4.5 Article

The Interlaminar Mechanical and Impact Properties of Fibre Metal Laminates Reinforced with Graphene

Journal

FIBERS AND POLYMERS
Volume 23, Issue 5, Pages 1422-1430

Publisher

KOREAN FIBER SOC
DOI: 10.1007/s12221-022-4554-9

Keywords

FMLs; Graphene; Interlaminar mechanical performance; Charpy; Mechanical testing

Funding

  1. Natural Science Foundation of Liaoning Province [2019-MS-256]
  2. Aeronautical Science Foundation of China [2020Z055054002]
  3. Scientific Research Funds from Liaoning Education Department [JYT2020007]
  4. Training Project of Liaoning Higher Education Institutions [2018LNGXGJWPY-YB008]
  5. National Innovation and Entrepreneurship Training Program for College Students [D202104022110228193]

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The properties of Glass fibre aluminium laminate (Glare) can be enhanced by adding graphene as a nanofiller to the matrix. The addition of graphene improves the interlaminar mechanical and dynamic impact properties of Glare. The graphene-modified Glare shows significantly improved mechanical performance, with the maximum enhancement observed at a graphene content of 1.0 wt%. The toughening mechanism of graphene involves strengthening the interfaces and the resin matrix of Glare.
Glass fibre aluminium laminate (Glare) is widely used in various fields because of its excellent performance. However, its properties can be further enhanced by adding nanofillers, such as graphene, to the matrix. Graphene is a cost-effective toughening agent because of its excellent specific strength, economy and good compatibility. The interlaminar mechanical and dynamic impact properties of Glare were improved by uniformly dispersed graphene (0, 0.2, 0.3, 0.5 and 1.0 wt%). The interlaminar mechanical properties (short beam shear and single lap test) of the graphene-modified (0.5 wt%) Glare were increased by 42.24% and 25.65 %, respectively, compared with the pure epoxy resin matrix. At a graphene content of 1.0 wt%, the Charpy impact energy and strength increased by 163.58 % and 126.33 %, respectively, and reached the maximum value. The microscopic images and schematic diagrams illustrated the toughening mechanism of graphene, including the enhancement of the aluminium/resin and fibre/resin interfaces and the performance of the resin matrix. The toughening of the resin matrix was achieved through the formation of a mechanical linkage between the graphene and the matrix, which indicated that more time and energy would be required to destroy it.

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