Investigation of the flexural and thermomechanical properties of nanoclay/graphene reinforced carbon fiber epoxy composites
Investigation of the flexural and thermomechanical properties of nanoclay/graphene reinforced carbon fiber epoxy composites
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DOI：
10.1557/jmr.2019.302
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发表时间：
2019-11-14
影响因子：
2.7
通讯作者：
Syed, F.
中科院分区：
文献类型：
--
作者：
Tareq, Md Sarower;Zainuddin, S.;Syed, F.
研究了添加单一和二元纳米颗粒（纳米粘土和石墨烯）的环氧基碳纤维复合材料（CFC）的弯曲性能和热机械性能。发现纳米粘土在增加CFC的刚度方面更有效，而石墨烯在实现更高强度方面更有效。添加纳米粘土的样品具有最高的弯曲（64.5 GPa）和存储（25.3 GPa）模量在所有类型。石墨烯添加的样品表现出最高的改善（21%）的弯曲强度，并表现出最稳定的热机械性能与最高的能量耗散能力（3.1 GPa损耗模量）在弯曲试验和动态力学分析（DMA），分别。相比之下，添加二元纳米颗粒降低了刚度，并显着增加了应变破坏（42%）的复合材料。光学显微镜和扫描电子显微镜表明，除了纳米粒子显着减少分层和基体开裂的CFCs，因为强大的界面结合和增韧基体，分别。
Flexural and thermomechanical properties of the epoxy-based carbon fiber composites (CFCs) on addition of single and binary nanoparticles (nanoclay and graphene) have been investigated. It was found that nanoclay acts more effectively in increasing the stiffness of the CFCs, whereas graphene is more effective in achieving higher strength. Nanoclay-added samples exhibited highest flexural (64.5 GPa) and storage (25.3 GPa) modulus among all types. Graphene-added samples showed highest improvement (by 21%) in flexural strength and exhibited most stable thermomechanical properties with highest energy dissipation capability (3.1 GPa loss modulus) in flexural test and dynamic mechanical analysis (DMA), respectively. By contrast, addition of binary nanoparticles reduced the stiffness and significantly increased the strain to failure (42%) of the composites. Optical microscopy and scanning electron microscopy indicated that addition of nanoparticles significantly reduced delamination and matrix cracking of the CFCs because of strong interfacial bonding and toughened matrix, respectively.