Secondary matrix reinforcement using carbon microfibers

Details Secondary matrix reinforcement using carbon microfibers Secondary matrix reinforcement using carbon microfibers

1982-10-01

1984-09-18

Bell, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

428408, 428903, C08K 700, C08K 704

Patent

active

044725418

ABSTRACT:
A continuous fiber composite having carbon micro-fibers 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.

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P. Kwizers et al., "Studies of Microstructure of Intercalated Graphite Fibers" Mit Research in Materials, Annual Report, Jan. 1982.

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