COMPOSITIONS AND METHODS FOR PLUGGING HONEYCOMB BODIES WITH REDUCED PLUG DEPTH VARIABILITY

摘要

A composition for applying to a honeycomb body includes a refractory filler, an organic binder, an inorganic binder, and a liquid vehicle, wherein the refractory filler, the particle size distribution of the refractory filler, the organic binder, and the inorganic binder are selected such that, when the composition is applied to plug a plurality of channels of the honeycomb body, the plug depth variability is reduced.

主权项

1. A composition for applying to a honeycomb body having a plurality of parallel channels, the composition comprising:
a refractory filler having a particle size distribution; an organic binder; an inorganic binder; and a liquid vehicle; wherein the refractory filler, the particle size distribution of the refractory filler, the organic binder, and the inorganic binder are selected such that, when the composition is applied to plug a plurality of channels of the honeycomb body, a plurality of plugs formed therefrom have an average plug depth and a depth range, such that for channels of a given cross-sectional size, the depth range is less than 30% of the average plug depth.