Study of mechanical properties of epoxy/graphene and epoxy/halloysite nanocomposites

IF 6.1 3区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nanotechnology Reviews Pub Date : 2023-01-01 DOI:10.1515/ntrev-2022-0520

L. Lapčík, Harun Sepetcioglu, Yousef Murtaja, B. Lapčíková, M. Vašina, M. Ovsik, M. Stanek, S. Gautam

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引用次数: 3

Abstract

Abstract This article aimed to compare various mechanical properties of epoxy/graphene and epoxy/halloysite nanocomposites. Graphene nanoplatelets (GnPs) and halloysite nanotubes (HNTs) were used as fillers at different concentrations. The studied fillers were dispersed in the epoxy resin matrices. Elastic–plastic mechanical behavior modulation was observed utilizing the fillers’ nanoparticles and carboxyl-terminated butadiene–acrylonitrile copolymer rubber-modified epoxy resin. The hypothesis of the possible preceding inter-particle gliding of the individual GnPs in the complex resin nanocomposite matrix during mechanical testings was also confirmed. Increased ductility (elongation at break increased from 0.33 mm [neat matrix] to 0.46 mm [1 wt% GnPs] [39% increase]) and plasticity of the GnP nanocomposite samples were observed. In contrast, the decreasing mechanical stiffness as reflected in the decreased Young’s modulus of elasticity (from 3.4 to 2.7 GPa [20% decrease]) was found for the epoxy/HNT nanocomposites. The obtained dynamic stiffness of the investigated nanocomposites confirmed the complexity of the mechanical response of the studied material systems as a combination of the ductile and brittle phenomena.

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环氧/石墨烯及环氧/高岭土纳米复合材料力学性能研究

摘要本文旨在比较环氧/石墨烯和环氧/高岭土纳米复合材料的各种力学性能。采用不同浓度的石墨烯纳米片(GnPs)和高岭土纳米管(HNTs)作为填料。所研究的填料分散在环氧树脂基体中。利用纳米填料和端羧基丁二烯-丙烯腈共聚物橡胶改性环氧树脂对弹塑性力学行为进行了调节。在力学测试中，单个GnPs在复合树脂纳米复合材料基体中可能预先发生粒子间滑动的假设也得到了证实。结果表明，GnP纳米复合材料的延展性(断裂伸长率从0.33 mm[纯基体]提高到0.46 mm [1 wt% GnPs][提高39%])和塑性均有所提高。相比之下，环氧树脂/HNT纳米复合材料的机械刚度下降，反映在杨氏弹性模量下降(从3.4到2.7 GPa[降低20%])。所获得的纳米复合材料的动刚度证实了所研究材料系统力学响应的复杂性，即韧性和脆性现象的结合。

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来源期刊

Nanotechnology Reviews CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

11.40

自引率

13.50%

发文量

137

审稿时长

7 weeks

期刊介绍： The bimonthly journal Nanotechnology Reviews provides a platform for scientists and engineers of all involved disciplines to exchange important recent research on fundamental as well as applied aspects. While expert reviews provide a state of the art assessment on a specific topic, research highlight contributions present most recent and novel findings. In addition to technical contributions, Nanotechnology Reviews publishes articles on implications of nanotechnology for society, environment, education, intellectual property, industry, and politics.