M Mahmoudian - Nanotechnology Research Institute, Urmia University, Urmia, Iran
E Nozad - Nanotechnology Research Institute, Urmia University, Urmia, Iran

Effectiveness of epoxy coatings filled with linseed oil loaded micro capsules was investigated for healing the cracks generated on steel. Micro capsules were synthesized by in-situ polymerization method. Characteristics of these micro capsules were studied by Fourier-transform infrared spectroscopy (FTIR), Differential scanning calorimetry (DSC), Scanning electron microscopy (SEM) for chemical investigation, thermal stability and surface morphology respectively. Anti-corrosion effect of prepared coating was investigated by Electrochemical impedance spectroscopy (EIS). Cracks in a paint film were successfully healed when linseed oil was released from microcapsules ruptured under simulated mechanical action. Linseed oil healed area was found to prevent corrosion of the substrate.

Self-healing, Corrosion, Linseed oil, Microcapsule