FPP对Al(OH)3/PP复合材料的流动性、阻燃性和结晶行为的影响

用熔融挤出法制备了不同接枝率的官能团化聚丙烯（FPP），研究了FPP对Al(OH)3/PP复合材料的流动性、阻燃性和结晶与熔融行为等物性的影响。FPP加入使Al(OH)3/PP的熔融指数增加，流动性与填料分散性改善，氧指数提高和结晶与熔融行为改变。探讨FPP在Al(OH)3/PP复全材料中的作用机理。

EFFECT OF PP-g-AA ON MELT FLOW INDEX, LIMITING OXYGEN INDEX AND CRYSTALLIZATION BEHAVIOR OF Al(OH)3/POLYPROPYLENE COMPOSITES

Effect of PP g AA on melt flow index, limiting oxygen index ( LOI ) and crystallization and melting behavior of Al(OH) 3/PP composites have been investigated. The results indicate that the melt flowing index of Al(OH) 3/PP composites decreases with increasing the Al(OH) 3 content. Addition of FPP results in an increase in the melt now index of Al(OH) 3/PP composites. However, the melt flow index of Al(OH) 3/FPP/PP decreases with increasing the grafting rate of FPP. It is attributed to the presence of an interfacial interaction between FPP and Al(OH) 3. With adding Al(OH) 3 and increasing the content of Al(OH) 3, LOI values of composites increase and further improve by adding FPP. Crystallization temperature of PP shifts to high temperature with increasing the content of Al(OH) 3 due to the interfacial nucleation of Al(OH) 3 and further increases by addition of FPP and with increasing the FPP content due to the improvement of the dispersion of Al(OH) 3 in PP matrix.