The samples of epoxy resin-PEO400 IPN containign NaSCN salts were prepared in electric field. The conductivity was measured by impedance method. Experiment results show that the conductivity increased with increasing electric field strength in the regio nof E=0 E=20v/cm at a given temperature, and reached a maximum value, which is greater more than one order of magnitude than that of no field. After this peak, the conductivity decreased rapidly with the electric field strength above 20v/cm. The conductivity enhancement was explained by the molecular micro-structure orientation alogn the directio nof electric field. This presented a favorable passageway for ion migration. The conductivity decrease may be due to micro-structure damage by stronger field.
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