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Talking about the flame retardant effect of Dicumene on polyethylene

Oct 03, 2018

The full name of the Dicumene is called 2,3-dimethyl-2,3-diphenylbutane. Due to its special structure, the C-C bond between the corresponding quaternary carbon atoms is not stable and easily dissociates to form free radicals. Thus, the dicumyl group and its derivative can be attributed to a radical initiator having an unstable C-C bond, and are mainly used as a flame retardant synergist and a cross-linking copolymerization catalyst.


It is more stable and safer to use than conventional free radical initiators used in the past. In fact, Dicumene as as a flame retardant synergist, on the one hand through the formation of free radicals to transfer the halogen chain transfer; on the other hand, when the external temperature rises, promote the formation of halogen radicals to achieve a flame retardant effect.


As the addition of the Dicumene with the gradual increase, its flame retardant performance is also continuously improved, when the amount of addition reaches 1.2 parts, at this time, it has good flame retardant properties. And taking into account the tensile properties and flame retardant properties, while taking into account the cost factor, it can be determined that the appropriate amount of DMDBP in the system is 1 to 2 parts. Dicumene has significant flame retardant synergistic effect. In LDPE/Sb2O3/DBDPO=100/5/3 system, adding 1 part of DMDBP can greatly improve the elongation at break and greatly improve the flame retardant performance. Up to 29.http://www.china-zhufengchem.com/