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采用熔融共混和模压成型方法将废剑麻纤维(SF)和玻璃纤维(GF)混杂增强聚丙烯(PP)制备SF/GF/PP木塑复合材料。研究复合材料力学性能、热性能、晶型结构和微观结构,探讨混杂纤维增强基体树脂的界面行为。结果表明:所制得复合材料的冲击强度、弯曲强度和弯曲模量都有不同程度的提高。同时,热稳定性、PP相的结晶速率及结晶度也有所提高,晶态结构无变化,仍是典型的α晶型。
The SF / GF / PP wood-plastic composites were prepared by melt-blending and compression-molding of waste sisal fiber (SF) and glass fiber (GF) The mechanical properties, thermal properties, crystal structure and microstructure of the composites were studied, and the interfacial behavior of hybrid fibers reinforced matrix resin was discussed. The results show that the impact strength, flexural strength and flexural modulus of the composites are all improved to some extent. At the same time, the thermal stability, the crystallization rate and the crystallinity of the PP phase are also improved, the crystalline structure is unchanged, is still a typical α crystal.