Influence of macro-topography on mechanical performance of 0.5 wt%
nanoclay/multi-layer graphene-epoxy nanocomposites

Rasheed Atif; Fawad Inam; Rasheed Atif; Fawad Inam

doi:10.3934/matersci.2016.4.1294

AIMS Materials Science

2016, Volume 3, Issue 4: 1294-1308. doi: 10.3934/matersci.2016.4.1294

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Influence of macro-topography on mechanical performance of 0.5 wt% nanoclay/multi-layer graphene-epoxy nanocomposites

Rasheed Atif ,
Fawad Inam ^,

Northumbria University, Faculty of Engineering and Environment, Department of Mechanical and Construction Engineering, Newcastle upon Tyne NE1 8ST, United Kingdom

Received: 28 July 2016 Accepted: 01 September 2016 Published: 25 January 2016

Influence of topography on the variation in mechanical performance of 0.5 wt% multi-layer graphene (MLG)/nanoclay-epoxy nanocomposites has been studied. Three different systems were produced: 0.5 wt% MLG-EP, 0.5 wt% nanoclay-EP, and 0.25 wt% MLG-0.25 wt% nanoclay-EP. The influence of synergistic effect on mechanical performance in case of hybrid nanocomposites is also studied. Various topography parameters studied include maximum roughness height (R_z or R_max),root mean square value (R_q),roughness average (R_a), and surface waviness (W_a).The R_z of as-cast 0.5 wt% MLG, nanoclay, and 0.25 wt% MLG-0.25 wt% nanoclay-EP nanocomposites were 41.43 μm, 43.54 μm, and 40.28 μm, respectively. The 1200P abrasive paper and the velvet cloth decreased the R_zvalue of samples compared with as-cast samples. In contrary, the 60P and 320P abrasive papers increased the R_z values. Dueto the removal of material from the samples by erosion, the dimensions of samples decreased. The weight loss due to erosion was commensurate with the coarseness of abrasive papers. It was observed that MLG is more influential in enhancing the mechanical performance of epoxy nanocomposites than nanoclay. In addition, it was observed that mechanical performance of hybrid nanocomposites did not show a marked difference suggesting that synergistic effects are not strong enough in MLG and nanoclay.
- topography,
- mechanical performance,
- fracture toughness,
- 0.5 wt% MLG/nanoclayepoxy nanocomposites,
- dynamic mechanical performance
Citation: Rasheed Atif, Fawad Inam. Influence of macro-topography on mechanical performance of 0.5 wt%nanoclay/multi-layer graphene-epoxy nanocomposites[J]. AIMS Materials Science, 2016, 3(4): 1294-1308. doi: 10.3934/matersci.2016.4.1294

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Abstract

Influence of topography on the variation in mechanical performance of 0.5 wt% multi-layer graphene (MLG)/nanoclay-epoxy nanocomposites has been studied. Three different systems were produced: 0.5 wt% MLG-EP, 0.5 wt% nanoclay-EP, and 0.25 wt% MLG-0.25 wt% nanoclay-EP. The influence of synergistic effect on mechanical performance in case of hybrid nanocomposites is also studied. Various topography parameters studied include maximum roughness height (R_z or R_max),root mean square value (R_q),roughness average (R_a), and surface waviness (W_a).The R_z of as-cast 0.5 wt% MLG, nanoclay, and 0.25 wt% MLG-0.25 wt% nanoclay-EP nanocomposites were 41.43 μm, 43.54 μm, and 40.28 μm, respectively. The 1200P abrasive paper and the velvet cloth decreased the R_zvalue of samples compared with as-cast samples. In contrary, the 60P and 320P abrasive papers increased the R_z values. Dueto the removal of material from the samples by erosion, the dimensions of samples decreased. The weight loss due to erosion was commensurate with the coarseness of abrasive papers. It was observed that MLG is more influential in enhancing the mechanical performance of epoxy nanocomposites than nanoclay. In addition, it was observed that mechanical performance of hybrid nanocomposites did not show a marked difference suggesting that synergistic effects are not strong enough in MLG and nanoclay.

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