Gil Leon D, Monteiro Sergio Neves, Colorado Henry A
CCComposites Laboratory, University of Antioquia, Calle 67 No. 53-108, Medellín 050010, Colombia.
Military Institute of Engineering, IME, Praça General Tibúrcio 80, Urca, Rio de Janeiro 22290-270, RJ, Brazil.
Polymers (Basel). 2024 Aug 28;16(17):2434. doi: 10.3390/polym16172434.
This investigation explores the fabrication of polymer matrix nanocomposites via additive manufacturing (AM), using a UV photopolymerization resin and copper nanoparticles (Cu-NPs) with vat photopolymerization 3D printing technology. The aim in this study is to investigate the mentioned materials in different formulations in terms of inexpensive processing, the property related variability, and targeting multifunctional applications. After the AM process, samples were post-cured with UV light in order to obtain better mechanical properties. The particles and resin were mixed using an ultrasonicator, and the particle contents used were 0.0, 0.5, and 1.0 wt %. The process used in this investigation was simple and inexpensive, as the technologies used are quite accessible, from the 3D printer to the UV curing device. These formulations were characterized with scanning electron microscopy (SEM) to observe the materials' microstructure and tensile tests to quantify stress-strain derived properties. Results showed that, besides the simplicity of the process, the mixing was effective, which was observed in the scanning electron microscope. Additionally, the tensile strength was increased with the UV irradiation exposure, while the strain properties did not change significantly.
本研究通过增材制造（AM），使用紫外光聚合树脂和铜纳米颗粒（Cu-NPs）以及光固化3D打印技术，探索聚合物基纳米复合材料的制造方法。本研究的目的是研究上述不同配方材料在廉价加工、性能相关变异性以及多功能应用方面的情况。增材制造过程完成后，样品用紫外光进行后固化，以获得更好的机械性能。使用超声仪将颗粒与树脂混合，所用颗粒含量分别为0.0、0.5和1.0 wt%。本研究采用的方法简单且成本低廉，因为从3D打印机到紫外固化设备，所使用的技术都很容易获得。通过扫描电子显微镜（SEM）对这些配方进行表征，以观察材料的微观结构，并通过拉伸试验来量化应力-应变衍生性能。结果表明，除了方法简单外，混合效果良好，这在扫描电子显微镜中可以观察到。此外，拉伸强度随紫外辐照暴露而增加，而应变性能没有显著变化。
