Comparison of DC conductivity of the synthetic ester and a composite of cellulose, synthetic ester, water nanoparticles

摘要

In the paper presents compares the DC conductivity of the synthetic ester MIDEL 7131 and electrical pressboard Weidman companies impregnated with the same synthetic ester with a different moisture contents. Thee study of thee conductivity for both materials were made for the measuring temperature in the range of 20°C to 80°C and measuring voltages 10 V. In the Arrhenius plots for both materials were been performed linear approximations off experimental results. On the basis of Arrhenius plots for the ester and the sample for the pressboard, the value of the activation energy of the DC conductivity and the determination coefficient R2 was determined. The value of the determination coefficient close to one indicates the high accuracy of conductivity measurements. Comparing the activation energy value of the DC conductivity for synthetic ester and pressboard impregnated with the same ester, it can be concluded that the conduction in pressboard is not caused by the presence of ester in the pressboard.