Ceramic filters formed from photocurable pre-ceramic polymers
AssigneeGlobal Strategic Materials, LLC
InventorsEdward J.A. Pope, Jozsef Hepp, Kenneth M. Kratsch
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Abstract
A method for making high temperature filter media includes the steps of melt-spinning a plurality of fibers of pre-ceramic thermoplastic polymer to form a non-woven textile web of the fibers, curing and cross-linking the thermoplastic polymer to a thermo-set polymer and thermally decomposing the thermo-set polymer to ceramic.
Claims3
A method for making high temperature filter media comprising melt-spinning a plurality of fibers of pre-ceramic thermoplastic polymer to form a non-woven textile web of said fibers, curing and cross-linking said thermoplastic polymer to a thermo-set polymer, and thermally decomposing said thermo-set polymer to ceramic.
A high temperature filter media comprising a non-woven textile web of a plurality of fibers of bonded melt-spun pre-ceramic thermoplastic polymer cured to a cross-linked thermo-set polymer and thermally decomposed to ceramic.
A high temperature composite ceramic filter comprising first and second sheets, said second sheet having a plurality of pleats defined by wall segments extending in zig-zag manner between pleat tips at axially extending bend lines, the pleat tips on one side of said second sheet being in contiguous relation with said first sheet to define axial flow channels, at least one of said sheets comprising filter media comprising a web of a plurality of melt-spun fibers of bonded preceramic thermoplastic polymer cured to a cross-linked thermo-set polymer and thermally decomposed to ceramic.
Dependencies are inferred from the claim text.