PE-g-MAH对木粉高填充量PE木塑性能的影响  

Effect of PE-g-MAH on Properties of High-content Wood-flour Filled PE Composites

作　　者：李伟[1] 吕群[1] 羊海棠[1] 何田[1] 来国桥[1,2] 

机构地区：[1]杭州师范大学材料与化学化工学院,浙江杭州310036 [2]杭州师范大学有机硅教育部重点实验室,浙江杭州310012

出　　处：《中国塑料》2008年第12期28-32,共5页China Plastics

基　　金：浙江省重大科技专项(优先主题)(2008C13G2150004);杭州市科技计划项目(20081533F04)

摘　　要：以回收高密度聚乙烯(PE-HD)和马来酸酐接枝聚乙烯(PE-g-MAH)的总含量为27%(质量分数,下同)、木粉含量为70%、润滑剂为3%为基本配方,用挤出成型法制备了木粉高填充量的木塑复合材料。研究了配方中PE-g-MAH的含量对木塑复合材料性能的影响,结果表明,在保持配方中PE-g-MAH和PE-HD的总含量为27%不变的条件下,随着PE-g-MAH的含量从0增加到27%,制得的木塑复合材料的拉伸强度从12.5MPa增大到34.7MPa,弯曲强度从30.0MPa增大到64.0MPa,冲击强度从3.9kJ/m2增大到14.1kJ/m2,吸水率从2.51%减少到0.04%。红外光谱表明,木塑复合材料中木粉与PE-g-MAH之间形成了酯键。High wood-flour-content filled PE composites were manufactured via extrusion, with a recipe of 70 wt% wood-flour, 27 wt% PE-HD plus polyethylene-graft-maleic anhydride （PE-g-MAH）, and 3 wt% lubricant. The mechanical properties and water absorption of the PE/wood-flour composites were investigated. The addition of PE-g-MAH increased the flexural strength, toughness, and tensile strength of the composites significantly, which were increased from 30.0 to 60.0 MPa, 3.94 to 14.1 kJ/m^2, and 12.5 to 34.7 MPa, respectively. Water absorption was decreased from 2.51 to 0.04 wt%. FTIR indicated that ester bonds were formed between wood-flour and PE-g-MAH.

关 键 词：马来酸酐接枝聚乙烯 回收高密度聚乙烯 挤出成型 木塑复合材料 性能 

分 类 号：TQ327[化学工程—合成树脂塑料工业]