Investigation of mechanochemical green synthesis of exfoliated graphite nano-platelets on conductivity and its nonlinear properties based on zinc oxide
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We investigated the effect of water and its amount on conductivity of exfoliated graphite nano-platelets (XGnP) under mechanochemical methods. Results showed that, by increasing water content in the system, conductivity of the product increased from 109 to 219 S/cm and the nonlinear coefficient decreased from 14.5 to 10.5. Electrophysical studies of the samples prepared from zinc oxide-XGnP-high density polyethylene showed strong dependency of nonlinearity and breakdown voltage to the XGnP and zinc oxide content in the mixture. Accordingly, by increasing the XGnP content from 1 to 4% at a constant zinc oxide content (80%), the nonlinear coefficient decreased from 10.5 to 4.1.
The authors would like to acknowledge the financial support of Iran National Science Foundation and the Office of Vice Chancellor in Charge of Research of University of Tabriz.