Papadakis Vassilis M, Petousis Markos, Michailidis Nikolaos, Spyridaki Maria, Valsamos Ioannis, Argyros Apostolos, Gkagkanatsiou Katerina, Moutsopoulou Amalia, Vidakis Nectarios
Department of Industrial Design and Production Engineering, University of West Attica, 122 43 Athens, Greece.
Foundation for Research and Technology Hellas (FORTH), Institute of Electronic Structure and Laser (IESL), 70013 Heraklion, Greece.
Nanomaterials (Basel). 2024 Oct 19;14(20):1680. doi: 10.3390/nano14201680.
Herein, silicon nitride (SiN) was the selected additive to be examined for its reinforcing properties on high-density polyethylene (HDPE) by exploiting techniques of the popular material extrusion (MEX) 3D printing method. Six different HDPE/SiN composites with filler percentages ranging between 0.0-10.0 wt. %, having a 2.0 step, were produced initially in compounds, then in filaments, and later in the form of specimens, to be examined by a series of tests. Thermal, rheological, mechanical, structural, and morphological analyses were also performed. For comprehensive mechanical characterization, tensile, flexural, microhardness (M-H), and Charpy impacts were included. Scanning electron microscopy (SME) was used for morphological assessments and microcomputed tomography (μ-CT). Raman spectroscopy was conducted, and the elemental composition was assessed using energy-dispersive spectroscopy (EDS). The HDPE/SiN composite with 6.0 wt. % was the one with an enhancing performance higher than the rest of the composites, in the majority of the mechanical metrics (more than 20% in the tensile and flexural experiment), showing a strong potential for SiN as a reinforcement additive in 3D printing. This method can be easily industrialized by further exploiting the MEX 3D printing method.
在此，通过利用流行的材料挤出（MEX）3D打印方法的技术，选择氮化硅（SiN）作为添加剂，以研究其对高密度聚乙烯（HDPE）的增强性能。最初制备了六种不同的HDPE/SiN复合材料，填料百分比在0.0 - 10.0 wt.%之间，步长为2.0，先制成化合物，再制成细丝，最后制成试样形式，以便通过一系列测试进行检验。还进行了热、流变、机械、结构和形态分析。为了进行全面的机械表征，包括拉伸、弯曲、显微硬度（M - H）和夏比冲击测试。使用扫描电子显微镜（SME）进行形态评估以及微计算机断层扫描（μ - CT）。进行了拉曼光谱分析，并使用能量色散光谱（EDS）评估元素组成。在大多数机械指标中（拉伸和弯曲实验中超过20%），含6.0 wt.% SiN的HDPE/SiN复合材料的性能增强高于其他复合材料，表明SiN作为3D打印中的增强添加剂具有很大潜力。通过进一步利用MEX 3D打印方法，这种方法可以很容易地实现工业化。
