To investigate the mechanical properties of fused deposition modeling (FDM) parts, a compatibilizer and nanoparticles were used as additions in Polycarbonate and Acrylonitrile‐Butadiene‐Styrene (PC/ABS) blends, and four PC/ABS composites were used to fabricate the FDM samples in this study. Two simplified deposition modes of the FDM process were proposed and used to investigate the bonding effect and deposition effect. The bonding effects of the four materials were first investigated using model I of the FDM process. Then, a linear relationship between the bonding strength and the porosity was found, and the optimal processing conditions that produced the best bonding strength were determined. These optimal processing conditions were then used in mode II of the FDM process to fabricate four samples. The mechanical properties and structural characterizations of these samples were studied using tensile tests, dynamic mechanical analysis (DMA), and scanning electron microscopy (SEM). One interesting phenomenon observed from the tensile tests was that the necking of the PC/ABS FDM sample can spread throughout the total gauge length and measure more than 100% of the strain when the compatibilizer and the nanoparticles were added, which can be attributed to a balance between bonding properties and ductility. The results verify the applicability of PC/ABC composites to FDM technology and suggest that compatibilizers and nanoparticles are suitable candidates to improve the bonding strength and the deposition effect of PC/ABS FDM parts. In conclusion, the balance between bonding properties and ductility is key to improving the tensile behaviors of PC/ABS FDM parts by adjusting the compatibility and porosity of blended PC/ABS samples.

中文翻译：

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聚碳酸酯和丙烯腈-丁二烯-苯乙烯复合材料的熔融沉积建模过程中的结合与沉积之间的平衡

为了研究熔融沉积建模（FDM）零件的机械性能，在聚碳酸酯和丙烯腈-丁二烯-苯乙烯（PC / ABS）共混物中添加了相容剂和纳米颗粒，并使用了四种PC / ABS复合材料制造了FDM样品在这个研究中。提出了FDM工艺的两种简化沉积模式，并用于研究键合效应和沉积效应。首先使用FDM工艺的模型I研究了四种材料的粘合效果。然后，发现结合强度与孔隙率之间呈线性关系，并确定产生最佳结合强度的最佳加工条件。然后，将这些最佳加工条件用于FDM工艺的模式II，以制造四个样品。使用拉伸试验，动态力学分析（DMA）和扫描电子显微镜（SEM）研究了这些样品的机械性能和结构特征。从拉伸测试中观察到的一个有趣现象是PC / ABS FDM样品的颈缩可以扩展到整个标距长度，并且当添加相容剂和纳米颗粒时，可以测量超过100％的应变，这可以归因于粘结性能和延展性之间的平衡。结果证实了PC / ABC复合材料对FDM技术的适用性，并建议增容剂和纳米颗粒是提高PC / ABS FDM零件的结合强度和沉积效果的合适候选材料。综上所述，