| abstract |
The present invention provides a method for manufacturing a honeycomb structure having sufficient partition wall strength, low pressure loss, thin partition walls, high collection efficiency, and high purification efficiency. [MEANS FOR SOLVING PROBLEMS] Filling fine particles having an average particle diameter of 5 to 50 μm are added to the large-diameter pores of a primary fired body having a partition wall in which a large number of large pores having an average pore diameter of 100 to 300 μm are formed. After having been filled with the containing slurry for filling, it is fired and has a porous partition wall in which a large number of small pores having a small average pore diameter as compared with the large pores are formed. A first step of obtaining a secondary fired body in which a plurality of cells communicating between two end faces are partitioned, and the cells of the secondary fired body are plugged inside either end face or cell The partition wall 4 and the plugging portion 10 are formed, and the partition wall 4 has a thickness of 76.2 to 177.8 μm, an average pore diameter of 8 to 30 μm, and a porosity of 10 to 35%. And a second step of obtaining the honeycomb structure 100. A method for manufacturing a honeycomb structure. [Selection] Figure 3 |