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Title
The superiority of red phosphorus over polymethaphosphate as flame-retardants on cellulosic substrates
Authors
S. M. Mostashari
Received
March 13, 2009
Published
Volume 43 Issue 4-6 April-June
Keywords
cotton fabric, flame-retardancy, red phosphorus, sodium polymetaphosphate
Abstract
Red phosphorus and sodium polymetaphosphate, observed as efficient flame-retardants for cotton fabric, have been selected for a comparative study, in quantities evidenced as effective in the author’s previously published papers. The vertical flame spread test method, applied for the evaluation of flame-retardancy, was observed to introduce the optimum loading for achieving flame-retardancy, the outcomes illustrating the superiority of red phosphorus over sodium polymetaphosphate. Thermogravimetric explanations agreed with the data of the vertical flame spread test, which might be beneficial for a better understanding of the action of red phosphorus versus sodium polymetaphosphate, in terms of flame-retardancy. It is deduced that the efficiency of flame-retardants depends on their structure, as well as on their physico-chemical characteristics.
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