Optimization and Experimental Investigation of the Mechanical Properties of Copper/Graphene Oxide/Epoxy Hybrid Nanocomposites

IF 1.5 4区 材料科学 Q4 MATERIALS SCIENCE, COMPOSITES
M. Mahouri, V. Parvaneh, A. Dadrasi, G. Shafiei Sabet
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Abstract

This study focuses on the effect of copper nanoparticles and graphene oxide nanosheets on the tensile properties and impact strength of epoxy-based hybrid nanocomposites. A mechanical mixer and an ultrasonicator were used to mix the reinforcements with the epoxy resin. Field Emission Scanning Electron Microscope (FE-SEM) was used to examine the fracture surface morphology, and tensile and impact tests were conducted to assess the mechanical properties of the nanocomposites. These properties were optimized by a genetic algorithm. The results showed that adding 0.75 wt% copper nanoparticles and 1 wt.% graphene oxide to the epoxy increased its tensile strength by 45.7 and 37.14%, respectively, compared with those of pure epoxy, and adding 0.5 wt% graphene oxide and 0.75 wt% copper nanoparticle led to a 61.76 and 32.35% increase in its fracture strength. The tensile test results indicated that the tensile strength of specimens reinforced with 0.125 wt% graphene oxide and 0.125 wt% copper nanoparticles increased by 47.51% compared with those of pure epoxy and adding 0.375 wt% graphene oxide and 0.375 wt% copper nanoparticles increased the fracture energy by 91.18%.

Abstract Image

铜/氧化石墨烯/环氧树脂混合纳米复合材料力学性能的优化与实验研究
本研究的重点是铜纳米颗粒和氧化石墨烯纳米片对环氧基混合纳米复合材料拉伸性能和冲击强度的影响。使用机械搅拌器和超声波发生器将增强材料与环氧树脂混合。使用场发射扫描电子显微镜(FE-SEM)检查断裂表面形态,并进行拉伸和冲击试验以评估纳米复合材料的机械性能。通过遗传算法对这些性能进行了优化。结果表明,与纯环氧树脂相比,在环氧树脂中添加 0.75 wt% 的纳米铜粒子和 1 wt.% 的氧化石墨烯可使其拉伸强度分别提高 45.7% 和 37.14%,而添加 0.5 wt% 的氧化石墨烯和 0.75 wt% 的纳米铜粒子可使其断裂强度分别提高 61.76% 和 32.35%。拉伸试验结果表明,与纯环氧树脂相比,添加 0.125 wt% 氧化石墨烯和 0.125 wt% 纳米铜颗粒增强的试样的拉伸强度提高了 47.51%,添加 0.375 wt% 氧化石墨烯和 0.375 wt% 纳米铜颗粒增强的试样的断裂能提高了 91.18%。
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来源期刊
Mechanics of Composite Materials
Mechanics of Composite Materials 工程技术-材料科学:复合
CiteScore
2.90
自引率
17.60%
发文量
73
审稿时长
12 months
期刊介绍: Mechanics of Composite Materials is a peer-reviewed international journal that encourages publication of original experimental and theoretical research on the mechanical properties of composite materials and their constituents including, but not limited to: damage, failure, fatigue, and long-term strength; methods of optimum design of materials and structures; prediction of long-term properties and aging problems; nondestructive testing; mechanical aspects of technology; mechanics of nanocomposites; mechanics of biocomposites; composites in aerospace and wind-power engineering; composites in civil engineering and infrastructure and other composites applications.
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