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Effect of carbon nanofiber network formation on flammability of flexible polyurethane foams
Untreated polyurethane flexible foams (PUFs) are prone to rapid fire growth due to their low density and 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 nanoparticles, 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.
Effect of carbon nanofiber network formation on flammability of flexible polyurethane foams
Untreated polyurethane flexible foams (PUFs) are prone to rapid fire growth due to their low density and 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 nanoparticles, 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.
Effect of carbon nanofiber network formation on flammability of flexible polyurethane foams
Zammarano, Mauro (author) / Krämer, Roland H. (author) / Harris, Richard jun. (author) / Ohlemiller, Thomas J. (author) / Shields, John R. (author) / Rahatekar, Sameer S. (author) / Gilman, Jeffrey W. (author)
FR, Flame Retardants Conference, 13 ; 171-178
2008
8 Seiten, 4 Bilder, 1 Tabelle
Conference paper
English
Flexible Polyurethane Foams: Flammability
| Online Contents | 2003
Flexible Polyurethane Foams: Flammability
| British Library Online Contents | 2003
| British Library Conference Proceedings | 2009