Flammability reduction of flexible polyurethane foams via carbon nanofiber network formation
2008 (English)In: Polymers for Advanced Technologies, ISSN 1042-7147, E-ISSN 1099-1581, Vol. 19, no 6, 588-595 p.Article in journal (Refereed) Published
Untreated polyurethane flexible foams (PUFs) are prone to rapid fire growth due to their low density and low thermal conductivity. Furthermore, the low viscosity of the decomposition products generates severe dripping that increases the fire hazard related to the combustion of PUFs. In fact, this downward flow of flaming liquid often results in a pool-fire that promotes flame propagation and boosts the rate of heat release (HRR) due to a significant increase in the burning area and to feed-back between the flame on the pool-fire and the residual foam. In this work the effect of nartoparticles, i.e., clays and carbon nanofibers (CNFs), on the HRR is investigated with special attention given to melt dripping. A modified cone calorimeter test has been developed for this purpose. It is shown that CNFs form an entangled fiber network which eliminates melt dripping and decreases the HRR.
Place, publisher, year, edition, pages
2008. Vol. 19, no 6, 588-595 p.
nanocomposite, polyurethane, flammability, foam
IdentifiersURN: urn:nbn:se:kth:diva-14213DOI: 10.1002/pat.1111ISI: 000257014100018ScopusID: 2-s2.0-47149101515OAI: oai:DiVA.org:kth-14213DiVA: diva2:331777
QC 201007262010-07-262010-07-262010-07-26Bibliographically approved