Effect of MPOP/TPP/PER Composite Flame-retardant on Burning Behavior of PP
Polypropylene/melamine polyphosphate/triphenyl phosphate (PP/MPOP/TPP) composites and PP/MPOP/TPP/pentaerythritol (PER) composites were prepared by the method of melt-blending.The effect of mass ratio of different flame-retardant components on the burning behavior of PP was also studied.The results show that,when the content of flame retardant is fixed at 30％ of pure PP,and the mass ratio of MPOP and TPP is 20/10,the thermal stability of the composites decreases,while its flame-retardant property increases.Adding PER to the above system,when the total content of FR,in which the mass ratio of MPOP and TPP is 20/10,and PER is 22.5/7.5,the thermal stability of the materials decreases,but the effect of coal-forming increases,the limited oxygen index (LOI) reaches to 22.6％,increased by 26.97％ than that of pure PP,the rate of heat release,the total heat release,the effective heat of combustion and the productivity of harmful gas all decrease obviously.The flame-retardant property of PP/MPOP/TPP/PER composites improves obviously.
国家科技期刊平台
NSTL
万方数据
维普
