| 摘要 |
<p>Disclosed herein is a method for preparing a silicon carbide segment for a honeycomb ceramic filter as a diesel particulate filter (DPF) by conducting drying, perforating, plugging, and sintering processes for an extruded body cut into a segment having a predetermined size, wherein a sealant, which will melt and adhere to corners of cells in the sintering process, to seal the cell corners, is applied to partition walls of the segment at opposite ends of the segment in the plugging process. In the method, a material (sealant), which will melt and adhere to the corners of cells in a sintering process, to seal the cell corners, is applied to partition walls at opposite ends of the segment in a plugging process, so that it is possible to prevent noxious particulate matter contained in an exhaust gas from being discharged to the atmosphere without being filtered out due to the existence of fine gaps formed between the plugs and the partition walls or the non-existence of plugs. It is also possible to enhance the bonding force of the plugs to the cell partition walls, and thus to prevent the plugs from being separated due to an external force such as impact or vibration.</p> |
