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Studies on Flame Retardant Polyurethanes and Their Blends with Epoxy Resin for Nano- Composite and Nano-Coating Applications

Rasmika Patel, Mayank Shah, Amin Hirani

Flame retardant polyurethanes were synthesized by reacting a diphosphorus based monomer, bisphenol- A bis (hydroxy phenyl phosphonate) (BABHPP) with different diisocyanates. Polyurethanes were characterized using chemical and instrumental analysis techniques like elemental analysis, FTIR, GPC techniques. Polyblends were prepared by mixing the polyurethanes with conventional DGEBA resin in different proportions and used for casting and coating purposes. Nanocomposites were prepared using organo modified montmorillonite clay. Thermal, flame retardant, impact, tensile properties of nanocomposites, various coating performances and properties were determined. Data reveals that polyblends and nanocomposites show better properties compare to the neat polyurethanes.