Thermal and fire behavior of isophorone diisocyanate based polyurethane foams containing conventional flame retardants
Date
2018-03-10Keywords
Flame retardance
Foams
Morphology
Polyurethane
Thermogravimetric analysis (TGA)
Abstract
This work reports on the fire behavior of isophorone diisocyanate-based polyurethane foams containing different conventional flame retardants (FRs) such as melamine, ammonium polyphosphate, aluminum hydroxide, expandable graphite, and their combinations. The foams were obtained in a laboratory scale and characterized in terms of their morphology, density, thermal stability, and fire behavior. According to atomic force microscopy, the incorporation of FRs decreased the phase separated domain size. The cellular structure of the foams was examined qualitatively by scanning electron microscopy while the quantitative analysis of the surrounding skin was performed by optical microscopy and Image J. The FR containing foams showed more and smaller cells. The thermogravimetric analysis showed that the FRs had no influence in the initial degradation temperature of the foams. However, the obtained residue values were higher than the theoretical ones, indicating that there was some type of interaction ...
Type
journal article