Common methods for judging the performance and quality of flame retardant fabrics

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Fabric Cotton Policy

Since there are countless fires involving flammable fabrics, the tragedy of fires is simply indescribable. How can we reduce the occurrence of such tragedies? Flame retardant fabrics have received close attention from various countries. In particular, there are strict requirements on the performance, standards and environmental protection of flame-retardant fabrics and textiles. There are two methods commonly used in my country to evaluate the performance of flame-retardant textiles.

Method 1: The flame-retardant fabric after flame-retardant finishing is in contact with the flame according to the prescribed method. Within the prescribed time, the shorter the flame burning time and the flameless burning time, the greater the degree of damage. The lower the value, the better the flame retardant performance of the fabric. At the same time, if the flame retardant performance is good and there are no harmful substances to the human body and the environment, the quality of the flame retardant fabric is better; conversely, the longer the burning time, the greater the degree of damage. Heavy means that the flame retardant performance is poor, and the production of harmful substances means that the quality of the flame retardant fabric is extremely poor.

Method 2: Judge by the extreme oxygen index (LOI) of the burning fabric. Theoretically, if the oxygen index of textile materials is above 21% (the oxygen concentration in natural air is 21%), the textile product will be self-extinguishing. According to the size of the extreme oxygen index, fabrics are usually divided into flammable (LOI less than 20%), combustible (LOI equal to 20%–26%), flame-retardant (LOI equal to 26%–34%) and non-combustible (LOI> 35%) four levels.

When testing the flame retardant properties of the above four levels, the flame retardant function is weakened and the flammability is enhanced in order from large to small with extreme oxygen index. In addition, this method is in the process of testing.

The above two methods are relatively common standards for judging the quality of flame retardant fabrics.
：Textile

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