International. A study developed in Theran, Iran, a method for improving the coverage of the edges of cathode electrocoatings by silica nanoparticles.
The study analyzed the effect of silica nanoparticles on the rheology of the curing process, anticorrosive behavior, edge protection and morphology.
Field emission scanning electron microscopy (FE-SEM) is used to investigate the dispersion of nanoparticles in the coating matrix. Anticorrosive behavior is studied by electrochemical impedance spectroscopy (EIS) and salinity tests.
Rheometric mechanical spectrometer (RMS) and dynamic mechanical thermal analysis (DMTA) are used to investigate the rheology of the curing process and the curing behavior of coatings, respectively. The minimum viscosity in the molten state has increased significantly in the presence of the nanoparticles to 4% by weight.
The results show a significant improvement of the coatings of the edges in the presence of the nanoparticles to 4% by weight.
Source: www.sciencedirect.com
