Evaluation of anticratering agent based on Epoxy-Aminopropyltriethoxy silane-diethanol amine for cathodic electrocoating

Document Type : Research Article

Authors

1 Faculty of surface coatings and novel technologies, institude for color science and tech nology, Tehran

2 Institute for Color Science and Technology (ICST)

/2015.3.11.7

Abstract

In this study, resistance to crater formation in cathodic electrocoatings in the presence of prepared organic-inorganic hybrid was examined. The optimum amount of the prepared additive as an anticratering agent in an electrodeposition bath was determined. Primer-surfacer adhesion to cathodic electrocoating and electrocoating gloss in the presence of prepared additive were evaluated. The resistance to crater formation in an oil contaminated commercial automotive electrocoat showed that presence of epoxy-aminopropyl triethoxysilane-diethanolamine as an anticratering agent decreases number of craters at the cathode surface. The optimum amount of this anticratering agent was 0.4 wt%.

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