Improvement of properties of coating systems with cardanol modified epoxy primer

Ecological and economic issues in the new generation coating industries have led to the maximum utilization of naturally occurring renewable materials for polymer synthesis. this paper for the first time demonstrates the use of cardanol modified epoxy primer in three component coating systems and the findings of the change of resin on coating behaviour and therefore its application properties on concrete. the three component coating systems were prepared using cardanol modified virgin/pigmented epoxy and polyurethane. the coating properties of the systems were investigated for their physico-mechanical properties,chemical and corrosion resistance and the developed coating systems showed remarkable performance in terms of increase in tensile strength,stronger bonding with concrete and lowering of water vapour transmission.