| 摘要 |
There is provided a substrate ( 1 ) capable of carrying uniformly dispersed, finely divided, particulate, solid particles, e. g., catalyst particles ( 10 ) and sustaining temperatures in excess of 1200 degrees F. The substrate comprises a top layer ( 2 ) for containing the particles ( 10 ) and composed of quartz fibers ( 4 ) with an average diameter of between about 0.1 and 4 microns and about 0 to 13% of microglass fibers having a softening point of about 1000 degrees F. A support layer ( 3 ) is composed of the fibers of the top layer and, in addition, bulk refractory, e. g., ceramic, fibers ( 6 ) having and average diameter of about 1 to 4 microns and 0 to 50% of chopped e-glass fiber ( 7 ). A method for producing the substrate is provided that includes wet laying the top and bottom layers in spaced apart times so that the juncture ( 8 ) between the two layers has intermingled fibers whereby the consolidated layers are not easily separated.
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