Systems and methods for manufacturing carbon fiber from coal
AssigneeCarbon Holdings Intellectual Properties, LLC
InventorsCharles Agee Atkins, Christopher L. Yurchick
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Abstract
Embodiments discloses herein relate to methods of processing coal. A method to process coal includes subjecting raw coal to a liquefaction process to form a pitch resin and refining the pitch resin to produce a mesophase pitch. The method further includes subjecting the mesophase pitch to a low crystallinity spinning process to form a raw fiber. The raw fiber is then further subjected to a stabilization process configured to oxygen cross-link the fiber to form a stabilized fiber and then subjecting the stabilized fiber to a carbonization process to form a carbon fiber.
Claims8
A method of producing carbon fiber, the method comprising:
- subjecting raw coal to a liquefaction process to form a pitch or a pitch resin;
- refining the pitch or pitch resin to produce a mesophase pitch with a degree of anisotropy between 20% and 99%;
- blending graphene with a thermoplastic blend additive and the mesophase pitch;
- subjecting the mesophase pitch or pitch resin to a low-crystallinity spinning process to form raw fiber;
- subjecting the raw fiber to a fiber stabilization process using oxygen to produce stabilized carbon fibers;
- and
- subjecting the stabilized carbon fiber to a carbonization process to form a carbonized or calcinated carbon fiber.
Dependencies are inferred from the claim text.