Effects of Constructional Factors on the Burning Rates of Textile Structures

Abstract

The burning behavior of thermoplastic fabrics has been studied in terms of the form or gross structural shape in which they are presented to their own flame front. Using the TRI Flammability Analyzer, mass burning rates through ma terials in any chosen direction were measured at various levels of atmospheric oxygen concentration. Gross differences in burning behavior were observed, reflecting the influence of such factors as weave patterns, yarn twist, and linear density. Studies on multilayer structures revealed that double layers of thermoplastic fabrics burn faster than single layers. Ex planations for some of the observed phenomena are offered in terms of mechanical and heat transfer factors.