Fiber reinforcement leads to an improvement in mechanical properties of composites. In particular, long fiber thermoplastics (LFT) show more remarkable enhancement in the properties than short fiber thermoplastics (SFT). In this study, different fiber lengths, fiber loadings, and processing methods were considered to understand their effects on the physical properties more in-depth. It was found that significant breakage of fibers occurred during the screw based injection molding, which yielded a significant reduction in the properties. The orientation of fiber was observed experimentally and compared with the result of numerical simulation.

中文翻译：

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注射成型长纤维增强聚丙烯的制备与分析

纤维增强导致复合材料机械性能的改善。特别是，长纤维热塑性塑料（LFT）的性能比短纤维热塑性塑料（SFT）更加显着。在这项研究中，考虑了不同的纤维长度，纤维负载和加工方法，以更深入地了解它们对物理性能的影响。发现在基于螺杆的注射成型过程中发生了明显的纤维断裂，这导致了性能的显着降低。通过实验观察纤维的取向并将其与数值模拟的结果进行比较。