Α coherent optimization course of the silicon nitride nanofiller load in medical grade isotactic polypropylene for material extrusion additive manufacturing: Rheology, engineering response, and cost-effectiveness

IF 2.2 4区 化学 Q3 CHEMISTRY, PHYSICAL Colloid and Polymer Science Pub Date : 2024-02-22 DOI:10.1007/s00396-024-05229-y
Nectarios Vidakis, Nikolaos Michailidis, Apostolos Argyros, Nikolaos Mountakis, Vassilis Papadakis, Mariza Spiridaki, Amalia Moutsopoulou, Evangelos Sfakiotakis, Markos Petousis
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Abstract

By enabling the development of complex structures with adaptable qualities, techniques for additive manufacturing have opened new routes for material development and research. In this research, silicon nitride (Si3N4) ceramic nanoparticles are incorporated into polypropylene (PP) matrices. Various loading levels and standardized test specimens that adhere to ASTM criteria are created. The main goal is to thoroughly characterize these composites with an emphasis on their mechanical capabilities. The rheological, thermomechanical, and morphological properties of 3D-printed PP/Si3N4 composites created using material extrusion (MEX) 3D printing are examined. Thermogravimetric analysis and differential scanning calorimetry are exploited to study thermal stability and phase transitions in composite materials. Mechanical testing is conducted to determine mechanical qualities, such as flexural and tensile strength and modulus of elasticity. For detailed characterization of the nanocomposites, scanning electron microscopy, and Raman spectroscopy are also performed. The results provide insight into the impact of Si3N4 nanoparticles on the mechanical properties, thermal stability, and rheological behavior of PP/Si3N4 composites. The 2 wt% Si3N4 filler showed overall the best performance improvement (21% in the tensile modulus of elasticity, 15.7% in the flexural strength, and high values in the remaining properties assessed). The nanocomposite with the maximum Si3N4 loading of wt% showed a 33.6% increased microhardness than the pure PP thermoplastic, showing a promising wear resistance for the parts built with it. This research reveals the ability of Si3N4 ceramic nanoparticles to improve the mechanical characteristics of PP-based compounds produced by MEX 3D printing.

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用于材料挤出增材制造的医用级异方聚丙烯中氮化硅纳米填料负载的一致性优化过程:流变学、工程响应和成本效益
摘要 通过开发具有适应性的复杂结构,增材制造技术为材料开发和研究开辟了新途径。在这项研究中,氮化硅(Si3N4)纳米陶瓷颗粒被加入到聚丙烯(PP)基体中。根据 ASTM 标准制作了各种加载水平和标准化测试样本。主要目的是全面鉴定这些复合材料,重点是其机械性能。研究了使用材料挤压(MEX)三维打印技术制作的 PP/Si3N4 复合材料的流变学、热力学和形态学特性。利用热重分析和差示扫描量热法研究复合材料的热稳定性和相变。机械测试用于确定机械质量,如弯曲和拉伸强度以及弹性模量。为了对纳米复合材料进行详细表征,还进行了扫描电子显微镜和拉曼光谱分析。研究结果有助于深入了解 Si3N4 纳米粒子对 PP/Si3N4 复合材料的机械性能、热稳定性和流变行为的影响。2 wt% Si3N4 填料的总体性能改善效果最佳(拉伸弹性模量提高 21%,弯曲强度提高 15.7%,其余性能评估值均较高)。与纯 PP 热塑性塑料相比,最大 Si3N4 含量为 wt%的纳米复合材料的显微硬度提高了 33.6%,这表明用其制造的部件具有良好的耐磨性。这项研究揭示了 Si3N4 陶瓷纳米粒子改善 MEX 3D 打印技术生产的 PP 基化合物机械特性的能力。 图表摘要
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来源期刊
Colloid and Polymer Science
Colloid and Polymer Science 化学-高分子科学
CiteScore
4.60
自引率
4.20%
发文量
111
审稿时长
2.2 months
期刊介绍: Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.
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