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Thermal Performance of Aircraft Polyurethane Seat CushionsAircraft seat materials were evaluated in terms of their thermal performance. The materials were evaluated using (a) thermogravimetric analysis, (b) differential scanning calorimetry, (c) a modified NBS smoke chamber to determine the rate of mass loss and (d) the NASA T-3 apparatus to determine the thermal efficiency. In this paper, the modified NBS smoke chamber will be described in detail since it provided the most conclusive results. The NBS smoke chamber was modified to measure the weight loss of material when exposed to a radiant heat source over the range of 2.5 to 7.5 W/sq cm. This chamber has been utilized to evaluate the thermal performance of various heat blocking layers utilized to protect the polyurethane cushioning foam used in aircraft seats. Various kinds of heat blocking layers were evaluated by monitoring the weight loss of miniature seat cushions when exposed to the radiant heat. The effectiveness of aluminized heat blocking systems was demonstrated when compared to conventional heat blocking layers such as neoprene. All heat blocking systems showed good fire protection capabilities when compared to the state-of-the-art, i.e., wool-nylon over polyurethane foam.
Document ID
Acquisition Source
Ames Research Center
Document Type
Reprint (Version printed in journal)
Kourtides, D. A.
(NASA Ames Research Center Moffett Field, CA United States)
Parker, J. A.
(NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
August 18, 2013
Publication Date
October 1, 1982
Publication Information
Publication: Journal of Fire and Flammability
Publisher: Technomic Publishing Co., Inc.
Volume: 13
ISSN: 0022-1104
Subject Category
Inorganic And Physical Chemistry
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