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Development of nonflammable cellulosic foamsThe development of a moldable cellulosic foam for use in Skylab instrument storage cushions is considered. Requirements include density of 10 lb cu ft or less, minimal friability with normal handling, and nonflammability in an atmosphere of 70 percent oxygen and 30 percent nitrogen at 6.2 psia. A study of halogenated foam components was made, including more highly chlorinated binders, halogen-containing additives, and halogenation of the cellulose. The immediate objective was to reduce the density of the foam through reduction in inorganic phosphate without sacrificing flame-retarding properties of the foams. The use of frothing techniques was investigated, with particular emphasis on a urea-formaldehyde foam. Halogen-containing flame retardants were deemphasized in favor of inorganic salts and the preparation of phosphate and sulphate esters of cellulose. Utilization of foam products for civilian applications was also considered.
Document ID
19720022851
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Luttinger, M. (Battelle Memorial Inst. Columbus, OH, United States)
Date Acquired
September 2, 2013
Publication Date
July 27, 1972
Subject Category
Materials, Nonmetallic
Report/Patent Number
NASA-CR-128512
Accession Number
72N30501
Funding Number(s)
CONTRACT_GRANT: NAS9-12412
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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