Citation

Lewin M. J. Fire Sci. 1997; 15(4): 263-276.

Copyright

(Copyright © 1997, SAGE Publishing)

DOI

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PMID

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Abstract

Some results of work carried out on flame retarding of cotton and wool fabrics are reviewed.* Cotton fabrics are rendered flame retardant upon treatment with ammonium sulfamate (AS) with urea or a urea-based crosslinking agent, as co-additive,in the pad-dry-cure finishing treatment, with curing at 180-200 degrees C for one to three minutes. Wool fabrics are similarly treated with sulfamic acid (SA) in the presence of urea at 140-160 degrees C. In both cases a very high degree of flame retardancy is obtained and the treated fabrics pass the vertical strip test (VST) also after fifty hard water alkaline launderings. In both cases, the fabrics retain their soft hand. In order to overcome the afterglow in cotton, a combined sulfation-phosphorylation process was developed.