Damage tolerant light absorbing material

Details Damage tolerant light absorbing material Damage tolerant light absorbing material

1992-07-20

1993-09-07

Ben, Loha

Optical: systems and elements

Glare or unwanted light reduction

With absorption means

359350, 359361, 359885, 359888, G02B 2700

Patent

active

052434648

ABSTRACT:
A light absorbing article comprised of a composite of carbon-bonded carbon fibers, prepared by: blending carbon fibers with a carbonizable organic powder to form a mixture; dispersing the mixture into an aqueous slurry; vacuum molding the aqueous slurry to form a green article; drying and curing the green article to form a cured article; and, carbonizing the cured article at a temperature of at least about 1000.degree. C. to form a carbon-bonded carbon fiber light absorbing composite article having a bulk density less than 1 g/cm.sup.3.

REFERENCES:
patent: 4355910 (1982-10-01), Quick et al.
patent: 4577924 (1986-03-01), Mathis
patent: 4621898 (1986-11-01), Cohen
patent: 4793668 (1988-12-01), Longstaff
patent: 4885114 (1989-12-01), Gordon et al.
G. C. Wei, et al., "Development and Characterization of Carbon-Bonded Carbon Fiber Insulation for Radioisotope Space Power Systems" ORNL/TM-9381 Published by Oak Ridge National Laboratory, Oak Ridge, Tennessee-Jun. 1985.

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