Title of article :
Effect of Isocyanate Index on Physical Properties of Flexible Polyurethane Foams
Author/Authors :
Lee, C . S. university of malaya - Faculty of Science - Department of Chemistry, Malaysia , Ooi, T. L. Malaysian Palm Oil Board - Advanced Oleochemical Technology Division, Malaysia , Chuah, C . H. university of malaya - Faculty of Science - Department of Chemistry, Malaysia , Ahmad, S. Malaysian Palm Oil Board - Advanced Oleochemical Technology Division, Malaysia
Abstract :
Water blown flexible polyurethane foams were made based on ratio 1:1 (w/w)mixture of palm oil-based polyester polyol with number average molecular weight (Mn) of 5000 and commercial polyether polyol with molecular weight of 5000, 2.14 pph water and varying amounts of toluene diisocyanate (TDI). The effect of isocyanate index on the physical properties of flexible polyurethane was investigated. Isocyanate index of 100 produced the highest density foam (60.6 Kg/m3) with the lowest hysteresis (23.8%), good tensile strength (0.0995 MPa) and tear resistance (0.2468 N/mm).
Keywords :
Compression stress , density , elongation at break , flexible polyurethane , hysteresis , isocyanate index , tear resistance , tensile stress
Journal title :
Malaysian Journal of Science
Journal title :
Malaysian Journal of Science
