Quantitative Analysis of the Pore Structure of Expanded Graphite

The characteristics of porous structure of expanded graphite(EG) were studied by using mercury porosimetry and image analysis. Mercury porosimetry may be used to measure the porous structure parameters of the pores under the micrometer quantitative level, and the pores over micrometer quantitative level were studied by image analysis. The processing parameters have an important influence on the porous structure of EG, the more electricity consumption used, the larger pore size and the broader distribution of the pore size; on the other hand, the higher expanding temperature, the larger pore size and the broader distribution of the pore size.