分别采用硬脂酸表面改性、高密度聚乙烯接枝马来酸酐（HDPE-g-MA）熔融接枝水滑石（LDHs）、乙烯丙烯酸无规共聚物（EAA）熔融接枝水滑石与高密度聚乙烯共混挤出制备纳米复合材料。结果表明,采用EAA接枝水滑石较其他两种方法制备的HDPE/LDHs冲击性能可提高25%以上,拉伸强度可提高35%以上;差示扫描量热（DSC）和X射线衍射（WAXD）等方法证实,EAA熔融接枝LDHs提高了LDHs在HDPE中的分散,有利于HDPE结晶,晶粒细化。采用EAA熔融接枝LDHs填充HDPE可制备性能优异的聚烯烃纳米复合材料。
Layered double hydroxides modified by the ethylene-acrylic acid random copolymer(EAA),HDPE-g-maleic anhydride(MA) and stearic acid were blended with high-density polyethylene(HDPE) to prepare nanocomposite materials.The results show that the mechanical prosperities of the HDPE nanocomposites,prepared with layered double hydroxides modified by EAA were improved greatly,the Izod impact strength and the tensile strength increase by 25% and 35%,respectively.The process of the grafted layered double hydroxides and the structure of the nanocomposites were investigated by DSC and WAXD.The results show that the EAA modified LDHs can make the grain of HDPE smaller,the crystalline rate faster,and the half peak width of crystalline littler than the other two.The layered double hydroxides modified by EAA is appropriate to get nanocomposites with better mechanical prosperities.
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