Characterization of pore texture of Novolac hyperporous by non-intrusion mercury prosimetry

Novolac hyperporous materials can be either crushed or invaded by mercury during mercury prosimetry experiments. Two samples that have different concentration were examined. It was been shown here that sample with lower concentration exhibit the two volume variation mechanisms successively, compaction followed by intrusion, when submitted to mercury prosimetry and that real result could be obtained by applying Pirard’s collapse model below the pressure of transition Pt and Washburn’s intrusion theory above Pt. sample with higher concentration just shown the collapse under mercury pressure and no transient pressure could be observed. Thus, an accurate data analysis requires prior determination of the mechanism leading to the volume variation recorded as a function of the pressure. The position of the change of mechanism from collapsing to intrusion is directly related to the Novolac concentration of primary solution

کلیدواژه ها:

Novolac hyperporous ، mercury prosimetry ، collapse equation