Coated absorbent fibers
AssigneeThe Board of Trustees of the University of Illinois
InventorsJames Economy, Michael Daley
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Abstract
Fiber material for adsorbing contaminants is prepared according to the steps of preparing coating a glass or mineral fiber substrate with a resin, cross-linking the resin, heating the coated fiber substrate and resin to carbonize the resin, and exposing the coated fiber substrate to an etchant to activate the coated fiber substrate.
Claims27
A method of making a fiber material for adsorption of contaminants, comprising the steps of:
- coating a fiber substrate with a resin;
- cross-linking the resin with a cross-linking agent;
- heating the coated fiber substrate to carbonize the resin;
- and,
- exposing the coated fiber substrate to an etchant to activate the resin;
- wherein the fiber substrate comprises glass or mineral, and wherein the fiber material is regenerable by heating.
A method of making an activated fiber material for the adsorption of contaminants, comprising the steps of:
- coating a fiber with a resin;
- cross-linking the resin;
- and
- simultaneously carbonizing and activating the fiber material by heating the coated and cross-linked fiber in substantially pure nitrogen;
- wherein the fiber substrate comprises glass or mineral, and wherein the fiber material is regenerable by heating.
A method of making a fiber for adsorption of contaminants comprising the steps of:
- coating a substrate with a resin;
- cross-linking the resin with a cross-linking agent;
- carbonizing the resin;
- and
- activating the resin with an etchant being selected from the group consisting of ammonia, and air;
- wherein the fiber substrate comprises glass or mineral, and wherein the fiber material is regenerable by heating.
Dependencies are inferred from the claim text.