Petousis Markos, Michailidis Nikolaos, Papadakis Vassilis M, Korlos Apostolos, Mountakis Nikolaos, Argyros Apostolos, Dimitriou Evgenia, Charou Chrysa, Moutsopoulou Amalia, Vidakis Nectarios
Department of Mechanical Engineering, Hellenic Mediterranean University, 71410 Heraklion, Greece.
Physical Metallurgy Laboratory, Mechanical Engineering Department, School of Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Nanomaterials (Basel). 2023 May 9;13(10):1588. doi: 10.3390/nano13101588.
The current research aimed to examine the thermomechanical properties of new nanocomposites in additive manufacturing (AM). Material extrusion (MEX) 3D printing was utilized to evolve acrylonitrile butadiene styrene (ABS) nanocomposites with silicon nitride nano-inclusions. Regarding the mechanical and thermal response, the fabricated 3D-printed samples were subjected to a course of standard tests, in view to evaluate the influence of the SiN nanofiller content in the polymer matrix. The morphology and fractography of the fabricated filaments and samples were examined using scanning electron microscopy and atomic force microscopy. Moreover, Raman and energy dispersive spectroscopy tests were accomplished to evaluate the composition of the matrix polymer and nanomaterials. Silicon nitride nanoparticles were proved to induce a significant mechanical reinforcement in comparison with the polymer matrix without any additives or fillers. The optimal mechanical response was depicted to the grade ABS/SiN 4 wt. %. An impressive increase in flexural strength (30.3%) and flexural toughness (47.2%) was found. The results validate that these novel ABS nanocomposites with improved mechanical properties can be promising materials.
当前的研究旨在考察增材制造（AM）中新型纳米复合材料的热机械性能。采用材料挤出（MEX）3D打印技术制备了含有氮化硅纳米夹杂物的丙烯腈-丁二烯-苯乙烯（ABS）纳米复合材料。关于机械和热响应，对制造的3D打印样品进行了一系列标准测试，以评估聚合物基体中SiN纳米填料含量的影响。使用扫描电子显微镜和原子力显微镜对制造的长丝和样品的形态及断口形貌进行了检查。此外，还完成了拉曼光谱和能量色散光谱测试，以评估基体聚合物和纳米材料的组成。结果证明，与不含任何添加剂或填料的聚合物基体相比，氮化硅纳米颗粒能产生显著的机械增强作用。最佳机械响应出现在ABS/SiN 4 wt.%等级。发现弯曲强度（提高了30.3%）和弯曲韧性（提高了47.2%）有显著增加。结果证实，这些具有改善机械性能的新型ABS纳米复合材料有望成为有前途的材料。
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