In the present work, the influence of interface and hybrid yarn structure on flax-PP based unidirectional composite properties have been studied thoroughly. Flax-PP based core-sheath structured DREF spun hybrid yarns are manufactured after varying the core yarn twist and sheath percentage at three different levels and using MAgPP treated and untreated flax yarn as core. These hybrid yarns are consolidated to manufacture unidirectional composite samples and the resultant composites are tested accordingly. It is observed that MAgPP treatment of the core flax yarn improves the tensile and flexural properties of the hybrid yarn reinforced unidirectional composites while impact strength decreases after the treatment. A negative impact on the tensile and flexural properties of the unidirectional composite samples is observed with increasing core twist and sheath content of the reinforcing hybrid yarn. The impact strength of the composite samples increases for similar changes in hybrid yarn parameters.

在目前的工作中，已经深入研究了界面和混合纱线结构对基于亚麻-PP的单向复合材料性能的影响。亚麻-PP基纤芯鞘结构的DREF纺混纺纱线是在三种不同水平下改变纤芯纱的捻度和鞘层百分率，并使用经过MAgPP处理和未处理的亚麻纱作为纤芯后生产的。将这些混合纱线进行固结，以制造单向复合材料样品，并对所得复合材料进行相应的测试。观察到，对芯亚麻纱线进行MAgPP处理可改善混合纱线增强单向复合材料的拉伸和挠曲性能，而在处理后冲击强度会降低。随着增强混纺纱芯捻度和皮含量的增加，观察到了对单向复合材料样品的拉伸和挠曲性能的负面影响。复合纱线参数的类似变化会增加复合材料样品的冲击强度。