37th Risø International Symposium on Materials Science | |
Improving fiber/matrix interfacial strength through graphene and graphene-oxide nano platelets | |
Pegoretti, A.^1 ; Mahmood, H.^1 ; Pedrazzoli, D.^2 ; Kalaitzidou, K.^3,4 | |
Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento | |
I38123, Italy^1 | |
Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland | |
OH | |
44106-7202, United States^2 | |
G. W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta | |
GA | |
30336, United States^3 | |
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta | |
GA | |
30322, United States^4 | |
关键词: Fiber/matrix interface; Glass fiber reinforced composite; Interfacial shear strength; Interfacial strength; Micromechanical tests; Polypropylene based composites; Single fiber composite; Structural composites; | |
Others : https://iopscience.iop.org/article/10.1088/1757-899X/139/1/012004/pdf DOI : 10.1088/1757-899X/139/1/012004 |
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来源: IOP | |
【 摘 要 】
Fiber/matrix interfacial shear strength (ISS) is a key factor determining the mechanical properties of structural composites. In this manuscript the positive effects of both graphene and graphene oxide in improving the ISS value of glass-fiber reinforced composites are experimentally demostrated. Two strategies will be presented: i) uniform dispersion of the nanofillers in the polymer matrix or ii) selective deposition of the nanofillers at the fiber/matrix interface. Both thermoplastic (polypropylene) and thermosetting (epoxy) matrices are investigated and the effects of nanoparticles on the fiber/matrix interface are determined through micromechanical tests on single-fiber composites. Finally, the beneficial effects of the investigated nanofillers on both mechanical and functional (strain monitoring) properties of multiscale macrocomposites are experimentally proved for the cases of polypropylene-based composites reinforced with short glass fibers and on epoxy-based composites reinforced with continuous unidirectional glass fibers.
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