Citation

Benrashid R, Nelson GL. J. Fire Sci. 1994; 12(5): 452-480.

Copyright

(Copyright © 1994, SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

Polycarbonate sheet installed as windows in a house in Newton, Massachusetts, was subjected to natural weathering for a period of 12 The surface of the sheet turned yellow. The coating material on the surface was peeled off, then the exposed layers of polycarbonate surface carefully removed. The DSC of the exposed surface showed multiple transitions compared to a control which showed only one T(g). TGA studies showed early weight loss for the exposed polycarbonate compared to the control. Flammability studies including Oxygen Index, Radiant Panel, OSU Heat Release Rate Calorimetry and NBS Smoke Chamber showed an increase in the flammability of exposed,sheet compared to a 12 year aged control. Reasons for this increase in flammability are discussed.