mPE-g-MAH对HDPE/木粉复合材料的改性

采用废木粉填充高密度聚乙烯（HDPE）制备木塑复合材料。采用马来酸酐接枝茂金属聚乙烯（mPE—g-MAH）对复合材料进行增容和增韧，并阐述了它的增容和增韧机理。讨论了mPE—g—MAH用量对复合材料的力学性能如拉伸强度、冲击强度、弯曲强度、弯曲模量的影响。结果表明，mPE—g—MAH不仅可明显提高复合材料的强度和韧性，而且也使材料的弯曲模量有了一定的提高。当其质量分数为16％时，复合材料的拉伸强度、冲击强度分别由原来的16．2MPa和4．5kJ／m^2提高到30．5MPa和9．8kJ／m^2。

Modification of Wood Flour/HDPE Composites by mPE-g-MAH

Wood-plastic composites were prepared from waste wood flour and high density polyethylene. The composites were compatibilized and toughened by mPE-g-MAH. The toughening and compatibilizing mechanism of mPE-g-MAH was discussed. The effects of mPE-g-MAH content on the mechanical properties of the composites such as tensile strength, impact strength, flexural strength and modulus were discussed in detail. The results show that mPE-g-MAH can not only increase the tensile strength and impact strength of the composites considerably, but also lead to an improvement of flexural property to a certain content. When 16% mPE-g-MAH is added, the tensile strength and impact strength of the composites are increased from 16.2 MPa and 4. 5 kJ/m^2 to 30. 5 MPa and 9.8 kJ/m^2 respectively.