Abstract

Polyurethane (PU) is a versatile polymer fluid finds application in foams, coatings and adhesives etc. The high
level inflammability of PU foam leads to fire related accidents. The broad applications has lead to the present
investigation concerning about the development of flexible polyurethane foam (FPUF) with enhanced flame
retardancy. The effect of addition of melamine cyanurate flame retardant (MCFR) and organically modified
montmorillonite (OMMT) clay was investigated in the present study. The developed PU foam was tested and
compared with unmodified PU foam (control), for its flame characteristics, physical (foam density, cell
structure), mechanical (tensile strength, rebound resilience) and thermal properties. The developed PU foam
shows UL-94 flame rating of V-0 and V-1. The present investigation confirms the developed flexible
polyurethane nanocomposite foam with improved flame retardant characteristics.