Process for the preparation of carbon fiber reinforced carbon co

Details Process for the preparation of carbon fiber reinforced carbon co Process for the preparation of carbon fiber reinforced carbon co

1995-12-05

1997-12-09

Weisberger, Richard

Coating processes

Heat decomposition of applied coating or base material

Coating decomposed to form carbide or coating carbonized

427227, 162 69, 162 7, 162 72, 264 293, 264 295, 264 291, 4234472, 4234477, 428136, 428179, B05D 302

Patent

active

056958161

ABSTRACT:
The present invention aims at preventing or reducing the lowering in mechanical characteristics of a carbon fiber reinforced carbon composite due to stress orientation caused by the use of a thermosetting resin as a carbon matrix precursor resin to thereby obtain a carbon fiber reinforced carbon composite improved in mechanical characteristics, and for attaining this aim, provides a process for the preparation of a carbon fiber reinforced carbon composite which comprises impregnating a carbon fiber with a bismaleimide-triazine copolymer resin instead of the sizing agent and thermoplastic resin which have been used conventionally and heating the resulting impregnated carbon fiber in a non-oxidizing atmosphere to carbonize or graphitize the resin.
Further, the present invention provides also a process for the preparation of a carbon fiber reinforced carbon composite which is characterized in that a bismaleimide-triazine copolymer resin is used as the sizing agent to be applied prior to the impregnation of a carbon fiber with a thermosetting agent to thereby prevent or reduce the lowering in mechanical characteristics due to stress orientation of the carbon matrix formed or derived from the conventional thermosetting resin.

REFERENCES:
patent: 4456712 (1984-06-01), Christie et al.

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