Composite membranes
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United States of America Patent
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Feb 25, 1997
Issued Date -
N/A
app pub date -
Dec 6, 1994
filing date -
May 24, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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 suspension 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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