EP 0251491 B1 19920701 - MULTI-ELECTROLYTE TREATMENT OF CARBON FIBRES TO MODIFY SHEAR RESISTANCE
Title (en)
MULTI-ELECTROLYTE TREATMENT OF CARBON FIBRES TO MODIFY SHEAR RESISTANCE
Publication
Application
Priority
US 86873786 A 19860530
Abstract (en)
[origin: EP0251491A1] Carbon fibers can be surface treated to improve interfacial bonding in a composition comprising said fibers reinforcing a bis-maleimide matrix resin, comprising the steps of: moving said fiber, as anode, through a first aqueous electrolytic bath containing an ionized acid base or neutral salt, followed by moving said fiber, as anode, through a second electrolytic 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.
IPC 1-7
C25D 1/04; C25D 7/06; C25D 9/06; C25D 11/02; C25F 1/00; D01F 11/10
IPC 8 full level
B29C 70/10 (2006.01); B29C 70/06 (2006.01); C08J 5/06 (2006.01); C25D 1/04 (2006.01); C25D 7/06 (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); D06M 10/00 (2006.01); D06M 101/00 (2006.01); D06M 101/40 (2006.01)
CPC (source: EP)
D01F 11/14 (2013.01); D01F 11/16 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0251491 A1 19880107; EP 0251491 B1 19920701; AT E77854 T1 19920715; CA 1314514 C 19930316; DE 3780092 D1 19920806; DE 3780092 T2 19930218; JP H0242939 B2 19900926; JP S636162 A 19880112
DOCDB simple family (application)
EP 87304726 A 19870528; AT 87304726 T 19870528; CA 538319 A 19870529; DE 3780092 T 19870528; JP 13192787 A 19870529