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Properties of flax-polypropylene composites made through hybrid yarn and film stacking methods

机译:混杂纱线和薄膜堆叠方法制得的亚麻-聚丙烯复合材料的性能

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摘要

In the present study, two distinguishable unidirectional composite structures have been produced using compression molding technique. Among these two, one is made through conventional film stacking (FSC) method while the other structure is made after consolidating the DREF spun hybrid yarns (DYC). In both cases, low twisted, MAgPP treated flax yarns are used as reinforcement and polypropylene (PP) is used as matrix. Effects of fibre content on both composite structures are studied at 40%, 50% and 60% flax contents respectively. It has been observed that irrespective of composite structure, the tensile and flexural properties of the composite samples increase with increasing flax content but the impact strength decreases with increasing flax content. However, at constant fibre volume fraction, the DYC composites demonstrate better properties than the FSC composites. This is mainly due to better fibre-matrix distribution and lower void content of the DYC composites than the FSC composites.
机译:在本研究中,已经使用压缩成型技术生产了两个可区分的单向复合结构。在这两种中,一种是通过常规的薄膜堆叠(FSC)方法制成的,而另一种是在将DREF纺丝混杂纱线(DYC)固结后制成的。在这两种情况下,均采用低捻,经MAgPP处理的亚麻纱作为增强材料,而聚丙烯(PP)作为基质。在亚麻含量分别为40%,50%和60%的情况下研究了纤维含量对两种复合结构的影响。已经观察到,与复合材料结构无关,复合样品的拉伸和挠曲性能随着亚麻含量的增加而增加,但是冲击强度随着亚麻含量的增加而降低。但是,在恒定的纤维体积分数下,DYC复合材料的性能优于FSC复合材料。这主要是由于DYC复合材料比FSC复合材料具有更好的纤维基质分布和较低的空隙率。

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