Document Type
Patent
Publication Date
10-13-1992
Patent Number
patent number 5154908
Abstract
Carbon fibers having a multi-lobal transverse cross-section are produced by extruding a carbonaceous anisotropic liquid precursor through a spinneret having a capillary with a multi-lobal cross-section, solidifying the extruded filament, rendering the filament infusible, and heating the filament in an inert environment at a temperature sufficient to substantially increase the tensile strength and modulus of elasticity of the filament.
Application Number
06/775131
Assignees
Clemson University (Clemson, SC)
Filing Date
1985-09-12
Primary/U.S. Class
423/447.1
Other/U.S. Class
264/29.2, 423/447.2, 423/447.4, 423/447.6
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