Study on Piperazine-Modified Ammonium Polyphosphate Flame Retardant Polypropylene
Piperazine-modified ammonium polyphosphate(PAPP)was prepared.The flame retardant modification of polypropylene(PP)was carried out using ammonium polyphosphate(APP)and PAPP.The results show that the flame retardant effect of PAPP is better than that of APP.APP and PAPP have little effect on the initial degradation temperature of PP,and PAPP can increase the maximum degradation temperature of PP,but APP has little effect on it.The tensile strength of PAPP flame retardant PP is greater than that of APP flame retardant PP when the amount of flame retardant is the same.
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