A COMPARATIVE STUDY ON ANTI-CORROSION PROTECTION BETWEEN WATER-BASED AND SOLVENT-BASED PAINTS

摘要

Current analysis evaluates the performance of hydrosoluble paints compared to paints with organic solvents, based on their anti-corrosive characteristics. Metal corrosion is highly relevant when economical viability is taken into consideration. Viscosity, application and adherence tests on a surface were undertaken to elaborate and test a high temperature resistant hydrosoluble system. Tests not only aimed at anti-corrosion protection but also evaluated the coloring differences of painted panels when exposed to high temperatures (600°C). The theoretical yield was also assessed by comparing results obtained from water-based systems and those from solvent-based ones for the same application. In the case of the water-based system, formulation tests with two different silicon-based resins were undertaken which were specifically developed for hydrosoluble systems. Replacement of organic solvent by a hydrosoluble-based paint did not affect significantly any physical and chemical characteristic of the paint.