中国塑料 ›› 2009, Vol. 23 ›› Issue (08): 69-74 .DOI: 10.19491/j.issn.1001-9278.2009.08.015

• 加工与应用 • 上一篇    下一篇

聚乙烯基木塑复合材料吸水率的研究

李珊珊 吕群 李伟 来国桥 羊海棠   

  1. 杭州师范大学材料与化学化工学院 杭州师范大学 杭州师范大学
  • 收稿日期:2009-03-13 修回日期:2009-06-01 出版日期:2009-08-26 发布日期:2009-08-26

Studies on Water Absorption of Wood Flour-Filled Polyethylene composites

LI Shan-shan;LV Qun;LI Wei;LAI Guo-qiao;YANG Hai-tang   

  • Received:2009-03-13 Revised:2009-06-01 Online:2009-08-26 Published:2009-08-26

摘要: 将配方中部分至全部的聚乙烯(PE)进行接枝改性,然后与木粉和少量润滑剂混合,用挤出成型法制备了木塑复合材料,研究了改性PE和木粉含量对木塑复合材料吸水率的影响。结果表明,配方中改性PE和未改性PE比例一定时,随着木粉含量降低,木塑复合材料的吸水率降低;在木粉含量较高时保持改性PE和未改性PE总含量不变,则随着改性PE替代未改性PE的量增加,木塑复合材料的吸水率降低,当改性PE完全替代未改性PE时,木塑复合材料的吸水率降至5.5 %;木塑复合材料的吸水率越低,其吸水后强度的变化越小。

关键词: 聚乙烯, 木塑复合材料, 吸水率, 力学性能

Abstract:

MAH-g-polyethylene (PE)/neat PE/ wood-flour composites were prepared by extrusion. The influence of the content of MAH-g-PE and wood-flour on the water absorption of the composite was studied. Kept the weight ratio of MAH-g- PE/neat PE constant, the water absorption decreased with decreasing wood-flour content. At high wood-flour loading, the higher the content of MAH-g-PE, the lower the water absorption. The lower the water absorption, the higher the wet mechanical properties.

Key words: polyethylene, wood-plastic composites, water absorption, mechanical properties