Polyurethane foam is one of the most unique, versatile, and diverse thermoset cellular plastics. Developed in the late 1930s, this plastic is mainly composed from the reaction between hydroxyl functionalities (polyol) and isocyanates (TDI, MDI, or aliphatic). The relative ratio of these fundamental components determine the polymeric backbone morphology and ultimately the physical properties . . . → Read More: Polyurethane foam technology