木纤维/聚丙烯复合材料界面相容性及增韧改性的研究

为了改善木纤维与聚丙烯之间的界面相容性，提高木塑复合材的刚度和韧性，该文利用马来酸酐接枝聚丙烯（PP-g-MAH）及马来酸酐接枝苯乙烯-乙烯-丁二烯苯乙烯嵌段共聚物（SEBS-g-MAH）对其进行增强和增韧改性.静态力学性能测试结果显示，分别添加适量的PP-g-MAH及SEBS-g-MAH后，复合材料的力学性能有了明显的提高.通过动态力学分析和扫描电子显微镜分析，证明了木纤维与聚丙烯之间的界面结合有了明显的改善，添加PP-g-MAH和SEBS-g-MAH增强了木纤维和聚丙烯基体之间的粘合性，使两相结合得更加紧密，进而提高了木塑复合材的力学性能. 

Interfacial compatibility and toughening modification of wood fiber_polypropylene composites

To improve the interfacial compatibility between wood fiber and polypropylene as well as the toughness of wood fiber-polypropylene composites,maleic anhydride grafted polypropylene(PP-g-MAH) and maleic anhydride grafted styrene-ethylene-butadiene-styrene copolymer(SEBS-g-MAH) were used as modifiers.The static mechanical property test showed that the mechanical properties of wood fiber-polypropylene composites to which PP-g-MAH or SEBS-g-MAH was added were improved.The composites added PP-g-MAH or SEBS-g-MAH had a better interfacial compatibility than the unmodified ones,and this was verified by scanning electron microscope(SEM) observation and dynamic mechanical analysis(DMA).The mechanical properties of the composites were significantly improved because of the good interfacial adhesion between wood fiber and polypropylene when PP-g-MAH and SEBS-g-MAH were added.