Flame Retardant For ABS

Flame retardants can be divided into halogenated flame retardants and halogen-free flame retardants according to their composition. Due to environmental protection and personal safety considerations, the application of halogenated flame retardants in many fields has been restricted, and relevant prohibition regulations have been issued, such as the famous RoHS, REACH, and other regulations.

However, when it comes to ABS, everyone knows that the limiting oxygen index (LOl) of ABS is only 18.3-20.0. It is a flammable polymer material with a fast horizontal burning speed of about 25-51mm/min.

However, because the ABS polymer chain does not contain oxygen elements and other factors, there are many problems with its halogen-free flame retardancy, which makes it difficult to apply on a large scale. At present, industrial production is halogenated flame retardant ABS.

Halogenated flame retardants mainly include brominated and chlorinated flame retardants, and are currently one of the most produced organic flame retardants in the world. Among them, brominated flame retardants have high flame retardant efficiency and moderate price. The decomposition temperature of most brominated flame retardants is 200-300°C, which matches the decomposition temperature range of general polymer materials and can efficiently capture free radicals generated by material decomposition, so they are more popular.

The brominated flame retardants can be divided into additive type, reactive type, and high polymer type, with a total of more than 70 types. Among them, the use of additive type flame retardants in ABS is the most common. The main varieties are: TBBA, DBDPE, BER, FR245.