收稿日期: 2019-01-25
网络出版日期: 2020-12-29
Effects of different interfaces on mechanical properties of graphene oxide-carbon fibre/epoxy resin composites
Received date: 2019-01-25
Online published: 2020-12-29
采用不同制备工艺制备氧化石墨烯 (graphene oxide, GO)-碳纤维 (carbomfibre, CF)/环氧树脂 (epoxy, EP) 复合材料,探讨了 3 种界面结合机理,对比分析了不同的界面结合方式对氧化石墨烯-碳纤维/环氧树脂复合材料界面剪切强度 (interfacialshear strength, IFSS)、弯曲性能及层间剪切强度 (interlaminar shearstrength, ILSS) 的影响. 研究结果表明:氧化石墨烯对复合材料界面的作用主要是增强界面处机械互锁能力,以及少量化学键形成产生的作用力;氧化石墨烯吸附在碳纤维表面再与环氧树脂形成的界面结合方式可使复合材料界面剪切强度提升 66.97%,弯曲强度提升 31.84%, 层间剪切强度提升 10%. 可见,氧化石墨烯利用率高, 工艺简单, 有利于实现工业生产.
张亚萍, 石磊, 郭小凤, 刘立起 . 界面结合方式对氧化石墨烯-碳纤维/环氧树脂复合材料性能的影响[J]. 上海大学学报(自然科学版), 2020 , 26(6) : 927 -936 . DOI: 10.12066/j.issn.1007-2861.2123
Graphene oxide (GO)-carbon fibre/epoxy (EP) composites were prepared via different synthesis methods. The three interface bonding mechanisms were discussed. The effects of different interfaces on the interfacial shear strength (IFSS), flexural properties, and interlaminar shear strength (ILSS) of GO-carbon fibre/epoxy composites were compared and analysed. The results show that the role of GO on the interface of the composite is primarily to enhance the mechanical interlocking effect at the interface and the force generated by the formation of a small amount of chemical bonds. The interfacial bonding mode of GO adsorbed on the surface of carbon fibre and subsequently formed with epoxy resin increases the interfacial shear strength of the composite by 66.97%, the bending strength by 31.84%, and the interlaminar shear strength by 10%. The utilisation of GO is the highest, and the process is simple. It is therefore conducive to the realisation of industrial production.
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