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Multidimensional Nanocomposites of Epoxy Reinforced with 1D and 2D Carbon Nanostructures for Improve Fracture Resistance

机译:用一维和二维碳纳米结构增强环氧树脂的多维纳米复合材料以提高抗断裂性

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摘要

A hybrid nanocomposites based on epoxy reinforced with a combination of 1D and 2D carbon nanomaterials for improving impact resistance are reported. Multi-walled carbon nanotubes and oxidized-multi-walled carbon nanotubes are used as 1D nanoreinforcements, and graphene derivative materials such as graphene oxide and reduced graphene oxide are utilized as 2D nanoreinforcements. In this research, the impact resistance of epoxy matrix reinforced with 1D or 2D and the mixture of both nanomaterials is studied. The research is focused on evaluation of the influence of adding different combinations of nanomaterials into epoxy resin and their Izod impact response. Moreover, fracture surface of nanocomposites is observed by scanning electron microscopy. Images show differences between the surfaces of brittle nature on thermoset epoxy polymer and tough nanocomposites. Synergy created with 1D and 2D nanomaterials produces stable dispersions in the processing, reflected in the interface. The interactions in nanocomposites are evidenced by infrared spectra, principally on the peaks related to oxygenated functional groups present in nanomaterials and absent in polymer matrix. Consequently, an increase of 138% in fracture strength of nanocomposites is exhibited, in comparison to the neat epoxy matrix. In addition, hybrid nanocomposites were synthesized in two different methods to evaluate the influence of manufacturing method on final properties of nanocomposites.
机译:报道了一种基于环氧的杂化纳米复合材料,该复合材料通过结合使用一维和二维碳纳米材料增强的环氧树脂来提高抗冲击性。多壁碳纳米管和氧化多壁碳纳米管被用作一维纳米增强材料,而石墨烯衍生物材料(例如氧化石墨烯和还原性氧化石墨烯)被用作二维纳米增强材料。在这项研究中,研究了一维或二维增强的环氧树脂基体以及两种纳米材料的混合物的抗冲击性。该研究集中在评估向环氧树脂中添加纳米材料的不同组合的影响及其悬臂梁式冲击响应。此外,通过扫描电子显微镜观察到纳米复合材料的断裂表面。图像显示了热固性环氧聚合物和坚韧的纳米复合材料的脆性表面之间的差异。由一维和二维纳米材料产生的协同作用在加工过程中产生稳定的分散,反映在界面上。纳米复合材料中的相互作用通过红外光谱证明,主要是在与纳米材料中存在的氧合官能团相关的峰上,而在聚合物基质中却不存在。因此,与纯环氧基质相比,纳米复合材料的断裂强度提高了138%。此外,用两种不同的方法合成了杂化纳米复合材料,以评估制造方法对纳米复合材料最终性能的影响。

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