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3D printing of continuous fiber reinforced diamond cellular structural composites and tensile properties

机译：3D印刷连续纤维增强金刚石蜂窝结构复合材料和拉伸性能

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摘要

A new strategy is proposed for preparation of continuous fibre reinforced cellular structural composites (CFRCSCs) based on a fused filament fabrication. This method can endow some continuous fibers in cellular structure with good orientations by well design of fiber printing path and reconfiguration of extrusion, and can distribute fibers evenly and interleave fibers uniformly in the structure. The printed cellular structure is able to display predictable and reasonable tensile properties. In this work, the influences of printing paths, factors and structure parameters on the tensile properties of diamond shape of CFRCSCs were investigated, with which of the results to optimize the printing path and scheme for CFRCSCs. The results showed that the structural parameters like cell length affected the tensile properties greatly by variation of fiber orientations along the stretching direction. The printing parameters such as the thickness of each printed layer had a significant impact on the fiber content of CFRCSCs. An increase of the fiber content gave rise to a higher tensile property of CFRCSCs. This printing strategy provides significant references for preparation and application of highperformance composites with more complex while lightweight 3D structures.
机译：提出了一种基于熔融丝制造的连续纤维增强蜂窝结构复合材料（CFRCSCS）的新策略。通过孔印刷路径和重新配置的纤维印刷路径和挤出的良好设计，该方法可以以良好的取向赋予细胞结构中的一些连续纤维，并且可以在结构中均匀地分配纤维和交错纤维。印刷的蜂窝结构能够显示可预测和合理的拉伸性能。在这项工作中，研究了印刷路径，因子和结构参数对CFRCSCs的金刚曲张形状的拉伸性能的影响，结果优化CFRCSC的印刷路径和方案。结果表明，通过沿拉伸方向的纤维取向变化，细胞长度等结构参数大大影响了拉伸性质。诸如每个印刷层的厚度的印刷参数对CFRCSCs的纤维含量产生显着影响。纤维含量的增加产生了CFRCSCs的更高的拉伸性能。这种打印策略提供了显着的参考，用于制备和应用高性能复合材料，同时轻量级3D结构。

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