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公开(公告)号:US08435441B2
公开(公告)日:2013-05-07
申请号:US12179863
申请日:2008-07-25
IPC分类号: C04B33/32
CPC分类号: C04B38/0012 , B01D2279/30 , C04B28/005 , C04B28/24 , C04B35/185 , C04B35/195 , C04B35/478 , C04B38/0006 , C04B41/009 , C04B41/5024 , C04B41/5037 , C04B41/5042 , C04B41/85 , C04B41/87 , C04B2111/00793 , C04B2201/10 , C04B2235/3206 , C04B2235/3217 , C04B2235/3234 , C04B2235/3418 , C04B2235/3463 , C04B2235/3481 , C04B41/4539 , C04B41/4547 , C04B41/4578 , C04B41/5022 , C04B41/5089 , C04B41/455
摘要: Disclosed are compositions for applying to honeycomb bodies. The compositions can be used as plugging mixtures for forming a ceramic wall flow filter. Alternatively, the compositions can be used to form skin coatings on exterior portions of a honeycomb body. The disclosed compositions include an inorganic powder batch composition, an organic binder, a liquid vehicle, and a rheology modifier. The compositions exhibit improved rheological properties, including an increased yield strength and reduced viscosity under shear, which, among various embodiments, can enable the manufacture of sintered phase end plugs having reduced levels of dimple and pinhole formations in the final dried and fired end plugs as well as end plugs having relatively uniform and desired depths. Also disclosed are methods for forming end plugged ceramic wall flow filters from the plugging mixtures disclosed herein.
摘要翻译: 公开了用于施加到蜂窝体的组合物。 该组合物可用作形成陶瓷壁流过滤器的堵塞混合物。 或者,组合物可用于在蜂窝体的外部部分上形成皮肤涂层。 所公开的组合物包括无机粉末批料组合物,有机粘合剂,液体载体和流变改性剂。 组合物表现出改善的流变性能,包括增加的屈服强度和剪切下的降低的粘度,其在各种实施方案中可以使得能够制造在最终干燥和烧制的端塞中具有降低的凹坑和针孔形成水平的烧结相端塞,例如 以及具有相对均匀和期望深度的端塞。 还公开了从本文公开的堵塞混合物形成端塞陶瓷壁流动过滤器的方法。