期刊
MACROMOLECULAR MATERIALS AND ENGINEERING
卷 298, 期 6, 页码 670-678出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201200123
关键词
epoxy; fracture toughness; mechanical properties; nanocomposites; nanoparticles
The effect of carbon nanoreinforcements of different shapes on the mechanical properties of epoxy-based composites is studied. It is found that while nanodiamond and fibrous (carbon nanotube and nanofiber) particles provided better tensile properties, platelet (graphene oxide) nanoreinforcements lead to a considerable increase in the fracture toughness of the composites. The trend of the results is explained on the basis of the geometrical characteristics of the reinforcements. The accuracy of several micromechanics-based criteria for predicting the Young's modulus of composites is investigated for different nanoparticle shapes. The state of dispersion of nanofillers and the fracture surface features of all composites are examined using TEM and SEM.
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