • No microcracks were observed in 2.5 wt% CB nanocoating
  • It was revealed that carbon black nanoparticles were good UV stabilizers that could absorb UV irradiation and protect epoxy-based coatings

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