Dias Gonçalves Victor Paes, Vieira Carlos Maurício Fontes, Simonassi Noan Tonini, Perissé Duarte Lopes Felipe, Youssef George, Colorado Henry A
Advanced Materials Laboratory-LAMAV, State University of the Northern Rio de Janeiro-UENF, Av. Alberto Lamego, 2000, Campos dos Goytacazes 28013-602, RJ, Brazil.
Experimental Mechanics Laboratory, Department of Mechanical Engineering, San Diego State University, 5500 Campanile Dr., San Diego, CA 92182, USA.
Polymers (Basel). 2024 Oct 17;16(20):2921. doi: 10.3390/polym16202921.
This study investigates the differences in mechanical properties between acrylonitrile butadiene styrene (ABS) samples produced using fused deposition modeling (FDM) and stereolithography (SLA) using ABS filaments and ABS-like resin, respectively. The central question is to determine how these distinct printing techniques affect the properties of ABS and ABS-like resin and which method delivers superior performance for specific applications, particularly in dental treatments. The evaluation methods used in this study included Shore D hardness, accelerated aging, tensile testing, Izod impact testing, flexural resistance measured by a 3-point bending test, and compression testing. Poisson's ratio was also assessed, along with microstructure characterization, density measurement, confocal microscopy, dilatometry, wettability, Fourier-transform infrared spectroscopy (FTIR), and nanoindentation. It was concluded that ABS has the same hardness in both manufacturing methods; however, the FDM process results in significantly superior mechanical properties compared to SLA. Microscopy demonstrates a more accurate sample geometry when fabricated with SLA. It is also concluded that printable ABS is suitable for applications in dentistry to fabricate models and surgical guides using the SLA and FDM methods, as well as facial protectors for sports using the FDM method.
本研究调查了分别使用熔融沉积成型（FDM）和立体光刻（SLA）技术、以丙烯腈丁二烯苯乙烯（ABS）长丝和类ABS树脂制作的ABS样品在机械性能方面的差异。核心问题是确定这些不同的打印技术如何影响ABS和类ABS树脂的性能，以及哪种方法在特定应用中，特别是在牙科治疗中能提供更优的性能。本研究中使用的评估方法包括邵氏D硬度测试、加速老化测试、拉伸测试、悬臂梁冲击测试、通过三点弯曲试验测量的抗弯强度以及压缩测试。还评估了泊松比，同时进行了微观结构表征、密度测量、共聚焦显微镜检查、热膨胀测定、润湿性测试、傅里叶变换红外光谱（FTIR）分析和纳米压痕测试。研究得出的结论是，两种制造方法下ABS的硬度相同；然而，与SLA相比，FDM工艺的机械性能明显更优。显微镜检查表明，用SLA制造时样品几何形状更精确。研究还得出结论，可打印的ABS适用于牙科领域，通过SLA和FDM方法制作模型和手术导板，以及通过FDM方法制作运动用面部保护器。
