- Author
-
Butler, K. M.
|
Baum, H. R.
|
Kashiwagi, T.
- Title
- Three-Dimensional Kinetic Model for the Swelling of Intumescent Materials.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
NISTIR 5499
September 1994
- Book or Conf
- National Institute of Standards and Technology. Annual Conference on Fire Research: BOOK OF ABSTRACTS. October 17-20, 1994,
Gaithersburg, MD,
109-110 p.,
1994
- Keywords
-
fire research
|
intumescent coatings
|
kinetics
|
swelling
|
heat transfer
|
gasification
|
fire models
- Abstract
- An intumescent coating protects the underlying surface from fire by swelling into a thick insulating char. Design of intumescent materials has proceeded largely by systematic testing of a variety of formulations, since the mechanisms of physical, thermal and chemical behavior are not as yet well understood. Previous models of intumescent behavior have treated the system as a one-dimensional heat transfer problem through a coating consisting of a char layer and a layer of virgin material separated by a thin pyrolysis zone. In this work, a fully three-dimensional, time-dependent numerical model combining the dynamics of the swelling process, the heat transfer through the coating, and the chemistry of gasification is described.