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采用微波晶化低饱和态共沉淀法快速制备了层板上含有稀土铈元素的水滑石(LDHs),并将其应用于聚丙烯(PP)中通过熔融插层法制备了LDHs/PP复合材料。利用红外光谱、X射线衍射和透射电镜对LDHs进行了表征,并研究了LDHs/PP复合材料的阻燃性能和热降解性能。结果表明:当n(Zn2+)/n(Al3+)=3,n(Ce3+)/n(Al3+)=1/2时,所形成的Zn-Al-Ce-LDHs形貌最好,晶体结构最为规整;复合材料的阻燃性能随着Zn-Al-Ce-LDHs用量的增加而提高;当用量同为50%时,Zn-Al-Ce-LDHs/PP复合材料的氧指数达到28%,790℃下的残炭量为33.6%远,高于Mg-Al-LDHs/PP复合材料。
Hydrotalcite (LDHs) containing cerium as a rare earth element were prepared rapidly by microwave crystallization and low-saturated coprecipitation, and LDHs / PP composites were prepared by melt intercalation in polypropylene (PP) . The LDHs were characterized by FTIR, X-ray diffraction and transmission electron microscopy. The flame retardancy and thermal degradation of LDHs / PP composites were also studied. The results show that the morphology of Zn-Al-Ce-LDHs is the best and the crystal structure is the most regular when n (Zn2 +) / n (Al3 +) = 3 and n (Ce3 +) / n The flame retardancy of the composites increased with the increasing of the amount of Zn-Al-Ce-LDHs. The oxygen index of Zn-Al-Ce-LDHs / PP composites reached 28% Under the carbon residue is 33.6%, higher than the Mg-Al-LDHs / PP composites.