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用有机蒙脱石(OMMT)部分取代十溴二苯乙烷(DBDPE)制备聚丙烯/有机蒙脱石-十溴二苯乙烷/三氧化二锑(PP/OMMT-DBDPE/Sb2 O3)复合材料,采用SEM、TGA和锥形量热仪对复合材料的结构、热稳定性和阻燃性进行表征.结果表明,对于组成为PP/22.5%DBDPE/7.5%Sb2O3的复合材料,当用50%有机蒙脱石取代十溴二苯乙烷后,复合材料的初始分解温度和热分解温度分别提高了8℃、13℃,600℃的残留量达到13.71%,提高了3.96%.PP/11.25%OMMT-11.25%DBDPE/7.5%Sb2O3复合材料的热释放速率峰值(PHRR)为374 kW/m2,与PP/22.5%DBDPE/7.5% Sb2O3复合材料(459 kW/m2)相比下降了19%.PP/11.25% OMMT-11.25% DBDPE/7.5%Sb2O复合材料的火灾性能指数(FPI)为0.185 s·m2/kW,相比PP/22.5%DBDPE/7.5%Sb2O3复合材料提高了36%.有机蒙脱石部分取代十溴二苯乙烷后聚丙烯复合材料的热稳定性及阻燃性能都明显改善.

参考文献

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