Study on the relationship between aggregation structure and flow rate depending on extrusion temperature at complex mold of (activated carbon/polymer binder)

Abstract

As the need for miniaturization in water purification filter increases, the development of filter media for single filtration with multiple function was strongly required. In this study, the molded activated carbon composed of single unit was manufactured by extrusion-sintering process, and then the flow rate, density and porosity were investigated using the molded activated carbon manufactured at various extrusion temperature. We confirmed that it was possible to manufacture the single unit-molded activated carbon when the extrusion temperature was 140∼230 oC more than 133 oC being of polymer binder melting point, and the optimal extrusion temperature for the molded activated carbon with maximum flow rate was 170 oC since the molded activated carbon had low density and high through porosity. Also we confirmed that the flow rate through the molded activated carbon was strongly dependent upon through pore porosity compared to total porosity for the molded activated carbon.