THE LEADING EXPERTS IN DESIGN AND MANUFACTURE CUSTOM GARMENTS
2024-02-26 09:30:28
How to judge the performance of flame retardant fr fabric?
Fireproof and flame-retardant fabric is a special type of fabric that must pass relevant testing reports and meet the corresponding flame retardant standard requirements. Flame retardant fr fabric are not impossible to ignite. After special processing, they can prevent the spread of flames and automatically extinguish within a certain period of time, thereby reducing property damage and ensuring life safety. Flame retardant fr fabric have a wide range of applications and play an important role in both daily life and work.
The flame retardant performance can be evaluated by the burning rate of the fabric. Contact the flame for a certain period of time according to the prescribed method, then remove the flame and measure the time for the fabric to continue burning with flame or without flame, as well as the degree of damage to the fabric; At the same time, if there are no harmful substances to human health and the environment under good flame retardant performance, it indicates that the quality of the flame retardant fabric is better.
The fire will extinguish immediately after leaving, depending on the temperature and airflow (oxygen) at the time of the fire, as well as the duration of being in this high-temperature environment. If the oxygen index of textile materials is above 21% (the oxygen concentration in the natural air is 21%), then the textile product has self extinguishing properties. According to the magnitude of the extreme oxygen index, fr fabric are usually classified into four levels: flammable (LOI less than 20%), combustible (LOI equal to 20% -26%), flame retardant (LOI equal to 26% -34%), and otherwise (LOI>35%). The shorter the time of flame combustion and flameless combustion, the lower the degree of damage, indicating better flame retardant performance of the fabric; On the contrary, it indicates poor flame retardant performance of the fabric.
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