Modeling epoxy foams exposed to fire-like heat fluxes.
Abstract
A decomposition chemistry and heat transfer model to predict the response of removable epoxy foam (REF) exposed to fire-like heat fluxes is described. The epoxy foam was created using a perfluorohexane blowing agent with a surfactant. The model includes desorption of the blowing agent and surfactant, thermal degradation of the epoxy polymer, polymer fragment transport, and vapor-liquid equilibrium. An effective thermal conductivity model describes changes in thermal conductivity with reaction extent. Pressurization is modeled assuming: (1) no strain in the condensed-phase, (2) no resistance to gas-phase transport, (3) spatially uniform stress fields, and (4) no mass loss from the system due to venting. The model has been used to predict mass loss, pressure rise, and decomposition front locations for various small-scale and large-scale experiments performed by others. The framework of the model is suitable for polymeric foams with absorbed gases.
- Authors:
- Publication Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 965105
- Report Number(s):
- SAND2004-6145C
TRN: US200920%%238
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Conference
- Resource Relation:
- Conference: Proposed for presentation at the 19th Annual ACERC & ICES held February 17-18, 2005 in Provo, UT.
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; EPOXIDES; FOAMS; MATHEMATICAL MODELS; FIRES; HEAT TRANSFER; THERMAL DEGRADATION; THERMAL CONDUCTIVITY
Citation Formats
Hobbs, Michael L. Modeling epoxy foams exposed to fire-like heat fluxes.. United States: N. p., 2004.
Web.
Hobbs, Michael L. Modeling epoxy foams exposed to fire-like heat fluxes.. United States.
Hobbs, Michael L. 2004.
"Modeling epoxy foams exposed to fire-like heat fluxes.". United States.
@article{osti_965105,
title = {Modeling epoxy foams exposed to fire-like heat fluxes.},
author = {Hobbs, Michael L},
abstractNote = {A decomposition chemistry and heat transfer model to predict the response of removable epoxy foam (REF) exposed to fire-like heat fluxes is described. The epoxy foam was created using a perfluorohexane blowing agent with a surfactant. The model includes desorption of the blowing agent and surfactant, thermal degradation of the epoxy polymer, polymer fragment transport, and vapor-liquid equilibrium. An effective thermal conductivity model describes changes in thermal conductivity with reaction extent. Pressurization is modeled assuming: (1) no strain in the condensed-phase, (2) no resistance to gas-phase transport, (3) spatially uniform stress fields, and (4) no mass loss from the system due to venting. The model has been used to predict mass loss, pressure rise, and decomposition front locations for various small-scale and large-scale experiments performed by others. The framework of the model is suitable for polymeric foams with absorbed gases.},
doi = {},
url = {https://www.osti.gov/biblio/965105},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Nov 01 00:00:00 EST 2004},
month = {Mon Nov 01 00:00:00 EST 2004}
}