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Effect of carbon nanofibers on flammability of polyurethane foams
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
2009 (English)In: Changing times. New opportunities. Are you prepared?, 2009Conference paper (Refereed)
Abstract [en]

Untreated flexible polyurethane 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 carbon nanofibers (CNFs) on the HRR is investigated with special attention given to melt dripping phenomena. 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
, International SAMPE Symposium and Exhibition (Proceedings), ISSN 0891-0138 ; 54
Keyword [en]
Cone calorimeter, Decomposition products, Downward flow, Fiber networks, Fire growth, Flame propagation, Flexible Polyurethanes, Low density, Low viscosity, Polyurethane Foam, Rate of heat release, Carbon nanofibers, Fires, Flammability, Rigid foamed plastics, Foams
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-152784ScopusID: 2-s2.0-74949093547ISBN: 978-193455105-9OAI: diva2:751972
SAMPE '09 Spring Symposium Conference Proceedings, 18 May 2009 through 21 May 2009, Baltimore, MD, United States

QC 20141002

Available from: 2014-10-02 Created: 2014-10-01 Last updated: 2014-10-02Bibliographically approved

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Krämer, Roland H.
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