As the environmental temperature decreased to −40 °C, the current values of all three groups of composites showed a decreasing trend, which was mainly related to the decrease in the energy of charge carriers at low temperatures [ 49 ].
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The Influence of the Dispersion and Covalent Functionalization of CNTs on Electrical Conduction Under an Electric Field in LDPE/CNT Composites.
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The sentences
The current of all three groups of composites exhibited an increasing trend with the applied voltage; however, it is evident that the I–V curves of these three groups have obvious differences.