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首页> 外文期刊>Journal of Forestry Research >Dynamic-mechanical analysis and SEM morphology of wood flour/polypropylene composites
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Dynamic-mechanical analysis and SEM morphology of wood flour/polypropylene composites

机译：木粉/聚丙烯复合材料的动态力学分析和SEM形态

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摘要

A study was conducted to investigate the effects of compatibilizers, including Maleic anhydride grafted polypropylene (MA-PP) and maleic anhydride grafted ethylene-propylene-diene copolymer (MA-EPDM), on wood-flour/polypropylene (WF/PP) composites. WF/PP composites were prepared by direct extrusion profiles using a twin-screw/single-screw extruder system. DMA analysis showed that the loss factor of composites decreased and the storage modulus improved in the presence of MA-PP, which indicated much better interfacial adhesion between the PP matrix and wood flour filler than in the absence of compatibilizer. Morphological feature based on SEM observation showed that MA-PP and MA-EPDM improved the dispersion of the wood particles in the plastic matrix. MA-EPDM is a soft segment, although it improved the interfacial adhesion, storage modulus decreases with adding of MA-EPDM. As compatibilizer of wood-flour/polypropylene composites, both DMA analysis and SEM feature proved that MA-PP was superior to MA-EPDM.
机译：进行了一项研究，以研究增容剂（包括马来酸酐接枝的聚丙烯（MA-PP）和马来酸酐接枝的乙烯-丙烯-二烯共聚物（MA-EPDM））对木粉/聚丙烯（WF / PP）复合材料的影响。 WF / PP复合材料是使用双螺杆/单螺杆挤出机系统通过直接挤出型材制备的。 DMA分析表明，在存在MA-PP的情况下，复合材料的损耗因子降低，储能模量提高，这表明PP基质与木粉填料之间的界面粘合性比不存在增容剂时更好。基于SEM观察的形态特征表明，MA-PP和MA-EPDM改善了木材颗粒在塑料基质中的分散性。 MA-EPDM是一个柔软的链段，尽管它改善了界面粘附性，但随着添加MA-EPDM，储能模量降低。作为木粉/聚丙烯复合材料的相容剂，DMA分析和SEM均证明MA-PP优于MA-EPDM。

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