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Cone calorimeter test, the test environment and the actual fire is very similar , there is a very good correlation between test results and physical burning test results , and evaluation of smoke , CO, CO2 , easy to operate , widely used material The burning performance evaluation . The KD the intumescent flame ( KDIFR ) and KDB the intumescent flame ( KDBIFR ) good water resistance intumescent flame retardant In this paper, both as the main flame retardant intumescent flame retardant PP performance , smoke evaluation and flame retardant mechanism . Mainly done the following work : 1 , KDIFR be used alone as a flame retardant , heat release rate of the PP slow down , CO , CO2 and reduced smoke emission , but the total heat release increases, the flame-retardant effect is not obvious . KDBIFR be used alone as a flame retardant , heat release rate of the PP has slowed down significantly , the total heat release and CO2 emission reduction , CO and the total amount of smoke emission increases , better flame-retardant effect . Ammonium polyphosphate ( APP ) used alone as a flame retardant , the PP heat release rate , total heat release and a slight decrease in C02 emission , elevated CO emission and the total amount of smoke , flame-retardant effect is not obvious . The KDIFR , or KDBIFR APP composite applied to the PP in the heat release rate decreased by 60 % and 69% , 29.1% and 45.5 % reduction in total heat release , smoke production fell 90 % and 20% , does not drip , expansion flame-retardant effect is significantly improved. 2 , the intumescent flame retardant polypropylene reasonably added bromine element , enables the heat release rate , total heat release is significantly reduced CO2 emission is slightly reduced , the flame-retardant effect is significantly improved ; but high CO and total smoke release life-saving for the fire is extremely unfavorable. Brominated flame retardants and the right amount of KDIFR and has good flame-retardant effect , but excessive KDIFR makes the initial stage of combustion heat release rate and total heat release of CO , CO2 and smoke release increased significantly , so that the flame-retardant effect weakened rapidly . 3 , the use of molecular sieves ( MS ) as the synergist KDIFR complex , the level of combustion method and Cone test results show that the synergies between the MS and KDIFR 2% MS to make KDIFR / PP system heat release rate , total heat release , C02 emission has been a significant decline in CO emission is slightly reduced , but the total smoke emission increases , the flame-retardant effect is better . MS accession shall amount, the excess will be counterproductive .
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