Honeycomb structured body

摘要

An object of the present invention is to provide a honeycomb structured body which is free from damages even upon occurrence of a local temperature change therein and is also highly resistant to thermal shock and vibrations because of its excellent strength and durability. The honeycomb structured body of the present invention is a honeycomb structured body in which plural pillar-shaped honeycomb units are bonded to one another through sealing material layers, each unit having in the longitudinal direction a large number of cells placed in parallel with a cell wall therebetween. Herein, a cross-sectional area of the honeycomb unit on a cross-section perpendicular to the length direction is in the range of 5 to 50 cm 2 , the honeycomb unit includes inorganic fibers and/or whiskers in addition to inorganic particles, and a Young' s modulus of the honeycomb unit is in the range of 50 to 150% of a Young's modulus of the sealing material layer.