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Optimization of a Waterborne Epoxy Coatings Formulation via Experimental Design

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Waterborne Epoxy based coatings were prepared by using a waterborne epoxy resin and a suitable hardener. The formulation and optimization procedure were carried out on the bases of experimental designs by the mixture design technique in which the important paint properties are modeled by using special cubic model. The corrosion behavior of these coatings was investigated using electrochemical impedance spectroscopy (AC impedance spectroscopy) for a period of 21 day exposure to a solution of 3.5 wt% NaCl in distilled water. Coating parameters such as the pore resistance and the coating capacitance were measured by ac impedance technique and considered as the response in the experimental design. Prog. Color Colorants Coat. 2(2009), 23-33. © Institute for Color Science and Technology.

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