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METHOD OF MAKING A FIBER PREFORM FOR CERAMIC MATRIX COMPOSITE (CMC) FABRICATION UTILIZING A FUGITIVE BINDER
A method of making a fiber preform for ceramic matrix composite (CMC) fabrication comprises laminating an arrangement of fibers between polymer sheets comprising an organic polymer, which may function as a fugitive binder during fabrication, to form a flexible prepreg sheet. A plurality of the flexible prepreg sheets are laid up in a predetermined geometry to form a stack, and the stack is heated to soften the organic polymer and bond together the flexible prepreg sheets into a bonded prepreg structure. Upon cooling of the bonded prepreg structure, a rigid preform is formed. The rigid preform is heated at a sufficient temperature to pyrolyze the organic polymer. Thus, a porous preform that may undergo further processing into a CMC is formed.
METHOD OF MAKING A FIBER PREFORM FOR CERAMIC MATRIX COMPOSITE (CMC) FABRICATION UTILIZING A FUGITIVE BINDER
A method of making a fiber preform for ceramic matrix composite (CMC) fabrication comprises laminating an arrangement of fibers between polymer sheets comprising an organic polymer, which may function as a fugitive binder during fabrication, to form a flexible prepreg sheet. A plurality of the flexible prepreg sheets are laid up in a predetermined geometry to form a stack, and the stack is heated to soften the organic polymer and bond together the flexible prepreg sheets into a bonded prepreg structure. Upon cooling of the bonded prepreg structure, a rigid preform is formed. The rigid preform is heated at a sufficient temperature to pyrolyze the organic polymer. Thus, a porous preform that may undergo further processing into a CMC is formed.
METHOD OF MAKING A FIBER PREFORM FOR CERAMIC MATRIX COMPOSITE (CMC) FABRICATION UTILIZING A FUGITIVE BINDER
HARRIS STEPHEN (author) / SMOLENSKI DAVID (author)
2019-06-20
Patent
Electronic Resource
English
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