High strain rate behavior of graphene-epoxy nanocomposites
作者： Özgen U. Colak , Nadia Bahlouli , Deniz Uzunsoy , Charles Francart
DOI: 10.1016/J.POLYMERTESTING.2019.106219
关键词:
摘要: Abstract This work consists of the synthesis high purity graphene nanoflakes (GNF), manufacturing GNF-epoxy nanocomposites and mechanical characterization nanocomposite at quasi static strain rates, (2750/s - 1.E−5/s). GNF were synthesized by using electric arc discharge technique. Thermogravimetry/Differential Thermal Analysis (TG/DTA) reveals crystallinity. Raman spectra broad Brunauer-Emmet-Teller (BET) specific surface area indicate that has several layers. Following solution mixing process nanocomposites, influences rate on behaviors are investigated under dynamic loadings. High uniaxial compression tests (1270–2750/s) Split Hopkinson Pressure Bar (SHPB) (1.E−3 1.E−5/s) with two contents (0.1 0.5 wt %) performed room temperature. The maximum elasticity modulus achieved 0.5 wt% 2350/s corresponds to a 68% increase compared neat epoxy. yield strength material is doubled loading conditions loading.
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