公开(公告)号：US09079798B2

公开(公告)日：2015-07-14

申请号：US14492584

申请日：2014-09-22

Applicant: Dow Global Technologies LLC

Inventor： Daniel Grohol ,  Chan Han ,  Aleksander J. Pyzik

IPC: C04B35/00 ,  B01J21/00 ,  B01J21/04 ,  B01J20/00 ,  B01J23/02 ,  C04B35/195 ,  C04B35/185 ,  C04B41/50

CPC classification number: C04B35/195 ,  C04B35/185 ,  C04B41/5025 ,  C04B2235/3463 ,  C04B2235/3481

Abstract: Porous composites of mullite and cordierite are formed by firing an acicular mullite body in the presence of a magnesium source and a silicon source. In some variations of the process, the magnesium and silicon sources are present when the acicular mullite body is formed. In other variations, the magnesium source and the silicon source are applied to a previously-formed acicular mullite body. Surprisingly, the composites have coefficients of linear thermal expansion that are intermediate to those of mullite and cordierite alone, and have higher fracture strengths than cordierite at a similar porosity. Some of the cordierite forms at grain boundaries and/or points of intersection between mullite needles, rather than merely coating the needles. The presence of magnesium and silicon sources during acicular mullite formation does not significantly affect the ability to produce a highly porous network of mullite needles.

Abstract translation: 莫来石和堇青石的多孔复合材料是通过在镁源和硅源的存在下焙烧针状莫来石体形成的。 在该方法的一些变型中，当形成针状莫来石体时，存在镁和硅源。 在其它变型中，将镁源和硅源施加到预先形成的针状莫来石体上。 令人惊奇的是，复合材料的线性热膨胀系数与莫来石和堇青石单体的中间相似，并且具有比类似孔隙率的堇青石更高的断裂强度。 在莫来石针之间的晶界和/或交叉点处的一些堇青石形式，而不仅仅是涂覆针。 在针状莫来石形成过程中镁和硅源的存在并不会显着影响产生莫来石针的高度多孔网络的能力。

公开(公告)号：US20140319742A1

公开(公告)日：2014-10-30

申请号：US14362483

申请日：2012-12-10

Applicant: Dow Global Technologies LLC

Inventor： Aleksander J. Pyzik ,  Sharon Allen ,  Peter C. Saucier

IPC: C04B28/00 ,  C04B37/00

CPC classification number: C04B28/001 ,  B29L2031/608 ,  C04B35/185 ,  C04B37/00 ,  C04B37/005 ,  C04B38/0006

Abstract: Skins and/or adhesive layers are formed on a porous ceramic honeycomb by applying a layer of a cement composition to a surface of the honeycomb and firing the cement composition. The cement composition contains a water-swellable clay, high aspect inorganic filler particles and water, and are nearly or completely devoid of particles smaller than 100 nm and a cellulosic polymer.

Abstract translation: 通过将一层水泥组合物施加到蜂窝体的表面并焙烧该水泥组合物，在多孔陶瓷蜂窝上形成表皮和/或粘合剂层。 水泥组合物含有水溶胀性粘土，高方位无机填料颗粒和水，几乎或完全没有小于100nm的颗粒和纤维素聚合物。