中文摘要：

通过引入马来酸酐接枝乙烯与辛烯共聚物（MA-POE）提高了木粉／聚丙烯（WF／PP）复合材料的韧性，并通过萄弹性模量分析探讨了MA-POE对WF／PP复合材料低温力学性能的影响。研究结果表明，加入MA—POE后复合皋于料冲击强度在-20℃和20℃条件下比未添加MA—POE的空白样分别提高了60％和68％；在常温下弯曲强度从41．70MPa升高到50．86MPa，提高了22％；MA．POE能够有效地降低WF／PP复合材料的弹性模量、储能模量和损耗模量，使三者都向低温偏移；采用MA—POE先与PP熔融共混后再与木粉混合的工艺可以进一步提高复合材的强度。动弹性模量分析证明添加MA—POE能够改善WF／PP复合材料的低温韧性。通过扫描电子显微镜也进一步印证了两相结合得到了改善。

英文摘要：

MA-POE was introduced to wood flour/polypropylene （WF/PP） composites to improve its toughness. Dynamic mechanical analysis was used to detect the effect of MA-POE on the properties of WF/PP composite at low temperature. Results showed that, compared with the control samples, the impact strength of WF/PP composite samples containing MA-POE increased by 60 percent and 68 percent at -20 degrees C and 20 degrees C, respectively; the flexural strength at room temperature increased by 22 percent. The properties of WR/PP composites could be further improved if MA-POE compounded with PP first and then mixed with wood flour. The elastic modulus, storage modulus and loss modulus of the WF/PP composites decreased when added MA-POE, and all of them moved to lower temperatures. The measured loss factor indicated that the toughness of WF/PP composite at low temperature was improved by the introduction of MA-POE. Scanning electron microscope （SEM） showed that the composites containing MA-POE had a better interfacial compatibility than those without MA-POE.