PROCESS FOR PREPARATION OF RETICULATED VITREOUS CARBON OFCONTROLLED PORE SIZE AND ENHANCED ELECTRICAL CONDUCTIVITY

摘要

The invention relates to the control of pore size and enhancement of electrical conductivity in reticulated vitreous carbon (RVC) prepared from open cell polyurethane foam pre-cursors. By controlling the pore size, it is possible to prepare various grades of RVC, in terms of pores per inch (ppi). The various proir arts in which RVC is prepared from open cell polyurethane foams do not deal with the preparation of various grades of RVC by controlling the pore size. RVC is a commonly used electrode in electrolytic cells. The lower the electrical resistivity, higher the performance of the electrode would be. In the present invention, we use the composites of open cell polyurethane foams with montmorillonite based clays, as the precursor foam. This composite foam is pyrolysed to get RVCs of tailored pore sizes and enhanced electrical conductivity.