The process and conditions of burning flame retardant fabrics

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Flame retardant fabric flame retardant flame retardant fiber

Flame-retardant fabrics reduce the flammability of materials in flames, slow down the spread of flames, and quickly self-extinguish when the flames are removed. The burning process and conditions of flame-retardant fabrics The burning process of flame-retardant fibers, that is, from ignition to final combustion products, requires a series of complex physical and chemical changes. These changes have no obvious stages and can usually be divided into: ( 1) Thermal cracking of textile materials produces flammable gases, non-flammable gases and carbonized residues. (2) Flammable pyrolysis, when the temperature reaches the ignition point or encounters other fire sources, it ignites and releases heat, light and smoke. (3) The heat released causes the fiber to continue to crack and burn, causing the flame to spread. In this way, the three elements of flame-retardant fabrics, flammable substances, heat and oxygen form a combustion cycle. In addition to the gas-phase flaming combustion of the above-mentioned flammable gases and oxygen, there is also the solid-phase flameless combustion of the carbonized residue formed during cracking and oxygen. Flameless combustion requires much higher temperatures than flaming combustion, but this smoldering combustion can also burn the material and sometimes cause a sudden burst of flame into a flaming combustion.
：Textile

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