Method for making carbon microfibers

Details Method for making carbon microfibers Method for making carbon microfibers

1984-06-21

1985-11-26

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

4234472, 423448, 423460, C01B 3102, D01F 912

Patent

active

045553939

ABSTRACT:
A continuous fiber composite having carbon microfibers dispersed in the resin filling the interstices between the continuous fibers to enhance the transverse properties of the composite. The carbon microfibers are made by soaking carbon fibers in an intercalating acid solution comprising a mixture of fuming nitric and sulfuric acid to weaken the intercrystallite bonds. Gentle stirring of solution separates the carbon microfibers from the host fibers. The microfibers are then separated from the intercalating acid solution and washed to remove the residual acid.

REFERENCES:
patent: 4073869 (1978-02-01), Kalnin
patent: 4269876 (1981-05-01), Lind et al.
Harris et al., "Journal of Material Science" vol. 4, 1969, pp. 432-438.
Donnet et al., "11th Biennial Conference on Carbon" Jun. 4-8, 1973, pp. 172-173.

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