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Title
Thermogravimetric investigation on the flame-retardancy of lithium bromide added to cotton fabric
Authors
S. M. Mostashari and S. Baie
Received
November 17, 2008
Published
Volume 43 Issue 4-6 April-June
Keywords
chemical action theory, condensed phase retardation, flame-retardancy, gas dilution theory, lithium bromide,
Abstract
The present paper discusses the results obtained from the investigation on the effect that lithium bromide, as non- durable finish, exerts on the flammability of 100% cotton fabric (plain, 150 g/m2). The bone-dried weighed fabrics were impregnated with suitable concentrations of lithium bromide, through squeeze-rolling and drying. The samples were then cooled in a desiccator and reweighed with analytical precision. By using our vertical flame spread tester, the optimum add-on value for imparting flame-retardancy to cotton fabric was determined to be around 3.85 g lithium bromide per 100 g fabric. The thermogravimetric (TG/DTG) results obtained for both untreated and salt-supported cotton fabrics, at an optimum addition, were evaluated and their curves were compared and commented. The results obtained comply with condensed phase retardation, chemical action theory and gas dilution theory.
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