Composite membranes
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United States of America Patent
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Dec 27, 1994
Issued Date -
N/A
app pub date -
Mar 24, 1993
filing date -
May 24, 1988
priority date (Note) -
Expired
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Abstract
A composite membrane comprises an inorganic support having interstices and porous inorganic films of sintered non-metallic particles carried by the support and bridging the interstices thereof. The support is preferably a woven metal mesh, with the films substantially coplanar with the support. The films may be formed by applying a suspenion of refractory particles in a polymer solution to bridge the interstices of the support, and heating the films to partly sinter the particles. Since the films are in compression at ambient temperature, any cracks that may be formed by damage to the composite membrane tend not to propagate.
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