- Author
-
Tewarson, A.
- Title
- Physico-Chemical and Combustion/Pyrolysis Properties of Polymeric Materials. Technical Report.
- Coporate
- Factory Mutual Research, Norwood, MA
- Sponsor
- National Bureau of Standards, Gaithersburg, MD
- Report
-
NBS GCR 80-295,
December 1980,
83 p.
- Distribution
- Available from National Technical Information Service
- Contract
- GRANT-NB79NADA0014
- Keywords
-
combustion products
|
fire models
|
foam (materials)
|
heat release
|
plastics
|
polymers
|
polymethyl methacrylate
|
polyoxymethylene
|
polyoxypropylene
|
polystyrene
|
polyurethane foams
|
polyvinyl chloride
|
pyrolysis
|
smoke
|
wood
|
light obscuration
- Abstract
- Data for the physico-chemical and combustion/pyrolysis properties of aromatic and nonaromatic granular and formed polymeric materials are presented for use in fire modeling as well as for hazard evaluations and basic understanding of fires. The physico-chemical and combustion/pyrolysis properties include chemical formulae, stoichiometric air-to-fuel ratio, net heat of complete combustion, heat required to generate a unite mass of vapors, surface re-radiation loss, surface temperature, combustion efficiency including its convective and radiative components, product yields, light obscuration parameter, flame convective and radiative heat flux to the surface, Spalding's B-number modified for radiation and for combustion efficiency, normalized flame heights, ratio of CO2 concentration to gas temperature above ambient ratio of optical density per unit path length to gas temperature above ambient, and energy required to generate a combustible vapor-air mixture. The dependency of various fire properties such as heat release rate, product generation rates, light obscuration, etc., and fire detection, are analyzed in terms of the fire environment (thermal and over- or underventialted) and the properties of the materials.