초록 ▼

Novel carbon-carbon laminate composite materials capable of significantly increased strengths in at least one predetermined direction of load are disclosed. The composites can comprise plies of resin impregnated woven carbon or graphite cloth material in combination with resin impregnated carbon or

Novel carbon-carbon laminate composite materials capable of significantly increased strengths in at least one predetermined direction of load are disclosed. The composites can comprise plies of resin impregnated woven carbon or graphite cloth material in combination with resin impregnated carbon or graphite filament unidirectional tape or can be fabricated from the unidirectional tape alone. Generally the unidirectional reinforcement of the tape plies provides higher strengths and moduli in specific directions which can be controlled during lay up of parts. The processes for obtaining the beneficial increase strength of unidirectional tape ply materials while avoiding fabrication problems resulting therefrom are also disclosed.

대표청구항 ▼

The process for producing carbon-carbon structural laminates which comprise plies of unidirectional resin impregnated carbon or graphite filament tape comprising the steps of: (a) laying up the plies of the carbon-carbon material in a manner such that the fibers of said filament tape plies are laid

The process for producing carbon-carbon structural laminates which comprise plies of unidirectional resin impregnated carbon or graphite filament tape comprising the steps of: (a) laying up the plies of the carbon-carbon material in a manner such that the fibers of said filament tape plies are laid along predetermined directions so as to provide the part to be fabricated with increased strength along a predetermined direction of applied force; (b) curing said laid up laminate under pressures sufficient to provide controlled evolution of volatiles, at increasing temperatures until cured; (c) pyrolyzing said cured laminate at elevated temperatures; and (d) densifying the resulting laminate material.