| 摘要 |
A device ( 10 ) for treatment of exhaust gases includes a housing ( 12 ); a fragile structure ( 18 ) resiliently mounted within the housing ( 12 ); and a non-intumescent mounting mat ( 20 ) disposed in a gap between the housing ( 12 ) and the fragile structure ( 18 ). The mounting mat ( 20 ) comprises melt-formed, leached glass fibers high in silica content and exerts a minimum holding pressure for holding the fragile structure ( 18 ) within the housing ( 12 ) of one of (i) at least 10 kPa after 1000 cycles of testing at a hot face temperature of 900° C., a gap bulk density of between 0.3 and 0.5 g/cm<SUP>3</SUP>, and a percent gap expansion of 5 percent, and (ii) at least 50 kPa after 1000 cycles of testing at a hot face temperature of 300° C., a gap bulk density of between 0.3 and 0.5 g/cm<SUP>3</SUP>, and a percent gap expansion of 2 percent. |
