Industrial & Engineering Chemistry Research, Vol.37, No.3, 944-951, 1998
Initial mechanisms of the electrocoating process
A significant increase in the quality of cataphoretic paint has been observed experimentally when suitable initial operating conditions for the deposition process are used. These results show the effect of the initial mechanisms on the quality of the paint. In this work we point out that during the initial step of the process, both the local increase in the pH and other mechanisms not yet studied occur in the cathode; for examples, partial packing of the charged micelles and the overlay of their double layers. The effect of the initial conditions on the increase in pH, on the partial packing, on the overlay of the double layers, and on the heating stress of the film just deposited have been studied.