Accession Number : ADD012435
Title : Co-Pyrolysis Process for Forming Carbonized Composite Bodies.
Descriptive Note : Patent Application,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Personal Author(s) : Yeager,Robert E ; Stone,Earl L , III
Report Date : 06 May 1986
Pagination or Media Count : 20
Abstract : A co-pyrolysis process is disclosed for forming carbonized composite bodies in which co-pyrolysis of organic fibrous and matrix components is effected during initial pyrolysis. Improved interfacial bonding of composite bodies is achieved by combining fibrous precursors, or reinforcements with a controlled pre-shrink state, with an appropriate matrix to insure shrinkage matching during processing. Processing involves the heat treatment of an organic fibrous component, impregnation of the heat treated fibrous component with a resinous binder, forming a layup of the resin impregnated fibrous component, subjecting the layup to molding and curing cycles to form a laminate, pyrolysis of the laminate, and post-pyrolysis heat treatment of the pyrolized laminate.
Descriptors : *PATENT APPLICATIONS, *PYROLYSIS, *FIBER REINFORCED COMPOSITES, CARBON FIBERS, PRECURSORS, HEAT TREATMENT, IMPREGNATION, BINDERS, MOLDING TECHNIQUES, CURING, MATRIX MATERIALS, SHRINKAGE, BONDING, INTERFACES, LAMINATES, MATERIAL FORMING
Subject Categories : Refractory Fibers
Laminates and Composite Materials
Distribution Statement : APPROVED FOR PUBLIC RELEASE