Materials Science Forum, Vol.517, 37-40, 2006
Characterizations of silicone - Acrylic based resin/paint coatings on mild steel panels
The properties of silicone-acrylic based resin have been characterized. Different portions of silicone resin ranging from 10% to 60% have been added into acrylic resin. The mixed resins were then applied on mild steel panels by brushing method. The coated panels are allowed to dry under ambient condition for 7 days before being characterized by electrochemical impedance spectroscopy (EIS), Scanning electron microscopy (SEM), mechanical test and potential-time measurements technique (PTM). The composition with at least 30% silicone content showed the best performance. By selecting the best silicone-acrylic composition (30% Silicone resin and 70% acrylic resin) resin have been selected to made paint. A series of paint consist of silicone-acrylic resin were designated with pigment volume concentration (PVC) ranging form 10 to 60% using titanium dioxide pigment. The thicknesses of the tested coatings were similar. By utilizing the same test methods, results showed that the coatings with approached to critical pigment volume concentration (CPVC) showed the best performance against high temperature and corrosion attacks.