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• Time of issue:2019-06-05
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(Summary description)Generally, the flame-retardant fabrics we imagine do not burn in everyone's impression. In fact, it is not. Flame-retardant fabrics do not catch fire, but they are not easy to be ignited. The burning rate is slow or it goes out immediately after leaving the flame. There are many corresponding flame retardant standards in the world, such as: EN470-1, EN531, EN532, NFPA2112, NFPA70E, etc.

Flame retardant fabrics are divided into fiber flame retardant and post-finish flame retardant. Post-finish flame retardant is divided into one-time and durable flame retardant.

Fiber flame-retardant, also called permanent flame-retardant fabric, is the work done in the early stage of the entire fabric-making process. The flame-retardant fiber is mainly used to woven into grey cloth. The flame-retardant effect is permanent and can be maintained for more than 50 washing times. , Any good washing effect, especially the flame-retardant yarn used in polypropylene (polyacrylic, commonly known as acrylic), will curl and carbonize when exposed to fire, and will go out when the fire source leaves. Produces a second fire, it is usually used for clothing fabrics.

Disposable flame retardant fabrics are ordinary fabrics that are treated with flame retardants in the later dyeing and finishing. Its 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 less, such as Hotel curtains, etc.

Durable flame-retardant fabrics usually adopt the "proban" production process. The flame retardant used is a durable finishing flame retardant for cotton fiber and its blended fabric. Its main feature is the use of this After this kind of flame retardant is produced and finished, the fabric can have good flame retardant ability within 50 times of washing.

Flame-retardant cloth is not a cloth that people say that it does not catch fire. After a special process, it can prevent the spread of flame and automatically extinguish within a certain period of time. Therefore, the basis for judging the flame retardant properties of fabrics is usually based on the burning rate of fabrics. That is, the flame-retardant finished fabric is in contact with the flame for a certain period of time according to the prescribed method, and then the flame is removed, and the time for the fabric to continue to burn with flame and flameless combustion, and the degree of damage to the fabric, etc. are measured. The shorter the flame burning time and the flameless burning time, the lower the degree of damage, which means that the flame retardant performance of the fabric is better; on the contrary, the flame retardant performance of the fabric is poor.

There are currently two main types of flame retardant fabrics

① Finishing flame-retardant fabrics, such as pure cotton, polyester cotton, etc.; flame-retardant fabric finishing is mainly to perform surface treatment on the fabric during the textile finishing process, so that the fabric has flame-retardant properties, and the fabric is flame-retardant finishing The process is simple, the investment is small, the effect is effective, and it is suitable for developing new products.

②Intrinsically flame-retardant fabrics, such as aramid, acrylic cotton, DuPont Kevlar, Nomex, Australia PR97, etc.

There is not much difference in the initial flame-retardant properties of the three, but after washing, the flame-retardant properties of the disposable flame-retardant fabric disappear completely.