Melt crystallization kinetics of polypropylene (PP) in the blends of fire-retardant PP (FRPP) has been studied by JJY-1 Crystallization Rate Equipment. Conclusions about effect of fire-retardant additives on the crystallization behavior of PP in FRPP system have been drawn
fire-retardant additive APP and TBE can act as nucleating agents for PP crystallization
but when APP contents exceed 20%
it acts as a barrier to the PP crystallization growth.In the presence of fire-retardant additive PER
the PP chain-folded surface free en-ergy is increased
resulting in a decrease of PP crystallization nucleating and growth rete.However
fire-retardant additive TPP has no efficient effect onPP crystallization be-havior.