植物纤维/聚丙烯复合材料增韧性研究

On toughening of natural fiber/polypropylene composites

针对植物纤维 /聚丙烯复合材料脆性大的问题 ,选用三元乙丙橡胶 (EPDM)及乙烯 辛烯共聚物 (POE)对复合材料进行增韧研究。结果表明 ,该复合体系中 ,当植物纤维含量较低时 ,植物纤维在基体中分布均匀 ,且EPDM及POE质量分数均为 2 5 %左右时增韧效果较好 ,且POE的增韧效果优于EPDM ;当植物纤维含量较高时 ,会出现团聚现象。而加入相容剂马来酸酐接枝聚丙烯共聚物 (MAPP)

Because of the problem of great brittleness of natural fiber/polypropylene composites, EPDM(ethylene-propylene-dieneterpolymer) or POE(ethylene-1-octene copolymer) was chosen to modify the toughness properties of the composites. In this system, when the content of the natural fiber is low, it can be distributed homogeneously. Then modification of toughness properties is better when the contents of EPDM and POE are both 25%, and POE is better than EPDM. When the content of the natural fiber is high, it may reunite. Besides, MAPP(maleic anhydride grafted polypropylene) will also improve the toughness of the composites.