Despite the fact that PVC It is a halogenated polymer (with approximately 571 tsp by weight of chlorine) that, on its own, tends to extinguish fire by releasing HCl as a radical scavenger. Some additives included in its formulation often have the opposite effect. An example of additives that affect this property are plasticizers, as they reduce the limiting oxygen index (LOI). LOI. It is true that there are other additives designed to minimize this effect, and our technicians can certainly advise you on this.
Flame retardants for PVC are used to counteract this effect and are typically employed in flexible applications. They are used in the manufacture of electrical cables and other electrical applications to improve the escape time in the event of a fire.
These flame retardants for PVC They help formulators meet UL 94 flammability standards (categories V-0, V-1, V-2 for vertical testing and HB for horizontal testing) and the flame tests of the Mexican standard NMX-J-010-ANCE (equivalent to ANSI/UL 83) for electrical cable. Their dosage varies according to the required specifications.
