中文摘要：

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／Sb2O3）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％Sb2（）3复合材料的热释放速率峰值（PHRR）为374kW／m^2，与PP／22．5％DBDPE／7．5％Sb2O3复合材料（459kW／m^2）相比下降了19％。PP／11．25％OMMT-11．25％DBDPE／7．5％Sb2O3复合材料的火灾性能指数（FPI）为0.185s·m^2／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。

英文摘要：

PP/OMMT-DBDPE/Sb2O3 composite, based on the partial replacement of decabromodiphenyl e-thane （DBDPE） by organic montmorillonite （OMMT）, was prepared by melt blending method. Scanning electron microscope （SEM）, thermogravimetric analysis （TGA） and cone calorimeter were used to characterize the structure features, thermal stability and flame retardancy of the composites. The results showed that the onset temperature and decomposition temperature of PP/11.25 %OMMT-11.25 %DBDPE/7.5 % Sb2O3 composite increased by 8℃ and 13℃ respectively compared to PP/22. 5% DBDPE/7. 5% Sb2O3 composite. The amount of nonvolatile residue of PP/ 11.25%OMMT-11.25%DBDPE/7. 5%Sb2O3 composite at 600℃ was 13. 71%,3. 96% higher than that of PP/ 22. 5%DBDPE/7. 5%Sb2O3 composite. The peak heat release rate （PHRR） of PP/11.25%OMMT-11.25%DBDPE/ 7. 5%Sb2O3 composite was 374 kW/m^2 ,19% lower than that of PP/22. 5%DBDPE/7. 5%Sb2O3 composite. The fire performance index （FPI） of PP/11. 25%OMMT-11.25%DBDPE/7. 5%Sb2O3 composite was 0. 185 s·m^2/kW, 36% higher than that of PP/22. 5%DBDPE/7. 5%Sb2O3 composite. The thermal stability and flame retardancy of the PP composites are improved sharply because of the partial replacement of DBDPE by OMMT.