The intention of flame retardants is to make non-flame retardant materials have flame retardant functions, which are not easy to burn under certain conditions and may be self-extinguishing.

　　The ways of flame retardant are nothing more than the following:

　　1. The flame retardant carbonizes the burnable material, and then reaches the flame retardant effect. This flame-retardant effect mainly plays a role in the solid phase. The flame-retardant materials of this type are mainly phosphorus flame retardants (including organic phosphorus and inorganic phosphorus).

　　2. The flame retardant constitutes a non-evaporation barrier under incineration conditions, blocking the air from reaching the flame retardant intention. This flame retardant effect mainly plays a role in the liquid phase. This type of flame retardant materials mainly include borate, halide, antimony oxide and phosphorus materials. Perhaps these materials reflect each other's generated substances.

　　3. Flame retardant differentiation products block the chain reaction of hydroxyl radicals and reach the flame retardant intention. This flame retardant effect mainly plays a role in the gas phase. This type of data mainly plays a role in the gas phase. Such flame retardant materials are mainly halides and antimony oxide.