HDPE基木塑复合材料的性能研究  

Study on Mechanical Properties of HDPE/Wood Flour Composites

作　　者：曹明浪 曹金星[1] 张玲[1] 张云灿[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《现代塑料加工应用》2015年第6期21-24,共4页Modern Plastics Processing and Applications

基　　金：江苏省高校优势学科建设工程项目(PAPD)资助

摘　　要：研究了马来酸酐接枝高密度聚乙烯(HDPE-g-MAH)、马来酸酐接枝聚丙烯(PP-g-MAH)、马来酸酐接枝聚醋酸乙烯酯(EVA-g-MAH)、马来酸酐接枝乙烯辛烯共聚物(POE-g-MAH)和木粉的含量对HDPE/木粉复合材料力学性能的影响。结果表明:马来酸酐接枝物的加入可以明显改善木粉与HDPE之间的界面黏结性,提高木塑复合材料的力学性能,HDPE-gMAH的改性效果最为明显;其中POE-g-MAH除了具有明显的增加界面结合力的作用外,对HDPE基体还具有明显的增韧作用。当HDPE-g-MAH质量分数为15%、木粉质量分数为60%时,木塑复合材料的拉伸强度、弯曲强度及弯曲模量分别达到37.3,41.5,2 485 MPa。The effects of four different maleic anhydride grafted polymers （HDPE-g- MHA,PP-g-MAH,EVA-g-MAH,POE-g-MAH）and the wood flour contents on mechanical properties of the HDPE/wood flour composites were investigated. The results show that the addition of maleic anhydride grafted polymers can improve the interracial adhesion be- tween the wood flour and HDPE and produce different increasements of mechanical properties of composites. The modification effect of HDPE-g-MAH is most obvious. Not only can POE-g-MAH increase the interracial adhesion, but also improve the toughness of HDPE matrix. When the content of HDPE-g-MAH is 15% and the wood flour content is 60% , the tensile strength, flexural strength and flexural modulus of the composite reach 37.3 ,41.5 and 2485 MPa, respectively.

关 键 词：木塑复合材料 马来酸酐接枝物 相容剂 木粉含量 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]