Claims
- 1. A process for producing flexible, mechanically stable organic polymer condensate containing formaldehyde composite aerogels, said aerogels containing intermixed fibers selected from the group consisting of glass, carbon, plastic, boron and aramid fibers, including:
- providing a mold with a mixture of an aerogel solution and a quantity of fibers;
- processing the mixture to form a gel; and
- extracting fluid from the gel.
- 2. The process of claim 1, wherein extracting fluid from the gel is carried out by supercritical extraction, whereafter the aerogel is removed from the mold.
- 3. The process of claim 1, wherein extracting fluid from the gel is carried out by supercritical extraction prior to removal from the mold or by removing the gel from the mold and then extracting fluid from the gel.
- 4. The process of claim 1, wherein extracting fluid from the gel is carried out by supercritical extraction by one of the group consisting of high temperature supercritical fluid extraction, liquid CO.sub.2 exchange followed by CO.sub.2 supercritical extraction, and exchange of H.sub.2 O with organic solvent followed by either high temperature supercritical fluid extraction, or liquid CO.sub.2 exchange followed by CO.sub.2 supercritical extraction.
- 5. The process of claim 1, additionally including providing the quantity of fibers from intermitted fibers of different compositions.
Parent Case Info
This Application is a division of application Ser. No. 09/017,035 filed Feb. 2, 1998.
Government Interests
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.
US Referenced Citations (8)
Divisions (1)
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Number |
Date |
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Parent |
017035 |
Feb 1998 |
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