三种方法制备HDPE/LDHs复合材料的性能比较  

A Comparison of Three Methods for Preparing HDPE/LDHs Nanocomposites

作　　者：曹阳[1] 秦军[2,3] 谢普[4] 程丽萍[4] 田瑶珠[4] 

机构地区：[1]贵州大学化学与化工学院 [2]喀斯特环境与地质灾害防治教育部重点实验室(贵州大学),贵州贵阳550003 [3]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [4]贵州大学材料与冶金学院,贵州贵阳550003

出　　处：《高分子材料科学与工程》2012年第10期63-66,71,共5页Polymer Materials Science & Engineering

基　　金：国家"十一五"科技支撑计划课题(2007BAB08B05)

摘　　要：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.

关 键 词：乙烯丙烯酸无规共聚物 水滑石 高密度聚乙烯 复合材料 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]