With the wide application of polymers, more stringent requirements for polymer properties, such as flame-retardant, strength and processability, have been put forward in practical applications. Adding appropriate modifiers, such as dicumene, can improve the performance of the polymer. So, how does the dicumene play a role in the polymer?
As far as the current application is concerned, in fact, it has already become a very common additive. It is mainly used as synergistic synergist of polymer fire retardant and flame retardant. Crosslinking and graft copolymerization of catalysts can improve the mechanical properties of polymers through crosslinking or graft copolymerization.
The reason for this performance is mainly due to the particularity of the structure of dicumene itself. In the case of heat or light, the product is easy to split and form a certain free radical. The free radical is more stable because of the resonance of the benzene ring and the hyper choke effect of the methyl.
In fact, the modification of dicumene to the polymer is achieved through the free radical. It is found that when the temperature rises, the half-life of dicumene becomes shorter. The temperature of its decomposition is high. And at 230 degrees, the half-life will reach thirty minutes.
Usually used at 200 degree temperature, dicumene is mainly used for polymer crosslinking or grafting reaction at higher temperature. The application and application effect are also different. At the same time, compared to general free radical initiators such as diazo, peroxide and azo compounds, dicumene is more stable and safer in use.