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As a contribution to the First International Seminar on Industrial Innovation in Electrochemistry S3iE held in Curitiba-Pr, Brazil on 16-17 September 2013 a collaborative work between an institute for applied research and supplier of paints for industrial applications, is presented. In this work the kinetics of the cure paint film based on epoxy high solid with VOC-volatile organic compounds was studied by Multi-Speckle Diffusion Wave Spectroscopy technique. The resistivity of paint film was determined by electrochemical impedance spectroscoA RTIC LE TH 9 78 Cure Characteristics of Industrial Commercial Paint Using Diffusion Wave Spectroscopy and the Some Properties of Paint Film Determinated by Electrochemical Impedance Spectroscopy py-EIS. VOC paints have industrial applications that require high resistance to corrosion and wear. The control of the kinetics of paints film is of topmost importance to manufacturers and users in diverse industrial applications in different substrates and conditions. In the kinetics studies of film process formation there is three distinct stages. The first stage was attributed to evaporation of the solvent with a small decrease in the fluidity factor. The second stage present a pronounced decrease of the fluidity factor, consequence of increased viscosity of the paint and reorganization of solid paint particles was observed. The last stage is the cohesion of the paint film, i.e., a complete cure. The Diffusion Wave Spectroscopy technique used to study the kinetic of cure of the paint films showed to be very useful to monitor and display the movement of the laser light scattering within the paint films as a function of time. The chemical characterization of the cured film was done by infrared spectroscopy measurement and for EIS measurements a sample of carbon steel was covered with commercial paint.

Cure Characteristics of Industrial Commercial Paint Using Diffusion Wave Spectroscopy and the Some Properties of Paint Film Determinated by Electrochemical Impedance Spectroscopy