Aerogel matrix composites

Details Aerogel matrix composites Aerogel matrix composites

1992-06-26

1994-04-26

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

2523151, 428297, 501 12, D04H 158

Patent

active

053065557

ABSTRACT:
An aerogel matrix composite of a bulk aerogel and fibers dispersed within the bulk aerogel, and a method for preparing the aerogel matrix composite having the steps: Making a first solution by mixing a metal alkoxide with an alcohol; making a second solution by mixing an alcohol, water, and base; mixing the first and second solutions to form a third solution and mixing fibers therewith; aging the third solution containing the fibers to obtain a gelled composition; completely submerging the gelled composition in a liquid suitable for supercritical drying; heating and pressurizing the gelled composition at a rate between about 75.degree. C. per hour to about 500.degree. C. per hour until at least the critical temperature and pressure of at least the major liquid in the gel composition are reached; maintaining at least the critical temperature and pressure for a time sufficient to transform the liquid to a supercritical fluid; and reducing the pressure and temperature to ambient conditions by reducing the pressure at a rate above 500 psi per hour, and maintaining temperature above at least the critical temperature until the critical pressure transition is passed.

REFERENCES:
patent: 2808338 (1957-10-01), Bruno et al.
patent: 2945817 (1960-07-01), Goldblum
patent: 3629116 (1971-12-01), Gartner et al.
patent: 3869334 (1975-03-01), Hughes et al.
patent: 4327065 (1982-04-01), von Dardel et al.
patent: 4402927 (1983-09-01), von Dardel et al.
patent: 4432956 (1984-02-01), Zarzycki et al.
patent: 4447345 (1984-05-01), Kummermehr et al.
patent: 4610863 (1986-09-01), Tewari et al.
patent: 4667417 (1987-05-01), Graser et al.
patent: 4911775 (1990-03-01), Kuma et al.
Aerogels; Jochen Fricke; Scientific American; May 1988; pp. 92-97.
Fibre Reinforce Glass and Ceramic Composites; A. R. Hyde; GEC Journal of Research, vol. 6; 1; 1988, pp. 44-49.
Aerogels and Related Porous Materials; H. D. Gesser et al; Chem. Rev.; 89; 1989; pp. 765-788.
Status of Continuous Fiber-Reinforced Ceramic Matrix Composite Processing Technology; J. R. Strife et al; Ceram. Eng. Sci. Proc.; 11[7-8]; 1990; pp. 871-919.
Fabrication of Particulate, Platelet, Whisker and Continuous Fibre Reinforced Glass, Glass Ceramic and Ceramic Materials; A. R. Hyde et al; Br. Ceram. Proc.; 45; (Fabr. Technol.); 1989; pp. 221-227.
Aerogels, a Source of Adsorbents, Insulators, Catalysts and Ceramics; S. J. Teichner; Revue de Physique Appliquee; Colloque C4; Supplement au n.degree.4; Tome 24; Avril 1989; pp. C4-1 through C4-6.
Advanced Composites for High Temperatures (A Study on a Suitable Fabrication Process); E. Fitzer et al; Metals Materials and Processes; vol. 2; No. 3; 1990; pp. 179-200.

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