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Intumescent coating modelingA thermal response mathematical model for an intumescent coating system is developed. The model predicts indepth temperature profiles of the solid as a function of the fundamental kinetic, mass, and heat-transfer properties of the original coating system. In the model, swelling is based on an empirical function of the paint's weight loss. The model is used to describe the effectiveness of the coating for thermal protection. Using the thermal response time at the backface of the material as a criterion, a sensitivity analysis is made with respect to variation in individual properties, such as total expansion, to provide a guide for designing improved intumescing agents. The sensitivity analysis shows that total expansion and rate of expansion, along with other material properties, are important parameters for providing thermal protection. Finally, backface temperature histories are predicted and compared to experimental data obtained from a representative fire environment. Predicted temperatures agree within a maximum error of plus or minus 20%.
Document ID
19750051527
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Cagliostro, D. E.
Riccitiello, S. R.
(NASA Ames Research Center Moffett Field, Calif., United States)
Clark, K. J.
Shimizu, A. B.
(Acurex Corp. Mountain View, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
April 1, 1975
Publication Information
Publication: Journal of Fire and Flammability
Volume: 6
Subject Category
Nonmetallic Materials
Accession Number
75A35599
Distribution Limits
Public
Copyright
Other

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