What are the characteristics that flame retardants must possess?

Flame retardants are highly utilized in many industries, and substances that can be used as flame retardants must have flame retardancy and other basic characteristics. This mainly includes:

　　 1. The flame retardant is applied to the polymer without affecting its performance. For example, under the action of flame retardants, the physical and mechanical properties of plastics will remain unchanged.

　　 2. The decomposition temperature of the flame retardant should be coordinated with the thermal decomposition temperature of the polymer, so that the flame retardant function can be idealized. That is, the flame retardant will not be decomposed during the application of plastic processing, otherwise the generated gases and substances will interfere with the performance of the plastic.

　　 3. Lasting, stable and reliable, even after a long time, the role of flame retardant will not disappear, such as the flame retardant on the fire door is best to be used for a long time.

　　 4. The cost price is not high, because the use of flame retardants is very frequent, the price is high and the investment is high, which is unrealistic for many industries.

　　 In addition, there are other special requirements for flame retardants according to different use conditions. This will be treated in specific situations.