航空用石墨烯改性铝电缆导体研制进展
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    摘要:

    飞机电气化、信息化程度的不断提高,对航空电缆提出了更高的要求,常规铝导体的性能不能满足新型航空电缆对轻质、高强、高导电性能的需求。石墨烯具备极高的强度和导电率,是理想的高强高导改性材料。首先对比了现有电工铝和电工铜在力学性能和导电率上的差距;随后讨论了石墨烯优异的力学和电学性能;最后综述了石墨烯在改善铝基体力学性能和电学性能方面的研究进展。结果表明,采用粉末冶金、连铸连轧等制备工艺,石墨烯能有效提高铝基体的拉伸强度,同时有望保持延伸率不降低,但也会使导电率降低0.5%~4%;只有实现石墨烯在铝基体中的连续分布,才能充分发挥出石墨烯高导电率的优势,提高铝基体的电学性能。采用粉末冶金和连铸连轧等工艺手段,牺牲少量导电率,通过石墨烯大幅提高铝导体的力学性能,从而满足航空电缆的相关需求,将具备广阔的应用前景。

    Abstract:

    With the continuous improvement of aircraft electrification and informatization, higher requirements are put forward for aviation cables. The performance of conventional aluminum conductor can not meet the requirements of new aviation cables for light weight, high strength and high conductivity. Graphene is an ideal modified material with high strength and high conductivity. Firstly, this article compares the gap between the existing electrical aluminum and electrical copper in mechanical properties and electrical conductivity; then the excellent mechanical and electrical properties of graphene were discussed; finally, the research progress of graphene in improving the mechanical and electrical properties of the aluminum matrix was reviewed. The results show that using powder metallurgy, continuous casting and rolling, graphene can greatly improve the mechanical properties of the aluminum matrix, and keep the elongation, but also reduce the conductivity by 0.5% to 4%; only the continuous graphene in the aluminum matrix can take full advantages of its high conductivity and improve the electrical properties of the aluminum matrix. At the present stage, by using powder metallurgy or continuous casting and rolling preparation technology, sacrificing a small amount of electrical conductivity, the mechanical properties of aluminum conductor are greatly improved, so as to meet the relevant needs of aviation cables, which will have a broad application prospect.

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李炯利,张海平,王旭东,等.航空用石墨烯改性铝电缆导体研制进展[J].民用飞机设计与研 究,2021(3):75-80LI Jiongli, ZHANG Haiping, WANG Xudong, et al.[J]. Civil Aircraft Design and Research,2021,(3):75-80. ( in Chinese)

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  • 在线发布日期: 2021-10-13
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