Vol. 3, Issue 5 (2016)
Synthesis, characterization and application of soya fatty acid based blend polyol in polyurethane acrylate surface coating by UV curing
Author(s): Chirag J Patel, Nirmit N Patel, Bhaumik M Patel
Abstract: Acrylated Polyols were synthesized by reacting PEG-200 and soya-fatty acid by esterification, epoxydation and acrylation process respectively. Epoxyester Polyol was synthesized by reported method as per literature. Acrylated Polyols & epoxy ester were blended in different weight ratio. Acrylated Polyols were characterized by FT-IR analysis. Polyurethane acrylate oligomer was prepared from blend polyols with Hexamethylene diisocyanate by taking 1:1 and 1:2 NCO/OH ratios. They show exceptional combination of properties. UV curable coating compositions were prepared by simple blending by Polyurethane acrylate oligomer, reactive diluents with photo initiator and were coated on MS penal. Coated Penal is cured by UV light and monitoring by FT-IR analysis. This UV coating films were evaluated by mechanical, chemical and thermal properties. As the epoxy ester ratio increase the thermal degradation decrease also mechanical properties increase. Aromatic diisocyanate give harder film properties.