Prediction of the Flammability of Multilayer Fabric Packet

Abstract

Level of flammability protection varies, depending on the construction and fit of the protective clothes, on the materials of fibers from which these clothes are made, oxygen and humidity concentration in the environment, even on the weave type of fabric. In this research study the prediction of flammability of the multilayer fabric packet was carried out. Fabric woven from the metaaramid Nomex Delta TA 18.5 tex × 2 spun yarns was used for the investigations. The flammability properties of tested fabric multilayer packet are determined using Burning Cabinet Type BKD for standard horizontal flammability test methods due to theirs similarity to fabric real flammability behaviour. The dependence of fabric flammability (crack time) on number of fabric layers was found. It was established that flammability process could be analyzed by two linear empirical equations. These experimental investigations were proved by a heat conduction theory.