- Author
- Lee, T. G. | Parker, W. J. | Tyron, M.
- Title
- Laboratory Fire Performance Characteristics of a Dibromotetrafluoroethane-Blown Rigid Polyurethane Foam.
- Coporate
- National Bureau of Standards, Washington, DC
- Journal
- Journal of Fire and Flammability, Vol. 6, 499-510, October 1975
- Keywords
- polyurethane foams | rigid foams | dibromotetrafluoroethane | fire tests | flame spread | heat release rate | ignition temperature | smoke
- Identifiers
- flame spread index; rigid urethane foam
- Abstract
- The fire performance characteristics of a dibromotetrafluoro-ethane-blown rigid polyurethane foam with cord density of 0.046 g/cm3 were measured by several laboratory test methods. Measurements included: Surface flammability, smoke and gases generated at elevated temperature and during combustion, ignition temperature, rate of heat release, and fire growth. The maximum concentration of the blowing agent in the specimen was approximately 13 wt percent. The release of the blowing agent from the heated specimen began at about 60 deg C and reached a rate of about 3 wt percent/hr at 100 deg C. The material had a flame spread index (ASTM E162) of 11 and smoke levels (NFPA 258-T) of 170 and 480, maximum specific opical density under non-flaming and flaming exposures, respectively. The measured rate of heat release was 8.8 W/cm2, about five times that of a fibrous glass insulation. The measured flash ignition temperature was 530 deg C for the material.