Abstract: Disclosed are cement compositions for applying to honeycomb bodies. The cement compositions can be applied as a plugging cement composition, segment cement, or even as after applied artificial skins or coatings. The cement compositions generally include an inorganic powder batch mixture consisting essentially of inorganic particles having a particle size greater than 100 nm. The cement compositions can further include an organic binder, a liquid vehicle, and one or more optional processing aids. Also disclosed are honeycomb bodies having the disclosed cement compositions applied thereto and methods for making same.

Abstract: A method of making a plugged honeycomb structure includes providing a honeycomb structure having a first end face and a second end face and an array of cells extending between the first end face and the second end face. The method includes bringing a first mask into contact with the first end face and injecting a plugging medium through the first flexible mask into at least some of the cells at the first end face. The method further includes removing the mask from the first end face, followed by contacting the first end face with a heated first solid body, wherein the plugging medium in the first end face is heated.