Enhancement of Ultimate Tensile Strength of Carbon Fibers.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent concerns a method of enhancing the tensile strength of carbon fibers of laboratory and commercial materials. Carbon fibers are immersed at ambient temperatures in liquid bromine or bromine dissolved in a solvent within a chemical resistant container for a period of time. The bromine is then removed by flushing with an inert gas. The bromine may be recovered and reused by condensing the vapor small traces of bromine may remain within the fiber. It has been found that the bromine treatment enhances the tensile strength of the treated fiber.
- Refractory Fibers