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A molecular-level fire growth parameter
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DOI：10.1016/j.polymdegradstab.2020.109478.png)
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摘要
En 中文
The relationship between the atomic composition of polymers and the fuel generating reactions in fires has been studied at various levels using molecular dynamics simulations of polymer thermal decomposition, molar group contributions to combustion properties, and finite element models of burning that require properties obtained from thermal analyses. In this study, a conceptual model is used to link the molecular-level processes of flaming combustion measured in thermal analysis to the fire response of a polymer at the continuum level. A scaling parameter emerges from this analysis called the fire growth capacity/FGC that includes ignitability and burning rate. The FGC was measured in a microscale combustion calorimeter for 32 polymers having a wide range of atomic composition, thermal stability and char forming tendency. It was found that FGC successfully ranks the expected fire performance of these polymers when subjected to a small flame and radiant heat. Published by Elsevier Ltd.
Keyword:
THERMAL-DEGRADATION
DYNAMICS MODEL
FLAMMABILITY
POLYMERS
DECOMPOSITION
KINETICS
HEAT
THERMODYNAMICS
PYROLYSIS
IGNITION
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7.4
论文数:
9.5K
被引数:
3.3W
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