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Intumescent-ablators as improved thermal protection materialsNitroaromatic amine-based intumescent coatings were improved with regard to their thermal protection ability by adding endothermic decomposing fillers with endotherms at or near the exothermic reaction of the intumescent agent, since the effectiveness of the intumescent coatings without fillers is reduced by the exothermic behavior of the coatings during thermal activation. Fillers were dispersed directly in the base coating. Potassium fluoborate, ammonium fluoborate, zinc borate, and ammonium oxalate function as endothermic ablative materials at specific temperature regions, and also enhance the char formation during the intumescent process.
Document ID
19770055115
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sawko, P. M.
(NASA Ames Research Center Moffett Field, CA, United States)
Riccitiello, S. R.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
April 1, 1977
Subject Category
Nonmetallic Materials
Accession Number
77A37967
Distribution Limits
Public
Copyright
Other

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