公开(公告)号：US20030143130A1

公开(公告)日：2003-07-31

申请号：US10307277

申请日：2002-12-02

Applicant: C.R.F. SOCIETA CONSORTILE PER AZIONI

Inventor： Gianmarco Boretto ,  Massimo Debenedetti ,  Diego Marzorati

IPC: B01D053/34 ,  B01D053/00

CPC classification number: B01D39/2075 ,  F01N3/022 ,  F01N3/0222 ,  F01N13/0097 ,  Y02T10/20

Abstract: A filtering body is obtained for particulate of diesel engines, consisting of a ceramic foam that is produced, starting from a ceramic-material powder-based suspension (slurry), by preparing a preform of polymeric foam material and impregnating the said preform with the ceramic-powder slurry so as to distribute the slurry evenly on the preform, and by then subjecting the body thus obtained to a thermal cycle of sintering in such a way as to pyrolyze the polymeric material and obtain a high-porosity ceramic material. The ceramic-material powder is chosen from among mullite powder, alumina powder, zirconia powder, and mixtures thereof, having very high purity, controlled grain-size, and a high specific surface.

Abstract translation: 获得用于柴油发动机颗粒的过滤体，该陶瓷泡沫由陶瓷材料粉末基悬浮液（浆料）开始，通过制备聚合物泡沫材料的预成型体并用陶瓷浸渍所述预制件 将浆料均匀地分布在预成型体上，然后使由此获得的主体经受热循环烧结，以使聚合物材料热解并获得高孔隙率陶瓷材料。 陶瓷材料粉末选自莫来石粉末，氧化铝粉末，氧化锆粉末及其混合物，其具有非常高的纯度，受控的粒度和高比表面积。