In fact, flame-retardant fabric does not catch fire, it just extinguishes immediately after leaving the flame. Flame-retardant fabrics are divided into fiber flame-retardant and finishing flame-retardant. Post-finishing flame retardant is divided into two types: disposable and durable flame retardant.
Classification of flame-retardant fabrics
Usually, the flame-retardant fabrics we imagine are non-burning in everyone’s impression. In fact, this is not the case. In fact, flame-retardant fabrics do not catch fire, they just extinguish immediately after leaving the flame. There are corresponding flame-retardant standards, such as: en470- 1. en531, en532, nfpa2112, nfpa70e, etc.
Flame retardant fabrics are divided into two types: fiber flame retardant and post-finishing flame retardant. Post-finishing flame retardant is divided into two types: disposable and durable flame retardant.
Fiber flame retardant, also called permanent flame retardant fabric, is a work done in the early stage of the entire cloth making process. It mainly uses flame retardant fibers to weave gray fabrics. The flame retardant effect is permanent and can generally be maintained until more than 50 times of washing. , has a good washing effect, especially the flame-retardant yarn used is polypropylene (polyacrylic, commonly known as acrylic), which will shrink and carbonize when exposed to fire. It will be extinguished as soon as the fire source is removed. It will not produce black smoke if it does not melt and will not A secondary fire occurs. It is commonly used in clothing fabrics.
Disposable flame retardant fabrics are ordinary fabrics that have been treated with flame retardants in the later dyeing and finishing process. Their biggest disadvantage is that the flame retardant effect disappears or significantly declines after washing. Usually we use it in some occasions where the number of washing times is small, such as Hotel curtains, etc.
The flame retardant commonly used in durable flame retardant fabrics is a durable finishing flame retardant used for cotton fibers and blended fabrics. Its main feature is that after using this flame retardant to produce and finish, the fabric can be It has good flame retardant ability within 50 times of washing.
There is not much difference in the initial flame retardant properties of the three, but the flame retardant properties of the disposable flame retardant fabric completely disappear after washing.
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