Multielectrolyte shear treatment of carbon fibers

Details Multielectrolyte shear treatment of carbon fibers Multielectrolyte shear treatment of carbon fibers

C - Chemistry, Metallurgy

25

D

204/80, 204/43.4

C25D 7/06 (2006.01) C25D 1/04 (2006.01) C25D 9/06 (2006.01) C25D 11/02 (2006.01) C25F 1/00 (2006.01) D01F 11/10 (2006.01) D01F 11/14 (2006.01) D01F 11/16 (2006.01)

Patent

CA 1314514

ABSTRACT Carbon fibers can be surface treated to improve interfacial bonding in a composition comprising said fibers reinforcing a bis-maleimide matrix resin, compris- ing the steps of: moving said fiber, as anode, through a first aqueous electrolytic bath containing an ionized acid base or neu- tral salt, followed by moving said fiber, as anode, through a second elec- trolytic bath containing an ammonium salt, said bath having a pH of at least about 8. Composites comprising the carbon fibers so treated in a bis-maleimide matrix resin have good edge delamination strength. 9542201

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