Claims
- 1. A method of producing a chemically reactive substrate which comprises the steps of:
- providing a dispersion of polytetrafluoroethylene (PTFE);
- providing catalyst particles;
- mixing the PTFE dispersion and the catalyst particles to form an slurry;
- drying the slurry and forming a powder;
- lubricating the powder with a substantially non-combustible lubricant to form a paste;
- forming the paste into an element;
- heating and expanding the element into a porous expanded PTFE matrix comprising polymeric nodes interconnected by fibrils, the catalyst particles being captivated within the matrix;
- forming the expanded PTFE matrix into the substrate, wherein the PTFE matrix is sufficiently porous to allow the catalyst particles to react with the components of a fluid.
- 2. The process of claim 1 which further comprises:
- providing catalyst particles selected from a group consisting of manganese dioxide (MnO.sub.2), copper oxide, titanium dioxide, platinum, palladium, or alumina.
- 3. The process of claim 1 which further comprises:
- adhering the substrate to a core material; and
- mounting the substrate and core material so that fluid flow occurs across the surface of the substrate.
- 4. The process of claim 3 which further comprises:
- providing a core material that can be pleated; and
- pleating the substrate and the core material.
- 5. The process of claim 1, wherein said catalyst particles comprise an ozone decomposing catalyst, and the substrate is adapted to be employed in a fluid stream to remove ozone therefrom.
RELATED APPLICATIONS
This application is a division of application Ser. No. 08/431,642 filed May 2, 1995, (status: allowed) which is a Continuation-in-Part application of U.S. patent application Ser. No. 08/204,910 filed Mar. 2, 1994 now abandoned.
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Divisions (1)
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431642 |
May 1995 |
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Continuation in Parts (1)
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204910 |
Mar 1994 |
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