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1. 发明申请

WO9946028A8 SUPPORT ELEMENT FOR FRAGILE STRUCTURES SUCH AS CATALYTIC CONVERTERS 审中-公开
标题翻译：用于脆性结构的支撑元件如催化转换器
公开(公告)号：WO9946028A8
公开(公告)日：2000-10-19
申请号：PCT/US9903461
申请日：1999-02-18
申请人： UNIFRAX CORP
发明人： FERNANDO JOSEPH A , TEN EYCK JOHN D , LACKI THOMAS S
IPC分类号： B01D53/86 , B01D53/94 , B01J19/24 , B01J33/00 , C04B35/80 , F01N3/021 , F01N3/28 , B01D50/00 , B01D53/34 , F01N3/10
CPC分类号： B01D53/9454 , F01N3/0211 , F01N3/2853 , F01N2350/02 , Y02T10/20 , Y02T10/22
摘要： A support element (20) is disposed between a housing (12) and a fragile structure (18) resiliently mounted within the housing (12). The support element (20) includes an integral, substantially non-expanding ply or layer of melt-formed ceramic fibers containing at least alumina and silica. The fibers have an average diameter ranging from about 1 micron to about 14 microns and have been heat treated by treating the fibers at a temperature of at least 1100 DEG C over a 30-minute period, or at a temperature of at least 990 DEG C for a period of at least on hour. The resultant heat treated fibers exhibit suitable handling properties, have at least about 5 to about 50 percent crystallinity as detected by x-ray diffraction, and have a crystallite size of from about 50 A to about 500 A. The resultant support element (20) provides a minimum residual pressure for holding the fragile structure (18) within the housing (12) after 200 cycles of testing at 900 DEG C of at least 4 psi. Such a support element (20) may be used in devices for the treatment of exhaust gases, such as catalytic converters (10), diesel particulate traps and the like. A method of mounting a fragile structure (18) in such a device is also provided.
摘要翻译：支撑元件（20）设置在壳体（12）和弹性地安装在壳体（12）内的脆弱结构（18）之间。支撑元件（20）包括至少含有氧化铝和二氧化硅的熔融成形陶瓷纤维的一体的，基本上不膨胀的层或层。纤维的平均直径为约1微米至约14微米，并且通过在至少1100℃的温度下在30分钟的时间内或在至少990℃的温度下处理纤维进行热处理至少一小时的时间。所得的热处理纤维表现出合适的处理性能，通过X射线衍射检测具有至少约5至约50％的结晶度，并且具有约50A至约500A的微晶尺寸。所得的支撑元件（20）在900℃下测试至少4psi的200个循环后，提供用于将脆弱结构（18）保持在壳体（12）内的最小残余压力。这种支撑元件（20）可用于处理废气的装置中，例如催化转化器（10），柴油颗粒捕集器等。还提供了将脆弱结构（18）安装在这种装置中的方法。

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