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Gregory T. Linteris, John L. Pagliaro, Peter B. Sunderland
The goal of the work was to determine the flammability of R1234ze(E) (C3H2F4) per the Japanese High Pressure Gas Law (see Appendix I). Tests were also performed with R32 (CH2F2), R134a (C2H2F4) and methane (CH4), to provide a baseline for comparison of the
Gregory T. Linteris, Viswanath R. Katta, Fumiaki Takahashi, Harsha K. Chelliah, Oliver Meier
Several fire suppressants are under consideration to replace CF3Br for use in suppressing fires in aircraft cargo bays. In an FAA performance test simulating the explosion of an aerosol can, however, the replacements, when added at sub-inerting
Douglas M. Fox, Richard H. Harris Jr., Jeffrey W. Gilman
The use of natural and non-toxic compounds to improve the properties of polymers has received significant attention over the past decade. In this study, a polyhedral oligomeric silsesquioxane (POSS) tethered imidazolium surfactant was used to exchange
Gregory T. Linteris, Donald R. Burgess Jr., Fumiaki Takahashi, Viswanath R. Katta, Oliver Meier
Several agents are under consideration to replace CF3Br in suppressing aircraft cargo bays fires. In a Federal Aviation Administration performance test simulating the explosion of an aerosol can, however, the replacements, when added at sub-inerting
Rick D. Davis, Yeon S. Kim, Richard H. Harris Jr., Marc R. Nyden, Nasir M. Uddin, Treye Thomas
An innovative technology was evaluated to generate fire and health safe soft furnishings. Nanoparticle-based thin coatings on a polyurethane foam and nonwoven barrier fabric were applied using Layer-by-layer (Lbl) assembly. This is the first report of
Engineered nanoparticles, such as carbon nanotubes (CNTs) and nanofibers (CNFs) are increasingly being used as fire retardants and performance additives in polymeric materials. However, because of their small size and ability to interact with biological
Numerical fire codes are being widely used for understanding normal gravity fires. The goal of the present project was to modify one such code, the National Institute of Standards and Technology Fire Dynamics Simulator, so that it can be used to accurately
Yeon S. Kim, Rick D. Davis, Jaime C. Grunlan, Amanda A. Cain
For the first time, Layer-by-layer (LbL) assemblies made with carbon nanofiber (CNFs) are shown to improve the fire performance of polyurethane foam. The (359 ± 36) nm thick four bilayer coating of polyethyleneimine/CNF (cationic layer) and poly(acrylic
It is desirable to replace Halon 1301, CF3Br, as the fire suppressant used in cargo bay fire suppression. Unfortunately, some candidate agents for replacing Halon 1301, in particular C2HF5, C3H2F3Br, C6F12O, were found to create greater pressure rise in an
Gregory T. Linteris, Mauro Zammarano, Boris Wilthan, Leonard M. Hanssen
In large-scale fires, the input of energy to burning materials occurs predominantly by radiative transfer. The in-depth absorption of radiant energy by a polymer influences its ignition time and burning rate. The present investigation examines two methods
Mauro Zammarano, Douglas M. Fox, Szabolcs Matko, Takashi Kashiwagi, Jeffrey W. Gilman, Rick D. Davis
Scientists are shifting their attention towards technology sustainability and sustainable materials, specifically in terms of energy and environmental impacts. The flame retardant community is also more concerned about these aspects. The recent banning of
Fire resistive materials (FRMs) serve a critical function in insulating (steel) structures to limit steel temperature rise during a fire exposure. This paper provides an overview of FRMs, focusing on the measurement of their thermophysical properties
Douglas M. Fox, Mauro Zammarano, Jeffrey W. Gilman
Polyhedral oligomeric silsesquioxane (POSS) and cellulose were reacted in the ionic liquid, 1-ethyl-3-methylimidazolium acetate (EmiAc). Side reactions between the EmiAc and each reactant were prevalent, but use of water as the coagulating solvent produced
Richard G. Gann, Jason D. Averill, Erik L. Johnsson, Marc R. Nyden, Richard D. Peacock
Estimation of the time available for escape (ASET) in the event of a fire is a principal component in fire hazard or risk assessment. Valid data on the yields of toxic smoke components from bench-scale apparatus is essential to accurate ASET calculations
This is the first reported use of Layer-by-Layer (LBL) assembly to fabricate thin film coatings on polyurethane foam, of incorporating carbon nanofibers (CNF) into LBL fabricated coatings, and of using LBL fabricated coatings to reduce the flammability of
Florian Kempel, Bernhard Schartel, Anja Hofmann, Gregory T. Linteris, Richard E. Lyon, Richard N. Walters, Stanislav Stoliarov
Two different numerical simulation tools, Fire Dynamic Simulator FDS and ThermaKin, are investigated with respect to their capability to predict the mass loss rate of polymer materials exposed to different fires. For validation, gasification apparatus and
Kathryn M. Butler, Sergio R. Idelsohn, Julio M. Marti, Eugenio Onate, Riccardo Rossi
The versatility of polymeric materials, as demonstrated in such features as high strength, low weight, ease of processing, and capability to form into complex shapes, have led to their widespread industrial application in aircraft structures
Kathryn M. Butler, Eugenio Onate, Riccardo Rossi, Julio M. Marti, Sergio R. Idelsohn
The effects of the thermal properties of three flooring materials on the spread rate of polymer melt over the surface were studied using a model based on the Particle Finite Element Method (PFEM). The high thermal conductivity of steel keeps the steel
Kathryn M. Butler, Florian Kempel, Bernhard Schartel, Anja Hofmann, Eugenio O?, Sergio R. Idelsohn, Riccardo Rossi, Julio M. Marti
The capability of the Particle Finite Element Method (PFEM, developed by CIMNE) to model the complex fire behaviour of polymers in the UL 94 scenario was investigated. For validation, a series of four PC/ABS blends were chosen, which covered different UL
Rick D. Davis, Joannie W. Chin, Chiao-Chi Lin, Sylvain H. Petit
Exposure to simulated ultraviolet sunlight at 50 C and 50% relative humidity caused a significant deterioration in the mechanical performance of polyaramid and polyaramid/polybenzimidazole based outer shell fabrics used in firefighter jacket and pants
Richard G. Gann, Nathan D. Marsh, Vyto Babrauskas, Stephen Grayson
The science of understanding how fires burn and how heat smoke and gases are generated and affect people has progressed substantially in the last half century. The principles of facility design for life safety in fires have reached a degree of maturity
Douglas M. Fox, Mauro Zammarano, Jeffrey W. Gilman, Jieun Lee, Eric Balsley, Erica Ford
Due to its strength, charring ability, and biodegradability, cellulose-based reinforced polymers have received considerable attention. However, its high polarity, large molecular size, and solvent resistivity, have often resulted in immiscible or
The Outer Shell of the jacket and pants of the firefighter s protective clothing is constructed of a fabric that is commonly a blend of polyaramid, polybenzimidazole, and/or poly(melamine-formaldehyde) fibers. The Outer Shell contributes to the thermal and