Citation

Dutkiewicz J, Laszkiewicz B, Kotek R. Fire Res. 1977; 1(2): 67-70.

Copyright

(Copyright © 1977, Elsevier Publishing)

DOI

unavailable

PMID

unavailable

Abstract

A simple fibre sample holder was applied to the oxygen index test to determine the relative flammability of filament yarns. This modification permitted the study of the effects of sample weight and position on the oxygen index (OI) of polyester fibres. In order to characterize these effects, extrapolation of the OI curves to a zero weight of a sample (intrinsic oxygen index [OI]) and introduction of a weight factor (wf) were suggested. For the control 3 tex poly(ethylene terephthalate) (PET) monofilament tested in a vertical and horizontal position, the obtained values were, respectively, [OI]ver = 0.175, wfver = 0.06 g-1 and [OI]hor = 0.174, wfhor = 0.002 g-1. The respective parameters for the flame-retardant 3 tex Heim monofil fibres were [OI]ver = 0.192, wfver = 0.11 g-1, [OI]hor = 0.198, and wfhor = 0.10 g-1; and for the 3 tex PET monofil containing 5 phr Flammex B10-, [OI]ver = 0.189, wfver = 0.03 g-1, [OI]hor = 0.174, and wfhor = 0.06 g-1.