MANUFACTURING METHOD OF DIESEL PARTICULATE FILTER AND DIESEL PARTICULATE FILTER MANUFACTURED BY THE METHOD

摘要

PURPOSE: A diesel particle filter and a manufacturing method thereof are provided to reduce the degradation of the mechanical property which includes cracking etc when filtering the exhaust gas which has high temperature for the long period by having the low thermal expansion coefficient. CONSTITUTION: A manufacturing method of the diesel particle filter comprises the following steps: a step of mixing (S101) a cordierite, a walnut, a graphite, a binder, a polyvinyl alcohol, a triethyleneglycol and a lubricant; a step of molding (S103) the mixture; a step of heating (S105) up the molded product; a step of plasticizing the heated molded product (S107). The plasticizing is performed by inserting the carbon dioxide or nitrogen as 10 L/min. [Reference numerals] (AA) Start; (BB) End; (S101) Step of producing mixture; (S103) Step of molding; (S105) Step of heating; (S107) Step of plasticizing