HONEYCOMB SEGMENTS JOINED BODY FOR DPF AND BONDING MATERIAL COMPOSITION FOR THE JOINED BODY

摘要

Two or more honeycomb segments used for a diesel exhaust gas purifying filter (DPF) are integrated by a bonding material composition which is mainly composed of a filler having a specific heat of not less than 550 J/kg K and a colloidal silica. A bonding material layer composed of the bonding material composition has a heat capacity per unit volume of not less than 1.6 J/cm³ K at room temperature.