Synergistic effect of non-halogen flame retardant and its influence on thermo-gravimetric behavior of styrene-butadiene rubber

Non-halogen flame retarded styrenebutadiene rubber(SBR) was prepared by blending method with P-N type intumescent flame retardant(IFR) and inorganic flame retardant Al(OH) 3/P as flame retardant components.The synergistic effect of the two types of flame retardant was studied and cone calorimeter testing,and the thermo-gravimetric behavior of flame retarded SBR was investigated.The results showed that when IFR and Al(OH) 3/P were used in SBR simultaneously,the limiting oxygen index of the composites reached 29% and the UL-94 was V-0 grade,and the heat release rate decreased significantly,exhibiting the synergistic effect of the two flame retardants.At air atmosphere,the two flame retardants could promote char forming together.