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首页> 美国卫生研究院文献>Materials >Anisotropic Properties of Polylactic acid–carbon Fiber Composites Prepared by Droplet spray Additive Manufacturing
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Anisotropic Properties of Polylactic acid–carbon Fiber Composites Prepared by Droplet spray Additive Manufacturing

机译：液滴喷涂增材制造聚乳酸-碳纤维复合材料的各向异性

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摘要

Anisotropic materials are important functional materials in many fields. The use of these materials is currently being expanded through the rapid development of additive manufacturing. However, there is still no universal method for fabricating two-dimensional anisotropic polymer composites. Here, polylactic acid–carbon fiber composites were prepared using the droplet spray method, and their mechanical and friction properties were studied. The tensile strength in the X–Y plane perpendicular to the direction of the droplet spray was significantly higher than that in the direction of droplet ejection. Similar trends were observed for the elongation at breaking and the impact strength. The friction coefficient was smallest in the X–Y plane. Scanning electron microscopy showed that carbon fibers were oriented in the X–Y plane, which enhanced the mechanical and friction properties in this plane.
机译：各向异性材料是许多领域中重要的功能材料。目前，随着增材制造技术的快速发展，这些材料的使用正在不断扩大。然而，仍然没有通用的方法来制造二维各向异性聚合物复合材料。在这里，采用液滴喷射法制备了聚乳酸-碳纤维复合材料，并研究了它们的机械和摩擦性能。在垂直于液滴喷射方向的X-Y平面上的拉伸强度明显高于在液滴喷射方向上的拉伸强度。对于断裂伸长率和冲击强度观察到相似的趋势。摩擦系数在X-Y平面上最小。扫描电子显微镜显示，碳纤维在X-Y平面上取向，从而增强了该平面的机械和摩擦性能。

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