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以废旧高密度聚乙烯为塑料基体,木粉为填料,采用双螺杆挤出成型工艺制备高性能木塑复合材料。研究了自制的木粉疏水改性剂(CPN)、界面相容剂(MAPE)等对木塑复合材料力学性能的影响,并用扫描电镜对材料的断面结构进行了观察。结果表明:CPN和MAPE能显著改善界面相容性,提高木塑复合材料的力学性能,从而制备出弯曲强度达30MPa的高性能PE基木塑复合材料。
Using waste high-density polyethylene as the plastic matrix and wood flour as the filler, a high-performance wood-plastic composite material is prepared by a twin-screw extrusion molding process. The effect of self-made wood flour hydrophobic modifier (CPN) and interfacial compatibilizer (MAPE) on the mechanical properties of WPC composites was investigated. The cross-sectional structure of the composites was also observed by scanning electron microscopy. The results show that CPN and MAPE can significantly improve the interfacial compatibility and improve the mechanical properties of WPC, so as to prepare high performance PE-based WPC with flexural strength of 30MPa.