Assessment of the mechanical properties of PC/ABS blends for functional prototyping by FFF 3D printing

IF 3.4 4区 工程技术 Q1 ENGINEERING, MECHANICAL
Cleiton Lazaro Fazolo De Assis, Cleber Augusto Rampazo
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Abstract

Purpose This paper aims to evaluate the mechanical behaviour of polycarbonate/acrylonitrile butadiene styrene (PC/ABS) filaments for fusion filament fabrication (FFF). PC/ABS have emerged as a promising material for FFF due to their excellent mechanical properties. However, the optimal processing conditions and the effect of the blending ratio on the mechanical properties of the resulting workpieces are still unclear. Design/methodology/approach A statistical factorial matrix was designed, including infill pattern, printing speed, nozzle size, layer height and printing temperature as factors (with three levels). A total of 810 workpieces were printed using PC/ABS blends filament with the FFF. The workpieces’ finishing and mass were evaluated. Tensile tests were performed. Analysis of variance was performed to determine the main effects of the processing conditions on the mechanical properties. Findings The results showed that the PC/ABS (70/30) exhibited higher tensile. Tensile rupture corresponded to 30% of the tensile strength. The infill pattern showed the highest contribution to the responses. The concentric pattern showed higher tensile strength. Tensile strength and mass ratio demonstrated the influence of mass on tensile strength. The influence of printing parameters on deformation depended on the blend proportions. Higher printing speed and lower layer height provided better quality workpieces. Originality/value This study has implications for the design and manufacturing of three-dimensional printed parts using PC/ABS filaments. An extensive experimental matrix was applied, aiming at a complete understanding of mechanical behavior, considering the main printing parameters and combinations not explored by literature.
FFF 3D打印功能原型PC/ABS共混物的力学性能评估
目的研究聚碳酸酯/丙烯腈-丁二烯-苯乙烯(PC/ABS)长丝的力学性能。PC/ABS由于其优异的力学性能而成为一种很有前途的FFF材料。然而,最佳的加工条件和混合比例对所得工件力学性能的影响尚不清楚。设计了一个统计因子矩阵,包括填充图案、打印速度、喷嘴尺寸、层高和打印温度作为因子(有三个层次)。使用PC/ABS共混长丝和FFF打印了810个工件。对工件的精加工和质量进行了评价。进行拉伸试验。进行方差分析,确定加工条件对力学性能的主要影响。结果表明,PC/ABS(70/30)具有较高的拉伸性能。拉伸断裂相当于拉伸强度的30%。填充模式对响应的贡献最大。同心花纹具有较高的抗拉强度。抗拉强度和质量比表明了质量对抗拉强度的影响。印刷参数对变形的影响取决于共混比例。更高的打印速度和更低的层高提供了更好的工件质量。原创性/价值本研究对使用PC/ABS长丝的三维打印部件的设计和制造具有启示意义。考虑到文献未探讨的主要印刷参数和组合,应用了广泛的实验矩阵,旨在完全理解机械行为。
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来源期刊
Rapid Prototyping Journal
Rapid Prototyping Journal 工程技术-材料科学:综合
CiteScore
8.30
自引率
10.30%
发文量
137
审稿时长
4.6 months
期刊介绍: Rapid Prototyping Journal concentrates on development in a manufacturing environment but covers applications in other areas, such as medicine and construction. All papers published in this field are scattered over a wide range of international publications, none of which actually specializes in this particular discipline, this journal is a vital resource for anyone involved in additive manufacturing. It draws together important refereed papers on all aspects of AM from distinguished sources all over the world, to give a truly international perspective on this dynamic and exciting area. -Benchmarking – certification and qualification in AM- Mass customisation in AM- Design for AM- Materials aspects- Reviews of processes/applications- CAD and other software aspects- Enhancement of existing processes- Integration with design process- Management implications- New AM processes- Novel applications of AM parts- AM for tooling- Medical applications- Reverse engineering in relation to AM- Additive & Subtractive hybrid manufacturing- Industrialisation
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