Influence of Injection Conditions on the Mechanical Property of MWCNTs/ PC Nanocomposites

Abstract:

The melting mixing was applied in the preparation of Multiwalled carbon nanotubes/Polycarbonate (MWCNTs/PC) nanocomposites. MWCNTs/PC nanocomposites with different MWCNTs contents were prepared under different injection conditions. The mechanical property of nanocomposites was comparatively investigated. The results demonstrated that: the tensile property of the nanocomposites was slightly improved by MWCNTs content increasing; but as the MWCNTs contents went on to increase to 10wt%, the tensile strength and bending strength were obviously decreased about 35% and 47%, respectively, but the impact strength and hardness were increased. The center hardness of MWCNTs/PC nanocomposites was greater than the surface hardness. Besides, the changes on the mechanical properties of the nanocomposites were studies by changing the injection conditions. By Scanning Electron Microscopy (SEM) observation, the microstructure and morphology of nanocomposites were analyzed, revealing that the center of the nanocomposite distributed more MWNTs, and the injection conditions would affect the MWNTs’ dispersion in the matrix and the interfacial interaction between MWCNTs and PC.

• Periodical: Advanced Materials Research (Volume 983)
• Pages: 94-98
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.983.94
• Online since: June 2014
• Authors: Li Jun Wang*, Jian Hui Qiu, Eiichi Sakai
• Keywords: Injection Speed, Injection Temperature, Mechanical Property, Multiwalled Carbon Nanotubes/Polycarbonate, Nanocomposite

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