Methods for making carbon fibers for high temperature applications
The present invention relates to a method for the continuous production of low thermal conductivity endless filament yarns with a compact, homogeneous structural morphology. The presently disclosed methods utilize safe and recyclable ionic liquids to produce carbon fiber precursors from cellulose. The fibers are produced by the carbonization of cellulose carbon fiber precursors. The precursor fiber filaments have an increased tear resistance with simultaneously sufficient elongation, a round or crenulated cross-section, and homogeneous fiber morphology. The filament yarns exhibit performance characteristics similar to those produced from traditional viscose rayon. The resulting fibers are especially suited for aerospace applications in composite materials used at the limits of high temperatures, for instance in structures found in rocket nozzles or atmospheric reentry heat shields on spacecraft.
» Number: US10260171B1 (B1)
» Publication Date: 16/04/2019
» Applicant: KAUKLER WILLIAM FELIX?[US]; THE BOARD OF TRUSTEES OF THE UNIV OF ALABAMA FOR AND ON BEHALF OF THE UNIV OF ALABAMA IN HUNTSVILLE?[US]
» Inventor: KAUKLER WILLIAM FELIX?[US]
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 737882.
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