Authors : M.O. Edoga and E.A. Egila
Abstract: The study of development and characterization of flexible polyurethane foams has been carried out principally by reacting non-conventional polyether polyol (which contained some amount of CaC2) and toluene diisocyanate with small proportions of silicon oil, stannous octoate, dimethylethylamine, methylene chloride and distilled water in a glass reactor. At subsequent mixing stages, the reactants were thoroughly mixed using an electrically operated mechanical stirrer for 30 min. At the end of the reaction, the polyurethane resins were formulated by simplistic unifactor approach into four foam samples (A-D) at a mould temperature of 60�C and atmospheric pressure. The physicochemical and mechanochemical properties of the various samples were determined. The results show that sample B possessed the best quality whose properties are given as follows: density -15.90 kg m 3; water absorption -998.4%; tensile strength -50.72 k N m-2; shear (tear) strength -373 N m-2; compression set -10% and elongation at break -271.42%.
M.O. Edoga and E.A. Egila , 2008. Development and Characterization of Flexible Polyurethane Foam: Part I- Physicochemical and Mechanochemical Properties. Journal of Engineering and Applied Sciences, 3: 647-650.